diff --git a/src/Stripe.net/Entities/AccountLinks/AccountLink.cs b/src/Stripe.net/Entities/AccountLinks/AccountLink.cs
index 8bacf57d3e..86581ad248 100644
--- a/src/Stripe.net/Entities/AccountLinks/AccountLink.cs
+++ b/src/Stripe.net/Entities/AccountLinks/AccountLink.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Account Links are the means by which a Connect platform grants a connected account
@@ -18,6 +21,9 @@ public class AccountLink : StripeEntity<AccountLink>, IHasObject
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -25,6 +31,10 @@ public class AccountLink : StripeEntity<AccountLink>, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -32,12 +42,19 @@ public class AccountLink : StripeEntity<AccountLink>, IHasObject
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime ExpiresAt { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// The URL for the account link.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/AccountSessions/AccountSession.cs b/src/Stripe.net/Entities/AccountSessions/AccountSession.cs
index 0aee88d5df..6fdf220ecd 100644
--- a/src/Stripe.net/Entities/AccountSessions/AccountSession.cs
+++ b/src/Stripe.net/Entities/AccountSessions/AccountSession.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// An AccountSession allows a Connect platform to grant access to a connected account in
@@ -23,12 +26,18 @@ public class AccountSession : StripeEntity<AccountSession>, IHasObject
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// The ID of the account the AccountSession was created for.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public string Account { get; set; }
 
         /// <summary>
@@ -45,9 +54,15 @@ public class AccountSession : StripeEntity<AccountSession>, IHasObject
         /// handled.
         /// </summary>
         [JsonProperty("client_secret")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("client_secret")]
+#endif
         public string ClientSecret { get; set; }
 
         [JsonProperty("components")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("components")]
+#endif
         public AccountSessionComponents Components { get; set; }
 
         /// <summary>
@@ -55,6 +70,10 @@ public class AccountSession : StripeEntity<AccountSession>, IHasObject
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime ExpiresAt { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -62,6 +81,9 @@ public class AccountSession : StripeEntity<AccountSession>, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponents.cs b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponents.cs
index 695b61747f..8fac1b4eb2 100644
--- a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponents.cs
+++ b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponents.cs
@@ -2,52 +2,100 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponents : StripeEntity<AccountSessionComponents>
     {
         [JsonProperty("account_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_management")]
+#endif
         public AccountSessionComponentsAccountManagement AccountManagement { get; set; }
 
         [JsonProperty("account_onboarding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_onboarding")]
+#endif
         public AccountSessionComponentsAccountOnboarding AccountOnboarding { get; set; }
 
         [JsonProperty("balances")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("balances")]
+#endif
         public AccountSessionComponentsBalances Balances { get; set; }
 
         [JsonProperty("documents")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("documents")]
+#endif
         public AccountSessionComponentsDocuments Documents { get; set; }
 
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public AccountSessionComponentsFinancialAccount FinancialAccount { get; set; }
 
         [JsonProperty("financial_account_transactions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account_transactions")]
+#endif
         public AccountSessionComponentsFinancialAccountTransactions FinancialAccountTransactions { get; set; }
 
         [JsonProperty("issuing_card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuing_card")]
+#endif
         public AccountSessionComponentsIssuingCard IssuingCard { get; set; }
 
         [JsonProperty("issuing_cards_list")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuing_cards_list")]
+#endif
         public AccountSessionComponentsIssuingCardsList IssuingCardsList { get; set; }
 
         [JsonProperty("notification_banner")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("notification_banner")]
+#endif
         public AccountSessionComponentsNotificationBanner NotificationBanner { get; set; }
 
         [JsonProperty("payment_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_details")]
+#endif
         public AccountSessionComponentsPaymentDetails PaymentDetails { get; set; }
 
         [JsonProperty("payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payments")]
+#endif
         public AccountSessionComponentsPayments Payments { get; set; }
 
         [JsonProperty("payouts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payouts")]
+#endif
         public AccountSessionComponentsPayouts Payouts { get; set; }
 
         [JsonProperty("payouts_list")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payouts_list")]
+#endif
         public AccountSessionComponentsPayoutsList PayoutsList { get; set; }
 
         [JsonProperty("tax_registrations")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_registrations")]
+#endif
         public AccountSessionComponentsTaxRegistrations TaxRegistrations { get; set; }
 
         [JsonProperty("tax_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_settings")]
+#endif
         public AccountSessionComponentsTaxSettings TaxSettings { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsAccountManagement.cs b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsAccountManagement.cs
index 6ff6b25dfa..83f1a231a5 100644
--- a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsAccountManagement.cs
+++ b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsAccountManagement.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsAccountManagement : StripeEntity<AccountSessionComponentsAccountManagement>
     {
@@ -9,9 +12,15 @@ public class AccountSessionComponentsAccountManagement : StripeEntity<AccountSes
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsAccountManagementFeatures Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsAccountManagementFeatures.cs b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsAccountManagementFeatures.cs
index e923118ac4..19cbdc80a4 100644
--- a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsAccountManagementFeatures.cs
+++ b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsAccountManagementFeatures.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsAccountManagementFeatures : StripeEntity<AccountSessionComponentsAccountManagementFeatures>
     {
@@ -13,6 +16,9 @@ public class AccountSessionComponentsAccountManagementFeatures : StripeEntity<Ac
         /// <c>disable_stripe_user_authentication</c> defaults to false.
         /// </summary>
         [JsonProperty("disable_stripe_user_authentication")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("disable_stripe_user_authentication")]
+#endif
         public bool DisableStripeUserAuthentication { get; set; }
 
         /// <summary>
@@ -23,6 +29,9 @@ public class AccountSessionComponentsAccountManagementFeatures : StripeEntity<Ac
         /// The default value for this feature is <c>true</c>.
         /// </summary>
         [JsonProperty("external_account_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("external_account_collection")]
+#endif
         public bool ExternalAccountCollection { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsAccountOnboarding.cs b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsAccountOnboarding.cs
index e39c061b65..b71a604731 100644
--- a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsAccountOnboarding.cs
+++ b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsAccountOnboarding.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsAccountOnboarding : StripeEntity<AccountSessionComponentsAccountOnboarding>
     {
@@ -9,9 +12,15 @@ public class AccountSessionComponentsAccountOnboarding : StripeEntity<AccountSes
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsAccountOnboardingFeatures Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsAccountOnboardingFeatures.cs b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsAccountOnboardingFeatures.cs
index 30568b1165..815d29e638 100644
--- a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsAccountOnboardingFeatures.cs
+++ b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsAccountOnboardingFeatures.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsAccountOnboardingFeatures : StripeEntity<AccountSessionComponentsAccountOnboardingFeatures>
     {
@@ -13,6 +16,9 @@ public class AccountSessionComponentsAccountOnboardingFeatures : StripeEntity<Ac
         /// <c>disable_stripe_user_authentication</c> defaults to false.
         /// </summary>
         [JsonProperty("disable_stripe_user_authentication")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("disable_stripe_user_authentication")]
+#endif
         public bool DisableStripeUserAuthentication { get; set; }
 
         /// <summary>
@@ -23,6 +29,9 @@ public class AccountSessionComponentsAccountOnboardingFeatures : StripeEntity<Ac
         /// The default value for this feature is <c>true</c>.
         /// </summary>
         [JsonProperty("external_account_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("external_account_collection")]
+#endif
         public bool ExternalAccountCollection { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsBalances.cs b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsBalances.cs
index f2a462fb2f..63aa8b6bb6 100644
--- a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsBalances.cs
+++ b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsBalances.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsBalances : StripeEntity<AccountSessionComponentsBalances>
     {
@@ -9,9 +12,15 @@ public class AccountSessionComponentsBalances : StripeEntity<AccountSessionCompo
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsBalancesFeatures Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsBalancesFeatures.cs b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsBalancesFeatures.cs
index 7c2c0a93d5..82ccce0d3f 100644
--- a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsBalancesFeatures.cs
+++ b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsBalancesFeatures.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsBalancesFeatures : StripeEntity<AccountSessionComponentsBalancesFeatures>
     {
@@ -13,6 +16,9 @@ public class AccountSessionComponentsBalancesFeatures : StripeEntity<AccountSess
         /// <c>disable_stripe_user_authentication</c> defaults to false.
         /// </summary>
         [JsonProperty("disable_stripe_user_authentication")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("disable_stripe_user_authentication")]
+#endif
         public bool DisableStripeUserAuthentication { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class AccountSessionComponentsBalancesFeatures : StripeEntity<AccountSess
         /// Loss Liability, default <c>false</c> otherwise.
         /// </summary>
         [JsonProperty("edit_payout_schedule")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("edit_payout_schedule")]
+#endif
         public bool EditPayoutSchedule { get; set; }
 
         /// <summary>
@@ -30,6 +39,9 @@ public class AccountSessionComponentsBalancesFeatures : StripeEntity<AccountSess
         /// The default value for this feature is <c>true</c>.
         /// </summary>
         [JsonProperty("external_account_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("external_account_collection")]
+#endif
         public bool ExternalAccountCollection { get; set; }
 
         /// <summary>
@@ -37,6 +49,9 @@ public class AccountSessionComponentsBalancesFeatures : StripeEntity<AccountSess
         /// Liability, default <c>false</c> otherwise.
         /// </summary>
         [JsonProperty("instant_payouts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("instant_payouts")]
+#endif
         public bool InstantPayouts { get; set; }
 
         /// <summary>
@@ -44,6 +59,9 @@ public class AccountSessionComponentsBalancesFeatures : StripeEntity<AccountSess
         /// Liability, default <c>false</c> otherwise.
         /// </summary>
         [JsonProperty("standard_payouts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard_payouts")]
+#endif
         public bool StandardPayouts { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsDocuments.cs b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsDocuments.cs
index b74a4292b3..7551ecf4bb 100644
--- a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsDocuments.cs
+++ b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsDocuments.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsDocuments : StripeEntity<AccountSessionComponentsDocuments>
     {
@@ -9,9 +12,15 @@ public class AccountSessionComponentsDocuments : StripeEntity<AccountSessionComp
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsDocumentsFeatures Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsFinancialAccount.cs b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsFinancialAccount.cs
index b7b18c5d40..25ec7924fe 100644
--- a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsFinancialAccount.cs
+++ b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsFinancialAccount.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsFinancialAccount : StripeEntity<AccountSessionComponentsFinancialAccount>
     {
@@ -9,9 +12,15 @@ public class AccountSessionComponentsFinancialAccount : StripeEntity<AccountSess
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsFinancialAccountFeatures Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsFinancialAccountFeatures.cs b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsFinancialAccountFeatures.cs
index a9bba4246b..c87f6b64fa 100644
--- a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsFinancialAccountFeatures.cs
+++ b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsFinancialAccountFeatures.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsFinancialAccountFeatures : StripeEntity<AccountSessionComponentsFinancialAccountFeatures>
     {
@@ -13,24 +16,36 @@ public class AccountSessionComponentsFinancialAccountFeatures : StripeEntity<Acc
         /// <c>disable_stripe_user_authentication</c> defaults to false.
         /// </summary>
         [JsonProperty("disable_stripe_user_authentication")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("disable_stripe_user_authentication")]
+#endif
         public bool DisableStripeUserAuthentication { get; set; }
 
         /// <summary>
         /// Whether to allow external accounts to be linked for money transfer.
         /// </summary>
         [JsonProperty("external_account_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("external_account_collection")]
+#endif
         public bool ExternalAccountCollection { get; set; }
 
         /// <summary>
         /// Whether to allow sending money.
         /// </summary>
         [JsonProperty("send_money")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("send_money")]
+#endif
         public bool SendMoney { get; set; }
 
         /// <summary>
         /// Whether to allow transferring balance.
         /// </summary>
         [JsonProperty("transfer_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_balance")]
+#endif
         public bool TransferBalance { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsFinancialAccountTransactions.cs b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsFinancialAccountTransactions.cs
index ad93c3e8d9..f042ed75c3 100644
--- a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsFinancialAccountTransactions.cs
+++ b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsFinancialAccountTransactions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsFinancialAccountTransactions : StripeEntity<AccountSessionComponentsFinancialAccountTransactions>
     {
@@ -9,9 +12,15 @@ public class AccountSessionComponentsFinancialAccountTransactions : StripeEntity
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsFinancialAccountTransactionsFeatures Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsFinancialAccountTransactionsFeatures.cs b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsFinancialAccountTransactionsFeatures.cs
index 9c72a34600..21367eb0a8 100644
--- a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsFinancialAccountTransactionsFeatures.cs
+++ b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsFinancialAccountTransactionsFeatures.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsFinancialAccountTransactionsFeatures : StripeEntity<AccountSessionComponentsFinancialAccountTransactionsFeatures>
     {
@@ -9,6 +12,9 @@ public class AccountSessionComponentsFinancialAccountTransactionsFeatures : Stri
         /// Whether to allow card spend dispute management features.
         /// </summary>
         [JsonProperty("card_spend_dispute_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_spend_dispute_management")]
+#endif
         public bool CardSpendDisputeManagement { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsIssuingCard.cs b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsIssuingCard.cs
index 62d84462c1..7ca02510f1 100644
--- a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsIssuingCard.cs
+++ b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsIssuingCard.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsIssuingCard : StripeEntity<AccountSessionComponentsIssuingCard>
     {
@@ -9,9 +12,15 @@ public class AccountSessionComponentsIssuingCard : StripeEntity<AccountSessionCo
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsIssuingCardFeatures Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsIssuingCardFeatures.cs b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsIssuingCardFeatures.cs
index a7279a66d2..5a98444936 100644
--- a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsIssuingCardFeatures.cs
+++ b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsIssuingCardFeatures.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsIssuingCardFeatures : StripeEntity<AccountSessionComponentsIssuingCardFeatures>
     {
@@ -9,24 +12,36 @@ public class AccountSessionComponentsIssuingCardFeatures : StripeEntity<AccountS
         /// Whether to allow card management features.
         /// </summary>
         [JsonProperty("card_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_management")]
+#endif
         public bool CardManagement { get; set; }
 
         /// <summary>
         /// Whether to allow card spend dispute management features.
         /// </summary>
         [JsonProperty("card_spend_dispute_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_spend_dispute_management")]
+#endif
         public bool CardSpendDisputeManagement { get; set; }
 
         /// <summary>
         /// Whether to allow cardholder management features.
         /// </summary>
         [JsonProperty("cardholder_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder_management")]
+#endif
         public bool CardholderManagement { get; set; }
 
         /// <summary>
         /// Whether to allow spend control management features.
         /// </summary>
         [JsonProperty("spend_control_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("spend_control_management")]
+#endif
         public bool SpendControlManagement { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsIssuingCardsList.cs b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsIssuingCardsList.cs
index 58f83e8e69..6eed2b5b93 100644
--- a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsIssuingCardsList.cs
+++ b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsIssuingCardsList.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsIssuingCardsList : StripeEntity<AccountSessionComponentsIssuingCardsList>
     {
@@ -9,9 +12,15 @@ public class AccountSessionComponentsIssuingCardsList : StripeEntity<AccountSess
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsIssuingCardsListFeatures Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsIssuingCardsListFeatures.cs b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsIssuingCardsListFeatures.cs
index 20110daeb9..450117a727 100644
--- a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsIssuingCardsListFeatures.cs
+++ b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsIssuingCardsListFeatures.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsIssuingCardsListFeatures : StripeEntity<AccountSessionComponentsIssuingCardsListFeatures>
     {
@@ -9,18 +12,27 @@ public class AccountSessionComponentsIssuingCardsListFeatures : StripeEntity<Acc
         /// Whether to allow card management features.
         /// </summary>
         [JsonProperty("card_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_management")]
+#endif
         public bool CardManagement { get; set; }
 
         /// <summary>
         /// Whether to allow card spend dispute management features.
         /// </summary>
         [JsonProperty("card_spend_dispute_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_spend_dispute_management")]
+#endif
         public bool CardSpendDisputeManagement { get; set; }
 
         /// <summary>
         /// Whether to allow cardholder management features.
         /// </summary>
         [JsonProperty("cardholder_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder_management")]
+#endif
         public bool CardholderManagement { get; set; }
 
         /// <summary>
@@ -29,12 +41,18 @@ public class AccountSessionComponentsIssuingCardsListFeatures : StripeEntity<Acc
         /// requirements are due or change, like custom accounts.
         /// </summary>
         [JsonProperty("disable_stripe_user_authentication")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("disable_stripe_user_authentication")]
+#endif
         public bool DisableStripeUserAuthentication { get; set; }
 
         /// <summary>
         /// Whether to allow spend control management features.
         /// </summary>
         [JsonProperty("spend_control_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("spend_control_management")]
+#endif
         public bool SpendControlManagement { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsNotificationBanner.cs b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsNotificationBanner.cs
index 8fb832ea2f..0962420f72 100644
--- a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsNotificationBanner.cs
+++ b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsNotificationBanner.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsNotificationBanner : StripeEntity<AccountSessionComponentsNotificationBanner>
     {
@@ -9,9 +12,15 @@ public class AccountSessionComponentsNotificationBanner : StripeEntity<AccountSe
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsNotificationBannerFeatures Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsNotificationBannerFeatures.cs b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsNotificationBannerFeatures.cs
index 0a6d022478..28312b1232 100644
--- a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsNotificationBannerFeatures.cs
+++ b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsNotificationBannerFeatures.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsNotificationBannerFeatures : StripeEntity<AccountSessionComponentsNotificationBannerFeatures>
     {
@@ -13,6 +16,9 @@ public class AccountSessionComponentsNotificationBannerFeatures : StripeEntity<A
         /// <c>disable_stripe_user_authentication</c> defaults to false.
         /// </summary>
         [JsonProperty("disable_stripe_user_authentication")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("disable_stripe_user_authentication")]
+#endif
         public bool DisableStripeUserAuthentication { get; set; }
 
         /// <summary>
@@ -23,6 +29,9 @@ public class AccountSessionComponentsNotificationBannerFeatures : StripeEntity<A
         /// The default value for this feature is <c>true</c>.
         /// </summary>
         [JsonProperty("external_account_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("external_account_collection")]
+#endif
         public bool ExternalAccountCollection { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsPaymentDetails.cs b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsPaymentDetails.cs
index 277f17ecab..5219eb6f2a 100644
--- a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsPaymentDetails.cs
+++ b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsPaymentDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsPaymentDetails : StripeEntity<AccountSessionComponentsPaymentDetails>
     {
@@ -9,9 +12,15 @@ public class AccountSessionComponentsPaymentDetails : StripeEntity<AccountSessio
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsPaymentDetailsFeatures Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsPaymentDetailsFeatures.cs b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsPaymentDetailsFeatures.cs
index 02e441b2ce..448cead3b6 100644
--- a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsPaymentDetailsFeatures.cs
+++ b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsPaymentDetailsFeatures.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsPaymentDetailsFeatures : StripeEntity<AccountSessionComponentsPaymentDetailsFeatures>
     {
@@ -10,6 +13,9 @@ public class AccountSessionComponentsPaymentDetailsFeatures : StripeEntity<Accou
         /// default.
         /// </summary>
         [JsonProperty("capture_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_payments")]
+#endif
         public bool CapturePayments { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class AccountSessionComponentsPaymentDetailsFeatures : StripeEntity<Accou
         /// behalf of them. This is <c>false</c> by default.
         /// </summary>
         [JsonProperty("destination_on_behalf_of_charge_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination_on_behalf_of_charge_management")]
+#endif
         public bool DestinationOnBehalfOfChargeManagement { get; set; }
 
         /// <summary>
@@ -24,12 +33,18 @@ public class AccountSessionComponentsPaymentDetailsFeatures : StripeEntity<Accou
         /// disputes. This is <c>true</c> by default.
         /// </summary>
         [JsonProperty("dispute_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dispute_management")]
+#endif
         public bool DisputeManagement { get; set; }
 
         /// <summary>
         /// Whether to allow sending refunds. This is <c>true</c> by default.
         /// </summary>
         [JsonProperty("refund_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_management")]
+#endif
         public bool RefundManagement { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsPayments.cs b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsPayments.cs
index ba20cb3783..a0a831a97e 100644
--- a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsPayments.cs
+++ b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsPayments.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsPayments : StripeEntity<AccountSessionComponentsPayments>
     {
@@ -9,9 +12,15 @@ public class AccountSessionComponentsPayments : StripeEntity<AccountSessionCompo
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsPaymentsFeatures Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsPaymentsFeatures.cs b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsPaymentsFeatures.cs
index 822ec1ca73..a8844c71af 100644
--- a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsPaymentsFeatures.cs
+++ b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsPaymentsFeatures.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsPaymentsFeatures : StripeEntity<AccountSessionComponentsPaymentsFeatures>
     {
@@ -10,6 +13,9 @@ public class AccountSessionComponentsPaymentsFeatures : StripeEntity<AccountSess
         /// default.
         /// </summary>
         [JsonProperty("capture_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_payments")]
+#endif
         public bool CapturePayments { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class AccountSessionComponentsPaymentsFeatures : StripeEntity<AccountSess
         /// behalf of them. This is <c>false</c> by default.
         /// </summary>
         [JsonProperty("destination_on_behalf_of_charge_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination_on_behalf_of_charge_management")]
+#endif
         public bool DestinationOnBehalfOfChargeManagement { get; set; }
 
         /// <summary>
@@ -24,12 +33,18 @@ public class AccountSessionComponentsPaymentsFeatures : StripeEntity<AccountSess
         /// disputes. This is <c>true</c> by default.
         /// </summary>
         [JsonProperty("dispute_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dispute_management")]
+#endif
         public bool DisputeManagement { get; set; }
 
         /// <summary>
         /// Whether to allow sending refunds. This is <c>true</c> by default.
         /// </summary>
         [JsonProperty("refund_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_management")]
+#endif
         public bool RefundManagement { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsPayouts.cs b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsPayouts.cs
index fc6e67a68e..1a11e88321 100644
--- a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsPayouts.cs
+++ b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsPayouts.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsPayouts : StripeEntity<AccountSessionComponentsPayouts>
     {
@@ -9,9 +12,15 @@ public class AccountSessionComponentsPayouts : StripeEntity<AccountSessionCompon
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsPayoutsFeatures Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsPayoutsFeatures.cs b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsPayoutsFeatures.cs
index c03ac4ad83..9629dc3b82 100644
--- a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsPayoutsFeatures.cs
+++ b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsPayoutsFeatures.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsPayoutsFeatures : StripeEntity<AccountSessionComponentsPayoutsFeatures>
     {
@@ -13,6 +16,9 @@ public class AccountSessionComponentsPayoutsFeatures : StripeEntity<AccountSessi
         /// <c>disable_stripe_user_authentication</c> defaults to false.
         /// </summary>
         [JsonProperty("disable_stripe_user_authentication")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("disable_stripe_user_authentication")]
+#endif
         public bool DisableStripeUserAuthentication { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class AccountSessionComponentsPayoutsFeatures : StripeEntity<AccountSessi
         /// Loss Liability, default <c>false</c> otherwise.
         /// </summary>
         [JsonProperty("edit_payout_schedule")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("edit_payout_schedule")]
+#endif
         public bool EditPayoutSchedule { get; set; }
 
         /// <summary>
@@ -30,6 +39,9 @@ public class AccountSessionComponentsPayoutsFeatures : StripeEntity<AccountSessi
         /// The default value for this feature is <c>true</c>.
         /// </summary>
         [JsonProperty("external_account_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("external_account_collection")]
+#endif
         public bool ExternalAccountCollection { get; set; }
 
         /// <summary>
@@ -37,6 +49,9 @@ public class AccountSessionComponentsPayoutsFeatures : StripeEntity<AccountSessi
         /// Liability, default <c>false</c> otherwise.
         /// </summary>
         [JsonProperty("instant_payouts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("instant_payouts")]
+#endif
         public bool InstantPayouts { get; set; }
 
         /// <summary>
@@ -44,6 +59,9 @@ public class AccountSessionComponentsPayoutsFeatures : StripeEntity<AccountSessi
         /// Liability, default <c>false</c> otherwise.
         /// </summary>
         [JsonProperty("standard_payouts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard_payouts")]
+#endif
         public bool StandardPayouts { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsPayoutsList.cs b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsPayoutsList.cs
index b8ea1bff94..0155d120ca 100644
--- a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsPayoutsList.cs
+++ b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsPayoutsList.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsPayoutsList : StripeEntity<AccountSessionComponentsPayoutsList>
     {
@@ -9,9 +12,15 @@ public class AccountSessionComponentsPayoutsList : StripeEntity<AccountSessionCo
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsPayoutsListFeatures Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsTaxRegistrations.cs b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsTaxRegistrations.cs
index 8a389a9202..9707d853d4 100644
--- a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsTaxRegistrations.cs
+++ b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsTaxRegistrations.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsTaxRegistrations : StripeEntity<AccountSessionComponentsTaxRegistrations>
     {
@@ -9,9 +12,15 @@ public class AccountSessionComponentsTaxRegistrations : StripeEntity<AccountSess
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsTaxRegistrationsFeatures Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsTaxSettings.cs b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsTaxSettings.cs
index 8721703aea..7a9e5092d0 100644
--- a/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsTaxSettings.cs
+++ b/src/Stripe.net/Entities/AccountSessions/AccountSessionComponentsTaxSettings.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsTaxSettings : StripeEntity<AccountSessionComponentsTaxSettings>
     {
@@ -9,9 +12,15 @@ public class AccountSessionComponentsTaxSettings : StripeEntity<AccountSessionCo
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsTaxSettingsFeatures Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/Account.cs b/src/Stripe.net/Entities/Accounts/Account.cs
index 231f358114..7bc283e15e 100644
--- a/src/Stripe.net/Entities/Accounts/Account.cs
+++ b/src/Stripe.net/Entities/Accounts/Account.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// This is an object representing a Stripe account. You can retrieve it to see properties
@@ -30,18 +33,27 @@ public class Account : StripeEntity<Account>, IHasId, IHasMetadata, IHasObject,
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Business information about the account.
         /// </summary>
         [JsonProperty("business_profile")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("business_profile")]
+#endif
         public AccountBusinessProfile BusinessProfile { get; set; }
 
         /// <summary>
@@ -55,27 +67,45 @@ public class Account : StripeEntity<Account>, IHasId, IHasMetadata, IHasObject,
         /// <c>non_profit</c>.
         /// </summary>
         [JsonProperty("business_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("business_type")]
+#endif
         public string BusinessType { get; set; }
 
         [JsonProperty("capabilities")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capabilities")]
+#endif
         public AccountCapabilities Capabilities { get; set; }
 
         /// <summary>
         /// Whether the account can process charges.
         /// </summary>
         [JsonProperty("charges_enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("charges_enabled")]
+#endif
         public bool ChargesEnabled { get; set; }
 
         [JsonProperty("company")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("company")]
+#endif
         public AccountCompany Company { get; set; }
 
         [JsonProperty("controller")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("controller")]
+#endif
         public AccountController Controller { get; set; }
 
         /// <summary>
         /// The account's country.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -83,6 +113,10 @@ public class Account : StripeEntity<Account>, IHasId, IHasMetadata, IHasObject,
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -91,12 +125,19 @@ public class Account : StripeEntity<Account>, IHasId, IHasMetadata, IHasObject,
         /// account's country</a>.
         /// </summary>
         [JsonProperty("default_currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_currency")]
+#endif
         public string DefaultCurrency { get; set; }
 
         /// <summary>
         /// Whether this object is deleted or not.
         /// </summary>
         [JsonProperty("deleted", NullValueHandling = NullValueHandling.Ignore)]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+        [STJS.JsonIgnore(Condition = STJS.JsonIgnoreCondition.WhenWritingNull)]
+#endif
         public bool? Deleted { get; set; }
 
         /// <summary>
@@ -107,6 +148,9 @@ public class Account : StripeEntity<Account>, IHasId, IHasMetadata, IHasObject,
         /// account details.
         /// </summary>
         [JsonProperty("details_submitted")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("details_submitted")]
+#endif
         public bool DetailsSubmitted { get; set; }
 
         /// <summary>
@@ -114,6 +158,9 @@ public class Account : StripeEntity<Account>, IHasId, IHasMetadata, IHasObject,
         /// Stripe doesn't market to this field without explicit approval from the platform.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
@@ -122,15 +169,24 @@ public class Account : StripeEntity<Account>, IHasId, IHasMetadata, IHasObject,
         /// is true.
         /// </summary>
         [JsonProperty("external_accounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("external_accounts")]
+#endif
         public StripeList<IExternalAccount> ExternalAccounts { get; set; }
 
         [JsonProperty("future_requirements")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("future_requirements")]
+#endif
         public AccountFutureRequirements FutureRequirements { get; set; }
 
         /// <summary>
         /// The groups associated with the account.
         /// </summary>
         [JsonProperty("groups")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("groups")]
+#endif
         public AccountGroups Groups { get; set; }
 
         /// <summary>
@@ -149,6 +205,9 @@ public class Account : StripeEntity<Account>, IHasId, IHasMetadata, IHasObject,
         /// identity verification with the API</a>.
         /// </summary>
         [JsonProperty("individual")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("individual")]
+#endif
         public Person Individual { get; set; }
 
         /// <summary>
@@ -157,24 +216,39 @@ public class Account : StripeEntity<Account>, IHasId, IHasMetadata, IHasObject,
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Whether the funds in this account can be paid out.
         /// </summary>
         [JsonProperty("payouts_enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payouts_enabled")]
+#endif
         public bool PayoutsEnabled { get; set; }
 
         [JsonProperty("requirements")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requirements")]
+#endif
         public AccountRequirements Requirements { get; set; }
 
         /// <summary>
         /// Options for customizing how the account functions within Stripe.
         /// </summary>
         [JsonProperty("settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("settings")]
+#endif
         public AccountSettings Settings { get; set; }
 
         [JsonProperty("tos_acceptance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tos_acceptance")]
+#endif
         public AccountTosAcceptance TosAcceptance { get; set; }
 
         /// <summary>
@@ -183,6 +257,9 @@ public class Account : StripeEntity<Account>, IHasId, IHasMetadata, IHasObject,
         /// One of: <c>custom</c>, <c>express</c>, <c>none</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountBusinessProfile.cs b/src/Stripe.net/Entities/Accounts/AccountBusinessProfile.cs
index 327b22aca6..0fbbd3d6eb 100644
--- a/src/Stripe.net/Entities/Accounts/AccountBusinessProfile.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountBusinessProfile.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountBusinessProfile : StripeEntity<AccountBusinessProfile>
     {
@@ -9,6 +12,9 @@ public class AccountBusinessProfile : StripeEntity<AccountBusinessProfile>
         /// The applicant's gross annual revenue for its preceding fiscal year.
         /// </summary>
         [JsonProperty("annual_revenue")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("annual_revenue")]
+#endif
         public AccountBusinessProfileAnnualRevenue AnnualRevenue { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class AccountBusinessProfile : StripeEntity<AccountBusinessProfile>
         /// the business.
         /// </summary>
         [JsonProperty("estimated_worker_count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("estimated_worker_count")]
+#endif
         public long? EstimatedWorkerCount { get; set; }
 
         /// <summary>
@@ -24,15 +33,24 @@ public class AccountBusinessProfile : StripeEntity<AccountBusinessProfile>
         /// provide.
         /// </summary>
         [JsonProperty("mcc")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mcc")]
+#endif
         public string Mcc { get; set; }
 
         [JsonProperty("monthly_estimated_revenue")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("monthly_estimated_revenue")]
+#endif
         public AccountBusinessProfileMonthlyEstimatedRevenue MonthlyEstimatedRevenue { get; set; }
 
         /// <summary>
         /// The customer-facing business name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -40,36 +58,54 @@ public class AccountBusinessProfile : StripeEntity<AccountBusinessProfile>
         /// used by Stripe for risk and underwriting purposes.
         /// </summary>
         [JsonProperty("product_description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_description")]
+#endif
         public string ProductDescription { get; set; }
 
         /// <summary>
         /// A publicly available mailing address for sending support issues to.
         /// </summary>
         [JsonProperty("support_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("support_address")]
+#endif
         public Address SupportAddress { get; set; }
 
         /// <summary>
         /// A publicly available email address for sending support issues to.
         /// </summary>
         [JsonProperty("support_email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("support_email")]
+#endif
         public string SupportEmail { get; set; }
 
         /// <summary>
         /// A publicly available phone number to call with support issues.
         /// </summary>
         [JsonProperty("support_phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("support_phone")]
+#endif
         public string SupportPhone { get; set; }
 
         /// <summary>
         /// A publicly available website for handling support issues.
         /// </summary>
         [JsonProperty("support_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("support_url")]
+#endif
         public string SupportUrl { get; set; }
 
         /// <summary>
         /// The business's publicly available website.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountBusinessProfileAnnualRevenue.cs b/src/Stripe.net/Entities/Accounts/AccountBusinessProfileAnnualRevenue.cs
index 2662eae9ea..d3929e576b 100644
--- a/src/Stripe.net/Entities/Accounts/AccountBusinessProfileAnnualRevenue.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountBusinessProfileAnnualRevenue.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountBusinessProfileAnnualRevenue : StripeEntity<AccountBusinessProfileAnnualRevenue>
     {
@@ -10,6 +13,9 @@ public class AccountBusinessProfileAnnualRevenue : StripeEntity<AccountBusinessP
         /// href="https://stripe.com/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class AccountBusinessProfileAnnualRevenue : StripeEntity<AccountBusinessP
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class AccountBusinessProfileAnnualRevenue : StripeEntity<AccountBusinessP
         /// the 31st of December, 2023.
         /// </summary>
         [JsonProperty("fiscal_year_end")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fiscal_year_end")]
+#endif
         public string FiscalYearEnd { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountBusinessProfileMonthlyEstimatedRevenue.cs b/src/Stripe.net/Entities/Accounts/AccountBusinessProfileMonthlyEstimatedRevenue.cs
index 4b69bd93f0..a8f7cb09bb 100644
--- a/src/Stripe.net/Entities/Accounts/AccountBusinessProfileMonthlyEstimatedRevenue.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountBusinessProfileMonthlyEstimatedRevenue.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountBusinessProfileMonthlyEstimatedRevenue : StripeEntity<AccountBusinessProfileMonthlyEstimatedRevenue>
     {
@@ -10,6 +13,9 @@ public class AccountBusinessProfileMonthlyEstimatedRevenue : StripeEntity<Accoun
         /// href="https://stripe.com/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class AccountBusinessProfileMonthlyEstimatedRevenue : StripeEntity<Accoun
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountCapabilities.cs b/src/Stripe.net/Entities/Accounts/AccountCapabilities.cs
index 879d11356c..e03fb53fc4 100644
--- a/src/Stripe.net/Entities/Accounts/AccountCapabilities.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountCapabilities.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilities : StripeEntity<AccountCapabilities>
     {
@@ -11,6 +14,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("acss_debit_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acss_debit_payments")]
+#endif
         public string AcssDebitPayments { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("affirm_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("affirm_payments")]
+#endif
         public string AffirmPayments { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("afterpay_clearpay_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("afterpay_clearpay_payments")]
+#endif
         public string AfterpayClearpayPayments { get; set; }
 
         /// <summary>
@@ -35,6 +47,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("alma_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alma_payments")]
+#endif
         public string AlmaPayments { get; set; }
 
         /// <summary>
@@ -43,6 +58,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("amazon_pay_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amazon_pay_payments")]
+#endif
         public string AmazonPayPayments { get; set; }
 
         /// <summary>
@@ -51,6 +69,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("au_becs_debit_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("au_becs_debit_payments")]
+#endif
         public string AuBecsDebitPayments { get; set; }
 
         /// <summary>
@@ -59,6 +80,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("bacs_debit_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bacs_debit_payments")]
+#endif
         public string BacsDebitPayments { get; set; }
 
         /// <summary>
@@ -67,6 +91,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("bancontact_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bancontact_payments")]
+#endif
         public string BancontactPayments { get; set; }
 
         /// <summary>
@@ -75,6 +102,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("bank_transfer_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_transfer_payments")]
+#endif
         public string BankTransferPayments { get; set; }
 
         /// <summary>
@@ -83,6 +113,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("blik_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("blik_payments")]
+#endif
         public string BlikPayments { get; set; }
 
         /// <summary>
@@ -91,6 +124,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("boleto_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("boleto_payments")]
+#endif
         public string BoletoPayments { get; set; }
 
         /// <summary>
@@ -99,6 +135,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("card_issuing")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_issuing")]
+#endif
         public string CardIssuing { get; set; }
 
         /// <summary>
@@ -107,6 +146,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("card_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_payments")]
+#endif
         public string CardPayments { get; set; }
 
         /// <summary>
@@ -115,6 +157,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("cartes_bancaires_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cartes_bancaires_payments")]
+#endif
         public string CartesBancairesPayments { get; set; }
 
         /// <summary>
@@ -123,6 +168,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("cashapp_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cashapp_payments")]
+#endif
         public string CashappPayments { get; set; }
 
         /// <summary>
@@ -131,6 +179,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("eps_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eps_payments")]
+#endif
         public string EpsPayments { get; set; }
 
         /// <summary>
@@ -139,6 +190,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("fpx_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fpx_payments")]
+#endif
         public string FpxPayments { get; set; }
 
         /// <summary>
@@ -147,6 +201,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("gb_bank_transfer_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gb_bank_transfer_payments")]
+#endif
         public string GbBankTransferPayments { get; set; }
 
         /// <summary>
@@ -155,6 +212,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("giropay_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("giropay_payments")]
+#endif
         public string GiropayPayments { get; set; }
 
         /// <summary>
@@ -163,6 +223,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("grabpay_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("grabpay_payments")]
+#endif
         public string GrabpayPayments { get; set; }
 
         /// <summary>
@@ -171,6 +234,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("ideal_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ideal_payments")]
+#endif
         public string IdealPayments { get; set; }
 
         /// <summary>
@@ -179,6 +245,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("india_international_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("india_international_payments")]
+#endif
         public string IndiaInternationalPayments { get; set; }
 
         /// <summary>
@@ -187,6 +256,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("jcb_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("jcb_payments")]
+#endif
         public string JcbPayments { get; set; }
 
         /// <summary>
@@ -195,6 +267,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("jp_bank_transfer_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("jp_bank_transfer_payments")]
+#endif
         public string JpBankTransferPayments { get; set; }
 
         /// <summary>
@@ -203,6 +278,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("kakao_pay_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kakao_pay_payments")]
+#endif
         public string KakaoPayPayments { get; set; }
 
         /// <summary>
@@ -211,6 +289,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("klarna_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("klarna_payments")]
+#endif
         public string KlarnaPayments { get; set; }
 
         /// <summary>
@@ -219,6 +300,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("konbini_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("konbini_payments")]
+#endif
         public string KonbiniPayments { get; set; }
 
         /// <summary>
@@ -227,6 +311,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("kr_card_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kr_card_payments")]
+#endif
         public string KrCardPayments { get; set; }
 
         /// <summary>
@@ -234,6 +321,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("legacy_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("legacy_payments")]
+#endif
         public string LegacyPayments { get; set; }
 
         /// <summary>
@@ -242,6 +332,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("link_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("link_payments")]
+#endif
         public string LinkPayments { get; set; }
 
         /// <summary>
@@ -250,6 +343,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("mobilepay_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mobilepay_payments")]
+#endif
         public string MobilepayPayments { get; set; }
 
         /// <summary>
@@ -258,6 +354,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("multibanco_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("multibanco_payments")]
+#endif
         public string MultibancoPayments { get; set; }
 
         /// <summary>
@@ -266,6 +365,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("mx_bank_transfer_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mx_bank_transfer_payments")]
+#endif
         public string MxBankTransferPayments { get; set; }
 
         /// <summary>
@@ -274,6 +376,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("naver_pay_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("naver_pay_payments")]
+#endif
         public string NaverPayPayments { get; set; }
 
         /// <summary>
@@ -282,6 +387,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("oxxo_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("oxxo_payments")]
+#endif
         public string OxxoPayments { get; set; }
 
         /// <summary>
@@ -290,6 +398,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("p24_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("p24_payments")]
+#endif
         public string P24Payments { get; set; }
 
         /// <summary>
@@ -298,6 +409,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("pay_by_bank_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_by_bank_payments")]
+#endif
         public string PayByBankPayments { get; set; }
 
         /// <summary>
@@ -306,6 +420,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("payco_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payco_payments")]
+#endif
         public string PaycoPayments { get; set; }
 
         /// <summary>
@@ -314,6 +431,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("paynow_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paynow_payments")]
+#endif
         public string PaynowPayments { get; set; }
 
         /// <summary>
@@ -322,6 +442,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("promptpay_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promptpay_payments")]
+#endif
         public string PromptpayPayments { get; set; }
 
         /// <summary>
@@ -330,6 +453,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("revolut_pay_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("revolut_pay_payments")]
+#endif
         public string RevolutPayPayments { get; set; }
 
         /// <summary>
@@ -338,6 +464,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("samsung_pay_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("samsung_pay_payments")]
+#endif
         public string SamsungPayPayments { get; set; }
 
         /// <summary>
@@ -346,6 +475,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("sepa_bank_transfer_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_bank_transfer_payments")]
+#endif
         public string SepaBankTransferPayments { get; set; }
 
         /// <summary>
@@ -354,6 +486,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("sepa_debit_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_debit_payments")]
+#endif
         public string SepaDebitPayments { get; set; }
 
         /// <summary>
@@ -362,6 +497,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("sofort_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sofort_payments")]
+#endif
         public string SofortPayments { get; set; }
 
         /// <summary>
@@ -370,6 +508,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("swish_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("swish_payments")]
+#endif
         public string SwishPayments { get; set; }
 
         /// <summary>
@@ -377,6 +518,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("tax_reporting_us_1099_k")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_reporting_us_1099_k")]
+#endif
         public string TaxReportingUs1099K { get; set; }
 
         /// <summary>
@@ -384,6 +528,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("tax_reporting_us_1099_misc")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_reporting_us_1099_misc")]
+#endif
         public string TaxReportingUs1099Misc { get; set; }
 
         /// <summary>
@@ -392,6 +539,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("transfers")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfers")]
+#endif
         public string Transfers { get; set; }
 
         /// <summary>
@@ -399,6 +549,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("treasury")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("treasury")]
+#endif
         public string Treasury { get; set; }
 
         /// <summary>
@@ -407,6 +560,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("twint_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("twint_payments")]
+#endif
         public string TwintPayments { get; set; }
 
         /// <summary>
@@ -415,6 +571,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("us_bank_account_ach_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account_ach_payments")]
+#endif
         public string UsBankAccountAchPayments { get; set; }
 
         /// <summary>
@@ -423,6 +582,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("us_bank_transfer_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_transfer_payments")]
+#endif
         public string UsBankTransferPayments { get; set; }
 
         /// <summary>
@@ -431,6 +593,9 @@ public class AccountCapabilities : StripeEntity<AccountCapabilities>
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("zip_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("zip_payments")]
+#endif
         public string ZipPayments { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountCompany.cs b/src/Stripe.net/Entities/Accounts/AccountCompany.cs
index 4b4ba2a5b6..ed9722d841 100644
--- a/src/Stripe.net/Entities/Accounts/AccountCompany.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountCompany.cs
@@ -2,22 +2,34 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCompany : StripeEntity<AccountCompany>
     {
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public Address Address { get; set; }
 
         /// <summary>
         /// The Kana variation of the company's primary address (Japan only).
         /// </summary>
         [JsonProperty("address_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_kana")]
+#endif
         public AddressJapan AddressKana { get; set; }
 
         /// <summary>
         /// The Kanji variation of the company's primary address (Japan only).
         /// </summary>
         [JsonProperty("address_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_kanji")]
+#endif
         public AddressJapan AddressKanji { get; set; }
 
         /// <summary>
@@ -27,6 +39,9 @@ public class AccountCompany : StripeEntity<AccountCompany>
         /// <c>directors_provided</c> parameter</a>.
         /// </summary>
         [JsonProperty("directors_provided")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("directors_provided")]
+#endif
         public bool DirectorsProvided { get; set; }
 
         /// <summary>
@@ -34,6 +49,9 @@ public class AccountCompany : StripeEntity<AccountCompany>
         /// current and correct.
         /// </summary>
         [JsonProperty("directorship_declaration")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("directorship_declaration")]
+#endif
         public AccountCompanyDirectorshipDeclaration DirectorshipDeclaration { get; set; }
 
         /// <summary>
@@ -44,6 +62,9 @@ public class AccountCompany : StripeEntity<AccountCompany>
         /// executives were provided.
         /// </summary>
         [JsonProperty("executives_provided")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("executives_provided")]
+#endif
         public bool ExecutivesProvided { get; set; }
 
         /// <summary>
@@ -51,30 +72,45 @@ public class AccountCompany : StripeEntity<AccountCompany>
         /// only).
         /// </summary>
         [JsonProperty("export_license_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("export_license_id")]
+#endif
         public string ExportLicenseId { get; set; }
 
         /// <summary>
         /// The purpose code to use for export transactions (India only).
         /// </summary>
         [JsonProperty("export_purpose_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("export_purpose_code")]
+#endif
         public string ExportPurposeCode { get; set; }
 
         /// <summary>
         /// The company's legal name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// The Kana variation of the company's legal name (Japan only).
         /// </summary>
         [JsonProperty("name_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name_kana")]
+#endif
         public string NameKana { get; set; }
 
         /// <summary>
         /// The Kanji variation of the company's legal name (Japan only).
         /// </summary>
         [JsonProperty("name_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name_kanji")]
+#endif
         public string NameKanji { get; set; }
 
         /// <summary>
@@ -87,6 +123,9 @@ public class AccountCompany : StripeEntity<AccountCompany>
         /// <c>percent_ownership</c> of each owner together).
         /// </summary>
         [JsonProperty("owners_provided")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("owners_provided")]
+#endif
         public bool OwnersProvided { get; set; }
 
         /// <summary>
@@ -94,6 +133,9 @@ public class AccountCompany : StripeEntity<AccountCompany>
         /// both current and correct.
         /// </summary>
         [JsonProperty("ownership_declaration")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ownership_declaration")]
+#endif
         public AccountCompanyOwnershipDeclaration OwnershipDeclaration { get; set; }
 
         /// <summary>
@@ -101,12 +143,18 @@ public class AccountCompany : StripeEntity<AccountCompany>
         /// <c>qualifies_as_financial_institution</c>.
         /// </summary>
         [JsonProperty("ownership_exemption_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ownership_exemption_reason")]
+#endif
         public string OwnershipExemptionReason { get; set; }
 
         /// <summary>
         /// The company's phone number (used for verification).
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
 
         /// <summary>
@@ -125,12 +173,18 @@ public class AccountCompany : StripeEntity<AccountCompany>
         /// <c>unincorporated_partnership</c>.
         /// </summary>
         [JsonProperty("structure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("structure")]
+#endif
         public string Structure { get; set; }
 
         /// <summary>
         /// Whether the company's business ID number was provided.
         /// </summary>
         [JsonProperty("tax_id_provided")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_id_provided")]
+#endif
         public bool TaxIdProvided { get; set; }
 
         /// <summary>
@@ -138,18 +192,27 @@ public class AccountCompany : StripeEntity<AccountCompany>
         /// only).
         /// </summary>
         [JsonProperty("tax_id_registrar")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_id_registrar")]
+#endif
         public string TaxIdRegistrar { get; set; }
 
         /// <summary>
         /// Whether the company's business VAT number was provided.
         /// </summary>
         [JsonProperty("vat_id_provided")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("vat_id_provided")]
+#endif
         public bool VatIdProvided { get; set; }
 
         /// <summary>
         /// Information on the verification state of the company.
         /// </summary>
         [JsonProperty("verification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification")]
+#endif
         public AccountCompanyVerification Verification { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountCompanyDirectorshipDeclaration.cs b/src/Stripe.net/Entities/Accounts/AccountCompanyDirectorshipDeclaration.cs
index 8eb816f5ce..3583f137e3 100644
--- a/src/Stripe.net/Entities/Accounts/AccountCompanyDirectorshipDeclaration.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountCompanyDirectorshipDeclaration.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCompanyDirectorshipDeclaration : StripeEntity<AccountCompanyDirectorshipDeclaration>
     {
@@ -12,12 +15,19 @@ public class AccountCompanyDirectorshipDeclaration : StripeEntity<AccountCompany
         /// </summary>
         [JsonProperty("date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? Date { get; set; }
 
         /// <summary>
         /// The IP address from which the directorship declaration attestation was made.
         /// </summary>
         [JsonProperty("ip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip")]
+#endif
         public string Ip { get; set; }
 
         /// <summary>
@@ -25,6 +35,9 @@ public class AccountCompanyDirectorshipDeclaration : StripeEntity<AccountCompany
         /// was made.
         /// </summary>
         [JsonProperty("user_agent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_agent")]
+#endif
         public string UserAgent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountCompanyOwnershipDeclaration.cs b/src/Stripe.net/Entities/Accounts/AccountCompanyOwnershipDeclaration.cs
index 56abe7cf78..35febcdef9 100644
--- a/src/Stripe.net/Entities/Accounts/AccountCompanyOwnershipDeclaration.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountCompanyOwnershipDeclaration.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCompanyOwnershipDeclaration : StripeEntity<AccountCompanyOwnershipDeclaration>
     {
@@ -12,18 +15,28 @@ public class AccountCompanyOwnershipDeclaration : StripeEntity<AccountCompanyOwn
         /// </summary>
         [JsonProperty("date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? Date { get; set; }
 
         /// <summary>
         /// The IP address from which the beneficial owner attestation was made.
         /// </summary>
         [JsonProperty("ip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip")]
+#endif
         public string Ip { get; set; }
 
         /// <summary>
         /// The user-agent string from the browser where the beneficial owner attestation was made.
         /// </summary>
         [JsonProperty("user_agent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_agent")]
+#endif
         public string UserAgent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountCompanyVerification.cs b/src/Stripe.net/Entities/Accounts/AccountCompanyVerification.cs
index e322ad0885..ad03c351e4 100644
--- a/src/Stripe.net/Entities/Accounts/AccountCompanyVerification.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountCompanyVerification.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCompanyVerification : StripeEntity<AccountCompanyVerification>
     {
         [JsonProperty("document")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("document")]
+#endif
         public AccountCompanyVerificationDocument Document { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountCompanyVerificationDocument.cs b/src/Stripe.net/Entities/Accounts/AccountCompanyVerificationDocument.cs
index e52c959c01..a86823f0e1 100644
--- a/src/Stripe.net/Entities/Accounts/AccountCompanyVerificationDocument.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountCompanyVerificationDocument.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class AccountCompanyVerificationDocument : StripeEntity<AccountCompanyVerificationDocument>
     {
         #region Expandable Back
@@ -15,6 +21,9 @@ public class AccountCompanyVerificationDocument : StripeEntity<AccountCompanyVer
         /// value of <c>additional_verification</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string BackId
         {
             get => this.InternalBack?.Id;
@@ -30,6 +39,9 @@ public string BackId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File Back
         {
             get => this.InternalBack?.ExpandedObject;
@@ -38,6 +50,10 @@ public File Back
 
         [JsonProperty("back")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("back")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalBack { get; set; }
         #endregion
 
@@ -45,6 +61,9 @@ public File Back
         /// A user-displayable string describing the verification state of this document.
         /// </summary>
         [JsonProperty("details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("details")]
+#endif
         public string Details { get; set; }
 
         /// <summary>
@@ -57,6 +76,9 @@ public File Back
         /// code specifying the verification state for this document.
         /// </summary>
         [JsonProperty("details_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("details_code")]
+#endif
         public string DetailsCode { get; set; }
 
         #region Expandable Front
@@ -68,6 +90,9 @@ public File Back
         /// value of <c>additional_verification</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string FrontId
         {
             get => this.InternalFront?.Id;
@@ -83,6 +108,9 @@ public string FrontId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File Front
         {
             get => this.InternalFront?.ExpandedObject;
@@ -91,6 +119,10 @@ public File Front
 
         [JsonProperty("front")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("front")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalFront { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Accounts/AccountController.cs b/src/Stripe.net/Entities/Accounts/AccountController.cs
index b79260bbed..fe8273fb13 100644
--- a/src/Stripe.net/Entities/Accounts/AccountController.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountController.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountController : StripeEntity<AccountController>
     {
         [JsonProperty("fees")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fees")]
+#endif
         public AccountControllerFees Fees { get; set; }
 
         /// <summary>
@@ -15,9 +21,15 @@ public class AccountController : StripeEntity<AccountController>
         /// controls</a>. Otherwise, this field is null.
         /// </summary>
         [JsonProperty("is_controller")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("is_controller")]
+#endif
         public bool IsController { get; set; }
 
         [JsonProperty("losses")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("losses")]
+#endif
         public AccountControllerLosses Losses { get; set; }
 
         /// <summary>
@@ -26,9 +38,15 @@ public class AccountController : StripeEntity<AccountController>
         /// One of: <c>application</c>, or <c>stripe</c>.
         /// </summary>
         [JsonProperty("requirement_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requirement_collection")]
+#endif
         public string RequirementCollection { get; set; }
 
         [JsonProperty("stripe_dashboard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("stripe_dashboard")]
+#endif
         public AccountControllerStripeDashboard StripeDashboard { get; set; }
 
         /// <summary>
@@ -37,6 +55,9 @@ public class AccountController : StripeEntity<AccountController>
         /// One of: <c>account</c>, or <c>application</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountControllerFees.cs b/src/Stripe.net/Entities/Accounts/AccountControllerFees.cs
index d1500628d7..24175a75a9 100644
--- a/src/Stripe.net/Entities/Accounts/AccountControllerFees.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountControllerFees.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountControllerFees : StripeEntity<AccountControllerFees>
     {
@@ -14,6 +17,9 @@ public class AccountControllerFees : StripeEntity<AccountControllerFees>
         /// <c>application_express</c>.
         /// </summary>
         [JsonProperty("payer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payer")]
+#endif
         public string Payer { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountControllerLosses.cs b/src/Stripe.net/Entities/Accounts/AccountControllerLosses.cs
index 62259213ac..67b316b256 100644
--- a/src/Stripe.net/Entities/Accounts/AccountControllerLosses.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountControllerLosses.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountControllerLosses : StripeEntity<AccountControllerLosses>
     {
@@ -11,6 +14,9 @@ public class AccountControllerLosses : StripeEntity<AccountControllerLosses>
         /// One of: <c>application</c>, or <c>stripe</c>.
         /// </summary>
         [JsonProperty("payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payments")]
+#endif
         public string Payments { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountControllerStripeDashboard.cs b/src/Stripe.net/Entities/Accounts/AccountControllerStripeDashboard.cs
index 72bc2e7380..052d49943a 100644
--- a/src/Stripe.net/Entities/Accounts/AccountControllerStripeDashboard.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountControllerStripeDashboard.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountControllerStripeDashboard : StripeEntity<AccountControllerStripeDashboard>
     {
@@ -11,6 +14,9 @@ public class AccountControllerStripeDashboard : StripeEntity<AccountControllerSt
         /// One of: <c>express</c>, <c>full</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountFutureRequirements.cs b/src/Stripe.net/Entities/Accounts/AccountFutureRequirements.cs
index 2be6abf5fa..e1b42b5480 100644
--- a/src/Stripe.net/Entities/Accounts/AccountFutureRequirements.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountFutureRequirements.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountFutureRequirements : StripeEntity<AccountFutureRequirements>
     {
@@ -13,6 +16,9 @@ public class AccountFutureRequirements : StripeEntity<AccountFutureRequirements>
         /// fields instead.
         /// </summary>
         [JsonProperty("alternatives")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alternatives")]
+#endif
         public List<AccountFutureRequirementsAlternative> Alternatives { get; set; }
 
         /// <summary>
@@ -23,6 +29,10 @@ public class AccountFutureRequirements : StripeEntity<AccountFutureRequirements>
         /// </summary>
         [JsonProperty("current_deadline")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("current_deadline")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? CurrentDeadline { get; set; }
 
         /// <summary>
@@ -31,6 +41,9 @@ public class AccountFutureRequirements : StripeEntity<AccountFutureRequirements>
         /// <c>requirements</c> hash.
         /// </summary>
         [JsonProperty("currently_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currently_due")]
+#endif
         public List<string> CurrentlyDue { get; set; }
 
         /// <summary>
@@ -43,6 +56,9 @@ public class AccountFutureRequirements : StripeEntity<AccountFutureRequirements>
         /// <c>requirements.pending_verification</c>, or <c>under_review</c>.
         /// </summary>
         [JsonProperty("disabled_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("disabled_reason")]
+#endif
         public string DisabledReason { get; set; }
 
         /// <summary>
@@ -50,6 +66,9 @@ public class AccountFutureRequirements : StripeEntity<AccountFutureRequirements>
         /// or verification failed.
         /// </summary>
         [JsonProperty("errors")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("errors")]
+#endif
         public List<AccountFutureRequirementsError> Errors { get; set; }
 
         /// <summary>
@@ -57,6 +76,9 @@ public class AccountFutureRequirements : StripeEntity<AccountFutureRequirements>
         /// appear in <c>currently_due</c> as well.
         /// </summary>
         [JsonProperty("eventually_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eventually_due")]
+#endif
         public List<string> EventuallyDue { get; set; }
 
         /// <summary>
@@ -66,6 +88,9 @@ public class AccountFutureRequirements : StripeEntity<AccountFutureRequirements>
         /// <c>requirements.past_due</c>.
         /// </summary>
         [JsonProperty("past_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("past_due")]
+#endif
         public List<string> PastDue { get; set; }
 
         /// <summary>
@@ -77,6 +102,9 @@ public class AccountFutureRequirements : StripeEntity<AccountFutureRequirements>
         /// pending.
         /// </summary>
         [JsonProperty("pending_verification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pending_verification")]
+#endif
         public List<string> PendingVerification { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountFutureRequirementsAlternative.cs b/src/Stripe.net/Entities/Accounts/AccountFutureRequirementsAlternative.cs
index 219510e264..0cafc95438 100644
--- a/src/Stripe.net/Entities/Accounts/AccountFutureRequirementsAlternative.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountFutureRequirementsAlternative.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountFutureRequirementsAlternative : StripeEntity<AccountFutureRequirementsAlternative>
     {
@@ -10,6 +13,9 @@ public class AccountFutureRequirementsAlternative : StripeEntity<AccountFutureRe
         /// Fields that can be provided to satisfy all fields in <c>original_fields_due</c>.
         /// </summary>
         [JsonProperty("alternative_fields_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alternative_fields_due")]
+#endif
         public List<string> AlternativeFieldsDue { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class AccountFutureRequirementsAlternative : StripeEntity<AccountFutureRe
         /// <c>alternative_fields_due</c>.
         /// </summary>
         [JsonProperty("original_fields_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("original_fields_due")]
+#endif
         public List<string> OriginalFieldsDue { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountFutureRequirementsError.cs b/src/Stripe.net/Entities/Accounts/AccountFutureRequirementsError.cs
index dd8d1342f0..c5e8e112b8 100644
--- a/src/Stripe.net/Entities/Accounts/AccountFutureRequirementsError.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountFutureRequirementsError.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountFutureRequirementsError : StripeEntity<AccountFutureRequirementsError>
     {
@@ -69,6 +72,9 @@ public class AccountFutureRequirementsError : StripeEntity<AccountFutureRequirem
         /// <c>verification_supportability</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
@@ -76,6 +82,9 @@ public class AccountFutureRequirementsError : StripeEntity<AccountFutureRequirem
         /// about the error.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
 
         /// <summary>
@@ -83,6 +92,9 @@ public class AccountFutureRequirementsError : StripeEntity<AccountFutureRequirem
         /// be resolved.
         /// </summary>
         [JsonProperty("requirement")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requirement")]
+#endif
         public string Requirement { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountGroups.cs b/src/Stripe.net/Entities/Accounts/AccountGroups.cs
index decfb24b42..5e4eb86f5b 100644
--- a/src/Stripe.net/Entities/Accounts/AccountGroups.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountGroups.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountGroups : StripeEntity<AccountGroups>
     {
@@ -12,6 +15,9 @@ public class AccountGroups : StripeEntity<AccountGroups>
         /// tool documentation</a> for details.
         /// </summary>
         [JsonProperty("payments_pricing")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payments_pricing")]
+#endif
         public string PaymentsPricing { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountRequirements.cs b/src/Stripe.net/Entities/Accounts/AccountRequirements.cs
index 3db1bd3e5c..f2a5291693 100644
--- a/src/Stripe.net/Entities/Accounts/AccountRequirements.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountRequirements.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountRequirements : StripeEntity<AccountRequirements>
     {
@@ -13,6 +16,9 @@ public class AccountRequirements : StripeEntity<AccountRequirements>
         /// fields instead.
         /// </summary>
         [JsonProperty("alternatives")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alternatives")]
+#endif
         public List<AccountRequirementsAlternative> Alternatives { get; set; }
 
         /// <summary>
@@ -22,6 +28,10 @@ public class AccountRequirements : StripeEntity<AccountRequirements>
         /// </summary>
         [JsonProperty("current_deadline")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("current_deadline")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? CurrentDeadline { get; set; }
 
         /// <summary>
@@ -30,6 +40,9 @@ public class AccountRequirements : StripeEntity<AccountRequirements>
         /// is disabled.
         /// </summary>
         [JsonProperty("currently_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currently_due")]
+#endif
         public List<string> CurrentlyDue { get; set; }
 
         /// <summary>
@@ -44,6 +57,9 @@ public class AccountRequirements : StripeEntity<AccountRequirements>
         /// <c>requirements.pending_verification</c>, or <c>under_review</c>.
         /// </summary>
         [JsonProperty("disabled_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("disabled_reason")]
+#endif
         public string DisabledReason { get; set; }
 
         /// <summary>
@@ -51,6 +67,9 @@ public class AccountRequirements : StripeEntity<AccountRequirements>
         /// or verification failed.
         /// </summary>
         [JsonProperty("errors")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("errors")]
+#endif
         public List<AccountRequirementsError> Errors { get; set; }
 
         /// <summary>
@@ -58,6 +77,9 @@ public class AccountRequirements : StripeEntity<AccountRequirements>
         /// appear in <c>currently_due</c> as well, and <c>current_deadline</c> becomes set.
         /// </summary>
         [JsonProperty("eventually_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eventually_due")]
+#endif
         public List<string> EventuallyDue { get; set; }
 
         /// <summary>
@@ -65,6 +87,9 @@ public class AccountRequirements : StripeEntity<AccountRequirements>
         /// collected to enable the account.
         /// </summary>
         [JsonProperty("past_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("past_due")]
+#endif
         public List<string> PastDue { get; set; }
 
         /// <summary>
@@ -76,6 +101,9 @@ public class AccountRequirements : StripeEntity<AccountRequirements>
         /// verification is still pending.
         /// </summary>
         [JsonProperty("pending_verification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pending_verification")]
+#endif
         public List<string> PendingVerification { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountRequirementsAlternative.cs b/src/Stripe.net/Entities/Accounts/AccountRequirementsAlternative.cs
index 67417940d9..1a342f531d 100644
--- a/src/Stripe.net/Entities/Accounts/AccountRequirementsAlternative.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountRequirementsAlternative.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountRequirementsAlternative : StripeEntity<AccountRequirementsAlternative>
     {
@@ -10,6 +13,9 @@ public class AccountRequirementsAlternative : StripeEntity<AccountRequirementsAl
         /// Fields that can be provided to satisfy all fields in <c>original_fields_due</c>.
         /// </summary>
         [JsonProperty("alternative_fields_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alternative_fields_due")]
+#endif
         public List<string> AlternativeFieldsDue { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class AccountRequirementsAlternative : StripeEntity<AccountRequirementsAl
         /// <c>alternative_fields_due</c>.
         /// </summary>
         [JsonProperty("original_fields_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("original_fields_due")]
+#endif
         public List<string> OriginalFieldsDue { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountRequirementsError.cs b/src/Stripe.net/Entities/Accounts/AccountRequirementsError.cs
index cc1a2e6ffe..9367a9426a 100644
--- a/src/Stripe.net/Entities/Accounts/AccountRequirementsError.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountRequirementsError.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountRequirementsError : StripeEntity<AccountRequirementsError>
     {
@@ -69,6 +72,9 @@ public class AccountRequirementsError : StripeEntity<AccountRequirementsError>
         /// <c>verification_supportability</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
@@ -76,6 +82,9 @@ public class AccountRequirementsError : StripeEntity<AccountRequirementsError>
         /// about the error.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
 
         /// <summary>
@@ -83,6 +92,9 @@ public class AccountRequirementsError : StripeEntity<AccountRequirementsError>
         /// be resolved.
         /// </summary>
         [JsonProperty("requirement")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requirement")]
+#endif
         public string Requirement { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountSettings.cs b/src/Stripe.net/Entities/Accounts/AccountSettings.cs
index 64d82493ab..43b9443f38 100644
--- a/src/Stripe.net/Entities/Accounts/AccountSettings.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountSettings.cs
@@ -2,37 +2,70 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSettings : StripeEntity<AccountSettings>
     {
         [JsonProperty("bacs_debit_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bacs_debit_payments")]
+#endif
         public AccountSettingsBacsDebitPayments BacsDebitPayments { get; set; }
 
         [JsonProperty("branding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("branding")]
+#endif
         public AccountSettingsBranding Branding { get; set; }
 
         [JsonProperty("card_issuing")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_issuing")]
+#endif
         public AccountSettingsCardIssuing CardIssuing { get; set; }
 
         [JsonProperty("card_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_payments")]
+#endif
         public AccountSettingsCardPayments CardPayments { get; set; }
 
         [JsonProperty("dashboard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dashboard")]
+#endif
         public AccountSettingsDashboard Dashboard { get; set; }
 
         [JsonProperty("invoices")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoices")]
+#endif
         public AccountSettingsInvoices Invoices { get; set; }
 
         [JsonProperty("payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payments")]
+#endif
         public AccountSettingsPayments Payments { get; set; }
 
         [JsonProperty("payouts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payouts")]
+#endif
         public AccountSettingsPayouts Payouts { get; set; }
 
         [JsonProperty("sepa_debit_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_debit_payments")]
+#endif
         public AccountSettingsSepaDebitPayments SepaDebitPayments { get; set; }
 
         [JsonProperty("treasury")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("treasury")]
+#endif
         public AccountSettingsTreasury Treasury { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountSettingsBacsDebitPayments.cs b/src/Stripe.net/Entities/Accounts/AccountSettingsBacsDebitPayments.cs
index f2cd4c8147..f3eb0dce88 100644
--- a/src/Stripe.net/Entities/Accounts/AccountSettingsBacsDebitPayments.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountSettingsBacsDebitPayments.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSettingsBacsDebitPayments : StripeEntity<AccountSettingsBacsDebitPayments>
     {
@@ -15,6 +18,9 @@ public class AccountSettingsBacsDebitPayments : StripeEntity<AccountSettingsBacs
         /// as "Stripe" and the account is onboarded to Stripe branding, which is free.
         /// </summary>
         [JsonProperty("display_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_name")]
+#endif
         public string DisplayName { get; set; }
 
         /// <summary>
@@ -23,6 +29,9 @@ public class AccountSettingsBacsDebitPayments : StripeEntity<AccountSettingsBacs
         /// partners.
         /// </summary>
         [JsonProperty("service_user_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("service_user_number")]
+#endif
         public string ServiceUserNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountSettingsBranding.cs b/src/Stripe.net/Entities/Accounts/AccountSettingsBranding.cs
index b4343a9246..89ac1de501 100644
--- a/src/Stripe.net/Entities/Accounts/AccountSettingsBranding.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountSettingsBranding.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class AccountSettingsBranding : StripeEntity<AccountSettingsBranding>
     {
         #region Expandable Icon
@@ -14,6 +20,9 @@ public class AccountSettingsBranding : StripeEntity<AccountSettingsBranding>
         /// for the account. Must be square and at least 128px x 128px.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string IconId
         {
             get => this.InternalIcon?.Id;
@@ -28,6 +37,9 @@ public string IconId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File Icon
         {
             get => this.InternalIcon?.ExpandedObject;
@@ -36,6 +48,10 @@ public File Icon
 
         [JsonProperty("icon")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("icon")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalIcon { get; set; }
         #endregion
 
@@ -48,6 +64,9 @@ public File Icon
         /// account's name next to it if provided. Must be at least 128px x 128px.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string LogoId
         {
             get => this.InternalLogo?.Id;
@@ -63,6 +82,9 @@ public string LogoId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File Logo
         {
             get => this.InternalLogo?.ExpandedObject;
@@ -71,6 +93,10 @@ public File Logo
 
         [JsonProperty("logo")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("logo")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalLogo { get; set; }
         #endregion
 
@@ -78,12 +104,18 @@ public File Logo
         /// A CSS hex color value representing the primary branding color for this account.
         /// </summary>
         [JsonProperty("primary_color")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("primary_color")]
+#endif
         public string PrimaryColor { get; set; }
 
         /// <summary>
         /// A CSS hex color value representing the secondary branding color for this account.
         /// </summary>
         [JsonProperty("secondary_color")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("secondary_color")]
+#endif
         public string SecondaryColor { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountSettingsCardIssuing.cs b/src/Stripe.net/Entities/Accounts/AccountSettingsCardIssuing.cs
index 9710876a00..5e1629d04a 100644
--- a/src/Stripe.net/Entities/Accounts/AccountSettingsCardIssuing.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountSettingsCardIssuing.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSettingsCardIssuing : StripeEntity<AccountSettingsCardIssuing>
     {
         [JsonProperty("tos_acceptance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tos_acceptance")]
+#endif
         public AccountSettingsCardIssuingTosAcceptance TosAcceptance { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountSettingsCardIssuingTosAcceptance.cs b/src/Stripe.net/Entities/Accounts/AccountSettingsCardIssuingTosAcceptance.cs
index 9f3581805d..d9f4661809 100644
--- a/src/Stripe.net/Entities/Accounts/AccountSettingsCardIssuingTosAcceptance.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountSettingsCardIssuingTosAcceptance.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSettingsCardIssuingTosAcceptance : StripeEntity<AccountSettingsCardIssuingTosAcceptance>
     {
@@ -13,12 +16,19 @@ public class AccountSettingsCardIssuingTosAcceptance : StripeEntity<AccountSetti
         /// </summary>
         [JsonProperty("date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? Date { get; set; }
 
         /// <summary>
         /// The IP address from which the account representative accepted the service agreement.
         /// </summary>
         [JsonProperty("ip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip")]
+#endif
         public string Ip { get; set; }
 
         /// <summary>
@@ -26,6 +36,9 @@ public class AccountSettingsCardIssuingTosAcceptance : StripeEntity<AccountSetti
         /// agreement.
         /// </summary>
         [JsonProperty("user_agent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_agent")]
+#endif
         public string UserAgent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountSettingsCardPayments.cs b/src/Stripe.net/Entities/Accounts/AccountSettingsCardPayments.cs
index 32a0fa2681..4c2fdd2f60 100644
--- a/src/Stripe.net/Entities/Accounts/AccountSettingsCardPayments.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountSettingsCardPayments.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSettingsCardPayments : StripeEntity<AccountSettingsCardPayments>
     {
         [JsonProperty("decline_on")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("decline_on")]
+#endif
         public AccountSettingsDeclineOn DeclineOn { get; set; }
 
         /// <summary>
@@ -15,6 +21,9 @@ public class AccountSettingsCardPayments : StripeEntity<AccountSettingsCardPayme
         /// dynamic portion.
         /// </summary>
         [JsonProperty("statement_descriptor_prefix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_prefix")]
+#endif
         public string StatementDescriptorPrefix { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class AccountSettingsCardPayments : StripeEntity<AccountSettingsCardPayme
         /// the dynamic portion.
         /// </summary>
         [JsonProperty("statement_descriptor_prefix_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_prefix_kana")]
+#endif
         public string StatementDescriptorPrefixKana { get; set; }
 
         /// <summary>
@@ -35,6 +47,9 @@ public class AccountSettingsCardPayments : StripeEntity<AccountSettingsCardPayme
         /// the dynamic portion.
         /// </summary>
         [JsonProperty("statement_descriptor_prefix_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_prefix_kanji")]
+#endif
         public string StatementDescriptorPrefixKanji { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountSettingsDashboard.cs b/src/Stripe.net/Entities/Accounts/AccountSettingsDashboard.cs
index 73da60b8d9..9f5b923011 100644
--- a/src/Stripe.net/Entities/Accounts/AccountSettingsDashboard.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountSettingsDashboard.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSettingsDashboard : StripeEntity<AccountSettingsDashboard>
     {
@@ -10,6 +13,9 @@ public class AccountSettingsDashboard : StripeEntity<AccountSettingsDashboard>
         /// between accounts.
         /// </summary>
         [JsonProperty("display_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_name")]
+#endif
         public string DisplayName { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class AccountSettingsDashboard : StripeEntity<AccountSettingsDashboard>
         /// Database</a>.
         /// </summary>
         [JsonProperty("timezone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("timezone")]
+#endif
         public string Timezone { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountSettingsDeclineOn.cs b/src/Stripe.net/Entities/Accounts/AccountSettingsDeclineOn.cs
index 60476cef4b..067ead9e3f 100644
--- a/src/Stripe.net/Entities/Accounts/AccountSettingsDeclineOn.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountSettingsDeclineOn.cs
@@ -1,13 +1,22 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSettingsDeclineOn : StripeEntity<AccountSettingsDeclineOn>
     {
         [JsonProperty("avs_failure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("avs_failure")]
+#endif
         public bool AvsFailure { get; set; }
 
         [JsonProperty("cvc_failure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cvc_failure")]
+#endif
         public bool CvcFailure { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountSettingsInvoices.cs b/src/Stripe.net/Entities/Accounts/AccountSettingsInvoices.cs
index 3037466ea0..c67803874d 100644
--- a/src/Stripe.net/Entities/Accounts/AccountSettingsInvoices.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountSettingsInvoices.cs
@@ -5,7 +5,13 @@ namespace Stripe
     using System.Linq;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class AccountSettingsInvoices : StripeEntity<AccountSettingsInvoices>
     {
         #region Expandable DefaultAccountTaxIds
@@ -16,6 +22,9 @@ public class AccountSettingsInvoices : StripeEntity<AccountSettingsInvoices>
         /// IDs get added when an invoice is finalized.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public List<string> DefaultAccountTaxIdIds
         {
             get => this.InternalDefaultAccountTaxIds?.Select((x) => x.Id).ToList();
@@ -30,6 +39,9 @@ public List<string> DefaultAccountTaxIdIds
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public List<TaxId> DefaultAccountTaxIds
         {
             get => this.InternalDefaultAccountTaxIds?.Select((x) => x.ExpandedObject).ToList();
@@ -37,6 +49,9 @@ public List<TaxId> DefaultAccountTaxIds
         }
 
         [JsonProperty("default_account_tax_ids", ItemConverterType = typeof(ExpandableFieldConverter<TaxId>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_account_tax_ids")]
+#endif
         internal List<ExpandableField<TaxId>> InternalDefaultAccountTaxIds { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Accounts/AccountSettingsPayments.cs b/src/Stripe.net/Entities/Accounts/AccountSettingsPayments.cs
index efda8893f0..c8379c5e9e 100644
--- a/src/Stripe.net/Entities/Accounts/AccountSettingsPayments.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountSettingsPayments.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSettingsPayments : StripeEntity<AccountSettingsPayments>
     {
@@ -10,6 +13,9 @@ public class AccountSettingsPayments : StripeEntity<AccountSettingsPayments>
         /// field prefixes any dynamic <c>statement_descriptor</c> specified on the charge.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class AccountSettingsPayments : StripeEntity<AccountSettingsPayments>
         /// requirements</a>.
         /// </summary>
         [JsonProperty("statement_descriptor_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_kana")]
+#endif
         public string StatementDescriptorKana { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class AccountSettingsPayments : StripeEntity<AccountSettingsPayments>
         /// requirements</a>.
         /// </summary>
         [JsonProperty("statement_descriptor_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_kanji")]
+#endif
         public string StatementDescriptorKanji { get; set; }
 
         /// <summary>
@@ -37,6 +49,9 @@ public class AccountSettingsPayments : StripeEntity<AccountSettingsPayments>
         /// requirements</a>.
         /// </summary>
         [JsonProperty("statement_descriptor_prefix_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_prefix_kana")]
+#endif
         public string StatementDescriptorPrefixKana { get; set; }
 
         /// <summary>
@@ -46,6 +61,9 @@ public class AccountSettingsPayments : StripeEntity<AccountSettingsPayments>
         /// requirements</a>.
         /// </summary>
         [JsonProperty("statement_descriptor_prefix_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_prefix_kanji")]
+#endif
         public string StatementDescriptorPrefixKanji { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountSettingsPayouts.cs b/src/Stripe.net/Entities/Accounts/AccountSettingsPayouts.cs
index df4864c76c..7a136a1503 100644
--- a/src/Stripe.net/Entities/Accounts/AccountSettingsPayouts.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountSettingsPayouts.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSettingsPayouts : StripeEntity<AccountSettingsPayouts>
     {
@@ -13,9 +16,15 @@ public class AccountSettingsPayouts : StripeEntity<AccountSettingsPayouts>
         /// is <c>application</c>, which includes Custom accounts, otherwise <c>true</c>.
         /// </summary>
         [JsonProperty("debit_negative_balances")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("debit_negative_balances")]
+#endif
         public bool DebitNegativeBalances { get; set; }
 
         [JsonProperty("schedule")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("schedule")]
+#endif
         public AccountSettingsPayoutsSchedule Schedule { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class AccountSettingsPayouts : StripeEntity<AccountSettingsPayouts>
         /// defaults to the platform's bank descriptor as set in the Dashboard.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountSettingsPayoutsSchedule.cs b/src/Stripe.net/Entities/Accounts/AccountSettingsPayoutsSchedule.cs
index 903478c236..1161bb7c55 100644
--- a/src/Stripe.net/Entities/Accounts/AccountSettingsPayoutsSchedule.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountSettingsPayoutsSchedule.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSettingsPayoutsSchedule : StripeEntity<AccountSettingsPayoutsSchedule>
     {
@@ -9,6 +12,9 @@ public class AccountSettingsPayoutsSchedule : StripeEntity<AccountSettingsPayout
         /// The number of days charges for the account will be held before being paid out.
         /// </summary>
         [JsonProperty("delay_days")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("delay_days")]
+#endif
         public long DelayDays { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class AccountSettingsPayoutsSchedule : StripeEntity<AccountSettingsPayout
         /// API call), <c>daily</c>, <c>weekly</c>, or <c>monthly</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class AccountSettingsPayoutsSchedule : StripeEntity<AccountSettingsPayout
         /// shorter months.
         /// </summary>
         [JsonProperty("monthly_anchor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("monthly_anchor")]
+#endif
         public long MonthlyAnchor { get; set; }
 
         /// <summary>
@@ -31,6 +43,9 @@ public class AccountSettingsPayoutsSchedule : StripeEntity<AccountSettingsPayout
         /// shown if <c>interval</c> is weekly.
         /// </summary>
         [JsonProperty("weekly_anchor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("weekly_anchor")]
+#endif
         public string WeeklyAnchor { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountSettingsSepaDebitPayments.cs b/src/Stripe.net/Entities/Accounts/AccountSettingsSepaDebitPayments.cs
index f828800df0..080f30a9f6 100644
--- a/src/Stripe.net/Entities/Accounts/AccountSettingsSepaDebitPayments.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountSettingsSepaDebitPayments.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSettingsSepaDebitPayments : StripeEntity<AccountSettingsSepaDebitPayments>
     {
@@ -9,6 +12,9 @@ public class AccountSettingsSepaDebitPayments : StripeEntity<AccountSettingsSepa
         /// SEPA creditor identifier that identifies the company making the payment.
         /// </summary>
         [JsonProperty("creditor_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("creditor_id")]
+#endif
         public string CreditorId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountSettingsTreasury.cs b/src/Stripe.net/Entities/Accounts/AccountSettingsTreasury.cs
index 0b8b1193ba..0e9f8fe90a 100644
--- a/src/Stripe.net/Entities/Accounts/AccountSettingsTreasury.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountSettingsTreasury.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSettingsTreasury : StripeEntity<AccountSettingsTreasury>
     {
         [JsonProperty("tos_acceptance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tos_acceptance")]
+#endif
         public AccountSettingsTreasuryTosAcceptance TosAcceptance { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountSettingsTreasuryTosAcceptance.cs b/src/Stripe.net/Entities/Accounts/AccountSettingsTreasuryTosAcceptance.cs
index b17cba9f54..9c5c1654aa 100644
--- a/src/Stripe.net/Entities/Accounts/AccountSettingsTreasuryTosAcceptance.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountSettingsTreasuryTosAcceptance.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSettingsTreasuryTosAcceptance : StripeEntity<AccountSettingsTreasuryTosAcceptance>
     {
@@ -13,12 +16,19 @@ public class AccountSettingsTreasuryTosAcceptance : StripeEntity<AccountSettings
         /// </summary>
         [JsonProperty("date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? Date { get; set; }
 
         /// <summary>
         /// The IP address from which the account representative accepted the service agreement.
         /// </summary>
         [JsonProperty("ip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip")]
+#endif
         public string Ip { get; set; }
 
         /// <summary>
@@ -26,6 +36,9 @@ public class AccountSettingsTreasuryTosAcceptance : StripeEntity<AccountSettings
         /// agreement.
         /// </summary>
         [JsonProperty("user_agent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_agent")]
+#endif
         public string UserAgent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Accounts/AccountTosAcceptance.cs b/src/Stripe.net/Entities/Accounts/AccountTosAcceptance.cs
index d4fd7e9495..480091714a 100644
--- a/src/Stripe.net/Entities/Accounts/AccountTosAcceptance.cs
+++ b/src/Stripe.net/Entities/Accounts/AccountTosAcceptance.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountTosAcceptance : StripeEntity<AccountTosAcceptance>
     {
@@ -13,18 +16,28 @@ public class AccountTosAcceptance : StripeEntity<AccountTosAcceptance>
         /// </summary>
         [JsonProperty("date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? Date { get; set; }
 
         /// <summary>
         /// The IP address from which the account representative accepted their service agreement.
         /// </summary>
         [JsonProperty("ip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip")]
+#endif
         public string Ip { get; set; }
 
         /// <summary>
         /// The user's service agreement type.
         /// </summary>
         [JsonProperty("service_agreement")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("service_agreement")]
+#endif
         public string ServiceAgreement { get; set; }
 
         /// <summary>
@@ -32,6 +45,9 @@ public class AccountTosAcceptance : StripeEntity<AccountTosAcceptance>
         /// service agreement.
         /// </summary>
         [JsonProperty("user_agent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_agent")]
+#endif
         public string UserAgent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ApplePayDomains/ApplePayDomain.cs b/src/Stripe.net/Entities/ApplePayDomains/ApplePayDomain.cs
index 2261b97b7a..6dde6e4204 100644
--- a/src/Stripe.net/Entities/ApplePayDomains/ApplePayDomain.cs
+++ b/src/Stripe.net/Entities/ApplePayDomains/ApplePayDomain.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ApplePayDomain : StripeEntity<ApplePayDomain>, IHasId, IHasObject
     {
@@ -11,12 +14,18 @@ public class ApplePayDomain : StripeEntity<ApplePayDomain>, IHasId, IHasObject
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -24,15 +33,26 @@ public class ApplePayDomain : StripeEntity<ApplePayDomain>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// Whether this object is deleted or not.
         /// </summary>
         [JsonProperty("deleted", NullValueHandling = NullValueHandling.Ignore)]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+        [STJS.JsonIgnore(Condition = STJS.JsonIgnoreCondition.WhenWritingNull)]
+#endif
         public bool? Deleted { get; set; }
 
         [JsonProperty("domain_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("domain_name")]
+#endif
         public string DomainName { get; set; }
 
         /// <summary>
@@ -40,6 +60,9 @@ public class ApplePayDomain : StripeEntity<ApplePayDomain>, IHasId, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ApplicationFeeRefunds/ApplicationFeeRefund.cs b/src/Stripe.net/Entities/ApplicationFeeRefunds/ApplicationFeeRefund.cs
index 83c622c089..f1665caa38 100644
--- a/src/Stripe.net/Entities/ApplicationFeeRefunds/ApplicationFeeRefund.cs
+++ b/src/Stripe.net/Entities/ApplicationFeeRefunds/ApplicationFeeRefund.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// <c>Application Fee Refund</c> objects allow you to refund an application fee that has
@@ -15,24 +18,36 @@ namespace Stripe
     /// href="https://stripe.com/docs/connect/destination-charges#refunding-app-fee">Refunding
     /// application fees</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class ApplicationFeeRefund : StripeEntity<ApplicationFeeRefund>, IHasId, IHasMetadata, IHasObject, IBalanceTransactionSource
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Amount, in cents (or local equivalent).
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         #region Expandable BalanceTransaction
@@ -42,6 +57,9 @@ public class ApplicationFeeRefund : StripeEntity<ApplicationFeeRefund>, IHasId,
         /// Balance transaction that describes the impact on your account balance.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string BalanceTransactionId
         {
             get => this.InternalBalanceTransaction?.Id;
@@ -55,6 +73,9 @@ public string BalanceTransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public BalanceTransaction BalanceTransaction
         {
             get => this.InternalBalanceTransaction?.ExpandedObject;
@@ -63,6 +84,10 @@ public BalanceTransaction BalanceTransaction
 
         [JsonProperty("balance_transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<BalanceTransaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("balance_transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<BalanceTransaction>))]
+#endif
         internal ExpandableField<BalanceTransaction> InternalBalanceTransaction { get; set; }
         #endregion
 
@@ -71,6 +96,10 @@ public BalanceTransaction BalanceTransaction
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -79,6 +108,9 @@ public BalanceTransaction BalanceTransaction
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         #region Expandable Fee
@@ -88,6 +120,9 @@ public BalanceTransaction BalanceTransaction
         /// ID of the application fee that was refunded.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string FeeId
         {
             get => this.InternalFee?.Id;
@@ -101,6 +136,9 @@ public string FeeId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public ApplicationFee Fee
         {
             get => this.InternalFee?.ExpandedObject;
@@ -109,6 +147,10 @@ public ApplicationFee Fee
 
         [JsonProperty("fee")]
         [JsonConverter(typeof(ExpandableFieldConverter<ApplicationFee>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fee")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<ApplicationFee>))]
+#endif
         internal ExpandableField<ApplicationFee> InternalFee { get; set; }
         #endregion
 
@@ -118,6 +160,9 @@ public ApplicationFee Fee
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ApplicationFees/ApplicationFee.cs b/src/Stripe.net/Entities/ApplicationFees/ApplicationFee.cs
index 065681896d..b70c237f0e 100644
--- a/src/Stripe.net/Entities/ApplicationFees/ApplicationFee.cs
+++ b/src/Stripe.net/Entities/ApplicationFees/ApplicationFee.cs
@@ -4,19 +4,31 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class ApplicationFee : StripeEntity<ApplicationFee>, IHasId, IHasObject, IBalanceTransactionSource
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         #region Expandable Account
@@ -26,6 +38,9 @@ public class ApplicationFee : StripeEntity<ApplicationFee>, IHasId, IHasObject,
         /// ID of the Stripe account this fee was taken from.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AccountId
         {
             get => this.InternalAccount?.Id;
@@ -39,6 +54,9 @@ public string AccountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Account
         {
             get => this.InternalAccount?.ExpandedObject;
@@ -47,6 +65,10 @@ public Account Account
 
         [JsonProperty("account")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalAccount { get; set; }
         #endregion
 
@@ -54,6 +76,9 @@ public Account Account
         /// Amount earned, in cents (or local equivalent).
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -61,6 +86,9 @@ public Account Account
         /// the fee if a partial refund was issued).
         /// </summary>
         [JsonProperty("amount_refunded")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_refunded")]
+#endif
         public long AmountRefunded { get; set; }
 
         #region Expandable Application
@@ -70,6 +98,9 @@ public Account Account
         /// ID of the Connect application that earned the fee.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ApplicationId
         {
             get => this.InternalApplication?.Id;
@@ -83,6 +114,9 @@ public string ApplicationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Application Application
         {
             get => this.InternalApplication?.ExpandedObject;
@@ -91,6 +125,10 @@ public Application Application
 
         [JsonProperty("application")]
         [JsonConverter(typeof(ExpandableFieldConverter<Application>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Application>))]
+#endif
         internal ExpandableField<Application> InternalApplication { get; set; }
         #endregion
 
@@ -102,6 +140,9 @@ public Application Application
         /// account balance (not including refunds).
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string BalanceTransactionId
         {
             get => this.InternalBalanceTransaction?.Id;
@@ -116,6 +157,9 @@ public string BalanceTransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public BalanceTransaction BalanceTransaction
         {
             get => this.InternalBalanceTransaction?.ExpandedObject;
@@ -124,6 +168,10 @@ public BalanceTransaction BalanceTransaction
 
         [JsonProperty("balance_transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<BalanceTransaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("balance_transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<BalanceTransaction>))]
+#endif
         internal ExpandableField<BalanceTransaction> InternalBalanceTransaction { get; set; }
         #endregion
 
@@ -134,6 +182,9 @@ public BalanceTransaction BalanceTransaction
         /// ID of the charge that the application fee was taken from.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ChargeId
         {
             get => this.InternalCharge?.Id;
@@ -147,6 +198,9 @@ public string ChargeId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Charge Charge
         {
             get => this.InternalCharge?.ExpandedObject;
@@ -155,6 +209,10 @@ public Charge Charge
 
         [JsonProperty("charge")]
         [JsonConverter(typeof(ExpandableFieldConverter<Charge>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("charge")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Charge>))]
+#endif
         internal ExpandableField<Charge> InternalCharge { get; set; }
         #endregion
 
@@ -163,6 +221,10 @@ public Charge Charge
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -171,6 +233,9 @@ public Charge Charge
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -178,6 +243,9 @@ public Charge Charge
         /// fee was created from.
         /// </summary>
         [JsonProperty("fee_source")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fee_source")]
+#endif
         public ApplicationFeeFeeSource FeeSource { get; set; }
 
         /// <summary>
@@ -185,6 +253,9 @@ public Charge Charge
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         #region Expandable OriginatingTransaction
@@ -195,6 +266,9 @@ public Charge Charge
         /// charge using the <c>destination</c> parameter.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string OriginatingTransactionId
         {
             get => this.InternalOriginatingTransaction?.Id;
@@ -209,6 +283,9 @@ public string OriginatingTransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Charge OriginatingTransaction
         {
             get => this.InternalOriginatingTransaction?.ExpandedObject;
@@ -217,6 +294,10 @@ public Charge OriginatingTransaction
 
         [JsonProperty("originating_transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<Charge>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("originating_transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Charge>))]
+#endif
         internal ExpandableField<Charge> InternalOriginatingTransaction { get; set; }
         #endregion
 
@@ -225,12 +306,18 @@ public Charge OriginatingTransaction
         /// attribute will still be false.
         /// </summary>
         [JsonProperty("refunded")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refunded")]
+#endif
         public bool Refunded { get; set; }
 
         /// <summary>
         /// A list of refunds that have been applied to the fee.
         /// </summary>
         [JsonProperty("refunds")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refunds")]
+#endif
         public StripeList<ApplicationFeeRefund> Refunds { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ApplicationFees/ApplicationFeeFeeSource.cs b/src/Stripe.net/Entities/ApplicationFees/ApplicationFeeFeeSource.cs
index 8f246b2dfd..3234bc6ccd 100644
--- a/src/Stripe.net/Entities/ApplicationFees/ApplicationFeeFeeSource.cs
+++ b/src/Stripe.net/Entities/ApplicationFees/ApplicationFeeFeeSource.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ApplicationFeeFeeSource : StripeEntity<ApplicationFeeFeeSource>
     {
@@ -9,12 +12,18 @@ public class ApplicationFeeFeeSource : StripeEntity<ApplicationFeeFeeSource>
         /// Charge ID that created this application fee.
         /// </summary>
         [JsonProperty("charge")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("charge")]
+#endif
         public string Charge { get; set; }
 
         /// <summary>
         /// Payout ID that created this application fee.
         /// </summary>
         [JsonProperty("payout")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payout")]
+#endif
         public string Payout { get; set; }
 
         /// <summary>
@@ -22,6 +31,9 @@ public class ApplicationFeeFeeSource : StripeEntity<ApplicationFeeFeeSource>
         /// One of: <c>charge</c>, or <c>payout</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Applications/Application.cs b/src/Stripe.net/Entities/Applications/Application.cs
index f525c48c6f..fa99bcc73e 100644
--- a/src/Stripe.net/Entities/Applications/Application.cs
+++ b/src/Stripe.net/Entities/Applications/Application.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class Application : StripeEntity<Application>, IHasId, IHasObject
     {
@@ -9,24 +12,37 @@ public class Application : StripeEntity<Application>, IHasId, IHasObject
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Whether this object is deleted or not.
         /// </summary>
         [JsonProperty("deleted", NullValueHandling = NullValueHandling.Ignore)]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+        [STJS.JsonIgnore(Condition = STJS.JsonIgnoreCondition.WhenWritingNull)]
+#endif
         public bool? Deleted { get; set; }
 
         /// <summary>
         /// The name of the application.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Apps/Secrets/Secret.cs b/src/Stripe.net/Entities/Apps/Secrets/Secret.cs
index bc93ce8b5c..a9120c282b 100644
--- a/src/Stripe.net/Entities/Apps/Secrets/Secret.cs
+++ b/src/Stripe.net/Entities/Apps/Secrets/Secret.cs
@@ -4,6 +4,9 @@ namespace Stripe.Apps
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Secret Store is an API that allows Stripe Apps developers to securely persist secrets
@@ -30,12 +33,18 @@ public class Secret : StripeEntity<Secret>, IHasId, IHasObject
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -43,12 +52,19 @@ public class Secret : StripeEntity<Secret>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// If true, indicates that this secret has been deleted.
         /// </summary>
         [JsonProperty("deleted", NullValueHandling = NullValueHandling.Ignore)]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+#endif
         public bool Deleted { get; set; }
 
         /// <summary>
@@ -56,6 +72,10 @@ public class Secret : StripeEntity<Secret>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpiresAt { get; set; }
 
         /// <summary>
@@ -63,21 +83,33 @@ public class Secret : StripeEntity<Secret>, IHasId, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
         /// A name for the secret that's unique within the scope.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// The plaintext secret value to be stored.
         /// </summary>
         [JsonProperty("payload")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payload")]
+#endif
         public string Payload { get; set; }
 
         [JsonProperty("scope")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("scope")]
+#endif
         public SecretScope Scope { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Apps/Secrets/SecretScope.cs b/src/Stripe.net/Entities/Apps/Secrets/SecretScope.cs
index 9343fe46e8..fc8fa5b3ea 100644
--- a/src/Stripe.net/Entities/Apps/Secrets/SecretScope.cs
+++ b/src/Stripe.net/Entities/Apps/Secrets/SecretScope.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Apps
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SecretScope : StripeEntity<SecretScope>
     {
@@ -10,12 +13,18 @@ public class SecretScope : StripeEntity<SecretScope>
         /// One of: <c>account</c>, or <c>user</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
         /// The user ID, if type is set to "user".
         /// </summary>
         [JsonProperty("user")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user")]
+#endif
         public string User { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Balance/BalanceAmount.cs b/src/Stripe.net/Entities/Balance/BalanceAmount.cs
index 35f9af34af..d69ddf4493 100644
--- a/src/Stripe.net/Entities/Balance/BalanceAmount.cs
+++ b/src/Stripe.net/Entities/Balance/BalanceAmount.cs
@@ -2,16 +2,28 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class BalanceAmount : StripeEntity<BalanceAmount>
     {
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         [JsonProperty("source_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source_types")]
+#endif
         public Dictionary<string, long> SourceTypes { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BalanceTransactions/BalanceTransaction.cs b/src/Stripe.net/Entities/BalanceTransactions/BalanceTransaction.cs
index 2db2f0bb53..314ce98fda 100644
--- a/src/Stripe.net/Entities/BalanceTransactions/BalanceTransaction.cs
+++ b/src/Stripe.net/Entities/BalanceTransactions/BalanceTransaction.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Balance transactions represent funds moving through your Stripe account. Stripe creates
@@ -14,18 +17,27 @@ namespace Stripe
     /// href="https://stripe.com/docs/reports/balance-transaction-types">Balance transaction
     /// types</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class BalanceTransaction : StripeEntity<BalanceTransaction>, IHasId, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -34,6 +46,9 @@ public class BalanceTransaction : StripeEntity<BalanceTransaction>, IHasId, IHas
         /// another party.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -41,6 +56,10 @@ public class BalanceTransaction : StripeEntity<BalanceTransaction>, IHasId, IHas
         /// </summary>
         [JsonProperty("available_on")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available_on")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime AvailableOn { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -48,6 +67,10 @@ public class BalanceTransaction : StripeEntity<BalanceTransaction>, IHasId, IHas
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -56,12 +79,18 @@ public class BalanceTransaction : StripeEntity<BalanceTransaction>, IHasId, IHas
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -74,6 +103,9 @@ public class BalanceTransaction : StripeEntity<BalanceTransaction>, IHasId, IHas
         /// and the <c>exchange_rate</c> is <c>1.234</c>.
         /// </summary>
         [JsonProperty("exchange_rate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exchange_rate")]
+#endif
         public decimal? ExchangeRate { get; set; }
 
         /// <summary>
@@ -81,12 +113,18 @@ public class BalanceTransaction : StripeEntity<BalanceTransaction>, IHasId, IHas
         /// positive integer when assessed.
         /// </summary>
         [JsonProperty("fee")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fee")]
+#endif
         public long Fee { get; set; }
 
         /// <summary>
         /// Detailed breakdown of fees (in cents (or local equivalent)) paid for this transaction.
         /// </summary>
         [JsonProperty("fee_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fee_details")]
+#endif
         public List<BalanceTransactionFeeDetail> FeeDetails { get; set; }
 
         /// <summary>
@@ -96,6 +134,9 @@ public class BalanceTransaction : StripeEntity<BalanceTransaction>, IHasId, IHas
         /// - <c>fee</c>.
         /// </summary>
         [JsonProperty("net")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("net")]
+#endif
         public long Net { get; set; }
 
         /// <summary>
@@ -104,6 +145,9 @@ public class BalanceTransaction : StripeEntity<BalanceTransaction>, IHasId, IHas
         /// help you understand balance transactions from an accounting perspective.
         /// </summary>
         [JsonProperty("reporting_category")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reporting_category")]
+#endif
         public string ReportingCategory { get; set; }
 
         #region Expandable Source
@@ -113,6 +157,9 @@ public class BalanceTransaction : StripeEntity<BalanceTransaction>, IHasId, IHas
         /// This transaction relates to the Stripe object.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string SourceId
         {
             get => this.InternalSource?.Id;
@@ -126,6 +173,9 @@ public string SourceId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public IBalanceTransactionSource Source
         {
             get => this.InternalSource?.ExpandedObject;
@@ -134,6 +184,10 @@ public IBalanceTransactionSource Source
 
         [JsonProperty("source")]
         [JsonConverter(typeof(ExpandableFieldConverter<IBalanceTransactionSource>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<IBalanceTransactionSource>))]
+#endif
         internal ExpandableField<IBalanceTransactionSource> InternalSource { get; set; }
         #endregion
 
@@ -142,6 +196,9 @@ public IBalanceTransactionSource Source
         /// <c>available</c> or <c>pending</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -180,6 +237,9 @@ public IBalanceTransactionSource Source
         /// or <c>transfer_refund</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BalanceTransactions/BalanceTransactionFeeDetail.cs b/src/Stripe.net/Entities/BalanceTransactions/BalanceTransactionFeeDetail.cs
index a6251f8a1a..65a604fc13 100644
--- a/src/Stripe.net/Entities/BalanceTransactions/BalanceTransactionFeeDetail.cs
+++ b/src/Stripe.net/Entities/BalanceTransactions/BalanceTransactionFeeDetail.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class BalanceTransactionFeeDetail : StripeEntity<BalanceTransactionFeeDetail>
     {
@@ -9,12 +12,18 @@ public class BalanceTransactionFeeDetail : StripeEntity<BalanceTransactionFeeDet
         /// Amount of the fee, in cents.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
         /// ID of the Connect application that earned the fee.
         /// </summary>
         [JsonProperty("application")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application")]
+#endif
         public string Application { get; set; }
 
         /// <summary>
@@ -23,12 +32,18 @@ public class BalanceTransactionFeeDetail : StripeEntity<BalanceTransactionFeeDet
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -36,6 +51,9 @@ public class BalanceTransactionFeeDetail : StripeEntity<BalanceTransactionFeeDet
         /// <c>stripe_fee</c> or <c>tax</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Balances/Balance.cs b/src/Stripe.net/Entities/Balances/Balance.cs
index 8eef1b78bc..00d97fdb2e 100644
--- a/src/Stripe.net/Entities/Balances/Balance.cs
+++ b/src/Stripe.net/Entities/Balances/Balance.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// This is an object representing your Stripe balance. You can retrieve it to see the
@@ -24,6 +27,9 @@ public class Balance : StripeEntity<Balance>, IHasObject
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -33,6 +39,9 @@ public class Balance : StripeEntity<Balance>, IHasObject
         /// balance for each currency and payment type in the <c>source_types</c> property.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public List<BalanceAmount> Available { get; set; }
 
         /// <summary>
@@ -42,15 +51,24 @@ public class Balance : StripeEntity<Balance>, IHasObject
         /// balance for each currency and payment type in the <c>source_types</c> property.
         /// </summary>
         [JsonProperty("connect_reserved")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("connect_reserved")]
+#endif
         public List<BalanceAmount> ConnectReserved { get; set; }
 
         /// <summary>
         /// Funds that you can pay out using Instant Payouts.
         /// </summary>
         [JsonProperty("instant_available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("instant_available")]
+#endif
         public List<BalanceInstantAvailable> InstantAvailable { get; set; }
 
         [JsonProperty("issuing")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuing")]
+#endif
         public BalanceIssuing Issuing { get; set; }
 
         /// <summary>
@@ -58,6 +76,9 @@ public class Balance : StripeEntity<Balance>, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -65,6 +86,9 @@ public class Balance : StripeEntity<Balance>, IHasObject
         /// each currency and each payment type in the <c>source_types</c> property.
         /// </summary>
         [JsonProperty("pending")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pending")]
+#endif
         public List<BalanceAmount> Pending { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Balances/BalanceInstantAvailable.cs b/src/Stripe.net/Entities/Balances/BalanceInstantAvailable.cs
index c04ad1cf5a..06665afa66 100644
--- a/src/Stripe.net/Entities/Balances/BalanceInstantAvailable.cs
+++ b/src/Stripe.net/Entities/Balances/BalanceInstantAvailable.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class BalanceInstantAvailable : StripeEntity<BalanceInstantAvailable>
     {
@@ -10,6 +13,9 @@ public class BalanceInstantAvailable : StripeEntity<BalanceInstantAvailable>
         /// Balance amount.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -18,15 +24,24 @@ public class BalanceInstantAvailable : StripeEntity<BalanceInstantAvailable>
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// Breakdown of balance by destination.
         /// </summary>
         [JsonProperty("net_available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("net_available")]
+#endif
         public List<BalanceInstantAvailableNetAvailable> NetAvailable { get; set; }
 
         [JsonProperty("source_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source_types")]
+#endif
         public BalanceInstantAvailableSourceTypes SourceTypes { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Balances/BalanceInstantAvailableNetAvailable.cs b/src/Stripe.net/Entities/Balances/BalanceInstantAvailableNetAvailable.cs
index 37674075c8..c3f293570e 100644
--- a/src/Stripe.net/Entities/Balances/BalanceInstantAvailableNetAvailable.cs
+++ b/src/Stripe.net/Entities/Balances/BalanceInstantAvailableNetAvailable.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class BalanceInstantAvailableNetAvailable : StripeEntity<BalanceInstantAvailableNetAvailable>
     {
@@ -9,15 +12,24 @@ public class BalanceInstantAvailableNetAvailable : StripeEntity<BalanceInstantAv
         /// Net balance amount, subtracting fees from platform-set pricing.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
         /// ID of the external account for this net balance (not expandable).
         /// </summary>
         [JsonProperty("destination")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination")]
+#endif
         public string Destination { get; set; }
 
         [JsonProperty("source_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source_types")]
+#endif
         public BalanceInstantAvailableNetAvailableSourceTypes SourceTypes { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Balances/BalanceInstantAvailableNetAvailableSourceTypes.cs b/src/Stripe.net/Entities/Balances/BalanceInstantAvailableNetAvailableSourceTypes.cs
index e0c53b7d05..7ed5262d7a 100644
--- a/src/Stripe.net/Entities/Balances/BalanceInstantAvailableNetAvailableSourceTypes.cs
+++ b/src/Stripe.net/Entities/Balances/BalanceInstantAvailableNetAvailableSourceTypes.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class BalanceInstantAvailableNetAvailableSourceTypes : StripeEntity<BalanceInstantAvailableNetAvailableSourceTypes>
     {
@@ -10,6 +13,9 @@ public class BalanceInstantAvailableNetAvailableSourceTypes : StripeEntity<Balan
         /// payments</a>.
         /// </summary>
         [JsonProperty("bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_account")]
+#endif
         public long BankAccount { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class BalanceInstantAvailableNetAvailableSourceTypes : StripeEntity<Balan
         /// href="https://docs.stripe.com/payments/bank-debits">non-legacy bank debits</a>.
         /// </summary>
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public long Card { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class BalanceInstantAvailableNetAvailableSourceTypes : StripeEntity<Balan
         /// payment method.
         /// </summary>
         [JsonProperty("fpx")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fpx")]
+#endif
         public long Fpx { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Balances/BalanceInstantAvailableSourceTypes.cs b/src/Stripe.net/Entities/Balances/BalanceInstantAvailableSourceTypes.cs
index 84da3de041..a203081065 100644
--- a/src/Stripe.net/Entities/Balances/BalanceInstantAvailableSourceTypes.cs
+++ b/src/Stripe.net/Entities/Balances/BalanceInstantAvailableSourceTypes.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class BalanceInstantAvailableSourceTypes : StripeEntity<BalanceInstantAvailableSourceTypes>
     {
@@ -10,6 +13,9 @@ public class BalanceInstantAvailableSourceTypes : StripeEntity<BalanceInstantAva
         /// payments</a>.
         /// </summary>
         [JsonProperty("bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_account")]
+#endif
         public long BankAccount { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class BalanceInstantAvailableSourceTypes : StripeEntity<BalanceInstantAva
         /// href="https://docs.stripe.com/payments/bank-debits">non-legacy bank debits</a>.
         /// </summary>
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public long Card { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class BalanceInstantAvailableSourceTypes : StripeEntity<BalanceInstantAva
         /// payment method.
         /// </summary>
         [JsonProperty("fpx")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fpx")]
+#endif
         public long Fpx { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Balances/BalanceIssuing.cs b/src/Stripe.net/Entities/Balances/BalanceIssuing.cs
index 2a7c2413cf..e278fbf8f1 100644
--- a/src/Stripe.net/Entities/Balances/BalanceIssuing.cs
+++ b/src/Stripe.net/Entities/Balances/BalanceIssuing.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class BalanceIssuing : StripeEntity<BalanceIssuing>
     {
@@ -10,6 +13,9 @@ public class BalanceIssuing : StripeEntity<BalanceIssuing>
         /// Funds that are available for use.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public List<BalanceAmount> Available { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BankAccounts/BankAccount.cs b/src/Stripe.net/Entities/BankAccounts/BankAccount.cs
index 03c0d4e687..d8a215d97f 100644
--- a/src/Stripe.net/Entities/BankAccounts/BankAccount.cs
+++ b/src/Stripe.net/Entities/BankAccounts/BankAccount.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// These bank accounts are payment methods on <c>Customer</c> objects.
@@ -15,18 +18,27 @@ namespace Stripe
     /// Related guide: <a href="https://stripe.com/payments/bank-debits-transfers">Bank debits
     /// and transfers</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class BankAccount : StripeEntity<BankAccount>, IHasId, IHasMetadata, IHasObject, IExternalAccount, IPaymentSource
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         #region Expandable Account
@@ -36,6 +48,9 @@ public class BankAccount : StripeEntity<BankAccount>, IHasId, IHasMetadata, IHas
         /// The ID of the account that the bank account is associated with.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AccountId
         {
             get => this.InternalAccount?.Id;
@@ -49,6 +64,9 @@ public string AccountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Account
         {
             get => this.InternalAccount?.ExpandedObject;
@@ -57,6 +75,10 @@ public Account Account
 
         [JsonProperty("account")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalAccount { get; set; }
         #endregion
 
@@ -64,6 +86,9 @@ public Account Account
         /// The name of the person or business that owns the bank account.
         /// </summary>
         [JsonProperty("account_holder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_name")]
+#endif
         public string AccountHolderName { get; set; }
 
         /// <summary>
@@ -71,6 +96,9 @@ public Account Account
         /// <c>company</c>.
         /// </summary>
         [JsonProperty("account_holder_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_type")]
+#endif
         public string AccountHolderType { get; set; }
 
         /// <summary>
@@ -78,6 +106,9 @@ public Account Account
         /// countries. In Japan, this can only be <c>futsu</c> or <c>toza</c>.
         /// </summary>
         [JsonProperty("account_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_type")]
+#endif
         public string AccountType { get; set; }
 
         /// <summary>
@@ -86,18 +117,27 @@ public Account Account
         /// One of: <c>instant</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("available_payout_methods")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available_payout_methods")]
+#endif
         public List<string> AvailablePayoutMethods { get; set; }
 
         /// <summary>
         /// Name of the bank associated with the routing number (e.g., <c>WELLS FARGO</c>).
         /// </summary>
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         /// <summary>
         /// Two-letter ISO code representing the country the bank account is located in.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -105,6 +145,9 @@ public Account Account
         /// paid out to the bank account.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         #region Expandable Customer
@@ -114,6 +157,9 @@ public Account Account
         /// The ID of the customer that the bank account is associated with.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerId
         {
             get => this.InternalCustomer?.Id;
@@ -127,6 +173,9 @@ public string CustomerId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Customer Customer
         {
             get => this.InternalCustomer?.ExpandedObject;
@@ -135,6 +184,10 @@ public Customer Customer
 
         [JsonProperty("customer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Customer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Customer>))]
+#endif
         internal ExpandableField<Customer> InternalCustomer { get; set; }
         #endregion
 
@@ -142,12 +195,19 @@ public Customer Customer
         /// Whether this bank account is the default external account for its currency.
         /// </summary>
         [JsonProperty("default_for_currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_for_currency")]
+#endif
         public bool? DefaultForCurrency { get; set; }
 
         /// <summary>
         /// Whether this object is deleted or not.
         /// </summary>
         [JsonProperty("deleted", NullValueHandling = NullValueHandling.Ignore)]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+        [STJS.JsonIgnore(Condition = STJS.JsonIgnoreCondition.WhenWritingNull)]
+#endif
         public bool? Deleted { get; set; }
 
         /// <summary>
@@ -155,6 +215,9 @@ public Customer Customer
         /// whether two bank accounts are the same.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
@@ -164,12 +227,18 @@ public Customer Customer
         /// and by when.
         /// </summary>
         [JsonProperty("future_requirements")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("future_requirements")]
+#endif
         public BankAccountFutureRequirements FutureRequirements { get; set; }
 
         /// <summary>
         /// The last four digits of the bank account number.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
@@ -178,6 +247,9 @@ public Customer Customer
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -185,12 +257,18 @@ public Customer Customer
         /// needs to be collected.
         /// </summary>
         [JsonProperty("requirements")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requirements")]
+#endif
         public BankAccountRequirements Requirements { get; set; }
 
         /// <summary>
         /// The routing transit number for the bank account.
         /// </summary>
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
 
         /// <summary>
@@ -216,6 +294,9 @@ public Customer Customer
         /// payouts. This means the other statuses don't apply.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BankAccounts/BankAccountFutureRequirements.cs b/src/Stripe.net/Entities/BankAccounts/BankAccountFutureRequirements.cs
index 999f6e04c3..38eae8556d 100644
--- a/src/Stripe.net/Entities/BankAccounts/BankAccountFutureRequirements.cs
+++ b/src/Stripe.net/Entities/BankAccounts/BankAccountFutureRequirements.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class BankAccountFutureRequirements : StripeEntity<BankAccountFutureRequirements>
     {
@@ -12,6 +15,9 @@ public class BankAccountFutureRequirements : StripeEntity<BankAccountFutureRequi
         /// account is disabled.
         /// </summary>
         [JsonProperty("currently_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currently_due")]
+#endif
         public List<string> CurrentlyDue { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class BankAccountFutureRequirements : StripeEntity<BankAccountFutureRequi
         /// or verification failed.
         /// </summary>
         [JsonProperty("errors")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("errors")]
+#endif
         public List<BankAccountFutureRequirementsError> Errors { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class BankAccountFutureRequirements : StripeEntity<BankAccountFutureRequi
         /// collected to enable the external account.
         /// </summary>
         [JsonProperty("past_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("past_due")]
+#endif
         public List<string> PastDue { get; set; }
 
         /// <summary>
@@ -37,6 +49,9 @@ public class BankAccountFutureRequirements : StripeEntity<BankAccountFutureRequi
         /// verification is still pending.
         /// </summary>
         [JsonProperty("pending_verification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pending_verification")]
+#endif
         public List<string> PendingVerification { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BankAccounts/BankAccountFutureRequirementsError.cs b/src/Stripe.net/Entities/BankAccounts/BankAccountFutureRequirementsError.cs
index 687e218961..233075bd4f 100644
--- a/src/Stripe.net/Entities/BankAccounts/BankAccountFutureRequirementsError.cs
+++ b/src/Stripe.net/Entities/BankAccounts/BankAccountFutureRequirementsError.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class BankAccountFutureRequirementsError : StripeEntity<BankAccountFutureRequirementsError>
     {
@@ -69,6 +72,9 @@ public class BankAccountFutureRequirementsError : StripeEntity<BankAccountFuture
         /// <c>verification_supportability</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
@@ -76,6 +82,9 @@ public class BankAccountFutureRequirementsError : StripeEntity<BankAccountFuture
         /// about the error.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
 
         /// <summary>
@@ -83,6 +92,9 @@ public class BankAccountFutureRequirementsError : StripeEntity<BankAccountFuture
         /// be resolved.
         /// </summary>
         [JsonProperty("requirement")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requirement")]
+#endif
         public string Requirement { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BankAccounts/BankAccountRequirements.cs b/src/Stripe.net/Entities/BankAccounts/BankAccountRequirements.cs
index 47384f5687..4399b335fa 100644
--- a/src/Stripe.net/Entities/BankAccounts/BankAccountRequirements.cs
+++ b/src/Stripe.net/Entities/BankAccounts/BankAccountRequirements.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class BankAccountRequirements : StripeEntity<BankAccountRequirements>
     {
@@ -12,6 +15,9 @@ public class BankAccountRequirements : StripeEntity<BankAccountRequirements>
         /// account is disabled.
         /// </summary>
         [JsonProperty("currently_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currently_due")]
+#endif
         public List<string> CurrentlyDue { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class BankAccountRequirements : StripeEntity<BankAccountRequirements>
         /// or verification failed.
         /// </summary>
         [JsonProperty("errors")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("errors")]
+#endif
         public List<BankAccountRequirementsError> Errors { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class BankAccountRequirements : StripeEntity<BankAccountRequirements>
         /// collected to enable the external account.
         /// </summary>
         [JsonProperty("past_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("past_due")]
+#endif
         public List<string> PastDue { get; set; }
 
         /// <summary>
@@ -37,6 +49,9 @@ public class BankAccountRequirements : StripeEntity<BankAccountRequirements>
         /// verification is still pending.
         /// </summary>
         [JsonProperty("pending_verification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pending_verification")]
+#endif
         public List<string> PendingVerification { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BankAccounts/BankAccountRequirementsError.cs b/src/Stripe.net/Entities/BankAccounts/BankAccountRequirementsError.cs
index 309cd0ba65..a51381f28f 100644
--- a/src/Stripe.net/Entities/BankAccounts/BankAccountRequirementsError.cs
+++ b/src/Stripe.net/Entities/BankAccounts/BankAccountRequirementsError.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class BankAccountRequirementsError : StripeEntity<BankAccountRequirementsError>
     {
@@ -69,6 +72,9 @@ public class BankAccountRequirementsError : StripeEntity<BankAccountRequirements
         /// <c>verification_supportability</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
@@ -76,6 +82,9 @@ public class BankAccountRequirementsError : StripeEntity<BankAccountRequirements
         /// about the error.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
 
         /// <summary>
@@ -83,6 +92,9 @@ public class BankAccountRequirementsError : StripeEntity<BankAccountRequirements
         /// be resolved.
         /// </summary>
         [JsonProperty("requirement")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requirement")]
+#endif
         public string Requirement { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/AlertTriggereds/AlertTriggered.cs b/src/Stripe.net/Entities/Billing/AlertTriggereds/AlertTriggered.cs
index a9b8c5ad93..7ff0b6e94f 100644
--- a/src/Stripe.net/Entities/Billing/AlertTriggereds/AlertTriggered.cs
+++ b/src/Stripe.net/Entities/Billing/AlertTriggereds/AlertTriggered.cs
@@ -4,6 +4,9 @@ namespace Stripe.Billing
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AlertTriggered : StripeEntity<AlertTriggered>, IHasObject
     {
@@ -11,6 +14,9 @@ public class AlertTriggered : StripeEntity<AlertTriggered>, IHasObject
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class AlertTriggered : StripeEntity<AlertTriggered>, IHasObject
         /// certain user made 100 API requests.
         /// </summary>
         [JsonProperty("alert")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alert")]
+#endif
         public Alert Alert { get; set; }
 
         /// <summary>
@@ -26,12 +35,19 @@ public class AlertTriggered : StripeEntity<AlertTriggered>, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// ID of customer for which the alert triggered.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
@@ -39,12 +55,18 @@ public class AlertTriggered : StripeEntity<AlertTriggered>, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
         /// The value triggering the alert.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public long Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/Alerts/Alert.cs b/src/Stripe.net/Entities/Billing/Alerts/Alert.cs
index 3213e8dd00..79dfe66d02 100644
--- a/src/Stripe.net/Entities/Billing/Alerts/Alert.cs
+++ b/src/Stripe.net/Entities/Billing/Alerts/Alert.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A billing alert is a resource that notifies you when a certain usage threshold on a
@@ -14,18 +17,27 @@ public class Alert : StripeEntity<Alert>, IHasId, IHasObject
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Defines the type of the alert.
         /// </summary>
         [JsonProperty("alert_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alert_type")]
+#endif
         public string AlertType { get; set; }
 
         /// <summary>
@@ -33,6 +45,9 @@ public class Alert : StripeEntity<Alert>, IHasId, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -40,12 +55,18 @@ public class Alert : StripeEntity<Alert>, IHasId, IHasObject
         /// One of: <c>active</c>, <c>archived</c>, or <c>inactive</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
         /// Title of the alert.
         /// </summary>
         [JsonProperty("title")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("title")]
+#endif
         public string Title { get; set; }
 
         /// <summary>
@@ -53,6 +74,9 @@ public class Alert : StripeEntity<Alert>, IHasId, IHasObject
         /// href="https://stripe.com/docs/api/billing/meter">Billing Meter</a>.
         /// </summary>
         [JsonProperty("usage_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("usage_threshold")]
+#endif
         public AlertUsageThreshold UsageThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/Alerts/AlertUsageThreshold.cs b/src/Stripe.net/Entities/Billing/Alerts/AlertUsageThreshold.cs
index 46f6ba9d80..9096360f48 100644
--- a/src/Stripe.net/Entities/Billing/Alerts/AlertUsageThreshold.cs
+++ b/src/Stripe.net/Entities/Billing/Alerts/AlertUsageThreshold.cs
@@ -4,7 +4,13 @@ namespace Stripe.Billing
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class AlertUsageThreshold : StripeEntity<AlertUsageThreshold>
     {
         /// <summary>
@@ -12,12 +18,18 @@ public class AlertUsageThreshold : StripeEntity<AlertUsageThreshold>
         /// filter at this time.
         /// </summary>
         [JsonProperty("filters")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("filters")]
+#endif
         public List<AlertUsageThresholdFilter> Filters { get; set; }
 
         /// <summary>
         /// The value at which this alert will trigger.
         /// </summary>
         [JsonProperty("gte")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gte")]
+#endif
         public long Gte { get; set; }
 
         #region Expandable Meter
@@ -28,6 +40,9 @@ public class AlertUsageThreshold : StripeEntity<AlertUsageThreshold>
         /// monitored.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string MeterId
         {
             get => this.InternalMeter?.Id;
@@ -42,6 +57,9 @@ public string MeterId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Meter Meter
         {
             get => this.InternalMeter?.ExpandedObject;
@@ -50,6 +68,10 @@ public Meter Meter
 
         [JsonProperty("meter")]
         [JsonConverter(typeof(ExpandableFieldConverter<Meter>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("meter")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Meter>))]
+#endif
         internal ExpandableField<Meter> InternalMeter { get; set; }
         #endregion
 
@@ -57,6 +79,9 @@ public Meter Meter
         /// Defines how the alert will behave.
         /// </summary>
         [JsonProperty("recurrence")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("recurrence")]
+#endif
         public string Recurrence { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/Alerts/AlertUsageThresholdFilter.cs b/src/Stripe.net/Entities/Billing/Alerts/AlertUsageThresholdFilter.cs
index 32ddff964b..9128ddd109 100644
--- a/src/Stripe.net/Entities/Billing/Alerts/AlertUsageThresholdFilter.cs
+++ b/src/Stripe.net/Entities/Billing/Alerts/AlertUsageThresholdFilter.cs
@@ -3,7 +3,13 @@ namespace Stripe.Billing
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class AlertUsageThresholdFilter : StripeEntity<AlertUsageThresholdFilter>
     {
         #region Expandable Customer
@@ -13,6 +19,9 @@ public class AlertUsageThresholdFilter : StripeEntity<AlertUsageThresholdFilter>
         /// Limit the scope of the alert to this customer ID.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerId
         {
             get => this.InternalCustomer?.Id;
@@ -26,6 +35,9 @@ public string CustomerId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Customer Customer
         {
             get => this.InternalCustomer?.ExpandedObject;
@@ -34,10 +46,17 @@ public Customer Customer
 
         [JsonProperty("customer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Customer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Customer>))]
+#endif
         internal ExpandableField<Customer> InternalCustomer { get; set; }
         #endregion
 
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/CreditBalanceSummaries/CreditBalanceSummary.cs b/src/Stripe.net/Entities/Billing/CreditBalanceSummaries/CreditBalanceSummary.cs
index 7974c02bdc..b9a636aba1 100644
--- a/src/Stripe.net/Entities/Billing/CreditBalanceSummaries/CreditBalanceSummary.cs
+++ b/src/Stripe.net/Entities/Billing/CreditBalanceSummaries/CreditBalanceSummary.cs
@@ -4,16 +4,25 @@ namespace Stripe.Billing
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Indicates the billing credit balance for billing credits granted to a customer.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class CreditBalanceSummary : StripeEntity<CreditBalanceSummary>, IHasObject
     {
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -21,6 +30,9 @@ public class CreditBalanceSummary : StripeEntity<CreditBalanceSummary>, IHasObje
         /// credit grants in a single currency, then this will have a single balance entry.
         /// </summary>
         [JsonProperty("balances")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("balances")]
+#endif
         public List<CreditBalanceSummaryBalance> Balances { get; set; }
 
         #region Expandable Customer
@@ -30,6 +42,9 @@ public class CreditBalanceSummary : StripeEntity<CreditBalanceSummary>, IHasObje
         /// The customer the balance is for.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerId
         {
             get => this.InternalCustomer?.Id;
@@ -43,6 +58,9 @@ public string CustomerId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Customer Customer
         {
             get => this.InternalCustomer?.ExpandedObject;
@@ -51,6 +69,10 @@ public Customer Customer
 
         [JsonProperty("customer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Customer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Customer>))]
+#endif
         internal ExpandableField<Customer> InternalCustomer { get; set; }
         #endregion
 
@@ -59,6 +81,9 @@ public Customer Customer
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/CreditBalanceSummaries/CreditBalanceSummaryBalance.cs b/src/Stripe.net/Entities/Billing/CreditBalanceSummaries/CreditBalanceSummaryBalance.cs
index dcad4f1789..0439c3e8a8 100644
--- a/src/Stripe.net/Entities/Billing/CreditBalanceSummaries/CreditBalanceSummaryBalance.cs
+++ b/src/Stripe.net/Entities/Billing/CreditBalanceSummaries/CreditBalanceSummaryBalance.cs
@@ -2,13 +2,22 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditBalanceSummaryBalance : StripeEntity<CreditBalanceSummaryBalance>
     {
         [JsonProperty("available_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available_balance")]
+#endif
         public CreditBalanceSummaryBalanceAvailableBalance AvailableBalance { get; set; }
 
         [JsonProperty("ledger_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ledger_balance")]
+#endif
         public CreditBalanceSummaryBalanceLedgerBalance LedgerBalance { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/CreditBalanceSummaries/CreditBalanceSummaryBalanceAvailableBalance.cs b/src/Stripe.net/Entities/Billing/CreditBalanceSummaries/CreditBalanceSummaryBalanceAvailableBalance.cs
index 6250acfeef..7f0f649cae 100644
--- a/src/Stripe.net/Entities/Billing/CreditBalanceSummaries/CreditBalanceSummaryBalanceAvailableBalance.cs
+++ b/src/Stripe.net/Entities/Billing/CreditBalanceSummaries/CreditBalanceSummaryBalanceAvailableBalance.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditBalanceSummaryBalanceAvailableBalance : StripeEntity<CreditBalanceSummaryBalanceAvailableBalance>
     {
@@ -9,12 +12,18 @@ public class CreditBalanceSummaryBalanceAvailableBalance : StripeEntity<CreditBa
         /// The monetary amount.
         /// </summary>
         [JsonProperty("monetary")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("monetary")]
+#endif
         public CreditBalanceSummaryBalanceAvailableBalanceMonetary Monetary { get; set; }
 
         /// <summary>
         /// The type of this amount. We currently only support <c>monetary</c> billing credits.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/CreditBalanceSummaries/CreditBalanceSummaryBalanceAvailableBalanceMonetary.cs b/src/Stripe.net/Entities/Billing/CreditBalanceSummaries/CreditBalanceSummaryBalanceAvailableBalanceMonetary.cs
index af529f85d7..16a895e44b 100644
--- a/src/Stripe.net/Entities/Billing/CreditBalanceSummaries/CreditBalanceSummaryBalanceAvailableBalanceMonetary.cs
+++ b/src/Stripe.net/Entities/Billing/CreditBalanceSummaries/CreditBalanceSummaryBalanceAvailableBalanceMonetary.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditBalanceSummaryBalanceAvailableBalanceMonetary : StripeEntity<CreditBalanceSummaryBalanceAvailableBalanceMonetary>
     {
@@ -11,12 +14,18 @@ public class CreditBalanceSummaryBalanceAvailableBalanceMonetary : StripeEntity<
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// A positive integer representing the amount.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public long Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/CreditBalanceSummaries/CreditBalanceSummaryBalanceLedgerBalance.cs b/src/Stripe.net/Entities/Billing/CreditBalanceSummaries/CreditBalanceSummaryBalanceLedgerBalance.cs
index 1f26b3e703..43f7cc4251 100644
--- a/src/Stripe.net/Entities/Billing/CreditBalanceSummaries/CreditBalanceSummaryBalanceLedgerBalance.cs
+++ b/src/Stripe.net/Entities/Billing/CreditBalanceSummaries/CreditBalanceSummaryBalanceLedgerBalance.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditBalanceSummaryBalanceLedgerBalance : StripeEntity<CreditBalanceSummaryBalanceLedgerBalance>
     {
@@ -9,12 +12,18 @@ public class CreditBalanceSummaryBalanceLedgerBalance : StripeEntity<CreditBalan
         /// The monetary amount.
         /// </summary>
         [JsonProperty("monetary")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("monetary")]
+#endif
         public CreditBalanceSummaryBalanceLedgerBalanceMonetary Monetary { get; set; }
 
         /// <summary>
         /// The type of this amount. We currently only support <c>monetary</c> billing credits.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/CreditBalanceSummaries/CreditBalanceSummaryBalanceLedgerBalanceMonetary.cs b/src/Stripe.net/Entities/Billing/CreditBalanceSummaries/CreditBalanceSummaryBalanceLedgerBalanceMonetary.cs
index 8d3698a52e..5ef1c3319e 100644
--- a/src/Stripe.net/Entities/Billing/CreditBalanceSummaries/CreditBalanceSummaryBalanceLedgerBalanceMonetary.cs
+++ b/src/Stripe.net/Entities/Billing/CreditBalanceSummaries/CreditBalanceSummaryBalanceLedgerBalanceMonetary.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditBalanceSummaryBalanceLedgerBalanceMonetary : StripeEntity<CreditBalanceSummaryBalanceLedgerBalanceMonetary>
     {
@@ -11,12 +14,18 @@ public class CreditBalanceSummaryBalanceLedgerBalanceMonetary : StripeEntity<Cre
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// A positive integer representing the amount.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public long Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransaction.cs b/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransaction.cs
index 68fd6bc1fe..ff02b09ee3 100644
--- a/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransaction.cs
+++ b/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransaction.cs
@@ -4,23 +4,35 @@ namespace Stripe.Billing
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A credit balance transaction is a resource representing a transaction (either a credit
     /// or a debit) against an existing credit grant.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class CreditBalanceTransaction : StripeEntity<CreditBalanceTransaction>, IHasId, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -28,6 +40,10 @@ public class CreditBalanceTransaction : StripeEntity<CreditBalanceTransaction>,
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -35,6 +51,9 @@ public class CreditBalanceTransaction : StripeEntity<CreditBalanceTransaction>,
         /// <c>credit</c>.
         /// </summary>
         [JsonProperty("credit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("credit")]
+#endif
         public CreditBalanceTransactionCredit Credit { get; set; }
 
         #region Expandable CreditGrant
@@ -44,6 +63,9 @@ public class CreditBalanceTransaction : StripeEntity<CreditBalanceTransaction>,
         /// The credit grant associated with this credit balance transaction.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CreditGrantId
         {
             get => this.InternalCreditGrant?.Id;
@@ -57,6 +79,9 @@ public string CreditGrantId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public CreditGrant CreditGrant
         {
             get => this.InternalCreditGrant?.ExpandedObject;
@@ -65,6 +90,10 @@ public CreditGrant CreditGrant
 
         [JsonProperty("credit_grant")]
         [JsonConverter(typeof(ExpandableFieldConverter<CreditGrant>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("credit_grant")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<CreditGrant>))]
+#endif
         internal ExpandableField<CreditGrant> InternalCreditGrant { get; set; }
         #endregion
 
@@ -72,6 +101,9 @@ public CreditGrant CreditGrant
         /// Debit details for this credit balance transaction. Only present if type is <c>debit</c>.
         /// </summary>
         [JsonProperty("debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("debit")]
+#endif
         public CreditBalanceTransactionDebit Debit { get; set; }
 
         /// <summary>
@@ -79,6 +111,10 @@ public CreditGrant CreditGrant
         /// </summary>
         [JsonProperty("effective_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("effective_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime EffectiveAt { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -86,6 +122,9 @@ public CreditGrant CreditGrant
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         #region Expandable TestClock
@@ -95,6 +134,9 @@ public CreditGrant CreditGrant
         /// ID of the test clock this credit balance transaction belongs to.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string TestClockId
         {
             get => this.InternalTestClock?.Id;
@@ -108,6 +150,9 @@ public string TestClockId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public TestHelpers.TestClock TestClock
         {
             get => this.InternalTestClock?.ExpandedObject;
@@ -116,6 +161,10 @@ public TestHelpers.TestClock TestClock
 
         [JsonProperty("test_clock")]
         [JsonConverter(typeof(ExpandableFieldConverter<TestHelpers.TestClock>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("test_clock")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<TestHelpers.TestClock>))]
+#endif
         internal ExpandableField<TestHelpers.TestClock> InternalTestClock { get; set; }
         #endregion
 
@@ -124,6 +173,9 @@ public TestHelpers.TestClock TestClock
         /// One of: <c>credit</c>, or <c>debit</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionCredit.cs b/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionCredit.cs
index 4aa56aa94f..8cb3929e07 100644
--- a/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionCredit.cs
+++ b/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionCredit.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditBalanceTransactionCredit : StripeEntity<CreditBalanceTransactionCredit>
     {
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public CreditBalanceTransactionCreditAmount Amount { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class CreditBalanceTransactionCredit : StripeEntity<CreditBalanceTransact
         /// present if <c>type</c> is <c>credits_application_invoice_voided</c>.
         /// </summary>
         [JsonProperty("credits_application_invoice_voided")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("credits_application_invoice_voided")]
+#endif
         public CreditBalanceTransactionCreditCreditsApplicationInvoiceVoided CreditsApplicationInvoiceVoided { get; set; }
 
         /// <summary>
@@ -20,6 +29,9 @@ public class CreditBalanceTransactionCredit : StripeEntity<CreditBalanceTransact
         /// One of: <c>credits_application_invoice_voided</c>, or <c>credits_granted</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionCreditAmount.cs b/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionCreditAmount.cs
index bee09c36b2..536890028b 100644
--- a/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionCreditAmount.cs
+++ b/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionCreditAmount.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditBalanceTransactionCreditAmount : StripeEntity<CreditBalanceTransactionCreditAmount>
     {
@@ -9,12 +12,18 @@ public class CreditBalanceTransactionCreditAmount : StripeEntity<CreditBalanceTr
         /// The monetary amount.
         /// </summary>
         [JsonProperty("monetary")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("monetary")]
+#endif
         public CreditBalanceTransactionCreditAmountMonetary Monetary { get; set; }
 
         /// <summary>
         /// The type of this amount. We currently only support <c>monetary</c> billing credits.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionCreditAmountMonetary.cs b/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionCreditAmountMonetary.cs
index d9e4e74dd3..0b11ac350a 100644
--- a/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionCreditAmountMonetary.cs
+++ b/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionCreditAmountMonetary.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditBalanceTransactionCreditAmountMonetary : StripeEntity<CreditBalanceTransactionCreditAmountMonetary>
     {
@@ -11,12 +14,18 @@ public class CreditBalanceTransactionCreditAmountMonetary : StripeEntity<CreditB
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// A positive integer representing the amount.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public long Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionCreditCreditsApplicationInvoiceVoided.cs b/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionCreditCreditsApplicationInvoiceVoided.cs
index a0c327124a..76adae0128 100644
--- a/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionCreditCreditsApplicationInvoiceVoided.cs
+++ b/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionCreditCreditsApplicationInvoiceVoided.cs
@@ -3,7 +3,13 @@ namespace Stripe.Billing
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class CreditBalanceTransactionCreditCreditsApplicationInvoiceVoided : StripeEntity<CreditBalanceTransactionCreditCreditsApplicationInvoiceVoided>
     {
         #region Expandable Invoice
@@ -13,6 +19,9 @@ public class CreditBalanceTransactionCreditCreditsApplicationInvoiceVoided : Str
         /// The invoice to which the reinstated billing credits were originally applied.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string InvoiceId
         {
             get => this.InternalInvoice?.Id;
@@ -26,6 +35,9 @@ public string InvoiceId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Invoice Invoice
         {
             get => this.InternalInvoice?.ExpandedObject;
@@ -34,6 +46,10 @@ public Invoice Invoice
 
         [JsonProperty("invoice")]
         [JsonConverter(typeof(ExpandableFieldConverter<Invoice>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Invoice>))]
+#endif
         internal ExpandableField<Invoice> InternalInvoice { get; set; }
         #endregion
 
@@ -41,6 +57,9 @@ public Invoice Invoice
         /// The invoice line item to which the reinstated billing credits were originally applied.
         /// </summary>
         [JsonProperty("invoice_line_item")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_line_item")]
+#endif
         public string InvoiceLineItem { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionDebit.cs b/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionDebit.cs
index 61d2167103..4af677b20d 100644
--- a/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionDebit.cs
+++ b/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionDebit.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditBalanceTransactionDebit : StripeEntity<CreditBalanceTransactionDebit>
     {
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public CreditBalanceTransactionDebitAmount Amount { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class CreditBalanceTransactionDebit : StripeEntity<CreditBalanceTransacti
         /// <c>type</c> is <c>credits_applied</c>.
         /// </summary>
         [JsonProperty("credits_applied")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("credits_applied")]
+#endif
         public CreditBalanceTransactionDebitCreditsApplied CreditsApplied { get; set; }
 
         /// <summary>
@@ -20,6 +29,9 @@ public class CreditBalanceTransactionDebit : StripeEntity<CreditBalanceTransacti
         /// One of: <c>credits_applied</c>, <c>credits_expired</c>, or <c>credits_voided</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionDebitAmount.cs b/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionDebitAmount.cs
index 781147480d..65f3c3a886 100644
--- a/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionDebitAmount.cs
+++ b/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionDebitAmount.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditBalanceTransactionDebitAmount : StripeEntity<CreditBalanceTransactionDebitAmount>
     {
@@ -9,12 +12,18 @@ public class CreditBalanceTransactionDebitAmount : StripeEntity<CreditBalanceTra
         /// The monetary amount.
         /// </summary>
         [JsonProperty("monetary")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("monetary")]
+#endif
         public CreditBalanceTransactionDebitAmountMonetary Monetary { get; set; }
 
         /// <summary>
         /// The type of this amount. We currently only support <c>monetary</c> billing credits.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionDebitAmountMonetary.cs b/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionDebitAmountMonetary.cs
index 3cefd89802..26f99ded9d 100644
--- a/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionDebitAmountMonetary.cs
+++ b/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionDebitAmountMonetary.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditBalanceTransactionDebitAmountMonetary : StripeEntity<CreditBalanceTransactionDebitAmountMonetary>
     {
@@ -11,12 +14,18 @@ public class CreditBalanceTransactionDebitAmountMonetary : StripeEntity<CreditBa
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// A positive integer representing the amount.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public long Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionDebitCreditsApplied.cs b/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionDebitCreditsApplied.cs
index 1e6fa25a5e..16ae884912 100644
--- a/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionDebitCreditsApplied.cs
+++ b/src/Stripe.net/Entities/Billing/CreditBalanceTransactions/CreditBalanceTransactionDebitCreditsApplied.cs
@@ -3,7 +3,13 @@ namespace Stripe.Billing
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class CreditBalanceTransactionDebitCreditsApplied : StripeEntity<CreditBalanceTransactionDebitCreditsApplied>
     {
         #region Expandable Invoice
@@ -13,6 +19,9 @@ public class CreditBalanceTransactionDebitCreditsApplied : StripeEntity<CreditBa
         /// The invoice to which the billing credits were applied.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string InvoiceId
         {
             get => this.InternalInvoice?.Id;
@@ -26,6 +35,9 @@ public string InvoiceId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Invoice Invoice
         {
             get => this.InternalInvoice?.ExpandedObject;
@@ -34,6 +46,10 @@ public Invoice Invoice
 
         [JsonProperty("invoice")]
         [JsonConverter(typeof(ExpandableFieldConverter<Invoice>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Invoice>))]
+#endif
         internal ExpandableField<Invoice> InternalInvoice { get; set; }
         #endregion
 
@@ -41,6 +57,9 @@ public Invoice Invoice
         /// The invoice line item to which the billing credits were applied.
         /// </summary>
         [JsonProperty("invoice_line_item")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_line_item")]
+#endif
         public string InvoiceLineItem { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/CreditGrants/CreditGrant.cs b/src/Stripe.net/Entities/Billing/CreditGrants/CreditGrant.cs
index ff4500875f..1b95837bad 100644
--- a/src/Stripe.net/Entities/Billing/CreditGrants/CreditGrant.cs
+++ b/src/Stripe.net/Entities/Billing/CreditGrants/CreditGrant.cs
@@ -5,6 +5,9 @@ namespace Stripe.Billing
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A credit grant is an API resource that documents the allocation of some billing credits
@@ -14,24 +17,39 @@ namespace Stripe.Billing
     /// href="https://docs.stripe.com/billing/subscriptions/usage-based/billing-credits">Billing
     /// credits</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class CreditGrant : StripeEntity<CreditGrant>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public CreditGrantAmount Amount { get; set; }
 
         [JsonProperty("applicability_config")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("applicability_config")]
+#endif
         public CreditGrantApplicabilityConfig ApplicabilityConfig { get; set; }
 
         /// <summary>
@@ -40,6 +58,9 @@ public class CreditGrant : StripeEntity<CreditGrant>, IHasId, IHasMetadata, IHas
         /// One of: <c>paid</c>, or <c>promotional</c>.
         /// </summary>
         [JsonProperty("category")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("category")]
+#endif
         public string Category { get; set; }
 
         /// <summary>
@@ -47,6 +68,10 @@ public class CreditGrant : StripeEntity<CreditGrant>, IHasId, IHasMetadata, IHas
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         #region Expandable Customer
@@ -56,6 +81,9 @@ public class CreditGrant : StripeEntity<CreditGrant>, IHasId, IHasMetadata, IHas
         /// ID of the customer receiving the billing credits.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerId
         {
             get => this.InternalCustomer?.Id;
@@ -69,6 +97,9 @@ public string CustomerId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Customer Customer
         {
             get => this.InternalCustomer?.ExpandedObject;
@@ -77,6 +108,10 @@ public Customer Customer
 
         [JsonProperty("customer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Customer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Customer>))]
+#endif
         internal ExpandableField<Customer> InternalCustomer { get; set; }
         #endregion
 
@@ -85,6 +120,10 @@ public Customer Customer
         /// </summary>
         [JsonProperty("effective_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("effective_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? EffectiveAt { get; set; }
 
         /// <summary>
@@ -93,6 +132,10 @@ public Customer Customer
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpiresAt { get; set; }
 
         /// <summary>
@@ -100,6 +143,9 @@ public Customer Customer
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -108,12 +154,18 @@ public Customer Customer
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// A descriptive name shown in dashboard.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -121,6 +173,9 @@ public Customer Customer
         /// 100.
         /// </summary>
         [JsonProperty("priority")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("priority")]
+#endif
         public long? Priority { get; set; }
 
         #region Expandable TestClock
@@ -130,6 +185,9 @@ public Customer Customer
         /// ID of the test clock this credit grant belongs to.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string TestClockId
         {
             get => this.InternalTestClock?.Id;
@@ -143,6 +201,9 @@ public string TestClockId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public TestHelpers.TestClock TestClock
         {
             get => this.InternalTestClock?.ExpandedObject;
@@ -151,6 +212,10 @@ public TestHelpers.TestClock TestClock
 
         [JsonProperty("test_clock")]
         [JsonConverter(typeof(ExpandableFieldConverter<TestHelpers.TestClock>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("test_clock")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<TestHelpers.TestClock>))]
+#endif
         internal ExpandableField<TestHelpers.TestClock> InternalTestClock { get; set; }
         #endregion
 
@@ -159,6 +224,10 @@ public TestHelpers.TestClock TestClock
         /// </summary>
         [JsonProperty("updated")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("updated")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Updated { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -167,6 +236,10 @@ public TestHelpers.TestClock TestClock
         /// </summary>
         [JsonProperty("voided_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("voided_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? VoidedAt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/CreditGrants/CreditGrantAmount.cs b/src/Stripe.net/Entities/Billing/CreditGrants/CreditGrantAmount.cs
index beedffd047..ec1a9110b1 100644
--- a/src/Stripe.net/Entities/Billing/CreditGrants/CreditGrantAmount.cs
+++ b/src/Stripe.net/Entities/Billing/CreditGrants/CreditGrantAmount.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditGrantAmount : StripeEntity<CreditGrantAmount>
     {
@@ -9,12 +12,18 @@ public class CreditGrantAmount : StripeEntity<CreditGrantAmount>
         /// The monetary amount.
         /// </summary>
         [JsonProperty("monetary")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("monetary")]
+#endif
         public CreditGrantAmountMonetary Monetary { get; set; }
 
         /// <summary>
         /// The type of this amount. We currently only support <c>monetary</c> billing credits.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/CreditGrants/CreditGrantAmountMonetary.cs b/src/Stripe.net/Entities/Billing/CreditGrants/CreditGrantAmountMonetary.cs
index 256410e7ba..6e9afe0883 100644
--- a/src/Stripe.net/Entities/Billing/CreditGrants/CreditGrantAmountMonetary.cs
+++ b/src/Stripe.net/Entities/Billing/CreditGrants/CreditGrantAmountMonetary.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditGrantAmountMonetary : StripeEntity<CreditGrantAmountMonetary>
     {
@@ -11,12 +14,18 @@ public class CreditGrantAmountMonetary : StripeEntity<CreditGrantAmountMonetary>
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// A positive integer representing the amount.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public long Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/CreditGrants/CreditGrantApplicabilityConfig.cs b/src/Stripe.net/Entities/Billing/CreditGrants/CreditGrantApplicabilityConfig.cs
index 1f68d4e058..8c9a809ca6 100644
--- a/src/Stripe.net/Entities/Billing/CreditGrants/CreditGrantApplicabilityConfig.cs
+++ b/src/Stripe.net/Entities/Billing/CreditGrants/CreditGrantApplicabilityConfig.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditGrantApplicabilityConfig : StripeEntity<CreditGrantApplicabilityConfig>
     {
         [JsonProperty("scope")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("scope")]
+#endif
         public CreditGrantApplicabilityConfigScope Scope { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/CreditGrants/CreditGrantApplicabilityConfigScope.cs b/src/Stripe.net/Entities/Billing/CreditGrants/CreditGrantApplicabilityConfigScope.cs
index 3cb2fd07d3..61fcbf3e60 100644
--- a/src/Stripe.net/Entities/Billing/CreditGrants/CreditGrantApplicabilityConfigScope.cs
+++ b/src/Stripe.net/Entities/Billing/CreditGrants/CreditGrantApplicabilityConfigScope.cs
@@ -3,6 +3,9 @@ namespace Stripe.Billing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditGrantApplicabilityConfigScope : StripeEntity<CreditGrantApplicabilityConfigScope>
     {
@@ -12,6 +15,9 @@ public class CreditGrantApplicabilityConfigScope : StripeEntity<CreditGrantAppli
         /// href="https://docs.stripe.com/api/billing/meter">Billing Meter</a> attached to them.
         /// </summary>
         [JsonProperty("price_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price_type")]
+#endif
         public string PriceType { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class CreditGrantApplicabilityConfigScope : StripeEntity<CreditGrantAppli
         /// href="https://docs.stripe.com/api/billing/meter">Billing Meter</a> attached to them.
         /// </summary>
         [JsonProperty("prices")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("prices")]
+#endif
         public List<CreditGrantApplicabilityConfigScopePrice> Prices { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/CreditGrants/CreditGrantApplicabilityConfigScopePrice.cs b/src/Stripe.net/Entities/Billing/CreditGrants/CreditGrantApplicabilityConfigScopePrice.cs
index d41b5b77cb..3620b111e4 100644
--- a/src/Stripe.net/Entities/Billing/CreditGrants/CreditGrantApplicabilityConfigScopePrice.cs
+++ b/src/Stripe.net/Entities/Billing/CreditGrants/CreditGrantApplicabilityConfigScopePrice.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditGrantApplicabilityConfigScopePrice : StripeEntity<CreditGrantApplicabilityConfigScopePrice>, IHasId
     {
@@ -9,6 +12,9 @@ public class CreditGrantApplicabilityConfigScopePrice : StripeEntity<CreditGrant
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/MeterEventAdjustments/MeterEventAdjustment.cs b/src/Stripe.net/Entities/Billing/MeterEventAdjustments/MeterEventAdjustment.cs
index 3fc47f2830..83c81ab004 100644
--- a/src/Stripe.net/Entities/Billing/MeterEventAdjustments/MeterEventAdjustment.cs
+++ b/src/Stripe.net/Entities/Billing/MeterEventAdjustments/MeterEventAdjustment.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A billing meter event adjustment is a resource that allows you to cancel a meter event.
@@ -14,18 +17,27 @@ public class MeterEventAdjustment : StripeEntity<MeterEventAdjustment>, IHasObje
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Specifies which event to cancel.
         /// </summary>
         [JsonProperty("cancel")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancel")]
+#endif
         public MeterEventAdjustmentCancel Cancel { get; set; }
 
         /// <summary>
         /// The name of the meter event. Corresponds with the <c>event_name</c> field on a meter.
         /// </summary>
         [JsonProperty("event_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("event_name")]
+#endif
         public string EventName { get; set; }
 
         /// <summary>
@@ -33,6 +45,9 @@ public class MeterEventAdjustment : StripeEntity<MeterEventAdjustment>, IHasObje
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -40,6 +55,9 @@ public class MeterEventAdjustment : StripeEntity<MeterEventAdjustment>, IHasObje
         /// One of: <c>complete</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -47,6 +65,9 @@ public class MeterEventAdjustment : StripeEntity<MeterEventAdjustment>, IHasObje
         /// period cancellation is not supported yet.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/MeterEventAdjustments/MeterEventAdjustmentCancel.cs b/src/Stripe.net/Entities/Billing/MeterEventAdjustments/MeterEventAdjustmentCancel.cs
index fb9af0ca83..e971f43cdd 100644
--- a/src/Stripe.net/Entities/Billing/MeterEventAdjustments/MeterEventAdjustmentCancel.cs
+++ b/src/Stripe.net/Entities/Billing/MeterEventAdjustments/MeterEventAdjustmentCancel.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MeterEventAdjustmentCancel : StripeEntity<MeterEventAdjustmentCancel>
     {
@@ -9,6 +12,9 @@ public class MeterEventAdjustmentCancel : StripeEntity<MeterEventAdjustmentCance
         /// Unique identifier for the event.
         /// </summary>
         [JsonProperty("identifier")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("identifier")]
+#endif
         public string Identifier { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/MeterEventSummaries/MeterEventSummary.cs b/src/Stripe.net/Entities/Billing/MeterEventSummaries/MeterEventSummary.cs
index 754483419a..13d0b818a5 100644
--- a/src/Stripe.net/Entities/Billing/MeterEventSummaries/MeterEventSummary.cs
+++ b/src/Stripe.net/Entities/Billing/MeterEventSummaries/MeterEventSummary.cs
@@ -4,6 +4,9 @@ namespace Stripe.Billing
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A billing meter event summary represents an aggregated view of a customer's billing
@@ -19,12 +22,18 @@ public class MeterEventSummary : StripeEntity<MeterEventSummary>, IHasId, IHasOb
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -33,6 +42,9 @@ public class MeterEventSummary : StripeEntity<MeterEventSummary>, IHasId, IHasOb
         /// <c>default_aggregation</c>.
         /// </summary>
         [JsonProperty("aggregated_value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("aggregated_value")]
+#endif
         public decimal AggregatedValue { get; set; }
 
         /// <summary>
@@ -41,6 +53,10 @@ public class MeterEventSummary : StripeEntity<MeterEventSummary>, IHasId, IHasOb
         /// </summary>
         [JsonProperty("end_time")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end_time")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime EndTime { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -48,12 +64,18 @@ public class MeterEventSummary : StripeEntity<MeterEventSummary>, IHasId, IHasOb
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
         /// The meter associated with this event summary.
         /// </summary>
         [JsonProperty("meter")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("meter")]
+#endif
         public string Meter { get; set; }
 
         /// <summary>
@@ -62,6 +84,10 @@ public class MeterEventSummary : StripeEntity<MeterEventSummary>, IHasId, IHasOb
         /// </summary>
         [JsonProperty("start_time")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("start_time")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime StartTime { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/MeterEvents/MeterEvent.cs b/src/Stripe.net/Entities/Billing/MeterEvents/MeterEvent.cs
index 1674224f23..b4ea7a80dd 100644
--- a/src/Stripe.net/Entities/Billing/MeterEvents/MeterEvent.cs
+++ b/src/Stripe.net/Entities/Billing/MeterEvents/MeterEvent.cs
@@ -5,6 +5,9 @@ namespace Stripe.Billing
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Meter events represent actions that customers take in your system. You can use meter
@@ -18,6 +21,9 @@ public class MeterEvent : StripeEntity<MeterEvent>, IHasObject
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -25,18 +31,28 @@ public class MeterEvent : StripeEntity<MeterEvent>, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// The name of the meter event. Corresponds with the <c>event_name</c> field on a meter.
         /// </summary>
         [JsonProperty("event_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("event_name")]
+#endif
         public string EventName { get; set; }
 
         /// <summary>
         /// A unique identifier for the event.
         /// </summary>
         [JsonProperty("identifier")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("identifier")]
+#endif
         public string Identifier { get; set; }
 
         /// <summary>
@@ -44,6 +60,9 @@ public class MeterEvent : StripeEntity<MeterEvent>, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -54,6 +73,9 @@ public class MeterEvent : StripeEntity<MeterEvent>, IHasObject
         /// href="https://stripe.com/docs/billing/subscriptions/usage-based/recording-usage#payload-key-overrides">payload</a>.
         /// </summary>
         [JsonProperty("payload")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payload")]
+#endif
         public Dictionary<string, string> Payload { get; set; }
 
         /// <summary>
@@ -62,6 +84,10 @@ public class MeterEvent : StripeEntity<MeterEvent>, IHasObject
         /// </summary>
         [JsonProperty("timestamp")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("timestamp")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Timestamp { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/Meters/Meter.cs b/src/Stripe.net/Entities/Billing/Meters/Meter.cs
index b7423b7a39..8d640b5319 100644
--- a/src/Stripe.net/Entities/Billing/Meters/Meter.cs
+++ b/src/Stripe.net/Entities/Billing/Meters/Meter.cs
@@ -4,6 +4,9 @@ namespace Stripe.Billing
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Meters specify how to aggregate meter events over a billing period. Meter events
@@ -19,12 +22,18 @@ public class Meter : StripeEntity<Meter>, IHasId, IHasObject
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -32,18 +41,31 @@ public class Meter : StripeEntity<Meter>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         [JsonProperty("customer_mapping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_mapping")]
+#endif
         public MeterCustomerMapping CustomerMapping { get; set; }
 
         [JsonProperty("default_aggregation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_aggregation")]
+#endif
         public MeterDefaultAggregation DefaultAggregation { get; set; }
 
         /// <summary>
         /// The meter's name.
         /// </summary>
         [JsonProperty("display_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_name")]
+#endif
         public string DisplayName { get; set; }
 
         /// <summary>
@@ -51,6 +73,9 @@ public class Meter : StripeEntity<Meter>, IHasId, IHasObject
         /// field on meter events.
         /// </summary>
         [JsonProperty("event_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("event_name")]
+#endif
         public string EventName { get; set; }
 
         /// <summary>
@@ -58,6 +83,9 @@ public class Meter : StripeEntity<Meter>, IHasId, IHasObject
         /// One of: <c>day</c>, or <c>hour</c>.
         /// </summary>
         [JsonProperty("event_time_window")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("event_time_window")]
+#endif
         public string EventTimeWindow { get; set; }
 
         /// <summary>
@@ -65,6 +93,9 @@ public class Meter : StripeEntity<Meter>, IHasId, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -72,9 +103,15 @@ public class Meter : StripeEntity<Meter>, IHasId, IHasObject
         /// One of: <c>active</c>, or <c>inactive</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         [JsonProperty("status_transitions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_transitions")]
+#endif
         public MeterStatusTransitions StatusTransitions { get; set; }
 
         /// <summary>
@@ -82,9 +119,16 @@ public class Meter : StripeEntity<Meter>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("updated")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("updated")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Updated { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         [JsonProperty("value_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value_settings")]
+#endif
         public MeterValueSettings ValueSettings { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/Meters/MeterCustomerMapping.cs b/src/Stripe.net/Entities/Billing/Meters/MeterCustomerMapping.cs
index 511407d1b1..2cccbd1fbc 100644
--- a/src/Stripe.net/Entities/Billing/Meters/MeterCustomerMapping.cs
+++ b/src/Stripe.net/Entities/Billing/Meters/MeterCustomerMapping.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MeterCustomerMapping : StripeEntity<MeterCustomerMapping>
     {
@@ -9,12 +12,18 @@ public class MeterCustomerMapping : StripeEntity<MeterCustomerMapping>
         /// The key in the meter event payload to use for mapping the event to a customer.
         /// </summary>
         [JsonProperty("event_payload_key")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("event_payload_key")]
+#endif
         public string EventPayloadKey { get; set; }
 
         /// <summary>
         /// The method for mapping a meter event to a customer.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/Meters/MeterDefaultAggregation.cs b/src/Stripe.net/Entities/Billing/Meters/MeterDefaultAggregation.cs
index 23d47f2fef..7c16418e78 100644
--- a/src/Stripe.net/Entities/Billing/Meters/MeterDefaultAggregation.cs
+++ b/src/Stripe.net/Entities/Billing/Meters/MeterDefaultAggregation.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MeterDefaultAggregation : StripeEntity<MeterDefaultAggregation>
     {
@@ -10,6 +13,9 @@ public class MeterDefaultAggregation : StripeEntity<MeterDefaultAggregation>
         /// One of: <c>count</c>, or <c>sum</c>.
         /// </summary>
         [JsonProperty("formula")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("formula")]
+#endif
         public string Formula { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/Meters/MeterStatusTransitions.cs b/src/Stripe.net/Entities/Billing/Meters/MeterStatusTransitions.cs
index 2321104f84..96e097367c 100644
--- a/src/Stripe.net/Entities/Billing/Meters/MeterStatusTransitions.cs
+++ b/src/Stripe.net/Entities/Billing/Meters/MeterStatusTransitions.cs
@@ -4,6 +4,9 @@ namespace Stripe.Billing
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MeterStatusTransitions : StripeEntity<MeterStatusTransitions>
     {
@@ -12,6 +15,10 @@ public class MeterStatusTransitions : StripeEntity<MeterStatusTransitions>
         /// </summary>
         [JsonProperty("deactivated_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deactivated_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? DeactivatedAt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Billing/Meters/MeterValueSettings.cs b/src/Stripe.net/Entities/Billing/Meters/MeterValueSettings.cs
index d83ee54a11..06def3fd4c 100644
--- a/src/Stripe.net/Entities/Billing/Meters/MeterValueSettings.cs
+++ b/src/Stripe.net/Entities/Billing/Meters/MeterValueSettings.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MeterValueSettings : StripeEntity<MeterValueSettings>
     {
@@ -9,6 +12,9 @@ public class MeterValueSettings : StripeEntity<MeterValueSettings>
         /// The key in the meter event payload to use as the value for this meter.
         /// </summary>
         [JsonProperty("event_payload_key")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("event_payload_key")]
+#endif
         public string EventPayloadKey { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BillingPortal/Configurations/Configuration.cs b/src/Stripe.net/Entities/BillingPortal/Configurations/Configuration.cs
index 7d530a99da..11a75ce89e 100644
--- a/src/Stripe.net/Entities/BillingPortal/Configurations/Configuration.cs
+++ b/src/Stripe.net/Entities/BillingPortal/Configurations/Configuration.cs
@@ -5,28 +5,43 @@ namespace Stripe.BillingPortal
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A portal configuration describes the functionality and behavior of a portal session.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class Configuration : StripeEntity<Configuration>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Whether the configuration is active and can be used to create portal sessions.
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool Active { get; set; }
 
         #region Expandable Application
@@ -36,6 +51,9 @@ public class Configuration : StripeEntity<Configuration>, IHasId, IHasMetadata,
         /// ID of the Connect Application that created the configuration.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ApplicationId
         {
             get => this.InternalApplication?.Id;
@@ -49,6 +67,9 @@ public string ApplicationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Application Application
         {
             get => this.InternalApplication?.ExpandedObject;
@@ -57,10 +78,17 @@ public Application Application
 
         [JsonProperty("application")]
         [JsonConverter(typeof(ExpandableFieldConverter<Application>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Application>))]
+#endif
         internal ExpandableField<Application> InternalApplication { get; set; }
         #endregion
 
         [JsonProperty("business_profile")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("business_profile")]
+#endif
         public ConfigurationBusinessProfile BusinessProfile { get; set; }
 
         /// <summary>
@@ -68,6 +96,10 @@ public Application Application
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -77,9 +109,15 @@ public Application Application
         /// when creating the session.
         /// </summary>
         [JsonProperty("default_return_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_return_url")]
+#endif
         public string DefaultReturnUrl { get; set; }
 
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public ConfigurationFeatures Features { get; set; }
 
         /// <summary>
@@ -88,6 +126,9 @@ public Application Application
         /// overriden when creating the session.
         /// </summary>
         [JsonProperty("is_default")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("is_default")]
+#endif
         public bool IsDefault { get; set; }
 
         /// <summary>
@@ -95,9 +136,15 @@ public Application Application
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         [JsonProperty("login_page")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("login_page")]
+#endif
         public ConfigurationLoginPage LoginPage { get; set; }
 
         /// <summary>
@@ -106,6 +153,9 @@ public Application Application
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -113,6 +163,10 @@ public Application Application
         /// </summary>
         [JsonProperty("updated")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("updated")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Updated { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
     }
 }
diff --git a/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationBusinessProfile.cs b/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationBusinessProfile.cs
index 5095081ddf..05cbfdb8c7 100644
--- a/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationBusinessProfile.cs
+++ b/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationBusinessProfile.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationBusinessProfile : StripeEntity<ConfigurationBusinessProfile>
     {
@@ -9,18 +12,27 @@ public class ConfigurationBusinessProfile : StripeEntity<ConfigurationBusinessPr
         /// The messaging shown to customers in the portal.
         /// </summary>
         [JsonProperty("headline")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("headline")]
+#endif
         public string Headline { get; set; }
 
         /// <summary>
         /// A link to the business’s publicly available privacy policy.
         /// </summary>
         [JsonProperty("privacy_policy_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("privacy_policy_url")]
+#endif
         public string PrivacyPolicyUrl { get; set; }
 
         /// <summary>
         /// A link to the business’s publicly available terms of service.
         /// </summary>
         [JsonProperty("terms_of_service_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("terms_of_service_url")]
+#endif
         public string TermsOfServiceUrl { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeatures.cs b/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeatures.cs
index 8575b51a3f..fbd2a274f2 100644
--- a/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeatures.cs
+++ b/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeatures.cs
@@ -2,22 +2,40 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationFeatures : StripeEntity<ConfigurationFeatures>
     {
         [JsonProperty("customer_update")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_update")]
+#endif
         public ConfigurationFeaturesCustomerUpdate CustomerUpdate { get; set; }
 
         [JsonProperty("invoice_history")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_history")]
+#endif
         public ConfigurationFeaturesInvoiceHistory InvoiceHistory { get; set; }
 
         [JsonProperty("payment_method_update")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_update")]
+#endif
         public ConfigurationFeaturesPaymentMethodUpdate PaymentMethodUpdate { get; set; }
 
         [JsonProperty("subscription_cancel")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_cancel")]
+#endif
         public ConfigurationFeaturesSubscriptionCancel SubscriptionCancel { get; set; }
 
         [JsonProperty("subscription_update")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_update")]
+#endif
         public ConfigurationFeaturesSubscriptionUpdate SubscriptionUpdate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesCustomerUpdate.cs b/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesCustomerUpdate.cs
index a8a4b966dc..b33e3498c0 100644
--- a/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesCustomerUpdate.cs
+++ b/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesCustomerUpdate.cs
@@ -3,6 +3,9 @@ namespace Stripe.BillingPortal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationFeaturesCustomerUpdate : StripeEntity<ConfigurationFeaturesCustomerUpdate>
     {
@@ -13,12 +16,18 @@ public class ConfigurationFeaturesCustomerUpdate : StripeEntity<ConfigurationFea
         /// <c>tax_id</c>.
         /// </summary>
         [JsonProperty("allowed_updates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allowed_updates")]
+#endif
         public List<string> AllowedUpdates { get; set; }
 
         /// <summary>
         /// Whether the feature is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesInvoiceHistory.cs b/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesInvoiceHistory.cs
index 21fcaff9f2..cf67268f5a 100644
--- a/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesInvoiceHistory.cs
+++ b/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesInvoiceHistory.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationFeaturesInvoiceHistory : StripeEntity<ConfigurationFeaturesInvoiceHistory>
     {
@@ -9,6 +12,9 @@ public class ConfigurationFeaturesInvoiceHistory : StripeEntity<ConfigurationFea
         /// Whether the feature is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesPaymentMethodUpdate.cs b/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesPaymentMethodUpdate.cs
index 3c433cecfa..e0954104d7 100644
--- a/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesPaymentMethodUpdate.cs
+++ b/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesPaymentMethodUpdate.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationFeaturesPaymentMethodUpdate : StripeEntity<ConfigurationFeaturesPaymentMethodUpdate>
     {
@@ -9,6 +12,9 @@ public class ConfigurationFeaturesPaymentMethodUpdate : StripeEntity<Configurati
         /// Whether the feature is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionCancel.cs b/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionCancel.cs
index a0eb22545b..4bf9fd4a05 100644
--- a/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionCancel.cs
+++ b/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionCancel.cs
@@ -2,16 +2,25 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationFeaturesSubscriptionCancel : StripeEntity<ConfigurationFeaturesSubscriptionCancel>
     {
         [JsonProperty("cancellation_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancellation_reason")]
+#endif
         public ConfigurationFeaturesSubscriptionCancelCancellationReason CancellationReason { get; set; }
 
         /// <summary>
         /// Whether the feature is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         /// <summary>
@@ -19,6 +28,9 @@ public class ConfigurationFeaturesSubscriptionCancel : StripeEntity<Configuratio
         /// One of: <c>at_period_end</c>, or <c>immediately</c>.
         /// </summary>
         [JsonProperty("mode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mode")]
+#endif
         public string Mode { get; set; }
 
         /// <summary>
@@ -27,6 +39,9 @@ public class ConfigurationFeaturesSubscriptionCancel : StripeEntity<Configuratio
         /// One of: <c>always_invoice</c>, <c>create_prorations</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("proration_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("proration_behavior")]
+#endif
         public string ProrationBehavior { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionCancelCancellationReason.cs b/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionCancelCancellationReason.cs
index 8f84da92ba..ddf451934b 100644
--- a/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionCancelCancellationReason.cs
+++ b/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionCancelCancellationReason.cs
@@ -3,6 +3,9 @@ namespace Stripe.BillingPortal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationFeaturesSubscriptionCancelCancellationReason : StripeEntity<ConfigurationFeaturesSubscriptionCancelCancellationReason>
     {
@@ -10,6 +13,9 @@ public class ConfigurationFeaturesSubscriptionCancelCancellationReason : StripeE
         /// Whether the feature is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class ConfigurationFeaturesSubscriptionCancelCancellationReason : StripeE
         /// <c>unused</c>.
         /// </summary>
         [JsonProperty("options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("options")]
+#endif
         public List<string> Options { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdate.cs b/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdate.cs
index 4c6da7618d..ed8f838764 100644
--- a/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdate.cs
+++ b/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdate.cs
@@ -3,6 +3,9 @@ namespace Stripe.BillingPortal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationFeaturesSubscriptionUpdate : StripeEntity<ConfigurationFeaturesSubscriptionUpdate>
     {
@@ -12,18 +15,27 @@ public class ConfigurationFeaturesSubscriptionUpdate : StripeEntity<Configuratio
         /// One of: <c>price</c>, <c>promotion_code</c>, or <c>quantity</c>.
         /// </summary>
         [JsonProperty("default_allowed_updates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_allowed_updates")]
+#endif
         public List<string> DefaultAllowedUpdates { get; set; }
 
         /// <summary>
         /// Whether the feature is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         /// <summary>
         /// The list of up to 10 products that support subscription updates.
         /// </summary>
         [JsonProperty("products")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("products")]
+#endif
         public List<ConfigurationFeaturesSubscriptionUpdateProduct> Products { get; set; }
 
         /// <summary>
@@ -33,9 +45,15 @@ public class ConfigurationFeaturesSubscriptionUpdate : StripeEntity<Configuratio
         /// One of: <c>always_invoice</c>, <c>create_prorations</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("proration_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("proration_behavior")]
+#endif
         public string ProrationBehavior { get; set; }
 
         [JsonProperty("schedule_at_period_end")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("schedule_at_period_end")]
+#endif
         public ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEnd ScheduleAtPeriodEnd { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdateProduct.cs b/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdateProduct.cs
index 2c6e3a8a6d..9c35a9f62d 100644
--- a/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdateProduct.cs
+++ b/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdateProduct.cs
@@ -3,6 +3,9 @@ namespace Stripe.BillingPortal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationFeaturesSubscriptionUpdateProduct : StripeEntity<ConfigurationFeaturesSubscriptionUpdateProduct>
     {
@@ -10,12 +13,18 @@ public class ConfigurationFeaturesSubscriptionUpdateProduct : StripeEntity<Confi
         /// The list of price IDs which, when subscribed to, a subscription can be updated.
         /// </summary>
         [JsonProperty("prices")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("prices")]
+#endif
         public List<string> Prices { get; set; }
 
         /// <summary>
         /// The product ID.
         /// </summary>
         [JsonProperty("product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product")]
+#endif
         public string Product { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEnd.cs b/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEnd.cs
index 95b8261885..ce7c0ade70 100644
--- a/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEnd.cs
+++ b/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEnd.cs
@@ -3,6 +3,9 @@ namespace Stripe.BillingPortal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEnd : StripeEntity<ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEnd>
     {
@@ -11,6 +14,9 @@ public class ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEnd : Stripe
         /// of the current period.
         /// </summary>
         [JsonProperty("conditions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("conditions")]
+#endif
         public List<ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEndCondition> Conditions { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEndCondition.cs b/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEndCondition.cs
index 17d5b3d627..565738fc43 100644
--- a/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEndCondition.cs
+++ b/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEndCondition.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEndCondition : StripeEntity<ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEndCondition>
     {
@@ -10,6 +13,9 @@ public class ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEndCondition
         /// One of: <c>decreasing_item_amount</c>, or <c>shortening_interval</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationLoginPage.cs b/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationLoginPage.cs
index b9ffa681f0..df04f9bd62 100644
--- a/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationLoginPage.cs
+++ b/src/Stripe.net/Entities/BillingPortal/Configurations/ConfigurationLoginPage.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationLoginPage : StripeEntity<ConfigurationLoginPage>
     {
@@ -12,6 +15,9 @@ public class ConfigurationLoginPage : StripeEntity<ConfigurationLoginPage>
         /// If <c>false</c>, the previously generated <c>url</c>, if any, will be deactivated.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class ConfigurationLoginPage : StripeEntity<ConfigurationLoginPage>
         /// receive a link to their customer portal.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BillingPortal/Sessions/Session.cs b/src/Stripe.net/Entities/BillingPortal/Sessions/Session.cs
index 9ccc397bf3..4dc22184ee 100644
--- a/src/Stripe.net/Entities/BillingPortal/Sessions/Session.cs
+++ b/src/Stripe.net/Entities/BillingPortal/Sessions/Session.cs
@@ -4,6 +4,9 @@ namespace Stripe.BillingPortal
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// The Billing customer portal is a Stripe-hosted UI for subscription and billing
@@ -20,18 +23,27 @@ namespace Stripe.BillingPortal
     ///
     /// Related guide: <a href="https://stripe.com/customer-management">Customer management</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class Session : StripeEntity<Session>, IHasId, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         #region Expandable Configuration
@@ -41,6 +53,9 @@ public class Session : StripeEntity<Session>, IHasId, IHasObject
         /// The configuration used by this session, describing the features available.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ConfigurationId
         {
             get => this.InternalConfiguration?.Id;
@@ -54,6 +69,9 @@ public string ConfigurationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Configuration Configuration
         {
             get => this.InternalConfiguration?.ExpandedObject;
@@ -62,6 +80,10 @@ public Configuration Configuration
 
         [JsonProperty("configuration")]
         [JsonConverter(typeof(ExpandableFieldConverter<Configuration>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("configuration")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Configuration>))]
+#endif
         internal ExpandableField<Configuration> InternalConfiguration { get; set; }
         #endregion
 
@@ -70,12 +92,19 @@ public Configuration Configuration
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// The ID of the customer for this session.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
@@ -84,6 +113,9 @@ public Configuration Configuration
         /// more about using customer portal deep links and flows.
         /// </summary>
         [JsonProperty("flow")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flow")]
+#endif
         public SessionFlow Flow { get; set; }
 
         /// <summary>
@@ -91,6 +123,9 @@ public Configuration Configuration
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -105,6 +140,9 @@ public Configuration Configuration
         /// <c>tr</c>, <c>vi</c>, <c>zh</c>, <c>zh-HK</c>, or <c>zh-TW</c>.
         /// </summary>
         [JsonProperty("locale")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("locale")]
+#endif
         public string Locale { get; set; }
 
         /// <summary>
@@ -118,6 +156,9 @@ public Configuration Configuration
         /// displays.
         /// </summary>
         [JsonProperty("on_behalf_of")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+#endif
         public string OnBehalfOf { get; set; }
 
         /// <summary>
@@ -125,12 +166,18 @@ public Configuration Configuration
         /// website.
         /// </summary>
         [JsonProperty("return_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_url")]
+#endif
         public string ReturnUrl { get; set; }
 
         /// <summary>
         /// The short-lived URL of the session that gives customers access to the customer portal.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlow.cs b/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlow.cs
index f4512888ce..260e6856a7 100644
--- a/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlow.cs
+++ b/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlow.cs
@@ -2,28 +2,43 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionFlow : StripeEntity<SessionFlow>
     {
         [JsonProperty("after_completion")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("after_completion")]
+#endif
         public SessionFlowAfterCompletion AfterCompletion { get; set; }
 
         /// <summary>
         /// Configuration when <c>flow.type=subscription_cancel</c>.
         /// </summary>
         [JsonProperty("subscription_cancel")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_cancel")]
+#endif
         public SessionFlowSubscriptionCancel SubscriptionCancel { get; set; }
 
         /// <summary>
         /// Configuration when <c>flow.type=subscription_update</c>.
         /// </summary>
         [JsonProperty("subscription_update")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_update")]
+#endif
         public SessionFlowSubscriptionUpdate SubscriptionUpdate { get; set; }
 
         /// <summary>
         /// Configuration when <c>flow.type=subscription_update_confirm</c>.
         /// </summary>
         [JsonProperty("subscription_update_confirm")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_update_confirm")]
+#endif
         public SessionFlowSubscriptionUpdateConfirm SubscriptionUpdateConfirm { get; set; }
 
         /// <summary>
@@ -32,6 +47,9 @@ public class SessionFlow : StripeEntity<SessionFlow>
         /// <c>subscription_update</c>, or <c>subscription_update_confirm</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowAfterCompletion.cs b/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowAfterCompletion.cs
index 08126036cf..ebcb5868aa 100644
--- a/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowAfterCompletion.cs
+++ b/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowAfterCompletion.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionFlowAfterCompletion : StripeEntity<SessionFlowAfterCompletion>
     {
@@ -9,12 +12,18 @@ public class SessionFlowAfterCompletion : StripeEntity<SessionFlowAfterCompletio
         /// Configuration when <c>after_completion.type=hosted_confirmation</c>.
         /// </summary>
         [JsonProperty("hosted_confirmation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hosted_confirmation")]
+#endif
         public SessionFlowAfterCompletionHostedConfirmation HostedConfirmation { get; set; }
 
         /// <summary>
         /// Configuration when <c>after_completion.type=redirect</c>.
         /// </summary>
         [JsonProperty("redirect")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("redirect")]
+#endif
         public SessionFlowAfterCompletionRedirect Redirect { get; set; }
 
         /// <summary>
@@ -22,6 +31,9 @@ public class SessionFlowAfterCompletion : StripeEntity<SessionFlowAfterCompletio
         /// One of: <c>hosted_confirmation</c>, <c>portal_homepage</c>, or <c>redirect</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowAfterCompletionHostedConfirmation.cs b/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowAfterCompletionHostedConfirmation.cs
index b17c341d8b..16594c8b3a 100644
--- a/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowAfterCompletionHostedConfirmation.cs
+++ b/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowAfterCompletionHostedConfirmation.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionFlowAfterCompletionHostedConfirmation : StripeEntity<SessionFlowAfterCompletionHostedConfirmation>
     {
@@ -9,6 +12,9 @@ public class SessionFlowAfterCompletionHostedConfirmation : StripeEntity<Session
         /// A custom message to display to the customer after the flow is completed.
         /// </summary>
         [JsonProperty("custom_message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_message")]
+#endif
         public string CustomMessage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowAfterCompletionRedirect.cs b/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowAfterCompletionRedirect.cs
index 08a872ea53..f2b3575671 100644
--- a/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowAfterCompletionRedirect.cs
+++ b/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowAfterCompletionRedirect.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionFlowAfterCompletionRedirect : StripeEntity<SessionFlowAfterCompletionRedirect>
     {
@@ -9,6 +12,9 @@ public class SessionFlowAfterCompletionRedirect : StripeEntity<SessionFlowAfterC
         /// The URL the customer will be redirected to after the flow is completed.
         /// </summary>
         [JsonProperty("return_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_url")]
+#endif
         public string ReturnUrl { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowSubscriptionCancel.cs b/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowSubscriptionCancel.cs
index 72f18f82da..81bee9cf71 100644
--- a/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowSubscriptionCancel.cs
+++ b/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowSubscriptionCancel.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionFlowSubscriptionCancel : StripeEntity<SessionFlowSubscriptionCancel>
     {
@@ -9,12 +12,18 @@ public class SessionFlowSubscriptionCancel : StripeEntity<SessionFlowSubscriptio
         /// Specify a retention strategy to be used in the cancellation flow.
         /// </summary>
         [JsonProperty("retention")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("retention")]
+#endif
         public SessionFlowSubscriptionCancelRetention Retention { get; set; }
 
         /// <summary>
         /// The ID of the subscription to be canceled.
         /// </summary>
         [JsonProperty("subscription")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription")]
+#endif
         public string Subscription { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowSubscriptionCancelRetention.cs b/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowSubscriptionCancelRetention.cs
index 6c0a144605..efeab892f7 100644
--- a/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowSubscriptionCancelRetention.cs
+++ b/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowSubscriptionCancelRetention.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionFlowSubscriptionCancelRetention : StripeEntity<SessionFlowSubscriptionCancelRetention>
     {
@@ -9,12 +12,18 @@ public class SessionFlowSubscriptionCancelRetention : StripeEntity<SessionFlowSu
         /// Configuration when <c>retention.type=coupon_offer</c>.
         /// </summary>
         [JsonProperty("coupon_offer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon_offer")]
+#endif
         public SessionFlowSubscriptionCancelRetentionCouponOffer CouponOffer { get; set; }
 
         /// <summary>
         /// Type of retention strategy that will be used.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowSubscriptionCancelRetentionCouponOffer.cs b/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowSubscriptionCancelRetentionCouponOffer.cs
index 1447b8c315..27480a647b 100644
--- a/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowSubscriptionCancelRetentionCouponOffer.cs
+++ b/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowSubscriptionCancelRetentionCouponOffer.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionFlowSubscriptionCancelRetentionCouponOffer : StripeEntity<SessionFlowSubscriptionCancelRetentionCouponOffer>
     {
@@ -9,6 +12,9 @@ public class SessionFlowSubscriptionCancelRetentionCouponOffer : StripeEntity<Se
         /// The ID of the coupon to be offered.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowSubscriptionUpdate.cs b/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowSubscriptionUpdate.cs
index 3d60259714..dc8c88f449 100644
--- a/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowSubscriptionUpdate.cs
+++ b/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowSubscriptionUpdate.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionFlowSubscriptionUpdate : StripeEntity<SessionFlowSubscriptionUpdate>
     {
@@ -9,6 +12,9 @@ public class SessionFlowSubscriptionUpdate : StripeEntity<SessionFlowSubscriptio
         /// The ID of the subscription to be updated.
         /// </summary>
         [JsonProperty("subscription")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription")]
+#endif
         public string Subscription { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowSubscriptionUpdateConfirm.cs b/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowSubscriptionUpdateConfirm.cs
index 711ded7d32..7846c77525 100644
--- a/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowSubscriptionUpdateConfirm.cs
+++ b/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowSubscriptionUpdateConfirm.cs
@@ -3,6 +3,9 @@ namespace Stripe.BillingPortal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionFlowSubscriptionUpdateConfirm : StripeEntity<SessionFlowSubscriptionUpdateConfirm>
     {
@@ -11,6 +14,9 @@ public class SessionFlowSubscriptionUpdateConfirm : StripeEntity<SessionFlowSubs
         /// one may be specified.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<SessionFlowSubscriptionUpdateConfirmDiscount> Discounts { get; set; }
 
         /// <summary>
@@ -19,12 +25,18 @@ public class SessionFlowSubscriptionUpdateConfirm : StripeEntity<SessionFlowSubs
         /// with multiple items are not updatable.
         /// </summary>
         [JsonProperty("items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("items")]
+#endif
         public List<SessionFlowSubscriptionUpdateConfirmItem> Items { get; set; }
 
         /// <summary>
         /// The ID of the subscription to be updated.
         /// </summary>
         [JsonProperty("subscription")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription")]
+#endif
         public string Subscription { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowSubscriptionUpdateConfirmDiscount.cs b/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowSubscriptionUpdateConfirmDiscount.cs
index 388e69d787..04f101106e 100644
--- a/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowSubscriptionUpdateConfirmDiscount.cs
+++ b/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowSubscriptionUpdateConfirmDiscount.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionFlowSubscriptionUpdateConfirmDiscount : StripeEntity<SessionFlowSubscriptionUpdateConfirmDiscount>
     {
@@ -9,12 +12,18 @@ public class SessionFlowSubscriptionUpdateConfirmDiscount : StripeEntity<Session
         /// The ID of the coupon to apply to this subscription update.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
         /// The ID of a promotion code to apply to this subscription update.
         /// </summary>
         [JsonProperty("promotion_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotion_code")]
+#endif
         public string PromotionCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowSubscriptionUpdateConfirmItem.cs b/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowSubscriptionUpdateConfirmItem.cs
index 2ce802db40..354f332c1a 100644
--- a/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowSubscriptionUpdateConfirmItem.cs
+++ b/src/Stripe.net/Entities/BillingPortal/Sessions/SessionFlowSubscriptionUpdateConfirmItem.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionFlowSubscriptionUpdateConfirmItem : StripeEntity<SessionFlowSubscriptionUpdateConfirmItem>, IHasId
     {
@@ -11,6 +14,9 @@ public class SessionFlowSubscriptionUpdateConfirmItem : StripeEntity<SessionFlow
         /// item</a> to be updated.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class SessionFlowSubscriptionUpdateConfirmItem : StripeEntity<SessionFlow
         /// href="https://stripe.com/docs/api/customer_portal/configuration#portal_configuration_object-features-subscription_update-products"><c>features.subscription_update.products</c></a>.
         /// </summary>
         [JsonProperty("price")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price")]
+#endif
         public string Price { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class SessionFlowSubscriptionUpdateConfirmItem : StripeEntity<SessionFlow
         /// that the customer should subscribe to through this flow.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long Quantity { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Capabilities/Capability.cs b/src/Stripe.net/Entities/Capabilities/Capability.cs
index b460af24e2..3e726450fc 100644
--- a/src/Stripe.net/Entities/Capabilities/Capability.cs
+++ b/src/Stripe.net/Entities/Capabilities/Capability.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// This is an object representing a capability for a Stripe account.
@@ -11,18 +14,27 @@ namespace Stripe
     /// Related guide: <a href="https://stripe.com/docs/connect/account-capabilities">Account
     /// capabilities</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class Capability : StripeEntity<Capability>, IHasId, IHasObject
     {
         /// <summary>
         /// The identifier for the capability.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         #region Expandable Account
@@ -32,6 +44,9 @@ public class Capability : StripeEntity<Capability>, IHasId, IHasObject
         /// The account for which the capability enables functionality.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AccountId
         {
             get => this.InternalAccount?.Id;
@@ -45,6 +60,9 @@ public string AccountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Account
         {
             get => this.InternalAccount?.ExpandedObject;
@@ -53,16 +71,26 @@ public Account Account
 
         [JsonProperty("account")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalAccount { get; set; }
         #endregion
 
         [JsonProperty("future_requirements")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("future_requirements")]
+#endif
         public CapabilityFutureRequirements FutureRequirements { get; set; }
 
         /// <summary>
         /// Whether the capability has been requested.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool Requested { get; set; }
 
         /// <summary>
@@ -70,9 +98,16 @@ public Account Account
         /// </summary>
         [JsonProperty("requested_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? RequestedAt { get; set; }
 
         [JsonProperty("requirements")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requirements")]
+#endif
         public CapabilityRequirements Requirements { get; set; }
 
         /// <summary>
@@ -81,6 +116,9 @@ public Account Account
         /// <c>unrequested</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Capabilities/CapabilityFutureRequirements.cs b/src/Stripe.net/Entities/Capabilities/CapabilityFutureRequirements.cs
index a51158382d..6f01dc3fa2 100644
--- a/src/Stripe.net/Entities/Capabilities/CapabilityFutureRequirements.cs
+++ b/src/Stripe.net/Entities/Capabilities/CapabilityFutureRequirements.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CapabilityFutureRequirements : StripeEntity<CapabilityFutureRequirements>
     {
@@ -13,6 +16,9 @@ public class CapabilityFutureRequirements : StripeEntity<CapabilityFutureRequire
         /// fields instead.
         /// </summary>
         [JsonProperty("alternatives")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alternatives")]
+#endif
         public List<CapabilityFutureRequirementsAlternative> Alternatives { get; set; }
 
         /// <summary>
@@ -23,6 +29,10 @@ public class CapabilityFutureRequirements : StripeEntity<CapabilityFutureRequire
         /// </summary>
         [JsonProperty("current_deadline")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("current_deadline")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? CurrentDeadline { get; set; }
 
         /// <summary>
@@ -31,6 +41,9 @@ public class CapabilityFutureRequirements : StripeEntity<CapabilityFutureRequire
         /// <c>requirements</c> hash.
         /// </summary>
         [JsonProperty("currently_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currently_due")]
+#endif
         public List<string> CurrentlyDue { get; set; }
 
         /// <summary>
@@ -43,6 +56,9 @@ public class CapabilityFutureRequirements : StripeEntity<CapabilityFutureRequire
         /// or <c>requirements.fields_needed</c>.
         /// </summary>
         [JsonProperty("disabled_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("disabled_reason")]
+#endif
         public string DisabledReason { get; set; }
 
         /// <summary>
@@ -50,6 +66,9 @@ public class CapabilityFutureRequirements : StripeEntity<CapabilityFutureRequire
         /// or verification failed.
         /// </summary>
         [JsonProperty("errors")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("errors")]
+#endif
         public List<CapabilityFutureRequirementsError> Errors { get; set; }
 
         /// <summary>
@@ -57,6 +76,9 @@ public class CapabilityFutureRequirements : StripeEntity<CapabilityFutureRequire
         /// appear in <c>currently_due</c> as well.
         /// </summary>
         [JsonProperty("eventually_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eventually_due")]
+#endif
         public List<string> EventuallyDue { get; set; }
 
         /// <summary>
@@ -66,6 +88,9 @@ public class CapabilityFutureRequirements : StripeEntity<CapabilityFutureRequire
         /// <c>requirements.past_due</c>.
         /// </summary>
         [JsonProperty("past_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("past_due")]
+#endif
         public List<string> PastDue { get; set; }
 
         /// <summary>
@@ -77,6 +102,9 @@ public class CapabilityFutureRequirements : StripeEntity<CapabilityFutureRequire
         /// pending.
         /// </summary>
         [JsonProperty("pending_verification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pending_verification")]
+#endif
         public List<string> PendingVerification { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Capabilities/CapabilityFutureRequirementsAlternative.cs b/src/Stripe.net/Entities/Capabilities/CapabilityFutureRequirementsAlternative.cs
index acda904506..5804eb74ef 100644
--- a/src/Stripe.net/Entities/Capabilities/CapabilityFutureRequirementsAlternative.cs
+++ b/src/Stripe.net/Entities/Capabilities/CapabilityFutureRequirementsAlternative.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CapabilityFutureRequirementsAlternative : StripeEntity<CapabilityFutureRequirementsAlternative>
     {
@@ -10,6 +13,9 @@ public class CapabilityFutureRequirementsAlternative : StripeEntity<CapabilityFu
         /// Fields that can be provided to satisfy all fields in <c>original_fields_due</c>.
         /// </summary>
         [JsonProperty("alternative_fields_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alternative_fields_due")]
+#endif
         public List<string> AlternativeFieldsDue { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class CapabilityFutureRequirementsAlternative : StripeEntity<CapabilityFu
         /// <c>alternative_fields_due</c>.
         /// </summary>
         [JsonProperty("original_fields_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("original_fields_due")]
+#endif
         public List<string> OriginalFieldsDue { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Capabilities/CapabilityFutureRequirementsError.cs b/src/Stripe.net/Entities/Capabilities/CapabilityFutureRequirementsError.cs
index 726c60f913..b1b9fb5bdb 100644
--- a/src/Stripe.net/Entities/Capabilities/CapabilityFutureRequirementsError.cs
+++ b/src/Stripe.net/Entities/Capabilities/CapabilityFutureRequirementsError.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CapabilityFutureRequirementsError : StripeEntity<CapabilityFutureRequirementsError>
     {
@@ -69,6 +72,9 @@ public class CapabilityFutureRequirementsError : StripeEntity<CapabilityFutureRe
         /// <c>verification_supportability</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
@@ -76,6 +82,9 @@ public class CapabilityFutureRequirementsError : StripeEntity<CapabilityFutureRe
         /// about the error.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
 
         /// <summary>
@@ -83,6 +92,9 @@ public class CapabilityFutureRequirementsError : StripeEntity<CapabilityFutureRe
         /// be resolved.
         /// </summary>
         [JsonProperty("requirement")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requirement")]
+#endif
         public string Requirement { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Capabilities/CapabilityRequirements.cs b/src/Stripe.net/Entities/Capabilities/CapabilityRequirements.cs
index 2776ebb668..bc6d40266f 100644
--- a/src/Stripe.net/Entities/Capabilities/CapabilityRequirements.cs
+++ b/src/Stripe.net/Entities/Capabilities/CapabilityRequirements.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CapabilityRequirements : StripeEntity<CapabilityRequirements>
     {
@@ -13,6 +16,9 @@ public class CapabilityRequirements : StripeEntity<CapabilityRequirements>
         /// fields instead.
         /// </summary>
         [JsonProperty("alternatives")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alternatives")]
+#endif
         public List<CapabilityRequirementsAlternative> Alternatives { get; set; }
 
         /// <summary>
@@ -22,6 +28,10 @@ public class CapabilityRequirements : StripeEntity<CapabilityRequirements>
         /// </summary>
         [JsonProperty("current_deadline")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("current_deadline")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? CurrentDeadline { get; set; }
 
         /// <summary>
@@ -30,6 +40,9 @@ public class CapabilityRequirements : StripeEntity<CapabilityRequirements>
         /// capability is disabled.
         /// </summary>
         [JsonProperty("currently_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currently_due")]
+#endif
         public List<string> CurrentlyDue { get; set; }
 
         /// <summary>
@@ -42,6 +55,9 @@ public class CapabilityRequirements : StripeEntity<CapabilityRequirements>
         /// or <c>requirements.fields_needed</c>.
         /// </summary>
         [JsonProperty("disabled_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("disabled_reason")]
+#endif
         public string DisabledReason { get; set; }
 
         /// <summary>
@@ -49,6 +65,9 @@ public class CapabilityRequirements : StripeEntity<CapabilityRequirements>
         /// or verification failed.
         /// </summary>
         [JsonProperty("errors")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("errors")]
+#endif
         public List<AccountRequirementsError> Errors { get; set; }
 
         /// <summary>
@@ -56,6 +75,9 @@ public class CapabilityRequirements : StripeEntity<CapabilityRequirements>
         /// appear in <c>currently_due</c> as well, and <c>current_deadline</c> becomes set.
         /// </summary>
         [JsonProperty("eventually_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eventually_due")]
+#endif
         public List<string> EventuallyDue { get; set; }
 
         /// <summary>
@@ -63,6 +85,9 @@ public class CapabilityRequirements : StripeEntity<CapabilityRequirements>
         /// collected to enable the capability on the account.
         /// </summary>
         [JsonProperty("past_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("past_due")]
+#endif
         public List<string> PastDue { get; set; }
 
         /// <summary>
@@ -74,6 +99,9 @@ public class CapabilityRequirements : StripeEntity<CapabilityRequirements>
         /// verification is still pending.
         /// </summary>
         [JsonProperty("pending_verification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pending_verification")]
+#endif
         public List<string> PendingVerification { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Capabilities/CapabilityRequirementsAlternative.cs b/src/Stripe.net/Entities/Capabilities/CapabilityRequirementsAlternative.cs
index f698304177..e390f41909 100644
--- a/src/Stripe.net/Entities/Capabilities/CapabilityRequirementsAlternative.cs
+++ b/src/Stripe.net/Entities/Capabilities/CapabilityRequirementsAlternative.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CapabilityRequirementsAlternative : StripeEntity<CapabilityRequirementsAlternative>
     {
@@ -10,6 +13,9 @@ public class CapabilityRequirementsAlternative : StripeEntity<CapabilityRequirem
         /// Fields that can be provided to satisfy all fields in <c>original_fields_due</c>.
         /// </summary>
         [JsonProperty("alternative_fields_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alternative_fields_due")]
+#endif
         public List<string> AlternativeFieldsDue { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class CapabilityRequirementsAlternative : StripeEntity<CapabilityRequirem
         /// <c>alternative_fields_due</c>.
         /// </summary>
         [JsonProperty("original_fields_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("original_fields_due")]
+#endif
         public List<string> OriginalFieldsDue { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Cards/Card.cs b/src/Stripe.net/Entities/Cards/Card.cs
index eb071a63fa..fb4b4dee92 100644
--- a/src/Stripe.net/Entities/Cards/Card.cs
+++ b/src/Stripe.net/Entities/Cards/Card.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// You can store multiple cards on a customer in order to charge the customer later. You
@@ -13,18 +16,27 @@ namespace Stripe
     /// Related guide: <a href="https://stripe.com/docs/sources/cards">Card payments with
     /// Sources</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class Card : StripeEntity<Card>, IHasId, IHasMetadata, IHasObject, IExternalAccount, IPaymentSource
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         #region Expandable Account
@@ -38,6 +50,9 @@ public class Card : StripeEntity<Card>, IHasId, IHasMetadata, IHasObject, IExter
         /// is <c>application</c>, which includes Custom accounts.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AccountId
         {
             get => this.InternalAccount?.Id;
@@ -55,6 +70,9 @@ public string AccountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Account
         {
             get => this.InternalAccount?.ExpandedObject;
@@ -63,6 +81,10 @@ public Account Account
 
         [JsonProperty("account")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalAccount { get; set; }
         #endregion
 
@@ -70,18 +92,27 @@ public Account Account
         /// City/District/Suburb/Town/Village.
         /// </summary>
         [JsonProperty("address_city")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_city")]
+#endif
         public string AddressCity { get; set; }
 
         /// <summary>
         /// Billing address country, if provided when creating card.
         /// </summary>
         [JsonProperty("address_country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_country")]
+#endif
         public string AddressCountry { get; set; }
 
         /// <summary>
         /// Address line 1 (Street address/PO Box/Company name).
         /// </summary>
         [JsonProperty("address_line1")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_line1")]
+#endif
         public string AddressLine1 { get; set; }
 
         /// <summary>
@@ -89,24 +120,36 @@ public Account Account
         /// <c>unavailable</c>, or <c>unchecked</c>.
         /// </summary>
         [JsonProperty("address_line1_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_line1_check")]
+#endif
         public string AddressLine1Check { get; set; }
 
         /// <summary>
         /// Address line 2 (Apartment/Suite/Unit/Building).
         /// </summary>
         [JsonProperty("address_line2")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_line2")]
+#endif
         public string AddressLine2 { get; set; }
 
         /// <summary>
         /// State/County/Province/Region.
         /// </summary>
         [JsonProperty("address_state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_state")]
+#endif
         public string AddressState { get; set; }
 
         /// <summary>
         /// ZIP or postal code.
         /// </summary>
         [JsonProperty("address_zip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_zip")]
+#endif
         public string AddressZip { get; set; }
 
         /// <summary>
@@ -114,6 +157,9 @@ public Account Account
         /// <c>unavailable</c>, or <c>unchecked</c>.
         /// </summary>
         [JsonProperty("address_zip_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_zip_check")]
+#endif
         public string AddressZipCheck { get; set; }
 
         /// <summary>
@@ -124,6 +170,9 @@ public Account Account
         /// One of: <c>always</c>, <c>limited</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("allow_redisplay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allow_redisplay")]
+#endif
         public string AllowRedisplay { get; set; }
 
         /// <summary>
@@ -132,6 +181,9 @@ public Account Account
         /// One of: <c>instant</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("available_payout_methods")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available_payout_methods")]
+#endif
         public List<string> AvailablePayoutMethods { get; set; }
 
         /// <summary>
@@ -140,6 +192,9 @@ public Account Account
         /// <c>UnionPay</c>, <c>Visa</c>, or <c>Unknown</c>.
         /// </summary>
         [JsonProperty("brand")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brand")]
+#endif
         public string Brand { get; set; }
 
         /// <summary>
@@ -147,6 +202,9 @@ public Account Account
         /// to get a sense of the international breakdown of cards you've collected.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -159,6 +217,9 @@ public Account Account
         /// is <c>application</c>, which includes Custom accounts.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         #region Expandable Customer
@@ -169,6 +230,9 @@ public Account Account
         /// the card belongs to an account or recipient instead.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerId
         {
             get => this.InternalCustomer?.Id;
@@ -183,6 +247,9 @@ public string CustomerId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Customer Customer
         {
             get => this.InternalCustomer?.ExpandedObject;
@@ -191,6 +258,10 @@ public Customer Customer
 
         [JsonProperty("customer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Customer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Customer>))]
+#endif
         internal ExpandableField<Customer> InternalCustomer { get; set; }
         #endregion
 
@@ -203,6 +274,9 @@ public Customer Customer
         /// if a card is valid without a charge</a>.
         /// </summary>
         [JsonProperty("cvc_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cvc_check")]
+#endif
         public string CvcCheck { get; set; }
 
         /// <summary>
@@ -212,12 +286,19 @@ public Customer Customer
         /// is <c>application</c>, which includes Custom accounts.
         /// </summary>
         [JsonProperty("default_for_currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_for_currency")]
+#endif
         public bool? DefaultForCurrency { get; set; }
 
         /// <summary>
         /// Whether this object is deleted or not.
         /// </summary>
         [JsonProperty("deleted", NullValueHandling = NullValueHandling.Ignore)]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+        [STJS.JsonIgnore(Condition = STJS.JsonIgnoreCondition.WhenWritingNull)]
+#endif
         public bool? Deleted { get; set; }
 
         /// <summary>
@@ -225,24 +306,36 @@ public Customer Customer
         /// only and not typically available in standard API requests.).
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// (For tokenized numbers only.) The last four digits of the device account number.
         /// </summary>
         [JsonProperty("dynamic_last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dynamic_last4")]
+#endif
         public string DynamicLast4 { get; set; }
 
         /// <summary>
         /// Two-digit number representing the card's expiration month.
         /// </summary>
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public long ExpMonth { get; set; }
 
         /// <summary>
         /// Four-digit number representing the card's expiration year.
         /// </summary>
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public long ExpYear { get; set; }
 
         /// <summary>
@@ -255,6 +348,9 @@ public Customer Customer
         /// fingerprints for the same card---one for India and one for the rest of the world.</em>.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
@@ -262,6 +358,9 @@ public Customer Customer
         /// <c>unknown</c>.
         /// </summary>
         [JsonProperty("funding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding")]
+#endif
         public string Funding { get; set; }
 
         /// <summary>
@@ -269,6 +368,9 @@ public Customer Customer
         /// available in standard API requests.).
         /// </summary>
         [JsonProperty("iin")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iin")]
+#endif
         public string Iin { get; set; }
 
         /// <summary>
@@ -276,12 +378,18 @@ public Customer Customer
         /// in standard API requests.).
         /// </summary>
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public string Issuer { get; set; }
 
         /// <summary>
         /// The last four digits of the card.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
@@ -290,15 +398,24 @@ public Customer Customer
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Cardholder name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         [JsonProperty("networks")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("networks")]
+#endif
         public CardNetworks Networks { get; set; }
 
         /// <summary>
@@ -306,6 +423,9 @@ public Customer Customer
         /// One of: <c>regulated</c>, or <c>unregulated</c>.
         /// </summary>
         [JsonProperty("regulated_status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("regulated_status")]
+#endif
         public string RegulatedStatus { get; set; }
 
         /// <summary>
@@ -315,6 +435,9 @@ public Customer Customer
         /// until account details are updated.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -323,6 +446,9 @@ public Customer Customer
         /// <c>visa_checkout</c>, or null.
         /// </summary>
         [JsonProperty("tokenization_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tokenization_method")]
+#endif
         public string TokenizationMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Cards/CardNetworks.cs b/src/Stripe.net/Entities/Cards/CardNetworks.cs
index 8d583439c0..3c68c4ca83 100644
--- a/src/Stripe.net/Entities/Cards/CardNetworks.cs
+++ b/src/Stripe.net/Entities/Cards/CardNetworks.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardNetworks : StripeEntity<CardNetworks>
     {
@@ -11,6 +14,9 @@ public class CardNetworks : StripeEntity<CardNetworks>
         /// valid for the card.
         /// </summary>
         [JsonProperty("preferred")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred")]
+#endif
         public string Preferred { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/CashBalances/CashBalance.cs b/src/Stripe.net/Entities/CashBalances/CashBalance.cs
index 63abbecdaf..46e69847e8 100644
--- a/src/Stripe.net/Entities/CashBalances/CashBalance.cs
+++ b/src/Stripe.net/Entities/CashBalances/CashBalance.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A customer's <c>Cash balance</c> represents real funds. Customers can add funds to their
@@ -15,6 +18,9 @@ public class CashBalance : StripeEntity<CashBalance>, IHasObject
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -23,12 +29,18 @@ public class CashBalance : StripeEntity<CashBalance>, IHasObject
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public Dictionary<string, long> Available { get; set; }
 
         /// <summary>
         /// The ID of the customer whose cash balance this object represents.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
@@ -36,9 +48,15 @@ public class CashBalance : StripeEntity<CashBalance>, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         [JsonProperty("settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("settings")]
+#endif
         public CashBalanceSettings Settings { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/CashBalances/CashBalanceSettings.cs b/src/Stripe.net/Entities/CashBalances/CashBalanceSettings.cs
index 44512f5f36..cafed2e7d0 100644
--- a/src/Stripe.net/Entities/CashBalances/CashBalanceSettings.cs
+++ b/src/Stripe.net/Entities/CashBalances/CashBalanceSettings.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CashBalanceSettings : StripeEntity<CashBalanceSettings>
     {
@@ -10,6 +13,9 @@ public class CashBalanceSettings : StripeEntity<CashBalanceSettings>
         /// One of: <c>automatic</c>, or <c>manual</c>.
         /// </summary>
         [JsonProperty("reconciliation_mode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reconciliation_mode")]
+#endif
         public string ReconciliationMode { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class CashBalanceSettings : StripeEntity<CashBalanceSettings>
         /// to this customer cash balance.
         /// </summary>
         [JsonProperty("using_merchant_default")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("using_merchant_default")]
+#endif
         public bool UsingMerchantDefault { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/Charge.cs b/src/Stripe.net/Entities/Charges/Charge.cs
index 60487e9e07..452ad563c5 100644
--- a/src/Stripe.net/Entities/Charges/Charge.cs
+++ b/src/Stripe.net/Entities/Charges/Charge.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// The <c>Charge</c> object represents a single attempt to move money into your Stripe
@@ -13,18 +16,27 @@ namespace Stripe
     /// Some legacy payment flows create Charges directly, which is not recommended for new
     /// integrations.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class Charge : StripeEntity<Charge>, IHasId, IHasMetadata, IHasObject, IBalanceTransactionSource
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -37,6 +49,9 @@ public class Charge : StripeEntity<Charge>, IHasId, IHasMetadata, IHasObject, IB
         /// 99999999 for a USD charge of $999,999.99).
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -44,6 +59,9 @@ public class Charge : StripeEntity<Charge>, IHasId, IHasMetadata, IHasObject, IB
         /// the charge if a partial capture was made).
         /// </summary>
         [JsonProperty("amount_captured")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_captured")]
+#endif
         public long AmountCaptured { get; set; }
 
         /// <summary>
@@ -51,6 +69,9 @@ public class Charge : StripeEntity<Charge>, IHasId, IHasMetadata, IHasObject, IB
         /// the charge if a partial refund was issued).
         /// </summary>
         [JsonProperty("amount_refunded")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_refunded")]
+#endif
         public long AmountRefunded { get; set; }
 
         #region Expandable Application
@@ -60,6 +81,9 @@ public class Charge : StripeEntity<Charge>, IHasId, IHasMetadata, IHasObject, IB
         /// ID of the Connect application that created the charge.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ApplicationId
         {
             get => this.InternalApplication?.Id;
@@ -73,6 +97,9 @@ public string ApplicationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Application Application
         {
             get => this.InternalApplication?.ExpandedObject;
@@ -81,6 +108,10 @@ public Application Application
 
         [JsonProperty("application")]
         [JsonConverter(typeof(ExpandableFieldConverter<Application>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Application>))]
+#endif
         internal ExpandableField<Application> InternalApplication { get; set; }
         #endregion
 
@@ -93,6 +124,9 @@ public Application Application
         /// documentation</a> for details.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ApplicationFeeId
         {
             get => this.InternalApplicationFee?.Id;
@@ -108,6 +142,9 @@ public string ApplicationFeeId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public ApplicationFee ApplicationFee
         {
             get => this.InternalApplicationFee?.ExpandedObject;
@@ -116,6 +153,10 @@ public ApplicationFee ApplicationFee
 
         [JsonProperty("application_fee")]
         [JsonConverter(typeof(ExpandableFieldConverter<ApplicationFee>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<ApplicationFee>))]
+#endif
         internal ExpandableField<ApplicationFee> InternalApplicationFee { get; set; }
         #endregion
 
@@ -125,12 +166,18 @@ public ApplicationFee ApplicationFee
         /// documentation</a> for details.
         /// </summary>
         [JsonProperty("application_fee_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_amount")]
+#endif
         public long? ApplicationFeeAmount { get; set; }
 
         /// <summary>
         /// Authorization code on the charge.
         /// </summary>
         [JsonProperty("authorization_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("authorization_code")]
+#endif
         public string AuthorizationCode { get; set; }
 
         #region Expandable BalanceTransaction
@@ -141,6 +188,9 @@ public ApplicationFee ApplicationFee
         /// balance (not including refunds or disputes).
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string BalanceTransactionId
         {
             get => this.InternalBalanceTransaction?.Id;
@@ -155,6 +205,9 @@ public string BalanceTransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public BalanceTransaction BalanceTransaction
         {
             get => this.InternalBalanceTransaction?.ExpandedObject;
@@ -163,10 +216,17 @@ public BalanceTransaction BalanceTransaction
 
         [JsonProperty("balance_transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<BalanceTransaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("balance_transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<BalanceTransaction>))]
+#endif
         internal ExpandableField<BalanceTransaction> InternalBalanceTransaction { get; set; }
         #endregion
 
         [JsonProperty("billing_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_details")]
+#endif
         public ChargeBillingDetails BillingDetails { get; set; }
 
         /// <summary>
@@ -176,6 +236,9 @@ public BalanceTransaction BalanceTransaction
         /// only exists for card payments.
         /// </summary>
         [JsonProperty("calculated_statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("calculated_statement_descriptor")]
+#endif
         public string CalculatedStatementDescriptor { get; set; }
 
         /// <summary>
@@ -183,6 +246,9 @@ public BalanceTransaction BalanceTransaction
         /// uncaptured or has since been captured.
         /// </summary>
         [JsonProperty("captured")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("captured")]
+#endif
         public bool Captured { get; set; }
 
         /// <summary>
@@ -190,6 +256,10 @@ public BalanceTransaction BalanceTransaction
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -198,6 +268,9 @@ public BalanceTransaction BalanceTransaction
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         #region Expandable Customer
@@ -207,6 +280,9 @@ public BalanceTransaction BalanceTransaction
         /// ID of the customer this charge is for if one exists.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerId
         {
             get => this.InternalCustomer?.Id;
@@ -220,6 +296,9 @@ public string CustomerId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Customer Customer
         {
             get => this.InternalCustomer?.ExpandedObject;
@@ -228,6 +307,10 @@ public Customer Customer
 
         [JsonProperty("customer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Customer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Customer>))]
+#endif
         internal ExpandableField<Customer> InternalCustomer { get; set; }
         #endregion
 
@@ -235,12 +318,18 @@ public Customer Customer
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// Whether the charge has been disputed.
         /// </summary>
         [JsonProperty("disputed")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("disputed")]
+#endif
         public bool Disputed { get; set; }
 
         #region Expandable FailureBalanceTransaction
@@ -251,6 +340,9 @@ public Customer Customer
         /// due to payment failure.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string FailureBalanceTransactionId
         {
             get => this.InternalFailureBalanceTransaction?.Id;
@@ -265,6 +357,9 @@ public string FailureBalanceTransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public BalanceTransaction FailureBalanceTransaction
         {
             get => this.InternalFailureBalanceTransaction?.ExpandedObject;
@@ -273,6 +368,10 @@ public BalanceTransaction FailureBalanceTransaction
 
         [JsonProperty("failure_balance_transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<BalanceTransaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("failure_balance_transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<BalanceTransaction>))]
+#endif
         internal ExpandableField<BalanceTransaction> InternalFailureBalanceTransaction { get; set; }
         #endregion
 
@@ -281,18 +380,27 @@ public BalanceTransaction FailureBalanceTransaction
         /// href="https://stripe.com/docs/error-codes">the errors section</a> for a list of codes).
         /// </summary>
         [JsonProperty("failure_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("failure_code")]
+#endif
         public string FailureCode { get; set; }
 
         /// <summary>
         /// Message to user further explaining reason for charge failure if available.
         /// </summary>
         [JsonProperty("failure_message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("failure_message")]
+#endif
         public string FailureMessage { get; set; }
 
         /// <summary>
         /// Information on fraud assessments for the charge.
         /// </summary>
         [JsonProperty("fraud_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fraud_details")]
+#endif
         public ChargeFraudDetails FraudDetails { get; set; }
 
         #region Expandable Invoice
@@ -302,6 +410,9 @@ public BalanceTransaction FailureBalanceTransaction
         /// ID of the invoice this charge is for if one exists.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string InvoiceId
         {
             get => this.InternalInvoice?.Id;
@@ -315,6 +426,9 @@ public string InvoiceId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Invoice Invoice
         {
             get => this.InternalInvoice?.ExpandedObject;
@@ -323,10 +437,17 @@ public Invoice Invoice
 
         [JsonProperty("invoice")]
         [JsonConverter(typeof(ExpandableFieldConverter<Invoice>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Invoice>))]
+#endif
         internal ExpandableField<Invoice> InternalInvoice { get; set; }
         #endregion
 
         [JsonProperty("level3")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("level3")]
+#endif
         public ChargeLevel3 Level3 { get; set; }
 
         /// <summary>
@@ -334,6 +455,9 @@ public Invoice Invoice
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -342,6 +466,9 @@ public Invoice Invoice
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         #region Expandable OnBehalfOf
@@ -354,6 +481,9 @@ public Invoice Invoice
         /// documentation</a> for details.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string OnBehalfOfId
         {
             get => this.InternalOnBehalfOf?.Id;
@@ -370,6 +500,9 @@ public string OnBehalfOfId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account OnBehalfOf
         {
             get => this.InternalOnBehalfOf?.ExpandedObject;
@@ -378,6 +511,10 @@ public Account OnBehalfOf
 
         [JsonProperty("on_behalf_of")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalOnBehalfOf { get; set; }
         #endregion
 
@@ -386,12 +523,18 @@ public Account OnBehalfOf
         /// href="https://stripe.com/docs/declines">understanding declines</a> for details.
         /// </summary>
         [JsonProperty("outcome")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("outcome")]
+#endif
         public ChargeOutcome Outcome { get; set; }
 
         /// <summary>
         /// <c>true</c> if the charge succeeded, or was successfully authorized for later capture.
         /// </summary>
         [JsonProperty("paid")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paid")]
+#endif
         public bool Paid { get; set; }
 
         #region Expandable PaymentIntent
@@ -401,6 +544,9 @@ public Account OnBehalfOf
         /// ID of the PaymentIntent associated with this charge, if one exists.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string PaymentIntentId
         {
             get => this.InternalPaymentIntent?.Id;
@@ -414,6 +560,9 @@ public string PaymentIntentId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PaymentIntent PaymentIntent
         {
             get => this.InternalPaymentIntent?.ExpandedObject;
@@ -422,6 +571,10 @@ public PaymentIntent PaymentIntent
 
         [JsonProperty("payment_intent")]
         [JsonConverter(typeof(ExpandableFieldConverter<PaymentIntent>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_intent")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PaymentIntent>))]
+#endif
         internal ExpandableField<PaymentIntent> InternalPaymentIntent { get; set; }
         #endregion
 
@@ -429,12 +582,18 @@ public PaymentIntent PaymentIntent
         /// ID of the payment method used in this charge.
         /// </summary>
         [JsonProperty("payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method")]
+#endif
         public string PaymentMethod { get; set; }
 
         /// <summary>
         /// Details about the payment method at the time of the transaction.
         /// </summary>
         [JsonProperty("payment_method_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_details")]
+#endif
         public ChargePaymentMethodDetails PaymentMethodDetails { get; set; }
 
         /// <summary>
@@ -443,12 +602,18 @@ public PaymentIntent PaymentIntent
         /// information.
         /// </summary>
         [JsonProperty("radar_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("radar_options")]
+#endif
         public ChargeRadarOptions RadarOptions { get; set; }
 
         /// <summary>
         /// This is the email address that the receipt for this charge was sent to.
         /// </summary>
         [JsonProperty("receipt_email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("receipt_email")]
+#endif
         public string ReceiptEmail { get; set; }
 
         /// <summary>
@@ -456,6 +621,9 @@ public PaymentIntent PaymentIntent
         /// attribute will be <c>null</c> until a receipt has been sent.
         /// </summary>
         [JsonProperty("receipt_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("receipt_number")]
+#endif
         public string ReceiptNumber { get; set; }
 
         /// <summary>
@@ -464,6 +632,9 @@ public PaymentIntent PaymentIntent
         /// the receipt will be stylized as an Invoice receipt.
         /// </summary>
         [JsonProperty("receipt_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("receipt_url")]
+#endif
         public string ReceiptUrl { get; set; }
 
         /// <summary>
@@ -471,12 +642,18 @@ public PaymentIntent PaymentIntent
         /// this attribute will still be false.
         /// </summary>
         [JsonProperty("refunded")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refunded")]
+#endif
         public bool Refunded { get; set; }
 
         /// <summary>
         /// A list of refunds that have been applied to the charge.
         /// </summary>
         [JsonProperty("refunds")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refunds")]
+#endif
         public StripeList<Refund> Refunds { get; set; }
 
         #region Expandable Review
@@ -486,6 +663,9 @@ public PaymentIntent PaymentIntent
         /// ID of the review associated with this charge if one exists.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ReviewId
         {
             get => this.InternalReview?.Id;
@@ -499,6 +679,9 @@ public string ReviewId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Review Review
         {
             get => this.InternalReview?.ExpandedObject;
@@ -507,6 +690,10 @@ public Review Review
 
         [JsonProperty("review")]
         [JsonConverter(typeof(ExpandableFieldConverter<Review>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("review")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Review>))]
+#endif
         internal ExpandableField<Review> InternalReview { get; set; }
         #endregion
 
@@ -514,6 +701,9 @@ public Review Review
         /// Shipping information for the charge.
         /// </summary>
         [JsonProperty("shipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping")]
+#endif
         public Shipping Shipping { get; set; }
 
         /// <summary>
@@ -523,6 +713,9 @@ public Review Review
         /// </summary>
         [JsonProperty("source")]
         [JsonConverter(typeof(StripeObjectConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source")]
+#endif
         public IPaymentSource Source { get; set; }
 
         #region Expandable SourceTransfer
@@ -534,6 +727,9 @@ public Review Review
         /// Connect documentation</a> for details.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string SourceTransferId
         {
             get => this.InternalSourceTransfer?.Id;
@@ -549,6 +745,9 @@ public string SourceTransferId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Transfer SourceTransfer
         {
             get => this.InternalSourceTransfer?.ExpandedObject;
@@ -557,6 +756,10 @@ public Transfer SourceTransfer
 
         [JsonProperty("source_transfer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Transfer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source_transfer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Transfer>))]
+#endif
         internal ExpandableField<Transfer> InternalSourceTransfer { get; set; }
         #endregion
 
@@ -571,6 +774,9 @@ public Transfer SourceTransfer
         /// <c>statement_descriptor_suffix</c>, in which case this value is used as the suffix.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
 
         /// <summary>
@@ -581,6 +787,9 @@ public Transfer SourceTransfer
         /// the account's statement descriptor.
         /// </summary>
         [JsonProperty("statement_descriptor_suffix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_suffix")]
+#endif
         public string StatementDescriptorSuffix { get; set; }
 
         /// <summary>
@@ -588,6 +797,9 @@ public Transfer SourceTransfer
         /// One of: <c>failed</c>, <c>pending</c>, or <c>succeeded</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         #region Expandable Transfer
@@ -598,6 +810,9 @@ public Transfer SourceTransfer
         /// created using the <c>destination</c> parameter).
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string TransferId
         {
             get => this.InternalTransfer?.Id;
@@ -612,6 +827,9 @@ public string TransferId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Transfer Transfer
         {
             get => this.InternalTransfer?.ExpandedObject;
@@ -620,6 +838,10 @@ public Transfer Transfer
 
         [JsonProperty("transfer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Transfer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Transfer>))]
+#endif
         internal ExpandableField<Transfer> InternalTransfer { get; set; }
         #endregion
 
@@ -629,6 +851,9 @@ public Transfer Transfer
         /// the Connect documentation</a> for details.
         /// </summary>
         [JsonProperty("transfer_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_data")]
+#endif
         public ChargeTransferData TransferData { get; set; }
 
         /// <summary>
@@ -637,6 +862,9 @@ public Transfer Transfer
         /// documentation</a> for details.
         /// </summary>
         [JsonProperty("transfer_group")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_group")]
+#endif
         public string TransferGroup { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargeBillingDetails.cs b/src/Stripe.net/Entities/Charges/ChargeBillingDetails.cs
index 78ead560cb..7bc3476a0c 100644
--- a/src/Stripe.net/Entities/Charges/ChargeBillingDetails.cs
+++ b/src/Stripe.net/Entities/Charges/ChargeBillingDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargeBillingDetails : StripeEntity<ChargeBillingDetails>
     {
@@ -9,24 +12,36 @@ public class ChargeBillingDetails : StripeEntity<ChargeBillingDetails>
         /// Billing address.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public Address Address { get; set; }
 
         /// <summary>
         /// Email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// Full name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// Billing phone number (including extension).
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargeFraudDetails.cs b/src/Stripe.net/Entities/Charges/ChargeFraudDetails.cs
index 7f76d07ead..bf84940c13 100644
--- a/src/Stripe.net/Entities/Charges/ChargeFraudDetails.cs
+++ b/src/Stripe.net/Entities/Charges/ChargeFraudDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargeFraudDetails : StripeEntity<ChargeFraudDetails>
     {
@@ -9,6 +12,9 @@ public class ChargeFraudDetails : StripeEntity<ChargeFraudDetails>
         /// Assessments from Stripe. If set, the value is <c>fraudulent</c>.
         /// </summary>
         [JsonProperty("stripe_report")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("stripe_report")]
+#endif
         public string StripeReport { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class ChargeFraudDetails : StripeEntity<ChargeFraudDetails>
         /// <c>fraudulent</c>.
         /// </summary>
         [JsonProperty("user_report")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_report")]
+#endif
         public string UserReport { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargeLevel3.cs b/src/Stripe.net/Entities/Charges/ChargeLevel3.cs
index b0d5906173..2089ffaf5f 100644
--- a/src/Stripe.net/Entities/Charges/ChargeLevel3.cs
+++ b/src/Stripe.net/Entities/Charges/ChargeLevel3.cs
@@ -3,25 +3,46 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargeLevel3 : StripeEntity<ChargeLevel3>
     {
         [JsonProperty("customer_reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_reference")]
+#endif
         public string CustomerReference { get; set; }
 
         [JsonProperty("line_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line_items")]
+#endif
         public List<ChargeLevel3LineItem> LineItems { get; set; }
 
         [JsonProperty("merchant_reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("merchant_reference")]
+#endif
         public string MerchantReference { get; set; }
 
         [JsonProperty("shipping_address_zip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_address_zip")]
+#endif
         public string ShippingAddressZip { get; set; }
 
         [JsonProperty("shipping_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_amount")]
+#endif
         public long ShippingAmount { get; set; }
 
         [JsonProperty("shipping_from_zip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_from_zip")]
+#endif
         public string ShippingFromZip { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargeLevel3LineItem.cs b/src/Stripe.net/Entities/Charges/ChargeLevel3LineItem.cs
index 127bc7584a..a582b62c15 100644
--- a/src/Stripe.net/Entities/Charges/ChargeLevel3LineItem.cs
+++ b/src/Stripe.net/Entities/Charges/ChargeLevel3LineItem.cs
@@ -1,25 +1,46 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargeLevel3LineItem : StripeEntity<ChargeLevel3LineItem>
     {
         [JsonProperty("discount_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount_amount")]
+#endif
         public long? DiscountAmount { get; set; }
 
         [JsonProperty("product_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_code")]
+#endif
         public string ProductCode { get; set; }
 
         [JsonProperty("product_description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_description")]
+#endif
         public string ProductDescription { get; set; }
 
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         [JsonProperty("tax_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_amount")]
+#endif
         public long? TaxAmount { get; set; }
 
         [JsonProperty("unit_cost")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_cost")]
+#endif
         public long? UnitCost { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargeOutcome.cs b/src/Stripe.net/Entities/Charges/ChargeOutcome.cs
index 53eafaa22f..d0b3451eb0 100644
--- a/src/Stripe.net/Entities/Charges/ChargeOutcome.cs
+++ b/src/Stripe.net/Entities/Charges/ChargeOutcome.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class ChargeOutcome : StripeEntity<ChargeOutcome>
     {
         /// <summary>
@@ -13,6 +19,9 @@ public class ChargeOutcome : StripeEntity<ChargeOutcome>
         /// One of: <c>confirm_card_data</c>, <c>do_not_try_again</c>, or <c>try_again_later</c>.
         /// </summary>
         [JsonProperty("advice_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("advice_code")]
+#endif
         public string AdviceCode { get; set; }
 
         /// <summary>
@@ -20,6 +29,9 @@ public class ChargeOutcome : StripeEntity<ChargeOutcome>
         /// by the network on how to proceed with an error.
         /// </summary>
         [JsonProperty("network_advice_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network_advice_code")]
+#endif
         public string NetworkAdviceCode { get; set; }
 
         /// <summary>
@@ -27,6 +39,9 @@ public class ChargeOutcome : StripeEntity<ChargeOutcome>
         /// indicates the reason the authorization failed.
         /// </summary>
         [JsonProperty("network_decline_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network_decline_code")]
+#endif
         public string NetworkDeclineCode { get; set; }
 
         /// <summary>
@@ -37,6 +52,9 @@ public class ChargeOutcome : StripeEntity<ChargeOutcome>
         /// bank authorization, and may temporarily appear as "pending" on a cardholder's statement.
         /// </summary>
         [JsonProperty("network_status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network_status")]
+#endif
         public string NetworkStatus { get; set; }
 
         /// <summary>
@@ -48,6 +66,9 @@ public class ChargeOutcome : StripeEntity<ChargeOutcome>
         /// href="https://stripe.com/docs/declines">understanding declines</a> for more details.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
 
         /// <summary>
@@ -58,6 +79,9 @@ public class ChargeOutcome : StripeEntity<ChargeOutcome>
         /// will have the value <c>unknown</c>. This field is only available with Radar.
         /// </summary>
         [JsonProperty("risk_level")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("risk_level")]
+#endif
         public string RiskLevel { get; set; }
 
         /// <summary>
@@ -67,6 +91,9 @@ public class ChargeOutcome : StripeEntity<ChargeOutcome>
         /// field will not be present. This field is only available with Radar for Fraud Teams.
         /// </summary>
         [JsonProperty("risk_score")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("risk_score")]
+#endif
         public long RiskScore { get; set; }
 
         #region Expandable Rule
@@ -76,6 +103,9 @@ public class ChargeOutcome : StripeEntity<ChargeOutcome>
         /// The ID of the Radar rule that matched the payment, if applicable.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string RuleId
         {
             get => this.InternalRule?.Id;
@@ -89,6 +119,9 @@ public string RuleId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Radar.Rule Rule
         {
             get => this.InternalRule?.ExpandedObject;
@@ -97,6 +130,10 @@ public Radar.Rule Rule
 
         [JsonProperty("rule")]
         [JsonConverter(typeof(ExpandableFieldConverter<Radar.Rule>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("rule")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Radar.Rule>))]
+#endif
         internal ExpandableField<Radar.Rule> InternalRule { get; set; }
         #endregion
 
@@ -105,6 +142,9 @@ public Radar.Rule Rule
         /// recipient of the payment), not your customer.
         /// </summary>
         [JsonProperty("seller_message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("seller_message")]
+#endif
         public string SellerMessage { get; set; }
 
         /// <summary>
@@ -114,6 +154,9 @@ public Radar.Rule Rule
         /// href="https://stripe.com/docs/radar/reviews">Radar reviews</a> for details.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetails.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetails.cs
index cda6875333..a231ab7ed7 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetails.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetails.cs
@@ -2,145 +2,286 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetails : StripeEntity<ChargePaymentMethodDetails>
     {
         [JsonProperty("ach_credit_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ach_credit_transfer")]
+#endif
         public ChargePaymentMethodDetailsAchCreditTransfer AchCreditTransfer { get; set; }
 
         [JsonProperty("ach_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ach_debit")]
+#endif
         public ChargePaymentMethodDetailsAchDebit AchDebit { get; set; }
 
         [JsonProperty("acss_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acss_debit")]
+#endif
         public ChargePaymentMethodDetailsAcssDebit AcssDebit { get; set; }
 
         [JsonProperty("affirm")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("affirm")]
+#endif
         public ChargePaymentMethodDetailsAffirm Affirm { get; set; }
 
         [JsonProperty("afterpay_clearpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("afterpay_clearpay")]
+#endif
         public ChargePaymentMethodDetailsAfterpayClearpay AfterpayClearpay { get; set; }
 
         [JsonProperty("alipay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alipay")]
+#endif
         public ChargePaymentMethodDetailsAlipay Alipay { get; set; }
 
         [JsonProperty("alma")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alma")]
+#endif
         public ChargePaymentMethodDetailsAlma Alma { get; set; }
 
         [JsonProperty("amazon_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amazon_pay")]
+#endif
         public ChargePaymentMethodDetailsAmazonPay AmazonPay { get; set; }
 
         [JsonProperty("au_becs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("au_becs_debit")]
+#endif
         public ChargePaymentMethodDetailsAuBecsDebit AuBecsDebit { get; set; }
 
         [JsonProperty("bacs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bacs_debit")]
+#endif
         public ChargePaymentMethodDetailsBacsDebit BacsDebit { get; set; }
 
         [JsonProperty("bancontact")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bancontact")]
+#endif
         public ChargePaymentMethodDetailsBancontact Bancontact { get; set; }
 
         [JsonProperty("blik")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("blik")]
+#endif
         public ChargePaymentMethodDetailsBlik Blik { get; set; }
 
         [JsonProperty("boleto")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("boleto")]
+#endif
         public ChargePaymentMethodDetailsBoleto Boleto { get; set; }
 
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public ChargePaymentMethodDetailsCard Card { get; set; }
 
         [JsonProperty("card_present")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_present")]
+#endif
         public ChargePaymentMethodDetailsCardPresent CardPresent { get; set; }
 
         [JsonProperty("cashapp")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cashapp")]
+#endif
         public ChargePaymentMethodDetailsCashapp Cashapp { get; set; }
 
         [JsonProperty("customer_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_balance")]
+#endif
         public ChargePaymentMethodDetailsCustomerBalance CustomerBalance { get; set; }
 
         [JsonProperty("eps")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eps")]
+#endif
         public ChargePaymentMethodDetailsEps Eps { get; set; }
 
         [JsonProperty("fpx")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fpx")]
+#endif
         public ChargePaymentMethodDetailsFpx Fpx { get; set; }
 
         [JsonProperty("giropay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("giropay")]
+#endif
         public ChargePaymentMethodDetailsGiropay Giropay { get; set; }
 
         [JsonProperty("grabpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("grabpay")]
+#endif
         public ChargePaymentMethodDetailsGrabpay Grabpay { get; set; }
 
         [JsonProperty("ideal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ideal")]
+#endif
         public ChargePaymentMethodDetailsIdeal Ideal { get; set; }
 
         [JsonProperty("interac_present")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interac_present")]
+#endif
         public ChargePaymentMethodDetailsInteracPresent InteracPresent { get; set; }
 
         [JsonProperty("kakao_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kakao_pay")]
+#endif
         public ChargePaymentMethodDetailsKakaoPay KakaoPay { get; set; }
 
         [JsonProperty("klarna")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("klarna")]
+#endif
         public ChargePaymentMethodDetailsKlarna Klarna { get; set; }
 
         [JsonProperty("konbini")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("konbini")]
+#endif
         public ChargePaymentMethodDetailsKonbini Konbini { get; set; }
 
         [JsonProperty("kr_card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kr_card")]
+#endif
         public ChargePaymentMethodDetailsKrCard KrCard { get; set; }
 
         [JsonProperty("link")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("link")]
+#endif
         public ChargePaymentMethodDetailsLink Link { get; set; }
 
         [JsonProperty("mobilepay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mobilepay")]
+#endif
         public ChargePaymentMethodDetailsMobilepay Mobilepay { get; set; }
 
         [JsonProperty("multibanco")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("multibanco")]
+#endif
         public ChargePaymentMethodDetailsMultibanco Multibanco { get; set; }
 
         [JsonProperty("naver_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("naver_pay")]
+#endif
         public ChargePaymentMethodDetailsNaverPay NaverPay { get; set; }
 
         [JsonProperty("oxxo")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("oxxo")]
+#endif
         public ChargePaymentMethodDetailsOxxo Oxxo { get; set; }
 
         [JsonProperty("p24")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("p24")]
+#endif
         public ChargePaymentMethodDetailsP24 P24 { get; set; }
 
         [JsonProperty("pay_by_bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_by_bank")]
+#endif
         public ChargePaymentMethodDetailsPayByBank PayByBank { get; set; }
 
         [JsonProperty("payco")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payco")]
+#endif
         public ChargePaymentMethodDetailsPayco Payco { get; set; }
 
         [JsonProperty("paynow")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paynow")]
+#endif
         public ChargePaymentMethodDetailsPaynow Paynow { get; set; }
 
         [JsonProperty("paypal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paypal")]
+#endif
         public ChargePaymentMethodDetailsPaypal Paypal { get; set; }
 
         [JsonProperty("pix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pix")]
+#endif
         public ChargePaymentMethodDetailsPix Pix { get; set; }
 
         [JsonProperty("promptpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promptpay")]
+#endif
         public ChargePaymentMethodDetailsPromptpay Promptpay { get; set; }
 
         [JsonProperty("revolut_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("revolut_pay")]
+#endif
         public ChargePaymentMethodDetailsRevolutPay RevolutPay { get; set; }
 
         [JsonProperty("samsung_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("samsung_pay")]
+#endif
         public ChargePaymentMethodDetailsSamsungPay SamsungPay { get; set; }
 
         [JsonProperty("sepa_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_debit")]
+#endif
         public ChargePaymentMethodDetailsSepaDebit SepaDebit { get; set; }
 
         [JsonProperty("sofort")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sofort")]
+#endif
         public ChargePaymentMethodDetailsSofort Sofort { get; set; }
 
         [JsonProperty("stripe_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("stripe_account")]
+#endif
         public ChargePaymentMethodDetailsStripeAccount StripeAccount { get; set; }
 
         [JsonProperty("swish")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("swish")]
+#endif
         public ChargePaymentMethodDetailsSwish Swish { get; set; }
 
         [JsonProperty("twint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("twint")]
+#endif
         public ChargePaymentMethodDetailsTwint Twint { get; set; }
 
         /// <summary>
@@ -152,18 +293,33 @@ public class ChargePaymentMethodDetails : StripeEntity<ChargePaymentMethodDetail
         /// specific to the payment method.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public ChargePaymentMethodDetailsUsBankAccount UsBankAccount { get; set; }
 
         [JsonProperty("wechat")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wechat")]
+#endif
         public ChargePaymentMethodDetailsWechat Wechat { get; set; }
 
         [JsonProperty("wechat_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wechat_pay")]
+#endif
         public ChargePaymentMethodDetailsWechatPay WechatPay { get; set; }
 
         [JsonProperty("zip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("zip")]
+#endif
         public ChargePaymentMethodDetailsZip Zip { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAchCreditTransfer.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAchCreditTransfer.cs
index 813a9fbc79..46d8e201b0 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAchCreditTransfer.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAchCreditTransfer.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsAchCreditTransfer : StripeEntity<ChargePaymentMethodDetailsAchCreditTransfer>
     {
@@ -9,24 +12,36 @@ public class ChargePaymentMethodDetailsAchCreditTransfer : StripeEntity<ChargePa
         /// Account number to transfer funds to.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
         /// Name of the bank associated with the routing number.
         /// </summary>
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         /// <summary>
         /// Routing transit number for the bank account to transfer funds to.
         /// </summary>
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
 
         /// <summary>
         /// SWIFT code of the bank associated with the routing number.
         /// </summary>
         [JsonProperty("swift_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("swift_code")]
+#endif
         public string SwiftCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAchDebit.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAchDebit.cs
index 0218ecbfe1..436fe3eba0 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAchDebit.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAchDebit.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsAchDebit : StripeEntity<ChargePaymentMethodDetailsAchDebit>
     {
@@ -11,18 +14,27 @@ public class ChargePaymentMethodDetailsAchDebit : StripeEntity<ChargePaymentMeth
         /// One of: <c>company</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("account_holder_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_type")]
+#endif
         public string AccountHolderType { get; set; }
 
         /// <summary>
         /// Name of the bank associated with the bank account.
         /// </summary>
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         /// <summary>
         /// Two-letter ISO code representing the country the bank account is located in.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -30,18 +42,27 @@ public class ChargePaymentMethodDetailsAchDebit : StripeEntity<ChargePaymentMeth
         /// whether two bank accounts are the same.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
         /// Last four digits of the bank account number.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
         /// Routing transit number of the bank account.
         /// </summary>
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAcssDebit.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAcssDebit.cs
index 5d10921404..3dc2c23517 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAcssDebit.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAcssDebit.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsAcssDebit : StripeEntity<ChargePaymentMethodDetailsAcssDebit>
     {
@@ -9,6 +12,9 @@ public class ChargePaymentMethodDetailsAcssDebit : StripeEntity<ChargePaymentMet
         /// Name of the bank associated with the bank account.
         /// </summary>
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         /// <summary>
@@ -16,30 +22,45 @@ public class ChargePaymentMethodDetailsAcssDebit : StripeEntity<ChargePaymentMet
         /// whether two bank accounts are the same.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
         /// Institution number of the bank account.
         /// </summary>
         [JsonProperty("institution_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("institution_number")]
+#endif
         public string InstitutionNumber { get; set; }
 
         /// <summary>
         /// Last four digits of the bank account number.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
         /// ID of the mandate used to make this payment.
         /// </summary>
         [JsonProperty("mandate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate")]
+#endif
         public string Mandate { get; set; }
 
         /// <summary>
         /// Transit number of the bank account.
         /// </summary>
         [JsonProperty("transit_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transit_number")]
+#endif
         public string TransitNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAffirm.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAffirm.cs
index 5aa8f2fe7a..e26fe02920 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAffirm.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAffirm.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsAffirm : StripeEntity<ChargePaymentMethodDetailsAffirm>
     {
@@ -9,6 +12,9 @@ public class ChargePaymentMethodDetailsAffirm : StripeEntity<ChargePaymentMethod
         /// The Affirm transaction ID associated with this payment.
         /// </summary>
         [JsonProperty("transaction_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_id")]
+#endif
         public string TransactionId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAfterpayClearpay.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAfterpayClearpay.cs
index 7d605fd9a7..399edee52e 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAfterpayClearpay.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAfterpayClearpay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsAfterpayClearpay : StripeEntity<ChargePaymentMethodDetailsAfterpayClearpay>
     {
@@ -9,12 +12,18 @@ public class ChargePaymentMethodDetailsAfterpayClearpay : StripeEntity<ChargePay
         /// The Afterpay order ID associated with this payment intent.
         /// </summary>
         [JsonProperty("order_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("order_id")]
+#endif
         public string OrderId { get; set; }
 
         /// <summary>
         /// Order identifier shown to the merchant in Afterpay’s online portal.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAlipay.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAlipay.cs
index 7fcb93fb44..7f3c38915f 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAlipay.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAlipay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsAlipay : StripeEntity<ChargePaymentMethodDetailsAlipay>
     {
@@ -10,6 +13,9 @@ public class ChargePaymentMethodDetailsAlipay : StripeEntity<ChargePaymentMethod
         /// whether two Alipay accounts are the same.
         /// </summary>
         [JsonProperty("buyer_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("buyer_id")]
+#endif
         public string BuyerId { get; set; }
 
         /// <summary>
@@ -17,12 +23,18 @@ public class ChargePaymentMethodDetailsAlipay : StripeEntity<ChargePaymentMethod
         /// whether two Alipay accounts are the same.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
         /// Transaction ID of this particular Alipay transaction.
         /// </summary>
         [JsonProperty("transaction_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_id")]
+#endif
         public string TransactionId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAmazonPay.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAmazonPay.cs
index 41cd52feb8..faab6a0dcb 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAmazonPay.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAmazonPay.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsAmazonPay : StripeEntity<ChargePaymentMethodDetailsAmazonPay>
     {
         [JsonProperty("funding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding")]
+#endif
         public ChargePaymentMethodDetailsAmazonPayFunding Funding { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAmazonPayFunding.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAmazonPayFunding.cs
index 2b54c00964..10533d93d8 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAmazonPayFunding.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAmazonPayFunding.cs
@@ -2,16 +2,25 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsAmazonPayFunding : StripeEntity<ChargePaymentMethodDetailsAmazonPayFunding>
     {
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public ChargePaymentMethodDetailsAmazonPayFundingCard Card { get; set; }
 
         /// <summary>
         /// funding type of the underlying payment method.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAmazonPayFundingCard.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAmazonPayFundingCard.cs
index c5b6a9ca17..b88e5858b5 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAmazonPayFundingCard.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAmazonPayFundingCard.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsAmazonPayFundingCard : StripeEntity<ChargePaymentMethodDetailsAmazonPayFundingCard>
     {
@@ -11,6 +14,9 @@ public class ChargePaymentMethodDetailsAmazonPayFundingCard : StripeEntity<Charg
         /// <c>unknown</c>.
         /// </summary>
         [JsonProperty("brand")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brand")]
+#endif
         public string Brand { get; set; }
 
         /// <summary>
@@ -18,18 +24,27 @@ public class ChargePaymentMethodDetailsAmazonPayFundingCard : StripeEntity<Charg
         /// to get a sense of the international breakdown of cards you've collected.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
         /// Two-digit number representing the card's expiration month.
         /// </summary>
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public long? ExpMonth { get; set; }
 
         /// <summary>
         /// Four-digit number representing the card's expiration year.
         /// </summary>
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public long? ExpYear { get; set; }
 
         /// <summary>
@@ -37,12 +52,18 @@ public class ChargePaymentMethodDetailsAmazonPayFundingCard : StripeEntity<Charg
         /// <c>unknown</c>.
         /// </summary>
         [JsonProperty("funding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding")]
+#endif
         public string Funding { get; set; }
 
         /// <summary>
         /// The last four digits of the card.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAuBecsDebit.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAuBecsDebit.cs
index 1655e74925..159a8c4a93 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAuBecsDebit.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsAuBecsDebit.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsAuBecsDebit : StripeEntity<ChargePaymentMethodDetailsAuBecsDebit>
     {
@@ -9,6 +12,9 @@ public class ChargePaymentMethodDetailsAuBecsDebit : StripeEntity<ChargePaymentM
         /// Bank-State-Branch number of the bank account.
         /// </summary>
         [JsonProperty("bsb_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bsb_number")]
+#endif
         public string BsbNumber { get; set; }
 
         /// <summary>
@@ -16,18 +22,27 @@ public class ChargePaymentMethodDetailsAuBecsDebit : StripeEntity<ChargePaymentM
         /// whether two bank accounts are the same.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
         /// Last four digits of the bank account number.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
         /// ID of the mandate used to make this payment.
         /// </summary>
         [JsonProperty("mandate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate")]
+#endif
         public string Mandate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsBacsDebit.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsBacsDebit.cs
index 8aa31eed20..81b9c06431 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsBacsDebit.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsBacsDebit.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsBacsDebit : StripeEntity<ChargePaymentMethodDetailsBacsDebit>
     {
@@ -10,24 +13,36 @@ public class ChargePaymentMethodDetailsBacsDebit : StripeEntity<ChargePaymentMet
         /// whether two bank accounts are the same.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
         /// Last four digits of the bank account number.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
         /// ID of the mandate used to make this payment.
         /// </summary>
         [JsonProperty("mandate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate")]
+#endif
         public string Mandate { get; set; }
 
         /// <summary>
         /// Sort code of the bank account. (e.g., <c>10-20-30</c>).
         /// </summary>
         [JsonProperty("sort_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sort_code")]
+#endif
         public string SortCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsBancontact.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsBancontact.cs
index bdb164c018..286139eef9 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsBancontact.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsBancontact.cs
@@ -3,25 +3,40 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class ChargePaymentMethodDetailsBancontact : StripeEntity<ChargePaymentMethodDetailsBancontact>
     {
         /// <summary>
         /// Bank code of bank associated with the bank account.
         /// </summary>
         [JsonProperty("bank_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_code")]
+#endif
         public string BankCode { get; set; }
 
         /// <summary>
         /// Name of the bank associated with the bank account.
         /// </summary>
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         /// <summary>
         /// Bank Identifier Code of the bank associated with the bank account.
         /// </summary>
         [JsonProperty("bic")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bic")]
+#endif
         public string Bic { get; set; }
 
         #region Expandable GeneratedSepaDebit
@@ -31,6 +46,9 @@ public class ChargePaymentMethodDetailsBancontact : StripeEntity<ChargePaymentMe
         /// The ID of the SEPA Direct Debit PaymentMethod which was generated by this Charge.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string GeneratedSepaDebitId
         {
             get => this.InternalGeneratedSepaDebit?.Id;
@@ -44,6 +62,9 @@ public string GeneratedSepaDebitId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PaymentMethod GeneratedSepaDebit
         {
             get => this.InternalGeneratedSepaDebit?.ExpandedObject;
@@ -52,6 +73,10 @@ public PaymentMethod GeneratedSepaDebit
 
         [JsonProperty("generated_sepa_debit")]
         [JsonConverter(typeof(ExpandableFieldConverter<PaymentMethod>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("generated_sepa_debit")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PaymentMethod>))]
+#endif
         internal ExpandableField<PaymentMethod> InternalGeneratedSepaDebit { get; set; }
         #endregion
 
@@ -62,6 +87,9 @@ public PaymentMethod GeneratedSepaDebit
         /// The mandate for the SEPA Direct Debit PaymentMethod which was generated by this Charge.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string GeneratedSepaDebitMandateId
         {
             get => this.InternalGeneratedSepaDebitMandate?.Id;
@@ -75,6 +103,9 @@ public string GeneratedSepaDebitMandateId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Mandate GeneratedSepaDebitMandate
         {
             get => this.InternalGeneratedSepaDebitMandate?.ExpandedObject;
@@ -83,6 +114,10 @@ public Mandate GeneratedSepaDebitMandate
 
         [JsonProperty("generated_sepa_debit_mandate")]
         [JsonConverter(typeof(ExpandableFieldConverter<Mandate>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("generated_sepa_debit_mandate")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Mandate>))]
+#endif
         internal ExpandableField<Mandate> InternalGeneratedSepaDebitMandate { get; set; }
         #endregion
 
@@ -90,6 +125,9 @@ public Mandate GeneratedSepaDebitMandate
         /// Last four characters of the IBAN.
         /// </summary>
         [JsonProperty("iban_last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iban_last4")]
+#endif
         public string IbanLast4 { get; set; }
 
         /// <summary>
@@ -98,6 +136,9 @@ public Mandate GeneratedSepaDebitMandate
         /// One of: <c>de</c>, <c>en</c>, <c>fr</c>, or <c>nl</c>.
         /// </summary>
         [JsonProperty("preferred_language")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_language")]
+#endif
         public string PreferredLanguage { get; set; }
 
         /// <summary>
@@ -105,6 +146,9 @@ public Mandate GeneratedSepaDebitMandate
         /// supported) at the time of authorization or settlement. They cannot be set or mutated.
         /// </summary>
         [JsonProperty("verified_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verified_name")]
+#endif
         public string VerifiedName { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsBitcoin.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsBitcoin.cs
index 69969c793e..06397073ba 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsBitcoin.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsBitcoin.cs
@@ -1,25 +1,46 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsBitcoin : StripeEntity<ChargePaymentMethodDetailsBitcoin>
     {
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public string Address { get; set; }
 
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         [JsonProperty("amount_charged")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_charged")]
+#endif
         public long? AmountCharged { get; set; }
 
         [JsonProperty("amount_received")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_received")]
+#endif
         public long? AmountReceived { get; set; }
 
         [JsonProperty("amount_returned")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_returned")]
+#endif
         public long? AmountReturned { get; set; }
 
         [JsonProperty("refund_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_address")]
+#endif
         public string RefundAddress { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsBlik.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsBlik.cs
index 2ffd5de339..022e486370 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsBlik.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsBlik.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsBlik : StripeEntity<ChargePaymentMethodDetailsBlik>
     {
@@ -9,6 +12,9 @@ public class ChargePaymentMethodDetailsBlik : StripeEntity<ChargePaymentMethodDe
         /// A unique and immutable identifier assigned by BLIK to every buyer.
         /// </summary>
         [JsonProperty("buyer_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("buyer_id")]
+#endif
         public string BuyerId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsBoleto.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsBoleto.cs
index c32714ee21..b44989a447 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsBoleto.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsBoleto.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsBoleto : StripeEntity<ChargePaymentMethodDetailsBoleto>
     {
@@ -10,6 +13,9 @@ public class ChargePaymentMethodDetailsBoleto : StripeEntity<ChargePaymentMethod
         /// consumers).
         /// </summary>
         [JsonProperty("tax_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_id")]
+#endif
         public string TaxId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCard.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCard.cs
index 2d01e87b4a..29f7c03afb 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCard.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCard.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsCard : StripeEntity<ChargePaymentMethodDetailsCard>
     {
@@ -11,12 +14,18 @@ public class ChargePaymentMethodDetailsCard : StripeEntity<ChargePaymentMethodDe
         /// The authorized amount.
         /// </summary>
         [JsonProperty("amount_authorized")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_authorized")]
+#endif
         public long? AmountAuthorized { get; set; }
 
         /// <summary>
         /// Authorization code on the charge.
         /// </summary>
         [JsonProperty("authorization_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("authorization_code")]
+#endif
         public string AuthorizationCode { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class ChargePaymentMethodDetailsCard : StripeEntity<ChargePaymentMethodDe
         /// <c>unknown</c>.
         /// </summary>
         [JsonProperty("brand")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brand")]
+#endif
         public string Brand { get; set; }
 
         /// <summary>
@@ -33,12 +45,19 @@ public class ChargePaymentMethodDetailsCard : StripeEntity<ChargePaymentMethodDe
         /// </summary>
         [JsonProperty("capture_before")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_before")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime CaptureBefore { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// Check results by Card networks on Card address and CVC at time of payment.
         /// </summary>
         [JsonProperty("checks")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("checks")]
+#endif
         public ChargePaymentMethodDetailsCardChecks Checks { get; set; }
 
         /// <summary>
@@ -46,6 +65,9 @@ public class ChargePaymentMethodDetailsCard : StripeEntity<ChargePaymentMethodDe
         /// to get a sense of the international breakdown of cards you've collected.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -53,21 +75,33 @@ public class ChargePaymentMethodDetailsCard : StripeEntity<ChargePaymentMethodDe
         /// only and not typically available in standard API requests.).
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// Two-digit number representing the card's expiration month.
         /// </summary>
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public long ExpMonth { get; set; }
 
         /// <summary>
         /// Four-digit number representing the card's expiration year.
         /// </summary>
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public long ExpYear { get; set; }
 
         [JsonProperty("extended_authorization")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("extended_authorization")]
+#endif
         public ChargePaymentMethodDetailsCardExtendedAuthorization ExtendedAuthorization { get; set; }
 
         /// <summary>
@@ -80,6 +114,9 @@ public class ChargePaymentMethodDetailsCard : StripeEntity<ChargePaymentMethodDe
         /// fingerprints for the same card---one for India and one for the rest of the world.</em>.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
@@ -87,6 +124,9 @@ public class ChargePaymentMethodDetailsCard : StripeEntity<ChargePaymentMethodDe
         /// <c>unknown</c>.
         /// </summary>
         [JsonProperty("funding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding")]
+#endif
         public string Funding { get; set; }
 
         /// <summary>
@@ -94,9 +134,15 @@ public class ChargePaymentMethodDetailsCard : StripeEntity<ChargePaymentMethodDe
         /// available in standard API requests.).
         /// </summary>
         [JsonProperty("iin")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iin")]
+#endif
         public string Iin { get; set; }
 
         [JsonProperty("incremental_authorization")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("incremental_authorization")]
+#endif
         public ChargePaymentMethodDetailsCardIncrementalAuthorization IncrementalAuthorization { get; set; }
 
         /// <summary>
@@ -106,6 +152,9 @@ public class ChargePaymentMethodDetailsCard : StripeEntity<ChargePaymentMethodDe
         /// href="https://stripe.com/docs/payments/installments">installments integration guide</a>.
         /// </summary>
         [JsonProperty("installments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("installments")]
+#endif
         public ChargePaymentMethodDetailsCardInstallments Installments { get; set; }
 
         /// <summary>
@@ -113,27 +162,42 @@ public class ChargePaymentMethodDetailsCard : StripeEntity<ChargePaymentMethodDe
         /// in standard API requests.).
         /// </summary>
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public string Issuer { get; set; }
 
         /// <summary>
         /// The last four digits of the card.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
         /// ID of the mandate used to make this payment or created by it.
         /// </summary>
         [JsonProperty("mandate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate")]
+#endif
         public string Mandate { get; set; }
 
         /// <summary>
         /// True if this payment was marked as MOTO and out of scope for SCA.
         /// </summary>
         [JsonProperty("moto")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("moto")]
+#endif
         public bool? Moto { get; set; }
 
         [JsonProperty("multicapture")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("multicapture")]
+#endif
         public ChargePaymentMethodDetailsCardMulticapture Multicapture { get; set; }
 
         /// <summary>
@@ -143,6 +207,9 @@ public class ChargePaymentMethodDetailsCard : StripeEntity<ChargePaymentMethodDe
         /// <c>visa</c>, or <c>unknown</c>.
         /// </summary>
         [JsonProperty("network")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network")]
+#endif
         public string Network { get; set; }
 
         /// <summary>
@@ -150,6 +217,9 @@ public class ChargePaymentMethodDetailsCard : StripeEntity<ChargePaymentMethodDe
         /// token credentials.
         /// </summary>
         [JsonProperty("network_token")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network_token")]
+#endif
         public ChargePaymentMethodDetailsCardNetworkToken NetworkToken { get; set; }
 
         /// <summary>
@@ -159,9 +229,15 @@ public class ChargePaymentMethodDetailsCard : StripeEntity<ChargePaymentMethodDe
         /// network in the authorization response, and null otherwise.
         /// </summary>
         [JsonProperty("network_transaction_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network_transaction_id")]
+#endif
         public string NetworkTransactionId { get; set; }
 
         [JsonProperty("overcapture")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overcapture")]
+#endif
         public ChargePaymentMethodDetailsCardOvercapture Overcapture { get; set; }
 
         /// <summary>
@@ -169,18 +245,27 @@ public class ChargePaymentMethodDetailsCard : StripeEntity<ChargePaymentMethodDe
         /// One of: <c>regulated</c>, or <c>unregulated</c>.
         /// </summary>
         [JsonProperty("regulated_status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("regulated_status")]
+#endif
         public string RegulatedStatus { get; set; }
 
         /// <summary>
         /// Populated if this transaction used 3D Secure authentication.
         /// </summary>
         [JsonProperty("three_d_secure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("three_d_secure")]
+#endif
         public ChargePaymentMethodDetailsCardThreeDSecure ThreeDSecure { get; set; }
 
         /// <summary>
         /// If this Card is part of a card wallet, this contains the details of the card wallet.
         /// </summary>
         [JsonProperty("wallet")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wallet")]
+#endif
         public ChargePaymentMethodDetailsCardWallet Wallet { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardChecks.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardChecks.cs
index 734d3882dd..06e2d9f912 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardChecks.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardChecks.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsCardChecks : StripeEntity<ChargePaymentMethodDetailsCardChecks>
     {
@@ -10,6 +13,9 @@ public class ChargePaymentMethodDetailsCardChecks : StripeEntity<ChargePaymentMe
         /// <c>unavailable</c>, or <c>unchecked</c>.
         /// </summary>
         [JsonProperty("address_line1_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_line1_check")]
+#endif
         public string AddressLine1Check { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class ChargePaymentMethodDetailsCardChecks : StripeEntity<ChargePaymentMe
         /// <c>fail</c>, <c>unavailable</c>, or <c>unchecked</c>.
         /// </summary>
         [JsonProperty("address_postal_code_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_postal_code_check")]
+#endif
         public string AddressPostalCodeCheck { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class ChargePaymentMethodDetailsCardChecks : StripeEntity<ChargePaymentMe
         /// <c>unavailable</c>, or <c>unchecked</c>.
         /// </summary>
         [JsonProperty("cvc_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cvc_check")]
+#endif
         public string CvcCheck { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardExtendedAuthorization.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardExtendedAuthorization.cs
index 74bae299a2..c64c731907 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardExtendedAuthorization.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardExtendedAuthorization.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsCardExtendedAuthorization : StripeEntity<ChargePaymentMethodDetailsCardExtendedAuthorization>
     {
@@ -11,6 +14,9 @@ public class ChargePaymentMethodDetailsCardExtendedAuthorization : StripeEntity<
         /// One of: <c>disabled</c>, or <c>enabled</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardIncrementalAuthorization.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardIncrementalAuthorization.cs
index b624112434..0233698d85 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardIncrementalAuthorization.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardIncrementalAuthorization.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsCardIncrementalAuthorization : StripeEntity<ChargePaymentMethodDetailsCardIncrementalAuthorization>
     {
@@ -10,6 +13,9 @@ public class ChargePaymentMethodDetailsCardIncrementalAuthorization : StripeEnti
         /// One of: <c>available</c>, or <c>unavailable</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardInstallments.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardInstallments.cs
index 680ae7276f..dcf9a81305 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardInstallments.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardInstallments.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsCardInstallments : StripeEntity<ChargePaymentMethodDetailsCardInstallments>
     {
@@ -9,6 +12,9 @@ public class ChargePaymentMethodDetailsCardInstallments : StripeEntity<ChargePay
         /// Installment plan selected for the payment.
         /// </summary>
         [JsonProperty("plan")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("plan")]
+#endif
         public PaymentIntentPaymentMethodOptionsCardInstallmentsPlan Plan { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardMulticapture.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardMulticapture.cs
index 838b0db1e5..bfe8fff72f 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardMulticapture.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardMulticapture.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsCardMulticapture : StripeEntity<ChargePaymentMethodDetailsCardMulticapture>
     {
@@ -10,6 +13,9 @@ public class ChargePaymentMethodDetailsCardMulticapture : StripeEntity<ChargePay
         /// One of: <c>available</c>, or <c>unavailable</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardNetworkToken.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardNetworkToken.cs
index 3efce276fe..36d7fc7d29 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardNetworkToken.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardNetworkToken.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsCardNetworkToken : StripeEntity<ChargePaymentMethodDetailsCardNetworkToken>
     {
@@ -10,6 +13,9 @@ public class ChargePaymentMethodDetailsCardNetworkToken : StripeEntity<ChargePay
         /// processing the transaction.
         /// </summary>
         [JsonProperty("used")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("used")]
+#endif
         public bool Used { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardOvercapture.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardOvercapture.cs
index 05094c72ce..8f91de76b3 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardOvercapture.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardOvercapture.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsCardOvercapture : StripeEntity<ChargePaymentMethodDetailsCardOvercapture>
     {
@@ -9,6 +12,9 @@ public class ChargePaymentMethodDetailsCardOvercapture : StripeEntity<ChargePaym
         /// The maximum amount that can be captured.
         /// </summary>
         [JsonProperty("maximum_amount_capturable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("maximum_amount_capturable")]
+#endif
         public long MaximumAmountCapturable { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class ChargePaymentMethodDetailsCardOvercapture : StripeEntity<ChargePaym
         /// One of: <c>available</c>, or <c>unavailable</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardPresent.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardPresent.cs
index 72849e785c..3db0b86a70 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardPresent.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardPresent.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsCardPresent : StripeEntity<ChargePaymentMethodDetailsCardPresent>
     {
@@ -12,6 +15,9 @@ public class ChargePaymentMethodDetailsCardPresent : StripeEntity<ChargePaymentM
         /// The authorized amount.
         /// </summary>
         [JsonProperty("amount_authorized")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_authorized")]
+#endif
         public long? AmountAuthorized { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class ChargePaymentMethodDetailsCardPresent : StripeEntity<ChargePaymentM
         /// <c>unknown</c>.
         /// </summary>
         [JsonProperty("brand")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brand")]
+#endif
         public string Brand { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class ChargePaymentMethodDetailsCardPresent : StripeEntity<ChargePaymentM
         /// identifies the specific program or product associated with a card.
         /// </summary>
         [JsonProperty("brand_product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brand_product")]
+#endif
         public string BrandProduct { get; set; }
 
         /// <summary>
@@ -35,6 +47,10 @@ public class ChargePaymentMethodDetailsCardPresent : StripeEntity<ChargePaymentM
         /// </summary>
         [JsonProperty("capture_before")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_before")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime CaptureBefore { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -46,6 +62,9 @@ public class ChargePaymentMethodDetailsCardPresent : StripeEntity<ChargePaymentM
         /// payments, such as those made with Apple Pay and Google Pay.
         /// </summary>
         [JsonProperty("cardholder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder_name")]
+#endif
         public string CardholderName { get; set; }
 
         /// <summary>
@@ -53,6 +72,9 @@ public class ChargePaymentMethodDetailsCardPresent : StripeEntity<ChargePaymentM
         /// to get a sense of the international breakdown of cards you've collected.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -60,24 +82,36 @@ public class ChargePaymentMethodDetailsCardPresent : StripeEntity<ChargePaymentM
         /// only and not typically available in standard API requests.).
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// Authorization response cryptogram.
         /// </summary>
         [JsonProperty("emv_auth_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("emv_auth_data")]
+#endif
         public string EmvAuthData { get; set; }
 
         /// <summary>
         /// Two-digit number representing the card's expiration month.
         /// </summary>
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public long ExpMonth { get; set; }
 
         /// <summary>
         /// Four-digit number representing the card's expiration year.
         /// </summary>
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public long ExpYear { get; set; }
 
         /// <summary>
@@ -90,6 +124,9 @@ public class ChargePaymentMethodDetailsCardPresent : StripeEntity<ChargePaymentM
         /// fingerprints for the same card---one for India and one for the rest of the world.</em>.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
@@ -97,6 +134,9 @@ public class ChargePaymentMethodDetailsCardPresent : StripeEntity<ChargePaymentM
         /// <c>unknown</c>.
         /// </summary>
         [JsonProperty("funding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding")]
+#endif
         public string Funding { get; set; }
 
         /// <summary>
@@ -105,6 +145,9 @@ public class ChargePaymentMethodDetailsCardPresent : StripeEntity<ChargePaymentM
         /// generate a card PaymentMethod.
         /// </summary>
         [JsonProperty("generated_card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("generated_card")]
+#endif
         public string GeneratedCard { get; set; }
 
         /// <summary>
@@ -112,6 +155,9 @@ public class ChargePaymentMethodDetailsCardPresent : StripeEntity<ChargePaymentM
         /// available in standard API requests.).
         /// </summary>
         [JsonProperty("iin")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iin")]
+#endif
         public string Iin { get; set; }
 
         /// <summary>
@@ -120,6 +166,9 @@ public class ChargePaymentMethodDetailsCardPresent : StripeEntity<ChargePaymentM
         /// href="https://stripe.com/docs/api/payment_intents/create#create_payment_intent-payment_method_options-card_present-request_incremental_authorization_support">request_incremental_authorization_support</a>.
         /// </summary>
         [JsonProperty("incremental_authorization_supported")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("incremental_authorization_supported")]
+#endif
         public bool IncrementalAuthorizationSupported { get; set; }
 
         /// <summary>
@@ -127,12 +176,18 @@ public class ChargePaymentMethodDetailsCardPresent : StripeEntity<ChargePaymentM
         /// in standard API requests.).
         /// </summary>
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public string Issuer { get; set; }
 
         /// <summary>
         /// The last four digits of the card.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
@@ -142,6 +197,9 @@ public class ChargePaymentMethodDetailsCardPresent : StripeEntity<ChargePaymentM
         /// <c>visa</c>, or <c>unknown</c>.
         /// </summary>
         [JsonProperty("network")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network")]
+#endif
         public string Network { get; set; }
 
         /// <summary>
@@ -151,24 +209,36 @@ public class ChargePaymentMethodDetailsCardPresent : StripeEntity<ChargePaymentM
         /// network in the authorization response, and null otherwise.
         /// </summary>
         [JsonProperty("network_transaction_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network_transaction_id")]
+#endif
         public string NetworkTransactionId { get; set; }
 
         /// <summary>
         /// Details about payments collected offline.
         /// </summary>
         [JsonProperty("offline")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("offline")]
+#endif
         public ChargePaymentMethodDetailsCardPresentOffline Offline { get; set; }
 
         /// <summary>
         /// Defines whether the authorized amount can be over-captured or not.
         /// </summary>
         [JsonProperty("overcapture_supported")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overcapture_supported")]
+#endif
         public bool OvercaptureSupported { get; set; }
 
         /// <summary>
         /// EMV tag 5F2D. Preferred languages specified by the integrated circuit chip.
         /// </summary>
         [JsonProperty("preferred_locales")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_locales")]
+#endif
         public List<string> PreferredLocales { get; set; }
 
         /// <summary>
@@ -177,6 +247,9 @@ public class ChargePaymentMethodDetailsCardPresent : StripeEntity<ChargePaymentM
         /// <c>magnetic_stripe_fallback</c>, or <c>magnetic_stripe_track2</c>.
         /// </summary>
         [JsonProperty("read_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("read_method")]
+#endif
         public string ReadMethod { get; set; }
 
         /// <summary>
@@ -184,9 +257,15 @@ public class ChargePaymentMethodDetailsCardPresent : StripeEntity<ChargePaymentM
         /// transactions.
         /// </summary>
         [JsonProperty("receipt")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("receipt")]
+#endif
         public ChargePaymentMethodDetailsCardPresentReceipt Receipt { get; set; }
 
         [JsonProperty("wallet")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wallet")]
+#endif
         public ChargePaymentMethodDetailsCardPresentWallet Wallet { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardPresentOffline.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardPresentOffline.cs
index 6c96c0494c..936f834b2f 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardPresentOffline.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardPresentOffline.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsCardPresentOffline : StripeEntity<ChargePaymentMethodDetailsCardPresentOffline>
     {
@@ -12,12 +15,19 @@ public class ChargePaymentMethodDetailsCardPresentOffline : StripeEntity<ChargeP
         /// </summary>
         [JsonProperty("stored_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("stored_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? StoredAt { get; set; }
 
         /// <summary>
         /// The method used to process this payment method offline. Only deferred is allowed.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardPresentReceipt.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardPresentReceipt.cs
index d5bafb502b..b5bb79a6b0 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardPresentReceipt.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardPresentReceipt.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsCardPresentReceipt : StripeEntity<ChargePaymentMethodDetailsCardPresentReceipt>
     {
@@ -10,30 +13,45 @@ public class ChargePaymentMethodDetailsCardPresentReceipt : StripeEntity<ChargeP
         /// One of: <c>checking</c>, <c>credit</c>, <c>prepaid</c>, or <c>unknown</c>.
         /// </summary>
         [JsonProperty("account_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_type")]
+#endif
         public string AccountType { get; set; }
 
         /// <summary>
         /// EMV tag 9F26, cryptogram generated by the integrated circuit chip.
         /// </summary>
         [JsonProperty("application_cryptogram")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_cryptogram")]
+#endif
         public string ApplicationCryptogram { get; set; }
 
         /// <summary>
         /// Mnenomic of the Application Identifier.
         /// </summary>
         [JsonProperty("application_preferred_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_preferred_name")]
+#endif
         public string ApplicationPreferredName { get; set; }
 
         /// <summary>
         /// Identifier for this transaction.
         /// </summary>
         [JsonProperty("authorization_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("authorization_code")]
+#endif
         public string AuthorizationCode { get; set; }
 
         /// <summary>
         /// EMV tag 8A. A code returned by the card issuer.
         /// </summary>
         [JsonProperty("authorization_response_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("authorization_response_code")]
+#endif
         public string AuthorizationResponseCode { get; set; }
 
         /// <summary>
@@ -42,24 +60,36 @@ public class ChargePaymentMethodDetailsCardPresentReceipt : StripeEntity<ChargeP
         /// <c>offline_pin_and_signature</c>, <c>online_pin</c>, or <c>signature</c>.
         /// </summary>
         [JsonProperty("cardholder_verification_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder_verification_method")]
+#endif
         public string CardholderVerificationMethod { get; set; }
 
         /// <summary>
         /// EMV tag 84. Similar to the application identifier stored on the integrated circuit chip.
         /// </summary>
         [JsonProperty("dedicated_file_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dedicated_file_name")]
+#endif
         public string DedicatedFileName { get; set; }
 
         /// <summary>
         /// The outcome of a series of EMV functions performed by the card reader.
         /// </summary>
         [JsonProperty("terminal_verification_results")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("terminal_verification_results")]
+#endif
         public string TerminalVerificationResults { get; set; }
 
         /// <summary>
         /// An indication of various EMV functions performed during the transaction.
         /// </summary>
         [JsonProperty("transaction_status_information")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_status_information")]
+#endif
         public string TransactionStatusInformation { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardPresentWallet.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardPresentWallet.cs
index 95aba03037..42444dfd75 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardPresentWallet.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardPresentWallet.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsCardPresentWallet : StripeEntity<ChargePaymentMethodDetailsCardPresentWallet>
     {
@@ -11,6 +14,9 @@ public class ChargePaymentMethodDetailsCardPresentWallet : StripeEntity<ChargePa
         /// One of: <c>apple_pay</c>, <c>google_pay</c>, <c>samsung_pay</c>, or <c>unknown</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardThreeDSecure.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardThreeDSecure.cs
index 356bc51fdf..5dcafcb09c 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardThreeDSecure.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardThreeDSecure.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsCardThreeDSecure : StripeEntity<ChargePaymentMethodDetailsCardThreeDSecure>
     {
@@ -10,6 +13,9 @@ public class ChargePaymentMethodDetailsCardThreeDSecure : StripeEntity<ChargePay
         /// One of: <c>challenge</c>, or <c>frictionless</c>.
         /// </summary>
         [JsonProperty("authentication_flow")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("authentication_flow")]
+#endif
         public string AuthenticationFlow { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class ChargePaymentMethodDetailsCardThreeDSecure : StripeEntity<ChargePay
         /// One of: <c>01</c>, <c>02</c>, <c>05</c>, <c>06</c>, or <c>07</c>.
         /// </summary>
         [JsonProperty("electronic_commerce_indicator")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("electronic_commerce_indicator")]
+#endif
         public string ElectronicCommerceIndicator { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class ChargePaymentMethodDetailsCardThreeDSecure : StripeEntity<ChargePay
         /// One of: <c>low_risk</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("exemption_indicator")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exemption_indicator")]
+#endif
         public string ExemptionIndicator { get; set; }
 
         /// <summary>
@@ -32,6 +44,9 @@ public class ChargePaymentMethodDetailsCardThreeDSecure : StripeEntity<ChargePay
         /// This will depend on the outcome of Stripe's internal risk assessment.
         /// </summary>
         [JsonProperty("exemption_indicator_applied")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exemption_indicator_applied")]
+#endif
         public bool ExemptionIndicatorApplied { get; set; }
 
         /// <summary>
@@ -40,6 +55,9 @@ public class ChargePaymentMethodDetailsCardThreeDSecure : StripeEntity<ChargePay
         /// <c>failed</c>, <c>not_supported</c>, or <c>processing_error</c>.
         /// </summary>
         [JsonProperty("result")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("result")]
+#endif
         public string Result { get; set; }
 
         /// <summary>
@@ -49,6 +67,9 @@ public class ChargePaymentMethodDetailsCardThreeDSecure : StripeEntity<ChargePay
         /// <c>network_not_supported</c>, <c>protocol_error</c>, or <c>rejected</c>.
         /// </summary>
         [JsonProperty("result_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("result_reason")]
+#endif
         public string ResultReason { get; set; }
 
         /// <summary>
@@ -56,6 +77,9 @@ public class ChargePaymentMethodDetailsCardThreeDSecure : StripeEntity<ChargePay
         /// payment.
         /// </summary>
         [JsonProperty("transaction_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_id")]
+#endif
         public string TransactionId { get; set; }
 
         /// <summary>
@@ -63,6 +87,9 @@ public class ChargePaymentMethodDetailsCardThreeDSecure : StripeEntity<ChargePay
         /// One of: <c>1.0.2</c>, <c>2.1.0</c>, or <c>2.2.0</c>.
         /// </summary>
         [JsonProperty("version")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("version")]
+#endif
         public string Version { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardWallet.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardWallet.cs
index 531b362555..553620ecf9 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardWallet.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardWallet.cs
@@ -2,31 +2,55 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsCardWallet : StripeEntity<ChargePaymentMethodDetailsCardWallet>
     {
         [JsonProperty("amex_express_checkout")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amex_express_checkout")]
+#endif
         public ChargePaymentMethodDetailsCardWalletAmexExpressCheckout AmexExpressCheckout { get; set; }
 
         [JsonProperty("apple_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("apple_pay")]
+#endif
         public ChargePaymentMethodDetailsCardWalletApplePay ApplePay { get; set; }
 
         /// <summary>
         /// (For tokenized numbers only.) The last four digits of the device account number.
         /// </summary>
         [JsonProperty("dynamic_last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dynamic_last4")]
+#endif
         public string DynamicLast4 { get; set; }
 
         [JsonProperty("google_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("google_pay")]
+#endif
         public ChargePaymentMethodDetailsCardWalletGooglePay GooglePay { get; set; }
 
         [JsonProperty("link")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("link")]
+#endif
         public ChargePaymentMethodDetailsCardWalletLink Link { get; set; }
 
         [JsonProperty("masterpass")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("masterpass")]
+#endif
         public ChargePaymentMethodDetailsCardWalletMasterpass Masterpass { get; set; }
 
         [JsonProperty("samsung_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("samsung_pay")]
+#endif
         public ChargePaymentMethodDetailsCardWalletSamsungPay SamsungPay { get; set; }
 
         /// <summary>
@@ -38,9 +62,15 @@ public class ChargePaymentMethodDetailsCardWallet : StripeEntity<ChargePaymentMe
         /// <c>masterpass</c>, <c>samsung_pay</c>, or <c>visa_checkout</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         [JsonProperty("visa_checkout")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("visa_checkout")]
+#endif
         public ChargePaymentMethodDetailsCardWalletVisaCheckout VisaCheckout { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardWalletMasterpass.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardWalletMasterpass.cs
index 36b97dc5ea..5dcae8e681 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardWalletMasterpass.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardWalletMasterpass.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsCardWalletMasterpass : StripeEntity<ChargePaymentMethodDetailsCardWalletMasterpass>
     {
@@ -11,6 +14,9 @@ public class ChargePaymentMethodDetailsCardWalletMasterpass : StripeEntity<Charg
         /// mutated.
         /// </summary>
         [JsonProperty("billing_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_address")]
+#endif
         public Address BillingAddress { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class ChargePaymentMethodDetailsCardWalletMasterpass : StripeEntity<Charg
         /// supported) at the time of authorization or settlement. They cannot be set or mutated.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class ChargePaymentMethodDetailsCardWalletMasterpass : StripeEntity<Charg
         /// supported) at the time of authorization or settlement. They cannot be set or mutated.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -33,6 +45,9 @@ public class ChargePaymentMethodDetailsCardWalletMasterpass : StripeEntity<Charg
         /// or mutated.
         /// </summary>
         [JsonProperty("shipping_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_address")]
+#endif
         public Address ShippingAddress { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardWalletVisaCheckout.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardWalletVisaCheckout.cs
index b222cb545b..9e9b82f58b 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardWalletVisaCheckout.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCardWalletVisaCheckout.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsCardWalletVisaCheckout : StripeEntity<ChargePaymentMethodDetailsCardWalletVisaCheckout>
     {
@@ -11,6 +14,9 @@ public class ChargePaymentMethodDetailsCardWalletVisaCheckout : StripeEntity<Cha
         /// mutated.
         /// </summary>
         [JsonProperty("billing_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_address")]
+#endif
         public Address BillingAddress { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class ChargePaymentMethodDetailsCardWalletVisaCheckout : StripeEntity<Cha
         /// supported) at the time of authorization or settlement. They cannot be set or mutated.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class ChargePaymentMethodDetailsCardWalletVisaCheckout : StripeEntity<Cha
         /// supported) at the time of authorization or settlement. They cannot be set or mutated.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -33,6 +45,9 @@ public class ChargePaymentMethodDetailsCardWalletVisaCheckout : StripeEntity<Cha
         /// or mutated.
         /// </summary>
         [JsonProperty("shipping_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_address")]
+#endif
         public Address ShippingAddress { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCashapp.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCashapp.cs
index 993b52a452..9a8ee9fa28 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCashapp.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsCashapp.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsCashapp : StripeEntity<ChargePaymentMethodDetailsCashapp>
     {
@@ -9,12 +12,18 @@ public class ChargePaymentMethodDetailsCashapp : StripeEntity<ChargePaymentMetho
         /// A unique and immutable identifier assigned by Cash App to every buyer.
         /// </summary>
         [JsonProperty("buyer_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("buyer_id")]
+#endif
         public string BuyerId { get; set; }
 
         /// <summary>
         /// A public identifier for buyers using Cash App.
         /// </summary>
         [JsonProperty("cashtag")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cashtag")]
+#endif
         public string Cashtag { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsEps.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsEps.cs
index 8fb6193830..76accdf93c 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsEps.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsEps.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsEps : StripeEntity<ChargePaymentMethodDetailsEps>
     {
@@ -35,6 +38,9 @@ public class ChargePaymentMethodDetailsEps : StripeEntity<ChargePaymentMethodDet
         /// <c>vr_bank_braunau</c>.
         /// </summary>
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
 
         /// <summary>
@@ -43,6 +49,9 @@ public class ChargePaymentMethodDetailsEps : StripeEntity<ChargePaymentMethodDet
         /// EPS rarely provides this information so the attribute is usually empty.
         /// </summary>
         [JsonProperty("verified_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verified_name")]
+#endif
         public string VerifiedName { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsFpx.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsFpx.cs
index d91c18a7a6..7754064e15 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsFpx.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsFpx.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsFpx : StripeEntity<ChargePaymentMethodDetailsFpx>
     {
@@ -10,6 +13,9 @@ public class ChargePaymentMethodDetailsFpx : StripeEntity<ChargePaymentMethodDet
         /// One of: <c>company</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("account_holder_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_type")]
+#endif
         public string AccountHolderType { get; set; }
 
         /// <summary>
@@ -26,12 +32,18 @@ public class ChargePaymentMethodDetailsFpx : StripeEntity<ChargePaymentMethodDet
         /// <c>public_bank</c>, <c>rhb</c>, <c>standard_chartered</c>, or <c>uob</c>.
         /// </summary>
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
 
         /// <summary>
         /// Unique transaction id generated by FPX for every request from the merchant.
         /// </summary>
         [JsonProperty("transaction_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_id")]
+#endif
         public string TransactionId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsGiropay.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsGiropay.cs
index 2f5ab950fd..540d5b6254 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsGiropay.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsGiropay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsGiropay : StripeEntity<ChargePaymentMethodDetailsGiropay>
     {
@@ -9,18 +12,27 @@ public class ChargePaymentMethodDetailsGiropay : StripeEntity<ChargePaymentMetho
         /// Bank code of bank associated with the bank account.
         /// </summary>
         [JsonProperty("bank_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_code")]
+#endif
         public string BankCode { get; set; }
 
         /// <summary>
         /// Name of the bank associated with the bank account.
         /// </summary>
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         /// <summary>
         /// Bank Identifier Code of the bank associated with the bank account.
         /// </summary>
         [JsonProperty("bic")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bic")]
+#endif
         public string Bic { get; set; }
 
         /// <summary>
@@ -29,6 +41,9 @@ public class ChargePaymentMethodDetailsGiropay : StripeEntity<ChargePaymentMetho
         /// Giropay rarely provides this information so the attribute is usually empty.
         /// </summary>
         [JsonProperty("verified_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verified_name")]
+#endif
         public string VerifiedName { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsGrabpay.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsGrabpay.cs
index e16abb9af7..15c435bcdf 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsGrabpay.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsGrabpay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsGrabpay : StripeEntity<ChargePaymentMethodDetailsGrabpay>
     {
@@ -9,6 +12,9 @@ public class ChargePaymentMethodDetailsGrabpay : StripeEntity<ChargePaymentMetho
         /// Unique transaction id generated by GrabPay.
         /// </summary>
         [JsonProperty("transaction_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_id")]
+#endif
         public string TransactionId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsIdeal.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsIdeal.cs
index cd4d0767bf..82588fd5d5 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsIdeal.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsIdeal.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class ChargePaymentMethodDetailsIdeal : StripeEntity<ChargePaymentMethodDetailsIdeal>
     {
         /// <summary>
@@ -17,6 +23,9 @@ public class ChargePaymentMethodDetailsIdeal : StripeEntity<ChargePaymentMethodD
         /// <c>yoursafe</c>.
         /// </summary>
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class ChargePaymentMethodDetailsIdeal : StripeEntity<ChargePaymentMethodD
         /// <c>REVOLT21</c>, <c>SNSBNL2A</c>, or <c>TRIONL2U</c>.
         /// </summary>
         [JsonProperty("bic")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bic")]
+#endif
         public string Bic { get; set; }
 
         #region Expandable GeneratedSepaDebit
@@ -36,6 +48,9 @@ public class ChargePaymentMethodDetailsIdeal : StripeEntity<ChargePaymentMethodD
         /// The ID of the SEPA Direct Debit PaymentMethod which was generated by this Charge.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string GeneratedSepaDebitId
         {
             get => this.InternalGeneratedSepaDebit?.Id;
@@ -49,6 +64,9 @@ public string GeneratedSepaDebitId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PaymentMethod GeneratedSepaDebit
         {
             get => this.InternalGeneratedSepaDebit?.ExpandedObject;
@@ -57,6 +75,10 @@ public PaymentMethod GeneratedSepaDebit
 
         [JsonProperty("generated_sepa_debit")]
         [JsonConverter(typeof(ExpandableFieldConverter<PaymentMethod>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("generated_sepa_debit")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PaymentMethod>))]
+#endif
         internal ExpandableField<PaymentMethod> InternalGeneratedSepaDebit { get; set; }
         #endregion
 
@@ -67,6 +89,9 @@ public PaymentMethod GeneratedSepaDebit
         /// The mandate for the SEPA Direct Debit PaymentMethod which was generated by this Charge.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string GeneratedSepaDebitMandateId
         {
             get => this.InternalGeneratedSepaDebitMandate?.Id;
@@ -80,6 +105,9 @@ public string GeneratedSepaDebitMandateId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Mandate GeneratedSepaDebitMandate
         {
             get => this.InternalGeneratedSepaDebitMandate?.ExpandedObject;
@@ -88,6 +116,10 @@ public Mandate GeneratedSepaDebitMandate
 
         [JsonProperty("generated_sepa_debit_mandate")]
         [JsonConverter(typeof(ExpandableFieldConverter<Mandate>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("generated_sepa_debit_mandate")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Mandate>))]
+#endif
         internal ExpandableField<Mandate> InternalGeneratedSepaDebitMandate { get; set; }
         #endregion
 
@@ -95,6 +127,9 @@ public Mandate GeneratedSepaDebitMandate
         /// Last four characters of the IBAN.
         /// </summary>
         [JsonProperty("iban_last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iban_last4")]
+#endif
         public string IbanLast4 { get; set; }
 
         /// <summary>
@@ -102,6 +137,9 @@ public Mandate GeneratedSepaDebitMandate
         /// supported) at the time of authorization or settlement. They cannot be set or mutated.
         /// </summary>
         [JsonProperty("verified_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verified_name")]
+#endif
         public string VerifiedName { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsInteracPresent.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsInteracPresent.cs
index ec8f94e892..385f33781b 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsInteracPresent.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsInteracPresent.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsInteracPresent : StripeEntity<ChargePaymentMethodDetailsInteracPresent>
     {
@@ -10,6 +13,9 @@ public class ChargePaymentMethodDetailsInteracPresent : StripeEntity<ChargePayme
         /// Card brand. Can be <c>interac</c>, <c>mastercard</c> or <c>visa</c>.
         /// </summary>
         [JsonProperty("brand")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brand")]
+#endif
         public string Brand { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class ChargePaymentMethodDetailsInteracPresent : StripeEntity<ChargePayme
         /// payments, such as those made with Apple Pay and Google Pay.
         /// </summary>
         [JsonProperty("cardholder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder_name")]
+#endif
         public string CardholderName { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class ChargePaymentMethodDetailsInteracPresent : StripeEntity<ChargePayme
         /// to get a sense of the international breakdown of cards you've collected.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -35,24 +47,36 @@ public class ChargePaymentMethodDetailsInteracPresent : StripeEntity<ChargePayme
         /// only and not typically available in standard API requests.).
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// Authorization response cryptogram.
         /// </summary>
         [JsonProperty("emv_auth_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("emv_auth_data")]
+#endif
         public string EmvAuthData { get; set; }
 
         /// <summary>
         /// Two-digit number representing the card's expiration month.
         /// </summary>
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public long ExpMonth { get; set; }
 
         /// <summary>
         /// Four-digit number representing the card's expiration year.
         /// </summary>
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public long ExpYear { get; set; }
 
         /// <summary>
@@ -65,6 +89,9 @@ public class ChargePaymentMethodDetailsInteracPresent : StripeEntity<ChargePayme
         /// fingerprints for the same card---one for India and one for the rest of the world.</em>.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
@@ -72,6 +99,9 @@ public class ChargePaymentMethodDetailsInteracPresent : StripeEntity<ChargePayme
         /// <c>unknown</c>.
         /// </summary>
         [JsonProperty("funding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding")]
+#endif
         public string Funding { get; set; }
 
         /// <summary>
@@ -80,6 +110,9 @@ public class ChargePaymentMethodDetailsInteracPresent : StripeEntity<ChargePayme
         /// generate a card PaymentMethod.
         /// </summary>
         [JsonProperty("generated_card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("generated_card")]
+#endif
         public string GeneratedCard { get; set; }
 
         /// <summary>
@@ -87,6 +120,9 @@ public class ChargePaymentMethodDetailsInteracPresent : StripeEntity<ChargePayme
         /// available in standard API requests.).
         /// </summary>
         [JsonProperty("iin")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iin")]
+#endif
         public string Iin { get; set; }
 
         /// <summary>
@@ -94,12 +130,18 @@ public class ChargePaymentMethodDetailsInteracPresent : StripeEntity<ChargePayme
         /// in standard API requests.).
         /// </summary>
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public string Issuer { get; set; }
 
         /// <summary>
         /// The last four digits of the card.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
@@ -109,6 +151,9 @@ public class ChargePaymentMethodDetailsInteracPresent : StripeEntity<ChargePayme
         /// <c>visa</c>, or <c>unknown</c>.
         /// </summary>
         [JsonProperty("network")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network")]
+#endif
         public string Network { get; set; }
 
         /// <summary>
@@ -118,12 +163,18 @@ public class ChargePaymentMethodDetailsInteracPresent : StripeEntity<ChargePayme
         /// network in the authorization response, and null otherwise.
         /// </summary>
         [JsonProperty("network_transaction_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network_transaction_id")]
+#endif
         public string NetworkTransactionId { get; set; }
 
         /// <summary>
         /// EMV tag 5F2D. Preferred languages specified by the integrated circuit chip.
         /// </summary>
         [JsonProperty("preferred_locales")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_locales")]
+#endif
         public List<string> PreferredLocales { get; set; }
 
         /// <summary>
@@ -132,6 +183,9 @@ public class ChargePaymentMethodDetailsInteracPresent : StripeEntity<ChargePayme
         /// <c>magnetic_stripe_fallback</c>, or <c>magnetic_stripe_track2</c>.
         /// </summary>
         [JsonProperty("read_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("read_method")]
+#endif
         public string ReadMethod { get; set; }
 
         /// <summary>
@@ -139,6 +193,9 @@ public class ChargePaymentMethodDetailsInteracPresent : StripeEntity<ChargePayme
         /// transactions.
         /// </summary>
         [JsonProperty("receipt")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("receipt")]
+#endif
         public ChargePaymentMethodDetailsInteracPresentReceipt Receipt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsInteracPresentReceipt.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsInteracPresentReceipt.cs
index 490a7c5c6c..cc15ec157d 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsInteracPresentReceipt.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsInteracPresentReceipt.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsInteracPresentReceipt : StripeEntity<ChargePaymentMethodDetailsInteracPresentReceipt>
     {
@@ -10,30 +13,45 @@ public class ChargePaymentMethodDetailsInteracPresentReceipt : StripeEntity<Char
         /// One of: <c>checking</c>, <c>savings</c>, or <c>unknown</c>.
         /// </summary>
         [JsonProperty("account_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_type")]
+#endif
         public string AccountType { get; set; }
 
         /// <summary>
         /// EMV tag 9F26, cryptogram generated by the integrated circuit chip.
         /// </summary>
         [JsonProperty("application_cryptogram")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_cryptogram")]
+#endif
         public string ApplicationCryptogram { get; set; }
 
         /// <summary>
         /// Mnenomic of the Application Identifier.
         /// </summary>
         [JsonProperty("application_preferred_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_preferred_name")]
+#endif
         public string ApplicationPreferredName { get; set; }
 
         /// <summary>
         /// Identifier for this transaction.
         /// </summary>
         [JsonProperty("authorization_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("authorization_code")]
+#endif
         public string AuthorizationCode { get; set; }
 
         /// <summary>
         /// EMV tag 8A. A code returned by the card issuer.
         /// </summary>
         [JsonProperty("authorization_response_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("authorization_response_code")]
+#endif
         public string AuthorizationResponseCode { get; set; }
 
         /// <summary>
@@ -42,24 +60,36 @@ public class ChargePaymentMethodDetailsInteracPresentReceipt : StripeEntity<Char
         /// <c>offline_pin_and_signature</c>, <c>online_pin</c>, or <c>signature</c>.
         /// </summary>
         [JsonProperty("cardholder_verification_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder_verification_method")]
+#endif
         public string CardholderVerificationMethod { get; set; }
 
         /// <summary>
         /// EMV tag 84. Similar to the application identifier stored on the integrated circuit chip.
         /// </summary>
         [JsonProperty("dedicated_file_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dedicated_file_name")]
+#endif
         public string DedicatedFileName { get; set; }
 
         /// <summary>
         /// The outcome of a series of EMV functions performed by the card reader.
         /// </summary>
         [JsonProperty("terminal_verification_results")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("terminal_verification_results")]
+#endif
         public string TerminalVerificationResults { get; set; }
 
         /// <summary>
         /// An indication of various EMV functions performed during the transaction.
         /// </summary>
         [JsonProperty("transaction_status_information")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_status_information")]
+#endif
         public string TransactionStatusInformation { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsKakaoPay.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsKakaoPay.cs
index df6972d1dc..fde5ed76b8 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsKakaoPay.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsKakaoPay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsKakaoPay : StripeEntity<ChargePaymentMethodDetailsKakaoPay>
     {
@@ -9,6 +12,9 @@ public class ChargePaymentMethodDetailsKakaoPay : StripeEntity<ChargePaymentMeth
         /// A unique identifier for the buyer as determined by the local payment processor.
         /// </summary>
         [JsonProperty("buyer_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("buyer_id")]
+#endif
         public string BuyerId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsKlarna.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsKlarna.cs
index 748326216c..41760a454e 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsKlarna.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsKlarna.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsKlarna : StripeEntity<ChargePaymentMethodDetailsKlarna>
     {
@@ -9,6 +12,9 @@ public class ChargePaymentMethodDetailsKlarna : StripeEntity<ChargePaymentMethod
         /// The payer details for this transaction.
         /// </summary>
         [JsonProperty("payer_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payer_details")]
+#endif
         public ChargePaymentMethodDetailsKlarnaPayerDetails PayerDetails { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class ChargePaymentMethodDetailsKlarna : StripeEntity<ChargePaymentMethod
         /// <c>pay_now</c>, <c>pay_with_financing</c>, or <c>pay_in_installments</c>.
         /// </summary>
         [JsonProperty("payment_method_category")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_category")]
+#endif
         public string PaymentMethodCategory { get; set; }
 
         /// <summary>
@@ -30,6 +39,9 @@ public class ChargePaymentMethodDetailsKlarna : StripeEntity<ChargePaymentMethod
         /// <c>en-PT</c>, <c>de-CH</c>, <c>fr-CH</c>, <c>it-CH</c>, or <c>en-CH</c>.
         /// </summary>
         [JsonProperty("preferred_locale")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_locale")]
+#endif
         public string PreferredLocale { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsKlarnaPayerDetails.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsKlarnaPayerDetails.cs
index a6b1abbe06..8a1d032c2f 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsKlarnaPayerDetails.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsKlarnaPayerDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsKlarnaPayerDetails : StripeEntity<ChargePaymentMethodDetailsKlarnaPayerDetails>
     {
@@ -9,6 +12,9 @@ public class ChargePaymentMethodDetailsKlarnaPayerDetails : StripeEntity<ChargeP
         /// The payer's address.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public ChargePaymentMethodDetailsKlarnaPayerDetailsAddress Address { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsKlarnaPayerDetailsAddress.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsKlarnaPayerDetailsAddress.cs
index afafe0f2f1..bef78ade9a 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsKlarnaPayerDetailsAddress.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsKlarnaPayerDetailsAddress.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsKlarnaPayerDetailsAddress : StripeEntity<ChargePaymentMethodDetailsKlarnaPayerDetailsAddress>
     {
@@ -9,6 +12,9 @@ public class ChargePaymentMethodDetailsKlarnaPayerDetailsAddress : StripeEntity<
         /// The payer address country.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsKonbini.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsKonbini.cs
index 0de181adb3..c0860f3304 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsKonbini.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsKonbini.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsKonbini : StripeEntity<ChargePaymentMethodDetailsKonbini>
     {
@@ -10,6 +13,9 @@ public class ChargePaymentMethodDetailsKonbini : StripeEntity<ChargePaymentMetho
         /// payment was completed.
         /// </summary>
         [JsonProperty("store")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("store")]
+#endif
         public ChargePaymentMethodDetailsKonbiniStore Store { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsKonbiniStore.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsKonbiniStore.cs
index fc637482f8..24a22315ee 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsKonbiniStore.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsKonbiniStore.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsKonbiniStore : StripeEntity<ChargePaymentMethodDetailsKonbiniStore>
     {
@@ -10,6 +13,9 @@ public class ChargePaymentMethodDetailsKonbiniStore : StripeEntity<ChargePayment
         /// One of: <c>familymart</c>, <c>lawson</c>, <c>ministop</c>, or <c>seicomart</c>.
         /// </summary>
         [JsonProperty("chain")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("chain")]
+#endif
         public string Chain { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsKrCard.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsKrCard.cs
index 65fdd1347b..2f2fcb044a 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsKrCard.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsKrCard.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsKrCard : StripeEntity<ChargePaymentMethodDetailsKrCard>
     {
@@ -14,18 +17,27 @@ public class ChargePaymentMethodDetailsKrCard : StripeEntity<ChargePaymentMethod
         /// <c>woori</c>.
         /// </summary>
         [JsonProperty("brand")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brand")]
+#endif
         public string Brand { get; set; }
 
         /// <summary>
         /// A unique identifier for the buyer as determined by the local payment processor.
         /// </summary>
         [JsonProperty("buyer_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("buyer_id")]
+#endif
         public string BuyerId { get; set; }
 
         /// <summary>
         /// The last four digits of the card. This may not be present for American Express cards.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsLink.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsLink.cs
index 99379fa260..bef1e9d7c1 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsLink.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsLink.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsLink : StripeEntity<ChargePaymentMethodDetailsLink>
     {
@@ -10,6 +13,9 @@ public class ChargePaymentMethodDetailsLink : StripeEntity<ChargePaymentMethodDe
         /// You could use this attribute to get a sense of international fees.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsMobilepay.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsMobilepay.cs
index 42b3262434..89bbd4c81d 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsMobilepay.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsMobilepay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsMobilepay : StripeEntity<ChargePaymentMethodDetailsMobilepay>
     {
@@ -9,6 +12,9 @@ public class ChargePaymentMethodDetailsMobilepay : StripeEntity<ChargePaymentMet
         /// Internal card details.
         /// </summary>
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public ChargePaymentMethodDetailsMobilepayCard Card { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsMobilepayCard.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsMobilepayCard.cs
index 1a55519639..1f5d87b21e 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsMobilepayCard.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsMobilepayCard.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsMobilepayCard : StripeEntity<ChargePaymentMethodDetailsMobilepayCard>
     {
@@ -9,30 +12,45 @@ public class ChargePaymentMethodDetailsMobilepayCard : StripeEntity<ChargePaymen
         /// Brand of the card used in the transaction.
         /// </summary>
         [JsonProperty("brand")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brand")]
+#endif
         public string Brand { get; set; }
 
         /// <summary>
         /// Two-letter ISO code representing the country of the card.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
         /// Two digit number representing the card's expiration month.
         /// </summary>
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public long? ExpMonth { get; set; }
 
         /// <summary>
         /// Two digit number representing the card's expiration year.
         /// </summary>
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public long? ExpYear { get; set; }
 
         /// <summary>
         /// The last 4 digits of the card.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsMultibanco.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsMultibanco.cs
index 73f2e54dc9..2fb341d354 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsMultibanco.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsMultibanco.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsMultibanco : StripeEntity<ChargePaymentMethodDetailsMultibanco>
     {
@@ -9,12 +12,18 @@ public class ChargePaymentMethodDetailsMultibanco : StripeEntity<ChargePaymentMe
         /// Entity number associated with this Multibanco payment.
         /// </summary>
         [JsonProperty("entity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("entity")]
+#endif
         public string Entity { get; set; }
 
         /// <summary>
         /// Reference number associated with this Multibanco payment.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsNaverPay.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsNaverPay.cs
index a8348346dd..83b7f8372a 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsNaverPay.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsNaverPay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsNaverPay : StripeEntity<ChargePaymentMethodDetailsNaverPay>
     {
@@ -9,6 +12,9 @@ public class ChargePaymentMethodDetailsNaverPay : StripeEntity<ChargePaymentMeth
         /// A unique identifier for the buyer as determined by the local payment processor.
         /// </summary>
         [JsonProperty("buyer_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("buyer_id")]
+#endif
         public string BuyerId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsOxxo.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsOxxo.cs
index 0b4072a1eb..aacba6d6db 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsOxxo.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsOxxo.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsOxxo : StripeEntity<ChargePaymentMethodDetailsOxxo>
     {
@@ -9,6 +12,9 @@ public class ChargePaymentMethodDetailsOxxo : StripeEntity<ChargePaymentMethodDe
         /// OXXO reference number.
         /// </summary>
         [JsonProperty("number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("number")]
+#endif
         public string Number { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsP24.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsP24.cs
index 6df5800fe3..c5298f2c9a 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsP24.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsP24.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsP24 : StripeEntity<ChargePaymentMethodDetailsP24>
     {
@@ -24,12 +27,18 @@ public class ChargePaymentMethodDetailsP24 : StripeEntity<ChargePaymentMethodDet
         /// <c>volkswagen_bank</c>.
         /// </summary>
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
 
         /// <summary>
         /// Unique reference for this Przelewy24 payment.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
@@ -38,6 +47,9 @@ public class ChargePaymentMethodDetailsP24 : StripeEntity<ChargePaymentMethodDet
         /// Przelewy24 rarely provides this information so the attribute is usually empty.
         /// </summary>
         [JsonProperty("verified_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verified_name")]
+#endif
         public string VerifiedName { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsPayco.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsPayco.cs
index d05f153bfc..e76f1c75e9 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsPayco.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsPayco.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsPayco : StripeEntity<ChargePaymentMethodDetailsPayco>
     {
@@ -9,6 +12,9 @@ public class ChargePaymentMethodDetailsPayco : StripeEntity<ChargePaymentMethodD
         /// A unique identifier for the buyer as determined by the local payment processor.
         /// </summary>
         [JsonProperty("buyer_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("buyer_id")]
+#endif
         public string BuyerId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsPaynow.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsPaynow.cs
index 746d714b6c..74030d104f 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsPaynow.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsPaynow.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsPaynow : StripeEntity<ChargePaymentMethodDetailsPaynow>
     {
@@ -9,6 +12,9 @@ public class ChargePaymentMethodDetailsPaynow : StripeEntity<ChargePaymentMethod
         /// Reference number associated with this PayNow payment.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsPaypal.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsPaypal.cs
index 7a49f5b18b..22199750d1 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsPaypal.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsPaypal.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsPaypal : StripeEntity<ChargePaymentMethodDetailsPaypal>
     {
@@ -11,6 +14,9 @@ public class ChargePaymentMethodDetailsPaypal : StripeEntity<ChargePaymentMethod
         /// or mutated.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -18,12 +24,18 @@ public class ChargePaymentMethodDetailsPaypal : StripeEntity<ChargePaymentMethod
         /// authorization or settlement. They cannot be set or mutated.
         /// </summary>
         [JsonProperty("payer_email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payer_email")]
+#endif
         public string PayerEmail { get; set; }
 
         /// <summary>
         /// PayPal account PayerID. This identifier uniquely identifies the PayPal customer.
         /// </summary>
         [JsonProperty("payer_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payer_id")]
+#endif
         public string PayerId { get; set; }
 
         /// <summary>
@@ -31,6 +43,9 @@ public class ChargePaymentMethodDetailsPaypal : StripeEntity<ChargePaymentMethod
         /// authorization or settlement. They cannot be set or mutated.
         /// </summary>
         [JsonProperty("payer_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payer_name")]
+#endif
         public string PayerName { get; set; }
 
         /// <summary>
@@ -38,12 +53,18 @@ public class ChargePaymentMethodDetailsPaypal : StripeEntity<ChargePaymentMethod
         /// for this transaction.
         /// </summary>
         [JsonProperty("seller_protection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("seller_protection")]
+#endif
         public ChargePaymentMethodDetailsPaypalSellerProtection SellerProtection { get; set; }
 
         /// <summary>
         /// A unique ID generated by PayPal for this transaction.
         /// </summary>
         [JsonProperty("transaction_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_id")]
+#endif
         public string TransactionId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsPaypalSellerProtection.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsPaypalSellerProtection.cs
index 370512a377..37dfd095e1 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsPaypalSellerProtection.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsPaypalSellerProtection.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsPaypalSellerProtection : StripeEntity<ChargePaymentMethodDetailsPaypalSellerProtection>
     {
@@ -11,6 +14,9 @@ public class ChargePaymentMethodDetailsPaypalSellerProtection : StripeEntity<Cha
         /// One of: <c>fraudulent</c>, or <c>product_not_received</c>.
         /// </summary>
         [JsonProperty("dispute_categories")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dispute_categories")]
+#endif
         public List<string> DisputeCategories { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class ChargePaymentMethodDetailsPaypalSellerProtection : StripeEntity<Cha
         /// One of: <c>eligible</c>, <c>not_eligible</c>, or <c>partially_eligible</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsPix.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsPix.cs
index 4c5fcc460b..c4d65461ed 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsPix.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsPix.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsPix : StripeEntity<ChargePaymentMethodDetailsPix>
     {
@@ -9,6 +12,9 @@ public class ChargePaymentMethodDetailsPix : StripeEntity<ChargePaymentMethodDet
         /// Unique transaction id generated by BCB.
         /// </summary>
         [JsonProperty("bank_transaction_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_transaction_id")]
+#endif
         public string BankTransactionId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsPromptpay.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsPromptpay.cs
index 06d2d810b0..53706e3390 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsPromptpay.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsPromptpay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsPromptpay : StripeEntity<ChargePaymentMethodDetailsPromptpay>
     {
@@ -9,6 +12,9 @@ public class ChargePaymentMethodDetailsPromptpay : StripeEntity<ChargePaymentMet
         /// Bill reference generated by PromptPay.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsRevolutPay.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsRevolutPay.cs
index 8e705a5aec..5a8958f33f 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsRevolutPay.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsRevolutPay.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsRevolutPay : StripeEntity<ChargePaymentMethodDetailsRevolutPay>
     {
         [JsonProperty("funding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding")]
+#endif
         public ChargePaymentMethodDetailsRevolutPayFunding Funding { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsRevolutPayFunding.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsRevolutPayFunding.cs
index 0b797ad880..7cbf026f8f 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsRevolutPayFunding.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsRevolutPayFunding.cs
@@ -2,16 +2,25 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsRevolutPayFunding : StripeEntity<ChargePaymentMethodDetailsRevolutPayFunding>
     {
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public ChargePaymentMethodDetailsRevolutPayFundingCard Card { get; set; }
 
         /// <summary>
         /// funding type of the underlying payment method.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsRevolutPayFundingCard.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsRevolutPayFundingCard.cs
index 501482796d..23b7969215 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsRevolutPayFundingCard.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsRevolutPayFundingCard.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsRevolutPayFundingCard : StripeEntity<ChargePaymentMethodDetailsRevolutPayFundingCard>
     {
@@ -11,6 +14,9 @@ public class ChargePaymentMethodDetailsRevolutPayFundingCard : StripeEntity<Char
         /// <c>unknown</c>.
         /// </summary>
         [JsonProperty("brand")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brand")]
+#endif
         public string Brand { get; set; }
 
         /// <summary>
@@ -18,18 +24,27 @@ public class ChargePaymentMethodDetailsRevolutPayFundingCard : StripeEntity<Char
         /// to get a sense of the international breakdown of cards you've collected.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
         /// Two-digit number representing the card's expiration month.
         /// </summary>
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public long? ExpMonth { get; set; }
 
         /// <summary>
         /// Four-digit number representing the card's expiration year.
         /// </summary>
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public long? ExpYear { get; set; }
 
         /// <summary>
@@ -37,12 +52,18 @@ public class ChargePaymentMethodDetailsRevolutPayFundingCard : StripeEntity<Char
         /// <c>unknown</c>.
         /// </summary>
         [JsonProperty("funding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding")]
+#endif
         public string Funding { get; set; }
 
         /// <summary>
         /// The last four digits of the card.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsSamsungPay.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsSamsungPay.cs
index 1c6821a5db..772423c996 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsSamsungPay.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsSamsungPay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsSamsungPay : StripeEntity<ChargePaymentMethodDetailsSamsungPay>
     {
@@ -9,6 +12,9 @@ public class ChargePaymentMethodDetailsSamsungPay : StripeEntity<ChargePaymentMe
         /// A unique identifier for the buyer as determined by the local payment processor.
         /// </summary>
         [JsonProperty("buyer_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("buyer_id")]
+#endif
         public string BuyerId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsSepaDebit.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsSepaDebit.cs
index d8e9f1b8df..95c297a2db 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsSepaDebit.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsSepaDebit.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsSepaDebit : StripeEntity<ChargePaymentMethodDetailsSepaDebit>
     {
@@ -9,18 +12,27 @@ public class ChargePaymentMethodDetailsSepaDebit : StripeEntity<ChargePaymentMet
         /// Bank code of bank associated with the bank account.
         /// </summary>
         [JsonProperty("bank_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_code")]
+#endif
         public string BankCode { get; set; }
 
         /// <summary>
         /// Branch code of bank associated with the bank account.
         /// </summary>
         [JsonProperty("branch_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("branch_code")]
+#endif
         public string BranchCode { get; set; }
 
         /// <summary>
         /// Two-letter ISO code representing the country the bank account is located in.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -28,12 +40,18 @@ public class ChargePaymentMethodDetailsSepaDebit : StripeEntity<ChargePaymentMet
         /// whether two bank accounts are the same.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
         /// Last four characters of the IBAN.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
@@ -43,6 +61,9 @@ public class ChargePaymentMethodDetailsSepaDebit : StripeEntity<ChargePaymentMet
         /// href="https://stripe.com/docs/api/mandates/retrieve">retrieve the Mandate</a>.
         /// </summary>
         [JsonProperty("mandate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate")]
+#endif
         public string Mandate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsSofort.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsSofort.cs
index 00686426ae..e9b69a972c 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsSofort.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsSofort.cs
@@ -3,31 +3,49 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class ChargePaymentMethodDetailsSofort : StripeEntity<ChargePaymentMethodDetailsSofort>
     {
         /// <summary>
         /// Bank code of bank associated with the bank account.
         /// </summary>
         [JsonProperty("bank_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_code")]
+#endif
         public string BankCode { get; set; }
 
         /// <summary>
         /// Name of the bank associated with the bank account.
         /// </summary>
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         /// <summary>
         /// Bank Identifier Code of the bank associated with the bank account.
         /// </summary>
         [JsonProperty("bic")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bic")]
+#endif
         public string Bic { get; set; }
 
         /// <summary>
         /// Two-letter ISO code representing the country the bank account is located in.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         #region Expandable GeneratedSepaDebit
@@ -37,6 +55,9 @@ public class ChargePaymentMethodDetailsSofort : StripeEntity<ChargePaymentMethod
         /// The ID of the SEPA Direct Debit PaymentMethod which was generated by this Charge.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string GeneratedSepaDebitId
         {
             get => this.InternalGeneratedSepaDebit?.Id;
@@ -50,6 +71,9 @@ public string GeneratedSepaDebitId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PaymentMethod GeneratedSepaDebit
         {
             get => this.InternalGeneratedSepaDebit?.ExpandedObject;
@@ -58,6 +82,10 @@ public PaymentMethod GeneratedSepaDebit
 
         [JsonProperty("generated_sepa_debit")]
         [JsonConverter(typeof(ExpandableFieldConverter<PaymentMethod>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("generated_sepa_debit")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PaymentMethod>))]
+#endif
         internal ExpandableField<PaymentMethod> InternalGeneratedSepaDebit { get; set; }
         #endregion
 
@@ -68,6 +96,9 @@ public PaymentMethod GeneratedSepaDebit
         /// The mandate for the SEPA Direct Debit PaymentMethod which was generated by this Charge.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string GeneratedSepaDebitMandateId
         {
             get => this.InternalGeneratedSepaDebitMandate?.Id;
@@ -81,6 +112,9 @@ public string GeneratedSepaDebitMandateId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Mandate GeneratedSepaDebitMandate
         {
             get => this.InternalGeneratedSepaDebitMandate?.ExpandedObject;
@@ -89,6 +123,10 @@ public Mandate GeneratedSepaDebitMandate
 
         [JsonProperty("generated_sepa_debit_mandate")]
         [JsonConverter(typeof(ExpandableFieldConverter<Mandate>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("generated_sepa_debit_mandate")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Mandate>))]
+#endif
         internal ExpandableField<Mandate> InternalGeneratedSepaDebitMandate { get; set; }
         #endregion
 
@@ -96,6 +134,9 @@ public Mandate GeneratedSepaDebitMandate
         /// Last four characters of the IBAN.
         /// </summary>
         [JsonProperty("iban_last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iban_last4")]
+#endif
         public string IbanLast4 { get; set; }
 
         /// <summary>
@@ -105,6 +146,9 @@ public Mandate GeneratedSepaDebitMandate
         /// One of: <c>de</c>, <c>en</c>, <c>es</c>, <c>fr</c>, <c>it</c>, <c>nl</c>, or <c>pl</c>.
         /// </summary>
         [JsonProperty("preferred_language")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_language")]
+#endif
         public string PreferredLanguage { get; set; }
 
         /// <summary>
@@ -112,6 +156,9 @@ public Mandate GeneratedSepaDebitMandate
         /// supported) at the time of authorization or settlement. They cannot be set or mutated.
         /// </summary>
         [JsonProperty("verified_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verified_name")]
+#endif
         public string VerifiedName { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsSwish.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsSwish.cs
index 0175cd3703..e6438b6256 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsSwish.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsSwish.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsSwish : StripeEntity<ChargePaymentMethodDetailsSwish>
     {
@@ -10,18 +13,27 @@ public class ChargePaymentMethodDetailsSwish : StripeEntity<ChargePaymentMethodD
         /// whether two Swish transactions were paid for by the same payer.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
         /// Payer bank reference number for the payment.
         /// </summary>
         [JsonProperty("payment_reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_reference")]
+#endif
         public string PaymentReference { get; set; }
 
         /// <summary>
         /// The last four digits of the Swish account phone number.
         /// </summary>
         [JsonProperty("verified_phone_last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verified_phone_last4")]
+#endif
         public string VerifiedPhoneLast4 { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsUsBankAccount.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsUsBankAccount.cs
index 9ba6f52817..d857020642 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsUsBankAccount.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsUsBankAccount.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class ChargePaymentMethodDetailsUsBankAccount : StripeEntity<ChargePaymentMethodDetailsUsBankAccount>
     {
         /// <summary>
@@ -11,6 +17,9 @@ public class ChargePaymentMethodDetailsUsBankAccount : StripeEntity<ChargePaymen
         /// One of: <c>company</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("account_holder_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_type")]
+#endif
         public string AccountHolderType { get; set; }
 
         /// <summary>
@@ -18,12 +27,18 @@ public class ChargePaymentMethodDetailsUsBankAccount : StripeEntity<ChargePaymen
         /// One of: <c>checking</c>, or <c>savings</c>.
         /// </summary>
         [JsonProperty("account_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_type")]
+#endif
         public string AccountType { get; set; }
 
         /// <summary>
         /// Name of the bank associated with the bank account.
         /// </summary>
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         /// <summary>
@@ -31,12 +46,18 @@ public class ChargePaymentMethodDetailsUsBankAccount : StripeEntity<ChargePaymen
         /// whether two bank accounts are the same.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
         /// Last four digits of the bank account number.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         #region Expandable Mandate
@@ -46,6 +67,9 @@ public class ChargePaymentMethodDetailsUsBankAccount : StripeEntity<ChargePaymen
         /// ID of the mandate used to make this payment.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string MandateId
         {
             get => this.InternalMandate?.Id;
@@ -59,6 +83,9 @@ public string MandateId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Mandate Mandate
         {
             get => this.InternalMandate?.ExpandedObject;
@@ -67,6 +94,10 @@ public Mandate Mandate
 
         [JsonProperty("mandate")]
         [JsonConverter(typeof(ExpandableFieldConverter<Mandate>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Mandate>))]
+#endif
         internal ExpandableField<Mandate> InternalMandate { get; set; }
         #endregion
 
@@ -74,12 +105,18 @@ public Mandate Mandate
         /// Reference number to locate ACH payments with customer's bank.
         /// </summary>
         [JsonProperty("payment_reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_reference")]
+#endif
         public string PaymentReference { get; set; }
 
         /// <summary>
         /// Routing number of the bank account.
         /// </summary>
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsWechatPay.cs b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsWechatPay.cs
index ea60980c15..efa2b505fb 100644
--- a/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsWechatPay.cs
+++ b/src/Stripe.net/Entities/Charges/ChargePaymentMethodDetailsWechatPay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargePaymentMethodDetailsWechatPay : StripeEntity<ChargePaymentMethodDetailsWechatPay>
     {
@@ -10,12 +13,18 @@ public class ChargePaymentMethodDetailsWechatPay : StripeEntity<ChargePaymentMet
         /// check whether two WeChat accounts are the same.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
         /// Transaction ID of this particular WeChat Pay transaction.
         /// </summary>
         [JsonProperty("transaction_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_id")]
+#endif
         public string TransactionId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargeRadarOptions.cs b/src/Stripe.net/Entities/Charges/ChargeRadarOptions.cs
index 1a6142d95e..6daa628dc6 100644
--- a/src/Stripe.net/Entities/Charges/ChargeRadarOptions.cs
+++ b/src/Stripe.net/Entities/Charges/ChargeRadarOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargeRadarOptions : StripeEntity<ChargeRadarOptions>
     {
@@ -11,6 +14,9 @@ public class ChargeRadarOptions : StripeEntity<ChargeRadarOptions>
         /// predictions on your payments.
         /// </summary>
         [JsonProperty("session")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("session")]
+#endif
         public string Session { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Charges/ChargeTransferData.cs b/src/Stripe.net/Entities/Charges/ChargeTransferData.cs
index 1865b433e7..4f989d84f8 100644
--- a/src/Stripe.net/Entities/Charges/ChargeTransferData.cs
+++ b/src/Stripe.net/Entities/Charges/ChargeTransferData.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class ChargeTransferData : StripeEntity<ChargeTransferData>
     {
         /// <summary>
@@ -11,6 +17,9 @@ public class ChargeTransferData : StripeEntity<ChargeTransferData>
         /// charge amount is transferred to the destination account.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         #region Expandable Destination
@@ -21,6 +30,9 @@ public class ChargeTransferData : StripeEntity<ChargeTransferData>
         /// was specified in the charge request.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DestinationId
         {
             get => this.InternalDestination?.Id;
@@ -35,6 +47,9 @@ public string DestinationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Destination
         {
             get => this.InternalDestination?.ExpandedObject;
@@ -43,6 +58,10 @@ public Account Destination
 
         [JsonProperty("destination")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalDestination { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/Session.cs b/src/Stripe.net/Entities/Checkout/Sessions/Session.cs
index 359a1beb49..9922550729 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/Session.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/Session.cs
@@ -5,6 +5,9 @@ namespace Stripe.Checkout
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A Checkout Session represents your customer's session as they pay for one-time purchases
@@ -24,18 +27,27 @@ namespace Stripe.Checkout
     /// Related guide: <a href="https://stripe.com/docs/checkout/quickstart">Checkout
     /// quickstart</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class Session : StripeEntity<Session>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -43,33 +55,51 @@ public class Session : StripeEntity<Session>, IHasId, IHasMetadata, IHasObject
         /// href="https://docs.stripe.com/payments/checkout/adaptive-pricing">Adaptive Pricing</a>.
         /// </summary>
         [JsonProperty("adaptive_pricing")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("adaptive_pricing")]
+#endif
         public SessionAdaptivePricing AdaptivePricing { get; set; }
 
         /// <summary>
         /// When set, provides configuration for actions to take if this Checkout Session expires.
         /// </summary>
         [JsonProperty("after_expiration")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("after_expiration")]
+#endif
         public SessionAfterExpiration AfterExpiration { get; set; }
 
         /// <summary>
         /// Enables user redeemable promotion codes.
         /// </summary>
         [JsonProperty("allow_promotion_codes")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allow_promotion_codes")]
+#endif
         public bool? AllowPromotionCodes { get; set; }
 
         /// <summary>
         /// Total of all items before discounts or taxes are applied.
         /// </summary>
         [JsonProperty("amount_subtotal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_subtotal")]
+#endif
         public long? AmountSubtotal { get; set; }
 
         /// <summary>
         /// Total of all items after discounts and taxes are applied.
         /// </summary>
         [JsonProperty("amount_total")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_total")]
+#endif
         public long? AmountTotal { get; set; }
 
         [JsonProperty("automatic_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatic_tax")]
+#endif
         public SessionAutomaticTax AutomaticTax { get; set; }
 
         /// <summary>
@@ -78,6 +108,9 @@ public class Session : StripeEntity<Session>, IHasId, IHasMetadata, IHasObject
         /// One of: <c>auto</c>, or <c>required</c>.
         /// </summary>
         [JsonProperty("billing_address_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_address_collection")]
+#endif
         public string BillingAddressCollection { get; set; }
 
         /// <summary>
@@ -85,6 +118,9 @@ public class Session : StripeEntity<Session>, IHasId, IHasMetadata, IHasObject
         /// they decide to cancel payment and return to your website.
         /// </summary>
         [JsonProperty("cancel_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancel_url")]
+#endif
         public string CancelUrl { get; set; }
 
         /// <summary>
@@ -92,24 +128,36 @@ public class Session : StripeEntity<Session>, IHasId, IHasMetadata, IHasObject
         /// or similar, and can be used to reconcile the Session with your internal systems.
         /// </summary>
         [JsonProperty("client_reference_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("client_reference_id")]
+#endif
         public string ClientReferenceId { get; set; }
 
         /// <summary>
         /// Client secret to be used when initializing Stripe.js embedded checkout.
         /// </summary>
         [JsonProperty("client_secret")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("client_secret")]
+#endif
         public string ClientSecret { get; set; }
 
         /// <summary>
         /// Information about the customer collected within the Checkout Session.
         /// </summary>
         [JsonProperty("collected_information")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("collected_information")]
+#endif
         public SessionCollectedInformation CollectedInformation { get; set; }
 
         /// <summary>
         /// Results of <c>consent_collection</c> for this session.
         /// </summary>
         [JsonProperty("consent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("consent")]
+#endif
         public SessionConsent Consent { get; set; }
 
         /// <summary>
@@ -117,6 +165,9 @@ public class Session : StripeEntity<Session>, IHasId, IHasMetadata, IHasObject
         /// customers.
         /// </summary>
         [JsonProperty("consent_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("consent_collection")]
+#endif
         public SessionConsentCollection ConsentCollection { get; set; }
 
         /// <summary>
@@ -124,6 +175,10 @@ public class Session : StripeEntity<Session>, IHasId, IHasMetadata, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -132,6 +187,9 @@ public class Session : StripeEntity<Session>, IHasId, IHasMetadata, IHasObject
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -140,6 +198,9 @@ public class Session : StripeEntity<Session>, IHasId, IHasMetadata, IHasObject
         /// sessions.
         /// </summary>
         [JsonProperty("currency_conversion")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency_conversion")]
+#endif
         public SessionCurrencyConversion CurrencyConversion { get; set; }
 
         /// <summary>
@@ -147,9 +208,15 @@ public class Session : StripeEntity<Session>, IHasId, IHasMetadata, IHasObject
         /// are supported.
         /// </summary>
         [JsonProperty("custom_fields")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_fields")]
+#endif
         public List<SessionCustomField> CustomFields { get; set; }
 
         [JsonProperty("custom_text")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_text")]
+#endif
         public SessionCustomText CustomText { get; set; }
 
         #region Expandable Customer
@@ -163,6 +230,9 @@ public class Session : StripeEntity<Session>, IHasId, IHasMetadata, IHasObject
         /// Session was created.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerId
         {
             get => this.InternalCustomer?.Id;
@@ -180,6 +250,9 @@ public string CustomerId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Customer Customer
         {
             get => this.InternalCustomer?.ExpandedObject;
@@ -188,6 +261,10 @@ public Customer Customer
 
         [JsonProperty("customer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Customer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Customer>))]
+#endif
         internal ExpandableField<Customer> InternalCustomer { get; set; }
         #endregion
 
@@ -197,6 +274,9 @@ public Customer Customer
         /// One of: <c>always</c>, or <c>if_required</c>.
         /// </summary>
         [JsonProperty("customer_creation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_creation")]
+#endif
         public string CustomerCreation { get; set; }
 
         /// <summary>
@@ -204,6 +284,9 @@ public Customer Customer
         /// IDs. Customer's address details are not present on Sessions in <c>setup</c> mode.
         /// </summary>
         [JsonProperty("customer_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_details")]
+#endif
         public SessionCustomerDetails CustomerDetails { get; set; }
 
         /// <summary>
@@ -213,12 +296,18 @@ public Customer Customer
         /// the customer once the payment flow is complete, use the <c>customer</c> attribute.
         /// </summary>
         [JsonProperty("customer_email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_email")]
+#endif
         public string CustomerEmail { get; set; }
 
         /// <summary>
         /// List of coupons and promotion codes attached to the Checkout Session.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<SessionDiscount> Discounts { get; set; }
 
         /// <summary>
@@ -226,6 +315,10 @@ public Customer Customer
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime ExpiresAt { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         #region Expandable Invoice
@@ -235,6 +328,9 @@ public Customer Customer
         /// ID of the invoice created by the Checkout Session, if it exists.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string InvoiceId
         {
             get => this.InternalInvoice?.Id;
@@ -248,6 +344,9 @@ public string InvoiceId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Invoice Invoice
         {
             get => this.InternalInvoice?.ExpandedObject;
@@ -256,6 +355,10 @@ public Invoice Invoice
 
         [JsonProperty("invoice")]
         [JsonConverter(typeof(ExpandableFieldConverter<Invoice>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Invoice>))]
+#endif
         internal ExpandableField<Invoice> InternalInvoice { get; set; }
         #endregion
 
@@ -263,12 +366,18 @@ public Invoice Invoice
         /// Details on the state of invoice creation for the Checkout Session.
         /// </summary>
         [JsonProperty("invoice_creation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_creation")]
+#endif
         public SessionInvoiceCreation InvoiceCreation { get; set; }
 
         /// <summary>
         /// The line items purchased by the customer.
         /// </summary>
         [JsonProperty("line_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line_items")]
+#endif
         public StripeList<LineItem> LineItems { get; set; }
 
         /// <summary>
@@ -276,6 +385,9 @@ public Invoice Invoice
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -289,6 +401,9 @@ public Invoice Invoice
         /// <c>tr</c>, <c>vi</c>, <c>zh</c>, <c>zh-HK</c>, or <c>zh-TW</c>.
         /// </summary>
         [JsonProperty("locale")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("locale")]
+#endif
         public string Locale { get; set; }
 
         /// <summary>
@@ -297,6 +412,9 @@ public Invoice Invoice
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -304,6 +422,9 @@ public Invoice Invoice
         /// One of: <c>payment</c>, <c>setup</c>, or <c>subscription</c>.
         /// </summary>
         [JsonProperty("mode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mode")]
+#endif
         public string Mode { get; set; }
 
         #region Expandable PaymentIntent
@@ -316,6 +437,9 @@ public Invoice Invoice
         /// Session</a> instead.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string PaymentIntentId
         {
             get => this.InternalPaymentIntent?.Id;
@@ -332,6 +456,9 @@ public string PaymentIntentId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PaymentIntent PaymentIntent
         {
             get => this.InternalPaymentIntent?.ExpandedObject;
@@ -340,6 +467,10 @@ public PaymentIntent PaymentIntent
 
         [JsonProperty("payment_intent")]
         [JsonConverter(typeof(ExpandableFieldConverter<PaymentIntent>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_intent")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PaymentIntent>))]
+#endif
         internal ExpandableField<PaymentIntent> InternalPaymentIntent { get; set; }
         #endregion
 
@@ -350,6 +481,9 @@ public PaymentIntent PaymentIntent
         /// The ID of the Payment Link that created this Session.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string PaymentLinkId
         {
             get => this.InternalPaymentLink?.Id;
@@ -363,6 +497,9 @@ public string PaymentLinkId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PaymentLink PaymentLink
         {
             get => this.InternalPaymentLink?.ExpandedObject;
@@ -371,6 +508,10 @@ public PaymentLink PaymentLink
 
         [JsonProperty("payment_link")]
         [JsonConverter(typeof(ExpandableFieldConverter<PaymentLink>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_link")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PaymentLink>))]
+#endif
         internal ExpandableField<PaymentLink> InternalPaymentLink { get; set; }
         #endregion
 
@@ -380,6 +521,9 @@ public PaymentLink PaymentLink
         /// One of: <c>always</c>, or <c>if_required</c>.
         /// </summary>
         [JsonProperty("payment_method_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_collection")]
+#endif
         public string PaymentMethodCollection { get; set; }
 
         /// <summary>
@@ -387,6 +531,9 @@ public PaymentLink PaymentLink
         /// using dynamic payment methods.
         /// </summary>
         [JsonProperty("payment_method_configuration_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_configuration_details")]
+#endif
         public SessionPaymentMethodConfigurationDetails PaymentMethodConfigurationDetails { get; set; }
 
         /// <summary>
@@ -394,6 +541,9 @@ public PaymentLink PaymentLink
         /// CheckoutSession.
         /// </summary>
         [JsonProperty("payment_method_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_options")]
+#endif
         public SessionPaymentMethodOptions PaymentMethodOptions { get; set; }
 
         /// <summary>
@@ -401,6 +551,9 @@ public PaymentLink PaymentLink
         /// accept.
         /// </summary>
         [JsonProperty("payment_method_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_types")]
+#endif
         public List<string> PaymentMethodTypes { get; set; }
 
         /// <summary>
@@ -410,15 +563,24 @@ public PaymentLink PaymentLink
         /// One of: <c>no_payment_required</c>, <c>paid</c>, or <c>unpaid</c>.
         /// </summary>
         [JsonProperty("payment_status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_status")]
+#endif
         public string PaymentStatus { get; set; }
 
         [JsonProperty("phone_number_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone_number_collection")]
+#endif
         public SessionPhoneNumberCollection PhoneNumberCollection { get; set; }
 
         /// <summary>
         /// The ID of the original expired Checkout Session that triggered the recovery flow.
         /// </summary>
         [JsonProperty("recovered_from")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("recovered_from")]
+#endif
         public string RecoveredFrom { get; set; }
 
         /// <summary>
@@ -428,6 +590,9 @@ public PaymentLink PaymentLink
         /// One of: <c>always</c>, <c>if_required</c>, or <c>never</c>.
         /// </summary>
         [JsonProperty("redirect_on_completion")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("redirect_on_completion")]
+#endif
         public string RedirectOnCompletion { get; set; }
 
         /// <summary>
@@ -436,6 +601,9 @@ public PaymentLink PaymentLink
         /// app or site.
         /// </summary>
         [JsonProperty("return_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_url")]
+#endif
         public string ReturnUrl { get; set; }
 
         /// <summary>
@@ -443,6 +611,9 @@ public PaymentLink PaymentLink
         /// and <c>subscription</c> mode.
         /// </summary>
         [JsonProperty("saved_payment_method_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("saved_payment_method_options")]
+#endif
         public SessionSavedPaymentMethodOptions SavedPaymentMethodOptions { get; set; }
 
         #region Expandable SetupIntent
@@ -455,6 +626,9 @@ public PaymentLink PaymentLink
         /// Session</a> instead.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string SetupIntentId
         {
             get => this.InternalSetupIntent?.Id;
@@ -471,6 +645,9 @@ public string SetupIntentId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public SetupIntent SetupIntent
         {
             get => this.InternalSetupIntent?.ExpandedObject;
@@ -479,6 +656,10 @@ public SetupIntent SetupIntent
 
         [JsonProperty("setup_intent")]
         [JsonConverter(typeof(ExpandableFieldConverter<SetupIntent>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_intent")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<SetupIntent>))]
+#endif
         internal ExpandableField<SetupIntent> InternalSetupIntent { get; set; }
         #endregion
 
@@ -487,6 +668,9 @@ public SetupIntent SetupIntent
         /// customer.
         /// </summary>
         [JsonProperty("shipping_address_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_address_collection")]
+#endif
         public SessionShippingAddressCollection ShippingAddressCollection { get; set; }
 
         /// <summary>
@@ -494,18 +678,27 @@ public SetupIntent SetupIntent
         /// ShippingRate.
         /// </summary>
         [JsonProperty("shipping_cost")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_cost")]
+#endif
         public SessionShippingCost ShippingCost { get; set; }
 
         /// <summary>
         /// Shipping information for this Checkout Session.
         /// </summary>
         [JsonProperty("shipping_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_details")]
+#endif
         public SessionShippingDetails ShippingDetails { get; set; }
 
         /// <summary>
         /// The shipping rate options applied to this Session.
         /// </summary>
         [JsonProperty("shipping_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_options")]
+#endif
         public List<SessionShippingOption> ShippingOptions { get; set; }
 
         /// <summary>
@@ -514,6 +707,9 @@ public SetupIntent SetupIntent
         /// One of: <c>complete</c>, <c>expired</c>, or <c>open</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -524,6 +720,9 @@ public SetupIntent SetupIntent
         /// One of: <c>auto</c>, <c>book</c>, <c>donate</c>, <c>pay</c>, or <c>subscribe</c>.
         /// </summary>
         [JsonProperty("submit_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("submit_type")]
+#endif
         public string SubmitType { get; set; }
 
         #region Expandable Subscription
@@ -533,6 +732,9 @@ public SetupIntent SetupIntent
         /// The ID of the subscription for Checkout Sessions in <c>subscription</c> mode.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string SubscriptionId
         {
             get => this.InternalSubscription?.Id;
@@ -546,6 +748,9 @@ public string SubscriptionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Subscription Subscription
         {
             get => this.InternalSubscription?.ExpandedObject;
@@ -554,6 +759,10 @@ public Subscription Subscription
 
         [JsonProperty("subscription")]
         [JsonConverter(typeof(ExpandableFieldConverter<Subscription>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Subscription>))]
+#endif
         internal ExpandableField<Subscription> InternalSubscription { get; set; }
         #endregion
 
@@ -562,15 +771,24 @@ public Subscription Subscription
         /// successful.
         /// </summary>
         [JsonProperty("success_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("success_url")]
+#endif
         public string SuccessUrl { get; set; }
 
         [JsonProperty("tax_id_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_id_collection")]
+#endif
         public SessionTaxIdCollection TaxIdCollection { get; set; }
 
         /// <summary>
         /// Tax and discount details for the computed total amount.
         /// </summary>
         [JsonProperty("total_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("total_details")]
+#endif
         public SessionTotalDetails TotalDetails { get; set; }
 
         /// <summary>
@@ -578,6 +796,9 @@ public Subscription Subscription
         /// One of: <c>embedded</c>, or <c>hosted</c>.
         /// </summary>
         [JsonProperty("ui_mode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ui_mode")]
+#endif
         public string UiMode { get; set; }
 
         /// <summary>
@@ -588,6 +809,9 @@ public Subscription Subscription
         /// is only present when the session is active.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionAdaptivePricing.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionAdaptivePricing.cs
index f34f7cb346..99897344a0 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionAdaptivePricing.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionAdaptivePricing.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionAdaptivePricing : StripeEntity<SessionAdaptivePricing>
     {
@@ -9,6 +12,9 @@ public class SessionAdaptivePricing : StripeEntity<SessionAdaptivePricing>
         /// Whether Adaptive Pricing is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionAfterExpiration.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionAfterExpiration.cs
index fb6297f6e2..a0c9edce6a 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionAfterExpiration.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionAfterExpiration.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionAfterExpiration : StripeEntity<SessionAfterExpiration>
     {
@@ -9,6 +12,9 @@ public class SessionAfterExpiration : StripeEntity<SessionAfterExpiration>
         /// When set, configuration used to recover the Checkout Session on expiry.
         /// </summary>
         [JsonProperty("recovery")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("recovery")]
+#endif
         public SessionAfterExpirationRecovery Recovery { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionAfterExpirationRecovery.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionAfterExpirationRecovery.cs
index 7f6eab328f..6a816eb9fe 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionAfterExpirationRecovery.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionAfterExpirationRecovery.cs
@@ -4,6 +4,9 @@ namespace Stripe.Checkout
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionAfterExpirationRecovery : StripeEntity<SessionAfterExpirationRecovery>
     {
@@ -12,6 +15,9 @@ public class SessionAfterExpirationRecovery : StripeEntity<SessionAfterExpiratio
         /// <c>false</c>.
         /// </summary>
         [JsonProperty("allow_promotion_codes")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allow_promotion_codes")]
+#endif
         public bool AllowPromotionCodes { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class SessionAfterExpirationRecovery : StripeEntity<SessionAfterExpiratio
         /// object upon expiration.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         /// <summary>
@@ -27,6 +36,10 @@ public class SessionAfterExpirationRecovery : StripeEntity<SessionAfterExpiratio
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpiresAt { get; set; }
 
         /// <summary>
@@ -34,6 +47,9 @@ public class SessionAfterExpirationRecovery : StripeEntity<SessionAfterExpiratio
         /// Checkout Session.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionAutomaticTax.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionAutomaticTax.cs
index 8222cd26f5..1be8203d03 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionAutomaticTax.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionAutomaticTax.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionAutomaticTax : StripeEntity<SessionAutomaticTax>
     {
@@ -9,6 +12,9 @@ public class SessionAutomaticTax : StripeEntity<SessionAutomaticTax>
         /// Indicates whether automatic tax is enabled for the session.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class SessionAutomaticTax : StripeEntity<SessionAutomaticTax>
         /// transaction is returned in the report of the connected account.
         /// </summary>
         [JsonProperty("liability")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("liability")]
+#endif
         public SessionAutomaticTaxLiability Liability { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class SessionAutomaticTax : StripeEntity<SessionAutomaticTax>
         /// One of: <c>complete</c>, <c>failed</c>, or <c>requires_location_inputs</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionAutomaticTaxLiability.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionAutomaticTaxLiability.cs
index 713c9c3a4b..f636ce1cc1 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionAutomaticTaxLiability.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionAutomaticTaxLiability.cs
@@ -3,7 +3,13 @@ namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SessionAutomaticTaxLiability : StripeEntity<SessionAutomaticTaxLiability>
     {
         #region Expandable Account
@@ -13,6 +19,9 @@ public class SessionAutomaticTaxLiability : StripeEntity<SessionAutomaticTaxLiab
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AccountId
         {
             get => this.InternalAccount?.Id;
@@ -26,6 +35,9 @@ public string AccountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Account
         {
             get => this.InternalAccount?.ExpandedObject;
@@ -34,6 +46,10 @@ public Account Account
 
         [JsonProperty("account")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalAccount { get; set; }
         #endregion
 
@@ -42,6 +58,9 @@ public Account Account
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionCollectedInformation.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionCollectedInformation.cs
index e6acd937da..4350d1e01e 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionCollectedInformation.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionCollectedInformation.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCollectedInformation : StripeEntity<SessionCollectedInformation>
     {
@@ -9,6 +12,9 @@ public class SessionCollectedInformation : StripeEntity<SessionCollectedInformat
         /// Shipping information for this Checkout Session.
         /// </summary>
         [JsonProperty("shipping_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_details")]
+#endif
         public SessionCollectedInformationShippingDetails ShippingDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionCollectedInformationShippingDetails.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionCollectedInformationShippingDetails.cs
index 845b89761c..3adfce72eb 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionCollectedInformationShippingDetails.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionCollectedInformationShippingDetails.cs
@@ -2,28 +2,43 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCollectedInformationShippingDetails : StripeEntity<SessionCollectedInformationShippingDetails>
     {
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public Address Address { get; set; }
 
         /// <summary>
         /// The delivery service that shipped a physical product, such as Fedex, UPS, USPS, etc.
         /// </summary>
         [JsonProperty("carrier")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("carrier")]
+#endif
         public string Carrier { get; set; }
 
         /// <summary>
         /// Recipient name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// Recipient phone (including extension).
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
 
         /// <summary>
@@ -32,6 +47,9 @@ public class SessionCollectedInformationShippingDetails : StripeEntity<SessionCo
         /// commas.
         /// </summary>
         [JsonProperty("tracking_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tracking_number")]
+#endif
         public string TrackingNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionConsent.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionConsent.cs
index 41f1c4d5e0..a58443dec7 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionConsent.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionConsent.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionConsent : StripeEntity<SessionConsent>
     {
@@ -11,6 +14,9 @@ public class SessionConsent : StripeEntity<SessionConsent>
         /// One of: <c>opt_in</c>, or <c>opt_out</c>.
         /// </summary>
         [JsonProperty("promotions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotions")]
+#endif
         public string Promotions { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class SessionConsent : StripeEntity<SessionConsent>
         /// terms of service.
         /// </summary>
         [JsonProperty("terms_of_service")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("terms_of_service")]
+#endif
         public string TermsOfService { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionConsentCollection.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionConsentCollection.cs
index 52ea3d78be..50d37c5d99 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionConsentCollection.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionConsentCollection.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionConsentCollection : StripeEntity<SessionConsentCollection>
     {
@@ -10,6 +13,9 @@ public class SessionConsentCollection : StripeEntity<SessionConsentCollection>
         /// method.
         /// </summary>
         [JsonProperty("payment_method_reuse_agreement")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_reuse_agreement")]
+#endif
         public SessionConsentCollectionPaymentMethodReuseAgreement PaymentMethodReuseAgreement { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class SessionConsentCollection : StripeEntity<SessionConsentCollection>
         /// One of: <c>auto</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("promotions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotions")]
+#endif
         public string Promotions { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class SessionConsentCollection : StripeEntity<SessionConsentCollection>
         /// One of: <c>none</c>, or <c>required</c>.
         /// </summary>
         [JsonProperty("terms_of_service")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("terms_of_service")]
+#endif
         public string TermsOfService { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionConsentCollectionPaymentMethodReuseAgreement.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionConsentCollectionPaymentMethodReuseAgreement.cs
index af3ee13d5c..b75ab04757 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionConsentCollectionPaymentMethodReuseAgreement.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionConsentCollectionPaymentMethodReuseAgreement.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionConsentCollectionPaymentMethodReuseAgreement : StripeEntity<SessionConsentCollectionPaymentMethodReuseAgreement>
     {
@@ -14,6 +17,9 @@ public class SessionConsentCollectionPaymentMethodReuseAgreement : StripeEntity<
         /// One of: <c>auto</c>, or <c>hidden</c>.
         /// </summary>
         [JsonProperty("position")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("position")]
+#endif
         public string Position { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionCurrencyConversion.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionCurrencyConversion.cs
index ef717a8af9..4194573469 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionCurrencyConversion.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionCurrencyConversion.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCurrencyConversion : StripeEntity<SessionCurrencyConversion>
     {
@@ -9,24 +12,36 @@ public class SessionCurrencyConversion : StripeEntity<SessionCurrencyConversion>
         /// Total of all items in source currency before discounts or taxes are applied.
         /// </summary>
         [JsonProperty("amount_subtotal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_subtotal")]
+#endif
         public long AmountSubtotal { get; set; }
 
         /// <summary>
         /// Total of all items in source currency after discounts and taxes are applied.
         /// </summary>
         [JsonProperty("amount_total")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_total")]
+#endif
         public long AmountTotal { get; set; }
 
         /// <summary>
         /// Exchange rate used to convert source currency amounts to customer currency amounts.
         /// </summary>
         [JsonProperty("fx_rate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fx_rate")]
+#endif
         public decimal FxRate { get; set; }
 
         /// <summary>
         /// Creation currency of the CheckoutSession before localization.
         /// </summary>
         [JsonProperty("source_currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source_currency")]
+#endif
         public string SourceCurrency { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomField.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomField.cs
index d7d7b1b249..fb13307743 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomField.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomField.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCustomField : StripeEntity<SessionCustomField>
     {
         [JsonProperty("dropdown")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dropdown")]
+#endif
         public SessionCustomFieldDropdown Dropdown { get; set; }
 
         /// <summary>
@@ -13,12 +19,21 @@ public class SessionCustomField : StripeEntity<SessionCustomField>
         /// unique to this field, alphanumeric, and up to 200 characters.
         /// </summary>
         [JsonProperty("key")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("key")]
+#endif
         public string Key { get; set; }
 
         [JsonProperty("label")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("label")]
+#endif
         public SessionCustomFieldLabel Label { get; set; }
 
         [JsonProperty("numeric")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("numeric")]
+#endif
         public SessionCustomFieldNumeric Numeric { get; set; }
 
         /// <summary>
@@ -26,9 +41,15 @@ public class SessionCustomField : StripeEntity<SessionCustomField>
         /// Session. Defaults to <c>false</c>.
         /// </summary>
         [JsonProperty("optional")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("optional")]
+#endif
         public bool Optional { get; set; }
 
         [JsonProperty("text")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("text")]
+#endif
         public SessionCustomFieldText Text { get; set; }
 
         /// <summary>
@@ -36,6 +57,9 @@ public class SessionCustomField : StripeEntity<SessionCustomField>
         /// One of: <c>dropdown</c>, <c>numeric</c>, or <c>text</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomFieldDropdown.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomFieldDropdown.cs
index ceec7f4bbc..dd48c60530 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomFieldDropdown.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomFieldDropdown.cs
@@ -3,6 +3,9 @@ namespace Stripe.Checkout
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCustomFieldDropdown : StripeEntity<SessionCustomFieldDropdown>
     {
@@ -10,18 +13,27 @@ public class SessionCustomFieldDropdown : StripeEntity<SessionCustomFieldDropdow
         /// The value that will pre-fill on the payment page.
         /// </summary>
         [JsonProperty("default_value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_value")]
+#endif
         public string DefaultValue { get; set; }
 
         /// <summary>
         /// The options available for the customer to select. Up to 200 options allowed.
         /// </summary>
         [JsonProperty("options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("options")]
+#endif
         public List<SessionCustomFieldDropdownOption> Options { get; set; }
 
         /// <summary>
         /// The option selected by the customer. This will be the <c>value</c> for the option.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomFieldDropdownOption.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomFieldDropdownOption.cs
index de82c2e2c5..0c2d5b510f 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomFieldDropdownOption.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomFieldDropdownOption.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCustomFieldDropdownOption : StripeEntity<SessionCustomFieldDropdownOption>
     {
@@ -9,6 +12,9 @@ public class SessionCustomFieldDropdownOption : StripeEntity<SessionCustomFieldD
         /// The label for the option, displayed to the customer. Up to 100 characters.
         /// </summary>
         [JsonProperty("label")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("label")]
+#endif
         public string Label { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class SessionCustomFieldDropdownOption : StripeEntity<SessionCustomFieldD
         /// alphanumeric, and up to 100 characters.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomFieldLabel.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomFieldLabel.cs
index 78dc2cd4f2..39b434ab46 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomFieldLabel.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomFieldLabel.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCustomFieldLabel : StripeEntity<SessionCustomFieldLabel>
     {
@@ -9,12 +12,18 @@ public class SessionCustomFieldLabel : StripeEntity<SessionCustomFieldLabel>
         /// Custom text for the label, displayed to the customer. Up to 50 characters.
         /// </summary>
         [JsonProperty("custom")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom")]
+#endif
         public string Custom { get; set; }
 
         /// <summary>
         /// The type of the label.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomFieldNumeric.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomFieldNumeric.cs
index 2e11f0de13..53efe5fb7e 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomFieldNumeric.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomFieldNumeric.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCustomFieldNumeric : StripeEntity<SessionCustomFieldNumeric>
     {
@@ -9,24 +12,36 @@ public class SessionCustomFieldNumeric : StripeEntity<SessionCustomFieldNumeric>
         /// The value that will pre-fill the field on the payment page.
         /// </summary>
         [JsonProperty("default_value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_value")]
+#endif
         public string DefaultValue { get; set; }
 
         /// <summary>
         /// The maximum character length constraint for the customer's input.
         /// </summary>
         [JsonProperty("maximum_length")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("maximum_length")]
+#endif
         public long? MaximumLength { get; set; }
 
         /// <summary>
         /// The minimum character length requirement for the customer's input.
         /// </summary>
         [JsonProperty("minimum_length")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("minimum_length")]
+#endif
         public long? MinimumLength { get; set; }
 
         /// <summary>
         /// The value entered by the customer, containing only digits.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomFieldText.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomFieldText.cs
index 897588cd71..5be884376a 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomFieldText.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomFieldText.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCustomFieldText : StripeEntity<SessionCustomFieldText>
     {
@@ -9,24 +12,36 @@ public class SessionCustomFieldText : StripeEntity<SessionCustomFieldText>
         /// The value that will pre-fill the field on the payment page.
         /// </summary>
         [JsonProperty("default_value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_value")]
+#endif
         public string DefaultValue { get; set; }
 
         /// <summary>
         /// The maximum character length constraint for the customer's input.
         /// </summary>
         [JsonProperty("maximum_length")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("maximum_length")]
+#endif
         public long? MaximumLength { get; set; }
 
         /// <summary>
         /// The minimum character length requirement for the customer's input.
         /// </summary>
         [JsonProperty("minimum_length")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("minimum_length")]
+#endif
         public long? MinimumLength { get; set; }
 
         /// <summary>
         /// The value entered by the customer.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomText.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomText.cs
index d4dfc7a0d8..8328ddd1c8 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomText.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomText.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCustomText : StripeEntity<SessionCustomText>
     {
@@ -9,18 +12,27 @@ public class SessionCustomText : StripeEntity<SessionCustomText>
         /// Custom text that should be displayed after the payment confirmation button.
         /// </summary>
         [JsonProperty("after_submit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("after_submit")]
+#endif
         public SessionCustomTextAfterSubmit AfterSubmit { get; set; }
 
         /// <summary>
         /// Custom text that should be displayed alongside shipping address collection.
         /// </summary>
         [JsonProperty("shipping_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_address")]
+#endif
         public SessionCustomTextShippingAddress ShippingAddress { get; set; }
 
         /// <summary>
         /// Custom text that should be displayed alongside the payment confirmation button.
         /// </summary>
         [JsonProperty("submit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("submit")]
+#endif
         public SessionCustomTextSubmit Submit { get; set; }
 
         /// <summary>
@@ -28,6 +40,9 @@ public class SessionCustomText : StripeEntity<SessionCustomText>
         /// text.
         /// </summary>
         [JsonProperty("terms_of_service_acceptance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("terms_of_service_acceptance")]
+#endif
         public SessionCustomTextTermsOfServiceAcceptance TermsOfServiceAcceptance { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomTextAfterSubmit.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomTextAfterSubmit.cs
index 26e3abaef6..e7dc857efe 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomTextAfterSubmit.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomTextAfterSubmit.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCustomTextAfterSubmit : StripeEntity<SessionCustomTextAfterSubmit>
     {
@@ -9,6 +12,9 @@ public class SessionCustomTextAfterSubmit : StripeEntity<SessionCustomTextAfterS
         /// Text may be up to 1200 characters in length.
         /// </summary>
         [JsonProperty("message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("message")]
+#endif
         public string Message { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomTextShippingAddress.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomTextShippingAddress.cs
index d8c95e0d3a..3b6e9881b5 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomTextShippingAddress.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomTextShippingAddress.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCustomTextShippingAddress : StripeEntity<SessionCustomTextShippingAddress>
     {
@@ -9,6 +12,9 @@ public class SessionCustomTextShippingAddress : StripeEntity<SessionCustomTextSh
         /// Text may be up to 1200 characters in length.
         /// </summary>
         [JsonProperty("message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("message")]
+#endif
         public string Message { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomTextSubmit.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomTextSubmit.cs
index f21515bf7a..ad7d29bce2 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomTextSubmit.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomTextSubmit.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCustomTextSubmit : StripeEntity<SessionCustomTextSubmit>
     {
@@ -9,6 +12,9 @@ public class SessionCustomTextSubmit : StripeEntity<SessionCustomTextSubmit>
         /// Text may be up to 1200 characters in length.
         /// </summary>
         [JsonProperty("message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("message")]
+#endif
         public string Message { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomTextTermsOfServiceAcceptance.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomTextTermsOfServiceAcceptance.cs
index a0e483a00a..d17dd8a829 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomTextTermsOfServiceAcceptance.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomTextTermsOfServiceAcceptance.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCustomTextTermsOfServiceAcceptance : StripeEntity<SessionCustomTextTermsOfServiceAcceptance>
     {
@@ -9,6 +12,9 @@ public class SessionCustomTextTermsOfServiceAcceptance : StripeEntity<SessionCus
         /// Text may be up to 1200 characters in length.
         /// </summary>
         [JsonProperty("message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("message")]
+#endif
         public string Message { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomerDetails.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomerDetails.cs
index cb86f4b1dc..14d5bd6596 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomerDetails.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomerDetails.cs
@@ -3,6 +3,9 @@ namespace Stripe.Checkout
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCustomerDetails : StripeEntity<SessionCustomerDetails>
     {
@@ -11,6 +14,9 @@ public class SessionCustomerDetails : StripeEntity<SessionCustomerDetails>
         /// populated only for sessions on or after March 30, 2022.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public Address Address { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class SessionCustomerDetails : StripeEntity<SessionCustomerDetails>
         /// the customer on the Checkout form.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
@@ -27,12 +36,18 @@ public class SessionCustomerDetails : StripeEntity<SessionCustomerDetails>
         /// only for sessions on or after March 30, 2022.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// The customer's phone number after a completed Checkout Session.
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
 
         /// <summary>
@@ -40,12 +55,18 @@ public class SessionCustomerDetails : StripeEntity<SessionCustomerDetails>
         /// One of: <c>exempt</c>, <c>none</c>, or <c>reverse</c>.
         /// </summary>
         [JsonProperty("tax_exempt")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_exempt")]
+#endif
         public string TaxExempt { get; set; }
 
         /// <summary>
         /// The customer’s tax IDs after a completed Checkout Session.
         /// </summary>
         [JsonProperty("tax_ids")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_ids")]
+#endif
         public List<SessionCustomerDetailsTaxId> TaxIds { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomerDetailsTaxId.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomerDetailsTaxId.cs
index db268a6e57..a40e92c046 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomerDetailsTaxId.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionCustomerDetailsTaxId.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCustomerDetailsTaxId : StripeEntity<SessionCustomerDetailsTaxId>
     {
@@ -49,12 +52,18 @@ public class SessionCustomerDetailsTaxId : StripeEntity<SessionCustomerDetailsTa
         /// <c>ve_rif</c>, <c>vn_tin</c>, <c>za_vat</c>, <c>zm_tin</c>, or <c>zw_tin</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
         /// The value of the tax ID.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionDiscount.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionDiscount.cs
index 83b32758df..aecbe11f9b 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionDiscount.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionDiscount.cs
@@ -3,7 +3,13 @@ namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SessionDiscount : StripeEntity<SessionDiscount>
     {
         #region Expandable Coupon
@@ -13,6 +19,9 @@ public class SessionDiscount : StripeEntity<SessionDiscount>
         /// Coupon attached to the Checkout Session.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CouponId
         {
             get => this.InternalCoupon?.Id;
@@ -26,6 +35,9 @@ public string CouponId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Coupon Coupon
         {
             get => this.InternalCoupon?.ExpandedObject;
@@ -34,6 +46,10 @@ public Coupon Coupon
 
         [JsonProperty("coupon")]
         [JsonConverter(typeof(ExpandableFieldConverter<Coupon>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Coupon>))]
+#endif
         internal ExpandableField<Coupon> InternalCoupon { get; set; }
         #endregion
 
@@ -44,6 +60,9 @@ public Coupon Coupon
         /// Promotion code attached to the Checkout Session.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string PromotionCodeId
         {
             get => this.InternalPromotionCode?.Id;
@@ -57,6 +76,9 @@ public string PromotionCodeId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PromotionCode PromotionCode
         {
             get => this.InternalPromotionCode?.ExpandedObject;
@@ -65,6 +87,10 @@ public PromotionCode PromotionCode
 
         [JsonProperty("promotion_code")]
         [JsonConverter(typeof(ExpandableFieldConverter<PromotionCode>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotion_code")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PromotionCode>))]
+#endif
         internal ExpandableField<PromotionCode> InternalPromotionCode { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionInvoiceCreation.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionInvoiceCreation.cs
index 9804c3b9c6..4a375da329 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionInvoiceCreation.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionInvoiceCreation.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionInvoiceCreation : StripeEntity<SessionInvoiceCreation>
     {
@@ -9,9 +12,15 @@ public class SessionInvoiceCreation : StripeEntity<SessionInvoiceCreation>
         /// Indicates whether invoice creation is enabled for the Checkout Session.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         [JsonProperty("invoice_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_data")]
+#endif
         public SessionInvoiceCreationInvoiceData InvoiceData { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionInvoiceCreationInvoiceData.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionInvoiceCreationInvoiceData.cs
index f1cc6ce469..ba2d9888de 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionInvoiceCreationInvoiceData.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionInvoiceCreationInvoiceData.cs
@@ -5,7 +5,13 @@ namespace Stripe.Checkout
     using System.Linq;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SessionInvoiceCreationInvoiceData : StripeEntity<SessionInvoiceCreationInvoiceData>, IHasMetadata
     {
         #region Expandable AccountTaxIds
@@ -15,6 +21,9 @@ public class SessionInvoiceCreationInvoiceData : StripeEntity<SessionInvoiceCrea
         /// The account tax IDs associated with the invoice.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public List<string> AccountTaxIdIds
         {
             get => this.InternalAccountTaxIds?.Select((x) => x.Id).ToList();
@@ -28,6 +37,9 @@ public List<string> AccountTaxIdIds
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public List<TaxId> AccountTaxIds
         {
             get => this.InternalAccountTaxIds?.Select((x) => x.ExpandedObject).ToList();
@@ -35,6 +47,9 @@ public List<TaxId> AccountTaxIds
         }
 
         [JsonProperty("account_tax_ids", ItemConverterType = typeof(ExpandableFieldConverter<TaxId>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_tax_ids")]
+#endif
         internal List<ExpandableField<TaxId>> InternalAccountTaxIds { get; set; }
         #endregion
 
@@ -42,18 +57,27 @@ public List<TaxId> AccountTaxIds
         /// Custom fields displayed on the invoice.
         /// </summary>
         [JsonProperty("custom_fields")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_fields")]
+#endif
         public List<SessionInvoiceCreationInvoiceDataCustomField> CustomFields { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// Footer displayed on the invoice.
         /// </summary>
         [JsonProperty("footer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("footer")]
+#endif
         public string Footer { get; set; }
 
         /// <summary>
@@ -61,6 +85,9 @@ public List<TaxId> AccountTaxIds
         /// branding and support information of the specified account.
         /// </summary>
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public SessionInvoiceCreationInvoiceDataIssuer Issuer { get; set; }
 
         /// <summary>
@@ -69,12 +96,18 @@ public List<TaxId> AccountTaxIds
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Options for invoice PDF rendering.
         /// </summary>
         [JsonProperty("rendering_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("rendering_options")]
+#endif
         public SessionInvoiceCreationInvoiceDataRenderingOptions RenderingOptions { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionInvoiceCreationInvoiceDataCustomField.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionInvoiceCreationInvoiceDataCustomField.cs
index d33a5f5d62..25b63f12a9 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionInvoiceCreationInvoiceDataCustomField.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionInvoiceCreationInvoiceDataCustomField.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionInvoiceCreationInvoiceDataCustomField : StripeEntity<SessionInvoiceCreationInvoiceDataCustomField>
     {
@@ -9,12 +12,18 @@ public class SessionInvoiceCreationInvoiceDataCustomField : StripeEntity<Session
         /// The name of the custom field.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// The value of the custom field.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionInvoiceCreationInvoiceDataIssuer.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionInvoiceCreationInvoiceDataIssuer.cs
index 3adf789fdc..ce619be79b 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionInvoiceCreationInvoiceDataIssuer.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionInvoiceCreationInvoiceDataIssuer.cs
@@ -3,7 +3,13 @@ namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SessionInvoiceCreationInvoiceDataIssuer : StripeEntity<SessionInvoiceCreationInvoiceDataIssuer>
     {
         #region Expandable Account
@@ -13,6 +19,9 @@ public class SessionInvoiceCreationInvoiceDataIssuer : StripeEntity<SessionInvoi
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AccountId
         {
             get => this.InternalAccount?.Id;
@@ -26,6 +35,9 @@ public string AccountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Account
         {
             get => this.InternalAccount?.ExpandedObject;
@@ -34,6 +46,10 @@ public Account Account
 
         [JsonProperty("account")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalAccount { get; set; }
         #endregion
 
@@ -42,6 +58,9 @@ public Account Account
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionInvoiceCreationInvoiceDataRenderingOptions.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionInvoiceCreationInvoiceDataRenderingOptions.cs
index fad08a9035..8c00f9bf83 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionInvoiceCreationInvoiceDataRenderingOptions.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionInvoiceCreationInvoiceDataRenderingOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionInvoiceCreationInvoiceDataRenderingOptions : StripeEntity<SessionInvoiceCreationInvoiceDataRenderingOptions>
     {
@@ -9,6 +12,9 @@ public class SessionInvoiceCreationInvoiceDataRenderingOptions : StripeEntity<Se
         /// How line-item prices and amounts will be displayed with respect to tax on invoice PDFs.
         /// </summary>
         [JsonProperty("amount_tax_display")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_tax_display")]
+#endif
         public string AmountTaxDisplay { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodConfigurationDetails.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodConfigurationDetails.cs
index 62ffcde796..3a08e99934 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodConfigurationDetails.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodConfigurationDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodConfigurationDetails : StripeEntity<SessionPaymentMethodConfigurationDetails>, IHasId
     {
@@ -9,12 +12,18 @@ public class SessionPaymentMethodConfigurationDetails : StripeEntity<SessionPaym
         /// ID of the payment method configuration used.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// ID of the parent payment method configuration used.
         /// </summary>
         [JsonProperty("parent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("parent")]
+#endif
         public string Parent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptions.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptions.cs
index cd0a8c3cde..9b23cd94f1 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptions.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptions.cs
@@ -2,118 +2,232 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptions : StripeEntity<SessionPaymentMethodOptions>
     {
         [JsonProperty("acss_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acss_debit")]
+#endif
         public SessionPaymentMethodOptionsAcssDebit AcssDebit { get; set; }
 
         [JsonProperty("affirm")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("affirm")]
+#endif
         public SessionPaymentMethodOptionsAffirm Affirm { get; set; }
 
         [JsonProperty("afterpay_clearpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("afterpay_clearpay")]
+#endif
         public SessionPaymentMethodOptionsAfterpayClearpay AfterpayClearpay { get; set; }
 
         [JsonProperty("alipay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alipay")]
+#endif
         public SessionPaymentMethodOptionsAlipay Alipay { get; set; }
 
         [JsonProperty("amazon_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amazon_pay")]
+#endif
         public SessionPaymentMethodOptionsAmazonPay AmazonPay { get; set; }
 
         [JsonProperty("au_becs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("au_becs_debit")]
+#endif
         public SessionPaymentMethodOptionsAuBecsDebit AuBecsDebit { get; set; }
 
         [JsonProperty("bacs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bacs_debit")]
+#endif
         public SessionPaymentMethodOptionsBacsDebit BacsDebit { get; set; }
 
         [JsonProperty("bancontact")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bancontact")]
+#endif
         public SessionPaymentMethodOptionsBancontact Bancontact { get; set; }
 
         [JsonProperty("boleto")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("boleto")]
+#endif
         public SessionPaymentMethodOptionsBoleto Boleto { get; set; }
 
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public SessionPaymentMethodOptionsCard Card { get; set; }
 
         [JsonProperty("cashapp")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cashapp")]
+#endif
         public SessionPaymentMethodOptionsCashapp Cashapp { get; set; }
 
         [JsonProperty("customer_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_balance")]
+#endif
         public SessionPaymentMethodOptionsCustomerBalance CustomerBalance { get; set; }
 
         [JsonProperty("eps")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eps")]
+#endif
         public SessionPaymentMethodOptionsEps Eps { get; set; }
 
         [JsonProperty("fpx")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fpx")]
+#endif
         public SessionPaymentMethodOptionsFpx Fpx { get; set; }
 
         [JsonProperty("giropay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("giropay")]
+#endif
         public SessionPaymentMethodOptionsGiropay Giropay { get; set; }
 
         [JsonProperty("grabpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("grabpay")]
+#endif
         public SessionPaymentMethodOptionsGrabpay Grabpay { get; set; }
 
         [JsonProperty("ideal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ideal")]
+#endif
         public SessionPaymentMethodOptionsIdeal Ideal { get; set; }
 
         [JsonProperty("kakao_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kakao_pay")]
+#endif
         public SessionPaymentMethodOptionsKakaoPay KakaoPay { get; set; }
 
         [JsonProperty("klarna")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("klarna")]
+#endif
         public SessionPaymentMethodOptionsKlarna Klarna { get; set; }
 
         [JsonProperty("konbini")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("konbini")]
+#endif
         public SessionPaymentMethodOptionsKonbini Konbini { get; set; }
 
         [JsonProperty("kr_card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kr_card")]
+#endif
         public SessionPaymentMethodOptionsKrCard KrCard { get; set; }
 
         [JsonProperty("link")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("link")]
+#endif
         public SessionPaymentMethodOptionsLink Link { get; set; }
 
         [JsonProperty("mobilepay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mobilepay")]
+#endif
         public SessionPaymentMethodOptionsMobilepay Mobilepay { get; set; }
 
         [JsonProperty("multibanco")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("multibanco")]
+#endif
         public SessionPaymentMethodOptionsMultibanco Multibanco { get; set; }
 
         [JsonProperty("naver_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("naver_pay")]
+#endif
         public SessionPaymentMethodOptionsNaverPay NaverPay { get; set; }
 
         [JsonProperty("oxxo")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("oxxo")]
+#endif
         public SessionPaymentMethodOptionsOxxo Oxxo { get; set; }
 
         [JsonProperty("p24")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("p24")]
+#endif
         public SessionPaymentMethodOptionsP24 P24 { get; set; }
 
         [JsonProperty("payco")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payco")]
+#endif
         public SessionPaymentMethodOptionsPayco Payco { get; set; }
 
         [JsonProperty("paynow")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paynow")]
+#endif
         public SessionPaymentMethodOptionsPaynow Paynow { get; set; }
 
         [JsonProperty("paypal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paypal")]
+#endif
         public SessionPaymentMethodOptionsPaypal Paypal { get; set; }
 
         [JsonProperty("pix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pix")]
+#endif
         public SessionPaymentMethodOptionsPix Pix { get; set; }
 
         [JsonProperty("revolut_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("revolut_pay")]
+#endif
         public SessionPaymentMethodOptionsRevolutPay RevolutPay { get; set; }
 
         [JsonProperty("samsung_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("samsung_pay")]
+#endif
         public SessionPaymentMethodOptionsSamsungPay SamsungPay { get; set; }
 
         [JsonProperty("sepa_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_debit")]
+#endif
         public SessionPaymentMethodOptionsSepaDebit SepaDebit { get; set; }
 
         [JsonProperty("sofort")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sofort")]
+#endif
         public SessionPaymentMethodOptionsSofort Sofort { get; set; }
 
         [JsonProperty("swish")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("swish")]
+#endif
         public SessionPaymentMethodOptionsSwish Swish { get; set; }
 
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public SessionPaymentMethodOptionsUsBankAccount UsBankAccount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsAcssDebit.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsAcssDebit.cs
index 5b7464ac0d..8f75495db3 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsAcssDebit.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsAcssDebit.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsAcssDebit : StripeEntity<SessionPaymentMethodOptionsAcssDebit>
     {
@@ -11,9 +14,15 @@ public class SessionPaymentMethodOptionsAcssDebit : StripeEntity<SessionPaymentM
         /// One of: <c>cad</c>, or <c>usd</c>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public SessionPaymentMethodOptionsAcssDebitMandateOptions MandateOptions { get; set; }
 
         /// <summary>
@@ -38,6 +47,9 @@ public class SessionPaymentMethodOptionsAcssDebit : StripeEntity<SessionPaymentM
         /// One of: <c>none</c>, <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
@@ -46,6 +58,9 @@ public class SessionPaymentMethodOptionsAcssDebit : StripeEntity<SessionPaymentM
         /// and 15 calendar days from now.
         /// </summary>
         [JsonProperty("target_date")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("target_date")]
+#endif
         public string TargetDate { get; set; }
 
         /// <summary>
@@ -53,6 +68,9 @@ public class SessionPaymentMethodOptionsAcssDebit : StripeEntity<SessionPaymentM
         /// One of: <c>automatic</c>, <c>instant</c>, or <c>microdeposits</c>.
         /// </summary>
         [JsonProperty("verification_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification_method")]
+#endif
         public string VerificationMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsAcssDebitMandateOptions.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsAcssDebitMandateOptions.cs
index 0ead8fc61c..dcf3295d6a 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsAcssDebitMandateOptions.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsAcssDebitMandateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Checkout
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsAcssDebitMandateOptions : StripeEntity<SessionPaymentMethodOptionsAcssDebitMandateOptions>
     {
@@ -10,6 +13,9 @@ public class SessionPaymentMethodOptionsAcssDebitMandateOptions : StripeEntity<S
         /// A URL for custom mandate text.
         /// </summary>
         [JsonProperty("custom_mandate_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_mandate_url")]
+#endif
         public string CustomMandateUrl { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class SessionPaymentMethodOptionsAcssDebitMandateOptions : StripeEntity<S
         /// One of: <c>invoice</c>, or <c>subscription</c>.
         /// </summary>
         [JsonProperty("default_for")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_for")]
+#endif
         public List<string> DefaultFor { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class SessionPaymentMethodOptionsAcssDebitMandateOptions : StripeEntity<S
         /// 'interval' or 'combined'.
         /// </summary>
         [JsonProperty("interval_description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_description")]
+#endif
         public string IntervalDescription { get; set; }
 
         /// <summary>
@@ -32,6 +44,9 @@ public class SessionPaymentMethodOptionsAcssDebitMandateOptions : StripeEntity<S
         /// One of: <c>combined</c>, <c>interval</c>, or <c>sporadic</c>.
         /// </summary>
         [JsonProperty("payment_schedule")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_schedule")]
+#endif
         public string PaymentSchedule { get; set; }
 
         /// <summary>
@@ -39,6 +54,9 @@ public class SessionPaymentMethodOptionsAcssDebitMandateOptions : StripeEntity<S
         /// One of: <c>business</c>, or <c>personal</c>.
         /// </summary>
         [JsonProperty("transaction_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_type")]
+#endif
         public string TransactionType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsAffirm.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsAffirm.cs
index 36368ed53a..efde7441c7 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsAffirm.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsAffirm.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsAffirm : StripeEntity<SessionPaymentMethodOptionsAffirm>
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsAffirm : StripeEntity<SessionPaymentMeth
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsAfterpayClearpay.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsAfterpayClearpay.cs
index 8efc5f6ea8..6b81837e9b 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsAfterpayClearpay.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsAfterpayClearpay.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsAfterpayClearpay : StripeEntity<SessionPaymentMethodOptionsAfterpayClearpay>
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsAfterpayClearpay : StripeEntity<SessionP
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsAlipay.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsAlipay.cs
index 591f03ed78..cb3d2b4f43 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsAlipay.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsAlipay.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsAlipay : StripeEntity<SessionPaymentMethodOptionsAlipay>
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsAlipay : StripeEntity<SessionPaymentMeth
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsAmazonPay.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsAmazonPay.cs
index 1526d8dcd5..a2cb3986ba 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsAmazonPay.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsAmazonPay.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsAmazonPay : StripeEntity<SessionPaymentMethodOptionsAmazonPay>
     {
@@ -27,6 +30,9 @@ public class SessionPaymentMethodOptionsAmazonPay : StripeEntity<SessionPaymentM
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsAuBecsDebit.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsAuBecsDebit.cs
index c595530f90..f45df5aecc 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsAuBecsDebit.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsAuBecsDebit.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsAuBecsDebit : StripeEntity<SessionPaymentMethodOptionsAuBecsDebit>
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsAuBecsDebit : StripeEntity<SessionPaymen
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
@@ -34,6 +40,9 @@ public class SessionPaymentMethodOptionsAuBecsDebit : StripeEntity<SessionPaymen
         /// and 15 calendar days from now.
         /// </summary>
         [JsonProperty("target_date")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("target_date")]
+#endif
         public string TargetDate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsBacsDebit.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsBacsDebit.cs
index 3f24084011..3b3f7dd6f5 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsBacsDebit.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsBacsDebit.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsBacsDebit : StripeEntity<SessionPaymentMethodOptionsBacsDebit>
     {
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public SessionPaymentMethodOptionsBacsDebitMandateOptions MandateOptions { get; set; }
 
         /// <summary>
@@ -30,6 +36,9 @@ public class SessionPaymentMethodOptionsBacsDebit : StripeEntity<SessionPaymentM
         /// One of: <c>none</c>, <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
@@ -38,6 +47,9 @@ public class SessionPaymentMethodOptionsBacsDebit : StripeEntity<SessionPaymentM
         /// and 15 calendar days from now.
         /// </summary>
         [JsonProperty("target_date")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("target_date")]
+#endif
         public string TargetDate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsBacsDebitMandateOptions.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsBacsDebitMandateOptions.cs
index 16f1c33eb1..a45761f2e2 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsBacsDebitMandateOptions.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsBacsDebitMandateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsBacsDebitMandateOptions : StripeEntity<SessionPaymentMethodOptionsBacsDebitMandateOptions>
     {
@@ -11,6 +14,9 @@ public class SessionPaymentMethodOptionsBacsDebitMandateOptions : StripeEntity<S
         /// '/', '_', '-', '&amp;', '.'. Cannot begin with 'DDIC' or 'STRIPE'.
         /// </summary>
         [JsonProperty("reference_prefix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference_prefix")]
+#endif
         public string ReferencePrefix { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsBancontact.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsBancontact.cs
index 017fb4572c..7a90a181d4 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsBancontact.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsBancontact.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsBancontact : StripeEntity<SessionPaymentMethodOptionsBancontact>
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsBancontact : StripeEntity<SessionPayment
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsBoleto.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsBoleto.cs
index fa0ec0ef52..9657f99e94 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsBoleto.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsBoleto.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsBoleto : StripeEntity<SessionPaymentMethodOptionsBoleto>
     {
@@ -11,6 +14,9 @@ public class SessionPaymentMethodOptionsBoleto : StripeEntity<SessionPaymentMeth
         /// expire on Wednesday at 23:59 America/Sao_Paulo time.
         /// </summary>
         [JsonProperty("expires_after_days")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_after_days")]
+#endif
         public long ExpiresAfterDays { get; set; }
 
         /// <summary>
@@ -35,6 +41,9 @@ public class SessionPaymentMethodOptionsBoleto : StripeEntity<SessionPaymentMeth
         /// One of: <c>none</c>, <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsCard.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsCard.cs
index 32f1e3c655..47e9720ca7 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsCard.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsCard.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsCard : StripeEntity<SessionPaymentMethodOptionsCard>
     {
         [JsonProperty("installments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("installments")]
+#endif
         public SessionPaymentMethodOptionsCardInstallments Installments { get; set; }
 
         /// <summary>
@@ -14,6 +20,9 @@ public class SessionPaymentMethodOptionsCard : StripeEntity<SessionPaymentMethod
         /// One of: <c>if_available</c>, or <c>never</c>.
         /// </summary>
         [JsonProperty("request_extended_authorization")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_extended_authorization")]
+#endif
         public string RequestExtendedAuthorization { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class SessionPaymentMethodOptionsCard : StripeEntity<SessionPaymentMethod
         /// One of: <c>if_available</c>, or <c>never</c>.
         /// </summary>
         [JsonProperty("request_incremental_authorization")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_incremental_authorization")]
+#endif
         public string RequestIncrementalAuthorization { get; set; }
 
         /// <summary>
@@ -31,6 +43,9 @@ public class SessionPaymentMethodOptionsCard : StripeEntity<SessionPaymentMethod
         /// One of: <c>if_available</c>, or <c>never</c>.
         /// </summary>
         [JsonProperty("request_multicapture")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_multicapture")]
+#endif
         public string RequestMulticapture { get; set; }
 
         /// <summary>
@@ -39,6 +54,9 @@ public class SessionPaymentMethodOptionsCard : StripeEntity<SessionPaymentMethod
         /// One of: <c>if_available</c>, or <c>never</c>.
         /// </summary>
         [JsonProperty("request_overcapture")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_overcapture")]
+#endif
         public string RequestOvercapture { get; set; }
 
         /// <summary>
@@ -54,9 +72,15 @@ public class SessionPaymentMethodOptionsCard : StripeEntity<SessionPaymentMethod
         /// One of: <c>any</c>, <c>automatic</c>, or <c>challenge</c>.
         /// </summary>
         [JsonProperty("request_three_d_secure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_three_d_secure")]
+#endif
         public string RequestThreeDSecure { get; set; }
 
         [JsonProperty("restrictions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("restrictions")]
+#endif
         public SessionPaymentMethodOptionsCardRestrictions Restrictions { get; set; }
 
         /// <summary>
@@ -81,6 +105,9 @@ public class SessionPaymentMethodOptionsCard : StripeEntity<SessionPaymentMethod
         /// One of: <c>none</c>, <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
@@ -91,6 +118,9 @@ public class SessionPaymentMethodOptionsCard : StripeEntity<SessionPaymentMethod
         /// (including separators) will appear truncated to 22 characters.
         /// </summary>
         [JsonProperty("statement_descriptor_suffix_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_suffix_kana")]
+#endif
         public string StatementDescriptorSuffixKana { get; set; }
 
         /// <summary>
@@ -101,6 +131,9 @@ public class SessionPaymentMethodOptionsCard : StripeEntity<SessionPaymentMethod
         /// (including separators) will appear truncated to 17 characters.
         /// </summary>
         [JsonProperty("statement_descriptor_suffix_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_suffix_kanji")]
+#endif
         public string StatementDescriptorSuffixKanji { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsCardInstallments.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsCardInstallments.cs
index 231e368135..98b1c22a49 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsCardInstallments.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsCardInstallments.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsCardInstallments : StripeEntity<SessionPaymentMethodOptionsCardInstallments>
     {
@@ -9,6 +12,9 @@ public class SessionPaymentMethodOptionsCardInstallments : StripeEntity<SessionP
         /// Indicates if installments are enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsCardRestrictions.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsCardRestrictions.cs
index 7a104e8800..96feb641c7 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsCardRestrictions.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsCardRestrictions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Checkout
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsCardRestrictions : StripeEntity<SessionPaymentMethodOptionsCardRestrictions>
     {
@@ -13,6 +16,9 @@ public class SessionPaymentMethodOptionsCardRestrictions : StripeEntity<SessionP
         /// <c>visa</c>.
         /// </summary>
         [JsonProperty("brands_blocked")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brands_blocked")]
+#endif
         public List<string> BrandsBlocked { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsCashapp.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsCashapp.cs
index 8021b89cf0..9f5829444f 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsCashapp.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsCashapp.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsCashapp : StripeEntity<SessionPaymentMethodOptionsCashapp>
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsCashapp : StripeEntity<SessionPaymentMet
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsCustomerBalance.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsCustomerBalance.cs
index d2198c2703..4d6e267377 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsCustomerBalance.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsCustomerBalance.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsCustomerBalance : StripeEntity<SessionPaymentMethodOptionsCustomerBalance>
     {
         [JsonProperty("bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_transfer")]
+#endif
         public SessionPaymentMethodOptionsCustomerBalanceBankTransfer BankTransfer { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class SessionPaymentMethodOptionsCustomerBalance : StripeEntity<SessionPa
         /// balance. Permitted values include: <c>bank_transfer</c>.
         /// </summary>
         [JsonProperty("funding_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding_type")]
+#endif
         public string FundingType { get; set; }
 
         /// <summary>
@@ -36,6 +45,9 @@ public class SessionPaymentMethodOptionsCustomerBalance : StripeEntity<SessionPa
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsCustomerBalanceBankTransfer.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsCustomerBalanceBankTransfer.cs
index 110045ec43..d95862a13b 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsCustomerBalanceBankTransfer.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsCustomerBalanceBankTransfer.cs
@@ -3,10 +3,16 @@ namespace Stripe.Checkout
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsCustomerBalanceBankTransfer : StripeEntity<SessionPaymentMethodOptionsCustomerBalanceBankTransfer>
     {
         [JsonProperty("eu_bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eu_bank_transfer")]
+#endif
         public SessionPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfer EuBankTransfer { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class SessionPaymentMethodOptionsCustomerBalanceBankTransfer : StripeEnti
         /// <c>swift</c>, or <c>zengin</c>.
         /// </summary>
         [JsonProperty("requested_address_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested_address_types")]
+#endif
         public List<string> RequestedAddressTypes { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class SessionPaymentMethodOptionsCustomerBalanceBankTransfer : StripeEnti
         /// <c>mx_bank_transfer</c>, or <c>us_bank_transfer</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfer.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfer.cs
index 0a0a42ede4..e7c9f4f372 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfer.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfer.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfer : StripeEntity<SessionPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfer>
     {
@@ -11,6 +14,9 @@ public class SessionPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfe
         /// One of: <c>BE</c>, <c>DE</c>, <c>ES</c>, <c>FR</c>, <c>IE</c>, or <c>NL</c>.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsEps.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsEps.cs
index 812ef90672..1787e0db85 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsEps.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsEps.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsEps : StripeEntity<SessionPaymentMethodOptionsEps>
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsEps : StripeEntity<SessionPaymentMethodO
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsFpx.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsFpx.cs
index f721d52f1e..a99bfea91e 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsFpx.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsFpx.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsFpx : StripeEntity<SessionPaymentMethodOptionsFpx>
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsFpx : StripeEntity<SessionPaymentMethodO
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsGiropay.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsGiropay.cs
index e2604f2a53..81e898899c 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsGiropay.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsGiropay.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsGiropay : StripeEntity<SessionPaymentMethodOptionsGiropay>
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsGiropay : StripeEntity<SessionPaymentMet
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsGrabpay.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsGrabpay.cs
index 83f6114a8c..926fe23276 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsGrabpay.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsGrabpay.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsGrabpay : StripeEntity<SessionPaymentMethodOptionsGrabpay>
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsGrabpay : StripeEntity<SessionPaymentMet
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsIdeal.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsIdeal.cs
index d998e95dac..0cb7e86c1a 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsIdeal.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsIdeal.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsIdeal : StripeEntity<SessionPaymentMethodOptionsIdeal>
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsIdeal : StripeEntity<SessionPaymentMetho
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsKakaoPay.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsKakaoPay.cs
index 3e2c3e87c4..77e7e97af1 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsKakaoPay.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsKakaoPay.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsKakaoPay : StripeEntity<SessionPaymentMethodOptionsKakaoPay>
     {
@@ -9,6 +12,9 @@ public class SessionPaymentMethodOptionsKakaoPay : StripeEntity<SessionPaymentMe
         /// Controls when the funds will be captured from the customer's account.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
@@ -33,6 +39,9 @@ public class SessionPaymentMethodOptionsKakaoPay : StripeEntity<SessionPaymentMe
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsKlarna.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsKlarna.cs
index aed83fdc6b..6cfa6210fb 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsKlarna.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsKlarna.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsKlarna : StripeEntity<SessionPaymentMethodOptionsKlarna>
     {
@@ -27,6 +30,9 @@ public class SessionPaymentMethodOptionsKlarna : StripeEntity<SessionPaymentMeth
         /// One of: <c>none</c>, <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsKonbini.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsKonbini.cs
index 0af392279f..0bd42d970b 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsKonbini.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsKonbini.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsKonbini : StripeEntity<SessionPaymentMethodOptionsKonbini>
     {
@@ -12,6 +15,9 @@ public class SessionPaymentMethodOptionsKonbini : StripeEntity<SessionPaymentMet
         /// Wednesday 23:59:59 JST.
         /// </summary>
         [JsonProperty("expires_after_days")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_after_days")]
+#endif
         public long? ExpiresAfterDays { get; set; }
 
         /// <summary>
@@ -35,6 +41,9 @@ public class SessionPaymentMethodOptionsKonbini : StripeEntity<SessionPaymentMet
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsKrCard.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsKrCard.cs
index 0d4607da73..7aad11f1a5 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsKrCard.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsKrCard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsKrCard : StripeEntity<SessionPaymentMethodOptionsKrCard>
     {
@@ -9,6 +12,9 @@ public class SessionPaymentMethodOptionsKrCard : StripeEntity<SessionPaymentMeth
         /// Controls when the funds will be captured from the customer's account.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
@@ -33,6 +39,9 @@ public class SessionPaymentMethodOptionsKrCard : StripeEntity<SessionPaymentMeth
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsLink.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsLink.cs
index 54807a865f..6eadc4b822 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsLink.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsLink.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsLink : StripeEntity<SessionPaymentMethodOptionsLink>
     {
@@ -27,6 +30,9 @@ public class SessionPaymentMethodOptionsLink : StripeEntity<SessionPaymentMethod
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsMobilepay.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsMobilepay.cs
index f0bb317ed5..6b464884ed 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsMobilepay.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsMobilepay.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsMobilepay : StripeEntity<SessionPaymentMethodOptionsMobilepay>
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsMobilepay : StripeEntity<SessionPaymentM
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsMultibanco.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsMultibanco.cs
index 1dd3250e84..1cfb107f2f 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsMultibanco.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsMultibanco.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsMultibanco : StripeEntity<SessionPaymentMethodOptionsMultibanco>
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsMultibanco : StripeEntity<SessionPayment
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsNaverPay.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsNaverPay.cs
index af4c6d43a1..6ab99a48b0 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsNaverPay.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsNaverPay.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsNaverPay : StripeEntity<SessionPaymentMethodOptionsNaverPay>
     {
@@ -9,6 +12,9 @@ public class SessionPaymentMethodOptionsNaverPay : StripeEntity<SessionPaymentMe
         /// Controls when the funds will be captured from the customer's account.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsOxxo.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsOxxo.cs
index 46694e35f9..597bf7abbe 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsOxxo.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsOxxo.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsOxxo : StripeEntity<SessionPaymentMethodOptionsOxxo>
     {
@@ -11,6 +14,9 @@ public class SessionPaymentMethodOptionsOxxo : StripeEntity<SessionPaymentMethod
         /// expire on Wednesday at 23:59 America/Mexico_City time.
         /// </summary>
         [JsonProperty("expires_after_days")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_after_days")]
+#endif
         public long ExpiresAfterDays { get; set; }
 
         /// <summary>
@@ -34,6 +40,9 @@ public class SessionPaymentMethodOptionsOxxo : StripeEntity<SessionPaymentMethod
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsP24.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsP24.cs
index 711de56dda..c2bc8eb680 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsP24.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsP24.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsP24 : StripeEntity<SessionPaymentMethodOptionsP24>
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsP24 : StripeEntity<SessionPaymentMethodO
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsPayco.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsPayco.cs
index 5bb296f884..aa6068624c 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsPayco.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsPayco.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsPayco : StripeEntity<SessionPaymentMethodOptionsPayco>
     {
@@ -9,6 +12,9 @@ public class SessionPaymentMethodOptionsPayco : StripeEntity<SessionPaymentMetho
         /// Controls when the funds will be captured from the customer's account.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsPaynow.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsPaynow.cs
index eea7137b80..5d8f08111b 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsPaynow.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsPaynow.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsPaynow : StripeEntity<SessionPaymentMethodOptionsPaynow>
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsPaynow : StripeEntity<SessionPaymentMeth
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsPaypal.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsPaypal.cs
index d49b4fd1b2..f616470d0a 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsPaypal.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsPaypal.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsPaypal : StripeEntity<SessionPaymentMethodOptionsPaypal>
     {
@@ -9,12 +12,18 @@ public class SessionPaymentMethodOptionsPaypal : StripeEntity<SessionPaymentMeth
         /// Controls when the funds will be captured from the customer's account.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
         /// Preferred locale of the PayPal checkout page that the customer is redirected to.
         /// </summary>
         [JsonProperty("preferred_locale")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_locale")]
+#endif
         public string PreferredLocale { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class SessionPaymentMethodOptionsPaypal : StripeEntity<SessionPaymentMeth
         /// settings to block multiple payments per invoice ID.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
@@ -47,6 +59,9 @@ public class SessionPaymentMethodOptionsPaypal : StripeEntity<SessionPaymentMeth
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsPix.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsPix.cs
index dbee317157..1b40d4f683 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsPix.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsPix.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsPix : StripeEntity<SessionPaymentMethodOptionsPix>
     {
@@ -9,6 +12,9 @@ public class SessionPaymentMethodOptionsPix : StripeEntity<SessionPaymentMethodO
         /// The number of seconds after which Pix payment will expire.
         /// </summary>
         [JsonProperty("expires_after_seconds")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_after_seconds")]
+#endif
         public long? ExpiresAfterSeconds { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsRevolutPay.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsRevolutPay.cs
index 1b195b61bf..49dd4569b2 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsRevolutPay.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsRevolutPay.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsRevolutPay : StripeEntity<SessionPaymentMethodOptionsRevolutPay>
     {
@@ -27,6 +30,9 @@ public class SessionPaymentMethodOptionsRevolutPay : StripeEntity<SessionPayment
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsSamsungPay.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsSamsungPay.cs
index 769de024dd..8ed4fd79ff 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsSamsungPay.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsSamsungPay.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsSamsungPay : StripeEntity<SessionPaymentMethodOptionsSamsungPay>
     {
@@ -9,6 +12,9 @@ public class SessionPaymentMethodOptionsSamsungPay : StripeEntity<SessionPayment
         /// Controls when the funds will be captured from the customer's account.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsSepaDebit.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsSepaDebit.cs
index 962998ab8a..bb1e543017 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsSepaDebit.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsSepaDebit.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsSepaDebit : StripeEntity<SessionPaymentMethodOptionsSepaDebit>
     {
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public SessionPaymentMethodOptionsSepaDebitMandateOptions MandateOptions { get; set; }
 
         /// <summary>
@@ -30,6 +36,9 @@ public class SessionPaymentMethodOptionsSepaDebit : StripeEntity<SessionPaymentM
         /// One of: <c>none</c>, <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
@@ -38,6 +47,9 @@ public class SessionPaymentMethodOptionsSepaDebit : StripeEntity<SessionPaymentM
         /// and 15 calendar days from now.
         /// </summary>
         [JsonProperty("target_date")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("target_date")]
+#endif
         public string TargetDate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsSepaDebitMandateOptions.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsSepaDebitMandateOptions.cs
index e69046d7fc..03ef0161ec 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsSepaDebitMandateOptions.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsSepaDebitMandateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsSepaDebitMandateOptions : StripeEntity<SessionPaymentMethodOptionsSepaDebitMandateOptions>
     {
@@ -11,6 +14,9 @@ public class SessionPaymentMethodOptionsSepaDebitMandateOptions : StripeEntity<S
         /// '/', '_', '-', '&amp;', '.'. Cannot begin with 'STRIPE'.
         /// </summary>
         [JsonProperty("reference_prefix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference_prefix")]
+#endif
         public string ReferencePrefix { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsSofort.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsSofort.cs
index 7f9092b7c8..8e62969eae 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsSofort.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsSofort.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsSofort : StripeEntity<SessionPaymentMethodOptionsSofort>
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsSofort : StripeEntity<SessionPaymentMeth
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsSwish.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsSwish.cs
index 6c4a809454..cb23b3a4d4 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsSwish.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsSwish.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsSwish : StripeEntity<SessionPaymentMethodOptionsSwish>
     {
@@ -10,6 +13,9 @@ public class SessionPaymentMethodOptionsSwish : StripeEntity<SessionPaymentMetho
         /// Defaults to the <c>id</c> of the Payment Intent.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsUsBankAccount.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsUsBankAccount.cs
index 709ff02e1c..b5cead8e2f 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsUsBankAccount.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsUsBankAccount.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsUsBankAccount : StripeEntity<SessionPaymentMethodOptionsUsBankAccount>
     {
         [JsonProperty("financial_connections")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_connections")]
+#endif
         public SessionPaymentMethodOptionsUsBankAccountFinancialConnections FinancialConnections { get; set; }
 
         /// <summary>
@@ -30,6 +36,9 @@ public class SessionPaymentMethodOptionsUsBankAccount : StripeEntity<SessionPaym
         /// One of: <c>none</c>, <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
@@ -38,6 +47,9 @@ public class SessionPaymentMethodOptionsUsBankAccount : StripeEntity<SessionPaym
         /// and 15 calendar days from now.
         /// </summary>
         [JsonProperty("target_date")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("target_date")]
+#endif
         public string TargetDate { get; set; }
 
         /// <summary>
@@ -45,6 +57,9 @@ public class SessionPaymentMethodOptionsUsBankAccount : StripeEntity<SessionPaym
         /// One of: <c>automatic</c>, or <c>instant</c>.
         /// </summary>
         [JsonProperty("verification_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification_method")]
+#endif
         public string VerificationMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsUsBankAccountFinancialConnections.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsUsBankAccountFinancialConnections.cs
index 802f9f3b37..2749d9daa5 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsUsBankAccountFinancialConnections.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsUsBankAccountFinancialConnections.cs
@@ -3,10 +3,16 @@ namespace Stripe.Checkout
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsUsBankAccountFinancialConnections : StripeEntity<SessionPaymentMethodOptionsUsBankAccountFinancialConnections>
     {
         [JsonProperty("filters")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("filters")]
+#endif
         public SessionPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters Filters { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class SessionPaymentMethodOptionsUsBankAccountFinancialConnections : Stri
         /// <c>transactions</c>.
         /// </summary>
         [JsonProperty("permissions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("permissions")]
+#endif
         public List<string> Permissions { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class SessionPaymentMethodOptionsUsBankAccountFinancialConnections : Stri
         /// One of: <c>balances</c>, <c>ownership</c>, or <c>transactions</c>.
         /// </summary>
         [JsonProperty("prefetch")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("prefetch")]
+#endif
         public List<string> Prefetch { get; set; }
 
         /// <summary>
@@ -30,6 +42,9 @@ public class SessionPaymentMethodOptionsUsBankAccountFinancialConnections : Stri
         /// user will be redirected to this URL to return to your app.
         /// </summary>
         [JsonProperty("return_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_url")]
+#endif
         public string ReturnUrl { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters.cs
index e72ff3cad5..9b10964f4a 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters.cs
@@ -3,6 +3,9 @@ namespace Stripe.Checkout
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters : StripeEntity<SessionPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters>
     {
@@ -12,6 +15,9 @@ public class SessionPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters
         /// One of: <c>checking</c>, or <c>savings</c>.
         /// </summary>
         [JsonProperty("account_subcategories")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_subcategories")]
+#endif
         public List<string> AccountSubcategories { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionPhoneNumberCollection.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionPhoneNumberCollection.cs
index 2862b7d80c..27535233ac 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionPhoneNumberCollection.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionPhoneNumberCollection.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPhoneNumberCollection : StripeEntity<SessionPhoneNumberCollection>
     {
@@ -9,6 +12,9 @@ public class SessionPhoneNumberCollection : StripeEntity<SessionPhoneNumberColle
         /// Indicates whether phone number collection is enabled for the session.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionSavedPaymentMethodOptions.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionSavedPaymentMethodOptions.cs
index b1f9572d2b..08f0fd27e1 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionSavedPaymentMethodOptions.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionSavedPaymentMethodOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Checkout
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionSavedPaymentMethodOptions : StripeEntity<SessionSavedPaymentMethodOptions>
     {
@@ -13,6 +16,9 @@ public class SessionSavedPaymentMethodOptions : StripeEntity<SessionSavedPayment
         /// One of: <c>always</c>, <c>limited</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("allow_redisplay_filters")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allow_redisplay_filters")]
+#endif
         public List<string> AllowRedisplayFilters { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class SessionSavedPaymentMethodOptions : StripeEntity<SessionSavedPayment
         /// One of: <c>disabled</c>, or <c>enabled</c>.
         /// </summary>
         [JsonProperty("payment_method_remove")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_remove")]
+#endif
         public string PaymentMethodRemove { get; set; }
 
         /// <summary>
@@ -29,6 +38,9 @@ public class SessionSavedPaymentMethodOptions : StripeEntity<SessionSavedPayment
         /// One of: <c>disabled</c>, or <c>enabled</c>.
         /// </summary>
         [JsonProperty("payment_method_save")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_save")]
+#endif
         public string PaymentMethodSave { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionShippingAddressCollection.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionShippingAddressCollection.cs
index 751151dd03..b410d99726 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionShippingAddressCollection.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionShippingAddressCollection.cs
@@ -3,6 +3,9 @@ namespace Stripe.Checkout
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionShippingAddressCollection : StripeEntity<SessionShippingAddressCollection>
     {
@@ -42,6 +45,9 @@ public class SessionShippingAddressCollection : StripeEntity<SessionShippingAddr
         /// <c>XK</c>, <c>YE</c>, <c>YT</c>, <c>ZA</c>, <c>ZM</c>, <c>ZW</c>, or <c>ZZ</c>.
         /// </summary>
         [JsonProperty("allowed_countries")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allowed_countries")]
+#endif
         public List<string> AllowedCountries { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionShippingCost.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionShippingCost.cs
index 8dd6052218..7811ae854b 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionShippingCost.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionShippingCost.cs
@@ -4,25 +4,40 @@ namespace Stripe.Checkout
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SessionShippingCost : StripeEntity<SessionShippingCost>
     {
         /// <summary>
         /// Total shipping cost before any discounts or taxes are applied.
         /// </summary>
         [JsonProperty("amount_subtotal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_subtotal")]
+#endif
         public long AmountSubtotal { get; set; }
 
         /// <summary>
         /// Total tax amount applied due to shipping costs. If no tax was applied, defaults to 0.
         /// </summary>
         [JsonProperty("amount_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_tax")]
+#endif
         public long AmountTax { get; set; }
 
         /// <summary>
         /// Total shipping cost after discounts and taxes are applied.
         /// </summary>
         [JsonProperty("amount_total")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_total")]
+#endif
         public long AmountTotal { get; set; }
 
         #region Expandable ShippingRate
@@ -32,6 +47,9 @@ public class SessionShippingCost : StripeEntity<SessionShippingCost>
         /// The ID of the ShippingRate for this order.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ShippingRateId
         {
             get => this.InternalShippingRate?.Id;
@@ -45,6 +63,9 @@ public string ShippingRateId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public ShippingRate ShippingRate
         {
             get => this.InternalShippingRate?.ExpandedObject;
@@ -53,6 +74,10 @@ public ShippingRate ShippingRate
 
         [JsonProperty("shipping_rate")]
         [JsonConverter(typeof(ExpandableFieldConverter<ShippingRate>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_rate")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<ShippingRate>))]
+#endif
         internal ExpandableField<ShippingRate> InternalShippingRate { get; set; }
         #endregion
 
@@ -60,6 +85,9 @@ public ShippingRate ShippingRate
         /// The taxes applied to the shipping rate.
         /// </summary>
         [JsonProperty("taxes")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxes")]
+#endif
         public List<SessionShippingCostTax> Taxes { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionShippingCostTax.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionShippingCostTax.cs
index bf3fc45c94..fc48aadbd8 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionShippingCostTax.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionShippingCostTax.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionShippingCostTax : StripeEntity<SessionShippingCostTax>
     {
@@ -9,6 +12,9 @@ public class SessionShippingCostTax : StripeEntity<SessionShippingCostTax>
         /// Amount of tax applied for this rate.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class SessionShippingCostTax : StripeEntity<SessionShippingCostTax>
         /// Related guide: <a href="https://stripe.com/billing/taxes/tax-rates">Tax rates</a>.
         /// </summary>
         [JsonProperty("rate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("rate")]
+#endif
         public TaxRate Rate { get; set; }
 
         /// <summary>
@@ -33,12 +42,18 @@ public class SessionShippingCostTax : StripeEntity<SessionShippingCostTax>
         /// <c>standard_rated</c>, <c>taxable_basis_reduced</c>, or <c>zero_rated</c>.
         /// </summary>
         [JsonProperty("taxability_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxability_reason")]
+#endif
         public string TaxabilityReason { get; set; }
 
         /// <summary>
         /// The amount on which tax is calculated, in cents (or local equivalent).
         /// </summary>
         [JsonProperty("taxable_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxable_amount")]
+#endif
         public long? TaxableAmount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionShippingDetails.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionShippingDetails.cs
index 92de52b277..e5ff79c90f 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionShippingDetails.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionShippingDetails.cs
@@ -2,28 +2,43 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionShippingDetails : StripeEntity<SessionShippingDetails>
     {
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public Address Address { get; set; }
 
         /// <summary>
         /// The delivery service that shipped a physical product, such as Fedex, UPS, USPS, etc.
         /// </summary>
         [JsonProperty("carrier")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("carrier")]
+#endif
         public string Carrier { get; set; }
 
         /// <summary>
         /// Recipient name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// Recipient phone (including extension).
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
 
         /// <summary>
@@ -32,6 +47,9 @@ public class SessionShippingDetails : StripeEntity<SessionShippingDetails>
         /// commas.
         /// </summary>
         [JsonProperty("tracking_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tracking_number")]
+#endif
         public string TrackingNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionShippingOption.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionShippingOption.cs
index 5d63d2157e..ae62397f59 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionShippingOption.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionShippingOption.cs
@@ -3,13 +3,22 @@ namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SessionShippingOption : StripeEntity<SessionShippingOption>
     {
         /// <summary>
         /// A non-negative integer in cents representing how much to charge.
         /// </summary>
         [JsonProperty("shipping_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_amount")]
+#endif
         public long ShippingAmount { get; set; }
 
         #region Expandable ShippingRate
@@ -19,6 +28,9 @@ public class SessionShippingOption : StripeEntity<SessionShippingOption>
         /// The shipping rate.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ShippingRateId
         {
             get => this.InternalShippingRate?.Id;
@@ -32,6 +44,9 @@ public string ShippingRateId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public ShippingRate ShippingRate
         {
             get => this.InternalShippingRate?.ExpandedObject;
@@ -40,6 +55,10 @@ public ShippingRate ShippingRate
 
         [JsonProperty("shipping_rate")]
         [JsonConverter(typeof(ExpandableFieldConverter<ShippingRate>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_rate")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<ShippingRate>))]
+#endif
         internal ExpandableField<ShippingRate> InternalShippingRate { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionTaxIdCollection.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionTaxIdCollection.cs
index 08c29380c3..71a24cb7d7 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionTaxIdCollection.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionTaxIdCollection.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionTaxIdCollection : StripeEntity<SessionTaxIdCollection>
     {
@@ -9,6 +12,9 @@ public class SessionTaxIdCollection : StripeEntity<SessionTaxIdCollection>
         /// Indicates whether tax ID collection is enabled for the session.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class SessionTaxIdCollection : StripeEntity<SessionTaxIdCollection>
         /// One of: <c>if_supported</c>, or <c>never</c>.
         /// </summary>
         [JsonProperty("required")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("required")]
+#endif
         public string Required { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionTotalDetails.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionTotalDetails.cs
index eb672b7764..06709c348a 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionTotalDetails.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionTotalDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionTotalDetails : StripeEntity<SessionTotalDetails>
     {
@@ -9,21 +12,33 @@ public class SessionTotalDetails : StripeEntity<SessionTotalDetails>
         /// This is the sum of all the discounts.
         /// </summary>
         [JsonProperty("amount_discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_discount")]
+#endif
         public long AmountDiscount { get; set; }
 
         /// <summary>
         /// This is the sum of all the shipping amounts.
         /// </summary>
         [JsonProperty("amount_shipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_shipping")]
+#endif
         public long? AmountShipping { get; set; }
 
         /// <summary>
         /// This is the sum of all the tax amounts.
         /// </summary>
         [JsonProperty("amount_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_tax")]
+#endif
         public long AmountTax { get; set; }
 
         [JsonProperty("breakdown")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("breakdown")]
+#endif
         public SessionTotalDetailsBreakdown Breakdown { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionTotalDetailsBreakdown.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionTotalDetailsBreakdown.cs
index 9b41407510..4c05e3f61d 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionTotalDetailsBreakdown.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionTotalDetailsBreakdown.cs
@@ -3,6 +3,9 @@ namespace Stripe.Checkout
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionTotalDetailsBreakdown : StripeEntity<SessionTotalDetailsBreakdown>
     {
@@ -10,12 +13,18 @@ public class SessionTotalDetailsBreakdown : StripeEntity<SessionTotalDetailsBrea
         /// The aggregated discounts.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<SessionTotalDetailsBreakdownDiscount> Discounts { get; set; }
 
         /// <summary>
         /// The aggregated tax amounts by rate.
         /// </summary>
         [JsonProperty("taxes")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxes")]
+#endif
         public List<SessionTotalDetailsBreakdownTax> Taxes { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionTotalDetailsBreakdownDiscount.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionTotalDetailsBreakdownDiscount.cs
index 861fc3aa85..37401dd67b 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionTotalDetailsBreakdownDiscount.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionTotalDetailsBreakdownDiscount.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionTotalDetailsBreakdownDiscount : StripeEntity<SessionTotalDetailsBreakdownDiscount>
     {
@@ -9,6 +12,9 @@ public class SessionTotalDetailsBreakdownDiscount : StripeEntity<SessionTotalDet
         /// The amount discounted.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -22,6 +28,9 @@ public class SessionTotalDetailsBreakdownDiscount : StripeEntity<SessionTotalDet
         /// subscriptions</a>.
         /// </summary>
         [JsonProperty("discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+#endif
         public Discount Discount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Checkout/Sessions/SessionTotalDetailsBreakdownTax.cs b/src/Stripe.net/Entities/Checkout/Sessions/SessionTotalDetailsBreakdownTax.cs
index b71a33d137..2e59e9b79c 100644
--- a/src/Stripe.net/Entities/Checkout/Sessions/SessionTotalDetailsBreakdownTax.cs
+++ b/src/Stripe.net/Entities/Checkout/Sessions/SessionTotalDetailsBreakdownTax.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionTotalDetailsBreakdownTax : StripeEntity<SessionTotalDetailsBreakdownTax>
     {
@@ -9,6 +12,9 @@ public class SessionTotalDetailsBreakdownTax : StripeEntity<SessionTotalDetailsB
         /// Amount of tax applied for this rate.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class SessionTotalDetailsBreakdownTax : StripeEntity<SessionTotalDetailsB
         /// Related guide: <a href="https://stripe.com/billing/taxes/tax-rates">Tax rates</a>.
         /// </summary>
         [JsonProperty("rate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("rate")]
+#endif
         public TaxRate Rate { get; set; }
 
         /// <summary>
@@ -33,12 +42,18 @@ public class SessionTotalDetailsBreakdownTax : StripeEntity<SessionTotalDetailsB
         /// <c>standard_rated</c>, <c>taxable_basis_reduced</c>, or <c>zero_rated</c>.
         /// </summary>
         [JsonProperty("taxability_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxability_reason")]
+#endif
         public string TaxabilityReason { get; set; }
 
         /// <summary>
         /// The amount on which tax is calculated, in cents (or local equivalent).
         /// </summary>
         [JsonProperty("taxable_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxable_amount")]
+#endif
         public long? TaxableAmount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Climate/Orders/Order.cs b/src/Stripe.net/Entities/Climate/Orders/Order.cs
index 3d15acaf39..624b4b068c 100644
--- a/src/Stripe.net/Entities/Climate/Orders/Order.cs
+++ b/src/Stripe.net/Entities/Climate/Orders/Order.cs
@@ -5,23 +5,35 @@ namespace Stripe.Climate
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Orders represent your intent to purchase a particular Climate product. When you create
     /// an order, the payment is deducted from your merchant balance.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class Order : StripeEntity<Order>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -29,21 +41,33 @@ public class Order : StripeEntity<Order>, IHasId, IHasMetadata, IHasObject
         /// the currency's smallest unit.
         /// </summary>
         [JsonProperty("amount_fees")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_fees")]
+#endif
         public long AmountFees { get; set; }
 
         /// <summary>
         /// Total amount of the carbon removal in the currency's smallest unit.
         /// </summary>
         [JsonProperty("amount_subtotal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_subtotal")]
+#endif
         public long AmountSubtotal { get; set; }
 
         /// <summary>
         /// Total amount of the order including fees in the currency's smallest unit.
         /// </summary>
         [JsonProperty("amount_total")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_total")]
+#endif
         public long AmountTotal { get; set; }
 
         [JsonProperty("beneficiary")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("beneficiary")]
+#endif
         public OrderBeneficiary Beneficiary { get; set; }
 
         /// <summary>
@@ -51,6 +75,10 @@ public class Order : StripeEntity<Order>, IHasId, IHasMetadata, IHasObject
         /// </summary>
         [JsonProperty("canceled_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("canceled_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? CanceledAt { get; set; }
 
         /// <summary>
@@ -58,12 +86,18 @@ public class Order : StripeEntity<Order>, IHasId, IHasMetadata, IHasObject
         /// One of: <c>expired</c>, <c>product_unavailable</c>, or <c>requested</c>.
         /// </summary>
         [JsonProperty("cancellation_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancellation_reason")]
+#endif
         public string CancellationReason { get; set; }
 
         /// <summary>
         /// For delivered orders, a URL to a delivery certificate for the order.
         /// </summary>
         [JsonProperty("certificate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("certificate")]
+#endif
         public string Certificate { get; set; }
 
         /// <summary>
@@ -71,6 +105,10 @@ public class Order : StripeEntity<Order>, IHasId, IHasMetadata, IHasObject
         /// </summary>
         [JsonProperty("confirmed_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("confirmed_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ConfirmedAt { get; set; }
 
         /// <summary>
@@ -78,6 +116,10 @@ public class Order : StripeEntity<Order>, IHasId, IHasMetadata, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -85,6 +127,9 @@ public class Order : StripeEntity<Order>, IHasId, IHasMetadata, IHasObject
         /// code</a>, in lowercase, representing the currency for this order.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -93,6 +138,10 @@ public class Order : StripeEntity<Order>, IHasId, IHasMetadata, IHasObject
         /// </summary>
         [JsonProperty("delayed_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("delayed_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? DelayedAt { get; set; }
 
         /// <summary>
@@ -100,18 +149,28 @@ public class Order : StripeEntity<Order>, IHasId, IHasMetadata, IHasObject
         /// </summary>
         [JsonProperty("delivered_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("delivered_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? DeliveredAt { get; set; }
 
         /// <summary>
         /// Details about the delivery of carbon removal for this order.
         /// </summary>
         [JsonProperty("delivery_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("delivery_details")]
+#endif
         public List<OrderDeliveryDetail> DeliveryDetails { get; set; }
 
         /// <summary>
         /// The year this order is expected to be delivered.
         /// </summary>
         [JsonProperty("expected_delivery_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expected_delivery_year")]
+#endif
         public long ExpectedDeliveryYear { get; set; }
 
         /// <summary>
@@ -119,6 +178,9 @@ public class Order : StripeEntity<Order>, IHasId, IHasMetadata, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -127,12 +189,18 @@ public class Order : StripeEntity<Order>, IHasId, IHasMetadata, IHasObject
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Quantity of carbon removal that is included in this order.
         /// </summary>
         [JsonProperty("metric_tons")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metric_tons")]
+#endif
         public decimal MetricTons { get; set; }
 
         #region Expandable Product
@@ -142,6 +210,9 @@ public class Order : StripeEntity<Order>, IHasId, IHasMetadata, IHasObject
         /// Unique ID for the Climate <c>Product</c> this order is purchasing.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ProductId
         {
             get => this.InternalProduct?.Id;
@@ -155,6 +226,9 @@ public string ProductId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Product Product
         {
             get => this.InternalProduct?.ExpandedObject;
@@ -163,6 +237,10 @@ public Product Product
 
         [JsonProperty("product")]
         [JsonConverter(typeof(ExpandableFieldConverter<Product>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Product>))]
+#endif
         internal ExpandableField<Product> InternalProduct { get; set; }
         #endregion
 
@@ -172,6 +250,10 @@ public Product Product
         /// </summary>
         [JsonProperty("product_substituted_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_substituted_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ProductSubstitutedAt { get; set; }
 
         /// <summary>
@@ -180,6 +262,9 @@ public Product Product
         /// <c>open</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Climate/Orders/OrderBeneficiary.cs b/src/Stripe.net/Entities/Climate/Orders/OrderBeneficiary.cs
index 72a9cf6573..05920d99db 100644
--- a/src/Stripe.net/Entities/Climate/Orders/OrderBeneficiary.cs
+++ b/src/Stripe.net/Entities/Climate/Orders/OrderBeneficiary.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Climate
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OrderBeneficiary : StripeEntity<OrderBeneficiary>
     {
@@ -9,6 +12,9 @@ public class OrderBeneficiary : StripeEntity<OrderBeneficiary>
         /// Publicly displayable name for the end beneficiary of carbon removal.
         /// </summary>
         [JsonProperty("public_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("public_name")]
+#endif
         public string PublicName { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Climate/Orders/OrderDeliveryDetail.cs b/src/Stripe.net/Entities/Climate/Orders/OrderDeliveryDetail.cs
index ef371a5822..83e5ca5e68 100644
--- a/src/Stripe.net/Entities/Climate/Orders/OrderDeliveryDetail.cs
+++ b/src/Stripe.net/Entities/Climate/Orders/OrderDeliveryDetail.cs
@@ -4,6 +4,9 @@ namespace Stripe.Climate
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OrderDeliveryDetail : StripeEntity<OrderDeliveryDetail>
     {
@@ -12,30 +15,46 @@ public class OrderDeliveryDetail : StripeEntity<OrderDeliveryDetail>
         /// </summary>
         [JsonProperty("delivered_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("delivered_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime DeliveredAt { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// Specific location of this delivery.
         /// </summary>
         [JsonProperty("location")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("location")]
+#endif
         public OrderDeliveryDetailLocation Location { get; set; }
 
         /// <summary>
         /// Quantity of carbon removal supplied by this delivery.
         /// </summary>
         [JsonProperty("metric_tons")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metric_tons")]
+#endif
         public string MetricTons { get; set; }
 
         /// <summary>
         /// Once retired, a URL to the registry entry for the tons from this delivery.
         /// </summary>
         [JsonProperty("registry_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("registry_url")]
+#endif
         public string RegistryUrl { get; set; }
 
         /// <summary>
         /// A supplier of carbon removal.
         /// </summary>
         [JsonProperty("supplier")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("supplier")]
+#endif
         public Supplier Supplier { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Climate/Orders/OrderDeliveryDetailLocation.cs b/src/Stripe.net/Entities/Climate/Orders/OrderDeliveryDetailLocation.cs
index c94ede0be0..1756ceb92d 100644
--- a/src/Stripe.net/Entities/Climate/Orders/OrderDeliveryDetailLocation.cs
+++ b/src/Stripe.net/Entities/Climate/Orders/OrderDeliveryDetailLocation.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Climate
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OrderDeliveryDetailLocation : StripeEntity<OrderDeliveryDetailLocation>
     {
@@ -9,30 +12,45 @@ public class OrderDeliveryDetailLocation : StripeEntity<OrderDeliveryDetailLocat
         /// The city where the supplier is located.
         /// </summary>
         [JsonProperty("city")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("city")]
+#endif
         public string City { get; set; }
 
         /// <summary>
         /// Two-letter ISO code representing the country where the supplier is located.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
         /// The geographic latitude where the supplier is located.
         /// </summary>
         [JsonProperty("latitude")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("latitude")]
+#endif
         public decimal? Latitude { get; set; }
 
         /// <summary>
         /// The geographic longitude where the supplier is located.
         /// </summary>
         [JsonProperty("longitude")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("longitude")]
+#endif
         public decimal? Longitude { get; set; }
 
         /// <summary>
         /// The state/county/province/region where the supplier is located.
         /// </summary>
         [JsonProperty("region")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("region")]
+#endif
         public string Region { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Climate/Products/Product.cs b/src/Stripe.net/Entities/Climate/Products/Product.cs
index 01a05ce9eb..3c0d044f9a 100644
--- a/src/Stripe.net/Entities/Climate/Products/Product.cs
+++ b/src/Stripe.net/Entities/Climate/Products/Product.cs
@@ -5,6 +5,9 @@ namespace Stripe.Climate
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A Climate product represents a type of carbon removal unit available for reservation.
@@ -19,12 +22,18 @@ public class Product : StripeEntity<Product>, IHasId, IHasObject
         /// inventory</a> for a list of available carbon removal products.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -32,18 +41,28 @@ public class Product : StripeEntity<Product>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// Current prices for a metric ton of carbon removal in a currency's smallest unit.
         /// </summary>
         [JsonProperty("current_prices_per_metric_ton")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("current_prices_per_metric_ton")]
+#endif
         public Dictionary<string, ProductCurrentPricesPerMetricTon> CurrentPricesPerMetricTon { get; set; }
 
         /// <summary>
         /// The year in which the carbon removal is expected to be delivered.
         /// </summary>
         [JsonProperty("delivery_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("delivery_year")]
+#endif
         public long? DeliveryYear { get; set; }
 
         /// <summary>
@@ -51,24 +70,36 @@ public class Product : StripeEntity<Product>, IHasId, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
         /// The quantity of metric tons available for reservation.
         /// </summary>
         [JsonProperty("metric_tons_available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metric_tons_available")]
+#endif
         public decimal MetricTonsAvailable { get; set; }
 
         /// <summary>
         /// The Climate product's name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// The carbon removal suppliers that fulfill orders for this Climate product.
         /// </summary>
         [JsonProperty("suppliers")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("suppliers")]
+#endif
         public List<Supplier> Suppliers { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Climate/Products/ProductCurrentPricesPerMetricTon.cs b/src/Stripe.net/Entities/Climate/Products/ProductCurrentPricesPerMetricTon.cs
index 29cbde6eb2..d296cda7ba 100644
--- a/src/Stripe.net/Entities/Climate/Products/ProductCurrentPricesPerMetricTon.cs
+++ b/src/Stripe.net/Entities/Climate/Products/ProductCurrentPricesPerMetricTon.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Climate
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ProductCurrentPricesPerMetricTon : StripeEntity<ProductCurrentPricesPerMetricTon>
     {
@@ -9,6 +12,9 @@ public class ProductCurrentPricesPerMetricTon : StripeEntity<ProductCurrentPrice
         /// Fees for one metric ton of carbon removal in the currency's smallest unit.
         /// </summary>
         [JsonProperty("amount_fees")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_fees")]
+#endif
         public long AmountFees { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class ProductCurrentPricesPerMetricTon : StripeEntity<ProductCurrentPrice
         /// smallest unit.
         /// </summary>
         [JsonProperty("amount_subtotal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_subtotal")]
+#endif
         public long AmountSubtotal { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ProductCurrentPricesPerMetricTon : StripeEntity<ProductCurrentPrice
         /// unit.
         /// </summary>
         [JsonProperty("amount_total")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_total")]
+#endif
         public long AmountTotal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Climate/Suppliers/Supplier.cs b/src/Stripe.net/Entities/Climate/Suppliers/Supplier.cs
index e28c08aab4..f6e41c23f0 100644
--- a/src/Stripe.net/Entities/Climate/Suppliers/Supplier.cs
+++ b/src/Stripe.net/Entities/Climate/Suppliers/Supplier.cs
@@ -3,6 +3,9 @@ namespace Stripe.Climate
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A supplier of carbon removal.
@@ -13,18 +16,27 @@ public class Supplier : StripeEntity<Supplier>, IHasId, IHasObject
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object’s type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Link to a webpage to learn more about the supplier.
         /// </summary>
         [JsonProperty("info_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("info_url")]
+#endif
         public string InfoUrl { get; set; }
 
         /// <summary>
@@ -32,18 +44,27 @@ public class Supplier : StripeEntity<Supplier>, IHasId, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
         /// The locations in which this supplier operates.
         /// </summary>
         [JsonProperty("locations")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("locations")]
+#endif
         public List<SupplierLocation> Locations { get; set; }
 
         /// <summary>
         /// Name of this carbon removal supplier.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -52,6 +73,9 @@ public class Supplier : StripeEntity<Supplier>, IHasId, IHasObject
         /// <c>enhanced_weathering</c>.
         /// </summary>
         [JsonProperty("removal_pathway")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("removal_pathway")]
+#endif
         public string RemovalPathway { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Climate/Suppliers/SupplierLocation.cs b/src/Stripe.net/Entities/Climate/Suppliers/SupplierLocation.cs
index 244985b13f..1595c7f336 100644
--- a/src/Stripe.net/Entities/Climate/Suppliers/SupplierLocation.cs
+++ b/src/Stripe.net/Entities/Climate/Suppliers/SupplierLocation.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Climate
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SupplierLocation : StripeEntity<SupplierLocation>
     {
@@ -9,30 +12,45 @@ public class SupplierLocation : StripeEntity<SupplierLocation>
         /// The city where the supplier is located.
         /// </summary>
         [JsonProperty("city")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("city")]
+#endif
         public string City { get; set; }
 
         /// <summary>
         /// Two-letter ISO code representing the country where the supplier is located.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
         /// The geographic latitude where the supplier is located.
         /// </summary>
         [JsonProperty("latitude")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("latitude")]
+#endif
         public decimal? Latitude { get; set; }
 
         /// <summary>
         /// The geographic longitude where the supplier is located.
         /// </summary>
         [JsonProperty("longitude")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("longitude")]
+#endif
         public decimal? Longitude { get; set; }
 
         /// <summary>
         /// The state/county/province/region where the supplier is located.
         /// </summary>
         [JsonProperty("region")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("region")]
+#endif
         public string Region { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationToken.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationToken.cs
index bcc9c977c7..2885b4ee88 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationToken.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationToken.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// ConfirmationTokens help transport client side data collected by Stripe JS over to your
@@ -22,12 +25,18 @@ public class ConfirmationToken : StripeEntity<ConfirmationToken>, IHasId, IHasOb
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -35,6 +44,10 @@ public class ConfirmationToken : StripeEntity<ConfirmationToken>, IHasId, IHasOb
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -43,6 +56,10 @@ public class ConfirmationToken : StripeEntity<ConfirmationToken>, IHasId, IHasOb
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpiresAt { get; set; }
 
         /// <summary>
@@ -50,12 +67,18 @@ public class ConfirmationToken : StripeEntity<ConfirmationToken>, IHasId, IHasOb
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
         /// Data used for generating a Mandate.
         /// </summary>
         [JsonProperty("mandate_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_data")]
+#endif
         public ConfirmationTokenMandateData MandateData { get; set; }
 
         /// <summary>
@@ -63,12 +86,18 @@ public class ConfirmationToken : StripeEntity<ConfirmationToken>, IHasId, IHasOb
         /// ConfirmationToken has not yet been used.
         /// </summary>
         [JsonProperty("payment_intent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_intent")]
+#endif
         public string PaymentIntent { get; set; }
 
         /// <summary>
         /// Payment-method-specific configuration for this ConfirmationToken.
         /// </summary>
         [JsonProperty("payment_method_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_options")]
+#endif
         public ConfirmationTokenPaymentMethodOptions PaymentMethodOptions { get; set; }
 
         /// <summary>
@@ -76,12 +105,18 @@ public class ConfirmationToken : StripeEntity<ConfirmationToken>, IHasId, IHasOb
         /// PaymentIntent or SetupIntent is confirmed with this ConfirmationToken.
         /// </summary>
         [JsonProperty("payment_method_preview")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_preview")]
+#endif
         public ConfirmationTokenPaymentMethodPreview PaymentMethodPreview { get; set; }
 
         /// <summary>
         /// Return URL used to confirm the Intent.
         /// </summary>
         [JsonProperty("return_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_url")]
+#endif
         public string ReturnUrl { get; set; }
 
         /// <summary>
@@ -95,6 +130,9 @@ public class ConfirmationToken : StripeEntity<ConfirmationToken>, IHasId, IHasOb
         /// One of: <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
@@ -102,12 +140,18 @@ public class ConfirmationToken : StripeEntity<ConfirmationToken>, IHasId, IHasOb
         /// ConfirmationToken has not yet been used.
         /// </summary>
         [JsonProperty("setup_intent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_intent")]
+#endif
         public string SetupIntent { get; set; }
 
         /// <summary>
         /// Shipping information collected on this ConfirmationToken.
         /// </summary>
         [JsonProperty("shipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping")]
+#endif
         public ConfirmationTokenShipping Shipping { get; set; }
 
         /// <summary>
@@ -115,6 +159,9 @@ public class ConfirmationToken : StripeEntity<ConfirmationToken>, IHasId, IHasOb
         /// <c>true</c> on ConfirmationToken.
         /// </summary>
         [JsonProperty("use_stripe_sdk")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("use_stripe_sdk")]
+#endif
         public bool UseStripeSdk { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenMandateData.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenMandateData.cs
index 711b952aa4..31b6d898dc 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenMandateData.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenMandateData.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenMandateData : StripeEntity<ConfirmationTokenMandateData>
     {
@@ -9,6 +12,9 @@ public class ConfirmationTokenMandateData : StripeEntity<ConfirmationTokenMandat
         /// This hash contains details about the customer acceptance of the Mandate.
         /// </summary>
         [JsonProperty("customer_acceptance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_acceptance")]
+#endif
         public ConfirmationTokenMandateDataCustomerAcceptance CustomerAcceptance { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenMandateDataCustomerAcceptance.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenMandateDataCustomerAcceptance.cs
index 7b17f7e8b0..16b26548cd 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenMandateDataCustomerAcceptance.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenMandateDataCustomerAcceptance.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenMandateDataCustomerAcceptance : StripeEntity<ConfirmationTokenMandateDataCustomerAcceptance>
     {
@@ -10,12 +13,18 @@ public class ConfirmationTokenMandateDataCustomerAcceptance : StripeEntity<Confi
         /// acceptance.
         /// </summary>
         [JsonProperty("online")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("online")]
+#endif
         public ConfirmationTokenMandateDataCustomerAcceptanceOnline Online { get; set; }
 
         /// <summary>
         /// The type of customer acceptance information included with the Mandate.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenMandateDataCustomerAcceptanceOnline.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenMandateDataCustomerAcceptanceOnline.cs
index c477bfe39f..091d754cf4 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenMandateDataCustomerAcceptanceOnline.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenMandateDataCustomerAcceptanceOnline.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenMandateDataCustomerAcceptanceOnline : StripeEntity<ConfirmationTokenMandateDataCustomerAcceptanceOnline>
     {
@@ -9,12 +12,18 @@ public class ConfirmationTokenMandateDataCustomerAcceptanceOnline : StripeEntity
         /// The IP address from which the Mandate was accepted by the customer.
         /// </summary>
         [JsonProperty("ip_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip_address")]
+#endif
         public string IpAddress { get; set; }
 
         /// <summary>
         /// The user agent of the browser from which the Mandate was accepted by the customer.
         /// </summary>
         [JsonProperty("user_agent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_agent")]
+#endif
         public string UserAgent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodOptions.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodOptions.cs
index 1c0dd1cfc3..428473fc1b 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodOptions.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodOptions : StripeEntity<ConfirmationTokenPaymentMethodOptions>
     {
@@ -9,6 +12,9 @@ public class ConfirmationTokenPaymentMethodOptions : StripeEntity<ConfirmationTo
         /// This hash contains the card payment method options.
         /// </summary>
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public ConfirmationTokenPaymentMethodOptionsCard Card { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodOptionsCard.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodOptionsCard.cs
index 9430c861de..b87f8ea371 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodOptionsCard.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodOptionsCard.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodOptionsCard : StripeEntity<ConfirmationTokenPaymentMethodOptionsCard>
     {
@@ -9,6 +12,9 @@ public class ConfirmationTokenPaymentMethodOptionsCard : StripeEntity<Confirmati
         /// The <c>cvc_update</c> Token collected from the Payment Element.
         /// </summary>
         [JsonProperty("cvc_token")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cvc_token")]
+#endif
         public string CvcToken { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreview.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreview.cs
index 4718693a72..bbb8eeba68 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreview.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreview.cs
@@ -3,19 +3,37 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class ConfirmationTokenPaymentMethodPreview : StripeEntity<ConfirmationTokenPaymentMethodPreview>
     {
         [JsonProperty("acss_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acss_debit")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewAcssDebit AcssDebit { get; set; }
 
         [JsonProperty("affirm")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("affirm")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewAffirm Affirm { get; set; }
 
         [JsonProperty("afterpay_clearpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("afterpay_clearpay")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewAfterpayClearpay AfterpayClearpay { get; set; }
 
         [JsonProperty("alipay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alipay")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewAlipay Alipay { get; set; }
 
         /// <summary>
@@ -26,39 +44,75 @@ public class ConfirmationTokenPaymentMethodPreview : StripeEntity<ConfirmationTo
         /// One of: <c>always</c>, <c>limited</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("allow_redisplay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allow_redisplay")]
+#endif
         public string AllowRedisplay { get; set; }
 
         [JsonProperty("alma")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alma")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewAlma Alma { get; set; }
 
         [JsonProperty("amazon_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amazon_pay")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewAmazonPay AmazonPay { get; set; }
 
         [JsonProperty("au_becs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("au_becs_debit")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewAuBecsDebit AuBecsDebit { get; set; }
 
         [JsonProperty("bacs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bacs_debit")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewBacsDebit BacsDebit { get; set; }
 
         [JsonProperty("bancontact")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bancontact")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewBancontact Bancontact { get; set; }
 
         [JsonProperty("billing_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_details")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewBillingDetails BillingDetails { get; set; }
 
         [JsonProperty("blik")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("blik")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewBlik Blik { get; set; }
 
         [JsonProperty("boleto")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("boleto")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewBoleto Boleto { get; set; }
 
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewCard Card { get; set; }
 
         [JsonProperty("card_present")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_present")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewCardPresent CardPresent { get; set; }
 
         [JsonProperty("cashapp")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cashapp")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewCashapp Cashapp { get; set; }
 
         #region Expandable Customer
@@ -69,6 +123,9 @@ public class ConfirmationTokenPaymentMethodPreview : StripeEntity<ConfirmationTo
         /// the PaymentMethod has not been saved to a Customer.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerId
         {
             get => this.InternalCustomer?.Id;
@@ -83,6 +140,9 @@ public string CustomerId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Customer Customer
         {
             get => this.InternalCustomer?.ExpandedObject;
@@ -91,94 +151,185 @@ public Customer Customer
 
         [JsonProperty("customer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Customer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Customer>))]
+#endif
         internal ExpandableField<Customer> InternalCustomer { get; set; }
         #endregion
 
         [JsonProperty("customer_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_balance")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewCustomerBalance CustomerBalance { get; set; }
 
         [JsonProperty("eps")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eps")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewEps Eps { get; set; }
 
         [JsonProperty("fpx")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fpx")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewFpx Fpx { get; set; }
 
         [JsonProperty("giropay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("giropay")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewGiropay Giropay { get; set; }
 
         [JsonProperty("grabpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("grabpay")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewGrabpay Grabpay { get; set; }
 
         [JsonProperty("ideal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ideal")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewIdeal Ideal { get; set; }
 
         [JsonProperty("interac_present")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interac_present")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewInteracPresent InteracPresent { get; set; }
 
         [JsonProperty("kakao_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kakao_pay")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewKakaoPay KakaoPay { get; set; }
 
         [JsonProperty("klarna")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("klarna")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewKlarna Klarna { get; set; }
 
         [JsonProperty("konbini")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("konbini")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewKonbini Konbini { get; set; }
 
         [JsonProperty("kr_card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kr_card")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewKrCard KrCard { get; set; }
 
         [JsonProperty("link")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("link")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewLink Link { get; set; }
 
         [JsonProperty("mobilepay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mobilepay")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewMobilepay Mobilepay { get; set; }
 
         [JsonProperty("multibanco")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("multibanco")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewMultibanco Multibanco { get; set; }
 
         [JsonProperty("naver_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("naver_pay")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewNaverPay NaverPay { get; set; }
 
         [JsonProperty("oxxo")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("oxxo")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewOxxo Oxxo { get; set; }
 
         [JsonProperty("p24")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("p24")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewP24 P24 { get; set; }
 
         [JsonProperty("pay_by_bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_by_bank")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewPayByBank PayByBank { get; set; }
 
         [JsonProperty("payco")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payco")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewPayco Payco { get; set; }
 
         [JsonProperty("paynow")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paynow")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewPaynow Paynow { get; set; }
 
         [JsonProperty("paypal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paypal")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewPaypal Paypal { get; set; }
 
         [JsonProperty("pix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pix")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewPix Pix { get; set; }
 
         [JsonProperty("promptpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promptpay")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewPromptpay Promptpay { get; set; }
 
         [JsonProperty("revolut_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("revolut_pay")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewRevolutPay RevolutPay { get; set; }
 
         [JsonProperty("samsung_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("samsung_pay")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewSamsungPay SamsungPay { get; set; }
 
         [JsonProperty("sepa_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_debit")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewSepaDebit SepaDebit { get; set; }
 
         [JsonProperty("sofort")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sofort")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewSofort Sofort { get; set; }
 
         [JsonProperty("swish")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("swish")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewSwish Swish { get; set; }
 
         [JsonProperty("twint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("twint")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewTwint Twint { get; set; }
 
         /// <summary>
@@ -197,15 +348,27 @@ public Customer Customer
         /// <c>us_bank_account</c>, <c>wechat_pay</c>, or <c>zip</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewUsBankAccount UsBankAccount { get; set; }
 
         [JsonProperty("wechat_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wechat_pay")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewWechatPay WechatPay { get; set; }
 
         [JsonProperty("zip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("zip")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewZip Zip { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewAcssDebit.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewAcssDebit.cs
index a57067c6a1..a8eed08147 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewAcssDebit.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewAcssDebit.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewAcssDebit : StripeEntity<ConfirmationTokenPaymentMethodPreviewAcssDebit>
     {
@@ -9,6 +12,9 @@ public class ConfirmationTokenPaymentMethodPreviewAcssDebit : StripeEntity<Confi
         /// Name of the bank associated with the bank account.
         /// </summary>
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         /// <summary>
@@ -16,24 +22,36 @@ public class ConfirmationTokenPaymentMethodPreviewAcssDebit : StripeEntity<Confi
         /// whether two bank accounts are the same.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
         /// Institution number of the bank account.
         /// </summary>
         [JsonProperty("institution_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("institution_number")]
+#endif
         public string InstitutionNumber { get; set; }
 
         /// <summary>
         /// Last four digits of the bank account number.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
         /// Transit number of the bank account.
         /// </summary>
         [JsonProperty("transit_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transit_number")]
+#endif
         public string TransitNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewAuBecsDebit.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewAuBecsDebit.cs
index 6030cf3ba2..15446c20da 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewAuBecsDebit.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewAuBecsDebit.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewAuBecsDebit : StripeEntity<ConfirmationTokenPaymentMethodPreviewAuBecsDebit>
     {
@@ -9,6 +12,9 @@ public class ConfirmationTokenPaymentMethodPreviewAuBecsDebit : StripeEntity<Con
         /// Six-digit number identifying bank and branch associated with this bank account.
         /// </summary>
         [JsonProperty("bsb_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bsb_number")]
+#endif
         public string BsbNumber { get; set; }
 
         /// <summary>
@@ -16,12 +22,18 @@ public class ConfirmationTokenPaymentMethodPreviewAuBecsDebit : StripeEntity<Con
         /// whether two bank accounts are the same.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
         /// Last four digits of the bank account number.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewBacsDebit.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewBacsDebit.cs
index 3da704f0e0..5dafe13349 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewBacsDebit.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewBacsDebit.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewBacsDebit : StripeEntity<ConfirmationTokenPaymentMethodPreviewBacsDebit>
     {
@@ -10,18 +13,27 @@ public class ConfirmationTokenPaymentMethodPreviewBacsDebit : StripeEntity<Confi
         /// whether two bank accounts are the same.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
         /// Last four digits of the bank account number.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
         /// Sort code of the bank account. (e.g., <c>10-20-30</c>).
         /// </summary>
         [JsonProperty("sort_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sort_code")]
+#endif
         public string SortCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewBillingDetails.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewBillingDetails.cs
index 87bffd0879..3e3120c920 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewBillingDetails.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewBillingDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewBillingDetails : StripeEntity<ConfirmationTokenPaymentMethodPreviewBillingDetails>
     {
@@ -9,24 +12,36 @@ public class ConfirmationTokenPaymentMethodPreviewBillingDetails : StripeEntity<
         /// Billing address.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public Address Address { get; set; }
 
         /// <summary>
         /// Email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// Full name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// Billing phone number (including extension).
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewBoleto.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewBoleto.cs
index 8945dd0ff0..55007e6b49 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewBoleto.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewBoleto.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewBoleto : StripeEntity<ConfirmationTokenPaymentMethodPreviewBoleto>
     {
@@ -9,6 +12,9 @@ public class ConfirmationTokenPaymentMethodPreviewBoleto : StripeEntity<Confirma
         /// Uniquely identifies the customer tax id (CNPJ or CPF).
         /// </summary>
         [JsonProperty("tax_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_id")]
+#endif
         public string TaxId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCard.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCard.cs
index 66de0dbc47..237e9232e2 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCard.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCard.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewCard : StripeEntity<ConfirmationTokenPaymentMethodPreviewCard>
     {
@@ -11,12 +14,18 @@ public class ConfirmationTokenPaymentMethodPreviewCard : StripeEntity<Confirmati
         /// <c>unknown</c>.
         /// </summary>
         [JsonProperty("brand")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brand")]
+#endif
         public string Brand { get; set; }
 
         /// <summary>
         /// Checks on Card address and CVC if provided.
         /// </summary>
         [JsonProperty("checks")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("checks")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewCardChecks Checks { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class ConfirmationTokenPaymentMethodPreviewCard : StripeEntity<Confirmati
         /// to get a sense of the international breakdown of cards you've collected.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -31,6 +43,9 @@ public class ConfirmationTokenPaymentMethodPreviewCard : StripeEntity<Confirmati
         /// only and not typically available in standard API requests.).
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -41,18 +56,27 @@ public class ConfirmationTokenPaymentMethodPreviewCard : StripeEntity<Confirmati
         /// contain more values in the future.
         /// </summary>
         [JsonProperty("display_brand")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_brand")]
+#endif
         public string DisplayBrand { get; set; }
 
         /// <summary>
         /// Two-digit number representing the card's expiration month.
         /// </summary>
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public long ExpMonth { get; set; }
 
         /// <summary>
         /// Four-digit number representing the card's expiration year.
         /// </summary>
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public long ExpYear { get; set; }
 
         /// <summary>
@@ -65,6 +89,9 @@ public class ConfirmationTokenPaymentMethodPreviewCard : StripeEntity<Confirmati
         /// fingerprints for the same card---one for India and one for the rest of the world.</em>.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
@@ -72,12 +99,18 @@ public class ConfirmationTokenPaymentMethodPreviewCard : StripeEntity<Confirmati
         /// <c>unknown</c>.
         /// </summary>
         [JsonProperty("funding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding")]
+#endif
         public string Funding { get; set; }
 
         /// <summary>
         /// Details of the original PaymentMethod that created this object.
         /// </summary>
         [JsonProperty("generated_from")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("generated_from")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewCardGeneratedFrom GeneratedFrom { get; set; }
 
         /// <summary>
@@ -85,6 +118,9 @@ public class ConfirmationTokenPaymentMethodPreviewCard : StripeEntity<Confirmati
         /// available in standard API requests.).
         /// </summary>
         [JsonProperty("iin")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iin")]
+#endif
         public string Iin { get; set; }
 
         /// <summary>
@@ -92,18 +128,27 @@ public class ConfirmationTokenPaymentMethodPreviewCard : StripeEntity<Confirmati
         /// in standard API requests.).
         /// </summary>
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public string Issuer { get; set; }
 
         /// <summary>
         /// The last four digits of the card.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
         /// Contains information about card networks that can be used to process the payment.
         /// </summary>
         [JsonProperty("networks")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("networks")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewCardNetworks Networks { get; set; }
 
         /// <summary>
@@ -111,18 +156,27 @@ public class ConfirmationTokenPaymentMethodPreviewCard : StripeEntity<Confirmati
         /// One of: <c>regulated</c>, or <c>unregulated</c>.
         /// </summary>
         [JsonProperty("regulated_status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("regulated_status")]
+#endif
         public string RegulatedStatus { get; set; }
 
         /// <summary>
         /// Contains details on how this Card may be used for 3D Secure authentication.
         /// </summary>
         [JsonProperty("three_d_secure_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("three_d_secure_usage")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewCardThreeDSecureUsage ThreeDSecureUsage { get; set; }
 
         /// <summary>
         /// If this Card is part of a card wallet, this contains the details of the card wallet.
         /// </summary>
         [JsonProperty("wallet")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wallet")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewCardWallet Wallet { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardChecks.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardChecks.cs
index 37265edffa..1da1e57a16 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardChecks.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardChecks.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewCardChecks : StripeEntity<ConfirmationTokenPaymentMethodPreviewCardChecks>
     {
@@ -10,6 +13,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardChecks : StripeEntity<Conf
         /// <c>unavailable</c>, or <c>unchecked</c>.
         /// </summary>
         [JsonProperty("address_line1_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_line1_check")]
+#endif
         public string AddressLine1Check { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardChecks : StripeEntity<Conf
         /// <c>fail</c>, <c>unavailable</c>, or <c>unchecked</c>.
         /// </summary>
         [JsonProperty("address_postal_code_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_postal_code_check")]
+#endif
         public string AddressPostalCodeCheck { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardChecks : StripeEntity<Conf
         /// <c>unavailable</c>, or <c>unchecked</c>.
         /// </summary>
         [JsonProperty("cvc_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cvc_check")]
+#endif
         public string CvcCheck { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardGeneratedFrom.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardGeneratedFrom.cs
index ec5b08e51a..cc8de432b6 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardGeneratedFrom.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardGeneratedFrom.cs
@@ -3,19 +3,31 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class ConfirmationTokenPaymentMethodPreviewCardGeneratedFrom : StripeEntity<ConfirmationTokenPaymentMethodPreviewCardGeneratedFrom>
     {
         /// <summary>
         /// The charge that created this object.
         /// </summary>
         [JsonProperty("charge")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("charge")]
+#endif
         public string Charge { get; set; }
 
         /// <summary>
         /// Transaction-specific details of the payment method used in the payment.
         /// </summary>
         [JsonProperty("payment_method_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_details")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetails PaymentMethodDetails { get; set; }
 
         #region Expandable SetupAttempt
@@ -25,6 +37,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardGeneratedFrom : StripeEnti
         /// The ID of the SetupAttempt that generated this PaymentMethod, if any.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string SetupAttemptId
         {
             get => this.InternalSetupAttempt?.Id;
@@ -38,6 +53,9 @@ public string SetupAttemptId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public SetupAttempt SetupAttempt
         {
             get => this.InternalSetupAttempt?.ExpandedObject;
@@ -46,6 +64,10 @@ public SetupAttempt SetupAttempt
 
         [JsonProperty("setup_attempt")]
         [JsonConverter(typeof(ExpandableFieldConverter<SetupAttempt>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_attempt")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<SetupAttempt>))]
+#endif
         internal ExpandableField<SetupAttempt> InternalSetupAttempt { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetails.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetails.cs
index 14c5581ded..97e76cecd0 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetails.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetails.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetails : StripeEntity<ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetails>
     {
         [JsonProperty("card_present")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_present")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetailsCardPresent CardPresent { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethod
         /// generated this <c>card</c> payment method. Always <c>card_present</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetailsCardPresent.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetailsCardPresent.cs
index 14505dfa74..d56c5af90d 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetailsCardPresent.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetailsCardPresent.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetailsCardPresent : StripeEntity<ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetailsCardPresent>
     {
@@ -12,6 +15,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethod
         /// The authorized amount.
         /// </summary>
         [JsonProperty("amount_authorized")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_authorized")]
+#endif
         public long? AmountAuthorized { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethod
         /// <c>unknown</c>.
         /// </summary>
         [JsonProperty("brand")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brand")]
+#endif
         public string Brand { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethod
         /// identifies the specific program or product associated with a card.
         /// </summary>
         [JsonProperty("brand_product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brand_product")]
+#endif
         public string BrandProduct { get; set; }
 
         /// <summary>
@@ -35,6 +47,10 @@ public class ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethod
         /// </summary>
         [JsonProperty("capture_before")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_before")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime CaptureBefore { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -46,6 +62,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethod
         /// payments, such as those made with Apple Pay and Google Pay.
         /// </summary>
         [JsonProperty("cardholder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder_name")]
+#endif
         public string CardholderName { get; set; }
 
         /// <summary>
@@ -53,6 +72,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethod
         /// to get a sense of the international breakdown of cards you've collected.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -60,24 +82,36 @@ public class ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethod
         /// only and not typically available in standard API requests.).
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// Authorization response cryptogram.
         /// </summary>
         [JsonProperty("emv_auth_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("emv_auth_data")]
+#endif
         public string EmvAuthData { get; set; }
 
         /// <summary>
         /// Two-digit number representing the card's expiration month.
         /// </summary>
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public long ExpMonth { get; set; }
 
         /// <summary>
         /// Four-digit number representing the card's expiration year.
         /// </summary>
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public long ExpYear { get; set; }
 
         /// <summary>
@@ -90,6 +124,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethod
         /// fingerprints for the same card---one for India and one for the rest of the world.</em>.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
@@ -97,6 +134,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethod
         /// <c>unknown</c>.
         /// </summary>
         [JsonProperty("funding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding")]
+#endif
         public string Funding { get; set; }
 
         /// <summary>
@@ -105,6 +145,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethod
         /// generate a card PaymentMethod.
         /// </summary>
         [JsonProperty("generated_card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("generated_card")]
+#endif
         public string GeneratedCard { get; set; }
 
         /// <summary>
@@ -112,6 +155,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethod
         /// available in standard API requests.).
         /// </summary>
         [JsonProperty("iin")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iin")]
+#endif
         public string Iin { get; set; }
 
         /// <summary>
@@ -120,6 +166,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethod
         /// href="https://stripe.com/docs/api/payment_intents/create#create_payment_intent-payment_method_options-card_present-request_incremental_authorization_support">request_incremental_authorization_support</a>.
         /// </summary>
         [JsonProperty("incremental_authorization_supported")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("incremental_authorization_supported")]
+#endif
         public bool IncrementalAuthorizationSupported { get; set; }
 
         /// <summary>
@@ -127,12 +176,18 @@ public class ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethod
         /// in standard API requests.).
         /// </summary>
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public string Issuer { get; set; }
 
         /// <summary>
         /// The last four digits of the card.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
@@ -142,6 +197,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethod
         /// <c>visa</c>, or <c>unknown</c>.
         /// </summary>
         [JsonProperty("network")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network")]
+#endif
         public string Network { get; set; }
 
         /// <summary>
@@ -151,24 +209,36 @@ public class ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethod
         /// network in the authorization response, and null otherwise.
         /// </summary>
         [JsonProperty("network_transaction_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network_transaction_id")]
+#endif
         public string NetworkTransactionId { get; set; }
 
         /// <summary>
         /// Details about payments collected offline.
         /// </summary>
         [JsonProperty("offline")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("offline")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetailsCardPresentOffline Offline { get; set; }
 
         /// <summary>
         /// Defines whether the authorized amount can be over-captured or not.
         /// </summary>
         [JsonProperty("overcapture_supported")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overcapture_supported")]
+#endif
         public bool OvercaptureSupported { get; set; }
 
         /// <summary>
         /// EMV tag 5F2D. Preferred languages specified by the integrated circuit chip.
         /// </summary>
         [JsonProperty("preferred_locales")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_locales")]
+#endif
         public List<string> PreferredLocales { get; set; }
 
         /// <summary>
@@ -177,6 +247,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethod
         /// <c>magnetic_stripe_fallback</c>, or <c>magnetic_stripe_track2</c>.
         /// </summary>
         [JsonProperty("read_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("read_method")]
+#endif
         public string ReadMethod { get; set; }
 
         /// <summary>
@@ -184,9 +257,15 @@ public class ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethod
         /// transactions.
         /// </summary>
         [JsonProperty("receipt")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("receipt")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetailsCardPresentReceipt Receipt { get; set; }
 
         [JsonProperty("wallet")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wallet")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetailsCardPresentWallet Wallet { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetailsCardPresentOffline.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetailsCardPresentOffline.cs
index 1e2be67194..baf7455f78 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetailsCardPresentOffline.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetailsCardPresentOffline.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetailsCardPresentOffline : StripeEntity<ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetailsCardPresentOffline>
     {
@@ -12,12 +15,19 @@ public class ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethod
         /// </summary>
         [JsonProperty("stored_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("stored_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? StoredAt { get; set; }
 
         /// <summary>
         /// The method used to process this payment method offline. Only deferred is allowed.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetailsCardPresentReceipt.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetailsCardPresentReceipt.cs
index 13d5a8be43..e74c5c7118 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetailsCardPresentReceipt.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetailsCardPresentReceipt.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetailsCardPresentReceipt : StripeEntity<ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetailsCardPresentReceipt>
     {
@@ -10,30 +13,45 @@ public class ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethod
         /// One of: <c>checking</c>, <c>credit</c>, <c>prepaid</c>, or <c>unknown</c>.
         /// </summary>
         [JsonProperty("account_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_type")]
+#endif
         public string AccountType { get; set; }
 
         /// <summary>
         /// EMV tag 9F26, cryptogram generated by the integrated circuit chip.
         /// </summary>
         [JsonProperty("application_cryptogram")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_cryptogram")]
+#endif
         public string ApplicationCryptogram { get; set; }
 
         /// <summary>
         /// Mnenomic of the Application Identifier.
         /// </summary>
         [JsonProperty("application_preferred_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_preferred_name")]
+#endif
         public string ApplicationPreferredName { get; set; }
 
         /// <summary>
         /// Identifier for this transaction.
         /// </summary>
         [JsonProperty("authorization_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("authorization_code")]
+#endif
         public string AuthorizationCode { get; set; }
 
         /// <summary>
         /// EMV tag 8A. A code returned by the card issuer.
         /// </summary>
         [JsonProperty("authorization_response_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("authorization_response_code")]
+#endif
         public string AuthorizationResponseCode { get; set; }
 
         /// <summary>
@@ -42,24 +60,36 @@ public class ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethod
         /// <c>offline_pin_and_signature</c>, <c>online_pin</c>, or <c>signature</c>.
         /// </summary>
         [JsonProperty("cardholder_verification_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder_verification_method")]
+#endif
         public string CardholderVerificationMethod { get; set; }
 
         /// <summary>
         /// EMV tag 84. Similar to the application identifier stored on the integrated circuit chip.
         /// </summary>
         [JsonProperty("dedicated_file_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dedicated_file_name")]
+#endif
         public string DedicatedFileName { get; set; }
 
         /// <summary>
         /// The outcome of a series of EMV functions performed by the card reader.
         /// </summary>
         [JsonProperty("terminal_verification_results")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("terminal_verification_results")]
+#endif
         public string TerminalVerificationResults { get; set; }
 
         /// <summary>
         /// An indication of various EMV functions performed during the transaction.
         /// </summary>
         [JsonProperty("transaction_status_information")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_status_information")]
+#endif
         public string TransactionStatusInformation { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetailsCardPresentWallet.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetailsCardPresentWallet.cs
index 5ac2c77595..57f8964be6 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetailsCardPresentWallet.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetailsCardPresentWallet.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetailsCardPresentWallet : StripeEntity<ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethodDetailsCardPresentWallet>
     {
@@ -11,6 +14,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardGeneratedFromPaymentMethod
         /// One of: <c>apple_pay</c>, <c>google_pay</c>, <c>samsung_pay</c>, or <c>unknown</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardNetworks.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardNetworks.cs
index 1db1b74427..42318d5898 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardNetworks.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardNetworks.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewCardNetworks : StripeEntity<ConfirmationTokenPaymentMethodPreviewCardNetworks>
     {
@@ -11,6 +14,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardNetworks : StripeEntity<Co
         /// href="https://stripe.com/api/payment_intents/confirm#confirm_payment_intent-payment_method_options-card-network">payment_method_options.card.network</a>.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public List<string> Available { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardNetworks : StripeEntity<Co
         /// valid for the card.
         /// </summary>
         [JsonProperty("preferred")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred")]
+#endif
         public string Preferred { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardPresent.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardPresent.cs
index 764bb9f049..158665d3e6 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardPresent.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardPresent.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewCardPresent : StripeEntity<ConfirmationTokenPaymentMethodPreviewCardPresent>
     {
@@ -12,6 +15,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardPresent : StripeEntity<Con
         /// <c>unknown</c>.
         /// </summary>
         [JsonProperty("brand")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brand")]
+#endif
         public string Brand { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardPresent : StripeEntity<Con
         /// identifies the specific program or product associated with a card.
         /// </summary>
         [JsonProperty("brand_product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brand_product")]
+#endif
         public string BrandProduct { get; set; }
 
         /// <summary>
@@ -30,6 +39,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardPresent : StripeEntity<Con
         /// payments, such as those made with Apple Pay and Google Pay.
         /// </summary>
         [JsonProperty("cardholder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder_name")]
+#endif
         public string CardholderName { get; set; }
 
         /// <summary>
@@ -37,6 +49,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardPresent : StripeEntity<Con
         /// to get a sense of the international breakdown of cards you've collected.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -44,18 +59,27 @@ public class ConfirmationTokenPaymentMethodPreviewCardPresent : StripeEntity<Con
         /// only and not typically available in standard API requests.).
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// Two-digit number representing the card's expiration month.
         /// </summary>
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public long ExpMonth { get; set; }
 
         /// <summary>
         /// Four-digit number representing the card's expiration year.
         /// </summary>
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public long ExpYear { get; set; }
 
         /// <summary>
@@ -68,6 +92,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardPresent : StripeEntity<Con
         /// fingerprints for the same card---one for India and one for the rest of the world.</em>.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
@@ -75,6 +102,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardPresent : StripeEntity<Con
         /// <c>unknown</c>.
         /// </summary>
         [JsonProperty("funding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding")]
+#endif
         public string Funding { get; set; }
 
         /// <summary>
@@ -82,6 +112,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardPresent : StripeEntity<Con
         /// available in standard API requests.).
         /// </summary>
         [JsonProperty("iin")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iin")]
+#endif
         public string Iin { get; set; }
 
         /// <summary>
@@ -89,30 +122,45 @@ public class ConfirmationTokenPaymentMethodPreviewCardPresent : StripeEntity<Con
         /// in standard API requests.).
         /// </summary>
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public string Issuer { get; set; }
 
         /// <summary>
         /// The last four digits of the card.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
         /// Contains information about card networks that can be used to process the payment.
         /// </summary>
         [JsonProperty("networks")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("networks")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewCardPresentNetworks Networks { get; set; }
 
         /// <summary>
         /// Details about payment methods collected offline.
         /// </summary>
         [JsonProperty("offline")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("offline")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewCardPresentOffline Offline { get; set; }
 
         /// <summary>
         /// EMV tag 5F2D. Preferred languages specified by the integrated circuit chip.
         /// </summary>
         [JsonProperty("preferred_locales")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_locales")]
+#endif
         public List<string> PreferredLocales { get; set; }
 
         /// <summary>
@@ -121,9 +169,15 @@ public class ConfirmationTokenPaymentMethodPreviewCardPresent : StripeEntity<Con
         /// <c>magnetic_stripe_fallback</c>, or <c>magnetic_stripe_track2</c>.
         /// </summary>
         [JsonProperty("read_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("read_method")]
+#endif
         public string ReadMethod { get; set; }
 
         [JsonProperty("wallet")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wallet")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewCardPresentWallet Wallet { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardPresentNetworks.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardPresentNetworks.cs
index 2b88223456..87a6a9d7a1 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardPresentNetworks.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardPresentNetworks.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewCardPresentNetworks : StripeEntity<ConfirmationTokenPaymentMethodPreviewCardPresentNetworks>
     {
@@ -11,12 +14,18 @@ public class ConfirmationTokenPaymentMethodPreviewCardPresentNetworks : StripeEn
         /// href="https://stripe.com/api/payment_intents/confirm#confirm_payment_intent-payment_method_options-card-network">payment_method_options.card.network</a>.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public List<string> Available { get; set; }
 
         /// <summary>
         /// The preferred network for the card.
         /// </summary>
         [JsonProperty("preferred")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred")]
+#endif
         public string Preferred { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardPresentOffline.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardPresentOffline.cs
index 564841897d..06944d9937 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardPresentOffline.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardPresentOffline.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewCardPresentOffline : StripeEntity<ConfirmationTokenPaymentMethodPreviewCardPresentOffline>
     {
@@ -12,12 +15,19 @@ public class ConfirmationTokenPaymentMethodPreviewCardPresentOffline : StripeEnt
         /// </summary>
         [JsonProperty("stored_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("stored_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? StoredAt { get; set; }
 
         /// <summary>
         /// The method used to process this payment method offline. Only deferred is allowed.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardPresentWallet.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardPresentWallet.cs
index b791697246..b2f74e7cd0 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardPresentWallet.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardPresentWallet.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewCardPresentWallet : StripeEntity<ConfirmationTokenPaymentMethodPreviewCardPresentWallet>
     {
@@ -11,6 +14,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardPresentWallet : StripeEnti
         /// One of: <c>apple_pay</c>, <c>google_pay</c>, <c>samsung_pay</c>, or <c>unknown</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardThreeDSecureUsage.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardThreeDSecureUsage.cs
index 54155842ef..02481c5bf0 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardThreeDSecureUsage.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardThreeDSecureUsage.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewCardThreeDSecureUsage : StripeEntity<ConfirmationTokenPaymentMethodPreviewCardThreeDSecureUsage>
     {
@@ -9,6 +12,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardThreeDSecureUsage : Stripe
         /// Whether 3D Secure is supported on this card.
         /// </summary>
         [JsonProperty("supported")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("supported")]
+#endif
         public bool Supported { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardWallet.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardWallet.cs
index 5f71664801..c6356587b2 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardWallet.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardWallet.cs
@@ -2,31 +2,55 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewCardWallet : StripeEntity<ConfirmationTokenPaymentMethodPreviewCardWallet>
     {
         [JsonProperty("amex_express_checkout")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amex_express_checkout")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewCardWalletAmexExpressCheckout AmexExpressCheckout { get; set; }
 
         [JsonProperty("apple_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("apple_pay")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewCardWalletApplePay ApplePay { get; set; }
 
         /// <summary>
         /// (For tokenized numbers only.) The last four digits of the device account number.
         /// </summary>
         [JsonProperty("dynamic_last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dynamic_last4")]
+#endif
         public string DynamicLast4 { get; set; }
 
         [JsonProperty("google_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("google_pay")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewCardWalletGooglePay GooglePay { get; set; }
 
         [JsonProperty("link")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("link")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewCardWalletLink Link { get; set; }
 
         [JsonProperty("masterpass")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("masterpass")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewCardWalletMasterpass Masterpass { get; set; }
 
         [JsonProperty("samsung_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("samsung_pay")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewCardWalletSamsungPay SamsungPay { get; set; }
 
         /// <summary>
@@ -38,9 +62,15 @@ public class ConfirmationTokenPaymentMethodPreviewCardWallet : StripeEntity<Conf
         /// <c>masterpass</c>, <c>samsung_pay</c>, or <c>visa_checkout</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         [JsonProperty("visa_checkout")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("visa_checkout")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewCardWalletVisaCheckout VisaCheckout { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardWalletMasterpass.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardWalletMasterpass.cs
index bb69049ebe..f88cd50a16 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardWalletMasterpass.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardWalletMasterpass.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewCardWalletMasterpass : StripeEntity<ConfirmationTokenPaymentMethodPreviewCardWalletMasterpass>
     {
@@ -11,6 +14,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardWalletMasterpass : StripeE
         /// mutated.
         /// </summary>
         [JsonProperty("billing_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_address")]
+#endif
         public Address BillingAddress { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardWalletMasterpass : StripeE
         /// supported) at the time of authorization or settlement. They cannot be set or mutated.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardWalletMasterpass : StripeE
         /// supported) at the time of authorization or settlement. They cannot be set or mutated.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -33,6 +45,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardWalletMasterpass : StripeE
         /// or mutated.
         /// </summary>
         [JsonProperty("shipping_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_address")]
+#endif
         public Address ShippingAddress { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardWalletVisaCheckout.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardWalletVisaCheckout.cs
index be06248ac6..8d981df5b4 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardWalletVisaCheckout.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCardWalletVisaCheckout.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewCardWalletVisaCheckout : StripeEntity<ConfirmationTokenPaymentMethodPreviewCardWalletVisaCheckout>
     {
@@ -11,6 +14,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardWalletVisaCheckout : Strip
         /// mutated.
         /// </summary>
         [JsonProperty("billing_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_address")]
+#endif
         public Address BillingAddress { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardWalletVisaCheckout : Strip
         /// supported) at the time of authorization or settlement. They cannot be set or mutated.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardWalletVisaCheckout : Strip
         /// supported) at the time of authorization or settlement. They cannot be set or mutated.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -33,6 +45,9 @@ public class ConfirmationTokenPaymentMethodPreviewCardWalletVisaCheckout : Strip
         /// or mutated.
         /// </summary>
         [JsonProperty("shipping_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_address")]
+#endif
         public Address ShippingAddress { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCashapp.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCashapp.cs
index 356062573f..c46ed8b87b 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCashapp.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewCashapp.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewCashapp : StripeEntity<ConfirmationTokenPaymentMethodPreviewCashapp>
     {
@@ -9,12 +12,18 @@ public class ConfirmationTokenPaymentMethodPreviewCashapp : StripeEntity<Confirm
         /// A unique and immutable identifier assigned by Cash App to every buyer.
         /// </summary>
         [JsonProperty("buyer_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("buyer_id")]
+#endif
         public string BuyerId { get; set; }
 
         /// <summary>
         /// A public identifier for buyers using Cash App.
         /// </summary>
         [JsonProperty("cashtag")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cashtag")]
+#endif
         public string Cashtag { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewEps.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewEps.cs
index 0fa77fe93f..1835f971a3 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewEps.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewEps.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewEps : StripeEntity<ConfirmationTokenPaymentMethodPreviewEps>
     {
@@ -35,6 +38,9 @@ public class ConfirmationTokenPaymentMethodPreviewEps : StripeEntity<Confirmatio
         /// <c>vr_bank_braunau</c>.
         /// </summary>
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewFpx.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewFpx.cs
index 3975cb7436..dc4b547832 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewFpx.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewFpx.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewFpx : StripeEntity<ConfirmationTokenPaymentMethodPreviewFpx>
     {
@@ -10,6 +13,9 @@ public class ConfirmationTokenPaymentMethodPreviewFpx : StripeEntity<Confirmatio
         /// One of: <c>company</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("account_holder_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_type")]
+#endif
         public string AccountHolderType { get; set; }
 
         /// <summary>
@@ -26,6 +32,9 @@ public class ConfirmationTokenPaymentMethodPreviewFpx : StripeEntity<Confirmatio
         /// <c>public_bank</c>, <c>rhb</c>, <c>standard_chartered</c>, or <c>uob</c>.
         /// </summary>
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewIdeal.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewIdeal.cs
index f4094be4ef..127834fe58 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewIdeal.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewIdeal.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewIdeal : StripeEntity<ConfirmationTokenPaymentMethodPreviewIdeal>
     {
@@ -16,6 +19,9 @@ public class ConfirmationTokenPaymentMethodPreviewIdeal : StripeEntity<Confirmat
         /// <c>yoursafe</c>.
         /// </summary>
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
 
         /// <summary>
@@ -26,6 +32,9 @@ public class ConfirmationTokenPaymentMethodPreviewIdeal : StripeEntity<Confirmat
         /// <c>REVOLT21</c>, <c>SNSBNL2A</c>, or <c>TRIONL2U</c>.
         /// </summary>
         [JsonProperty("bic")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bic")]
+#endif
         public string Bic { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewInteracPresent.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewInteracPresent.cs
index 2adc1fba04..4e8ebb572b 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewInteracPresent.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewInteracPresent.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewInteracPresent : StripeEntity<ConfirmationTokenPaymentMethodPreviewInteracPresent>
     {
@@ -10,6 +13,9 @@ public class ConfirmationTokenPaymentMethodPreviewInteracPresent : StripeEntity<
         /// Card brand. Can be <c>interac</c>, <c>mastercard</c> or <c>visa</c>.
         /// </summary>
         [JsonProperty("brand")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brand")]
+#endif
         public string Brand { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class ConfirmationTokenPaymentMethodPreviewInteracPresent : StripeEntity<
         /// payments, such as those made with Apple Pay and Google Pay.
         /// </summary>
         [JsonProperty("cardholder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder_name")]
+#endif
         public string CardholderName { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class ConfirmationTokenPaymentMethodPreviewInteracPresent : StripeEntity<
         /// to get a sense of the international breakdown of cards you've collected.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -35,18 +47,27 @@ public class ConfirmationTokenPaymentMethodPreviewInteracPresent : StripeEntity<
         /// only and not typically available in standard API requests.).
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// Two-digit number representing the card's expiration month.
         /// </summary>
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public long ExpMonth { get; set; }
 
         /// <summary>
         /// Four-digit number representing the card's expiration year.
         /// </summary>
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public long ExpYear { get; set; }
 
         /// <summary>
@@ -59,6 +80,9 @@ public class ConfirmationTokenPaymentMethodPreviewInteracPresent : StripeEntity<
         /// fingerprints for the same card---one for India and one for the rest of the world.</em>.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
@@ -66,6 +90,9 @@ public class ConfirmationTokenPaymentMethodPreviewInteracPresent : StripeEntity<
         /// <c>unknown</c>.
         /// </summary>
         [JsonProperty("funding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding")]
+#endif
         public string Funding { get; set; }
 
         /// <summary>
@@ -73,6 +100,9 @@ public class ConfirmationTokenPaymentMethodPreviewInteracPresent : StripeEntity<
         /// available in standard API requests.).
         /// </summary>
         [JsonProperty("iin")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iin")]
+#endif
         public string Iin { get; set; }
 
         /// <summary>
@@ -80,24 +110,36 @@ public class ConfirmationTokenPaymentMethodPreviewInteracPresent : StripeEntity<
         /// in standard API requests.).
         /// </summary>
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public string Issuer { get; set; }
 
         /// <summary>
         /// The last four digits of the card.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
         /// Contains information about card networks that can be used to process the payment.
         /// </summary>
         [JsonProperty("networks")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("networks")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewInteracPresentNetworks Networks { get; set; }
 
         /// <summary>
         /// EMV tag 5F2D. Preferred languages specified by the integrated circuit chip.
         /// </summary>
         [JsonProperty("preferred_locales")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_locales")]
+#endif
         public List<string> PreferredLocales { get; set; }
 
         /// <summary>
@@ -106,6 +148,9 @@ public class ConfirmationTokenPaymentMethodPreviewInteracPresent : StripeEntity<
         /// <c>magnetic_stripe_fallback</c>, or <c>magnetic_stripe_track2</c>.
         /// </summary>
         [JsonProperty("read_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("read_method")]
+#endif
         public string ReadMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewInteracPresentNetworks.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewInteracPresentNetworks.cs
index 6996b2d493..73c89fcf9b 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewInteracPresentNetworks.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewInteracPresentNetworks.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewInteracPresentNetworks : StripeEntity<ConfirmationTokenPaymentMethodPreviewInteracPresentNetworks>
     {
@@ -11,12 +14,18 @@ public class ConfirmationTokenPaymentMethodPreviewInteracPresentNetworks : Strip
         /// href="https://stripe.com/api/payment_intents/confirm#confirm_payment_intent-payment_method_options-card-network">payment_method_options.card.network</a>.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public List<string> Available { get; set; }
 
         /// <summary>
         /// The preferred network for the card.
         /// </summary>
         [JsonProperty("preferred")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred")]
+#endif
         public string Preferred { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewKlarna.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewKlarna.cs
index 532708ed1a..e347e78fdc 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewKlarna.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewKlarna.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewKlarna : StripeEntity<ConfirmationTokenPaymentMethodPreviewKlarna>
     {
@@ -9,6 +12,9 @@ public class ConfirmationTokenPaymentMethodPreviewKlarna : StripeEntity<Confirma
         /// The customer's date of birth, if provided.
         /// </summary>
         [JsonProperty("dob")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dob")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewKlarnaDob Dob { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewKlarnaDob.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewKlarnaDob.cs
index fc9bd9d1e4..e720e78235 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewKlarnaDob.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewKlarnaDob.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewKlarnaDob : StripeEntity<ConfirmationTokenPaymentMethodPreviewKlarnaDob>
     {
@@ -9,18 +12,27 @@ public class ConfirmationTokenPaymentMethodPreviewKlarnaDob : StripeEntity<Confi
         /// The day of birth, between 1 and 31.
         /// </summary>
         [JsonProperty("day")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("day")]
+#endif
         public long? Day { get; set; }
 
         /// <summary>
         /// The month of birth, between 1 and 12.
         /// </summary>
         [JsonProperty("month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("month")]
+#endif
         public long? Month { get; set; }
 
         /// <summary>
         /// The four-digit year of birth.
         /// </summary>
         [JsonProperty("year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("year")]
+#endif
         public long? Year { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewKrCard.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewKrCard.cs
index bc365972b0..5957f4881f 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewKrCard.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewKrCard.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewKrCard : StripeEntity<ConfirmationTokenPaymentMethodPreviewKrCard>
     {
@@ -14,12 +17,18 @@ public class ConfirmationTokenPaymentMethodPreviewKrCard : StripeEntity<Confirma
         /// <c>woori</c>.
         /// </summary>
         [JsonProperty("brand")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brand")]
+#endif
         public string Brand { get; set; }
 
         /// <summary>
         /// The last four digits of the card. This may not be present for American Express cards.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewLink.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewLink.cs
index 0dd6a560b7..8ddd95bebe 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewLink.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewLink.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewLink : StripeEntity<ConfirmationTokenPaymentMethodPreviewLink>
     {
@@ -10,6 +13,9 @@ public class ConfirmationTokenPaymentMethodPreviewLink : StripeEntity<Confirmati
         /// Account owner's email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class ConfirmationTokenPaymentMethodPreviewLink : StripeEntity<Confirmati
         /// </summary>
         [Obsolete("This property is deprecated, please refer to the description for details.")]
         [JsonProperty("persistent_token")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("persistent_token")]
+#endif
         public string PersistentToken { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewNaverPay.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewNaverPay.cs
index 7472c06a85..646907b6fb 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewNaverPay.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewNaverPay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewNaverPay : StripeEntity<ConfirmationTokenPaymentMethodPreviewNaverPay>
     {
@@ -10,6 +13,9 @@ public class ConfirmationTokenPaymentMethodPreviewNaverPay : StripeEntity<Confir
         /// One of: <c>card</c>, or <c>points</c>.
         /// </summary>
         [JsonProperty("funding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding")]
+#endif
         public string Funding { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewP24.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewP24.cs
index 004605d9f8..c5cdf65eff 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewP24.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewP24.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewP24 : StripeEntity<ConfirmationTokenPaymentMethodPreviewP24>
     {
@@ -17,6 +20,9 @@ public class ConfirmationTokenPaymentMethodPreviewP24 : StripeEntity<Confirmatio
         /// <c>volkswagen_bank</c>.
         /// </summary>
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewPaypal.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewPaypal.cs
index e81b572b13..4e31068144 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewPaypal.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewPaypal.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewPaypal : StripeEntity<ConfirmationTokenPaymentMethodPreviewPaypal>
     {
@@ -11,6 +14,9 @@ public class ConfirmationTokenPaymentMethodPreviewPaypal : StripeEntity<Confirma
         /// or mutated.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -18,12 +24,18 @@ public class ConfirmationTokenPaymentMethodPreviewPaypal : StripeEntity<Confirma
         /// authorization or settlement. They cannot be set or mutated.
         /// </summary>
         [JsonProperty("payer_email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payer_email")]
+#endif
         public string PayerEmail { get; set; }
 
         /// <summary>
         /// PayPal account PayerID. This identifier uniquely identifies the PayPal customer.
         /// </summary>
         [JsonProperty("payer_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payer_id")]
+#endif
         public string PayerId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewSepaDebit.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewSepaDebit.cs
index 307fcce5d6..3027cdf247 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewSepaDebit.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewSepaDebit.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewSepaDebit : StripeEntity<ConfirmationTokenPaymentMethodPreviewSepaDebit>
     {
@@ -9,18 +12,27 @@ public class ConfirmationTokenPaymentMethodPreviewSepaDebit : StripeEntity<Confi
         /// Bank code of bank associated with the bank account.
         /// </summary>
         [JsonProperty("bank_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_code")]
+#endif
         public string BankCode { get; set; }
 
         /// <summary>
         /// Branch code of bank associated with the bank account.
         /// </summary>
         [JsonProperty("branch_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("branch_code")]
+#endif
         public string BranchCode { get; set; }
 
         /// <summary>
         /// Two-letter ISO code representing the country the bank account is located in.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -28,18 +40,27 @@ public class ConfirmationTokenPaymentMethodPreviewSepaDebit : StripeEntity<Confi
         /// whether two bank accounts are the same.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
         /// Information about the object that generated this PaymentMethod.
         /// </summary>
         [JsonProperty("generated_from")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("generated_from")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewSepaDebitGeneratedFrom GeneratedFrom { get; set; }
 
         /// <summary>
         /// Last four characters of the IBAN.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewSepaDebitGeneratedFrom.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewSepaDebitGeneratedFrom.cs
index 65d556a38d..df9c0d8acc 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewSepaDebitGeneratedFrom.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewSepaDebitGeneratedFrom.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class ConfirmationTokenPaymentMethodPreviewSepaDebitGeneratedFrom : StripeEntity<ConfirmationTokenPaymentMethodPreviewSepaDebitGeneratedFrom>
     {
         #region Expandable Charge
@@ -13,6 +19,9 @@ public class ConfirmationTokenPaymentMethodPreviewSepaDebitGeneratedFrom : Strip
         /// The ID of the Charge that generated this PaymentMethod, if any.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ChargeId
         {
             get => this.InternalCharge?.Id;
@@ -26,6 +35,9 @@ public string ChargeId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Charge Charge
         {
             get => this.InternalCharge?.ExpandedObject;
@@ -34,6 +46,10 @@ public Charge Charge
 
         [JsonProperty("charge")]
         [JsonConverter(typeof(ExpandableFieldConverter<Charge>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("charge")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Charge>))]
+#endif
         internal ExpandableField<Charge> InternalCharge { get; set; }
         #endregion
 
@@ -44,6 +60,9 @@ public Charge Charge
         /// The ID of the SetupAttempt that generated this PaymentMethod, if any.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string SetupAttemptId
         {
             get => this.InternalSetupAttempt?.Id;
@@ -57,6 +76,9 @@ public string SetupAttemptId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public SetupAttempt SetupAttempt
         {
             get => this.InternalSetupAttempt?.ExpandedObject;
@@ -65,6 +87,10 @@ public SetupAttempt SetupAttempt
 
         [JsonProperty("setup_attempt")]
         [JsonConverter(typeof(ExpandableFieldConverter<SetupAttempt>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_attempt")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<SetupAttempt>))]
+#endif
         internal ExpandableField<SetupAttempt> InternalSetupAttempt { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewSofort.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewSofort.cs
index 02a6375f27..e6584370b4 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewSofort.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewSofort.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewSofort : StripeEntity<ConfirmationTokenPaymentMethodPreviewSofort>
     {
@@ -9,6 +12,9 @@ public class ConfirmationTokenPaymentMethodPreviewSofort : StripeEntity<Confirma
         /// Two-letter ISO code representing the country the bank account is located in.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewUsBankAccount.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewUsBankAccount.cs
index 99ec848645..b7fe214a1d 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewUsBankAccount.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewUsBankAccount.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewUsBankAccount : StripeEntity<ConfirmationTokenPaymentMethodPreviewUsBankAccount>
     {
@@ -10,6 +13,9 @@ public class ConfirmationTokenPaymentMethodPreviewUsBankAccount : StripeEntity<C
         /// One of: <c>company</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("account_holder_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_type")]
+#endif
         public string AccountHolderType { get; set; }
 
         /// <summary>
@@ -17,18 +23,27 @@ public class ConfirmationTokenPaymentMethodPreviewUsBankAccount : StripeEntity<C
         /// One of: <c>checking</c>, or <c>savings</c>.
         /// </summary>
         [JsonProperty("account_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_type")]
+#endif
         public string AccountType { get; set; }
 
         /// <summary>
         /// The name of the bank.
         /// </summary>
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         /// <summary>
         /// The ID of the Financial Connections Account used to create the payment method.
         /// </summary>
         [JsonProperty("financial_connections_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_connections_account")]
+#endif
         public string FinancialConnectionsAccount { get; set; }
 
         /// <summary>
@@ -36,30 +51,45 @@ public class ConfirmationTokenPaymentMethodPreviewUsBankAccount : StripeEntity<C
         /// whether two bank accounts are the same.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
         /// Last four digits of the bank account number.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
         /// Contains information about US bank account networks that can be used.
         /// </summary>
         [JsonProperty("networks")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("networks")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewUsBankAccountNetworks Networks { get; set; }
 
         /// <summary>
         /// Routing number of the bank account.
         /// </summary>
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
 
         /// <summary>
         /// Contains information about the future reusability of this PaymentMethod.
         /// </summary>
         [JsonProperty("status_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_details")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewUsBankAccountStatusDetails StatusDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewUsBankAccountNetworks.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewUsBankAccountNetworks.cs
index 11925281d0..375c56cea2 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewUsBankAccountNetworks.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewUsBankAccountNetworks.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewUsBankAccountNetworks : StripeEntity<ConfirmationTokenPaymentMethodPreviewUsBankAccountNetworks>
     {
@@ -10,6 +13,9 @@ public class ConfirmationTokenPaymentMethodPreviewUsBankAccountNetworks : Stripe
         /// The preferred network.
         /// </summary>
         [JsonProperty("preferred")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred")]
+#endif
         public string Preferred { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class ConfirmationTokenPaymentMethodPreviewUsBankAccountNetworks : Stripe
         /// One of: <c>ach</c>, or <c>us_domestic_wire</c>.
         /// </summary>
         [JsonProperty("supported")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("supported")]
+#endif
         public List<string> Supported { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewUsBankAccountStatusDetails.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewUsBankAccountStatusDetails.cs
index c1162e1fbc..6ec5dd582b 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewUsBankAccountStatusDetails.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewUsBankAccountStatusDetails.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewUsBankAccountStatusDetails : StripeEntity<ConfirmationTokenPaymentMethodPreviewUsBankAccountStatusDetails>
     {
         [JsonProperty("blocked")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("blocked")]
+#endif
         public ConfirmationTokenPaymentMethodPreviewUsBankAccountStatusDetailsBlocked Blocked { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewUsBankAccountStatusDetailsBlocked.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewUsBankAccountStatusDetailsBlocked.cs
index 808b488fe0..59e33cfa27 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewUsBankAccountStatusDetailsBlocked.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenPaymentMethodPreviewUsBankAccountStatusDetailsBlocked.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodPreviewUsBankAccountStatusDetailsBlocked : StripeEntity<ConfirmationTokenPaymentMethodPreviewUsBankAccountStatusDetailsBlocked>
     {
@@ -11,6 +14,9 @@ public class ConfirmationTokenPaymentMethodPreviewUsBankAccountStatusDetailsBloc
         /// <c>R10</c>, <c>R11</c>, <c>R16</c>, <c>R20</c>, <c>R29</c>, or <c>R31</c>.
         /// </summary>
         [JsonProperty("network_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network_code")]
+#endif
         public string NetworkCode { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class ConfirmationTokenPaymentMethodPreviewUsBankAccountStatusDetailsBloc
         /// <c>bank_account_unusable</c>, or <c>debit_not_authorized</c>.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenShipping.cs b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenShipping.cs
index d113383b95..298eedb11f 100644
--- a/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenShipping.cs
+++ b/src/Stripe.net/Entities/ConfirmationTokens/ConfirmationTokenShipping.cs
@@ -2,22 +2,34 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenShipping : StripeEntity<ConfirmationTokenShipping>
     {
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public Address Address { get; set; }
 
         /// <summary>
         /// Recipient name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// Recipient phone (including extension).
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ConnectCollectionTransfers/ConnectCollectionTransfer.cs b/src/Stripe.net/Entities/ConnectCollectionTransfers/ConnectCollectionTransfer.cs
index 07d6e0e820..ecfe8d2b9d 100644
--- a/src/Stripe.net/Entities/ConnectCollectionTransfers/ConnectCollectionTransfer.cs
+++ b/src/Stripe.net/Entities/ConnectCollectionTransfers/ConnectCollectionTransfer.cs
@@ -3,25 +3,40 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class ConnectCollectionTransfer : StripeEntity<ConnectCollectionTransfer>, IHasId, IHasObject, IBalanceTransactionSource
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Amount transferred, in cents (or local equivalent).
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -30,6 +45,9 @@ public class ConnectCollectionTransfer : StripeEntity<ConnectCollectionTransfer>
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         #region Expandable Destination
@@ -39,6 +57,9 @@ public class ConnectCollectionTransfer : StripeEntity<ConnectCollectionTransfer>
         /// ID of the account that funds are being collected for.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DestinationId
         {
             get => this.InternalDestination?.Id;
@@ -52,6 +73,9 @@ public string DestinationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Destination
         {
             get => this.InternalDestination?.ExpandedObject;
@@ -60,6 +84,10 @@ public Account Destination
 
         [JsonProperty("destination")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalDestination { get; set; }
         #endregion
 
@@ -68,6 +96,9 @@ public Account Destination
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/CountrySpecs/CountrySpec.cs b/src/Stripe.net/Entities/CountrySpecs/CountrySpec.cs
index b6e8137c37..bc5251c7f4 100644
--- a/src/Stripe.net/Entities/CountrySpecs/CountrySpec.cs
+++ b/src/Stripe.net/Entities/CountrySpecs/CountrySpec.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Stripe needs to collect certain pieces of information about each account created. These
@@ -19,12 +22,18 @@ public class CountrySpec : StripeEntity<CountrySpec>, IHasId, IHasObject
         /// Unique identifier for the object. Represented as the ISO country code for this country.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -32,18 +41,27 @@ public class CountrySpec : StripeEntity<CountrySpec>, IHasId, IHasObject
         /// accounts.
         /// </summary>
         [JsonProperty("default_currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_currency")]
+#endif
         public string DefaultCurrency { get; set; }
 
         /// <summary>
         /// Currencies that can be accepted in the specific country (for transfers).
         /// </summary>
         [JsonProperty("supported_bank_account_currencies")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("supported_bank_account_currencies")]
+#endif
         public Dictionary<string, List<string>> SupportedBankAccountCurrencies { get; set; }
 
         /// <summary>
         /// Currencies that can be accepted in the specified country (for payments).
         /// </summary>
         [JsonProperty("supported_payment_currencies")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("supported_payment_currencies")]
+#endif
         public List<string> SupportedPaymentCurrencies { get; set; }
 
         /// <summary>
@@ -54,15 +72,24 @@ public class CountrySpec : StripeEntity<CountrySpec>, IHasId, IHasObject
         /// platform</a>.
         /// </summary>
         [JsonProperty("supported_payment_methods")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("supported_payment_methods")]
+#endif
         public List<string> SupportedPaymentMethods { get; set; }
 
         /// <summary>
         /// Countries that can accept transfers from the specified country.
         /// </summary>
         [JsonProperty("supported_transfer_countries")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("supported_transfer_countries")]
+#endif
         public List<string> SupportedTransferCountries { get; set; }
 
         [JsonProperty("verification_fields")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification_fields")]
+#endif
         public Dictionary<string, Dictionary<string, List<string>>> VerificationFields { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Coupons/Coupon.cs b/src/Stripe.net/Entities/Coupons/Coupon.cs
index 1445211a06..18ffdd61b9 100644
--- a/src/Stripe.net/Entities/Coupons/Coupon.cs
+++ b/src/Stripe.net/Entities/Coupons/Coupon.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A coupon contains information about a percent-off or amount-off discount you might want
@@ -22,12 +25,18 @@ public class Coupon : StripeEntity<Coupon>, IHasId, IHasMetadata, IHasObject
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -35,9 +44,15 @@ public class Coupon : StripeEntity<Coupon>, IHasId, IHasMetadata, IHasObject
         /// invoices for this customer.
         /// </summary>
         [JsonProperty("amount_off")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_off")]
+#endif
         public long? AmountOff { get; set; }
 
         [JsonProperty("applies_to")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("applies_to")]
+#endif
         public CouponAppliesTo AppliesTo { get; set; }
 
         /// <summary>
@@ -45,6 +60,10 @@ public class Coupon : StripeEntity<Coupon>, IHasId, IHasMetadata, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -53,6 +72,9 @@ public class Coupon : StripeEntity<Coupon>, IHasId, IHasMetadata, IHasObject
         /// take off.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -61,12 +83,19 @@ public class Coupon : StripeEntity<Coupon>, IHasId, IHasMetadata, IHasObject
         /// href="https://stripe.com/docs/currencies">supported currency</a>.
         /// </summary>
         [JsonProperty("currency_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency_options")]
+#endif
         public Dictionary<string, CouponCurrencyOptions> CurrencyOptions { get; set; }
 
         /// <summary>
         /// Whether this object is deleted or not.
         /// </summary>
         [JsonProperty("deleted", NullValueHandling = NullValueHandling.Ignore)]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+        [STJS.JsonIgnore(Condition = STJS.JsonIgnoreCondition.WhenWritingNull)]
+#endif
         public bool? Deleted { get; set; }
 
         /// <summary>
@@ -75,6 +104,9 @@ public class Coupon : StripeEntity<Coupon>, IHasId, IHasMetadata, IHasObject
         /// One of: <c>forever</c>, <c>once</c>, or <c>repeating</c>.
         /// </summary>
         [JsonProperty("duration")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("duration")]
+#endif
         public string Duration { get; set; }
 
         /// <summary>
@@ -82,6 +114,9 @@ public class Coupon : StripeEntity<Coupon>, IHasId, IHasMetadata, IHasObject
         /// coupon <c>duration</c> is <c>forever</c> or <c>once</c>.
         /// </summary>
         [JsonProperty("duration_in_months")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("duration_in_months")]
+#endif
         public long? DurationInMonths { get; set; }
 
         /// <summary>
@@ -89,6 +124,9 @@ public class Coupon : StripeEntity<Coupon>, IHasId, IHasMetadata, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -96,6 +134,9 @@ public class Coupon : StripeEntity<Coupon>, IHasId, IHasMetadata, IHasObject
         /// before it is no longer valid.
         /// </summary>
         [JsonProperty("max_redemptions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("max_redemptions")]
+#endif
         public long? MaxRedemptions { get; set; }
 
         /// <summary>
@@ -104,12 +145,18 @@ public class Coupon : StripeEntity<Coupon>, IHasId, IHasMetadata, IHasObject
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Name of the coupon displayed to customers on for instance invoices or receipts.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -118,6 +165,9 @@ public class Coupon : StripeEntity<Coupon>, IHasId, IHasMetadata, IHasObject
         /// local equivalent)100 invoice $ (or local equivalent)50 instead.
         /// </summary>
         [JsonProperty("percent_off")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percent_off")]
+#endif
         public decimal? PercentOff { get; set; }
 
         /// <summary>
@@ -125,12 +175,19 @@ public class Coupon : StripeEntity<Coupon>, IHasId, IHasMetadata, IHasObject
         /// </summary>
         [JsonProperty("redeem_by")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("redeem_by")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? RedeemBy { get; set; }
 
         /// <summary>
         /// Number of times this coupon has been applied to a customer.
         /// </summary>
         [JsonProperty("times_redeemed")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("times_redeemed")]
+#endif
         public long TimesRedeemed { get; set; }
 
         /// <summary>
@@ -138,6 +195,9 @@ public class Coupon : StripeEntity<Coupon>, IHasId, IHasMetadata, IHasObject
         /// customer.
         /// </summary>
         [JsonProperty("valid")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("valid")]
+#endif
         public bool Valid { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Coupons/CouponAppliesTo.cs b/src/Stripe.net/Entities/Coupons/CouponAppliesTo.cs
index 6f45866e5a..a7b853f363 100644
--- a/src/Stripe.net/Entities/Coupons/CouponAppliesTo.cs
+++ b/src/Stripe.net/Entities/Coupons/CouponAppliesTo.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CouponAppliesTo : StripeEntity<CouponAppliesTo>
     {
@@ -10,6 +13,9 @@ public class CouponAppliesTo : StripeEntity<CouponAppliesTo>
         /// A list of product IDs this coupon applies to.
         /// </summary>
         [JsonProperty("products")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("products")]
+#endif
         public List<string> Products { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Coupons/CouponCurrencyOptions.cs b/src/Stripe.net/Entities/Coupons/CouponCurrencyOptions.cs
index 009cd6d4e4..5bd42f473f 100644
--- a/src/Stripe.net/Entities/Coupons/CouponCurrencyOptions.cs
+++ b/src/Stripe.net/Entities/Coupons/CouponCurrencyOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CouponCurrencyOptions : StripeEntity<CouponCurrencyOptions>
     {
@@ -10,6 +13,9 @@ public class CouponCurrencyOptions : StripeEntity<CouponCurrencyOptions>
         /// invoices for this customer.
         /// </summary>
         [JsonProperty("amount_off")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_off")]
+#endif
         public long AmountOff { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/CreditNoteLineItems/CreditNoteLineItem.cs b/src/Stripe.net/Entities/CreditNoteLineItems/CreditNoteLineItem.cs
index 87ee59cd3f..85127767dc 100644
--- a/src/Stripe.net/Entities/CreditNoteLineItems/CreditNoteLineItem.cs
+++ b/src/Stripe.net/Entities/CreditNoteLineItems/CreditNoteLineItem.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// The credit note line item object.
@@ -13,12 +16,18 @@ public class CreditNoteLineItem : StripeEntity<CreditNoteLineItem>, IHasId, IHas
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class CreditNoteLineItem : StripeEntity<CreditNoteLineItem>, IHasId, IHas
         /// credited for this line item, excluding (exclusive) tax and discounts.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -33,12 +45,18 @@ public class CreditNoteLineItem : StripeEntity<CreditNoteLineItem>, IHasId, IHas
         /// for this line item, excluding all tax and discounts.
         /// </summary>
         [JsonProperty("amount_excluding_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_excluding_tax")]
+#endif
         public long? AmountExcludingTax { get; set; }
 
         /// <summary>
         /// Description of the item being credited.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -46,18 +64,27 @@ public class CreditNoteLineItem : StripeEntity<CreditNoteLineItem>, IHasId, IHas
         /// credited for this line item.
         /// </summary>
         [JsonProperty("discount_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount_amount")]
+#endif
         public long DiscountAmount { get; set; }
 
         /// <summary>
         /// The amount of discount calculated per discount for this line item.
         /// </summary>
         [JsonProperty("discount_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount_amounts")]
+#endif
         public List<CreditNoteLineItemDiscountAmount> DiscountAmounts { get; set; }
 
         /// <summary>
         /// ID of the invoice line item being credited.
         /// </summary>
         [JsonProperty("invoice_line_item")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_line_item")]
+#endif
         public string InvoiceLineItem { get; set; }
 
         /// <summary>
@@ -65,30 +92,45 @@ public class CreditNoteLineItem : StripeEntity<CreditNoteLineItem>, IHasId, IHas
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
         /// The pretax credit amounts (ex: discount, credit grants, etc) for this line item.
         /// </summary>
         [JsonProperty("pretax_credit_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pretax_credit_amounts")]
+#endif
         public List<CreditNoteLineItemPretaxCreditAmount> PretaxCreditAmounts { get; set; }
 
         /// <summary>
         /// The number of units of product being credited.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         /// <summary>
         /// The amount of tax calculated per tax rate for this line item.
         /// </summary>
         [JsonProperty("tax_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_amounts")]
+#endif
         public List<CreditNoteTaxAmount> TaxAmounts { get; set; }
 
         /// <summary>
         /// The tax rates which apply to the line item.
         /// </summary>
         [JsonProperty("tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rates")]
+#endif
         public List<TaxRate> TaxRates { get; set; }
 
         /// <summary>
@@ -99,18 +141,27 @@ public class CreditNoteLineItem : StripeEntity<CreditNoteLineItem>, IHasId, IHas
         /// One of: <c>custom_line_item</c>, or <c>invoice_line_item</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
         /// The cost of each unit of product being credited.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
         /// Same as <c>unit_amount</c>, but contains a decimal value with at most 12 decimal places.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
 
         /// <summary>
@@ -118,6 +169,9 @@ public class CreditNoteLineItem : StripeEntity<CreditNoteLineItem>, IHasId, IHas
         /// for this line item, excluding all tax and discounts.
         /// </summary>
         [JsonProperty("unit_amount_excluding_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_excluding_tax")]
+#endif
         public decimal? UnitAmountExcludingTax { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/CreditNoteLineItems/CreditNoteLineItemDiscountAmount.cs b/src/Stripe.net/Entities/CreditNoteLineItems/CreditNoteLineItemDiscountAmount.cs
index ce93720bd1..974dc637d2 100644
--- a/src/Stripe.net/Entities/CreditNoteLineItems/CreditNoteLineItemDiscountAmount.cs
+++ b/src/Stripe.net/Entities/CreditNoteLineItems/CreditNoteLineItemDiscountAmount.cs
@@ -3,13 +3,22 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class CreditNoteLineItemDiscountAmount : StripeEntity<CreditNoteLineItemDiscountAmount>
     {
         /// <summary>
         /// The amount, in cents (or local equivalent), of the discount.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         #region Expandable Discount
@@ -19,6 +28,9 @@ public class CreditNoteLineItemDiscountAmount : StripeEntity<CreditNoteLineItemD
         /// The discount that was applied to get this discount amount.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DiscountId
         {
             get => this.InternalDiscount?.Id;
@@ -32,6 +44,9 @@ public string DiscountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Discount Discount
         {
             get => this.InternalDiscount?.ExpandedObject;
@@ -40,6 +55,10 @@ public Discount Discount
 
         [JsonProperty("discount")]
         [JsonConverter(typeof(ExpandableFieldConverter<Discount>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Discount>))]
+#endif
         internal ExpandableField<Discount> InternalDiscount { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/CreditNoteLineItems/CreditNoteLineItemPretaxCreditAmount.cs b/src/Stripe.net/Entities/CreditNoteLineItems/CreditNoteLineItemPretaxCreditAmount.cs
index b47d145797..a9ff410abb 100644
--- a/src/Stripe.net/Entities/CreditNoteLineItems/CreditNoteLineItemPretaxCreditAmount.cs
+++ b/src/Stripe.net/Entities/CreditNoteLineItems/CreditNoteLineItemPretaxCreditAmount.cs
@@ -3,13 +3,22 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class CreditNoteLineItemPretaxCreditAmount : StripeEntity<CreditNoteLineItemPretaxCreditAmount>
     {
         /// <summary>
         /// The amount, in cents (or local equivalent), of the pretax credit amount.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         #region Expandable CreditBalanceTransaction
@@ -19,6 +28,9 @@ public class CreditNoteLineItemPretaxCreditAmount : StripeEntity<CreditNoteLineI
         /// The credit balance transaction that was applied to get this pretax credit amount.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CreditBalanceTransactionId
         {
             get => this.InternalCreditBalanceTransaction?.Id;
@@ -32,6 +44,9 @@ public string CreditBalanceTransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Billing.CreditBalanceTransaction CreditBalanceTransaction
         {
             get => this.InternalCreditBalanceTransaction?.ExpandedObject;
@@ -40,6 +55,10 @@ public Billing.CreditBalanceTransaction CreditBalanceTransaction
 
         [JsonProperty("credit_balance_transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<Billing.CreditBalanceTransaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("credit_balance_transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Billing.CreditBalanceTransaction>))]
+#endif
         internal ExpandableField<Billing.CreditBalanceTransaction> InternalCreditBalanceTransaction { get; set; }
         #endregion
 
@@ -50,6 +69,9 @@ public Billing.CreditBalanceTransaction CreditBalanceTransaction
         /// The discount that was applied to get this pretax credit amount.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DiscountId
         {
             get => this.InternalDiscount?.Id;
@@ -63,6 +85,9 @@ public string DiscountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Discount Discount
         {
             get => this.InternalDiscount?.ExpandedObject;
@@ -71,6 +96,10 @@ public Discount Discount
 
         [JsonProperty("discount")]
         [JsonConverter(typeof(ExpandableFieldConverter<Discount>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Discount>))]
+#endif
         internal ExpandableField<Discount> InternalDiscount { get; set; }
         #endregion
 
@@ -79,6 +108,9 @@ public Discount Discount
         /// One of: <c>credit_balance_transaction</c>, or <c>discount</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/CreditNotes/CreditNote.cs b/src/Stripe.net/Entities/CreditNotes/CreditNote.cs
index 18ca72a3a1..bfb1cf15c8 100644
--- a/src/Stripe.net/Entities/CreditNotes/CreditNote.cs
+++ b/src/Stripe.net/Entities/CreditNotes/CreditNote.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Issue a credit note to adjust an invoice's amount after the invoice is finalized.
@@ -12,18 +15,27 @@ namespace Stripe
     /// Related guide: <a href="https://stripe.com/docs/billing/invoices/credit-notes">Credit
     /// notes</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class CreditNote : StripeEntity<CreditNote>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -31,12 +43,18 @@ public class CreditNote : StripeEntity<CreditNote>, IHasId, IHasMetadata, IHasOb
         /// credit note, including tax.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
         /// This is the sum of all the shipping amounts.
         /// </summary>
         [JsonProperty("amount_shipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_shipping")]
+#endif
         public long AmountShipping { get; set; }
 
         /// <summary>
@@ -44,6 +62,10 @@ public class CreditNote : StripeEntity<CreditNote>, IHasId, IHasMetadata, IHasOb
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -52,6 +74,9 @@ public class CreditNote : StripeEntity<CreditNote>, IHasId, IHasMetadata, IHasOb
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         #region Expandable Customer
@@ -61,6 +86,9 @@ public class CreditNote : StripeEntity<CreditNote>, IHasId, IHasMetadata, IHasOb
         /// ID of the customer.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerId
         {
             get => this.InternalCustomer?.Id;
@@ -74,6 +102,9 @@ public string CustomerId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Customer Customer
         {
             get => this.InternalCustomer?.ExpandedObject;
@@ -82,6 +113,10 @@ public Customer Customer
 
         [JsonProperty("customer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Customer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Customer>))]
+#endif
         internal ExpandableField<Customer> InternalCustomer { get; set; }
         #endregion
 
@@ -92,6 +127,9 @@ public Customer Customer
         /// Customer balance transaction related to this credit note.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerBalanceTransactionId
         {
             get => this.InternalCustomerBalanceTransaction?.Id;
@@ -105,6 +143,9 @@ public string CustomerBalanceTransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public CustomerBalanceTransaction CustomerBalanceTransaction
         {
             get => this.InternalCustomerBalanceTransaction?.ExpandedObject;
@@ -113,6 +154,10 @@ public CustomerBalanceTransaction CustomerBalanceTransaction
 
         [JsonProperty("customer_balance_transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<CustomerBalanceTransaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_balance_transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<CustomerBalanceTransaction>))]
+#endif
         internal ExpandableField<CustomerBalanceTransaction> InternalCustomerBalanceTransaction { get; set; }
         #endregion
 
@@ -121,12 +166,18 @@ public CustomerBalanceTransaction CustomerBalanceTransaction
         /// discount that was credited.
         /// </summary>
         [JsonProperty("discount_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount_amount")]
+#endif
         public long DiscountAmount { get; set; }
 
         /// <summary>
         /// The aggregate amounts calculated per discount for all line items.
         /// </summary>
         [JsonProperty("discount_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount_amounts")]
+#endif
         public List<CreditNoteDiscountAmount> DiscountAmounts { get; set; }
 
         /// <summary>
@@ -136,6 +187,10 @@ public CustomerBalanceTransaction CustomerBalanceTransaction
         /// </summary>
         [JsonProperty("effective_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("effective_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? EffectiveAt { get; set; }
 
         #region Expandable Invoice
@@ -145,6 +200,9 @@ public CustomerBalanceTransaction CustomerBalanceTransaction
         /// ID of the invoice.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string InvoiceId
         {
             get => this.InternalInvoice?.Id;
@@ -158,6 +216,9 @@ public string InvoiceId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Invoice Invoice
         {
             get => this.InternalInvoice?.ExpandedObject;
@@ -166,6 +227,10 @@ public Invoice Invoice
 
         [JsonProperty("invoice")]
         [JsonConverter(typeof(ExpandableFieldConverter<Invoice>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Invoice>))]
+#endif
         internal ExpandableField<Invoice> InternalInvoice { get; set; }
         #endregion
 
@@ -173,6 +238,9 @@ public Invoice Invoice
         /// Line items that make up the credit note.
         /// </summary>
         [JsonProperty("lines")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lines")]
+#endif
         public StripeList<CreditNoteLineItem> Lines { get; set; }
 
         /// <summary>
@@ -180,12 +248,18 @@ public Invoice Invoice
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
         /// Customer-facing text that appears on the credit note PDF.
         /// </summary>
         [JsonProperty("memo")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("memo")]
+#endif
         public string Memo { get; set; }
 
         /// <summary>
@@ -194,6 +268,9 @@ public Invoice Invoice
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -201,24 +278,36 @@ public Invoice Invoice
         /// the credit note and its associated invoice.
         /// </summary>
         [JsonProperty("number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("number")]
+#endif
         public string Number { get; set; }
 
         /// <summary>
         /// Amount that was credited outside of Stripe.
         /// </summary>
         [JsonProperty("out_of_band_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("out_of_band_amount")]
+#endif
         public long? OutOfBandAmount { get; set; }
 
         /// <summary>
         /// The link to download the PDF of the credit note.
         /// </summary>
         [JsonProperty("pdf")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pdf")]
+#endif
         public string Pdf { get; set; }
 
         /// <summary>
         /// The pretax credit amounts (ex: discount, credit grants, etc) for all line items.
         /// </summary>
         [JsonProperty("pretax_credit_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pretax_credit_amounts")]
+#endif
         public List<CreditNotePretaxCreditAmount> PretaxCreditAmounts { get; set; }
 
         /// <summary>
@@ -228,6 +317,9 @@ public Invoice Invoice
         /// <c>product_unsatisfactory</c>.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
 
         #region Expandable Refund
@@ -237,6 +329,9 @@ public Invoice Invoice
         /// Refund related to this credit note.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string RefundId
         {
             get => this.InternalRefund?.Id;
@@ -250,6 +345,9 @@ public string RefundId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Refund Refund
         {
             get => this.InternalRefund?.ExpandedObject;
@@ -258,6 +356,10 @@ public Refund Refund
 
         [JsonProperty("refund")]
         [JsonConverter(typeof(ExpandableFieldConverter<Refund>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Refund>))]
+#endif
         internal ExpandableField<Refund> InternalRefund { get; set; }
         #endregion
 
@@ -265,6 +367,9 @@ public Refund Refund
         /// The details of the cost of shipping, including the ShippingRate applied to the invoice.
         /// </summary>
         [JsonProperty("shipping_cost")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_cost")]
+#endif
         public CreditNoteShippingCost ShippingCost { get; set; }
 
         /// <summary>
@@ -274,6 +379,9 @@ public Refund Refund
         /// One of: <c>issued</c>, or <c>void</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -281,6 +389,9 @@ public Refund Refund
         /// note, excluding exclusive tax and invoice level discounts.
         /// </summary>
         [JsonProperty("subtotal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subtotal")]
+#endif
         public long Subtotal { get; set; }
 
         /// <summary>
@@ -288,12 +399,18 @@ public Refund Refund
         /// note, excluding all tax and invoice level discounts.
         /// </summary>
         [JsonProperty("subtotal_excluding_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subtotal_excluding_tax")]
+#endif
         public long? SubtotalExcludingTax { get; set; }
 
         /// <summary>
         /// The aggregate amounts calculated per tax rate for all line items.
         /// </summary>
         [JsonProperty("tax_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_amounts")]
+#endif
         public List<CreditNoteTaxAmount> TaxAmounts { get; set; }
 
         /// <summary>
@@ -301,6 +418,9 @@ public Refund Refund
         /// credit note, including tax and all discount.
         /// </summary>
         [JsonProperty("total")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("total")]
+#endif
         public long Total { get; set; }
 
         /// <summary>
@@ -308,6 +428,9 @@ public Refund Refund
         /// credit note, excluding tax, but including discounts.
         /// </summary>
         [JsonProperty("total_excluding_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("total_excluding_tax")]
+#endif
         public long? TotalExcludingTax { get; set; }
 
         /// <summary>
@@ -317,6 +440,9 @@ public Refund Refund
         /// One of: <c>post_payment</c>, or <c>pre_payment</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
@@ -324,6 +450,10 @@ public Refund Refund
         /// </summary>
         [JsonProperty("voided_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("voided_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? VoidedAt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/CreditNotes/CreditNoteDiscountAmount.cs b/src/Stripe.net/Entities/CreditNotes/CreditNoteDiscountAmount.cs
index 26caad612c..c496f73128 100644
--- a/src/Stripe.net/Entities/CreditNotes/CreditNoteDiscountAmount.cs
+++ b/src/Stripe.net/Entities/CreditNotes/CreditNoteDiscountAmount.cs
@@ -3,13 +3,22 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class CreditNoteDiscountAmount : StripeEntity<CreditNoteDiscountAmount>
     {
         /// <summary>
         /// The amount, in cents (or local equivalent), of the discount.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         #region Expandable Discount
@@ -19,6 +28,9 @@ public class CreditNoteDiscountAmount : StripeEntity<CreditNoteDiscountAmount>
         /// The discount that was applied to get this discount amount.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DiscountId
         {
             get => this.InternalDiscount?.Id;
@@ -32,6 +44,9 @@ public string DiscountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Discount Discount
         {
             get => this.InternalDiscount?.ExpandedObject;
@@ -40,6 +55,10 @@ public Discount Discount
 
         [JsonProperty("discount")]
         [JsonConverter(typeof(ExpandableFieldConverter<Discount>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Discount>))]
+#endif
         internal ExpandableField<Discount> InternalDiscount { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/CreditNotes/CreditNotePretaxCreditAmount.cs b/src/Stripe.net/Entities/CreditNotes/CreditNotePretaxCreditAmount.cs
index 720acdadc5..9940eb91c0 100644
--- a/src/Stripe.net/Entities/CreditNotes/CreditNotePretaxCreditAmount.cs
+++ b/src/Stripe.net/Entities/CreditNotes/CreditNotePretaxCreditAmount.cs
@@ -3,13 +3,22 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class CreditNotePretaxCreditAmount : StripeEntity<CreditNotePretaxCreditAmount>
     {
         /// <summary>
         /// The amount, in cents (or local equivalent), of the pretax credit amount.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         #region Expandable CreditBalanceTransaction
@@ -19,6 +28,9 @@ public class CreditNotePretaxCreditAmount : StripeEntity<CreditNotePretaxCreditA
         /// The credit balance transaction that was applied to get this pretax credit amount.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CreditBalanceTransactionId
         {
             get => this.InternalCreditBalanceTransaction?.Id;
@@ -32,6 +44,9 @@ public string CreditBalanceTransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Billing.CreditBalanceTransaction CreditBalanceTransaction
         {
             get => this.InternalCreditBalanceTransaction?.ExpandedObject;
@@ -40,6 +55,10 @@ public Billing.CreditBalanceTransaction CreditBalanceTransaction
 
         [JsonProperty("credit_balance_transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<Billing.CreditBalanceTransaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("credit_balance_transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Billing.CreditBalanceTransaction>))]
+#endif
         internal ExpandableField<Billing.CreditBalanceTransaction> InternalCreditBalanceTransaction { get; set; }
         #endregion
 
@@ -50,6 +69,9 @@ public Billing.CreditBalanceTransaction CreditBalanceTransaction
         /// The discount that was applied to get this pretax credit amount.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DiscountId
         {
             get => this.InternalDiscount?.Id;
@@ -63,6 +85,9 @@ public string DiscountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Discount Discount
         {
             get => this.InternalDiscount?.ExpandedObject;
@@ -71,6 +96,10 @@ public Discount Discount
 
         [JsonProperty("discount")]
         [JsonConverter(typeof(ExpandableFieldConverter<Discount>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Discount>))]
+#endif
         internal ExpandableField<Discount> InternalDiscount { get; set; }
         #endregion
 
@@ -79,6 +108,9 @@ public Discount Discount
         /// One of: <c>credit_balance_transaction</c>, or <c>discount</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/CreditNotes/CreditNoteShippingCost.cs b/src/Stripe.net/Entities/CreditNotes/CreditNoteShippingCost.cs
index a516f4eb45..273d10dd83 100644
--- a/src/Stripe.net/Entities/CreditNotes/CreditNoteShippingCost.cs
+++ b/src/Stripe.net/Entities/CreditNotes/CreditNoteShippingCost.cs
@@ -4,25 +4,40 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class CreditNoteShippingCost : StripeEntity<CreditNoteShippingCost>
     {
         /// <summary>
         /// Total shipping cost before any taxes are applied.
         /// </summary>
         [JsonProperty("amount_subtotal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_subtotal")]
+#endif
         public long AmountSubtotal { get; set; }
 
         /// <summary>
         /// Total tax amount applied due to shipping costs. If no tax was applied, defaults to 0.
         /// </summary>
         [JsonProperty("amount_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_tax")]
+#endif
         public long AmountTax { get; set; }
 
         /// <summary>
         /// Total shipping cost after taxes are applied.
         /// </summary>
         [JsonProperty("amount_total")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_total")]
+#endif
         public long AmountTotal { get; set; }
 
         #region Expandable ShippingRate
@@ -32,6 +47,9 @@ public class CreditNoteShippingCost : StripeEntity<CreditNoteShippingCost>
         /// The ID of the ShippingRate for this invoice.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ShippingRateId
         {
             get => this.InternalShippingRate?.Id;
@@ -45,6 +63,9 @@ public string ShippingRateId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public ShippingRate ShippingRate
         {
             get => this.InternalShippingRate?.ExpandedObject;
@@ -53,6 +74,10 @@ public ShippingRate ShippingRate
 
         [JsonProperty("shipping_rate")]
         [JsonConverter(typeof(ExpandableFieldConverter<ShippingRate>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_rate")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<ShippingRate>))]
+#endif
         internal ExpandableField<ShippingRate> InternalShippingRate { get; set; }
         #endregion
 
@@ -60,6 +85,9 @@ public ShippingRate ShippingRate
         /// The taxes applied to the shipping rate.
         /// </summary>
         [JsonProperty("taxes")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxes")]
+#endif
         public List<CreditNoteShippingCostTax> Taxes { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/CreditNotes/CreditNoteShippingCostTax.cs b/src/Stripe.net/Entities/CreditNotes/CreditNoteShippingCostTax.cs
index fe23aebc7e..f9ccec715a 100644
--- a/src/Stripe.net/Entities/CreditNotes/CreditNoteShippingCostTax.cs
+++ b/src/Stripe.net/Entities/CreditNotes/CreditNoteShippingCostTax.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditNoteShippingCostTax : StripeEntity<CreditNoteShippingCostTax>
     {
@@ -9,6 +12,9 @@ public class CreditNoteShippingCostTax : StripeEntity<CreditNoteShippingCostTax>
         /// Amount of tax applied for this rate.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class CreditNoteShippingCostTax : StripeEntity<CreditNoteShippingCostTax>
         /// Related guide: <a href="https://stripe.com/billing/taxes/tax-rates">Tax rates</a>.
         /// </summary>
         [JsonProperty("rate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("rate")]
+#endif
         public TaxRate Rate { get; set; }
 
         /// <summary>
@@ -33,12 +42,18 @@ public class CreditNoteShippingCostTax : StripeEntity<CreditNoteShippingCostTax>
         /// <c>standard_rated</c>, <c>taxable_basis_reduced</c>, or <c>zero_rated</c>.
         /// </summary>
         [JsonProperty("taxability_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxability_reason")]
+#endif
         public string TaxabilityReason { get; set; }
 
         /// <summary>
         /// The amount on which tax is calculated, in cents (or local equivalent).
         /// </summary>
         [JsonProperty("taxable_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxable_amount")]
+#endif
         public long? TaxableAmount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/CreditNotes/CreditNoteTaxAmount.cs b/src/Stripe.net/Entities/CreditNotes/CreditNoteTaxAmount.cs
index e5a47b6b4c..d6944cad90 100644
--- a/src/Stripe.net/Entities/CreditNotes/CreditNoteTaxAmount.cs
+++ b/src/Stripe.net/Entities/CreditNotes/CreditNoteTaxAmount.cs
@@ -3,19 +3,31 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class CreditNoteTaxAmount : StripeEntity<CreditNoteTaxAmount>
     {
         /// <summary>
         /// The amount, in cents (or local equivalent), of the tax.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
         /// Whether this tax amount is inclusive or exclusive.
         /// </summary>
         [JsonProperty("inclusive")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("inclusive")]
+#endif
         public bool Inclusive { get; set; }
 
         #region Expandable TaxRate
@@ -25,6 +37,9 @@ public class CreditNoteTaxAmount : StripeEntity<CreditNoteTaxAmount>
         /// The tax rate that was applied to get this tax amount.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string TaxRateId
         {
             get => this.InternalTaxRate?.Id;
@@ -38,6 +53,9 @@ public string TaxRateId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public TaxRate TaxRate
         {
             get => this.InternalTaxRate?.ExpandedObject;
@@ -46,6 +64,10 @@ public TaxRate TaxRate
 
         [JsonProperty("tax_rate")]
         [JsonConverter(typeof(ExpandableFieldConverter<TaxRate>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rate")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<TaxRate>))]
+#endif
         internal ExpandableField<TaxRate> InternalTaxRate { get; set; }
         #endregion
 
@@ -59,12 +81,18 @@ public TaxRate TaxRate
         /// <c>standard_rated</c>, <c>taxable_basis_reduced</c>, or <c>zero_rated</c>.
         /// </summary>
         [JsonProperty("taxability_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxability_reason")]
+#endif
         public string TaxabilityReason { get; set; }
 
         /// <summary>
         /// The amount on which tax is calculated, in cents (or local equivalent).
         /// </summary>
         [JsonProperty("taxable_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxable_amount")]
+#endif
         public long? TaxableAmount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/CustomerBalanceTransactions/CustomerBalanceTransaction.cs b/src/Stripe.net/Entities/CustomerBalanceTransactions/CustomerBalanceTransaction.cs
index 02f63d202c..71a7bed11c 100644
--- a/src/Stripe.net/Entities/CustomerBalanceTransactions/CustomerBalanceTransaction.cs
+++ b/src/Stripe.net/Entities/CustomerBalanceTransactions/CustomerBalanceTransaction.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Each customer has a <a
@@ -18,18 +21,27 @@ namespace Stripe
     /// Related guide: <a href="https://stripe.com/docs/billing/customer/balance">Customer
     /// balance</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class CustomerBalanceTransaction : StripeEntity<CustomerBalanceTransaction>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -37,6 +49,9 @@ public class CustomerBalanceTransaction : StripeEntity<CustomerBalanceTransactio
         /// and a positive value is a debit to the customer's <c>balance</c>.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -44,6 +59,10 @@ public class CustomerBalanceTransaction : StripeEntity<CustomerBalanceTransactio
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         #region Expandable CreditNote
@@ -53,6 +72,9 @@ public class CustomerBalanceTransaction : StripeEntity<CustomerBalanceTransactio
         /// The ID of the credit note (if any) related to the transaction.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CreditNoteId
         {
             get => this.InternalCreditNote?.Id;
@@ -66,6 +88,9 @@ public string CreditNoteId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public CreditNote CreditNote
         {
             get => this.InternalCreditNote?.ExpandedObject;
@@ -74,6 +99,10 @@ public CreditNote CreditNote
 
         [JsonProperty("credit_note")]
         [JsonConverter(typeof(ExpandableFieldConverter<CreditNote>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("credit_note")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<CreditNote>))]
+#endif
         internal ExpandableField<CreditNote> InternalCreditNote { get; set; }
         #endregion
 
@@ -83,6 +112,9 @@ public CreditNote CreditNote
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         #region Expandable Customer
@@ -92,6 +124,9 @@ public CreditNote CreditNote
         /// The ID of the customer the transaction belongs to.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerId
         {
             get => this.InternalCustomer?.Id;
@@ -105,6 +140,9 @@ public string CustomerId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Customer Customer
         {
             get => this.InternalCustomer?.ExpandedObject;
@@ -113,6 +151,10 @@ public Customer Customer
 
         [JsonProperty("customer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Customer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Customer>))]
+#endif
         internal ExpandableField<Customer> InternalCustomer { get; set; }
         #endregion
 
@@ -120,6 +162,9 @@ public Customer Customer
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -128,6 +173,9 @@ public Customer Customer
         /// amount due on the customer's next invoice.
         /// </summary>
         [JsonProperty("ending_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ending_balance")]
+#endif
         public long EndingBalance { get; set; }
 
         #region Expandable Invoice
@@ -137,6 +185,9 @@ public Customer Customer
         /// The ID of the invoice (if any) related to the transaction.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string InvoiceId
         {
             get => this.InternalInvoice?.Id;
@@ -150,6 +201,9 @@ public string InvoiceId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Invoice Invoice
         {
             get => this.InternalInvoice?.ExpandedObject;
@@ -158,6 +212,10 @@ public Invoice Invoice
 
         [JsonProperty("invoice")]
         [JsonConverter(typeof(ExpandableFieldConverter<Invoice>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Invoice>))]
+#endif
         internal ExpandableField<Invoice> InternalInvoice { get; set; }
         #endregion
 
@@ -166,6 +224,9 @@ public Invoice Invoice
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -174,6 +235,9 @@ public Invoice Invoice
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -189,6 +253,9 @@ public Invoice Invoice
         /// <c>unspent_receiver_credit</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransaction.cs b/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransaction.cs
index 9637c5ec32..23f6956900 100644
--- a/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransaction.cs
+++ b/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransaction.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Customers with certain payments enabled have a cash balance, representing funds that
@@ -12,24 +15,39 @@ namespace Stripe
     /// This includes funding by the customer, allocation to payments, and refunds to the
     /// customer.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class CustomerCashBalanceTransaction : StripeEntity<CustomerCashBalanceTransaction>, IHasId, IHasObject, IBalanceTransactionSource
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         [JsonProperty("adjusted_for_overdraft")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("adjusted_for_overdraft")]
+#endif
         public CustomerCashBalanceTransactionAdjustedForOverdraft AdjustedForOverdraft { get; set; }
 
         [JsonProperty("applied_to_payment")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("applied_to_payment")]
+#endif
         public CustomerCashBalanceTransactionAppliedToPayment AppliedToPayment { get; set; }
 
         /// <summary>
@@ -37,6 +55,10 @@ public class CustomerCashBalanceTransaction : StripeEntity<CustomerCashBalanceTr
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -45,6 +67,9 @@ public class CustomerCashBalanceTransaction : StripeEntity<CustomerCashBalanceTr
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         #region Expandable Customer
@@ -54,6 +79,9 @@ public class CustomerCashBalanceTransaction : StripeEntity<CustomerCashBalanceTr
         /// The customer whose available cash balance changed as a result of this transaction.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerId
         {
             get => this.InternalCustomer?.Id;
@@ -67,6 +95,9 @@ public string CustomerId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Customer Customer
         {
             get => this.InternalCustomer?.ExpandedObject;
@@ -75,6 +106,10 @@ public Customer Customer
 
         [JsonProperty("customer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Customer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Customer>))]
+#endif
         internal ExpandableField<Customer> InternalCustomer { get; set; }
         #endregion
 
@@ -84,9 +119,15 @@ public Customer Customer
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("ending_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ending_balance")]
+#endif
         public long EndingBalance { get; set; }
 
         [JsonProperty("funded")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funded")]
+#endif
         public CustomerCashBalanceTransactionFunded Funded { get; set; }
 
         /// <summary>
@@ -94,6 +135,9 @@ public Customer Customer
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -103,12 +147,21 @@ public Customer Customer
         /// represents funds being removed from the cash balance.
         /// </summary>
         [JsonProperty("net_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("net_amount")]
+#endif
         public long NetAmount { get; set; }
 
         [JsonProperty("refunded_from_payment")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refunded_from_payment")]
+#endif
         public CustomerCashBalanceTransactionRefundedFromPayment RefundedFromPayment { get; set; }
 
         [JsonProperty("transferred_to_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transferred_to_balance")]
+#endif
         public CustomerCashBalanceTransactionTransferredToBalance TransferredToBalance { get; set; }
 
         /// <summary>
@@ -121,9 +174,15 @@ public Customer Customer
         /// <c>unapplied_from_payment</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         [JsonProperty("unapplied_from_payment")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unapplied_from_payment")]
+#endif
         public CustomerCashBalanceTransactionUnappliedFromPayment UnappliedFromPayment { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionAdjustedForOverdraft.cs b/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionAdjustedForOverdraft.cs
index 7e8f130ec6..4a1bde8356 100644
--- a/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionAdjustedForOverdraft.cs
+++ b/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionAdjustedForOverdraft.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class CustomerCashBalanceTransactionAdjustedForOverdraft : StripeEntity<CustomerCashBalanceTransactionAdjustedForOverdraft>
     {
         #region Expandable BalanceTransaction
@@ -14,6 +20,9 @@ public class CustomerCashBalanceTransactionAdjustedForOverdraft : StripeEntity<C
         /// Transaction</a> that corresponds to funds taken out of your Stripe balance.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string BalanceTransactionId
         {
             get => this.InternalBalanceTransaction?.Id;
@@ -28,6 +37,9 @@ public string BalanceTransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public BalanceTransaction BalanceTransaction
         {
             get => this.InternalBalanceTransaction?.ExpandedObject;
@@ -36,6 +48,10 @@ public BalanceTransaction BalanceTransaction
 
         [JsonProperty("balance_transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<BalanceTransaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("balance_transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<BalanceTransaction>))]
+#endif
         internal ExpandableField<BalanceTransaction> InternalBalanceTransaction { get; set; }
         #endregion
 
@@ -48,6 +64,9 @@ public BalanceTransaction BalanceTransaction
         /// funds.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string LinkedTransactionId
         {
             get => this.InternalLinkedTransaction?.Id;
@@ -63,6 +82,9 @@ public string LinkedTransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public CustomerCashBalanceTransaction LinkedTransaction
         {
             get => this.InternalLinkedTransaction?.ExpandedObject;
@@ -71,6 +93,10 @@ public CustomerCashBalanceTransaction LinkedTransaction
 
         [JsonProperty("linked_transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<CustomerCashBalanceTransaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("linked_transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<CustomerCashBalanceTransaction>))]
+#endif
         internal ExpandableField<CustomerCashBalanceTransaction> InternalLinkedTransaction { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionAppliedToPayment.cs b/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionAppliedToPayment.cs
index a1cddc04fe..eb8dbec8cc 100644
--- a/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionAppliedToPayment.cs
+++ b/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionAppliedToPayment.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class CustomerCashBalanceTransactionAppliedToPayment : StripeEntity<CustomerCashBalanceTransactionAppliedToPayment>
     {
         #region Expandable PaymentIntent
@@ -14,6 +20,9 @@ public class CustomerCashBalanceTransactionAppliedToPayment : StripeEntity<Custo
         /// funds were applied to.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string PaymentIntentId
         {
             get => this.InternalPaymentIntent?.Id;
@@ -28,6 +37,9 @@ public string PaymentIntentId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PaymentIntent PaymentIntent
         {
             get => this.InternalPaymentIntent?.ExpandedObject;
@@ -36,6 +48,10 @@ public PaymentIntent PaymentIntent
 
         [JsonProperty("payment_intent")]
         [JsonConverter(typeof(ExpandableFieldConverter<PaymentIntent>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_intent")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PaymentIntent>))]
+#endif
         internal ExpandableField<PaymentIntent> InternalPaymentIntent { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionFunded.cs b/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionFunded.cs
index 7f265d4d6d..de10cf44d4 100644
--- a/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionFunded.cs
+++ b/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionFunded.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerCashBalanceTransactionFunded : StripeEntity<CustomerCashBalanceTransactionFunded>
     {
         [JsonProperty("bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_transfer")]
+#endif
         public CustomerCashBalanceTransactionFundedBankTransfer BankTransfer { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionFundedBankTransfer.cs b/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionFundedBankTransfer.cs
index 3988b3e49b..2a608453c6 100644
--- a/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionFundedBankTransfer.cs
+++ b/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionFundedBankTransfer.cs
@@ -2,22 +2,37 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerCashBalanceTransactionFundedBankTransfer : StripeEntity<CustomerCashBalanceTransactionFundedBankTransfer>
     {
         [JsonProperty("eu_bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eu_bank_transfer")]
+#endif
         public CustomerCashBalanceTransactionFundedBankTransferEuBankTransfer EuBankTransfer { get; set; }
 
         [JsonProperty("gb_bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gb_bank_transfer")]
+#endif
         public CustomerCashBalanceTransactionFundedBankTransferGbBankTransfer GbBankTransfer { get; set; }
 
         [JsonProperty("jp_bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("jp_bank_transfer")]
+#endif
         public CustomerCashBalanceTransactionFundedBankTransferJpBankTransfer JpBankTransfer { get; set; }
 
         /// <summary>
         /// The user-supplied reference field on the bank transfer.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
@@ -28,9 +43,15 @@ public class CustomerCashBalanceTransactionFundedBankTransfer : StripeEntity<Cus
         /// <c>mx_bank_transfer</c>, or <c>us_bank_transfer</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         [JsonProperty("us_bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_transfer")]
+#endif
         public CustomerCashBalanceTransactionFundedBankTransferUsBankTransfer UsBankTransfer { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionFundedBankTransferEuBankTransfer.cs b/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionFundedBankTransferEuBankTransfer.cs
index 979d197768..b9d969e970 100644
--- a/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionFundedBankTransferEuBankTransfer.cs
+++ b/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionFundedBankTransferEuBankTransfer.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerCashBalanceTransactionFundedBankTransferEuBankTransfer : StripeEntity<CustomerCashBalanceTransactionFundedBankTransferEuBankTransfer>
     {
@@ -9,18 +12,27 @@ public class CustomerCashBalanceTransactionFundedBankTransferEuBankTransfer : St
         /// The BIC of the bank of the sender of the funding.
         /// </summary>
         [JsonProperty("bic")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bic")]
+#endif
         public string Bic { get; set; }
 
         /// <summary>
         /// The last 4 digits of the IBAN of the sender of the funding.
         /// </summary>
         [JsonProperty("iban_last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iban_last4")]
+#endif
         public string IbanLast4 { get; set; }
 
         /// <summary>
         /// The full name of the sender, as supplied by the sending bank.
         /// </summary>
         [JsonProperty("sender_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sender_name")]
+#endif
         public string SenderName { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionFundedBankTransferGbBankTransfer.cs b/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionFundedBankTransferGbBankTransfer.cs
index 7754f1973d..93a2f36a2b 100644
--- a/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionFundedBankTransferGbBankTransfer.cs
+++ b/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionFundedBankTransferGbBankTransfer.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerCashBalanceTransactionFundedBankTransferGbBankTransfer : StripeEntity<CustomerCashBalanceTransactionFundedBankTransferGbBankTransfer>
     {
@@ -9,18 +12,27 @@ public class CustomerCashBalanceTransactionFundedBankTransferGbBankTransfer : St
         /// The last 4 digits of the account number of the sender of the funding.
         /// </summary>
         [JsonProperty("account_number_last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number_last4")]
+#endif
         public string AccountNumberLast4 { get; set; }
 
         /// <summary>
         /// The full name of the sender, as supplied by the sending bank.
         /// </summary>
         [JsonProperty("sender_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sender_name")]
+#endif
         public string SenderName { get; set; }
 
         /// <summary>
         /// The sort code of the bank of the sender of the funding.
         /// </summary>
         [JsonProperty("sort_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sort_code")]
+#endif
         public string SortCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionFundedBankTransferJpBankTransfer.cs b/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionFundedBankTransferJpBankTransfer.cs
index 9315392911..5922dd0292 100644
--- a/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionFundedBankTransferJpBankTransfer.cs
+++ b/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionFundedBankTransferJpBankTransfer.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerCashBalanceTransactionFundedBankTransferJpBankTransfer : StripeEntity<CustomerCashBalanceTransactionFundedBankTransferJpBankTransfer>
     {
@@ -9,18 +12,27 @@ public class CustomerCashBalanceTransactionFundedBankTransferJpBankTransfer : St
         /// The name of the bank of the sender of the funding.
         /// </summary>
         [JsonProperty("sender_bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sender_bank")]
+#endif
         public string SenderBank { get; set; }
 
         /// <summary>
         /// The name of the bank branch of the sender of the funding.
         /// </summary>
         [JsonProperty("sender_branch")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sender_branch")]
+#endif
         public string SenderBranch { get; set; }
 
         /// <summary>
         /// The full name of the sender, as supplied by the sending bank.
         /// </summary>
         [JsonProperty("sender_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sender_name")]
+#endif
         public string SenderName { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionFundedBankTransferUsBankTransfer.cs b/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionFundedBankTransferUsBankTransfer.cs
index 14fccd4666..3c0566a2bb 100644
--- a/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionFundedBankTransferUsBankTransfer.cs
+++ b/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionFundedBankTransferUsBankTransfer.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerCashBalanceTransactionFundedBankTransferUsBankTransfer : StripeEntity<CustomerCashBalanceTransactionFundedBankTransferUsBankTransfer>
     {
@@ -10,12 +13,18 @@ public class CustomerCashBalanceTransactionFundedBankTransferUsBankTransfer : St
         /// One of: <c>ach</c>, <c>domestic_wire_us</c>, or <c>swift</c>.
         /// </summary>
         [JsonProperty("network")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network")]
+#endif
         public string Network { get; set; }
 
         /// <summary>
         /// The full name of the sender, as supplied by the sending bank.
         /// </summary>
         [JsonProperty("sender_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sender_name")]
+#endif
         public string SenderName { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionRefundedFromPayment.cs b/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionRefundedFromPayment.cs
index 42a80bc899..ae8851bd7f 100644
--- a/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionRefundedFromPayment.cs
+++ b/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionRefundedFromPayment.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class CustomerCashBalanceTransactionRefundedFromPayment : StripeEntity<CustomerCashBalanceTransactionRefundedFromPayment>
     {
         #region Expandable Refund
@@ -14,6 +20,9 @@ public class CustomerCashBalanceTransactionRefundedFromPayment : StripeEntity<Cu
         /// funds into the customer's cash balance.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string RefundId
         {
             get => this.InternalRefund?.Id;
@@ -28,6 +37,9 @@ public string RefundId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Refund Refund
         {
             get => this.InternalRefund?.ExpandedObject;
@@ -36,6 +48,10 @@ public Refund Refund
 
         [JsonProperty("refund")]
         [JsonConverter(typeof(ExpandableFieldConverter<Refund>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Refund>))]
+#endif
         internal ExpandableField<Refund> InternalRefund { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionTransferredToBalance.cs b/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionTransferredToBalance.cs
index 5244dd2438..8b1f22bf00 100644
--- a/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionTransferredToBalance.cs
+++ b/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionTransferredToBalance.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class CustomerCashBalanceTransactionTransferredToBalance : StripeEntity<CustomerCashBalanceTransactionTransferredToBalance>
     {
         #region Expandable BalanceTransaction
@@ -14,6 +20,9 @@ public class CustomerCashBalanceTransactionTransferredToBalance : StripeEntity<C
         /// Transaction</a> that corresponds to funds transferred to your Stripe balance.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string BalanceTransactionId
         {
             get => this.InternalBalanceTransaction?.Id;
@@ -28,6 +37,9 @@ public string BalanceTransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public BalanceTransaction BalanceTransaction
         {
             get => this.InternalBalanceTransaction?.ExpandedObject;
@@ -36,6 +48,10 @@ public BalanceTransaction BalanceTransaction
 
         [JsonProperty("balance_transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<BalanceTransaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("balance_transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<BalanceTransaction>))]
+#endif
         internal ExpandableField<BalanceTransaction> InternalBalanceTransaction { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionUnappliedFromPayment.cs b/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionUnappliedFromPayment.cs
index cc30632d72..2110e897ec 100644
--- a/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionUnappliedFromPayment.cs
+++ b/src/Stripe.net/Entities/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionUnappliedFromPayment.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class CustomerCashBalanceTransactionUnappliedFromPayment : StripeEntity<CustomerCashBalanceTransactionUnappliedFromPayment>
     {
         #region Expandable PaymentIntent
@@ -14,6 +20,9 @@ public class CustomerCashBalanceTransactionUnappliedFromPayment : StripeEntity<C
         /// funds were unapplied from.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string PaymentIntentId
         {
             get => this.InternalPaymentIntent?.Id;
@@ -28,6 +37,9 @@ public string PaymentIntentId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PaymentIntent PaymentIntent
         {
             get => this.InternalPaymentIntent?.ExpandedObject;
@@ -36,6 +48,10 @@ public PaymentIntent PaymentIntent
 
         [JsonProperty("payment_intent")]
         [JsonConverter(typeof(ExpandableFieldConverter<PaymentIntent>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_intent")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PaymentIntent>))]
+#endif
         internal ExpandableField<PaymentIntent> InternalPaymentIntent { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/CustomerSessions/CustomerSession.cs b/src/Stripe.net/Entities/CustomerSessions/CustomerSession.cs
index 2272b8d30e..e9d8efd9c7 100644
--- a/src/Stripe.net/Entities/CustomerSessions/CustomerSession.cs
+++ b/src/Stripe.net/Entities/CustomerSessions/CustomerSession.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A Customer Session allows you to grant Stripe's frontend SDKs (like Stripe.js)
@@ -17,12 +20,18 @@ namespace Stripe
     /// href="https://stripe.com/payment-links/buy-button#pass-an-existing-customer">Customer
     /// Session with the Buy Button</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class CustomerSession : StripeEntity<CustomerSession>, IHasObject
     {
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -34,12 +43,18 @@ public class CustomerSession : StripeEntity<CustomerSession>, IHasObject
         /// Make sure that you have TLS enabled on any page that includes the client secret.
         /// </summary>
         [JsonProperty("client_secret")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("client_secret")]
+#endif
         public string ClientSecret { get; set; }
 
         /// <summary>
         /// Configuration for the components supported by this Customer Session.
         /// </summary>
         [JsonProperty("components")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("components")]
+#endif
         public CustomerSessionComponents Components { get; set; }
 
         /// <summary>
@@ -47,6 +62,10 @@ public class CustomerSession : StripeEntity<CustomerSession>, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         #region Expandable Customer
@@ -56,6 +75,9 @@ public class CustomerSession : StripeEntity<CustomerSession>, IHasObject
         /// The Customer the Customer Session was created for.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerId
         {
             get => this.InternalCustomer?.Id;
@@ -69,6 +91,9 @@ public string CustomerId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Customer Customer
         {
             get => this.InternalCustomer?.ExpandedObject;
@@ -77,6 +102,10 @@ public Customer Customer
 
         [JsonProperty("customer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Customer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Customer>))]
+#endif
         internal ExpandableField<Customer> InternalCustomer { get; set; }
         #endregion
 
@@ -85,6 +114,10 @@ public Customer Customer
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime ExpiresAt { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -92,6 +125,9 @@ public Customer Customer
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/CustomerSessions/CustomerSessionComponents.cs b/src/Stripe.net/Entities/CustomerSessions/CustomerSessionComponents.cs
index df583fcfd6..6192c24efb 100644
--- a/src/Stripe.net/Entities/CustomerSessions/CustomerSessionComponents.cs
+++ b/src/Stripe.net/Entities/CustomerSessions/CustomerSessionComponents.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerSessionComponents : StripeEntity<CustomerSessionComponents>
     {
@@ -9,18 +12,27 @@ public class CustomerSessionComponents : StripeEntity<CustomerSessionComponents>
         /// This hash contains whether the buy button is enabled.
         /// </summary>
         [JsonProperty("buy_button")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("buy_button")]
+#endif
         public CustomerSessionComponentsBuyButton BuyButton { get; set; }
 
         /// <summary>
         /// This hash contains whether the Payment Element is enabled and the features it supports.
         /// </summary>
         [JsonProperty("payment_element")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_element")]
+#endif
         public CustomerSessionComponentsPaymentElement PaymentElement { get; set; }
 
         /// <summary>
         /// This hash contains whether the pricing table is enabled.
         /// </summary>
         [JsonProperty("pricing_table")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pricing_table")]
+#endif
         public CustomerSessionComponentsPricingTable PricingTable { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/CustomerSessions/CustomerSessionComponentsBuyButton.cs b/src/Stripe.net/Entities/CustomerSessions/CustomerSessionComponentsBuyButton.cs
index 5eaac587fb..d2538a261f 100644
--- a/src/Stripe.net/Entities/CustomerSessions/CustomerSessionComponentsBuyButton.cs
+++ b/src/Stripe.net/Entities/CustomerSessions/CustomerSessionComponentsBuyButton.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerSessionComponentsBuyButton : StripeEntity<CustomerSessionComponentsBuyButton>
     {
@@ -9,6 +12,9 @@ public class CustomerSessionComponentsBuyButton : StripeEntity<CustomerSessionCo
         /// Whether the buy button is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/CustomerSessions/CustomerSessionComponentsPaymentElement.cs b/src/Stripe.net/Entities/CustomerSessions/CustomerSessionComponentsPaymentElement.cs
index 5af436fcc2..70e1248286 100644
--- a/src/Stripe.net/Entities/CustomerSessions/CustomerSessionComponentsPaymentElement.cs
+++ b/src/Stripe.net/Entities/CustomerSessions/CustomerSessionComponentsPaymentElement.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerSessionComponentsPaymentElement : StripeEntity<CustomerSessionComponentsPaymentElement>
     {
@@ -9,12 +12,18 @@ public class CustomerSessionComponentsPaymentElement : StripeEntity<CustomerSess
         /// Whether the Payment Element is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         /// <summary>
         /// This hash defines whether the Payment Element supports certain features.
         /// </summary>
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public CustomerSessionComponentsPaymentElementFeatures Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/CustomerSessions/CustomerSessionComponentsPaymentElementFeatures.cs b/src/Stripe.net/Entities/CustomerSessions/CustomerSessionComponentsPaymentElementFeatures.cs
index c860bb944f..6368e3ad9c 100644
--- a/src/Stripe.net/Entities/CustomerSessions/CustomerSessionComponentsPaymentElementFeatures.cs
+++ b/src/Stripe.net/Entities/CustomerSessions/CustomerSessionComponentsPaymentElementFeatures.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerSessionComponentsPaymentElementFeatures : StripeEntity<CustomerSessionComponentsPaymentElementFeatures>
     {
@@ -18,6 +21,9 @@ public class CustomerSessionComponentsPaymentElementFeatures : StripeEntity<Cust
         /// One of: <c>always</c>, <c>limited</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("payment_method_allow_redisplay_filters")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_allow_redisplay_filters")]
+#endif
         public List<string> PaymentMethodAllowRedisplayFilters { get; set; }
 
         /// <summary>
@@ -26,6 +32,9 @@ public class CustomerSessionComponentsPaymentElementFeatures : StripeEntity<Cust
         /// One of: <c>disabled</c>, or <c>enabled</c>.
         /// </summary>
         [JsonProperty("payment_method_redisplay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_redisplay")]
+#endif
         public string PaymentMethodRedisplay { get; set; }
 
         /// <summary>
@@ -33,6 +42,9 @@ public class CustomerSessionComponentsPaymentElementFeatures : StripeEntity<Cust
         /// This parameter defaults to <c>3</c>.
         /// </summary>
         [JsonProperty("payment_method_redisplay_limit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_redisplay_limit")]
+#endif
         public long? PaymentMethodRedisplayLimit { get; set; }
 
         /// <summary>
@@ -47,6 +59,9 @@ public class CustomerSessionComponentsPaymentElementFeatures : StripeEntity<Cust
         /// One of: <c>disabled</c>, or <c>enabled</c>.
         /// </summary>
         [JsonProperty("payment_method_remove")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_remove")]
+#endif
         public string PaymentMethodRemove { get; set; }
 
         /// <summary>
@@ -62,6 +77,9 @@ public class CustomerSessionComponentsPaymentElementFeatures : StripeEntity<Cust
         /// One of: <c>disabled</c>, or <c>enabled</c>.
         /// </summary>
         [JsonProperty("payment_method_save")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_save")]
+#endif
         public string PaymentMethodSave { get; set; }
 
         /// <summary>
@@ -76,6 +94,9 @@ public class CustomerSessionComponentsPaymentElementFeatures : StripeEntity<Cust
         /// One of: <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("payment_method_save_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_save_usage")]
+#endif
         public string PaymentMethodSaveUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/CustomerSessions/CustomerSessionComponentsPricingTable.cs b/src/Stripe.net/Entities/CustomerSessions/CustomerSessionComponentsPricingTable.cs
index 7ec8b017ac..c08a87682f 100644
--- a/src/Stripe.net/Entities/CustomerSessions/CustomerSessionComponentsPricingTable.cs
+++ b/src/Stripe.net/Entities/CustomerSessions/CustomerSessionComponentsPricingTable.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerSessionComponentsPricingTable : StripeEntity<CustomerSessionComponentsPricingTable>
     {
@@ -9,6 +12,9 @@ public class CustomerSessionComponentsPricingTable : StripeEntity<CustomerSessio
         /// Whether the pricing table is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Customers/Customer.cs b/src/Stripe.net/Entities/Customers/Customer.cs
index 18eec55004..67c9fda97c 100644
--- a/src/Stripe.net/Entities/Customers/Customer.cs
+++ b/src/Stripe.net/Entities/Customers/Customer.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// This object represents a customer of your business. Use it to <a
@@ -12,24 +15,36 @@ namespace Stripe
     /// href="https://stripe.com/docs/payments/save-during-payment">save payment</a> and contact
     /// information, and track payments that belong to the same customer.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class Customer : StripeEntity<Customer>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// The customer's address.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public Address Address { get; set; }
 
         /// <summary>
@@ -40,6 +55,9 @@ public class Customer : StripeEntity<Customer>, IHasId, IHasMetadata, IHasObject
         /// balance is only taken into account after invoices finalize.
         /// </summary>
         [JsonProperty("balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("balance")]
+#endif
         public long Balance { get; set; }
 
         /// <summary>
@@ -49,6 +67,9 @@ public class Customer : StripeEntity<Customer>, IHasId, IHasMetadata, IHasObject
         /// payment intents manually or automatically.
         /// </summary>
         [JsonProperty("cash_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cash_balance")]
+#endif
         public CashBalance CashBalance { get; set; }
 
         /// <summary>
@@ -56,6 +77,10 @@ public class Customer : StripeEntity<Customer>, IHasId, IHasMetadata, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -63,6 +88,9 @@ public class Customer : StripeEntity<Customer>, IHasId, IHasMetadata, IHasObject
         /// the customer can be charged in for recurring billing purposes.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         #region Expandable DefaultSource
@@ -76,6 +104,9 @@ public class Customer : StripeEntity<Customer>, IHasId, IHasMetadata, IHasObject
         /// field instead.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DefaultSourceId
         {
             get => this.InternalDefaultSource?.Id;
@@ -93,6 +124,9 @@ public string DefaultSourceId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public IPaymentSource DefaultSource
         {
             get => this.InternalDefaultSource?.ExpandedObject;
@@ -101,6 +135,10 @@ public IPaymentSource DefaultSource
 
         [JsonProperty("default_source")]
         [JsonConverter(typeof(ExpandableFieldConverter<IPaymentSource>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_source")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<IPaymentSource>))]
+#endif
         internal ExpandableField<IPaymentSource> InternalDefaultSource { get; set; }
         #endregion
 
@@ -108,6 +146,10 @@ public IPaymentSource DefaultSource
         /// Whether this object is deleted or not.
         /// </summary>
         [JsonProperty("deleted", NullValueHandling = NullValueHandling.Ignore)]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+        [STJS.JsonIgnore(Condition = STJS.JsonIgnoreCondition.WhenWritingNull)]
+#endif
         public bool? Deleted { get; set; }
 
         /// <summary>
@@ -126,24 +168,36 @@ public IPaymentSource DefaultSource
         /// field to <c>false</c>.
         /// </summary>
         [JsonProperty("delinquent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("delinquent")]
+#endif
         public bool? Delinquent { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// Describes the current discount active on the customer, if there is one.
         /// </summary>
         [JsonProperty("discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+#endif
         public Discount Discount { get; set; }
 
         /// <summary>
         /// The customer's email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
@@ -156,15 +210,24 @@ public IPaymentSource DefaultSource
         /// in the same currency) finalizes.
         /// </summary>
         [JsonProperty("invoice_credit_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_credit_balance")]
+#endif
         public Dictionary<string, long> InvoiceCreditBalance { get; set; }
 
         /// <summary>
         /// The prefix for the customer used to generate unique invoice numbers.
         /// </summary>
         [JsonProperty("invoice_prefix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_prefix")]
+#endif
         public string InvoicePrefix { get; set; }
 
         [JsonProperty("invoice_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_settings")]
+#endif
         public CustomerInvoiceSettings InvoiceSettings { get; set; }
 
         /// <summary>
@@ -172,6 +235,9 @@ public IPaymentSource DefaultSource
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -180,12 +246,18 @@ public IPaymentSource DefaultSource
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The customer's full name or business name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -194,18 +266,27 @@ public IPaymentSource DefaultSource
         /// omitted in API responses.
         /// </summary>
         [JsonProperty("next_invoice_sequence")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("next_invoice_sequence")]
+#endif
         public long NextInvoiceSequence { get; set; }
 
         /// <summary>
         /// The customer's phone number.
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
 
         /// <summary>
         /// The customer's preferred locales (languages), ordered by preference.
         /// </summary>
         [JsonProperty("preferred_locales")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_locales")]
+#endif
         public List<string> PreferredLocales { get; set; }
 
         /// <summary>
@@ -213,21 +294,33 @@ public IPaymentSource DefaultSource
         /// customer.
         /// </summary>
         [JsonProperty("shipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping")]
+#endif
         public Shipping Shipping { get; set; }
 
         /// <summary>
         /// The customer's payment sources, if any.
         /// </summary>
         [JsonProperty("sources")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sources")]
+#endif
         public StripeList<IPaymentSource> Sources { get; set; }
 
         /// <summary>
         /// The customer's current subscriptions, if any.
         /// </summary>
         [JsonProperty("subscriptions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscriptions")]
+#endif
         public StripeList<Subscription> Subscriptions { get; set; }
 
         [JsonProperty("tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax")]
+#endif
         public CustomerTax Tax { get; set; }
 
         /// <summary>
@@ -237,12 +330,18 @@ public IPaymentSource DefaultSource
         /// One of: <c>exempt</c>, <c>none</c>, or <c>reverse</c>.
         /// </summary>
         [JsonProperty("tax_exempt")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_exempt")]
+#endif
         public string TaxExempt { get; set; }
 
         /// <summary>
         /// The customer's tax IDs.
         /// </summary>
         [JsonProperty("tax_ids")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_ids")]
+#endif
         public StripeList<TaxId> TaxIds { get; set; }
 
         #region Expandable TestClock
@@ -252,6 +351,9 @@ public IPaymentSource DefaultSource
         /// ID of the test clock that this customer belongs to.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string TestClockId
         {
             get => this.InternalTestClock?.Id;
@@ -265,6 +367,9 @@ public string TestClockId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public TestHelpers.TestClock TestClock
         {
             get => this.InternalTestClock?.ExpandedObject;
@@ -273,6 +378,10 @@ public TestHelpers.TestClock TestClock
 
         [JsonProperty("test_clock")]
         [JsonConverter(typeof(ExpandableFieldConverter<TestHelpers.TestClock>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("test_clock")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<TestHelpers.TestClock>))]
+#endif
         internal ExpandableField<TestHelpers.TestClock> InternalTestClock { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Customers/CustomerInvoiceSettings.cs b/src/Stripe.net/Entities/Customers/CustomerInvoiceSettings.cs
index c8088a56fc..6bd8deacae 100644
--- a/src/Stripe.net/Entities/Customers/CustomerInvoiceSettings.cs
+++ b/src/Stripe.net/Entities/Customers/CustomerInvoiceSettings.cs
@@ -4,13 +4,22 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class CustomerInvoiceSettings : StripeEntity<CustomerInvoiceSettings>
     {
         /// <summary>
         /// Default custom fields to be displayed on invoices for this customer.
         /// </summary>
         [JsonProperty("custom_fields")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_fields")]
+#endif
         public List<CustomerInvoiceSettingsCustomField> CustomFields { get; set; }
 
         #region Expandable DefaultPaymentMethod
@@ -21,6 +30,9 @@ public class CustomerInvoiceSettings : StripeEntity<CustomerInvoiceSettings>
         /// default payment method for subscriptions and invoices.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DefaultPaymentMethodId
         {
             get => this.InternalDefaultPaymentMethod?.Id;
@@ -35,6 +47,9 @@ public string DefaultPaymentMethodId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PaymentMethod DefaultPaymentMethod
         {
             get => this.InternalDefaultPaymentMethod?.ExpandedObject;
@@ -43,6 +58,10 @@ public PaymentMethod DefaultPaymentMethod
 
         [JsonProperty("default_payment_method")]
         [JsonConverter(typeof(ExpandableFieldConverter<PaymentMethod>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_payment_method")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PaymentMethod>))]
+#endif
         internal ExpandableField<PaymentMethod> InternalDefaultPaymentMethod { get; set; }
         #endregion
 
@@ -50,12 +69,18 @@ public PaymentMethod DefaultPaymentMethod
         /// Default footer to be displayed on invoices for this customer.
         /// </summary>
         [JsonProperty("footer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("footer")]
+#endif
         public string Footer { get; set; }
 
         /// <summary>
         /// Default options for invoice PDF rendering for this customer.
         /// </summary>
         [JsonProperty("rendering_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("rendering_options")]
+#endif
         public CustomerInvoiceSettingsRenderingOptions RenderingOptions { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Customers/CustomerInvoiceSettingsCustomField.cs b/src/Stripe.net/Entities/Customers/CustomerInvoiceSettingsCustomField.cs
index cbb80f457f..1b29d6d192 100644
--- a/src/Stripe.net/Entities/Customers/CustomerInvoiceSettingsCustomField.cs
+++ b/src/Stripe.net/Entities/Customers/CustomerInvoiceSettingsCustomField.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerInvoiceSettingsCustomField : StripeEntity<CustomerInvoiceSettingsCustomField>
     {
@@ -9,12 +12,18 @@ public class CustomerInvoiceSettingsCustomField : StripeEntity<CustomerInvoiceSe
         /// The name of the custom field.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// The value of the custom field.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Customers/CustomerInvoiceSettingsRenderingOptions.cs b/src/Stripe.net/Entities/Customers/CustomerInvoiceSettingsRenderingOptions.cs
index 87a9a42483..aa126e2bcd 100644
--- a/src/Stripe.net/Entities/Customers/CustomerInvoiceSettingsRenderingOptions.cs
+++ b/src/Stripe.net/Entities/Customers/CustomerInvoiceSettingsRenderingOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerInvoiceSettingsRenderingOptions : StripeEntity<CustomerInvoiceSettingsRenderingOptions>
     {
@@ -9,6 +12,9 @@ public class CustomerInvoiceSettingsRenderingOptions : StripeEntity<CustomerInvo
         /// How line-item prices and amounts will be displayed with respect to tax on invoice PDFs.
         /// </summary>
         [JsonProperty("amount_tax_display")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_tax_display")]
+#endif
         public string AmountTaxDisplay { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class CustomerInvoiceSettingsRenderingOptions : StripeEntity<CustomerInvo
         /// directly on the invoice.
         /// </summary>
         [JsonProperty("template")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("template")]
+#endif
         public string Template { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Customers/CustomerTax.cs b/src/Stripe.net/Entities/Customers/CustomerTax.cs
index 135fe61a4c..af1c2d8073 100644
--- a/src/Stripe.net/Entities/Customers/CustomerTax.cs
+++ b/src/Stripe.net/Entities/Customers/CustomerTax.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerTax : StripeEntity<CustomerTax>
     {
@@ -12,18 +15,27 @@ public class CustomerTax : StripeEntity<CustomerTax>
         /// <c>unrecognized_location</c>.
         /// </summary>
         [JsonProperty("automatic_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatic_tax")]
+#endif
         public string AutomaticTax { get; set; }
 
         /// <summary>
         /// A recent IP address of the customer used for tax reporting and tax location inference.
         /// </summary>
         [JsonProperty("ip_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip_address")]
+#endif
         public string IpAddress { get; set; }
 
         /// <summary>
         /// The customer's location as identified by Stripe Tax.
         /// </summary>
         [JsonProperty("location")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("location")]
+#endif
         public CustomerTaxLocation Location { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Customers/CustomerTaxLocation.cs b/src/Stripe.net/Entities/Customers/CustomerTaxLocation.cs
index 108585c35c..d181d3ed15 100644
--- a/src/Stripe.net/Entities/Customers/CustomerTaxLocation.cs
+++ b/src/Stripe.net/Entities/Customers/CustomerTaxLocation.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerTaxLocation : StripeEntity<CustomerTaxLocation>
     {
@@ -9,6 +12,9 @@ public class CustomerTaxLocation : StripeEntity<CustomerTaxLocation>
         /// The customer's country as identified by Stripe Tax.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -17,12 +23,18 @@ public class CustomerTaxLocation : StripeEntity<CustomerTaxLocation>
         /// <c>shipping_destination</c>.
         /// </summary>
         [JsonProperty("source")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source")]
+#endif
         public string Source { get; set; }
 
         /// <summary>
         /// The customer's state, county, province, or region as identified by Stripe Tax.
         /// </summary>
         [JsonProperty("state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("state")]
+#endif
         public string State { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Discounts/Discount.cs b/src/Stripe.net/Entities/Discounts/Discount.cs
index 64fea7e110..1644d02ac0 100644
--- a/src/Stripe.net/Entities/Discounts/Discount.cs
+++ b/src/Stripe.net/Entities/Discounts/Discount.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A discount represents the actual application of a <a
@@ -15,6 +18,9 @@ namespace Stripe
     /// href="https://stripe.com/docs/billing/subscriptions/discounts">Applying discounts to
     /// subscriptions</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class Discount : StripeEntity<Discount>, IHasId, IHasObject
     {
         /// <summary>
@@ -22,12 +28,18 @@ public class Discount : StripeEntity<Discount>, IHasId, IHasObject
         /// <c>expand[]=discounts</c> in API calls to expand discount IDs in an array.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -35,6 +47,9 @@ public class Discount : StripeEntity<Discount>, IHasId, IHasObject
         /// session in payment mode. Will not be present for subscription mode.
         /// </summary>
         [JsonProperty("checkout_session")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("checkout_session")]
+#endif
         public string CheckoutSession { get; set; }
 
         /// <summary>
@@ -48,6 +63,9 @@ public class Discount : StripeEntity<Discount>, IHasId, IHasObject
         /// <a href="https://stripe.com/docs/api/payment_intents">payment intents</a>.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public Coupon Coupon { get; set; }
 
         #region Expandable Customer
@@ -57,6 +75,9 @@ public class Discount : StripeEntity<Discount>, IHasId, IHasObject
         /// The ID of the customer associated with this discount.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerId
         {
             get => this.InternalCustomer?.Id;
@@ -70,6 +91,9 @@ public string CustomerId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Customer Customer
         {
             get => this.InternalCustomer?.ExpandedObject;
@@ -78,6 +102,10 @@ public Customer Customer
 
         [JsonProperty("customer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Customer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Customer>))]
+#endif
         internal ExpandableField<Customer> InternalCustomer { get; set; }
         #endregion
 
@@ -85,6 +113,10 @@ public Customer Customer
         /// Whether this object is deleted or not.
         /// </summary>
         [JsonProperty("deleted", NullValueHandling = NullValueHandling.Ignore)]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+        [STJS.JsonIgnore(Condition = STJS.JsonIgnoreCondition.WhenWritingNull)]
+#endif
         public bool? Deleted { get; set; }
 
         /// <summary>
@@ -94,6 +126,10 @@ public Customer Customer
         /// </summary>
         [JsonProperty("end")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? End { get; set; }
 
         /// <summary>
@@ -101,6 +137,9 @@ public Customer Customer
         /// particular invoice.
         /// </summary>
         [JsonProperty("invoice")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice")]
+#endif
         public string Invoice { get; set; }
 
         /// <summary>
@@ -109,6 +148,9 @@ public Customer Customer
         /// directly to a particular invoice item or invoice line item.
         /// </summary>
         [JsonProperty("invoice_item")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_item")]
+#endif
         public string InvoiceItem { get; set; }
 
         #region Expandable PromotionCode
@@ -118,6 +160,9 @@ public Customer Customer
         /// The promotion code applied to create this discount.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string PromotionCodeId
         {
             get => this.InternalPromotionCode?.Id;
@@ -131,6 +176,9 @@ public string PromotionCodeId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PromotionCode PromotionCode
         {
             get => this.InternalPromotionCode?.ExpandedObject;
@@ -139,6 +187,10 @@ public PromotionCode PromotionCode
 
         [JsonProperty("promotion_code")]
         [JsonConverter(typeof(ExpandableFieldConverter<PromotionCode>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotion_code")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PromotionCode>))]
+#endif
         internal ExpandableField<PromotionCode> InternalPromotionCode { get; set; }
         #endregion
 
@@ -147,6 +199,10 @@ public PromotionCode PromotionCode
         /// </summary>
         [JsonProperty("start")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("start")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Start { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -154,6 +210,9 @@ public PromotionCode PromotionCode
         /// subscription.
         /// </summary>
         [JsonProperty("subscription")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription")]
+#endif
         public string Subscription { get; set; }
 
         /// <summary>
@@ -161,6 +220,9 @@ public PromotionCode PromotionCode
         /// subscription item.
         /// </summary>
         [JsonProperty("subscription_item")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_item")]
+#endif
         public string SubscriptionItem { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Disputes/Dispute.cs b/src/Stripe.net/Entities/Disputes/Dispute.cs
index 24735c78c4..7d025a3db0 100644
--- a/src/Stripe.net/Entities/Disputes/Dispute.cs
+++ b/src/Stripe.net/Entities/Disputes/Dispute.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A dispute occurs when a customer questions your charge with their card issuer. When this
@@ -13,18 +16,27 @@ namespace Stripe
     ///
     /// Related guide: <a href="https://stripe.com/docs/disputes">Disputes and fraud</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class Dispute : StripeEntity<Dispute>, IHasId, IHasMetadata, IHasObject, IBalanceTransactionSource
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -32,6 +44,9 @@ public class Dispute : StripeEntity<Dispute>, IHasId, IHasMetadata, IHasObject,
         /// currency fluctuation or because only part of the order is disputed).
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -39,6 +54,9 @@ public class Dispute : StripeEntity<Dispute>, IHasId, IHasMetadata, IHasObject,
         /// to your Stripe account as a result of this dispute.
         /// </summary>
         [JsonProperty("balance_transactions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("balance_transactions")]
+#endif
         public List<BalanceTransaction> BalanceTransactions { get; set; }
 
         #region Expandable Charge
@@ -48,6 +66,9 @@ public class Dispute : StripeEntity<Dispute>, IHasId, IHasMetadata, IHasObject,
         /// ID of the charge that's disputed.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ChargeId
         {
             get => this.InternalCharge?.Id;
@@ -61,6 +82,9 @@ public string ChargeId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Charge Charge
         {
             get => this.InternalCharge?.ExpandedObject;
@@ -69,6 +93,10 @@ public Charge Charge
 
         [JsonProperty("charge")]
         [JsonConverter(typeof(ExpandableFieldConverter<Charge>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("charge")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Charge>))]
+#endif
         internal ExpandableField<Charge> InternalCharge { get; set; }
         #endregion
 
@@ -77,6 +105,10 @@ public Charge Charge
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -85,18 +117,30 @@ public Charge Charge
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// List of eligibility types that are included in <c>enhanced_evidence</c>.
         /// </summary>
         [JsonProperty("enhanced_eligibility_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enhanced_eligibility_types")]
+#endif
         public List<string> EnhancedEligibilityTypes { get; set; }
 
         [JsonProperty("evidence")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("evidence")]
+#endif
         public DisputeEvidence Evidence { get; set; }
 
         [JsonProperty("evidence_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("evidence_details")]
+#endif
         public DisputeEvidenceDetails EvidenceDetails { get; set; }
 
         /// <summary>
@@ -105,6 +149,9 @@ public Charge Charge
         /// this dispute.
         /// </summary>
         [JsonProperty("is_charge_refundable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("is_charge_refundable")]
+#endif
         public bool IsChargeRefundable { get; set; }
 
         /// <summary>
@@ -112,6 +159,9 @@ public Charge Charge
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -120,12 +170,18 @@ public Charge Charge
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Network-dependent reason code for the dispute.
         /// </summary>
         [JsonProperty("network_reason_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network_reason_code")]
+#endif
         public string NetworkReasonCode { get; set; }
 
         #region Expandable PaymentIntent
@@ -135,6 +191,9 @@ public Charge Charge
         /// ID of the PaymentIntent that's disputed.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string PaymentIntentId
         {
             get => this.InternalPaymentIntent?.Id;
@@ -148,6 +207,9 @@ public string PaymentIntentId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PaymentIntent PaymentIntent
         {
             get => this.InternalPaymentIntent?.ExpandedObject;
@@ -156,10 +218,17 @@ public PaymentIntent PaymentIntent
 
         [JsonProperty("payment_intent")]
         [JsonConverter(typeof(ExpandableFieldConverter<PaymentIntent>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_intent")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PaymentIntent>))]
+#endif
         internal ExpandableField<PaymentIntent> InternalPaymentIntent { get; set; }
         #endregion
 
         [JsonProperty("payment_method_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_details")]
+#endif
         public DisputePaymentMethodDetails PaymentMethodDetails { get; set; }
 
         /// <summary>
@@ -172,6 +241,9 @@ public PaymentIntent PaymentIntent
         /// href="https://stripe.com/docs/disputes/categories">dispute reasons</a>.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
 
         /// <summary>
@@ -182,6 +254,9 @@ public PaymentIntent PaymentIntent
         /// <c>warning_needs_response</c>, <c>warning_under_review</c>, or <c>won</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Disputes/DisputeEvidence.cs b/src/Stripe.net/Entities/Disputes/DisputeEvidence.cs
index 4905e95649..ca5dbdf7eb 100644
--- a/src/Stripe.net/Entities/Disputes/DisputeEvidence.cs
+++ b/src/Stripe.net/Entities/Disputes/DisputeEvidence.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class DisputeEvidence : StripeEntity<DisputeEvidence>
     {
         /// <summary>
@@ -12,12 +18,18 @@ public class DisputeEvidence : StripeEntity<DisputeEvidence>
         /// timestamps, and any detailed recorded activity.
         /// </summary>
         [JsonProperty("access_activity_log")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("access_activity_log")]
+#endif
         public string AccessActivityLog { get; set; }
 
         /// <summary>
         /// The billing address provided by the customer.
         /// </summary>
         [JsonProperty("billing_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_address")]
+#endif
         public string BillingAddress { get; set; }
 
         #region Expandable CancellationPolicy
@@ -28,6 +40,9 @@ public class DisputeEvidence : StripeEntity<DisputeEvidence>
         /// subscription cancellation policy, as shown to the customer.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CancellationPolicyId
         {
             get => this.InternalCancellationPolicy?.Id;
@@ -42,6 +57,9 @@ public string CancellationPolicyId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File CancellationPolicy
         {
             get => this.InternalCancellationPolicy?.ExpandedObject;
@@ -50,6 +68,10 @@ public File CancellationPolicy
 
         [JsonProperty("cancellation_policy")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancellation_policy")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalCancellationPolicy { get; set; }
         #endregion
 
@@ -58,12 +80,18 @@ public File CancellationPolicy
         /// purchase.
         /// </summary>
         [JsonProperty("cancellation_policy_disclosure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancellation_policy_disclosure")]
+#endif
         public string CancellationPolicyDisclosure { get; set; }
 
         /// <summary>
         /// A justification for why the customer's subscription was not canceled.
         /// </summary>
         [JsonProperty("cancellation_rebuttal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancellation_rebuttal")]
+#endif
         public string CancellationRebuttal { get; set; }
 
         #region Expandable CustomerCommunication
@@ -76,6 +104,9 @@ public File CancellationPolicy
         /// use of or satisfaction with the product or service.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerCommunicationId
         {
             get => this.InternalCustomerCommunication?.Id;
@@ -92,6 +123,9 @@ public string CustomerCommunicationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File CustomerCommunication
         {
             get => this.InternalCustomerCommunication?.ExpandedObject;
@@ -100,6 +134,10 @@ public File CustomerCommunication
 
         [JsonProperty("customer_communication")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_communication")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalCustomerCommunication { get; set; }
         #endregion
 
@@ -107,18 +145,27 @@ public File CustomerCommunication
         /// The email address of the customer.
         /// </summary>
         [JsonProperty("customer_email_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_email_address")]
+#endif
         public string CustomerEmailAddress { get; set; }
 
         /// <summary>
         /// The name of the customer.
         /// </summary>
         [JsonProperty("customer_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_name")]
+#endif
         public string CustomerName { get; set; }
 
         /// <summary>
         /// The IP address that the customer used when making the purchase.
         /// </summary>
         [JsonProperty("customer_purchase_ip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_purchase_ip")]
+#endif
         public string CustomerPurchaseIp { get; set; }
 
         #region Expandable CustomerSignature
@@ -129,6 +176,9 @@ public File CustomerCommunication
         /// relevant document or contract showing the customer's signature.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerSignatureId
         {
             get => this.InternalCustomerSignature?.Id;
@@ -143,6 +193,9 @@ public string CustomerSignatureId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File CustomerSignature
         {
             get => this.InternalCustomerSignature?.ExpandedObject;
@@ -151,6 +204,10 @@ public File CustomerSignature
 
         [JsonProperty("customer_signature")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_signature")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalCustomerSignature { get; set; }
         #endregion
 
@@ -164,6 +221,9 @@ public File CustomerSignature
         /// document from the disputed payment that proves the two payments are separate.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DuplicateChargeDocumentationId
         {
             get => this.InternalDuplicateChargeDocumentation?.Id;
@@ -180,6 +240,9 @@ public string DuplicateChargeDocumentationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File DuplicateChargeDocumentation
         {
             get => this.InternalDuplicateChargeDocumentation?.ExpandedObject;
@@ -188,6 +251,10 @@ public File DuplicateChargeDocumentation
 
         [JsonProperty("duplicate_charge_documentation")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("duplicate_charge_documentation")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalDuplicateChargeDocumentation { get; set; }
         #endregion
 
@@ -196,6 +263,9 @@ public File DuplicateChargeDocumentation
         /// that appears to be a duplicate.
         /// </summary>
         [JsonProperty("duplicate_charge_explanation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("duplicate_charge_explanation")]
+#endif
         public string DuplicateChargeExplanation { get; set; }
 
         /// <summary>
@@ -203,15 +273,24 @@ public File DuplicateChargeDocumentation
         /// charge.
         /// </summary>
         [JsonProperty("duplicate_charge_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("duplicate_charge_id")]
+#endif
         public string DuplicateChargeId { get; set; }
 
         [JsonProperty("enhanced_evidence")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enhanced_evidence")]
+#endif
         public DisputeEvidenceEnhancedEvidence EnhancedEvidence { get; set; }
 
         /// <summary>
         /// A description of the product or service that was sold.
         /// </summary>
         [JsonProperty("product_description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_description")]
+#endif
         public string ProductDescription { get; set; }
 
         #region Expandable Receipt
@@ -222,6 +301,9 @@ public File DuplicateChargeDocumentation
         /// receipt or message sent to the customer notifying them of the charge.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ReceiptId
         {
             get => this.InternalReceipt?.Id;
@@ -236,6 +318,9 @@ public string ReceiptId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File Receipt
         {
             get => this.InternalReceipt?.ExpandedObject;
@@ -244,6 +329,10 @@ public File Receipt
 
         [JsonProperty("receipt")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("receipt")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalReceipt { get; set; }
         #endregion
 
@@ -255,6 +344,9 @@ public File Receipt
         /// refund policy, as shown to the customer.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string RefundPolicyId
         {
             get => this.InternalRefundPolicy?.Id;
@@ -269,6 +361,9 @@ public string RefundPolicyId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File RefundPolicy
         {
             get => this.InternalRefundPolicy?.ExpandedObject;
@@ -277,6 +372,10 @@ public File RefundPolicy
 
         [JsonProperty("refund_policy")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_policy")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalRefundPolicy { get; set; }
         #endregion
 
@@ -285,12 +384,18 @@ public File RefundPolicy
         /// purchase.
         /// </summary>
         [JsonProperty("refund_policy_disclosure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_policy_disclosure")]
+#endif
         public string RefundPolicyDisclosure { get; set; }
 
         /// <summary>
         /// A justification for why the customer is not entitled to a refund.
         /// </summary>
         [JsonProperty("refund_refusal_explanation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_refusal_explanation")]
+#endif
         public string RefundRefusalExplanation { get; set; }
 
         /// <summary>
@@ -298,6 +403,9 @@ public File RefundPolicy
         /// clear human-readable format.
         /// </summary>
         [JsonProperty("service_date")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("service_date")]
+#endif
         public string ServiceDate { get; set; }
 
         #region Expandable ServiceDocumentation
@@ -309,6 +417,9 @@ public File RefundPolicy
         /// include a copy of a signed contract, work order, or other form of written agreement.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ServiceDocumentationId
         {
             get => this.InternalServiceDocumentation?.Id;
@@ -324,6 +435,9 @@ public string ServiceDocumentationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File ServiceDocumentation
         {
             get => this.InternalServiceDocumentation?.ExpandedObject;
@@ -332,6 +446,10 @@ public File ServiceDocumentation
 
         [JsonProperty("service_documentation")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("service_documentation")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalServiceDocumentation { get; set; }
         #endregion
 
@@ -340,6 +458,9 @@ public File ServiceDocumentation
         /// complete address information as possible.
         /// </summary>
         [JsonProperty("shipping_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_address")]
+#endif
         public string ShippingAddress { get; set; }
 
         /// <summary>
@@ -347,6 +468,9 @@ public File ServiceDocumentation
         /// multiple carriers were used for this purchase, please separate them with commas.
         /// </summary>
         [JsonProperty("shipping_carrier")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_carrier")]
+#endif
         public string ShippingCarrier { get; set; }
 
         /// <summary>
@@ -354,6 +478,9 @@ public File ServiceDocumentation
         /// human-readable format.
         /// </summary>
         [JsonProperty("shipping_date")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_date")]
+#endif
         public string ShippingDate { get; set; }
 
         #region Expandable ShippingDocumentation
@@ -366,6 +493,9 @@ public File ServiceDocumentation
         /// shipping label, etc. It should show the customer's full shipping address, if possible.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ShippingDocumentationId
         {
             get => this.InternalShippingDocumentation?.Id;
@@ -382,6 +512,9 @@ public string ShippingDocumentationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File ShippingDocumentation
         {
             get => this.InternalShippingDocumentation?.ExpandedObject;
@@ -390,6 +523,10 @@ public File ShippingDocumentation
 
         [JsonProperty("shipping_documentation")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_documentation")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalShippingDocumentation { get; set; }
         #endregion
 
@@ -399,6 +536,9 @@ public File ShippingDocumentation
         /// commas.
         /// </summary>
         [JsonProperty("shipping_tracking_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_tracking_number")]
+#endif
         public string ShippingTrackingNumber { get; set; }
 
         #region Expandable UncategorizedFile
@@ -409,6 +549,9 @@ public File ShippingDocumentation
         /// additional evidence or statements.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string UncategorizedFileId
         {
             get => this.InternalUncategorizedFile?.Id;
@@ -423,6 +566,9 @@ public string UncategorizedFileId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File UncategorizedFile
         {
             get => this.InternalUncategorizedFile?.ExpandedObject;
@@ -431,6 +577,10 @@ public File UncategorizedFile
 
         [JsonProperty("uncategorized_file")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("uncategorized_file")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalUncategorizedFile { get; set; }
         #endregion
 
@@ -438,6 +588,9 @@ public File UncategorizedFile
         /// Any additional evidence or statements.
         /// </summary>
         [JsonProperty("uncategorized_text")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("uncategorized_text")]
+#endif
         public string UncategorizedText { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Disputes/DisputeEvidenceDetails.cs b/src/Stripe.net/Entities/Disputes/DisputeEvidenceDetails.cs
index bbb4af4bb5..17fd76f96c 100644
--- a/src/Stripe.net/Entities/Disputes/DisputeEvidenceDetails.cs
+++ b/src/Stripe.net/Entities/Disputes/DisputeEvidenceDetails.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeEvidenceDetails : StripeEntity<DisputeEvidenceDetails>
     {
@@ -14,15 +17,25 @@ public class DisputeEvidenceDetails : StripeEntity<DisputeEvidenceDetails>
         /// </summary>
         [JsonProperty("due_by")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("due_by")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? DueBy { get; set; }
 
         [JsonProperty("enhanced_eligibility")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enhanced_eligibility")]
+#endif
         public DisputeEvidenceDetailsEnhancedEligibility EnhancedEligibility { get; set; }
 
         /// <summary>
         /// Whether evidence has been staged for this dispute.
         /// </summary>
         [JsonProperty("has_evidence")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("has_evidence")]
+#endif
         public bool HasEvidence { get; set; }
 
         /// <summary>
@@ -31,6 +44,9 @@ public class DisputeEvidenceDetails : StripeEntity<DisputeEvidenceDetails>
         /// the latest evidence is <em>not</em> guaranteed.
         /// </summary>
         [JsonProperty("past_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("past_due")]
+#endif
         public bool PastDue { get; set; }
 
         /// <summary>
@@ -38,6 +54,9 @@ public class DisputeEvidenceDetails : StripeEntity<DisputeEvidenceDetails>
         /// once.
         /// </summary>
         [JsonProperty("submission_count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("submission_count")]
+#endif
         public long SubmissionCount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Disputes/DisputeEvidenceDetailsEnhancedEligibility.cs b/src/Stripe.net/Entities/Disputes/DisputeEvidenceDetailsEnhancedEligibility.cs
index 8fa9ca20d6..ec59bd4b4a 100644
--- a/src/Stripe.net/Entities/Disputes/DisputeEvidenceDetailsEnhancedEligibility.cs
+++ b/src/Stripe.net/Entities/Disputes/DisputeEvidenceDetailsEnhancedEligibility.cs
@@ -2,13 +2,22 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeEvidenceDetailsEnhancedEligibility : StripeEntity<DisputeEvidenceDetailsEnhancedEligibility>
     {
         [JsonProperty("visa_compelling_evidence_3")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("visa_compelling_evidence_3")]
+#endif
         public DisputeEvidenceDetailsEnhancedEligibilityVisaCompellingEvidence3 VisaCompellingEvidence3 { get; set; }
 
         [JsonProperty("visa_compliance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("visa_compliance")]
+#endif
         public DisputeEvidenceDetailsEnhancedEligibilityVisaCompliance VisaCompliance { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Disputes/DisputeEvidenceDetailsEnhancedEligibilityVisaCompellingEvidence3.cs b/src/Stripe.net/Entities/Disputes/DisputeEvidenceDetailsEnhancedEligibilityVisaCompellingEvidence3.cs
index 4a24211d32..e745535829 100644
--- a/src/Stripe.net/Entities/Disputes/DisputeEvidenceDetailsEnhancedEligibilityVisaCompellingEvidence3.cs
+++ b/src/Stripe.net/Entities/Disputes/DisputeEvidenceDetailsEnhancedEligibilityVisaCompellingEvidence3.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeEvidenceDetailsEnhancedEligibilityVisaCompellingEvidence3 : StripeEntity<DisputeEvidenceDetailsEnhancedEligibilityVisaCompellingEvidence3>
     {
@@ -15,6 +18,9 @@ public class DisputeEvidenceDetailsEnhancedEligibilityVisaCompellingEvidence3 :
         /// <c>missing_prior_undisputed_transactions</c>.
         /// </summary>
         [JsonProperty("required_actions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("required_actions")]
+#endif
         public List<string> RequiredActions { get; set; }
 
         /// <summary>
@@ -22,6 +28,9 @@ public class DisputeEvidenceDetailsEnhancedEligibilityVisaCompellingEvidence3 :
         /// One of: <c>not_qualified</c>, <c>qualified</c>, or <c>requires_action</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Disputes/DisputeEvidenceDetailsEnhancedEligibilityVisaCompliance.cs b/src/Stripe.net/Entities/Disputes/DisputeEvidenceDetailsEnhancedEligibilityVisaCompliance.cs
index eb285c10b6..329e6d9d2e 100644
--- a/src/Stripe.net/Entities/Disputes/DisputeEvidenceDetailsEnhancedEligibilityVisaCompliance.cs
+++ b/src/Stripe.net/Entities/Disputes/DisputeEvidenceDetailsEnhancedEligibilityVisaCompliance.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeEvidenceDetailsEnhancedEligibilityVisaCompliance : StripeEntity<DisputeEvidenceDetailsEnhancedEligibilityVisaCompliance>
     {
@@ -10,6 +13,9 @@ public class DisputeEvidenceDetailsEnhancedEligibilityVisaCompliance : StripeEnt
         /// One of: <c>fee_acknowledged</c>, or <c>requires_fee_acknowledgement</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Disputes/DisputeEvidenceEnhancedEvidence.cs b/src/Stripe.net/Entities/Disputes/DisputeEvidenceEnhancedEvidence.cs
index 47519d3ae2..fb77a0179e 100644
--- a/src/Stripe.net/Entities/Disputes/DisputeEvidenceEnhancedEvidence.cs
+++ b/src/Stripe.net/Entities/Disputes/DisputeEvidenceEnhancedEvidence.cs
@@ -2,13 +2,22 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeEvidenceEnhancedEvidence : StripeEntity<DisputeEvidenceEnhancedEvidence>
     {
         [JsonProperty("visa_compelling_evidence_3")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("visa_compelling_evidence_3")]
+#endif
         public DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3 VisaCompellingEvidence3 { get; set; }
 
         [JsonProperty("visa_compliance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("visa_compliance")]
+#endif
         public DisputeEvidenceEnhancedEvidenceVisaCompliance VisaCompliance { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3.cs b/src/Stripe.net/Entities/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3.cs
index fc7e5e6de5..8a1a967e1d 100644
--- a/src/Stripe.net/Entities/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3.cs
+++ b/src/Stripe.net/Entities/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3 : StripeEntity<DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3>
     {
@@ -10,6 +13,9 @@ public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3 : StripeEnti
         /// Disputed transaction details for Visa Compelling Evidence 3.0 evidence submission.
         /// </summary>
         [JsonProperty("disputed_transaction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("disputed_transaction")]
+#endif
         public DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTransaction DisputedTransaction { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3 : StripeEnti
         /// 3.0 evidence submission.
         /// </summary>
         [JsonProperty("prior_undisputed_transactions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("prior_undisputed_transactions")]
+#endif
         public List<DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisputedTransaction> PriorUndisputedTransactions { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTransaction.cs b/src/Stripe.net/Entities/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTransaction.cs
index f9fba90085..1c9c856c0f 100644
--- a/src/Stripe.net/Entities/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTransaction.cs
+++ b/src/Stripe.net/Entities/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTransaction.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTransaction : StripeEntity<DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTransaction>
     {
@@ -9,6 +12,9 @@ public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTrans
         /// User Account ID used to log into business platform. Must be recognizable by the user.
         /// </summary>
         [JsonProperty("customer_account_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_account_id")]
+#endif
         public string CustomerAccountId { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTrans
         /// hardware and software attributes. Must be at least 20 characters.
         /// </summary>
         [JsonProperty("customer_device_fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_device_fingerprint")]
+#endif
         public string CustomerDeviceFingerprint { get; set; }
 
         /// <summary>
@@ -23,18 +32,27 @@ public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTrans
         /// International Mobile Equipment Identity [IMEI]). Must be at least 15 characters.
         /// </summary>
         [JsonProperty("customer_device_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_device_id")]
+#endif
         public string CustomerDeviceId { get; set; }
 
         /// <summary>
         /// The email address of the customer.
         /// </summary>
         [JsonProperty("customer_email_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_email_address")]
+#endif
         public string CustomerEmailAddress { get; set; }
 
         /// <summary>
         /// The IP address that the customer used when making the purchase.
         /// </summary>
         [JsonProperty("customer_purchase_ip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_purchase_ip")]
+#endif
         public string CustomerPurchaseIp { get; set; }
 
         /// <summary>
@@ -42,12 +60,18 @@ public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTrans
         /// One of: <c>merchandise</c>, or <c>services</c>.
         /// </summary>
         [JsonProperty("merchandise_or_services")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("merchandise_or_services")]
+#endif
         public string MerchandiseOrServices { get; set; }
 
         /// <summary>
         /// A description of the product or service that was sold.
         /// </summary>
         [JsonProperty("product_description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_description")]
+#endif
         public string ProductDescription { get; set; }
 
         /// <summary>
@@ -55,6 +79,9 @@ public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTrans
         /// Compelling Evidence 3.0 evidence submission.
         /// </summary>
         [JsonProperty("shipping_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_address")]
+#endif
         public DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTransactionShippingAddress ShippingAddress { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTransactionShippingAddress.cs b/src/Stripe.net/Entities/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTransactionShippingAddress.cs
index 96f922ac57..c4633f9962 100644
--- a/src/Stripe.net/Entities/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTransactionShippingAddress.cs
+++ b/src/Stripe.net/Entities/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTransactionShippingAddress.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTransactionShippingAddress : StripeEntity<DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTransactionShippingAddress>
     {
@@ -9,6 +12,9 @@ public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTrans
         /// City, district, suburb, town, or village.
         /// </summary>
         [JsonProperty("city")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("city")]
+#endif
         public string City { get; set; }
 
         /// <summary>
@@ -16,30 +22,45 @@ public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTrans
         /// 3166-1 alpha-2</a>).
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
         /// Address line 1 (e.g., street, PO Box, or company name).
         /// </summary>
         [JsonProperty("line1")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line1")]
+#endif
         public string Line1 { get; set; }
 
         /// <summary>
         /// Address line 2 (e.g., apartment, suite, unit, or building).
         /// </summary>
         [JsonProperty("line2")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line2")]
+#endif
         public string Line2 { get; set; }
 
         /// <summary>
         /// ZIP or postal code.
         /// </summary>
         [JsonProperty("postal_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("postal_code")]
+#endif
         public string PostalCode { get; set; }
 
         /// <summary>
         /// State, county, province, or region.
         /// </summary>
         [JsonProperty("state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("state")]
+#endif
         public string State { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisputedTransaction.cs b/src/Stripe.net/Entities/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisputedTransaction.cs
index 755e51e170..f641df99bb 100644
--- a/src/Stripe.net/Entities/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisputedTransaction.cs
+++ b/src/Stripe.net/Entities/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisputedTransaction.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisputedTransaction : StripeEntity<DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisputedTransaction>
     {
@@ -9,12 +12,18 @@ public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisput
         /// Stripe charge ID for the Visa Compelling Evidence 3.0 eligible prior charge.
         /// </summary>
         [JsonProperty("charge")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("charge")]
+#endif
         public string Charge { get; set; }
 
         /// <summary>
         /// User Account ID used to log into business platform. Must be recognizable by the user.
         /// </summary>
         [JsonProperty("customer_account_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_account_id")]
+#endif
         public string CustomerAccountId { get; set; }
 
         /// <summary>
@@ -22,6 +31,9 @@ public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisput
         /// hardware and software attributes. Must be at least 20 characters.
         /// </summary>
         [JsonProperty("customer_device_fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_device_fingerprint")]
+#endif
         public string CustomerDeviceFingerprint { get; set; }
 
         /// <summary>
@@ -29,24 +41,36 @@ public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisput
         /// International Mobile Equipment Identity [IMEI]). Must be at least 15 characters.
         /// </summary>
         [JsonProperty("customer_device_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_device_id")]
+#endif
         public string CustomerDeviceId { get; set; }
 
         /// <summary>
         /// The email address of the customer.
         /// </summary>
         [JsonProperty("customer_email_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_email_address")]
+#endif
         public string CustomerEmailAddress { get; set; }
 
         /// <summary>
         /// The IP address that the customer used when making the purchase.
         /// </summary>
         [JsonProperty("customer_purchase_ip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_purchase_ip")]
+#endif
         public string CustomerPurchaseIp { get; set; }
 
         /// <summary>
         /// A description of the product or service that was sold.
         /// </summary>
         [JsonProperty("product_description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_description")]
+#endif
         public string ProductDescription { get; set; }
 
         /// <summary>
@@ -54,6 +78,9 @@ public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisput
         /// Compelling Evidence 3.0 evidence submission.
         /// </summary>
         [JsonProperty("shipping_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_address")]
+#endif
         public DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisputedTransactionShippingAddress ShippingAddress { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisputedTransactionShippingAddress.cs b/src/Stripe.net/Entities/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisputedTransactionShippingAddress.cs
index 773979bca9..8ac8f2cb1a 100644
--- a/src/Stripe.net/Entities/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisputedTransactionShippingAddress.cs
+++ b/src/Stripe.net/Entities/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisputedTransactionShippingAddress.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisputedTransactionShippingAddress : StripeEntity<DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisputedTransactionShippingAddress>
     {
@@ -9,6 +12,9 @@ public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisput
         /// City, district, suburb, town, or village.
         /// </summary>
         [JsonProperty("city")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("city")]
+#endif
         public string City { get; set; }
 
         /// <summary>
@@ -16,30 +22,45 @@ public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisput
         /// 3166-1 alpha-2</a>).
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
         /// Address line 1 (e.g., street, PO Box, or company name).
         /// </summary>
         [JsonProperty("line1")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line1")]
+#endif
         public string Line1 { get; set; }
 
         /// <summary>
         /// Address line 2 (e.g., apartment, suite, unit, or building).
         /// </summary>
         [JsonProperty("line2")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line2")]
+#endif
         public string Line2 { get; set; }
 
         /// <summary>
         /// ZIP or postal code.
         /// </summary>
         [JsonProperty("postal_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("postal_code")]
+#endif
         public string PostalCode { get; set; }
 
         /// <summary>
         /// State, county, province, or region.
         /// </summary>
         [JsonProperty("state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("state")]
+#endif
         public string State { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompliance.cs b/src/Stripe.net/Entities/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompliance.cs
index 2c57298548..c23b6ff6fd 100644
--- a/src/Stripe.net/Entities/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompliance.cs
+++ b/src/Stripe.net/Entities/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompliance.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeEvidenceEnhancedEvidenceVisaCompliance : StripeEntity<DisputeEvidenceEnhancedEvidenceVisaCompliance>
     {
@@ -13,6 +16,9 @@ public class DisputeEvidenceEnhancedEvidenceVisaCompliance : StripeEntity<Disput
         /// the dispute.
         /// </summary>
         [JsonProperty("fee_acknowledged")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fee_acknowledged")]
+#endif
         public bool FeeAcknowledged { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Disputes/DisputePaymentMethodDetails.cs b/src/Stripe.net/Entities/Disputes/DisputePaymentMethodDetails.cs
index 4836645e34..9c590c8315 100644
--- a/src/Stripe.net/Entities/Disputes/DisputePaymentMethodDetails.cs
+++ b/src/Stripe.net/Entities/Disputes/DisputePaymentMethodDetails.cs
@@ -2,19 +2,34 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputePaymentMethodDetails : StripeEntity<DisputePaymentMethodDetails>
     {
         [JsonProperty("amazon_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amazon_pay")]
+#endif
         public DisputePaymentMethodDetailsAmazonPay AmazonPay { get; set; }
 
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public DisputePaymentMethodDetailsCard Card { get; set; }
 
         [JsonProperty("klarna")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("klarna")]
+#endif
         public DisputePaymentMethodDetailsKlarna Klarna { get; set; }
 
         [JsonProperty("paypal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paypal")]
+#endif
         public DisputePaymentMethodDetailsPaypal Paypal { get; set; }
 
         /// <summary>
@@ -22,6 +37,9 @@ public class DisputePaymentMethodDetails : StripeEntity<DisputePaymentMethodDeta
         /// One of: <c>amazon_pay</c>, <c>card</c>, <c>klarna</c>, or <c>paypal</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Disputes/DisputePaymentMethodDetailsAmazonPay.cs b/src/Stripe.net/Entities/Disputes/DisputePaymentMethodDetailsAmazonPay.cs
index 97f8580c98..a91f95efa8 100644
--- a/src/Stripe.net/Entities/Disputes/DisputePaymentMethodDetailsAmazonPay.cs
+++ b/src/Stripe.net/Entities/Disputes/DisputePaymentMethodDetailsAmazonPay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputePaymentMethodDetailsAmazonPay : StripeEntity<DisputePaymentMethodDetailsAmazonPay>
     {
@@ -10,6 +13,9 @@ public class DisputePaymentMethodDetailsAmazonPay : StripeEntity<DisputePaymentM
         /// One of: <c>chargeback</c>, or <c>claim</c>.
         /// </summary>
         [JsonProperty("dispute_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dispute_type")]
+#endif
         public string DisputeType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Disputes/DisputePaymentMethodDetailsCard.cs b/src/Stripe.net/Entities/Disputes/DisputePaymentMethodDetailsCard.cs
index 13c1f28f8d..23b3d655ae 100644
--- a/src/Stripe.net/Entities/Disputes/DisputePaymentMethodDetailsCard.cs
+++ b/src/Stripe.net/Entities/Disputes/DisputePaymentMethodDetailsCard.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputePaymentMethodDetailsCard : StripeEntity<DisputePaymentMethodDetailsCard>
     {
@@ -11,6 +14,9 @@ public class DisputePaymentMethodDetailsCard : StripeEntity<DisputePaymentMethod
         /// <c>unknown</c>.
         /// </summary>
         [JsonProperty("brand")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brand")]
+#endif
         public string Brand { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class DisputePaymentMethodDetailsCard : StripeEntity<DisputePaymentMethod
         /// One of: <c>chargeback</c>, or <c>inquiry</c>.
         /// </summary>
         [JsonProperty("case_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("case_type")]
+#endif
         public string CaseType { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class DisputePaymentMethodDetailsCard : StripeEntity<DisputePaymentMethod
         /// lists all available dispute reason codes by network.
         /// </summary>
         [JsonProperty("network_reason_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network_reason_code")]
+#endif
         public string NetworkReasonCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Disputes/DisputePaymentMethodDetailsKlarna.cs b/src/Stripe.net/Entities/Disputes/DisputePaymentMethodDetailsKlarna.cs
index ae8af4011f..29a38abf0f 100644
--- a/src/Stripe.net/Entities/Disputes/DisputePaymentMethodDetailsKlarna.cs
+++ b/src/Stripe.net/Entities/Disputes/DisputePaymentMethodDetailsKlarna.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputePaymentMethodDetailsKlarna : StripeEntity<DisputePaymentMethodDetailsKlarna>
     {
@@ -9,6 +12,9 @@ public class DisputePaymentMethodDetailsKlarna : StripeEntity<DisputePaymentMeth
         /// The reason for the dispute as defined by Klarna.
         /// </summary>
         [JsonProperty("reason_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason_code")]
+#endif
         public string ReasonCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Disputes/DisputePaymentMethodDetailsPaypal.cs b/src/Stripe.net/Entities/Disputes/DisputePaymentMethodDetailsPaypal.cs
index 112b773c5f..d266cb153b 100644
--- a/src/Stripe.net/Entities/Disputes/DisputePaymentMethodDetailsPaypal.cs
+++ b/src/Stripe.net/Entities/Disputes/DisputePaymentMethodDetailsPaypal.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputePaymentMethodDetailsPaypal : StripeEntity<DisputePaymentMethodDetailsPaypal>
     {
@@ -9,12 +12,18 @@ public class DisputePaymentMethodDetailsPaypal : StripeEntity<DisputePaymentMeth
         /// The ID of the dispute in PayPal.
         /// </summary>
         [JsonProperty("case_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("case_id")]
+#endif
         public string CaseId { get; set; }
 
         /// <summary>
         /// The reason for the dispute as defined by PayPal.
         /// </summary>
         [JsonProperty("reason_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason_code")]
+#endif
         public string ReasonCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Entitlements/ActiveEntitlementSummaries/ActiveEntitlementSummary.cs b/src/Stripe.net/Entities/Entitlements/ActiveEntitlementSummaries/ActiveEntitlementSummary.cs
index fb81c0e0af..2e0341a897 100644
--- a/src/Stripe.net/Entities/Entitlements/ActiveEntitlementSummaries/ActiveEntitlementSummary.cs
+++ b/src/Stripe.net/Entities/Entitlements/ActiveEntitlementSummaries/ActiveEntitlementSummary.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Entitlements
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A summary of a customer's active entitlements.
@@ -12,18 +15,27 @@ public class ActiveEntitlementSummary : StripeEntity<ActiveEntitlementSummary>,
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// The customer that is entitled to this feature.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
         /// The list of entitlements this customer has.
         /// </summary>
         [JsonProperty("entitlements")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("entitlements")]
+#endif
         public StripeList<ActiveEntitlement> Entitlements { get; set; }
 
         /// <summary>
@@ -31,6 +43,9 @@ public class ActiveEntitlementSummary : StripeEntity<ActiveEntitlementSummary>,
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Entitlements/ActiveEntitlements/ActiveEntitlement.cs b/src/Stripe.net/Entities/Entitlements/ActiveEntitlements/ActiveEntitlement.cs
index 062052f0e4..9c91921ceb 100644
--- a/src/Stripe.net/Entities/Entitlements/ActiveEntitlements/ActiveEntitlement.cs
+++ b/src/Stripe.net/Entities/Entitlements/ActiveEntitlements/ActiveEntitlement.cs
@@ -3,22 +3,34 @@ namespace Stripe.Entitlements
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// An active entitlement describes access to a feature for a customer.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class ActiveEntitlement : StripeEntity<ActiveEntitlement>, IHasId, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         #region Expandable Feature
@@ -29,6 +41,9 @@ public class ActiveEntitlement : StripeEntity<ActiveEntitlement>, IHasId, IHasOb
         /// customer is entitled to.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string FeatureId
         {
             get => this.InternalFeature?.Id;
@@ -43,6 +58,9 @@ public string FeatureId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Feature Feature
         {
             get => this.InternalFeature?.ExpandedObject;
@@ -51,6 +69,10 @@ public Feature Feature
 
         [JsonProperty("feature")]
         [JsonConverter(typeof(ExpandableFieldConverter<Feature>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("feature")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Feature>))]
+#endif
         internal ExpandableField<Feature> InternalFeature { get; set; }
         #endregion
 
@@ -59,12 +81,18 @@ public Feature Feature
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
         /// A unique key you provide as your own system identifier. This may be up to 80 characters.
         /// </summary>
         [JsonProperty("lookup_key")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lookup_key")]
+#endif
         public string LookupKey { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Entitlements/Features/Feature.cs b/src/Stripe.net/Entities/Entitlements/Features/Feature.cs
index 742c3b5942..05b21e826f 100644
--- a/src/Stripe.net/Entities/Entitlements/Features/Feature.cs
+++ b/src/Stripe.net/Entities/Entitlements/Features/Feature.cs
@@ -3,6 +3,9 @@ namespace Stripe.Entitlements
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A feature represents a monetizable ability or functionality in your system. Features can
@@ -15,12 +18,18 @@ public class Feature : StripeEntity<Feature>, IHasId, IHasMetadata, IHasObject
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class Feature : StripeEntity<Feature>, IHasId, IHasMetadata, IHasObject
         /// features list endpoint.
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool Active { get; set; }
 
         /// <summary>
@@ -35,12 +47,18 @@ public class Feature : StripeEntity<Feature>, IHasId, IHasMetadata, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
         /// A unique key you provide as your own system identifier. This may be up to 80 characters.
         /// </summary>
         [JsonProperty("lookup_key")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lookup_key")]
+#endif
         public string LookupKey { get; set; }
 
         /// <summary>
@@ -48,12 +66,18 @@ public class Feature : StripeEntity<Feature>, IHasId, IHasMetadata, IHasObject
         /// additional information about the object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The feature's name, for your own purpose, not meant to be displayable to the customer.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/EphemeralKeys/EphemeralKey.cs b/src/Stripe.net/Entities/EphemeralKeys/EphemeralKey.cs
index 0b85412b1f..bdf5a9534a 100644
--- a/src/Stripe.net/Entities/EphemeralKeys/EphemeralKey.cs
+++ b/src/Stripe.net/Entities/EphemeralKeys/EphemeralKey.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class EphemeralKey : StripeEntity<EphemeralKey>, IHasId, IHasObject
     {
@@ -11,12 +14,18 @@ public class EphemeralKey : StripeEntity<EphemeralKey>, IHasId, IHasObject
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -24,12 +33,20 @@ public class EphemeralKey : StripeEntity<EphemeralKey>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// Whether this object is deleted or not.
         /// </summary>
         [JsonProperty("deleted", NullValueHandling = NullValueHandling.Ignore)]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+        [STJS.JsonIgnore(Condition = STJS.JsonIgnoreCondition.WhenWritingNull)]
+#endif
         public bool? Deleted { get; set; }
 
         /// <summary>
@@ -37,6 +54,10 @@ public class EphemeralKey : StripeEntity<EphemeralKey>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("expires")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Expires { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -44,15 +65,24 @@ public class EphemeralKey : StripeEntity<EphemeralKey>, IHasId, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
         /// The key's secret. You can use this value to make authorized requests to the Stripe API.
         /// </summary>
         [JsonProperty("secret")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("secret")]
+#endif
         public string Secret { get; set; }
 
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string RawJson => this.StripeResponse?.Content;
     }
 }
diff --git a/src/Stripe.net/Entities/Events/Event.cs b/src/Stripe.net/Entities/Events/Event.cs
index c9219cde7d..f108833550 100644
--- a/src/Stripe.net/Entities/Events/Event.cs
+++ b/src/Stripe.net/Entities/Events/Event.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Events are our way of letting you know when something interesting happens in your
@@ -36,24 +39,36 @@ namespace Stripe
     /// href="https://stripe.com/docs/api#retrieve_event">Retrieve Event API</a> for 30 days.
     /// </summary>
     [JsonConverter(typeof(EventConverter))]
+#if NET6_0_OR_GREATER
+    [NoSystemTextJsonAttributesNeeded("Converter is only needed for deserialization inside the Stripe.net SDK")]
+#endif
     public class Event : StripeEntity<Event>, IHasId, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// The connected account that originates the event.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public string Account { get; set; }
 
         /// <summary>
@@ -61,6 +76,9 @@ public class Event : StripeEntity<Event>, IHasId, IHasObject
         /// events on or after October 31, 2014.
         /// </summary>
         [JsonProperty("api_version")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("api_version")]
+#endif
         public string ApiVersion { get; set; }
 
         /// <summary>
@@ -68,9 +86,16 @@ public class Event : StripeEntity<Event>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         [JsonProperty("data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("data")]
+#endif
         public EventData Data { get; set; }
 
         /// <summary>
@@ -78,6 +103,9 @@ public class Event : StripeEntity<Event>, IHasId, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -85,12 +113,18 @@ public class Event : StripeEntity<Event>, IHasId, IHasObject
         /// 20x response) to the URLs you specify.
         /// </summary>
         [JsonProperty("pending_webhooks")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pending_webhooks")]
+#endif
         public long PendingWebhooks { get; set; }
 
         /// <summary>
         /// Information on the API request that triggers the event.
         /// </summary>
         [JsonProperty("request")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request")]
+#endif
         public EventRequest Request { get; set; }
 
         /// <summary>
@@ -219,6 +253,9 @@ public class Event : StripeEntity<Event>, IHasId, IHasObject
         /// <c>ping</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Events/EventData.cs b/src/Stripe.net/Entities/Events/EventData.cs
index 8fe787bc61..e22a8442ff 100644
--- a/src/Stripe.net/Entities/Events/EventData.cs
+++ b/src/Stripe.net/Entities/Events/EventData.cs
@@ -2,6 +2,9 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class EventData : StripeEntity<EventData>
     {
@@ -12,6 +15,9 @@ public class EventData : StripeEntity<EventData>
         /// </summary>
         [JsonProperty("object")]
         [JsonConverter(typeof(StripeObjectConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public IHasObject Object { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class EventData : StripeEntity<EventData>
         /// values (sent along only with *.updated events).
         /// </summary>
         [JsonProperty("previous_attributes")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("previous_attributes")]
+#endif
         public dynamic PreviousAttributes { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class EventData : StripeEntity<EventData>
         /// library does not have a concrete type.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public dynamic RawObject { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Events/EventRequest.cs b/src/Stripe.net/Entities/Events/EventRequest.cs
index f8a7011d8d..e056ce104a 100644
--- a/src/Stripe.net/Entities/Events/EventRequest.cs
+++ b/src/Stripe.net/Entities/Events/EventRequest.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class EventRequest : StripeEntity<EventRequest>, IHasId
     {
@@ -11,6 +14,9 @@ public class EventRequest : StripeEntity<EventRequest>, IHasId
         /// href="https://dashboard.stripe.com/logs">dashboard</a>, but currently not in the API.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class EventRequest : StripeEntity<EventRequest>, IHasId
         /// populated only for events on or after May 23, 2017</em>.
         /// </summary>
         [JsonProperty("idempotency_key")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("idempotency_key")]
+#endif
         public string IdempotencyKey { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ExpandableField.cs b/src/Stripe.net/Entities/ExpandableField.cs
index e56171bbc1..4f411a0ff9 100644
--- a/src/Stripe.net/Entities/ExpandableField.cs
+++ b/src/Stripe.net/Entities/ExpandableField.cs
@@ -1,9 +1,16 @@
 namespace Stripe
 {
     using System;
+#if NET6_0_OR_GREATER
+    using Stripe.Infrastructure;
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>Represents a generic expandable field.</summary>
     /// <typeparam name="T">Type of the field when expanded.</typeparam>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJExpandableFieldConverterFactory))]
+#endif
     public class ExpandableField<T> : IExpandableField<T>
         where T : IHasId
     {
diff --git a/src/Stripe.net/Entities/FileLinks/FileLink.cs b/src/Stripe.net/Entities/FileLinks/FileLink.cs
index 1f8449b85b..c5e5178a31 100644
--- a/src/Stripe.net/Entities/FileLinks/FileLink.cs
+++ b/src/Stripe.net/Entities/FileLinks/FileLink.cs
@@ -5,24 +5,36 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// To share the contents of a <c>File</c> object with non-Stripe users, you can create a
     /// <c>FileLink</c>. <c>FileLink</c>s contain a URL that you can use to retrieve the
     /// contents of the file without authentication.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class FileLink : StripeEntity<FileLink>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -30,12 +42,19 @@ public class FileLink : StripeEntity<FileLink>, IHasId, IHasMetadata, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// Returns if the link is already expired.
         /// </summary>
         [JsonProperty("expired")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expired")]
+#endif
         public bool Expired { get; set; }
 
         /// <summary>
@@ -43,6 +62,10 @@ public class FileLink : StripeEntity<FileLink>, IHasId, IHasMetadata, IHasObject
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpiresAt { get; set; }
 
         #region Expandable File
@@ -52,6 +75,9 @@ public class FileLink : StripeEntity<FileLink>, IHasId, IHasMetadata, IHasObject
         /// The file object this link points to.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string FileId
         {
             get => this.InternalFile?.Id;
@@ -65,6 +91,9 @@ public string FileId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File File
         {
             get => this.InternalFile?.ExpandedObject;
@@ -73,6 +102,10 @@ public File File
 
         [JsonProperty("file")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("file")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalFile { get; set; }
         #endregion
 
@@ -81,6 +114,9 @@ public File File
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -89,12 +125,18 @@ public File File
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The publicly accessible URL to download the file.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Files/File.cs b/src/Stripe.net/Entities/Files/File.cs
index 2b95419aaf..55f81c6ff7 100644
--- a/src/Stripe.net/Entities/Files/File.cs
+++ b/src/Stripe.net/Entities/Files/File.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// This object represents files hosted on Stripe's servers. You can upload files with the
@@ -20,12 +23,18 @@ public class File : StripeEntity<File>, IHasId, IHasObject
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -33,6 +42,10 @@ public class File : StripeEntity<File>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -40,12 +53,19 @@ public class File : StripeEntity<File>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpiresAt { get; set; }
 
         /// <summary>
         /// The suitable name for saving the file to a filesystem.
         /// </summary>
         [JsonProperty("filename")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("filename")]
+#endif
         public string Filename { get; set; }
 
         /// <summary>
@@ -53,6 +73,9 @@ public class File : StripeEntity<File>, IHasId, IHasObject
         /// this file.
         /// </summary>
         [JsonProperty("links")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("links")]
+#endif
         public StripeList<FileLink> Links { get; set; }
 
         /// <summary>
@@ -67,30 +90,45 @@ public class File : StripeEntity<File>, IHasId, IHasObject
         /// <c>tax_document_user_upload</c>, or <c>terminal_reader_splashscreen</c>.
         /// </summary>
         [JsonProperty("purpose")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("purpose")]
+#endif
         public string Purpose { get; set; }
 
         /// <summary>
         /// The size of the file object in bytes.
         /// </summary>
         [JsonProperty("size")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("size")]
+#endif
         public long Size { get; set; }
 
         /// <summary>
         /// A suitable title for the document.
         /// </summary>
         [JsonProperty("title")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("title")]
+#endif
         public string Title { get; set; }
 
         /// <summary>
         /// The returned file type (for example, <c>csv</c>, <c>pdf</c>, <c>jpg</c>, or <c>png</c>).
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
         /// Use your live secret API key to download the file from this URL.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/FinancialConnections/AccountOwners/AccountOwner.cs b/src/Stripe.net/Entities/FinancialConnections/AccountOwners/AccountOwner.cs
index 7a831e575b..e9494a55c4 100644
--- a/src/Stripe.net/Entities/FinancialConnections/AccountOwners/AccountOwner.cs
+++ b/src/Stripe.net/Entities/FinancialConnections/AccountOwners/AccountOwner.cs
@@ -4,6 +4,9 @@ namespace Stripe.FinancialConnections
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Describes an owner of an account.
@@ -14,42 +17,63 @@ public class AccountOwner : StripeEntity<AccountOwner>, IHasId, IHasObject
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// The email address of the owner.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// The full name of the owner.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// The ownership object that this owner belongs to.
         /// </summary>
         [JsonProperty("ownership")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ownership")]
+#endif
         public string Ownership { get; set; }
 
         /// <summary>
         /// The raw phone number of the owner.
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
 
         /// <summary>
         /// The raw physical address of the owner.
         /// </summary>
         [JsonProperty("raw_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("raw_address")]
+#endif
         public string RawAddress { get; set; }
 
         /// <summary>
@@ -57,6 +81,10 @@ public class AccountOwner : StripeEntity<AccountOwner>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("refreshed_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refreshed_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? RefreshedAt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/FinancialConnections/AccountOwnerships/AccountOwnership.cs b/src/Stripe.net/Entities/FinancialConnections/AccountOwnerships/AccountOwnership.cs
index 6c0506f9c9..de6bbea691 100644
--- a/src/Stripe.net/Entities/FinancialConnections/AccountOwnerships/AccountOwnership.cs
+++ b/src/Stripe.net/Entities/FinancialConnections/AccountOwnerships/AccountOwnership.cs
@@ -4,6 +4,9 @@ namespace Stripe.FinancialConnections
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Describes a snapshot of the owners of an account at a particular point in time.
@@ -14,12 +17,18 @@ public class AccountOwnership : StripeEntity<AccountOwnership>, IHasId, IHasObje
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -27,12 +36,19 @@ public class AccountOwnership : StripeEntity<AccountOwnership>, IHasId, IHasObje
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// A paginated list of owners for this account.
         /// </summary>
         [JsonProperty("owners")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("owners")]
+#endif
         public StripeList<AccountOwner> Owners { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/FinancialConnections/Accounts/Account.cs b/src/Stripe.net/Entities/FinancialConnections/Accounts/Account.cs
index a60587dcfc..591ddc6366 100644
--- a/src/Stripe.net/Entities/FinancialConnections/Accounts/Account.cs
+++ b/src/Stripe.net/Entities/FinancialConnections/Accounts/Account.cs
@@ -5,41 +5,62 @@ namespace Stripe.FinancialConnections
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A Financial Connections Account represents an account that exists outside of Stripe, to
     /// which you have been granted some degree of access.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class Account : StripeEntity<Account>, IHasId, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// The account holder that this account belongs to.
         /// </summary>
         [JsonProperty("account_holder")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder")]
+#endif
         public AccountAccountHolder AccountHolder { get; set; }
 
         /// <summary>
         /// The most recent information about the account's balance.
         /// </summary>
         [JsonProperty("balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("balance")]
+#endif
         public AccountBalance Balance { get; set; }
 
         /// <summary>
         /// The state of the most recent attempt to refresh the account balance.
         /// </summary>
         [JsonProperty("balance_refresh")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("balance_refresh")]
+#endif
         public AccountBalanceRefresh BalanceRefresh { get; set; }
 
         /// <summary>
@@ -47,6 +68,9 @@ public class Account : StripeEntity<Account>, IHasId, IHasObject
         /// One of: <c>cash</c>, <c>credit</c>, <c>investment</c>, or <c>other</c>.
         /// </summary>
         [JsonProperty("category")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("category")]
+#endif
         public string Category { get; set; }
 
         /// <summary>
@@ -54,6 +78,10 @@ public class Account : StripeEntity<Account>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -61,18 +89,27 @@ public class Account : StripeEntity<Account>, IHasId, IHasObject
         /// holder or by the institution.
         /// </summary>
         [JsonProperty("display_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_name")]
+#endif
         public string DisplayName { get; set; }
 
         /// <summary>
         /// The name of the institution that holds this account.
         /// </summary>
         [JsonProperty("institution_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("institution_name")]
+#endif
         public string InstitutionName { get; set; }
 
         /// <summary>
         /// The last 4 digits of the account number. If present, this will be 4 numeric characters.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
@@ -80,6 +117,9 @@ public class Account : StripeEntity<Account>, IHasId, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         #region Expandable Ownership
@@ -89,6 +129,9 @@ public class Account : StripeEntity<Account>, IHasId, IHasObject
         /// The most recent information about the account's owners.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string OwnershipId
         {
             get => this.InternalOwnership?.Id;
@@ -102,6 +145,9 @@ public string OwnershipId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public AccountOwnership Ownership
         {
             get => this.InternalOwnership?.ExpandedObject;
@@ -110,6 +156,10 @@ public AccountOwnership Ownership
 
         [JsonProperty("ownership")]
         [JsonConverter(typeof(ExpandableFieldConverter<AccountOwnership>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ownership")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<AccountOwnership>))]
+#endif
         internal ExpandableField<AccountOwnership> InternalOwnership { get; set; }
         #endregion
 
@@ -117,6 +167,9 @@ public AccountOwnership Ownership
         /// The state of the most recent attempt to refresh the account owners.
         /// </summary>
         [JsonProperty("ownership_refresh")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ownership_refresh")]
+#endif
         public AccountOwnershipRefresh OwnershipRefresh { get; set; }
 
         /// <summary>
@@ -125,6 +178,9 @@ public AccountOwnership Ownership
         /// <c>transactions</c>.
         /// </summary>
         [JsonProperty("permissions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("permissions")]
+#endif
         public List<string> Permissions { get; set; }
 
         /// <summary>
@@ -132,6 +188,9 @@ public AccountOwnership Ownership
         /// One of: <c>active</c>, <c>disconnected</c>, or <c>inactive</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -148,12 +207,18 @@ public AccountOwnership Ownership
         /// <c>other</c>, or <c>savings</c>.
         /// </summary>
         [JsonProperty("subcategory")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subcategory")]
+#endif
         public string Subcategory { get; set; }
 
         /// <summary>
         /// The list of data refresh subscriptions requested on this account.
         /// </summary>
         [JsonProperty("subscriptions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscriptions")]
+#endif
         public List<string> Subscriptions { get; set; }
 
         /// <summary>
@@ -163,12 +228,18 @@ public AccountOwnership Ownership
         /// One of: <c>link</c>, or <c>us_bank_account</c>.
         /// </summary>
         [JsonProperty("supported_payment_method_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("supported_payment_method_types")]
+#endif
         public List<string> SupportedPaymentMethodTypes { get; set; }
 
         /// <summary>
         /// The state of the most recent attempt to refresh the account transactions.
         /// </summary>
         [JsonProperty("transaction_refresh")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_refresh")]
+#endif
         public AccountTransactionRefresh TransactionRefresh { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/FinancialConnections/Accounts/AccountAccountHolder.cs b/src/Stripe.net/Entities/FinancialConnections/Accounts/AccountAccountHolder.cs
index f2fdce6ec5..8862b6d4ed 100644
--- a/src/Stripe.net/Entities/FinancialConnections/Accounts/AccountAccountHolder.cs
+++ b/src/Stripe.net/Entities/FinancialConnections/Accounts/AccountAccountHolder.cs
@@ -3,7 +3,13 @@ namespace Stripe.FinancialConnections
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class AccountAccountHolder : StripeEntity<AccountAccountHolder>
     {
         #region Expandable Account
@@ -14,6 +20,9 @@ public class AccountAccountHolder : StripeEntity<AccountAccountHolder>
         /// <c>account_holder.type</c> is <c>account</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AccountId
         {
             get => this.InternalAccount?.Id;
@@ -28,6 +37,9 @@ public string AccountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Account
         {
             get => this.InternalAccount?.ExpandedObject;
@@ -36,6 +48,10 @@ public Account Account
 
         [JsonProperty("account")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalAccount { get; set; }
         #endregion
 
@@ -47,6 +63,9 @@ public Account Account
         /// <c>account_holder.type</c> is <c>customer</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerId
         {
             get => this.InternalCustomer?.Id;
@@ -61,6 +80,9 @@ public string CustomerId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Customer Customer
         {
             get => this.InternalCustomer?.ExpandedObject;
@@ -69,6 +91,10 @@ public Customer Customer
 
         [JsonProperty("customer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Customer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Customer>))]
+#endif
         internal ExpandableField<Customer> InternalCustomer { get; set; }
         #endregion
 
@@ -77,6 +103,9 @@ public Customer Customer
         /// One of: <c>account</c>, or <c>customer</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/FinancialConnections/Accounts/AccountBalance.cs b/src/Stripe.net/Entities/FinancialConnections/Accounts/AccountBalance.cs
index 54ada31427..b27a6e60f7 100644
--- a/src/Stripe.net/Entities/FinancialConnections/Accounts/AccountBalance.cs
+++ b/src/Stripe.net/Entities/FinancialConnections/Accounts/AccountBalance.cs
@@ -5,6 +5,9 @@ namespace Stripe.FinancialConnections
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountBalance : StripeEntity<AccountBalance>
     {
@@ -14,12 +17,22 @@ public class AccountBalance : StripeEntity<AccountBalance>
         /// </summary>
         [JsonProperty("as_of")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("as_of")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime AsOf { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         [JsonProperty("cash")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cash")]
+#endif
         public AccountBalanceCash Cash { get; set; }
 
         [JsonProperty("credit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("credit")]
+#endif
         public AccountBalanceCredit Credit { get; set; }
 
         /// <summary>
@@ -34,6 +47,9 @@ public class AccountBalance : StripeEntity<AccountBalance>
         /// holder. A negative amount indicates money owed by the account holder.
         /// </summary>
         [JsonProperty("current")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("current")]
+#endif
         public Dictionary<string, long> Current { get; set; }
 
         /// <summary>
@@ -42,6 +58,9 @@ public class AccountBalance : StripeEntity<AccountBalance>
         /// One of: <c>cash</c>, or <c>credit</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/FinancialConnections/Accounts/AccountBalanceCash.cs b/src/Stripe.net/Entities/FinancialConnections/Accounts/AccountBalanceCash.cs
index c5d378dcbb..d34e908e09 100644
--- a/src/Stripe.net/Entities/FinancialConnections/Accounts/AccountBalanceCash.cs
+++ b/src/Stripe.net/Entities/FinancialConnections/Accounts/AccountBalanceCash.cs
@@ -3,6 +3,9 @@ namespace Stripe.FinancialConnections
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountBalanceCash : StripeEntity<AccountBalanceCash>
     {
@@ -19,6 +22,9 @@ public class AccountBalanceCash : StripeEntity<AccountBalanceCash>
         /// holder. A negative amount indicates money owed by the account holder.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public Dictionary<string, long> Available { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/FinancialConnections/Accounts/AccountBalanceCredit.cs b/src/Stripe.net/Entities/FinancialConnections/Accounts/AccountBalanceCredit.cs
index 5fed450505..4cc5c34493 100644
--- a/src/Stripe.net/Entities/FinancialConnections/Accounts/AccountBalanceCredit.cs
+++ b/src/Stripe.net/Entities/FinancialConnections/Accounts/AccountBalanceCredit.cs
@@ -3,6 +3,9 @@ namespace Stripe.FinancialConnections
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountBalanceCredit : StripeEntity<AccountBalanceCredit>
     {
@@ -17,6 +20,9 @@ public class AccountBalanceCredit : StripeEntity<AccountBalanceCredit>
         /// holder. A negative amount indicates money owed by the account holder.
         /// </summary>
         [JsonProperty("used")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("used")]
+#endif
         public Dictionary<string, long> Used { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/FinancialConnections/Accounts/AccountBalanceRefresh.cs b/src/Stripe.net/Entities/FinancialConnections/Accounts/AccountBalanceRefresh.cs
index 5553fc6b64..26f2e6f6f4 100644
--- a/src/Stripe.net/Entities/FinancialConnections/Accounts/AccountBalanceRefresh.cs
+++ b/src/Stripe.net/Entities/FinancialConnections/Accounts/AccountBalanceRefresh.cs
@@ -4,6 +4,9 @@ namespace Stripe.FinancialConnections
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountBalanceRefresh : StripeEntity<AccountBalanceRefresh>
     {
@@ -13,6 +16,10 @@ public class AccountBalanceRefresh : StripeEntity<AccountBalanceRefresh>
         /// </summary>
         [JsonProperty("last_attempted_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_attempted_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime LastAttemptedAt { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -21,6 +28,10 @@ public class AccountBalanceRefresh : StripeEntity<AccountBalanceRefresh>
         /// </summary>
         [JsonProperty("next_refresh_available_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("next_refresh_available_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? NextRefreshAvailableAt { get; set; }
 
         /// <summary>
@@ -28,6 +39,9 @@ public class AccountBalanceRefresh : StripeEntity<AccountBalanceRefresh>
         /// One of: <c>failed</c>, <c>pending</c>, or <c>succeeded</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/FinancialConnections/Accounts/AccountOwnershipRefresh.cs b/src/Stripe.net/Entities/FinancialConnections/Accounts/AccountOwnershipRefresh.cs
index 0b2637360b..63c11ef590 100644
--- a/src/Stripe.net/Entities/FinancialConnections/Accounts/AccountOwnershipRefresh.cs
+++ b/src/Stripe.net/Entities/FinancialConnections/Accounts/AccountOwnershipRefresh.cs
@@ -4,6 +4,9 @@ namespace Stripe.FinancialConnections
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountOwnershipRefresh : StripeEntity<AccountOwnershipRefresh>
     {
@@ -13,6 +16,10 @@ public class AccountOwnershipRefresh : StripeEntity<AccountOwnershipRefresh>
         /// </summary>
         [JsonProperty("last_attempted_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_attempted_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime LastAttemptedAt { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -22,6 +29,10 @@ public class AccountOwnershipRefresh : StripeEntity<AccountOwnershipRefresh>
         /// </summary>
         [JsonProperty("next_refresh_available_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("next_refresh_available_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? NextRefreshAvailableAt { get; set; }
 
         /// <summary>
@@ -29,6 +40,9 @@ public class AccountOwnershipRefresh : StripeEntity<AccountOwnershipRefresh>
         /// One of: <c>failed</c>, <c>pending</c>, or <c>succeeded</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/FinancialConnections/Accounts/AccountTransactionRefresh.cs b/src/Stripe.net/Entities/FinancialConnections/Accounts/AccountTransactionRefresh.cs
index c95f63517d..4f95d30a6b 100644
--- a/src/Stripe.net/Entities/FinancialConnections/Accounts/AccountTransactionRefresh.cs
+++ b/src/Stripe.net/Entities/FinancialConnections/Accounts/AccountTransactionRefresh.cs
@@ -4,6 +4,9 @@ namespace Stripe.FinancialConnections
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountTransactionRefresh : StripeEntity<AccountTransactionRefresh>, IHasId
     {
@@ -11,6 +14,9 @@ public class AccountTransactionRefresh : StripeEntity<AccountTransactionRefresh>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
@@ -19,6 +25,10 @@ public class AccountTransactionRefresh : StripeEntity<AccountTransactionRefresh>
         /// </summary>
         [JsonProperty("last_attempted_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_attempted_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime LastAttemptedAt { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -28,6 +38,10 @@ public class AccountTransactionRefresh : StripeEntity<AccountTransactionRefresh>
         /// </summary>
         [JsonProperty("next_refresh_available_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("next_refresh_available_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? NextRefreshAvailableAt { get; set; }
 
         /// <summary>
@@ -35,6 +49,9 @@ public class AccountTransactionRefresh : StripeEntity<AccountTransactionRefresh>
         /// One of: <c>failed</c>, <c>pending</c>, or <c>succeeded</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/FinancialConnections/Sessions/Session.cs b/src/Stripe.net/Entities/FinancialConnections/Sessions/Session.cs
index d9e3068c64..76b7b115c9 100644
--- a/src/Stripe.net/Entities/FinancialConnections/Sessions/Session.cs
+++ b/src/Stripe.net/Entities/FinancialConnections/Sessions/Session.cs
@@ -3,6 +3,9 @@ namespace Stripe.FinancialConnections
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A Financial Connections Session is the secure way to programmatically launch the
@@ -14,33 +17,51 @@ public class Session : StripeEntity<Session>, IHasId, IHasObject
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// The account holder for whom accounts are collected in this session.
         /// </summary>
         [JsonProperty("account_holder")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder")]
+#endif
         public SessionAccountHolder AccountHolder { get; set; }
 
         /// <summary>
         /// The accounts that were collected as part of this Session.
         /// </summary>
         [JsonProperty("accounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("accounts")]
+#endif
         public StripeList<Account> Accounts { get; set; }
 
         /// <summary>
         /// A value that will be passed to the client to launch the authentication flow.
         /// </summary>
         [JsonProperty("client_secret")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("client_secret")]
+#endif
         public string ClientSecret { get; set; }
 
         [JsonProperty("filters")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("filters")]
+#endif
         public SessionFilters Filters { get; set; }
 
         /// <summary>
@@ -48,6 +69,9 @@ public class Session : StripeEntity<Session>, IHasId, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -56,6 +80,9 @@ public class Session : StripeEntity<Session>, IHasId, IHasObject
         /// <c>transactions</c>.
         /// </summary>
         [JsonProperty("permissions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("permissions")]
+#endif
         public List<string> Permissions { get; set; }
 
         /// <summary>
@@ -63,6 +90,9 @@ public class Session : StripeEntity<Session>, IHasId, IHasObject
         /// One of: <c>balances</c>, <c>ownership</c>, or <c>transactions</c>.
         /// </summary>
         [JsonProperty("prefetch")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("prefetch")]
+#endif
         public List<string> Prefetch { get; set; }
 
         /// <summary>
@@ -70,6 +100,9 @@ public class Session : StripeEntity<Session>, IHasId, IHasObject
         /// user will be redirected to this URL to return to your app.
         /// </summary>
         [JsonProperty("return_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_url")]
+#endif
         public string ReturnUrl { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/FinancialConnections/Sessions/SessionAccountHolder.cs b/src/Stripe.net/Entities/FinancialConnections/Sessions/SessionAccountHolder.cs
index 41aca04147..5cca3f80bc 100644
--- a/src/Stripe.net/Entities/FinancialConnections/Sessions/SessionAccountHolder.cs
+++ b/src/Stripe.net/Entities/FinancialConnections/Sessions/SessionAccountHolder.cs
@@ -3,7 +3,13 @@ namespace Stripe.FinancialConnections
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SessionAccountHolder : StripeEntity<SessionAccountHolder>
     {
         #region Expandable Account
@@ -14,6 +20,9 @@ public class SessionAccountHolder : StripeEntity<SessionAccountHolder>
         /// <c>account_holder.type</c> is <c>account</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AccountId
         {
             get => this.InternalAccount?.Id;
@@ -28,6 +37,9 @@ public string AccountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Account
         {
             get => this.InternalAccount?.ExpandedObject;
@@ -36,6 +48,10 @@ public Account Account
 
         [JsonProperty("account")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalAccount { get; set; }
         #endregion
 
@@ -47,6 +63,9 @@ public Account Account
         /// <c>account_holder.type</c> is <c>customer</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerId
         {
             get => this.InternalCustomer?.Id;
@@ -61,6 +80,9 @@ public string CustomerId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Customer Customer
         {
             get => this.InternalCustomer?.ExpandedObject;
@@ -69,6 +91,10 @@ public Customer Customer
 
         [JsonProperty("customer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Customer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Customer>))]
+#endif
         internal ExpandableField<Customer> InternalCustomer { get; set; }
         #endregion
 
@@ -77,6 +103,9 @@ public Customer Customer
         /// One of: <c>account</c>, or <c>customer</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/FinancialConnections/Sessions/SessionFilters.cs b/src/Stripe.net/Entities/FinancialConnections/Sessions/SessionFilters.cs
index bfd4594c60..afbe730797 100644
--- a/src/Stripe.net/Entities/FinancialConnections/Sessions/SessionFilters.cs
+++ b/src/Stripe.net/Entities/FinancialConnections/Sessions/SessionFilters.cs
@@ -3,6 +3,9 @@ namespace Stripe.FinancialConnections
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionFilters : StripeEntity<SessionFilters>
     {
@@ -14,12 +17,18 @@ public class SessionFilters : StripeEntity<SessionFilters>
         /// <c>savings</c>.
         /// </summary>
         [JsonProperty("account_subcategories")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_subcategories")]
+#endif
         public List<string> AccountSubcategories { get; set; }
 
         /// <summary>
         /// List of countries from which to filter accounts.
         /// </summary>
         [JsonProperty("countries")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("countries")]
+#endif
         public List<string> Countries { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/FinancialConnections/Transactions/Transaction.cs b/src/Stripe.net/Entities/FinancialConnections/Transactions/Transaction.cs
index 8d71602435..4f6d398c8b 100644
--- a/src/Stripe.net/Entities/FinancialConnections/Transactions/Transaction.cs
+++ b/src/Stripe.net/Entities/FinancialConnections/Transactions/Transaction.cs
@@ -4,6 +4,9 @@ namespace Stripe.FinancialConnections
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A Transaction represents a real transaction that affects a Financial Connections Account
@@ -15,24 +18,36 @@ public class Transaction : StripeEntity<Transaction>, IHasId, IHasObject
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// The ID of the Financial Connections Account this transaction belongs to.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public string Account { get; set; }
 
         /// <summary>
         /// The amount of this transaction, in cents (or local equivalent).
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -41,12 +56,18 @@ public class Transaction : StripeEntity<Transaction>, IHasId, IHasObject
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// The description of this transaction.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -54,6 +75,9 @@ public class Transaction : StripeEntity<Transaction>, IHasId, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -61,9 +85,15 @@ public class Transaction : StripeEntity<Transaction>, IHasId, IHasObject
         /// One of: <c>pending</c>, <c>posted</c>, or <c>void</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         [JsonProperty("status_transitions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_transitions")]
+#endif
         public TransactionStatusTransitions StatusTransitions { get; set; }
 
         /// <summary>
@@ -71,12 +101,19 @@ public class Transaction : StripeEntity<Transaction>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("transacted_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transacted_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime TransactedAt { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// The token of the transaction refresh that last updated or created this transaction.
         /// </summary>
         [JsonProperty("transaction_refresh")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_refresh")]
+#endif
         public string TransactionRefresh { get; set; }
 
         /// <summary>
@@ -84,6 +121,10 @@ public class Transaction : StripeEntity<Transaction>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("updated")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("updated")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Updated { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
     }
 }
diff --git a/src/Stripe.net/Entities/FinancialConnections/Transactions/TransactionStatusTransitions.cs b/src/Stripe.net/Entities/FinancialConnections/Transactions/TransactionStatusTransitions.cs
index fc13979075..e1009c5832 100644
--- a/src/Stripe.net/Entities/FinancialConnections/Transactions/TransactionStatusTransitions.cs
+++ b/src/Stripe.net/Entities/FinancialConnections/Transactions/TransactionStatusTransitions.cs
@@ -4,6 +4,9 @@ namespace Stripe.FinancialConnections
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionStatusTransitions : StripeEntity<TransactionStatusTransitions>
     {
@@ -12,6 +15,10 @@ public class TransactionStatusTransitions : StripeEntity<TransactionStatusTransi
         /// </summary>
         [JsonProperty("posted_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("posted_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? PostedAt { get; set; }
 
         /// <summary>
@@ -19,6 +26,10 @@ public class TransactionStatusTransitions : StripeEntity<TransactionStatusTransi
         /// </summary>
         [JsonProperty("void_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("void_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? VoidAt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Forwarding/Requests/Request.cs b/src/Stripe.net/Entities/Forwarding/Requests/Request.cs
index 8df656e7e6..79c9bc1f79 100644
--- a/src/Stripe.net/Entities/Forwarding/Requests/Request.cs
+++ b/src/Stripe.net/Entities/Forwarding/Requests/Request.cs
@@ -5,6 +5,9 @@ namespace Stripe.Forwarding
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Instructs Stripe to make a request on your behalf using the destination URL. The
@@ -33,12 +36,18 @@ public class Request : StripeEntity<Request>, IHasId, IHasMetadata, IHasObject
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -46,6 +55,10 @@ public class Request : StripeEntity<Request>, IHasId, IHasMetadata, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -53,6 +66,9 @@ public class Request : StripeEntity<Request>, IHasId, IHasMetadata, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -61,6 +77,9 @@ public class Request : StripeEntity<Request>, IHasId, IHasMetadata, IHasObject
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -68,6 +87,9 @@ public class Request : StripeEntity<Request>, IHasId, IHasMetadata, IHasObject
         /// PaymentMethods is allowed.
         /// </summary>
         [JsonProperty("payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method")]
+#endif
         public string PaymentMethod { get; set; }
 
         /// <summary>
@@ -76,18 +98,27 @@ public class Request : StripeEntity<Request>, IHasId, IHasMetadata, IHasObject
         /// or <c>request_signature</c>.
         /// </summary>
         [JsonProperty("replacements")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("replacements")]
+#endif
         public List<string> Replacements { get; set; }
 
         /// <summary>
         /// Context about the request from Stripe's servers to the destination endpoint.
         /// </summary>
         [JsonProperty("request_context")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_context")]
+#endif
         public RequestRequestContext RequestContext { get; set; }
 
         /// <summary>
         /// The request that was sent to the destination endpoint. We redact any sensitive fields.
         /// </summary>
         [JsonProperty("request_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_details")]
+#endif
         public RequestRequestDetails RequestDetails { get; set; }
 
         /// <summary>
@@ -95,12 +126,18 @@ public class Request : StripeEntity<Request>, IHasId, IHasMetadata, IHasObject
         /// fields.
         /// </summary>
         [JsonProperty("response_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("response_details")]
+#endif
         public RequestResponseDetails ResponseDetails { get; set; }
 
         /// <summary>
         /// The destination URL for the forwarded request. Must be supported by the config.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Forwarding/Requests/RequestRequestContext.cs b/src/Stripe.net/Entities/Forwarding/Requests/RequestRequestContext.cs
index 3299c9355d..69400b6f52 100644
--- a/src/Stripe.net/Entities/Forwarding/Requests/RequestRequestContext.cs
+++ b/src/Stripe.net/Entities/Forwarding/Requests/RequestRequestContext.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Forwarding
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RequestRequestContext : StripeEntity<RequestRequestContext>
     {
@@ -9,12 +12,18 @@ public class RequestRequestContext : StripeEntity<RequestRequestContext>
         /// The time it took in milliseconds for the destination endpoint to respond.
         /// </summary>
         [JsonProperty("destination_duration")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination_duration")]
+#endif
         public long DestinationDuration { get; set; }
 
         /// <summary>
         /// The IP address of the destination.
         /// </summary>
         [JsonProperty("destination_ip_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination_ip_address")]
+#endif
         public string DestinationIpAddress { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Forwarding/Requests/RequestRequestDetails.cs b/src/Stripe.net/Entities/Forwarding/Requests/RequestRequestDetails.cs
index 4539e28e74..3307314718 100644
--- a/src/Stripe.net/Entities/Forwarding/Requests/RequestRequestDetails.cs
+++ b/src/Stripe.net/Entities/Forwarding/Requests/RequestRequestDetails.cs
@@ -3,6 +3,9 @@ namespace Stripe.Forwarding
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RequestRequestDetails : StripeEntity<RequestRequestDetails>
     {
@@ -10,6 +13,9 @@ public class RequestRequestDetails : StripeEntity<RequestRequestDetails>
         /// The body payload to send to the destination endpoint.
         /// </summary>
         [JsonProperty("body")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("body")]
+#endif
         public string Body { get; set; }
 
         /// <summary>
@@ -17,12 +23,18 @@ public class RequestRequestDetails : StripeEntity<RequestRequestDetails>
         /// (excluding Stripe-generated ones such as the Content-Type header) should be included.
         /// </summary>
         [JsonProperty("headers")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("headers")]
+#endif
         public List<RequestRequestDetailsHeader> Headers { get; set; }
 
         /// <summary>
         /// The HTTP method used to call the destination endpoint.
         /// </summary>
         [JsonProperty("http_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("http_method")]
+#endif
         public string HttpMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Forwarding/Requests/RequestRequestDetailsHeader.cs b/src/Stripe.net/Entities/Forwarding/Requests/RequestRequestDetailsHeader.cs
index f2e37ee628..40d908f019 100644
--- a/src/Stripe.net/Entities/Forwarding/Requests/RequestRequestDetailsHeader.cs
+++ b/src/Stripe.net/Entities/Forwarding/Requests/RequestRequestDetailsHeader.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Forwarding
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RequestRequestDetailsHeader : StripeEntity<RequestRequestDetailsHeader>
     {
@@ -9,12 +12,18 @@ public class RequestRequestDetailsHeader : StripeEntity<RequestRequestDetailsHea
         /// The header name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// The header value.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Forwarding/Requests/RequestResponseDetails.cs b/src/Stripe.net/Entities/Forwarding/Requests/RequestResponseDetails.cs
index d2e20700b5..0ce5b6d270 100644
--- a/src/Stripe.net/Entities/Forwarding/Requests/RequestResponseDetails.cs
+++ b/src/Stripe.net/Entities/Forwarding/Requests/RequestResponseDetails.cs
@@ -3,6 +3,9 @@ namespace Stripe.Forwarding
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RequestResponseDetails : StripeEntity<RequestResponseDetails>
     {
@@ -10,18 +13,27 @@ public class RequestResponseDetails : StripeEntity<RequestResponseDetails>
         /// The response body from the destination endpoint to Stripe.
         /// </summary>
         [JsonProperty("body")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("body")]
+#endif
         public string Body { get; set; }
 
         /// <summary>
         /// HTTP headers that the destination endpoint returned.
         /// </summary>
         [JsonProperty("headers")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("headers")]
+#endif
         public List<RequestResponseDetailsHeader> Headers { get; set; }
 
         /// <summary>
         /// The HTTP status code that the destination endpoint returned.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public long Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Forwarding/Requests/RequestResponseDetailsHeader.cs b/src/Stripe.net/Entities/Forwarding/Requests/RequestResponseDetailsHeader.cs
index 86ae448fd1..f886e04c0a 100644
--- a/src/Stripe.net/Entities/Forwarding/Requests/RequestResponseDetailsHeader.cs
+++ b/src/Stripe.net/Entities/Forwarding/Requests/RequestResponseDetailsHeader.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Forwarding
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RequestResponseDetailsHeader : StripeEntity<RequestResponseDetailsHeader>
     {
@@ -9,12 +12,18 @@ public class RequestResponseDetailsHeader : StripeEntity<RequestResponseDetailsH
         /// The header name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// The header value.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/FundingInstructions/FundingInstructions.cs b/src/Stripe.net/Entities/FundingInstructions/FundingInstructions.cs
index a9dba40a7d..a7304f39e6 100644
--- a/src/Stripe.net/Entities/FundingInstructions/FundingInstructions.cs
+++ b/src/Stripe.net/Entities/FundingInstructions/FundingInstructions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Each customer has a <a
@@ -18,9 +21,15 @@ public class FundingInstructions : StripeEntity<FundingInstructions>, IHasObject
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         [JsonProperty("bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_transfer")]
+#endif
         public FundingInstructionsBankTransfer BankTransfer { get; set; }
 
         /// <summary>
@@ -29,12 +38,18 @@ public class FundingInstructions : StripeEntity<FundingInstructions>, IHasObject
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// The <c>funding_type</c> of the returned instructions.
         /// </summary>
         [JsonProperty("funding_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding_type")]
+#endif
         public string FundingType { get; set; }
 
         /// <summary>
@@ -42,6 +57,9 @@ public class FundingInstructions : StripeEntity<FundingInstructions>, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransfer.cs b/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransfer.cs
index 60f584d0df..d8fe40f490 100644
--- a/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransfer.cs
+++ b/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransfer.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FundingInstructionsBankTransfer : StripeEntity<FundingInstructionsBankTransfer>
     {
@@ -10,12 +13,18 @@ public class FundingInstructionsBankTransfer : StripeEntity<FundingInstructionsB
         /// The country of the bank account to fund.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
         /// A list of financial addresses that can be used to fund a particular balance.
         /// </summary>
         [JsonProperty("financial_addresses")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_addresses")]
+#endif
         public List<FundingInstructionsBankTransferFinancialAddress> FinancialAddresses { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class FundingInstructionsBankTransfer : StripeEntity<FundingInstructionsB
         /// One of: <c>eu_bank_transfer</c>, or <c>jp_bank_transfer</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransferFinancialAddress.cs b/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransferFinancialAddress.cs
index fae18bdde7..41329d019d 100644
--- a/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransferFinancialAddress.cs
+++ b/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransferFinancialAddress.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FundingInstructionsBankTransferFinancialAddress : StripeEntity<FundingInstructionsBankTransferFinancialAddress>
     {
@@ -10,24 +13,36 @@ public class FundingInstructionsBankTransferFinancialAddress : StripeEntity<Fund
         /// ABA Records contain U.S. bank account details per the ABA format.
         /// </summary>
         [JsonProperty("aba")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("aba")]
+#endif
         public FundingInstructionsBankTransferFinancialAddressAba Aba { get; set; }
 
         /// <summary>
         /// Iban Records contain E.U. bank account details per the SEPA format.
         /// </summary>
         [JsonProperty("iban")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iban")]
+#endif
         public FundingInstructionsBankTransferFinancialAddressIban Iban { get; set; }
 
         /// <summary>
         /// Sort Code Records contain U.K. bank account details per the sort code format.
         /// </summary>
         [JsonProperty("sort_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sort_code")]
+#endif
         public FundingInstructionsBankTransferFinancialAddressSortCode SortCode { get; set; }
 
         /// <summary>
         /// SPEI Records contain Mexico bank account details per the SPEI format.
         /// </summary>
         [JsonProperty("spei")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("spei")]
+#endif
         public FundingInstructionsBankTransferFinancialAddressSpei Spei { get; set; }
 
         /// <summary>
@@ -36,12 +51,18 @@ public class FundingInstructionsBankTransferFinancialAddress : StripeEntity<Fund
         /// <c>spei</c>, <c>swift</c>, or <c>zengin</c>.
         /// </summary>
         [JsonProperty("supported_networks")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("supported_networks")]
+#endif
         public List<string> SupportedNetworks { get; set; }
 
         /// <summary>
         /// SWIFT Records contain U.S. bank account details per the SWIFT format.
         /// </summary>
         [JsonProperty("swift")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("swift")]
+#endif
         public FundingInstructionsBankTransferFinancialAddressSwift Swift { get; set; }
 
         /// <summary>
@@ -50,12 +71,18 @@ public class FundingInstructionsBankTransferFinancialAddress : StripeEntity<Fund
         /// <c>zengin</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
         /// Zengin Records contain Japan bank account details per the Zengin format.
         /// </summary>
         [JsonProperty("zengin")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("zengin")]
+#endif
         public FundingInstructionsBankTransferFinancialAddressZengin Zengin { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransferFinancialAddressAba.cs b/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransferFinancialAddressAba.cs
index c76eeb8253..bae87380fb 100644
--- a/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransferFinancialAddressAba.cs
+++ b/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransferFinancialAddressAba.cs
@@ -2,43 +2,67 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FundingInstructionsBankTransferFinancialAddressAba : StripeEntity<FundingInstructionsBankTransferFinancialAddressAba>
     {
         [JsonProperty("account_holder_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_address")]
+#endif
         public Address AccountHolderAddress { get; set; }
 
         /// <summary>
         /// The account holder name.
         /// </summary>
         [JsonProperty("account_holder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_name")]
+#endif
         public string AccountHolderName { get; set; }
 
         /// <summary>
         /// The ABA account number.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
         /// The account type.
         /// </summary>
         [JsonProperty("account_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_type")]
+#endif
         public string AccountType { get; set; }
 
         [JsonProperty("bank_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_address")]
+#endif
         public Address BankAddress { get; set; }
 
         /// <summary>
         /// The bank name.
         /// </summary>
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         /// <summary>
         /// The ABA routing number.
         /// </summary>
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransferFinancialAddressIban.cs b/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransferFinancialAddressIban.cs
index 416e2bd40c..3f6c0f1e39 100644
--- a/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransferFinancialAddressIban.cs
+++ b/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransferFinancialAddressIban.cs
@@ -2,25 +2,40 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FundingInstructionsBankTransferFinancialAddressIban : StripeEntity<FundingInstructionsBankTransferFinancialAddressIban>
     {
         [JsonProperty("account_holder_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_address")]
+#endif
         public Address AccountHolderAddress { get; set; }
 
         /// <summary>
         /// The name of the person or business that owns the bank account.
         /// </summary>
         [JsonProperty("account_holder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_name")]
+#endif
         public string AccountHolderName { get; set; }
 
         [JsonProperty("bank_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_address")]
+#endif
         public Address BankAddress { get; set; }
 
         /// <summary>
         /// The BIC/SWIFT code of the account.
         /// </summary>
         [JsonProperty("bic")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bic")]
+#endif
         public string Bic { get; set; }
 
         /// <summary>
@@ -28,12 +43,18 @@ public class FundingInstructionsBankTransferFinancialAddressIban : StripeEntity<
         /// 3166-1 alpha-2</a>).
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
         /// The IBAN of the account.
         /// </summary>
         [JsonProperty("iban")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iban")]
+#endif
         public string Iban { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransferFinancialAddressSortCode.cs b/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransferFinancialAddressSortCode.cs
index df785e7005..96a696e295 100644
--- a/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransferFinancialAddressSortCode.cs
+++ b/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransferFinancialAddressSortCode.cs
@@ -2,31 +2,49 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FundingInstructionsBankTransferFinancialAddressSortCode : StripeEntity<FundingInstructionsBankTransferFinancialAddressSortCode>
     {
         [JsonProperty("account_holder_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_address")]
+#endif
         public Address AccountHolderAddress { get; set; }
 
         /// <summary>
         /// The name of the person or business that owns the bank account.
         /// </summary>
         [JsonProperty("account_holder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_name")]
+#endif
         public string AccountHolderName { get; set; }
 
         /// <summary>
         /// The account number.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         [JsonProperty("bank_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_address")]
+#endif
         public Address BankAddress { get; set; }
 
         /// <summary>
         /// The six-digit sort code.
         /// </summary>
         [JsonProperty("sort_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sort_code")]
+#endif
         public string SortCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransferFinancialAddressSpei.cs b/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransferFinancialAddressSpei.cs
index 97a2e41a12..cca70fbd36 100644
--- a/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransferFinancialAddressSpei.cs
+++ b/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransferFinancialAddressSpei.cs
@@ -2,37 +2,58 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FundingInstructionsBankTransferFinancialAddressSpei : StripeEntity<FundingInstructionsBankTransferFinancialAddressSpei>
     {
         [JsonProperty("account_holder_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_address")]
+#endif
         public Address AccountHolderAddress { get; set; }
 
         /// <summary>
         /// The account holder name.
         /// </summary>
         [JsonProperty("account_holder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_name")]
+#endif
         public string AccountHolderName { get; set; }
 
         [JsonProperty("bank_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_address")]
+#endif
         public Address BankAddress { get; set; }
 
         /// <summary>
         /// The three-digit bank code.
         /// </summary>
         [JsonProperty("bank_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_code")]
+#endif
         public string BankCode { get; set; }
 
         /// <summary>
         /// The short banking institution name.
         /// </summary>
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         /// <summary>
         /// The CLABE number.
         /// </summary>
         [JsonProperty("clabe")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("clabe")]
+#endif
         public string Clabe { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransferFinancialAddressSwift.cs b/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransferFinancialAddressSwift.cs
index d2006eda34..f8c4c7819a 100644
--- a/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransferFinancialAddressSwift.cs
+++ b/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransferFinancialAddressSwift.cs
@@ -2,43 +2,67 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FundingInstructionsBankTransferFinancialAddressSwift : StripeEntity<FundingInstructionsBankTransferFinancialAddressSwift>
     {
         [JsonProperty("account_holder_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_address")]
+#endif
         public Address AccountHolderAddress { get; set; }
 
         /// <summary>
         /// The account holder name.
         /// </summary>
         [JsonProperty("account_holder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_name")]
+#endif
         public string AccountHolderName { get; set; }
 
         /// <summary>
         /// The account number.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
         /// The account type.
         /// </summary>
         [JsonProperty("account_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_type")]
+#endif
         public string AccountType { get; set; }
 
         [JsonProperty("bank_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_address")]
+#endif
         public Address BankAddress { get; set; }
 
         /// <summary>
         /// The bank name.
         /// </summary>
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         /// <summary>
         /// The SWIFT code.
         /// </summary>
         [JsonProperty("swift_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("swift_code")]
+#endif
         public string SwiftCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransferFinancialAddressZengin.cs b/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransferFinancialAddressZengin.cs
index 7f7acf2dbe..0d4c467d46 100644
--- a/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransferFinancialAddressZengin.cs
+++ b/src/Stripe.net/Entities/FundingInstructions/FundingInstructionsBankTransferFinancialAddressZengin.cs
@@ -2,55 +2,85 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FundingInstructionsBankTransferFinancialAddressZengin : StripeEntity<FundingInstructionsBankTransferFinancialAddressZengin>
     {
         [JsonProperty("account_holder_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_address")]
+#endif
         public Address AccountHolderAddress { get; set; }
 
         /// <summary>
         /// The account holder name.
         /// </summary>
         [JsonProperty("account_holder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_name")]
+#endif
         public string AccountHolderName { get; set; }
 
         /// <summary>
         /// The account number.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
         /// The bank account type. In Japan, this can only be <c>futsu</c> or <c>toza</c>.
         /// </summary>
         [JsonProperty("account_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_type")]
+#endif
         public string AccountType { get; set; }
 
         [JsonProperty("bank_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_address")]
+#endif
         public Address BankAddress { get; set; }
 
         /// <summary>
         /// The bank code of the account.
         /// </summary>
         [JsonProperty("bank_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_code")]
+#endif
         public string BankCode { get; set; }
 
         /// <summary>
         /// The bank name of the account.
         /// </summary>
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         /// <summary>
         /// The branch code of the account.
         /// </summary>
         [JsonProperty("branch_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("branch_code")]
+#endif
         public string BranchCode { get; set; }
 
         /// <summary>
         /// The branch name of the account.
         /// </summary>
         [JsonProperty("branch_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("branch_name")]
+#endif
         public string BranchName { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReport.cs b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReport.cs
index 44ef2c2f28..c0e0cae7c6 100644
--- a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReport.cs
+++ b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReport.cs
@@ -4,6 +4,9 @@ namespace Stripe.Identity
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A VerificationReport is the result of an attempt to collect and verify data from a user.
@@ -29,12 +32,18 @@ public class VerificationReport : StripeEntity<VerificationReport>, IHasId, IHas
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -42,6 +51,9 @@ public class VerificationReport : StripeEntity<VerificationReport>, IHasId, IHas
         /// and can be used to reconcile this verification with your internal systems.
         /// </summary>
         [JsonProperty("client_reference_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("client_reference_id")]
+#endif
         public string ClientReferenceId { get; set; }
 
         /// <summary>
@@ -49,24 +61,37 @@ public class VerificationReport : StripeEntity<VerificationReport>, IHasId, IHas
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// Result from a document check.
         /// </summary>
         [JsonProperty("document")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("document")]
+#endif
         public VerificationReportDocument Document { get; set; }
 
         /// <summary>
         /// Result from a email check.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public VerificationReportEmail Email { get; set; }
 
         /// <summary>
         /// Result from an id_number check.
         /// </summary>
         [JsonProperty("id_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id_number")]
+#endif
         public VerificationReportIdNumber IdNumber { get; set; }
 
         /// <summary>
@@ -74,21 +99,33 @@ public class VerificationReport : StripeEntity<VerificationReport>, IHasId, IHas
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         [JsonProperty("options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("options")]
+#endif
         public VerificationReportOptions Options { get; set; }
 
         /// <summary>
         /// Result from a phone check.
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public VerificationReportPhone Phone { get; set; }
 
         /// <summary>
         /// Result from a selfie check.
         /// </summary>
         [JsonProperty("selfie")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("selfie")]
+#endif
         public VerificationReportSelfie Selfie { get; set; }
 
         /// <summary>
@@ -96,18 +133,27 @@ public class VerificationReport : StripeEntity<VerificationReport>, IHasId, IHas
         /// One of: <c>document</c>, <c>id_number</c>, or <c>verification_flow</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
         /// The configuration token of a verification flow from the dashboard.
         /// </summary>
         [JsonProperty("verification_flow")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification_flow")]
+#endif
         public string VerificationFlow { get; set; }
 
         /// <summary>
         /// ID of the VerificationSession that created this report.
         /// </summary>
         [JsonProperty("verification_session")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification_session")]
+#endif
         public string VerificationSession { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportDocument.cs b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportDocument.cs
index 965cbdcf1c..70def1394a 100644
--- a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportDocument.cs
+++ b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportDocument.cs
@@ -3,6 +3,9 @@ namespace Stripe.Identity
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationReportDocument : StripeEntity<VerificationReportDocument>
     {
@@ -10,24 +13,36 @@ public class VerificationReportDocument : StripeEntity<VerificationReportDocumen
         /// Address as it appears in the document.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public Address Address { get; set; }
 
         /// <summary>
         /// Date of birth as it appears in the document.
         /// </summary>
         [JsonProperty("dob")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dob")]
+#endif
         public VerificationReportDocumentDob Dob { get; set; }
 
         /// <summary>
         /// Details on the verification error. Present when status is <c>unverified</c>.
         /// </summary>
         [JsonProperty("error")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("error")]
+#endif
         public VerificationReportDocumentError Error { get; set; }
 
         /// <summary>
         /// Expiration date of the document.
         /// </summary>
         [JsonProperty("expiration_date")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expiration_date")]
+#endif
         public VerificationReportDocumentExpirationDate ExpirationDate { get; set; }
 
         /// <summary>
@@ -35,36 +50,54 @@ public class VerificationReportDocument : StripeEntity<VerificationReportDocumen
         /// this document.
         /// </summary>
         [JsonProperty("files")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("files")]
+#endif
         public List<string> Files { get; set; }
 
         /// <summary>
         /// First name as it appears in the document.
         /// </summary>
         [JsonProperty("first_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_name")]
+#endif
         public string FirstName { get; set; }
 
         /// <summary>
         /// Issued date of the document.
         /// </summary>
         [JsonProperty("issued_date")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issued_date")]
+#endif
         public VerificationReportDocumentIssuedDate IssuedDate { get; set; }
 
         /// <summary>
         /// Issuing country of the document.
         /// </summary>
         [JsonProperty("issuing_country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuing_country")]
+#endif
         public string IssuingCountry { get; set; }
 
         /// <summary>
         /// Last name as it appears in the document.
         /// </summary>
         [JsonProperty("last_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_name")]
+#endif
         public string LastName { get; set; }
 
         /// <summary>
         /// Document ID number.
         /// </summary>
         [JsonProperty("number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("number")]
+#endif
         public string Number { get; set; }
 
         /// <summary>
@@ -72,6 +105,9 @@ public class VerificationReportDocument : StripeEntity<VerificationReportDocumen
         /// One of: <c>unverified</c>, or <c>verified</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -79,6 +115,9 @@ public class VerificationReportDocument : StripeEntity<VerificationReportDocumen
         /// One of: <c>driving_license</c>, <c>id_card</c>, or <c>passport</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportDocumentDob.cs b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportDocumentDob.cs
index 7c225abb82..5da700210d 100644
--- a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportDocumentDob.cs
+++ b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportDocumentDob.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Identity
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationReportDocumentDob : StripeEntity<VerificationReportDocumentDob>
     {
@@ -9,18 +12,27 @@ public class VerificationReportDocumentDob : StripeEntity<VerificationReportDocu
         /// Numerical day between 1 and 31.
         /// </summary>
         [JsonProperty("day")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("day")]
+#endif
         public long? Day { get; set; }
 
         /// <summary>
         /// Numerical month between 1 and 12.
         /// </summary>
         [JsonProperty("month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("month")]
+#endif
         public long? Month { get; set; }
 
         /// <summary>
         /// The four-digit year.
         /// </summary>
         [JsonProperty("year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("year")]
+#endif
         public long? Year { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportDocumentError.cs b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportDocumentError.cs
index a96ad137a7..54763ad56b 100644
--- a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportDocumentError.cs
+++ b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportDocumentError.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Identity
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationReportDocumentError : StripeEntity<VerificationReportDocumentError>
     {
@@ -11,6 +14,9 @@ public class VerificationReportDocumentError : StripeEntity<VerificationReportDo
         /// <c>document_unverified_other</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class VerificationReportDocumentError : StripeEntity<VerificationReportDo
         /// to your users.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportDocumentExpirationDate.cs b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportDocumentExpirationDate.cs
index 835ce6897e..796fbcfd89 100644
--- a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportDocumentExpirationDate.cs
+++ b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportDocumentExpirationDate.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Identity
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationReportDocumentExpirationDate : StripeEntity<VerificationReportDocumentExpirationDate>
     {
@@ -9,18 +12,27 @@ public class VerificationReportDocumentExpirationDate : StripeEntity<Verificatio
         /// Numerical day between 1 and 31.
         /// </summary>
         [JsonProperty("day")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("day")]
+#endif
         public long? Day { get; set; }
 
         /// <summary>
         /// Numerical month between 1 and 12.
         /// </summary>
         [JsonProperty("month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("month")]
+#endif
         public long? Month { get; set; }
 
         /// <summary>
         /// The four-digit year.
         /// </summary>
         [JsonProperty("year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("year")]
+#endif
         public long? Year { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportDocumentIssuedDate.cs b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportDocumentIssuedDate.cs
index 99fcc21a3d..f7c5355543 100644
--- a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportDocumentIssuedDate.cs
+++ b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportDocumentIssuedDate.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Identity
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationReportDocumentIssuedDate : StripeEntity<VerificationReportDocumentIssuedDate>
     {
@@ -9,18 +12,27 @@ public class VerificationReportDocumentIssuedDate : StripeEntity<VerificationRep
         /// Numerical day between 1 and 31.
         /// </summary>
         [JsonProperty("day")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("day")]
+#endif
         public long? Day { get; set; }
 
         /// <summary>
         /// Numerical month between 1 and 12.
         /// </summary>
         [JsonProperty("month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("month")]
+#endif
         public long? Month { get; set; }
 
         /// <summary>
         /// The four-digit year.
         /// </summary>
         [JsonProperty("year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("year")]
+#endif
         public long? Year { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportEmail.cs b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportEmail.cs
index 2ea8ea3bb5..a90ecc05f6 100644
--- a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportEmail.cs
+++ b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportEmail.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Identity
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationReportEmail : StripeEntity<VerificationReportEmail>
     {
@@ -9,12 +12,18 @@ public class VerificationReportEmail : StripeEntity<VerificationReportEmail>
         /// Email to be verified.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// Details on the verification error. Present when status is <c>unverified</c>.
         /// </summary>
         [JsonProperty("error")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("error")]
+#endif
         public VerificationReportEmailError Error { get; set; }
 
         /// <summary>
@@ -22,6 +31,9 @@ public class VerificationReportEmail : StripeEntity<VerificationReportEmail>
         /// One of: <c>unverified</c>, or <c>verified</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportEmailError.cs b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportEmailError.cs
index 74ad000138..6614149207 100644
--- a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportEmailError.cs
+++ b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportEmailError.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Identity
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationReportEmailError : StripeEntity<VerificationReportEmailError>
     {
@@ -10,6 +13,9 @@ public class VerificationReportEmailError : StripeEntity<VerificationReportEmail
         /// One of: <c>email_unverified_other</c>, or <c>email_verification_declined</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class VerificationReportEmailError : StripeEntity<VerificationReportEmail
         /// to your users.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportIdNumber.cs b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportIdNumber.cs
index e359ef79c2..a684640a37 100644
--- a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportIdNumber.cs
+++ b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportIdNumber.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Identity
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationReportIdNumber : StripeEntity<VerificationReportIdNumber>
     {
@@ -9,18 +12,27 @@ public class VerificationReportIdNumber : StripeEntity<VerificationReportIdNumbe
         /// Date of birth.
         /// </summary>
         [JsonProperty("dob")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dob")]
+#endif
         public VerificationReportIdNumberDob Dob { get; set; }
 
         /// <summary>
         /// Details on the verification error. Present when status is <c>unverified</c>.
         /// </summary>
         [JsonProperty("error")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("error")]
+#endif
         public VerificationReportIdNumberError Error { get; set; }
 
         /// <summary>
         /// First name.
         /// </summary>
         [JsonProperty("first_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_name")]
+#endif
         public string FirstName { get; set; }
 
         /// <summary>
@@ -28,6 +40,9 @@ public class VerificationReportIdNumber : StripeEntity<VerificationReportIdNumbe
         /// present.
         /// </summary>
         [JsonProperty("id_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id_number")]
+#endif
         public string IdNumber { get; set; }
 
         /// <summary>
@@ -35,12 +50,18 @@ public class VerificationReportIdNumber : StripeEntity<VerificationReportIdNumbe
         /// One of: <c>br_cpf</c>, <c>sg_nric</c>, or <c>us_ssn</c>.
         /// </summary>
         [JsonProperty("id_number_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id_number_type")]
+#endif
         public string IdNumberType { get; set; }
 
         /// <summary>
         /// Last name.
         /// </summary>
         [JsonProperty("last_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_name")]
+#endif
         public string LastName { get; set; }
 
         /// <summary>
@@ -48,6 +69,9 @@ public class VerificationReportIdNumber : StripeEntity<VerificationReportIdNumbe
         /// One of: <c>unverified</c>, or <c>verified</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportIdNumberDob.cs b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportIdNumberDob.cs
index fcf6d8d613..6240666b7a 100644
--- a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportIdNumberDob.cs
+++ b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportIdNumberDob.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Identity
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationReportIdNumberDob : StripeEntity<VerificationReportIdNumberDob>
     {
@@ -9,18 +12,27 @@ public class VerificationReportIdNumberDob : StripeEntity<VerificationReportIdNu
         /// Numerical day between 1 and 31.
         /// </summary>
         [JsonProperty("day")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("day")]
+#endif
         public long? Day { get; set; }
 
         /// <summary>
         /// Numerical month between 1 and 12.
         /// </summary>
         [JsonProperty("month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("month")]
+#endif
         public long? Month { get; set; }
 
         /// <summary>
         /// The four-digit year.
         /// </summary>
         [JsonProperty("year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("year")]
+#endif
         public long? Year { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportIdNumberError.cs b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportIdNumberError.cs
index 495f3ab4b1..aac8d3e955 100644
--- a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportIdNumberError.cs
+++ b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportIdNumberError.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Identity
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationReportIdNumberError : StripeEntity<VerificationReportIdNumberError>
     {
@@ -11,6 +14,9 @@ public class VerificationReportIdNumberError : StripeEntity<VerificationReportId
         /// <c>id_number_unverified_other</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class VerificationReportIdNumberError : StripeEntity<VerificationReportId
         /// to your users.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportOptions.cs b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportOptions.cs
index 76b416336d..cd2d8662ac 100644
--- a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportOptions.cs
+++ b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportOptions.cs
@@ -2,13 +2,22 @@
 namespace Stripe.Identity
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationReportOptions : StripeEntity<VerificationReportOptions>
     {
         [JsonProperty("document")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("document")]
+#endif
         public VerificationReportOptionsDocument Document { get; set; }
 
         [JsonProperty("id_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id_number")]
+#endif
         public VerificationReportOptionsIdNumber IdNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportOptionsDocument.cs b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportOptionsDocument.cs
index 7a5507f110..2530303713 100644
--- a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportOptionsDocument.cs
+++ b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportOptionsDocument.cs
@@ -3,6 +3,9 @@ namespace Stripe.Identity
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationReportOptionsDocument : StripeEntity<VerificationReportOptionsDocument>
     {
@@ -13,6 +16,9 @@ public class VerificationReportOptionsDocument : StripeEntity<VerificationReport
         /// One of: <c>driving_license</c>, <c>id_card</c>, or <c>passport</c>.
         /// </summary>
         [JsonProperty("allowed_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allowed_types")]
+#endif
         public List<string> AllowedTypes { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class VerificationReportOptionsDocument : StripeEntity<VerificationReport
         /// check</a> with the document’s extracted name and date of birth.
         /// </summary>
         [JsonProperty("require_id_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("require_id_number")]
+#endif
         public bool RequireIdNumber { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class VerificationReportOptionsDocument : StripeEntity<VerificationReport
         /// camera.
         /// </summary>
         [JsonProperty("require_live_capture")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("require_live_capture")]
+#endif
         public bool RequireLiveCapture { get; set; }
 
         /// <summary>
@@ -37,6 +49,9 @@ public class VerificationReportOptionsDocument : StripeEntity<VerificationReport
         /// href="https://stripe.com/docs/identity/selfie">Learn more</a>.
         /// </summary>
         [JsonProperty("require_matching_selfie")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("require_matching_selfie")]
+#endif
         public bool RequireMatchingSelfie { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportPhone.cs b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportPhone.cs
index b456140284..ce22dd4498 100644
--- a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportPhone.cs
+++ b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportPhone.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Identity
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationReportPhone : StripeEntity<VerificationReportPhone>
     {
@@ -9,12 +12,18 @@ public class VerificationReportPhone : StripeEntity<VerificationReportPhone>
         /// Details on the verification error. Present when status is <c>unverified</c>.
         /// </summary>
         [JsonProperty("error")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("error")]
+#endif
         public VerificationReportPhoneError Error { get; set; }
 
         /// <summary>
         /// Phone to be verified.
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
 
         /// <summary>
@@ -22,6 +31,9 @@ public class VerificationReportPhone : StripeEntity<VerificationReportPhone>
         /// One of: <c>unverified</c>, or <c>verified</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportPhoneError.cs b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportPhoneError.cs
index e3c31ed296..bef6992f13 100644
--- a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportPhoneError.cs
+++ b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportPhoneError.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Identity
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationReportPhoneError : StripeEntity<VerificationReportPhoneError>
     {
@@ -10,6 +13,9 @@ public class VerificationReportPhoneError : StripeEntity<VerificationReportPhone
         /// One of: <c>phone_unverified_other</c>, or <c>phone_verification_declined</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class VerificationReportPhoneError : StripeEntity<VerificationReportPhone
         /// to your users.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportSelfie.cs b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportSelfie.cs
index 6f76b93cd2..0a2d375d68 100644
--- a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportSelfie.cs
+++ b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportSelfie.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Identity
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationReportSelfie : StripeEntity<VerificationReportSelfie>
     {
@@ -10,12 +13,18 @@ public class VerificationReportSelfie : StripeEntity<VerificationReportSelfie>
         /// identity document used in this check.
         /// </summary>
         [JsonProperty("document")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("document")]
+#endif
         public string Document { get; set; }
 
         /// <summary>
         /// Details on the verification error. Present when status is <c>unverified</c>.
         /// </summary>
         [JsonProperty("error")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("error")]
+#endif
         public VerificationReportSelfieError Error { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class VerificationReportSelfie : StripeEntity<VerificationReportSelfie>
         /// selfie used in this check.
         /// </summary>
         [JsonProperty("selfie")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("selfie")]
+#endif
         public string Selfie { get; set; }
 
         /// <summary>
@@ -30,6 +42,9 @@ public class VerificationReportSelfie : StripeEntity<VerificationReportSelfie>
         /// One of: <c>unverified</c>, or <c>verified</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportSelfieError.cs b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportSelfieError.cs
index 21b2210435..8dc277a491 100644
--- a/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportSelfieError.cs
+++ b/src/Stripe.net/Entities/Identity/VerificationReports/VerificationReportSelfieError.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Identity
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationReportSelfieError : StripeEntity<VerificationReportSelfieError>
     {
@@ -11,6 +14,9 @@ public class VerificationReportSelfieError : StripeEntity<VerificationReportSelf
         /// <c>selfie_manipulated</c>, or <c>selfie_unverified_other</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class VerificationReportSelfieError : StripeEntity<VerificationReportSelf
         /// to your users.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSession.cs b/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSession.cs
index 6082800239..9139b15120 100644
--- a/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSession.cs
+++ b/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSession.cs
@@ -5,6 +5,9 @@ namespace Stripe.Identity
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A VerificationSession guides you through the process of collecting and verifying the
@@ -22,18 +25,27 @@ namespace Stripe.Identity
     /// Related guide: <a href="https://stripe.com/docs/identity/verification-sessions">The
     /// Verification Sessions API</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class VerificationSession : StripeEntity<VerificationSession>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -41,6 +53,9 @@ public class VerificationSession : StripeEntity<VerificationSession>, IHasId, IH
         /// and can be used to reconcile this verification with your internal systems.
         /// </summary>
         [JsonProperty("client_reference_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("client_reference_id")]
+#endif
         public string ClientReferenceId { get; set; }
 
         /// <summary>
@@ -54,6 +69,9 @@ public class VerificationSession : StripeEntity<VerificationSession>, IHasId, IH
         /// client secret to the frontend</a> to learn more.
         /// </summary>
         [JsonProperty("client_secret")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("client_secret")]
+#endif
         public string ClientSecret { get; set; }
 
         /// <summary>
@@ -61,6 +79,10 @@ public class VerificationSession : StripeEntity<VerificationSession>, IHasId, IH
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -68,6 +90,9 @@ public class VerificationSession : StripeEntity<VerificationSession>, IHasId, IH
         /// verification.
         /// </summary>
         [JsonProperty("last_error")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_error")]
+#endif
         public VerificationSessionLastError LastError { get; set; }
 
         #region Expandable LastVerificationReport
@@ -79,6 +104,9 @@ public class VerificationSession : StripeEntity<VerificationSession>, IHasId, IH
         /// accessing detailed verification results.</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string LastVerificationReportId
         {
             get => this.InternalLastVerificationReport?.Id;
@@ -94,6 +122,9 @@ public string LastVerificationReportId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public VerificationReport LastVerificationReport
         {
             get => this.InternalLastVerificationReport?.ExpandedObject;
@@ -102,6 +133,10 @@ public VerificationReport LastVerificationReport
 
         [JsonProperty("last_verification_report")]
         [JsonConverter(typeof(ExpandableFieldConverter<VerificationReport>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_verification_report")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<VerificationReport>))]
+#endif
         internal ExpandableField<VerificationReport> InternalLastVerificationReport { get; set; }
         #endregion
 
@@ -110,6 +145,9 @@ public VerificationReport LastVerificationReport
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -118,18 +156,27 @@ public VerificationReport LastVerificationReport
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// A set of options for the session’s verification checks.
         /// </summary>
         [JsonProperty("options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("options")]
+#endif
         public VerificationSessionOptions Options { get; set; }
 
         /// <summary>
         /// Details provided about the user being verified. These details may be shown to the user.
         /// </summary>
         [JsonProperty("provided_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("provided_details")]
+#endif
         public VerificationSessionProvidedDetails ProvidedDetails { get; set; }
 
         /// <summary>
@@ -137,12 +184,18 @@ public VerificationReport LastVerificationReport
         /// redacted, this field will be null.
         /// </summary>
         [JsonProperty("redaction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("redaction")]
+#endif
         public VerificationSessionRedaction Redaction { get; set; }
 
         /// <summary>
         /// Token referencing a Customer resource.
         /// </summary>
         [JsonProperty("related_customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("related_customer")]
+#endif
         public string RelatedCustomer { get; set; }
 
         /// <summary>
@@ -152,6 +205,9 @@ public VerificationReport LastVerificationReport
         /// One of: <c>canceled</c>, <c>processing</c>, <c>requires_input</c>, or <c>verified</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -160,6 +216,9 @@ public VerificationReport LastVerificationReport
         /// One of: <c>document</c>, <c>id_number</c>, or <c>verification_flow</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
@@ -171,18 +230,27 @@ public VerificationReport LastVerificationReport
         /// identity documents</a> to learn how to redirect users to Stripe.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
 
         /// <summary>
         /// The configuration token of a verification flow from the dashboard.
         /// </summary>
         [JsonProperty("verification_flow")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification_flow")]
+#endif
         public string VerificationFlow { get; set; }
 
         /// <summary>
         /// The user’s verified data.
         /// </summary>
         [JsonProperty("verified_outputs")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verified_outputs")]
+#endif
         public VerificationSessionVerifiedOutputs VerifiedOutputs { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionLastError.cs b/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionLastError.cs
index 4070f7bdf6..7f5f230307 100644
--- a/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionLastError.cs
+++ b/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionLastError.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Identity
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationSessionLastError : StripeEntity<VerificationSessionLastError>
     {
@@ -19,12 +22,18 @@ public class VerificationSessionLastError : StripeEntity<VerificationSessionLast
         /// or <c>under_supported_age</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
         /// A message that explains the reason for verification or user-session failure.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionOptions.cs b/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionOptions.cs
index ef3a92c965..f34588e9f7 100644
--- a/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionOptions.cs
+++ b/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionOptions.cs
@@ -2,19 +2,34 @@
 namespace Stripe.Identity
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationSessionOptions : StripeEntity<VerificationSessionOptions>
     {
         [JsonProperty("document")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("document")]
+#endif
         public VerificationSessionOptionsDocument Document { get; set; }
 
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public VerificationSessionOptionsEmail Email { get; set; }
 
         [JsonProperty("id_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id_number")]
+#endif
         public VerificationSessionOptionsIdNumber IdNumber { get; set; }
 
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public VerificationSessionOptionsPhone Phone { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionOptionsDocument.cs b/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionOptionsDocument.cs
index 13b2c2f9cb..45a03ff994 100644
--- a/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionOptionsDocument.cs
+++ b/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionOptionsDocument.cs
@@ -3,6 +3,9 @@ namespace Stripe.Identity
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationSessionOptionsDocument : StripeEntity<VerificationSessionOptionsDocument>
     {
@@ -13,6 +16,9 @@ public class VerificationSessionOptionsDocument : StripeEntity<VerificationSessi
         /// One of: <c>driving_license</c>, <c>id_card</c>, or <c>passport</c>.
         /// </summary>
         [JsonProperty("allowed_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allowed_types")]
+#endif
         public List<string> AllowedTypes { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class VerificationSessionOptionsDocument : StripeEntity<VerificationSessi
         /// check</a> with the document’s extracted name and date of birth.
         /// </summary>
         [JsonProperty("require_id_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("require_id_number")]
+#endif
         public bool RequireIdNumber { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class VerificationSessionOptionsDocument : StripeEntity<VerificationSessi
         /// camera.
         /// </summary>
         [JsonProperty("require_live_capture")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("require_live_capture")]
+#endif
         public bool RequireLiveCapture { get; set; }
 
         /// <summary>
@@ -37,6 +49,9 @@ public class VerificationSessionOptionsDocument : StripeEntity<VerificationSessi
         /// href="https://stripe.com/docs/identity/selfie">Learn more</a>.
         /// </summary>
         [JsonProperty("require_matching_selfie")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("require_matching_selfie")]
+#endif
         public bool RequireMatchingSelfie { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionOptionsEmail.cs b/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionOptionsEmail.cs
index 5af0950a0a..e158d276b9 100644
--- a/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionOptionsEmail.cs
+++ b/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionOptionsEmail.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Identity
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationSessionOptionsEmail : StripeEntity<VerificationSessionOptionsEmail>
     {
@@ -9,6 +12,9 @@ public class VerificationSessionOptionsEmail : StripeEntity<VerificationSessionO
         /// Request one time password verification of <c>provided_details.email</c>.
         /// </summary>
         [JsonProperty("require_verification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("require_verification")]
+#endif
         public bool RequireVerification { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionOptionsPhone.cs b/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionOptionsPhone.cs
index 7314905141..b60cf6c22c 100644
--- a/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionOptionsPhone.cs
+++ b/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionOptionsPhone.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Identity
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationSessionOptionsPhone : StripeEntity<VerificationSessionOptionsPhone>
     {
@@ -9,6 +12,9 @@ public class VerificationSessionOptionsPhone : StripeEntity<VerificationSessionO
         /// Request one time password verification of <c>provided_details.phone</c>.
         /// </summary>
         [JsonProperty("require_verification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("require_verification")]
+#endif
         public bool RequireVerification { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionProvidedDetails.cs b/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionProvidedDetails.cs
index 4a77de95de..589c81ac34 100644
--- a/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionProvidedDetails.cs
+++ b/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionProvidedDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Identity
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationSessionProvidedDetails : StripeEntity<VerificationSessionProvidedDetails>
     {
@@ -9,12 +12,18 @@ public class VerificationSessionProvidedDetails : StripeEntity<VerificationSessi
         /// Email of user being verified.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// Phone number of user being verified.
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionRedaction.cs b/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionRedaction.cs
index 1b359b5ac6..f3571802bd 100644
--- a/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionRedaction.cs
+++ b/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionRedaction.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Identity
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationSessionRedaction : StripeEntity<VerificationSessionRedaction>
     {
@@ -10,6 +13,9 @@ public class VerificationSessionRedaction : StripeEntity<VerificationSessionReda
         /// One of: <c>processing</c>, or <c>redacted</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionVerifiedOutputs.cs b/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionVerifiedOutputs.cs
index 97f6f11786..52bae6219c 100644
--- a/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionVerifiedOutputs.cs
+++ b/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionVerifiedOutputs.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Identity
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationSessionVerifiedOutputs : StripeEntity<VerificationSessionVerifiedOutputs>
     {
@@ -9,30 +12,45 @@ public class VerificationSessionVerifiedOutputs : StripeEntity<VerificationSessi
         /// The user's verified address.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public Address Address { get; set; }
 
         /// <summary>
         /// The user’s verified date of birth.
         /// </summary>
         [JsonProperty("dob")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dob")]
+#endif
         public VerificationSessionVerifiedOutputsDob Dob { get; set; }
 
         /// <summary>
         /// The user's verified email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// The user's verified first name.
         /// </summary>
         [JsonProperty("first_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_name")]
+#endif
         public string FirstName { get; set; }
 
         /// <summary>
         /// The user's verified id number.
         /// </summary>
         [JsonProperty("id_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id_number")]
+#endif
         public string IdNumber { get; set; }
 
         /// <summary>
@@ -40,18 +58,27 @@ public class VerificationSessionVerifiedOutputs : StripeEntity<VerificationSessi
         /// One of: <c>br_cpf</c>, <c>sg_nric</c>, or <c>us_ssn</c>.
         /// </summary>
         [JsonProperty("id_number_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id_number_type")]
+#endif
         public string IdNumberType { get; set; }
 
         /// <summary>
         /// The user's verified last name.
         /// </summary>
         [JsonProperty("last_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_name")]
+#endif
         public string LastName { get; set; }
 
         /// <summary>
         /// The user's verified phone number.
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionVerifiedOutputsDob.cs b/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionVerifiedOutputsDob.cs
index 80904bdb04..01aa338fe2 100644
--- a/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionVerifiedOutputsDob.cs
+++ b/src/Stripe.net/Entities/Identity/VerificationSessions/VerificationSessionVerifiedOutputsDob.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Identity
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationSessionVerifiedOutputsDob : StripeEntity<VerificationSessionVerifiedOutputsDob>
     {
@@ -9,18 +12,27 @@ public class VerificationSessionVerifiedOutputsDob : StripeEntity<VerificationSe
         /// Numerical day between 1 and 31.
         /// </summary>
         [JsonProperty("day")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("day")]
+#endif
         public long? Day { get; set; }
 
         /// <summary>
         /// Numerical month between 1 and 12.
         /// </summary>
         [JsonProperty("month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("month")]
+#endif
         public long? Month { get; set; }
 
         /// <summary>
         /// The four-digit year.
         /// </summary>
         [JsonProperty("year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("year")]
+#endif
         public long? Year { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/InvoiceItems/InvoiceItem.cs b/src/Stripe.net/Entities/InvoiceItems/InvoiceItem.cs
index 0f9fff04db..352bf38368 100644
--- a/src/Stripe.net/Entities/InvoiceItems/InvoiceItem.cs
+++ b/src/Stripe.net/Entities/InvoiceItems/InvoiceItem.cs
@@ -6,6 +6,9 @@ namespace Stripe
     using System.Linq;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Invoice Items represent the component lines of an <a
@@ -28,18 +31,27 @@ namespace Stripe
     /// href="https://stripe.com/docs/billing/invoices/subscription#adding-upcoming-invoice-items">Subscription
     /// Invoices</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class InvoiceItem : StripeEntity<InvoiceItem>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -47,6 +59,9 @@ public class InvoiceItem : StripeEntity<InvoiceItem>, IHasId, IHasMetadata, IHas
         /// equal to <c>unit_amount * quantity</c>.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -55,6 +70,9 @@ public class InvoiceItem : StripeEntity<InvoiceItem>, IHasId, IHasMetadata, IHas
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         #region Expandable Customer
@@ -64,6 +82,9 @@ public class InvoiceItem : StripeEntity<InvoiceItem>, IHasId, IHasMetadata, IHas
         /// The ID of the customer who will be billed when this invoice item is billed.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerId
         {
             get => this.InternalCustomer?.Id;
@@ -77,6 +98,9 @@ public string CustomerId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Customer Customer
         {
             get => this.InternalCustomer?.ExpandedObject;
@@ -85,6 +109,10 @@ public Customer Customer
 
         [JsonProperty("customer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Customer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Customer>))]
+#endif
         internal ExpandableField<Customer> InternalCustomer { get; set; }
         #endregion
 
@@ -93,24 +121,38 @@ public Customer Customer
         /// </summary>
         [JsonProperty("date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Date { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// Whether this object is deleted or not.
         /// </summary>
         [JsonProperty("deleted", NullValueHandling = NullValueHandling.Ignore)]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+        [STJS.JsonIgnore(Condition = STJS.JsonIgnoreCondition.WhenWritingNull)]
+#endif
         public bool? Deleted { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// If true, discounts will apply to this invoice item. Always false for prorations.
         /// </summary>
         [JsonProperty("discountable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discountable")]
+#endif
         public bool Discountable { get; set; }
 
         #region Expandable Discounts
@@ -121,6 +163,9 @@ public Customer Customer
         /// discounts. Use <c>expand[]=discounts</c> to expand each discount.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public List<string> DiscountIds
         {
             get => this.InternalDiscounts?.Select((x) => x.Id).ToList();
@@ -135,6 +180,9 @@ public List<string> DiscountIds
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public List<Discount> Discounts
         {
             get => this.InternalDiscounts?.Select((x) => x.ExpandedObject).ToList();
@@ -142,6 +190,9 @@ public List<Discount> Discounts
         }
 
         [JsonProperty("discounts", ItemConverterType = typeof(ExpandableFieldConverter<Discount>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         internal List<ExpandableField<Discount>> InternalDiscounts { get; set; }
         #endregion
 
@@ -152,6 +203,9 @@ public List<Discount> Discounts
         /// The ID of the invoice this invoice item belongs to.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string InvoiceId
         {
             get => this.InternalInvoice?.Id;
@@ -165,6 +219,9 @@ public string InvoiceId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Invoice Invoice
         {
             get => this.InternalInvoice?.ExpandedObject;
@@ -173,6 +230,10 @@ public Invoice Invoice
 
         [JsonProperty("invoice")]
         [JsonConverter(typeof(ExpandableFieldConverter<Invoice>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Invoice>))]
+#endif
         internal ExpandableField<Invoice> InternalInvoice { get; set; }
         #endregion
 
@@ -181,6 +242,9 @@ public Invoice Invoice
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -189,9 +253,15 @@ public Invoice Invoice
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         [JsonProperty("period")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("period")]
+#endif
         public InvoiceItemPeriod Period { get; set; }
 
         /// <summary>
@@ -199,12 +269,18 @@ public Invoice Invoice
         /// computed for.
         /// </summary>
         [JsonProperty("plan")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("plan")]
+#endif
         public Plan Plan { get; set; }
 
         /// <summary>
         /// The price of the invoice item.
         /// </summary>
         [JsonProperty("price")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price")]
+#endif
         public Price Price { get; set; }
 
         /// <summary>
@@ -212,6 +288,9 @@ public Invoice Invoice
         /// customer switched plans.
         /// </summary>
         [JsonProperty("proration")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("proration")]
+#endif
         public bool Proration { get; set; }
 
         /// <summary>
@@ -219,6 +298,9 @@ public Invoice Invoice
         /// of the subscription that the proration was computed for.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long Quantity { get; set; }
 
         #region Expandable Subscription
@@ -228,6 +310,9 @@ public Invoice Invoice
         /// The subscription that this invoice item has been created for, if any.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string SubscriptionId
         {
             get => this.InternalSubscription?.Id;
@@ -241,6 +326,9 @@ public string SubscriptionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Subscription Subscription
         {
             get => this.InternalSubscription?.ExpandedObject;
@@ -249,6 +337,10 @@ public Subscription Subscription
 
         [JsonProperty("subscription")]
         [JsonConverter(typeof(ExpandableFieldConverter<Subscription>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Subscription>))]
+#endif
         internal ExpandableField<Subscription> InternalSubscription { get; set; }
         #endregion
 
@@ -256,6 +348,9 @@ public Subscription Subscription
         /// The subscription item that this invoice item has been created for, if any.
         /// </summary>
         [JsonProperty("subscription_item")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_item")]
+#endif
         public string SubscriptionItem { get; set; }
 
         /// <summary>
@@ -263,6 +358,9 @@ public Subscription Subscription
         /// the invoice do not apply to this invoice item.
         /// </summary>
         [JsonProperty("tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rates")]
+#endif
         public List<TaxRate> TaxRates { get; set; }
 
         #region Expandable TestClock
@@ -272,6 +370,9 @@ public Subscription Subscription
         /// ID of the test clock this invoice item belongs to.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string TestClockId
         {
             get => this.InternalTestClock?.Id;
@@ -285,6 +386,9 @@ public string TestClockId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public TestHelpers.TestClock TestClock
         {
             get => this.InternalTestClock?.ExpandedObject;
@@ -293,6 +397,10 @@ public TestHelpers.TestClock TestClock
 
         [JsonProperty("test_clock")]
         [JsonConverter(typeof(ExpandableFieldConverter<TestHelpers.TestClock>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("test_clock")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<TestHelpers.TestClock>))]
+#endif
         internal ExpandableField<TestHelpers.TestClock> InternalTestClock { get; set; }
         #endregion
 
@@ -300,12 +408,18 @@ public TestHelpers.TestClock TestClock
         /// Unit amount (in the <c>currency</c> specified) of the invoice item.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
         /// Same as <c>unit_amount</c>, but contains a decimal value with at most 12 decimal places.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/InvoiceItems/InvoiceItemPeriod.cs b/src/Stripe.net/Entities/InvoiceItems/InvoiceItemPeriod.cs
index a169a75009..0b1b2aa5a7 100644
--- a/src/Stripe.net/Entities/InvoiceItems/InvoiceItemPeriod.cs
+++ b/src/Stripe.net/Entities/InvoiceItems/InvoiceItemPeriod.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceItemPeriod : StripeEntity<InvoiceItemPeriod>
     {
@@ -13,6 +16,10 @@ public class InvoiceItemPeriod : StripeEntity<InvoiceItemPeriod>
         /// </summary>
         [JsonProperty("end")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime End { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -20,6 +27,10 @@ public class InvoiceItemPeriod : StripeEntity<InvoiceItemPeriod>
         /// </summary>
         [JsonProperty("start")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("start")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Start { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
     }
 }
diff --git a/src/Stripe.net/Entities/InvoiceLineItems/InvoiceLineItem.cs b/src/Stripe.net/Entities/InvoiceLineItems/InvoiceLineItem.cs
index 80c1c2f234..42258b16b8 100644
--- a/src/Stripe.net/Entities/InvoiceLineItems/InvoiceLineItem.cs
+++ b/src/Stripe.net/Entities/InvoiceLineItems/InvoiceLineItem.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Linq;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Invoice Line Items represent the individual lines within an <a
@@ -15,24 +18,36 @@ namespace Stripe
     /// href="https://stripe.com/docs/api/invoiceitems">invoice item</a> or a <a
     /// href="https://stripe.com/docs/api/subscription_items">subscription item</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class InvoiceLineItem : StripeEntity<InvoiceLineItem>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// The amount, in cents (or local equivalent).
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -40,6 +55,9 @@ public class InvoiceLineItem : StripeEntity<InvoiceLineItem>, IHasId, IHasMetada
         /// item, excluding all tax and discounts.
         /// </summary>
         [JsonProperty("amount_excluding_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_excluding_tax")]
+#endif
         public long? AmountExcludingTax { get; set; }
 
         /// <summary>
@@ -48,24 +66,36 @@ public class InvoiceLineItem : StripeEntity<InvoiceLineItem>, IHasId, IHasMetada
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// The amount of discount calculated per discount for this line item.
         /// </summary>
         [JsonProperty("discount_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount_amounts")]
+#endif
         public List<InvoiceLineItemDiscountAmount> DiscountAmounts { get; set; }
 
         /// <summary>
         /// If true, discounts will apply to this line item. Always false for prorations.
         /// </summary>
         [JsonProperty("discountable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discountable")]
+#endif
         public bool Discountable { get; set; }
 
         #region Expandable Discounts
@@ -76,6 +106,9 @@ public class InvoiceLineItem : StripeEntity<InvoiceLineItem>, IHasId, IHasMetada
         /// invoice discounts. Use <c>expand[]=discounts</c> to expand each discount.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public List<string> DiscountIds
         {
             get => this.InternalDiscounts?.Select((x) => x.Id).ToList();
@@ -90,6 +123,9 @@ public List<string> DiscountIds
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public List<Discount> Discounts
         {
             get => this.InternalDiscounts?.Select((x) => x.ExpandedObject).ToList();
@@ -97,6 +133,9 @@ public List<Discount> Discounts
         }
 
         [JsonProperty("discounts", ItemConverterType = typeof(ExpandableFieldConverter<Discount>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         internal List<ExpandableField<Discount>> InternalDiscounts { get; set; }
         #endregion
 
@@ -104,6 +143,9 @@ public List<Discount> Discounts
         /// The ID of the invoice that contains this line item.
         /// </summary>
         [JsonProperty("invoice")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice")]
+#endif
         public string Invoice { get; set; }
 
         #region Expandable InvoiceItem
@@ -114,6 +156,9 @@ public List<Discount> Discounts
         /// associated with this line item if any.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string InvoiceItemId
         {
             get => this.InternalInvoiceItem?.Id;
@@ -128,6 +173,9 @@ public string InvoiceItemId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public InvoiceItem InvoiceItem
         {
             get => this.InternalInvoiceItem?.ExpandedObject;
@@ -136,6 +184,10 @@ public InvoiceItem InvoiceItem
 
         [JsonProperty("invoice_item")]
         [JsonConverter(typeof(ExpandableFieldConverter<InvoiceItem>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_item")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<InvoiceItem>))]
+#endif
         internal ExpandableField<InvoiceItem> InternalInvoiceItem { get; set; }
         #endregion
 
@@ -144,6 +196,9 @@ public InvoiceItem InvoiceItem
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -155,15 +210,24 @@ public InvoiceItem InvoiceItem
         /// creation.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         [JsonProperty("period")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("period")]
+#endif
         public InvoiceLineItemPeriod Period { get; set; }
 
         /// <summary>
         /// The plan of the subscription, if the line item is a subscription or a proration.
         /// </summary>
         [JsonProperty("plan")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("plan")]
+#endif
         public Plan Plan { get; set; }
 
         /// <summary>
@@ -171,30 +235,45 @@ public InvoiceItem InvoiceItem
         /// line item.
         /// </summary>
         [JsonProperty("pretax_credit_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pretax_credit_amounts")]
+#endif
         public List<InvoiceLineItemPretaxCreditAmount> PretaxCreditAmounts { get; set; }
 
         /// <summary>
         /// The price of the line item.
         /// </summary>
         [JsonProperty("price")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price")]
+#endif
         public Price Price { get; set; }
 
         /// <summary>
         /// Whether this is a proration.
         /// </summary>
         [JsonProperty("proration")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("proration")]
+#endif
         public bool Proration { get; set; }
 
         /// <summary>
         /// Additional details for proration line items.
         /// </summary>
         [JsonProperty("proration_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("proration_details")]
+#endif
         public InvoiceLineItemProrationDetails ProrationDetails { get; set; }
 
         /// <summary>
         /// The quantity of the subscription, if the line item is a subscription or a proration.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         #region Expandable Subscription
@@ -204,6 +283,9 @@ public InvoiceItem InvoiceItem
         /// The subscription that the invoice item pertains to, if any.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string SubscriptionId
         {
             get => this.InternalSubscription?.Id;
@@ -217,6 +299,9 @@ public string SubscriptionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Subscription Subscription
         {
             get => this.InternalSubscription?.ExpandedObject;
@@ -225,6 +310,10 @@ public Subscription Subscription
 
         [JsonProperty("subscription")]
         [JsonConverter(typeof(ExpandableFieldConverter<Subscription>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Subscription>))]
+#endif
         internal ExpandableField<Subscription> InternalSubscription { get; set; }
         #endregion
 
@@ -236,6 +325,9 @@ public Subscription Subscription
         /// an explicit result of a subscription.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string SubscriptionItemId
         {
             get => this.InternalSubscriptionItem?.Id;
@@ -250,6 +342,9 @@ public string SubscriptionItemId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public SubscriptionItem SubscriptionItem
         {
             get => this.InternalSubscriptionItem?.ExpandedObject;
@@ -258,6 +353,10 @@ public SubscriptionItem SubscriptionItem
 
         [JsonProperty("subscription_item")]
         [JsonConverter(typeof(ExpandableFieldConverter<SubscriptionItem>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_item")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<SubscriptionItem>))]
+#endif
         internal ExpandableField<SubscriptionItem> InternalSubscriptionItem { get; set; }
         #endregion
 
@@ -265,12 +364,18 @@ public SubscriptionItem SubscriptionItem
         /// The amount of tax calculated per tax rate for this line item.
         /// </summary>
         [JsonProperty("tax_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_amounts")]
+#endif
         public List<InvoiceLineItemTaxAmount> TaxAmounts { get; set; }
 
         /// <summary>
         /// The tax rates which apply to the line item.
         /// </summary>
         [JsonProperty("tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rates")]
+#endif
         public List<TaxRate> TaxRates { get; set; }
 
         /// <summary>
@@ -279,6 +384,9 @@ public SubscriptionItem SubscriptionItem
         /// One of: <c>invoiceitem</c>, or <c>subscription</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
@@ -286,6 +394,9 @@ public SubscriptionItem SubscriptionItem
         /// item, excluding all tax and discounts.
         /// </summary>
         [JsonProperty("unit_amount_excluding_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_excluding_tax")]
+#endif
         public decimal? UnitAmountExcludingTax { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/InvoiceLineItems/InvoiceLineItemDiscountAmount.cs b/src/Stripe.net/Entities/InvoiceLineItems/InvoiceLineItemDiscountAmount.cs
index 372e2b047d..395bf60894 100644
--- a/src/Stripe.net/Entities/InvoiceLineItems/InvoiceLineItemDiscountAmount.cs
+++ b/src/Stripe.net/Entities/InvoiceLineItems/InvoiceLineItemDiscountAmount.cs
@@ -3,13 +3,22 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class InvoiceLineItemDiscountAmount : StripeEntity<InvoiceLineItemDiscountAmount>
     {
         /// <summary>
         /// The amount, in cents (or local equivalent), of the discount.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         #region Expandable Discount
@@ -19,6 +28,9 @@ public class InvoiceLineItemDiscountAmount : StripeEntity<InvoiceLineItemDiscoun
         /// The discount that was applied to get this discount amount.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DiscountId
         {
             get => this.InternalDiscount?.Id;
@@ -32,6 +44,9 @@ public string DiscountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Discount Discount
         {
             get => this.InternalDiscount?.ExpandedObject;
@@ -40,6 +55,10 @@ public Discount Discount
 
         [JsonProperty("discount")]
         [JsonConverter(typeof(ExpandableFieldConverter<Discount>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Discount>))]
+#endif
         internal ExpandableField<Discount> InternalDiscount { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/InvoiceLineItems/InvoiceLineItemPeriod.cs b/src/Stripe.net/Entities/InvoiceLineItems/InvoiceLineItemPeriod.cs
index 25744df3f8..88973309a6 100644
--- a/src/Stripe.net/Entities/InvoiceLineItems/InvoiceLineItemPeriod.cs
+++ b/src/Stripe.net/Entities/InvoiceLineItems/InvoiceLineItemPeriod.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceLineItemPeriod : StripeEntity<InvoiceLineItemPeriod>
     {
@@ -13,6 +16,10 @@ public class InvoiceLineItemPeriod : StripeEntity<InvoiceLineItemPeriod>
         /// </summary>
         [JsonProperty("end")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime End { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -20,6 +27,10 @@ public class InvoiceLineItemPeriod : StripeEntity<InvoiceLineItemPeriod>
         /// </summary>
         [JsonProperty("start")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("start")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Start { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
     }
 }
diff --git a/src/Stripe.net/Entities/InvoiceLineItems/InvoiceLineItemPretaxCreditAmount.cs b/src/Stripe.net/Entities/InvoiceLineItems/InvoiceLineItemPretaxCreditAmount.cs
index 4205739176..591be6b185 100644
--- a/src/Stripe.net/Entities/InvoiceLineItems/InvoiceLineItemPretaxCreditAmount.cs
+++ b/src/Stripe.net/Entities/InvoiceLineItems/InvoiceLineItemPretaxCreditAmount.cs
@@ -3,13 +3,22 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class InvoiceLineItemPretaxCreditAmount : StripeEntity<InvoiceLineItemPretaxCreditAmount>
     {
         /// <summary>
         /// The amount, in cents (or local equivalent), of the pretax credit amount.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         #region Expandable CreditBalanceTransaction
@@ -19,6 +28,9 @@ public class InvoiceLineItemPretaxCreditAmount : StripeEntity<InvoiceLineItemPre
         /// The credit balance transaction that was applied to get this pretax credit amount.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CreditBalanceTransactionId
         {
             get => this.InternalCreditBalanceTransaction?.Id;
@@ -32,6 +44,9 @@ public string CreditBalanceTransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Billing.CreditBalanceTransaction CreditBalanceTransaction
         {
             get => this.InternalCreditBalanceTransaction?.ExpandedObject;
@@ -40,6 +55,10 @@ public Billing.CreditBalanceTransaction CreditBalanceTransaction
 
         [JsonProperty("credit_balance_transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<Billing.CreditBalanceTransaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("credit_balance_transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Billing.CreditBalanceTransaction>))]
+#endif
         internal ExpandableField<Billing.CreditBalanceTransaction> InternalCreditBalanceTransaction { get; set; }
         #endregion
 
@@ -50,6 +69,9 @@ public Billing.CreditBalanceTransaction CreditBalanceTransaction
         /// The discount that was applied to get this pretax credit amount.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DiscountId
         {
             get => this.InternalDiscount?.Id;
@@ -63,6 +85,9 @@ public string DiscountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Discount Discount
         {
             get => this.InternalDiscount?.ExpandedObject;
@@ -71,6 +96,10 @@ public Discount Discount
 
         [JsonProperty("discount")]
         [JsonConverter(typeof(ExpandableFieldConverter<Discount>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Discount>))]
+#endif
         internal ExpandableField<Discount> InternalDiscount { get; set; }
         #endregion
 
@@ -79,6 +108,9 @@ public Discount Discount
         /// One of: <c>credit_balance_transaction</c>, or <c>discount</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/InvoiceLineItems/InvoiceLineItemProrationDetails.cs b/src/Stripe.net/Entities/InvoiceLineItems/InvoiceLineItemProrationDetails.cs
index c2a278c521..7216e26868 100644
--- a/src/Stripe.net/Entities/InvoiceLineItems/InvoiceLineItemProrationDetails.cs
+++ b/src/Stripe.net/Entities/InvoiceLineItems/InvoiceLineItemProrationDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceLineItemProrationDetails : StripeEntity<InvoiceLineItemProrationDetails>
     {
@@ -10,6 +13,9 @@ public class InvoiceLineItemProrationDetails : StripeEntity<InvoiceLineItemProra
         /// credit proration applies.
         /// </summary>
         [JsonProperty("credited_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("credited_items")]
+#endif
         public InvoiceLineItemProrationDetailsCreditedItems CreditedItems { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/InvoiceLineItems/InvoiceLineItemProrationDetailsCreditedItems.cs b/src/Stripe.net/Entities/InvoiceLineItems/InvoiceLineItemProrationDetailsCreditedItems.cs
index 75ba1baaa1..d65fd02cd3 100644
--- a/src/Stripe.net/Entities/InvoiceLineItems/InvoiceLineItemProrationDetailsCreditedItems.cs
+++ b/src/Stripe.net/Entities/InvoiceLineItems/InvoiceLineItemProrationDetailsCreditedItems.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceLineItemProrationDetailsCreditedItems : StripeEntity<InvoiceLineItemProrationDetailsCreditedItems>
     {
@@ -10,12 +13,18 @@ public class InvoiceLineItemProrationDetailsCreditedItems : StripeEntity<Invoice
         /// Invoice containing the credited invoice line items.
         /// </summary>
         [JsonProperty("invoice")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice")]
+#endif
         public string Invoice { get; set; }
 
         /// <summary>
         /// Credited invoice line items.
         /// </summary>
         [JsonProperty("invoice_line_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_line_items")]
+#endif
         public List<string> InvoiceLineItems { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/InvoiceLineItems/InvoiceLineItemTaxAmount.cs b/src/Stripe.net/Entities/InvoiceLineItems/InvoiceLineItemTaxAmount.cs
index 7943a45076..a35f7ccd05 100644
--- a/src/Stripe.net/Entities/InvoiceLineItems/InvoiceLineItemTaxAmount.cs
+++ b/src/Stripe.net/Entities/InvoiceLineItems/InvoiceLineItemTaxAmount.cs
@@ -3,19 +3,31 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class InvoiceLineItemTaxAmount : StripeEntity<InvoiceLineItemTaxAmount>
     {
         /// <summary>
         /// The amount, in cents (or local equivalent), of the tax.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
         /// Whether this tax amount is inclusive or exclusive.
         /// </summary>
         [JsonProperty("inclusive")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("inclusive")]
+#endif
         public bool Inclusive { get; set; }
 
         #region Expandable TaxRate
@@ -25,6 +37,9 @@ public class InvoiceLineItemTaxAmount : StripeEntity<InvoiceLineItemTaxAmount>
         /// The tax rate that was applied to get this tax amount.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string TaxRateId
         {
             get => this.InternalTaxRate?.Id;
@@ -38,6 +53,9 @@ public string TaxRateId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public TaxRate TaxRate
         {
             get => this.InternalTaxRate?.ExpandedObject;
@@ -46,6 +64,10 @@ public TaxRate TaxRate
 
         [JsonProperty("tax_rate")]
         [JsonConverter(typeof(ExpandableFieldConverter<TaxRate>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rate")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<TaxRate>))]
+#endif
         internal ExpandableField<TaxRate> InternalTaxRate { get; set; }
         #endregion
 
@@ -59,12 +81,18 @@ public TaxRate TaxRate
         /// <c>standard_rated</c>, <c>taxable_basis_reduced</c>, or <c>zero_rated</c>.
         /// </summary>
         [JsonProperty("taxability_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxability_reason")]
+#endif
         public string TaxabilityReason { get; set; }
 
         /// <summary>
         /// The amount on which tax is calculated, in cents (or local equivalent).
         /// </summary>
         [JsonProperty("taxable_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxable_amount")]
+#endif
         public long? TaxableAmount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/InvoiceRenderingTemplates/InvoiceRenderingTemplate.cs b/src/Stripe.net/Entities/InvoiceRenderingTemplates/InvoiceRenderingTemplate.cs
index 3d2f29bb4c..15ffec3fdb 100644
--- a/src/Stripe.net/Entities/InvoiceRenderingTemplates/InvoiceRenderingTemplate.cs
+++ b/src/Stripe.net/Entities/InvoiceRenderingTemplates/InvoiceRenderingTemplate.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Invoice Rendering Templates are used to configure how invoices are rendered on surfaces
@@ -17,12 +20,18 @@ public class InvoiceRenderingTemplate : StripeEntity<InvoiceRenderingTemplate>,
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -30,6 +39,10 @@ public class InvoiceRenderingTemplate : StripeEntity<InvoiceRenderingTemplate>,
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -37,6 +50,9 @@ public class InvoiceRenderingTemplate : StripeEntity<InvoiceRenderingTemplate>,
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -45,12 +61,18 @@ public class InvoiceRenderingTemplate : StripeEntity<InvoiceRenderingTemplate>,
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// A brief description of the template, hidden from customers.
         /// </summary>
         [JsonProperty("nickname")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("nickname")]
+#endif
         public string Nickname { get; set; }
 
         /// <summary>
@@ -58,6 +80,9 @@ public class InvoiceRenderingTemplate : StripeEntity<InvoiceRenderingTemplate>,
         /// One of: <c>active</c>, or <c>archived</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -65,6 +90,9 @@ public class InvoiceRenderingTemplate : StripeEntity<InvoiceRenderingTemplate>,
         /// changes any field that controls invoice rendering.
         /// </summary>
         [JsonProperty("version")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("version")]
+#endif
         public long Version { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/Invoice.cs b/src/Stripe.net/Entities/Invoices/Invoice.cs
index 0f5f783403..7c88c16052 100644
--- a/src/Stripe.net/Entities/Invoices/Invoice.cs
+++ b/src/Stripe.net/Entities/Invoices/Invoice.cs
@@ -6,6 +6,9 @@ namespace Stripe
     using System.Linq;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Invoices are statements of amounts owed by a customer, and are either generated one-off,
@@ -42,6 +45,9 @@ namespace Stripe
     /// Related guide: <a href="https://stripe.com/docs/billing/invoices/sending">Send invoices
     /// to customers</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class Invoice : StripeEntity<Invoice>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
@@ -51,12 +57,18 @@ public class Invoice : StripeEntity<Invoice>, IHasId, IHasMetadata, IHasObject
         /// for more details.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -64,6 +76,9 @@ public class Invoice : StripeEntity<Invoice>, IHasId, IHasMetadata, IHasObject
         /// creating the invoice.
         /// </summary>
         [JsonProperty("account_country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_country")]
+#endif
         public string AccountCountry { get; set; }
 
         /// <summary>
@@ -71,6 +86,9 @@ public class Invoice : StripeEntity<Invoice>, IHasId, IHasMetadata, IHasObject
         /// creating the invoice.
         /// </summary>
         [JsonProperty("account_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_name")]
+#endif
         public string AccountName { get; set; }
 
         #region Expandable AccountTaxIds
@@ -81,6 +99,9 @@ public class Invoice : StripeEntity<Invoice>, IHasId, IHasMetadata, IHasObject
         /// draft.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public List<string> AccountTaxIdIds
         {
             get => this.InternalAccountTaxIds?.Select((x) => x.Id).ToList();
@@ -95,6 +116,9 @@ public List<string> AccountTaxIdIds
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public List<TaxId> AccountTaxIds
         {
             get => this.InternalAccountTaxIds?.Select((x) => x.ExpandedObject).ToList();
@@ -102,6 +126,9 @@ public List<TaxId> AccountTaxIds
         }
 
         [JsonProperty("account_tax_ids", ItemConverterType = typeof(ExpandableFieldConverter<TaxId>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_tax_ids")]
+#endif
         internal List<ExpandableField<TaxId>> InternalAccountTaxIds { get; set; }
         #endregion
 
@@ -114,24 +141,36 @@ public List<TaxId> AccountTaxIds
         /// for the amount specified in <c>amount_due</c>.
         /// </summary>
         [JsonProperty("amount_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_due")]
+#endif
         public long AmountDue { get; set; }
 
         /// <summary>
         /// The amount, in cents (or local equivalent), that was paid.
         /// </summary>
         [JsonProperty("amount_paid")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_paid")]
+#endif
         public long AmountPaid { get; set; }
 
         /// <summary>
         /// The difference between amount_due and amount_paid, in cents (or local equivalent).
         /// </summary>
         [JsonProperty("amount_remaining")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_remaining")]
+#endif
         public long AmountRemaining { get; set; }
 
         /// <summary>
         /// This is the sum of all the shipping amounts.
         /// </summary>
         [JsonProperty("amount_shipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_shipping")]
+#endif
         public long AmountShipping { get; set; }
 
         #region Expandable Application
@@ -141,6 +180,9 @@ public List<TaxId> AccountTaxIds
         /// ID of the Connect Application that created the invoice.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ApplicationId
         {
             get => this.InternalApplication?.Id;
@@ -154,6 +196,9 @@ public string ApplicationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Application Application
         {
             get => this.InternalApplication?.ExpandedObject;
@@ -162,6 +207,10 @@ public Application Application
 
         [JsonProperty("application")]
         [JsonConverter(typeof(ExpandableFieldConverter<Application>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Application>))]
+#endif
         internal ExpandableField<Application> InternalApplication { get; set; }
         #endregion
 
@@ -170,6 +219,9 @@ public Application Application
         /// transferred to the application owner's Stripe account when the invoice is paid.
         /// </summary>
         [JsonProperty("application_fee_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_amount")]
+#endif
         public long? ApplicationFeeAmount { get; set; }
 
         /// <summary>
@@ -183,6 +235,9 @@ public Application Application
         /// obtained.
         /// </summary>
         [JsonProperty("attempt_count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("attempt_count")]
+#endif
         public long AttemptCount { get; set; }
 
         /// <summary>
@@ -191,6 +246,9 @@ public Application Application
         /// display that invoice as unpaid to your users.
         /// </summary>
         [JsonProperty("attempted")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("attempted")]
+#endif
         public bool Attempted { get; set; }
 
         /// <summary>
@@ -200,9 +258,15 @@ public Application Application
         /// automatically advance without an explicit action.
         /// </summary>
         [JsonProperty("auto_advance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("auto_advance")]
+#endif
         public bool AutoAdvance { get; set; }
 
         [JsonProperty("automatic_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatic_tax")]
+#endif
         public InvoiceAutomaticTax AutomaticTax { get; set; }
 
         /// <summary>
@@ -213,6 +277,10 @@ public Application Application
         /// </summary>
         [JsonProperty("automatically_finalizes_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatically_finalizes_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? AutomaticallyFinalizesAt { get; set; }
 
         /// <summary>
@@ -232,6 +300,9 @@ public Application Application
         /// <c>upcoming</c>.
         /// </summary>
         [JsonProperty("billing_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_reason")]
+#endif
         public string BillingReason { get; set; }
 
         #region Expandable Charge
@@ -241,6 +312,9 @@ public Application Application
         /// ID of the latest charge generated for this invoice, if any.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ChargeId
         {
             get => this.InternalCharge?.Id;
@@ -254,6 +328,9 @@ public string ChargeId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Charge Charge
         {
             get => this.InternalCharge?.ExpandedObject;
@@ -262,6 +339,10 @@ public Charge Charge
 
         [JsonProperty("charge")]
         [JsonConverter(typeof(ExpandableFieldConverter<Charge>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("charge")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Charge>))]
+#endif
         internal ExpandableField<Charge> InternalCharge { get; set; }
         #endregion
 
@@ -273,6 +354,9 @@ public Charge Charge
         /// One of: <c>charge_automatically</c>, or <c>send_invoice</c>.
         /// </summary>
         [JsonProperty("collection_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("collection_method")]
+#endif
         public string CollectionMethod { get; set; }
 
         /// <summary>
@@ -280,6 +364,10 @@ public Charge Charge
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -288,12 +376,18 @@ public Charge Charge
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// Custom fields displayed on the invoice.
         /// </summary>
         [JsonProperty("custom_fields")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_fields")]
+#endif
         public List<InvoiceCustomField> CustomFields { get; set; }
 
         #region Expandable Customer
@@ -303,6 +397,9 @@ public Charge Charge
         /// The ID of the customer who will be billed.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerId
         {
             get => this.InternalCustomer?.Id;
@@ -316,6 +413,9 @@ public string CustomerId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Customer Customer
         {
             get => this.InternalCustomer?.ExpandedObject;
@@ -324,6 +424,10 @@ public Customer Customer
 
         [JsonProperty("customer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Customer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Customer>))]
+#endif
         internal ExpandableField<Customer> InternalCustomer { get; set; }
         #endregion
 
@@ -333,6 +437,9 @@ public Customer Customer
         /// updated.
         /// </summary>
         [JsonProperty("customer_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_address")]
+#endif
         public Address CustomerAddress { get; set; }
 
         /// <summary>
@@ -341,6 +448,9 @@ public Customer Customer
         /// updated.
         /// </summary>
         [JsonProperty("customer_email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_email")]
+#endif
         public string CustomerEmail { get; set; }
 
         /// <summary>
@@ -349,6 +459,9 @@ public Customer Customer
         /// updated.
         /// </summary>
         [JsonProperty("customer_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_name")]
+#endif
         public string CustomerName { get; set; }
 
         /// <summary>
@@ -357,6 +470,9 @@ public Customer Customer
         /// updated.
         /// </summary>
         [JsonProperty("customer_phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_phone")]
+#endif
         public string CustomerPhone { get; set; }
 
         /// <summary>
@@ -365,6 +481,9 @@ public Customer Customer
         /// be updated.
         /// </summary>
         [JsonProperty("customer_shipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_shipping")]
+#endif
         public Shipping CustomerShipping { get; set; }
 
         /// <summary>
@@ -374,6 +493,9 @@ public Customer Customer
         /// One of: <c>exempt</c>, <c>none</c>, or <c>reverse</c>.
         /// </summary>
         [JsonProperty("customer_tax_exempt")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_tax_exempt")]
+#endif
         public string CustomerTaxExempt { get; set; }
 
         /// <summary>
@@ -382,6 +504,9 @@ public Customer Customer
         /// longer be updated.
         /// </summary>
         [JsonProperty("customer_tax_ids")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_tax_ids")]
+#endif
         public List<InvoiceCustomerTaxId> CustomerTaxIds { get; set; }
 
         #region Expandable DefaultPaymentMethod
@@ -393,6 +518,9 @@ public Customer Customer
         /// method, if any, or to the default payment method in the customer's invoice settings.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DefaultPaymentMethodId
         {
             get => this.InternalDefaultPaymentMethod?.Id;
@@ -408,6 +536,9 @@ public string DefaultPaymentMethodId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PaymentMethod DefaultPaymentMethod
         {
             get => this.InternalDefaultPaymentMethod?.ExpandedObject;
@@ -416,6 +547,10 @@ public PaymentMethod DefaultPaymentMethod
 
         [JsonProperty("default_payment_method")]
         [JsonConverter(typeof(ExpandableFieldConverter<PaymentMethod>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_payment_method")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PaymentMethod>))]
+#endif
         internal ExpandableField<PaymentMethod> InternalDefaultPaymentMethod { get; set; }
         #endregion
 
@@ -428,6 +563,9 @@ public PaymentMethod DefaultPaymentMethod
         /// subscription's default source, if any, or to the customer's default source.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DefaultSourceId
         {
             get => this.InternalDefaultSource?.Id;
@@ -443,6 +581,9 @@ public string DefaultSourceId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public IPaymentSource DefaultSource
         {
             get => this.InternalDefaultSource?.ExpandedObject;
@@ -451,6 +592,10 @@ public IPaymentSource DefaultSource
 
         [JsonProperty("default_source")]
         [JsonConverter(typeof(ExpandableFieldConverter<IPaymentSource>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_source")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<IPaymentSource>))]
+#endif
         internal ExpandableField<IPaymentSource> InternalDefaultSource { get; set; }
         #endregion
 
@@ -458,12 +603,19 @@ public IPaymentSource DefaultSource
         /// The tax rates applied to this invoice, if any.
         /// </summary>
         [JsonProperty("default_tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_tax_rates")]
+#endif
         public List<TaxRate> DefaultTaxRates { get; set; }
 
         /// <summary>
         /// Whether this object is deleted or not.
         /// </summary>
         [JsonProperty("deleted", NullValueHandling = NullValueHandling.Ignore)]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+        [STJS.JsonIgnore(Condition = STJS.JsonIgnoreCondition.WhenWritingNull)]
+#endif
         public bool? Deleted { get; set; }
 
         /// <summary>
@@ -471,6 +623,9 @@ public IPaymentSource DefaultSource
         /// Referenced as 'memo' in the Dashboard.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -478,6 +633,9 @@ public IPaymentSource DefaultSource
         /// if there are multiple discounts.
         /// </summary>
         [JsonProperty("discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+#endif
         public Discount Discount { get; set; }
 
         #region Expandable Discounts
@@ -488,6 +646,9 @@ public IPaymentSource DefaultSource
         /// discounts. Use <c>expand[]=discounts</c> to expand each discount.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public List<string> DiscountIds
         {
             get => this.InternalDiscounts?.Select((x) => x.Id).ToList();
@@ -502,6 +663,9 @@ public List<string> DiscountIds
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public List<Discount> Discounts
         {
             get => this.InternalDiscounts?.Select((x) => x.ExpandedObject).ToList();
@@ -509,6 +673,9 @@ public List<Discount> Discounts
         }
 
         [JsonProperty("discounts", ItemConverterType = typeof(ExpandableFieldConverter<Discount>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         internal List<ExpandableField<Discount>> InternalDiscounts { get; set; }
         #endregion
 
@@ -518,6 +685,10 @@ public List<Discount> Discounts
         /// </summary>
         [JsonProperty("due_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("due_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? DueDate { get; set; }
 
         /// <summary>
@@ -527,6 +698,10 @@ public List<Discount> Discounts
         /// </summary>
         [JsonProperty("effective_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("effective_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? EffectiveAt { get; set; }
 
         /// <summary>
@@ -535,12 +710,18 @@ public List<Discount> Discounts
         /// attempted for the invoice. If the invoice has not been finalized yet, this will be null.
         /// </summary>
         [JsonProperty("ending_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ending_balance")]
+#endif
         public long? EndingBalance { get; set; }
 
         /// <summary>
         /// Footer displayed on the invoice.
         /// </summary>
         [JsonProperty("footer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("footer")]
+#endif
         public string Footer { get; set; }
 
         /// <summary>
@@ -549,6 +730,9 @@ public List<Discount> Discounts
         /// for more details.
         /// </summary>
         [JsonProperty("from_invoice")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("from_invoice")]
+#endif
         public InvoiceFromInvoice FromInvoice { get; set; }
 
         /// <summary>
@@ -556,6 +740,9 @@ public List<Discount> Discounts
         /// If the invoice has not been finalized yet, this will be null.
         /// </summary>
         [JsonProperty("hosted_invoice_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hosted_invoice_url")]
+#endif
         public string HostedInvoiceUrl { get; set; }
 
         /// <summary>
@@ -563,9 +750,15 @@ public List<Discount> Discounts
         /// this will be null.
         /// </summary>
         [JsonProperty("invoice_pdf")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_pdf")]
+#endif
         public string InvoicePdf { get; set; }
 
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public InvoiceIssuer Issuer { get; set; }
 
         /// <summary>
@@ -573,6 +766,9 @@ public List<Discount> Discounts
         /// cleared when the invoice is successfully finalized.
         /// </summary>
         [JsonProperty("last_finalization_error")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_finalization_error")]
+#endif
         public StripeError LastFinalizationError { get; set; }
 
         #region Expandable LatestRevision
@@ -582,6 +778,9 @@ public List<Discount> Discounts
         /// The ID of the most recent non-draft revision of this invoice.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string LatestRevisionId
         {
             get => this.InternalLatestRevision?.Id;
@@ -595,6 +794,9 @@ public string LatestRevisionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Invoice LatestRevision
         {
             get => this.InternalLatestRevision?.ExpandedObject;
@@ -603,6 +805,10 @@ public Invoice LatestRevision
 
         [JsonProperty("latest_revision")]
         [JsonConverter(typeof(ExpandableFieldConverter<Invoice>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("latest_revision")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Invoice>))]
+#endif
         internal ExpandableField<Invoice> InternalLatestRevision { get; set; }
         #endregion
 
@@ -613,6 +819,9 @@ public Invoice LatestRevision
         /// invoice creation in chronological order.
         /// </summary>
         [JsonProperty("lines")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lines")]
+#endif
         public StripeList<InvoiceLineItem> Lines { get; set; }
 
         /// <summary>
@@ -620,6 +829,9 @@ public Invoice LatestRevision
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -628,6 +840,9 @@ public Invoice LatestRevision
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -636,6 +851,10 @@ public Invoice LatestRevision
         /// </summary>
         [JsonProperty("next_payment_attempt")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("next_payment_attempt")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? NextPaymentAttempt { get; set; }
 
         /// <summary>
@@ -643,6 +862,9 @@ public Invoice LatestRevision
         /// invoice. This starts with the customer's unique invoice_prefix if it is specified.
         /// </summary>
         [JsonProperty("number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("number")]
+#endif
         public string Number { get; set; }
 
         #region Expandable OnBehalfOf
@@ -655,6 +877,9 @@ public Invoice LatestRevision
         /// with Connect</a> documentation for details.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string OnBehalfOfId
         {
             get => this.InternalOnBehalfOf?.Id;
@@ -671,6 +896,9 @@ public string OnBehalfOfId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account OnBehalfOf
         {
             get => this.InternalOnBehalfOf?.ExpandedObject;
@@ -679,6 +907,10 @@ public Account OnBehalfOf
 
         [JsonProperty("on_behalf_of")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalOnBehalfOf { get; set; }
         #endregion
 
@@ -687,6 +919,9 @@ public Account OnBehalfOf
         /// (most commonly) with a charge or with credit from the customer's account balance.
         /// </summary>
         [JsonProperty("paid")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paid")]
+#endif
         public bool Paid { get; set; }
 
         /// <summary>
@@ -694,6 +929,9 @@ public Account OnBehalfOf
         /// hasn't been paid yet or was paid on Stripe.
         /// </summary>
         [JsonProperty("paid_out_of_band")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paid_out_of_band")]
+#endif
         public bool PaidOutOfBand { get; set; }
 
         #region Expandable PaymentIntent
@@ -705,6 +943,9 @@ public Account OnBehalfOf
         /// invoice will cancel the PaymentIntent.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string PaymentIntentId
         {
             get => this.InternalPaymentIntent?.Id;
@@ -720,6 +961,9 @@ public string PaymentIntentId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PaymentIntent PaymentIntent
         {
             get => this.InternalPaymentIntent?.ExpandedObject;
@@ -728,10 +972,17 @@ public PaymentIntent PaymentIntent
 
         [JsonProperty("payment_intent")]
         [JsonConverter(typeof(ExpandableFieldConverter<PaymentIntent>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_intent")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PaymentIntent>))]
+#endif
         internal ExpandableField<PaymentIntent> InternalPaymentIntent { get; set; }
         #endregion
 
         [JsonProperty("payment_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_settings")]
+#endif
         public InvoicePaymentSettings PaymentSettings { get; set; }
 
         /// <summary>
@@ -742,6 +993,10 @@ public PaymentIntent PaymentIntent
         /// </summary>
         [JsonProperty("period_end")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("period_end")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime PeriodEnd { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -752,18 +1007,28 @@ public PaymentIntent PaymentIntent
         /// </summary>
         [JsonProperty("period_start")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("period_start")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime PeriodStart { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// Total amount of all post-payment credit notes issued for this invoice.
         /// </summary>
         [JsonProperty("post_payment_credit_notes_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("post_payment_credit_notes_amount")]
+#endif
         public long PostPaymentCreditNotesAmount { get; set; }
 
         /// <summary>
         /// Total amount of all pre-payment credit notes issued for this invoice.
         /// </summary>
         [JsonProperty("pre_payment_credit_notes_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pre_payment_credit_notes_amount")]
+#endif
         public long PrePaymentCreditNotesAmount { get; set; }
 
         #region Expandable Quote
@@ -773,6 +1038,9 @@ public PaymentIntent PaymentIntent
         /// The quote this invoice was generated from.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string QuoteId
         {
             get => this.InternalQuote?.Id;
@@ -786,6 +1054,9 @@ public string QuoteId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Quote Quote
         {
             get => this.InternalQuote?.ExpandedObject;
@@ -794,6 +1065,10 @@ public Quote Quote
 
         [JsonProperty("quote")]
         [JsonConverter(typeof(ExpandableFieldConverter<Quote>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quote")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Quote>))]
+#endif
         internal ExpandableField<Quote> InternalQuote { get; set; }
         #endregion
 
@@ -801,6 +1076,9 @@ public Quote Quote
         /// This is the transaction number that appears on email receipts sent for this invoice.
         /// </summary>
         [JsonProperty("receipt_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("receipt_number")]
+#endif
         public string ReceiptNumber { get; set; }
 
         /// <summary>
@@ -808,12 +1086,18 @@ public Quote Quote
         /// customer-facing surfaces such as PDF and Hosted Invoice Page.
         /// </summary>
         [JsonProperty("rendering")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("rendering")]
+#endif
         public InvoiceRendering Rendering { get; set; }
 
         /// <summary>
         /// The details of the cost of shipping, including the ShippingRate applied on the invoice.
         /// </summary>
         [JsonProperty("shipping_cost")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_cost")]
+#endif
         public InvoiceShippingCost ShippingCost { get; set; }
 
         /// <summary>
@@ -822,6 +1106,9 @@ public Quote Quote
         /// customer.
         /// </summary>
         [JsonProperty("shipping_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_details")]
+#endif
         public InvoiceShippingDetails ShippingDetails { get; set; }
 
         /// <summary>
@@ -830,12 +1117,18 @@ public Quote Quote
         /// also includes any customer balance that was applied to the original invoice.
         /// </summary>
         [JsonProperty("starting_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("starting_balance")]
+#endif
         public long StartingBalance { get; set; }
 
         /// <summary>
         /// Extra information about an invoice for the customer's credit card statement.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
 
         /// <summary>
@@ -846,9 +1139,15 @@ public Quote Quote
         /// One of: <c>draft</c>, <c>open</c>, <c>paid</c>, <c>uncollectible</c>, or <c>void</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         [JsonProperty("status_transitions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_transitions")]
+#endif
         public InvoiceStatusTransitions StatusTransitions { get; set; }
 
         #region Expandable Subscription
@@ -858,6 +1157,9 @@ public Quote Quote
         /// The subscription that this invoice was prepared for, if any.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string SubscriptionId
         {
             get => this.InternalSubscription?.Id;
@@ -871,6 +1173,9 @@ public string SubscriptionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Subscription Subscription
         {
             get => this.InternalSubscription?.ExpandedObject;
@@ -879,6 +1184,10 @@ public Subscription Subscription
 
         [JsonProperty("subscription")]
         [JsonConverter(typeof(ExpandableFieldConverter<Subscription>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Subscription>))]
+#endif
         internal ExpandableField<Subscription> InternalSubscription { get; set; }
         #endregion
 
@@ -886,6 +1195,9 @@ public Subscription Subscription
         /// Details about the subscription that created this invoice.
         /// </summary>
         [JsonProperty("subscription_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_details")]
+#endif
         public InvoiceSubscriptionDetails SubscriptionDetails { get; set; }
 
         /// <summary>
@@ -894,6 +1206,10 @@ public Subscription Subscription
         /// </summary>
         [JsonProperty("subscription_proration_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_proration_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime SubscriptionProrationDate { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -902,6 +1218,9 @@ public Subscription Subscription
         /// incorporated.
         /// </summary>
         [JsonProperty("subtotal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subtotal")]
+#endif
         public long Subtotal { get; set; }
 
         /// <summary>
@@ -910,6 +1229,9 @@ public Subscription Subscription
         /// incorporated.
         /// </summary>
         [JsonProperty("subtotal_excluding_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subtotal_excluding_tax")]
+#endif
         public long? SubtotalExcludingTax { get; set; }
 
         /// <summary>
@@ -917,6 +1239,9 @@ public Subscription Subscription
         /// invoice.
         /// </summary>
         [JsonProperty("tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax")]
+#endif
         public long? Tax { get; set; }
 
         #region Expandable TestClock
@@ -926,6 +1251,9 @@ public Subscription Subscription
         /// ID of the test clock this invoice belongs to.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string TestClockId
         {
             get => this.InternalTestClock?.Id;
@@ -939,6 +1267,9 @@ public string TestClockId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public TestHelpers.TestClock TestClock
         {
             get => this.InternalTestClock?.ExpandedObject;
@@ -947,22 +1278,35 @@ public TestHelpers.TestClock TestClock
 
         [JsonProperty("test_clock")]
         [JsonConverter(typeof(ExpandableFieldConverter<TestHelpers.TestClock>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("test_clock")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<TestHelpers.TestClock>))]
+#endif
         internal ExpandableField<TestHelpers.TestClock> InternalTestClock { get; set; }
         #endregion
 
         [JsonProperty("threshold_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("threshold_reason")]
+#endif
         public InvoiceThresholdReason ThresholdReason { get; set; }
 
         /// <summary>
         /// Total after discounts and taxes.
         /// </summary>
         [JsonProperty("total")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("total")]
+#endif
         public long Total { get; set; }
 
         /// <summary>
         /// The aggregate amounts calculated per discount across all line items.
         /// </summary>
         [JsonProperty("total_discount_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("total_discount_amounts")]
+#endif
         public List<InvoiceDiscountAmount> TotalDiscountAmounts { get; set; }
 
         /// <summary>
@@ -970,6 +1314,9 @@ public TestHelpers.TestClock TestClock
         /// invoice including all discounts but excluding all tax.
         /// </summary>
         [JsonProperty("total_excluding_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("total_excluding_tax")]
+#endif
         public long? TotalExcludingTax { get; set; }
 
         /// <summary>
@@ -978,12 +1325,18 @@ public TestHelpers.TestClock TestClock
         /// items.
         /// </summary>
         [JsonProperty("total_pretax_credit_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("total_pretax_credit_amounts")]
+#endif
         public List<InvoiceTotalPretaxCreditAmount> TotalPretaxCreditAmounts { get; set; }
 
         /// <summary>
         /// The aggregate amounts calculated per tax rate for all line items.
         /// </summary>
         [JsonProperty("total_tax_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("total_tax_amounts")]
+#endif
         public List<InvoiceTaxAmount> TotalTaxAmounts { get; set; }
 
         /// <summary>
@@ -991,6 +1344,9 @@ public TestHelpers.TestClock TestClock
         /// funds from the payment will be transferred to for the invoice.
         /// </summary>
         [JsonProperty("transfer_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_data")]
+#endif
         public InvoiceTransferData TransferData { get; set; }
 
         /// <summary>
@@ -1002,6 +1358,10 @@ public TestHelpers.TestClock TestClock
         /// </summary>
         [JsonProperty("webhooks_delivered_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("webhooks_delivered_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? WebhooksDeliveredAt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoiceAutomaticTax.cs b/src/Stripe.net/Entities/Invoices/InvoiceAutomaticTax.cs
index 39d8b96ffc..d9e6a69ca7 100644
--- a/src/Stripe.net/Entities/Invoices/InvoiceAutomaticTax.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoiceAutomaticTax.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceAutomaticTax : StripeEntity<InvoiceAutomaticTax>
     {
@@ -11,6 +14,9 @@ public class InvoiceAutomaticTax : StripeEntity<InvoiceAutomaticTax>
         /// <c>finalization_system_error</c>.
         /// </summary>
         [JsonProperty("disabled_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("disabled_reason")]
+#endif
         public string DisabledReason { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class InvoiceAutomaticTax : StripeEntity<InvoiceAutomaticTax>
         /// <c>tax_behavior=unspecified</c>) cannot be added to automatic tax invoices.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class InvoiceAutomaticTax : StripeEntity<InvoiceAutomaticTax>
         /// transaction is returned in the report of the connected account.
         /// </summary>
         [JsonProperty("liability")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("liability")]
+#endif
         public InvoiceAutomaticTaxLiability Liability { get; set; }
 
         /// <summary>
@@ -35,6 +47,9 @@ public class InvoiceAutomaticTax : StripeEntity<InvoiceAutomaticTax>
         /// One of: <c>complete</c>, <c>failed</c>, or <c>requires_location_inputs</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoiceAutomaticTaxLiability.cs b/src/Stripe.net/Entities/Invoices/InvoiceAutomaticTaxLiability.cs
index 0b62ae5deb..53d31c083c 100644
--- a/src/Stripe.net/Entities/Invoices/InvoiceAutomaticTaxLiability.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoiceAutomaticTaxLiability.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class InvoiceAutomaticTaxLiability : StripeEntity<InvoiceAutomaticTaxLiability>
     {
         #region Expandable Account
@@ -13,6 +19,9 @@ public class InvoiceAutomaticTaxLiability : StripeEntity<InvoiceAutomaticTaxLiab
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AccountId
         {
             get => this.InternalAccount?.Id;
@@ -26,6 +35,9 @@ public string AccountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Account
         {
             get => this.InternalAccount?.ExpandedObject;
@@ -34,6 +46,10 @@ public Account Account
 
         [JsonProperty("account")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalAccount { get; set; }
         #endregion
 
@@ -42,6 +58,9 @@ public Account Account
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoiceCustomField.cs b/src/Stripe.net/Entities/Invoices/InvoiceCustomField.cs
index c03ae8e362..2eb2a2373a 100644
--- a/src/Stripe.net/Entities/Invoices/InvoiceCustomField.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoiceCustomField.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceCustomField : StripeEntity<InvoiceCustomField>
     {
@@ -9,12 +12,18 @@ public class InvoiceCustomField : StripeEntity<InvoiceCustomField>
         /// The name of the custom field.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// The value of the custom field.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoiceCustomerTaxId.cs b/src/Stripe.net/Entities/Invoices/InvoiceCustomerTaxId.cs
index 32dea31ca7..c778a14147 100644
--- a/src/Stripe.net/Entities/Invoices/InvoiceCustomerTaxId.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoiceCustomerTaxId.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceCustomerTaxId : StripeEntity<InvoiceCustomerTaxId>
     {
@@ -49,12 +52,18 @@ public class InvoiceCustomerTaxId : StripeEntity<InvoiceCustomerTaxId>
         /// <c>ve_rif</c>, <c>vn_tin</c>, <c>za_vat</c>, <c>zm_tin</c>, or <c>zw_tin</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
         /// The value of the tax ID.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoiceDiscountAmount.cs b/src/Stripe.net/Entities/Invoices/InvoiceDiscountAmount.cs
index ec2d8da049..1c32cb83fd 100644
--- a/src/Stripe.net/Entities/Invoices/InvoiceDiscountAmount.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoiceDiscountAmount.cs
@@ -2,15 +2,27 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class InvoiceDiscountAmount : StripeEntity<InvoiceDiscountAmount>
     {
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         #region Expandable Discount
 
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DiscountId
         {
             get => this.InternalDiscount?.Id;
@@ -18,6 +30,9 @@ public string DiscountId
         }
 
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Discount Discount
         {
             get => this.InternalDiscount?.ExpandedObject;
@@ -26,6 +41,10 @@ public Discount Discount
 
         [JsonProperty("discount")]
         [JsonConverter(typeof(ExpandableFieldConverter<Discount>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Discount>))]
+#endif
         internal ExpandableField<Discount> InternalDiscount { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Invoices/InvoiceFromInvoice.cs b/src/Stripe.net/Entities/Invoices/InvoiceFromInvoice.cs
index 948930ca85..e9f7efcc44 100644
--- a/src/Stripe.net/Entities/Invoices/InvoiceFromInvoice.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoiceFromInvoice.cs
@@ -3,13 +3,22 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class InvoiceFromInvoice : StripeEntity<InvoiceFromInvoice>
     {
         /// <summary>
         /// The relation between this invoice and the cloned invoice.
         /// </summary>
         [JsonProperty("action")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("action")]
+#endif
         public string Action { get; set; }
 
         #region Expandable Invoice
@@ -19,6 +28,9 @@ public class InvoiceFromInvoice : StripeEntity<InvoiceFromInvoice>
         /// The invoice that was cloned.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string InvoiceId
         {
             get => this.InternalInvoice?.Id;
@@ -32,6 +44,9 @@ public string InvoiceId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Invoice Invoice
         {
             get => this.InternalInvoice?.ExpandedObject;
@@ -40,6 +55,10 @@ public Invoice Invoice
 
         [JsonProperty("invoice")]
         [JsonConverter(typeof(ExpandableFieldConverter<Invoice>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Invoice>))]
+#endif
         internal ExpandableField<Invoice> InternalInvoice { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Invoices/InvoiceIssuer.cs b/src/Stripe.net/Entities/Invoices/InvoiceIssuer.cs
index cb256a0078..042fda1c8c 100644
--- a/src/Stripe.net/Entities/Invoices/InvoiceIssuer.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoiceIssuer.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class InvoiceIssuer : StripeEntity<InvoiceIssuer>
     {
         #region Expandable Account
@@ -13,6 +19,9 @@ public class InvoiceIssuer : StripeEntity<InvoiceIssuer>
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AccountId
         {
             get => this.InternalAccount?.Id;
@@ -26,6 +35,9 @@ public string AccountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Account
         {
             get => this.InternalAccount?.ExpandedObject;
@@ -34,6 +46,10 @@ public Account Account
 
         [JsonProperty("account")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalAccount { get; set; }
         #endregion
 
@@ -42,6 +58,9 @@ public Account Account
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoicePaymentSettings.cs b/src/Stripe.net/Entities/Invoices/InvoicePaymentSettings.cs
index 5863c42172..088386bc06 100644
--- a/src/Stripe.net/Entities/Invoices/InvoicePaymentSettings.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoicePaymentSettings.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoicePaymentSettings : StripeEntity<InvoicePaymentSettings>
     {
@@ -12,12 +15,18 @@ public class InvoicePaymentSettings : StripeEntity<InvoicePaymentSettings>
         /// default_source, if set.
         /// </summary>
         [JsonProperty("default_mandate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_mandate")]
+#endif
         public string DefaultMandate { get; set; }
 
         /// <summary>
         /// Payment-method-specific configuration to provide to the invoice’s PaymentIntent.
         /// </summary>
         [JsonProperty("payment_method_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_options")]
+#endif
         public InvoicePaymentSettingsPaymentMethodOptions PaymentMethodOptions { get; set; }
 
         /// <summary>
@@ -37,6 +46,9 @@ public class InvoicePaymentSettings : StripeEntity<InvoicePaymentSettings>
         /// <c>sofort</c>, <c>swish</c>, <c>us_bank_account</c>, or <c>wechat_pay</c>.
         /// </summary>
         [JsonProperty("payment_method_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_types")]
+#endif
         public List<string> PaymentMethodTypes { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptions.cs b/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptions.cs
index 3c30cf920f..dd664c9752 100644
--- a/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptions.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoicePaymentSettingsPaymentMethodOptions : StripeEntity<InvoicePaymentSettingsPaymentMethodOptions>
     {
@@ -10,6 +13,9 @@ public class InvoicePaymentSettingsPaymentMethodOptions : StripeEntity<InvoicePa
         /// pre-authorized debit payment method options to pass to the invoice’s PaymentIntent.
         /// </summary>
         [JsonProperty("acss_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acss_debit")]
+#endif
         public InvoicePaymentSettingsPaymentMethodOptionsAcssDebit AcssDebit { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class InvoicePaymentSettingsPaymentMethodOptions : StripeEntity<InvoicePa
         /// payment method options to pass to the invoice’s PaymentIntent.
         /// </summary>
         [JsonProperty("bancontact")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bancontact")]
+#endif
         public InvoicePaymentSettingsPaymentMethodOptionsBancontact Bancontact { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class InvoicePaymentSettingsPaymentMethodOptions : StripeEntity<InvoicePa
         /// options to pass to the invoice’s PaymentIntent.
         /// </summary>
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public InvoicePaymentSettingsPaymentMethodOptionsCard Card { get; set; }
 
         /// <summary>
@@ -31,6 +43,9 @@ public class InvoicePaymentSettingsPaymentMethodOptions : StripeEntity<InvoicePa
         /// transfer payment method options to pass to the invoice’s PaymentIntent.
         /// </summary>
         [JsonProperty("customer_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_balance")]
+#endif
         public InvoicePaymentSettingsPaymentMethodOptionsCustomerBalance CustomerBalance { get; set; }
 
         /// <summary>
@@ -38,6 +53,9 @@ public class InvoicePaymentSettingsPaymentMethodOptions : StripeEntity<InvoicePa
         /// method options to pass to the invoice’s PaymentIntent.
         /// </summary>
         [JsonProperty("konbini")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("konbini")]
+#endif
         public InvoicePaymentSettingsPaymentMethodOptionsKonbini Konbini { get; set; }
 
         /// <summary>
@@ -45,6 +63,9 @@ public class InvoicePaymentSettingsPaymentMethodOptions : StripeEntity<InvoicePa
         /// Debit payment method options to pass to the invoice’s PaymentIntent.
         /// </summary>
         [JsonProperty("sepa_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_debit")]
+#endif
         public InvoicePaymentSettingsPaymentMethodOptionsSepaDebit SepaDebit { get; set; }
 
         /// <summary>
@@ -52,6 +73,9 @@ public class InvoicePaymentSettingsPaymentMethodOptions : StripeEntity<InvoicePa
         /// debit payment method options to pass to the invoice’s PaymentIntent.
         /// </summary>
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public InvoicePaymentSettingsPaymentMethodOptionsUsBankAccount UsBankAccount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsAcssDebit.cs b/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsAcssDebit.cs
index 99c3122722..3eee47a45e 100644
--- a/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsAcssDebit.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsAcssDebit.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoicePaymentSettingsPaymentMethodOptionsAcssDebit : StripeEntity<InvoicePaymentSettingsPaymentMethodOptionsAcssDebit>
     {
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public InvoicePaymentSettingsPaymentMethodOptionsAcssDebitMandateOptions MandateOptions { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsAcssDebit : StripeEntity<
         /// One of: <c>automatic</c>, <c>instant</c>, or <c>microdeposits</c>.
         /// </summary>
         [JsonProperty("verification_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification_method")]
+#endif
         public string VerificationMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsAcssDebitMandateOptions.cs b/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsAcssDebitMandateOptions.cs
index 8da48f4177..e722f70563 100644
--- a/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsAcssDebitMandateOptions.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsAcssDebitMandateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoicePaymentSettingsPaymentMethodOptionsAcssDebitMandateOptions : StripeEntity<InvoicePaymentSettingsPaymentMethodOptionsAcssDebitMandateOptions>
     {
@@ -10,6 +13,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsAcssDebitMandateOptions :
         /// One of: <c>business</c>, or <c>personal</c>.
         /// </summary>
         [JsonProperty("transaction_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_type")]
+#endif
         public string TransactionType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsBancontact.cs b/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsBancontact.cs
index 037a3dcadf..9405154251 100644
--- a/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsBancontact.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsBancontact.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoicePaymentSettingsPaymentMethodOptionsBancontact : StripeEntity<InvoicePaymentSettingsPaymentMethodOptionsBancontact>
     {
@@ -11,6 +14,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsBancontact : StripeEntity
         /// One of: <c>de</c>, <c>en</c>, <c>fr</c>, or <c>nl</c>.
         /// </summary>
         [JsonProperty("preferred_language")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_language")]
+#endif
         public string PreferredLanguage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCard.cs b/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCard.cs
index 35788fd097..a640a00559 100644
--- a/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCard.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCard.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoicePaymentSettingsPaymentMethodOptionsCard : StripeEntity<InvoicePaymentSettingsPaymentMethodOptionsCard>
     {
         [JsonProperty("installments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("installments")]
+#endif
         public InvoicePaymentSettingsPaymentMethodOptionsCardInstallments Installments { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsCard : StripeEntity<Invoi
         /// One of: <c>any</c>, <c>automatic</c>, or <c>challenge</c>.
         /// </summary>
         [JsonProperty("request_three_d_secure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_three_d_secure")]
+#endif
         public string RequestThreeDSecure { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCardInstallments.cs b/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCardInstallments.cs
index 7971c3da19..e590f43c86 100644
--- a/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCardInstallments.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCardInstallments.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoicePaymentSettingsPaymentMethodOptionsCardInstallments : StripeEntity<InvoicePaymentSettingsPaymentMethodOptionsCardInstallments>
     {
@@ -9,6 +12,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsCardInstallments : Stripe
         /// Whether Installments are enabled for this Invoice.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCustomerBalance.cs b/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCustomerBalance.cs
index f23e0ef726..ee5c75ff8b 100644
--- a/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCustomerBalance.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCustomerBalance.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoicePaymentSettingsPaymentMethodOptionsCustomerBalance : StripeEntity<InvoicePaymentSettingsPaymentMethodOptionsCustomerBalance>
     {
         [JsonProperty("bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_transfer")]
+#endif
         public InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransfer BankTransfer { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsCustomerBalance : StripeE
         /// balance. Permitted values include: <c>bank_transfer</c>.
         /// </summary>
         [JsonProperty("funding_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding_type")]
+#endif
         public string FundingType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransfer.cs b/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransfer.cs
index 59b3df1dcf..1f2798f2f5 100644
--- a/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransfer.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransfer.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransfer : StripeEntity<InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransfer>
     {
         [JsonProperty("eu_bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eu_bank_transfer")]
+#endif
         public InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfer EuBankTransfer { get; set; }
 
         /// <summary>
@@ -14,6 +20,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransf
         /// <c>mx_bank_transfer</c>, or <c>us_bank_transfer</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfer.cs b/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfer.cs
index 57f8a282cc..6af33af56b 100644
--- a/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfer.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfer.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfer : StripeEntity<InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfer>
     {
@@ -11,6 +14,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransf
         /// One of: <c>BE</c>, <c>DE</c>, <c>ES</c>, <c>FR</c>, <c>IE</c>, or <c>NL</c>.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsUsBankAccount.cs b/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsUsBankAccount.cs
index e4c4f77374..54352a898b 100644
--- a/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsUsBankAccount.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsUsBankAccount.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoicePaymentSettingsPaymentMethodOptionsUsBankAccount : StripeEntity<InvoicePaymentSettingsPaymentMethodOptionsUsBankAccount>
     {
         [JsonProperty("financial_connections")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_connections")]
+#endif
         public InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnections FinancialConnections { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsUsBankAccount : StripeEnt
         /// One of: <c>automatic</c>, <c>instant</c>, or <c>microdeposits</c>.
         /// </summary>
         [JsonProperty("verification_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification_method")]
+#endif
         public string VerificationMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnections.cs b/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnections.cs
index b9efe08fe2..0f3be4f6d2 100644
--- a/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnections.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnections.cs
@@ -3,10 +3,16 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnections : StripeEntity<InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnections>
     {
         [JsonProperty("filters")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("filters")]
+#endif
         public InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters Filters { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialCon
         /// <c>transactions</c>.
         /// </summary>
         [JsonProperty("permissions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("permissions")]
+#endif
         public List<string> Permissions { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialCon
         /// One of: <c>balances</c>, <c>ownership</c>, or <c>transactions</c>.
         /// </summary>
         [JsonProperty("prefetch")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("prefetch")]
+#endif
         public List<string> Prefetch { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters.cs b/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters.cs
index 1e6787380e..832a5c5b57 100644
--- a/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters : StripeEntity<InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters>
     {
@@ -12,6 +15,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialCon
         /// One of: <c>checking</c>, or <c>savings</c>.
         /// </summary>
         [JsonProperty("account_subcategories")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_subcategories")]
+#endif
         public List<string> AccountSubcategories { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoiceRendering.cs b/src/Stripe.net/Entities/Invoices/InvoiceRendering.cs
index a41de30876..e382c8da57 100644
--- a/src/Stripe.net/Entities/Invoices/InvoiceRendering.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoiceRendering.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceRendering : StripeEntity<InvoiceRendering>
     {
@@ -9,24 +12,36 @@ public class InvoiceRendering : StripeEntity<InvoiceRendering>
         /// How line-item prices and amounts will be displayed with respect to tax on invoice PDFs.
         /// </summary>
         [JsonProperty("amount_tax_display")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_tax_display")]
+#endif
         public string AmountTaxDisplay { get; set; }
 
         /// <summary>
         /// Invoice pdf rendering options.
         /// </summary>
         [JsonProperty("pdf")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pdf")]
+#endif
         public InvoiceRenderingPdf Pdf { get; set; }
 
         /// <summary>
         /// ID of the rendering template that the invoice is formatted by.
         /// </summary>
         [JsonProperty("template")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("template")]
+#endif
         public string Template { get; set; }
 
         /// <summary>
         /// Version of the rendering template that the invoice is using.
         /// </summary>
         [JsonProperty("template_version")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("template_version")]
+#endif
         public long? TemplateVersion { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoiceRenderingPdf.cs b/src/Stripe.net/Entities/Invoices/InvoiceRenderingPdf.cs
index c77303bfc9..ce1ffa8aaa 100644
--- a/src/Stripe.net/Entities/Invoices/InvoiceRenderingPdf.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoiceRenderingPdf.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceRenderingPdf : StripeEntity<InvoiceRenderingPdf>
     {
@@ -11,6 +14,9 @@ public class InvoiceRenderingPdf : StripeEntity<InvoiceRenderingPdf>
         /// One of: <c>a4</c>, <c>auto</c>, or <c>letter</c>.
         /// </summary>
         [JsonProperty("page_size")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("page_size")]
+#endif
         public string PageSize { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoiceShippingCost.cs b/src/Stripe.net/Entities/Invoices/InvoiceShippingCost.cs
index d29e991091..cf01023712 100644
--- a/src/Stripe.net/Entities/Invoices/InvoiceShippingCost.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoiceShippingCost.cs
@@ -4,25 +4,40 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class InvoiceShippingCost : StripeEntity<InvoiceShippingCost>
     {
         /// <summary>
         /// Total shipping cost before any taxes are applied.
         /// </summary>
         [JsonProperty("amount_subtotal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_subtotal")]
+#endif
         public long AmountSubtotal { get; set; }
 
         /// <summary>
         /// Total tax amount applied due to shipping costs. If no tax was applied, defaults to 0.
         /// </summary>
         [JsonProperty("amount_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_tax")]
+#endif
         public long AmountTax { get; set; }
 
         /// <summary>
         /// Total shipping cost after taxes are applied.
         /// </summary>
         [JsonProperty("amount_total")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_total")]
+#endif
         public long AmountTotal { get; set; }
 
         #region Expandable ShippingRate
@@ -32,6 +47,9 @@ public class InvoiceShippingCost : StripeEntity<InvoiceShippingCost>
         /// The ID of the ShippingRate for this invoice.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ShippingRateId
         {
             get => this.InternalShippingRate?.Id;
@@ -45,6 +63,9 @@ public string ShippingRateId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public ShippingRate ShippingRate
         {
             get => this.InternalShippingRate?.ExpandedObject;
@@ -53,6 +74,10 @@ public ShippingRate ShippingRate
 
         [JsonProperty("shipping_rate")]
         [JsonConverter(typeof(ExpandableFieldConverter<ShippingRate>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_rate")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<ShippingRate>))]
+#endif
         internal ExpandableField<ShippingRate> InternalShippingRate { get; set; }
         #endregion
 
@@ -60,6 +85,9 @@ public ShippingRate ShippingRate
         /// The taxes applied to the shipping rate.
         /// </summary>
         [JsonProperty("taxes")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxes")]
+#endif
         public List<InvoiceShippingCostTax> Taxes { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoiceShippingCostTax.cs b/src/Stripe.net/Entities/Invoices/InvoiceShippingCostTax.cs
index 9f6d52575f..831885c4f2 100644
--- a/src/Stripe.net/Entities/Invoices/InvoiceShippingCostTax.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoiceShippingCostTax.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceShippingCostTax : StripeEntity<InvoiceShippingCostTax>
     {
@@ -9,6 +12,9 @@ public class InvoiceShippingCostTax : StripeEntity<InvoiceShippingCostTax>
         /// Amount of tax applied for this rate.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class InvoiceShippingCostTax : StripeEntity<InvoiceShippingCostTax>
         /// Related guide: <a href="https://stripe.com/billing/taxes/tax-rates">Tax rates</a>.
         /// </summary>
         [JsonProperty("rate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("rate")]
+#endif
         public TaxRate Rate { get; set; }
 
         /// <summary>
@@ -33,12 +42,18 @@ public class InvoiceShippingCostTax : StripeEntity<InvoiceShippingCostTax>
         /// <c>standard_rated</c>, <c>taxable_basis_reduced</c>, or <c>zero_rated</c>.
         /// </summary>
         [JsonProperty("taxability_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxability_reason")]
+#endif
         public string TaxabilityReason { get; set; }
 
         /// <summary>
         /// The amount on which tax is calculated, in cents (or local equivalent).
         /// </summary>
         [JsonProperty("taxable_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxable_amount")]
+#endif
         public long? TaxableAmount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoiceShippingDetails.cs b/src/Stripe.net/Entities/Invoices/InvoiceShippingDetails.cs
index caf37b7944..0439964096 100644
--- a/src/Stripe.net/Entities/Invoices/InvoiceShippingDetails.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoiceShippingDetails.cs
@@ -2,28 +2,43 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceShippingDetails : StripeEntity<InvoiceShippingDetails>
     {
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public Address Address { get; set; }
 
         /// <summary>
         /// The delivery service that shipped a physical product, such as Fedex, UPS, USPS, etc.
         /// </summary>
         [JsonProperty("carrier")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("carrier")]
+#endif
         public string Carrier { get; set; }
 
         /// <summary>
         /// Recipient name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// Recipient phone (including extension).
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
 
         /// <summary>
@@ -32,6 +47,9 @@ public class InvoiceShippingDetails : StripeEntity<InvoiceShippingDetails>
         /// commas.
         /// </summary>
         [JsonProperty("tracking_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tracking_number")]
+#endif
         public string TrackingNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoiceStatusTransitions.cs b/src/Stripe.net/Entities/Invoices/InvoiceStatusTransitions.cs
index 1333bc4930..b6aa2d247e 100644
--- a/src/Stripe.net/Entities/Invoices/InvoiceStatusTransitions.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoiceStatusTransitions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceStatusTransitions : StripeEntity<InvoiceStatusTransitions>
     {
@@ -12,6 +15,10 @@ public class InvoiceStatusTransitions : StripeEntity<InvoiceStatusTransitions>
         /// </summary>
         [JsonProperty("finalized_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("finalized_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? FinalizedAt { get; set; }
 
         /// <summary>
@@ -19,6 +26,10 @@ public class InvoiceStatusTransitions : StripeEntity<InvoiceStatusTransitions>
         /// </summary>
         [JsonProperty("marked_uncollectible_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("marked_uncollectible_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? MarkedUncollectibleAt { get; set; }
 
         /// <summary>
@@ -26,6 +37,10 @@ public class InvoiceStatusTransitions : StripeEntity<InvoiceStatusTransitions>
         /// </summary>
         [JsonProperty("paid_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paid_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? PaidAt { get; set; }
 
         /// <summary>
@@ -33,6 +48,10 @@ public class InvoiceStatusTransitions : StripeEntity<InvoiceStatusTransitions>
         /// </summary>
         [JsonProperty("voided_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("voided_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? VoidedAt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoiceSubscriptionDetails.cs b/src/Stripe.net/Entities/Invoices/InvoiceSubscriptionDetails.cs
index bf820cf3ac..5529d40a71 100644
--- a/src/Stripe.net/Entities/Invoices/InvoiceSubscriptionDetails.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoiceSubscriptionDetails.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceSubscriptionDetails : StripeEntity<InvoiceSubscriptionDetails>, IHasMetadata
     {
@@ -13,6 +16,9 @@ public class InvoiceSubscriptionDetails : StripeEntity<InvoiceSubscriptionDetail
         /// populated only for invoices created on or after June 29, 2023.</em>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoiceTaxAmount.cs b/src/Stripe.net/Entities/Invoices/InvoiceTaxAmount.cs
index 715a99123f..6eed36a722 100644
--- a/src/Stripe.net/Entities/Invoices/InvoiceTaxAmount.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoiceTaxAmount.cs
@@ -2,19 +2,31 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class InvoiceTaxAmount : StripeEntity<InvoiceTaxAmount>
     {
         /// <summary>
         /// The amount, in cents (or local equivalent), of the tax.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
         /// Whether this tax amount is inclusive or exclusive.
         /// </summary>
         [JsonProperty("inclusive")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("inclusive")]
+#endif
         public bool Inclusive { get; set; }
 
         #region Expandable TaxRate
@@ -24,6 +36,9 @@ public class InvoiceTaxAmount : StripeEntity<InvoiceTaxAmount>
         /// The tax rate that was applied to get this tax amount.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string TaxRateId
         {
             get => this.InternalTaxRate?.Id;
@@ -37,6 +52,9 @@ public string TaxRateId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public TaxRate TaxRate
         {
             get => this.InternalTaxRate?.ExpandedObject;
@@ -45,6 +63,10 @@ public TaxRate TaxRate
 
         [JsonProperty("tax_rate")]
         [JsonConverter(typeof(ExpandableFieldConverter<TaxRate>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rate")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<TaxRate>))]
+#endif
         internal ExpandableField<TaxRate> InternalTaxRate { get; set; }
         #endregion
 
@@ -58,12 +80,18 @@ public TaxRate TaxRate
         /// <c>standard_rated</c>, <c>taxable_basis_reduced</c>, or <c>zero_rated</c>.
         /// </summary>
         [JsonProperty("taxability_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxability_reason")]
+#endif
         public string TaxabilityReason { get; set; }
 
         /// <summary>
         /// The amount on which tax is calculated, in cents (or local equivalent).
         /// </summary>
         [JsonProperty("taxable_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxable_amount")]
+#endif
         public long? TaxableAmount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoiceThresholdReason.cs b/src/Stripe.net/Entities/Invoices/InvoiceThresholdReason.cs
index 65d3c86f93..7e40146177 100644
--- a/src/Stripe.net/Entities/Invoices/InvoiceThresholdReason.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoiceThresholdReason.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceThresholdReason : StripeEntity<InvoiceThresholdReason>
     {
@@ -10,12 +13,18 @@ public class InvoiceThresholdReason : StripeEntity<InvoiceThresholdReason>
         /// The total invoice amount threshold boundary if it triggered the threshold invoice.
         /// </summary>
         [JsonProperty("amount_gte")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_gte")]
+#endif
         public long? AmountGte { get; set; }
 
         /// <summary>
         /// Indicates which line items triggered a threshold invoice.
         /// </summary>
         [JsonProperty("item_reasons")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("item_reasons")]
+#endif
         public List<InvoiceThresholdReasonItemReason> ItemReasons { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoiceThresholdReasonItemReason.cs b/src/Stripe.net/Entities/Invoices/InvoiceThresholdReasonItemReason.cs
index 7fbfdda7e8..ef7f6d2e0a 100644
--- a/src/Stripe.net/Entities/Invoices/InvoiceThresholdReasonItemReason.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoiceThresholdReasonItemReason.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceThresholdReasonItemReason : StripeEntity<InvoiceThresholdReasonItemReason>
     {
@@ -10,12 +13,18 @@ public class InvoiceThresholdReasonItemReason : StripeEntity<InvoiceThresholdRea
         /// The IDs of the line items that triggered the threshold invoice.
         /// </summary>
         [JsonProperty("line_item_ids")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line_item_ids")]
+#endif
         public List<string> LineItemIds { get; set; }
 
         /// <summary>
         /// The quantity threshold boundary that applied to the given line item.
         /// </summary>
         [JsonProperty("usage_gte")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("usage_gte")]
+#endif
         public long UsageGte { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoiceTotalPretaxCreditAmount.cs b/src/Stripe.net/Entities/Invoices/InvoiceTotalPretaxCreditAmount.cs
index 562273de0a..7e6539e5fe 100644
--- a/src/Stripe.net/Entities/Invoices/InvoiceTotalPretaxCreditAmount.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoiceTotalPretaxCreditAmount.cs
@@ -3,13 +3,22 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class InvoiceTotalPretaxCreditAmount : StripeEntity<InvoiceTotalPretaxCreditAmount>
     {
         /// <summary>
         /// The amount, in cents (or local equivalent), of the pretax credit amount.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         #region Expandable CreditBalanceTransaction
@@ -19,6 +28,9 @@ public class InvoiceTotalPretaxCreditAmount : StripeEntity<InvoiceTotalPretaxCre
         /// The credit balance transaction that was applied to get this pretax credit amount.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CreditBalanceTransactionId
         {
             get => this.InternalCreditBalanceTransaction?.Id;
@@ -32,6 +44,9 @@ public string CreditBalanceTransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Billing.CreditBalanceTransaction CreditBalanceTransaction
         {
             get => this.InternalCreditBalanceTransaction?.ExpandedObject;
@@ -40,6 +55,10 @@ public Billing.CreditBalanceTransaction CreditBalanceTransaction
 
         [JsonProperty("credit_balance_transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<Billing.CreditBalanceTransaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("credit_balance_transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Billing.CreditBalanceTransaction>))]
+#endif
         internal ExpandableField<Billing.CreditBalanceTransaction> InternalCreditBalanceTransaction { get; set; }
         #endregion
 
@@ -50,6 +69,9 @@ public Billing.CreditBalanceTransaction CreditBalanceTransaction
         /// The discount that was applied to get this pretax credit amount.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DiscountId
         {
             get => this.InternalDiscount?.Id;
@@ -63,6 +85,9 @@ public string DiscountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Discount Discount
         {
             get => this.InternalDiscount?.ExpandedObject;
@@ -71,6 +96,10 @@ public Discount Discount
 
         [JsonProperty("discount")]
         [JsonConverter(typeof(ExpandableFieldConverter<Discount>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Discount>))]
+#endif
         internal ExpandableField<Discount> InternalDiscount { get; set; }
         #endregion
 
@@ -79,6 +108,9 @@ public Discount Discount
         /// One of: <c>credit_balance_transaction</c>, or <c>discount</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Invoices/InvoiceTransferData.cs b/src/Stripe.net/Entities/Invoices/InvoiceTransferData.cs
index 8c9d79312d..ca9d366aba 100644
--- a/src/Stripe.net/Entities/Invoices/InvoiceTransferData.cs
+++ b/src/Stripe.net/Entities/Invoices/InvoiceTransferData.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class InvoiceTransferData : StripeEntity<InvoiceTransferData>
     {
         /// <summary>
@@ -12,6 +18,9 @@ public class InvoiceTransferData : StripeEntity<InvoiceTransferData>
         /// destination.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         #region Expandable Destination
@@ -21,6 +30,9 @@ public class InvoiceTransferData : StripeEntity<InvoiceTransferData>
         /// The account where funds from the payment will be transferred to upon payment success.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DestinationId
         {
             get => this.InternalDestination?.Id;
@@ -34,6 +46,9 @@ public string DestinationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Destination
         {
             get => this.InternalDestination?.ExpandedObject;
@@ -42,6 +57,10 @@ public Account Destination
 
         [JsonProperty("destination")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalDestination { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Issuing/Authorizations/Authorization.cs b/src/Stripe.net/Entities/Issuing/Authorizations/Authorization.cs
index 6be292db2f..1e13a8038a 100644
--- a/src/Stripe.net/Entities/Issuing/Authorizations/Authorization.cs
+++ b/src/Stripe.net/Entities/Issuing/Authorizations/Authorization.cs
@@ -5,6 +5,9 @@ namespace Stripe.Issuing
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// When an <a href="https://stripe.com/docs/issuing">issued card</a> is used to make a
@@ -15,18 +18,27 @@ namespace Stripe.Issuing
     /// Related guide: <a href="https://stripe.com/docs/issuing/purchases/authorizations">Issued
     /// card authorizations</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class Authorization : StripeEntity<Authorization>, IHasId, IHasMetadata, IHasObject, IBalanceTransactionSource
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -36,6 +48,9 @@ public class Authorization : StripeEntity<Authorization>, IHasId, IHasMetadata,
         /// <c>currency</c> and <c>merchant_currency</c> are different.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -44,12 +59,18 @@ public class Authorization : StripeEntity<Authorization>, IHasId, IHasMetadata,
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("amount_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_details")]
+#endif
         public AuthorizationAmountDetails AmountDetails { get; set; }
 
         /// <summary>
         /// Whether the authorization has been approved.
         /// </summary>
         [JsonProperty("approved")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("approved")]
+#endif
         public bool Approved { get; set; }
 
         /// <summary>
@@ -58,12 +79,18 @@ public class Authorization : StripeEntity<Authorization>, IHasId, IHasMetadata,
         /// <c>swipe</c>.
         /// </summary>
         [JsonProperty("authorization_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("authorization_method")]
+#endif
         public string AuthorizationMethod { get; set; }
 
         /// <summary>
         /// List of balance transactions associated with this authorization.
         /// </summary>
         [JsonProperty("balance_transactions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("balance_transactions")]
+#endif
         public List<BalanceTransaction> BalanceTransactions { get; set; }
 
         /// <summary>
@@ -71,6 +98,9 @@ public class Authorization : StripeEntity<Authorization>, IHasId, IHasMetadata,
         /// that are issued to cardholders.
         /// </summary>
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public Card Card { get; set; }
 
         #region Expandable Cardholder
@@ -80,6 +110,9 @@ public class Authorization : StripeEntity<Authorization>, IHasId, IHasMetadata,
         /// The cardholder to whom this authorization belongs.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CardholderId
         {
             get => this.InternalCardholder?.Id;
@@ -93,6 +126,9 @@ public string CardholderId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Cardholder Cardholder
         {
             get => this.InternalCardholder?.ExpandedObject;
@@ -101,6 +137,10 @@ public Cardholder Cardholder
 
         [JsonProperty("cardholder")]
         [JsonConverter(typeof(ExpandableFieldConverter<Cardholder>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Cardholder>))]
+#endif
         internal ExpandableField<Cardholder> InternalCardholder { get; set; }
         #endregion
 
@@ -109,6 +149,10 @@ public Cardholder Cardholder
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -119,12 +163,18 @@ public Cardholder Cardholder
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// Fleet-specific information for authorizations using Fleet cards.
         /// </summary>
         [JsonProperty("fleet")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fleet")]
+#endif
         public AuthorizationFleet Fleet { get; set; }
 
         /// <summary>
@@ -132,6 +182,9 @@ public Cardholder Cardholder
         /// risk reasons.
         /// </summary>
         [JsonProperty("fraud_challenges")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fraud_challenges")]
+#endif
         public List<AuthorizationFraudChallenge> FraudChallenges { get; set; }
 
         /// <summary>
@@ -140,6 +193,9 @@ public Cardholder Cardholder
         /// the fuel dispensed.
         /// </summary>
         [JsonProperty("fuel")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fuel")]
+#endif
         public AuthorizationFuel Fuel { get; set; }
 
         /// <summary>
@@ -147,6 +203,9 @@ public Cardholder Cardholder
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -157,6 +216,9 @@ public Cardholder Cardholder
         /// <c>merchant_currency</c> and <c>currency</c> are different.
         /// </summary>
         [JsonProperty("merchant_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("merchant_amount")]
+#endif
         public long MerchantAmount { get; set; }
 
         /// <summary>
@@ -168,9 +230,15 @@ public Cardholder Cardholder
         /// currency</a>.
         /// </summary>
         [JsonProperty("merchant_currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("merchant_currency")]
+#endif
         public string MerchantCurrency { get; set; }
 
         [JsonProperty("merchant_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("merchant_data")]
+#endif
         public AuthorizationMerchantData MerchantData { get; set; }
 
         /// <summary>
@@ -179,12 +247,18 @@ public Cardholder Cardholder
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Details about the authorization, such as identifiers, set by the card network.
         /// </summary>
         [JsonProperty("network_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network_data")]
+#endif
         public AuthorizationNetworkData NetworkData { get; set; }
 
         /// <summary>
@@ -192,6 +266,9 @@ public Cardholder Cardholder
         /// <c>issuing_authorization.request</c> webhook.
         /// </summary>
         [JsonProperty("pending_request")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pending_request")]
+#endif
         public AuthorizationPendingRequest PendingRequest { get; set; }
 
         /// <summary>
@@ -202,6 +279,9 @@ public Cardholder Cardholder
         /// helpful in determining why a given authorization was approved/declined.
         /// </summary>
         [JsonProperty("request_history")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_history")]
+#endif
         public List<AuthorizationRequestHistory> RequestHistory { get; set; }
 
         /// <summary>
@@ -209,6 +289,9 @@ public Cardholder Cardholder
         /// One of: <c>closed</c>, <c>pending</c>, or <c>reversed</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         #region Expandable Token
@@ -220,6 +303,9 @@ public Cardholder Cardholder
         /// will be null.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string TokenId
         {
             get => this.InternalToken?.Id;
@@ -235,6 +321,9 @@ public string TokenId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Token Token
         {
             get => this.InternalToken?.ExpandedObject;
@@ -243,6 +332,10 @@ public Token Token
 
         [JsonProperty("token")]
         [JsonConverter(typeof(ExpandableFieldConverter<Token>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("token")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Token>))]
+#endif
         internal ExpandableField<Token> InternalToken { get; set; }
         #endregion
 
@@ -251,6 +344,9 @@ public Token Token
         /// associated with this authorization.
         /// </summary>
         [JsonProperty("transactions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transactions")]
+#endif
         public List<Transaction> Transactions { get; set; }
 
         /// <summary>
@@ -259,9 +355,15 @@ public Token Token
         /// href="https://stripe.com/docs/api/treasury/financial_accounts">FinancialAccount</a>.
         /// </summary>
         [JsonProperty("treasury")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("treasury")]
+#endif
         public AuthorizationTreasury Treasury { get; set; }
 
         [JsonProperty("verification_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification_data")]
+#endif
         public AuthorizationVerificationData VerificationData { get; set; }
 
         /// <summary>
@@ -270,6 +372,9 @@ public Token Token
         /// same merchant.
         /// </summary>
         [JsonProperty("verified_by_fraud_challenge")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verified_by_fraud_challenge")]
+#endif
         public bool? VerifiedByFraudChallenge { get; set; }
 
         /// <summary>
@@ -278,6 +383,9 @@ public Token Token
         /// wallet was utilized.
         /// </summary>
         [JsonProperty("wallet")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wallet")]
+#endif
         public string Wallet { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationAmountDetails.cs b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationAmountDetails.cs
index 1c5c0d5a5c..f5ce29c386 100644
--- a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationAmountDetails.cs
+++ b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationAmountDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationAmountDetails : StripeEntity<AuthorizationAmountDetails>
     {
@@ -9,12 +12,18 @@ public class AuthorizationAmountDetails : StripeEntity<AuthorizationAmountDetail
         /// The fee charged by the ATM for the cash withdrawal.
         /// </summary>
         [JsonProperty("atm_fee")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("atm_fee")]
+#endif
         public long? AtmFee { get; set; }
 
         /// <summary>
         /// The amount of cash requested by the cardholder.
         /// </summary>
         [JsonProperty("cashback_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cashback_amount")]
+#endif
         public long? CashbackAmount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFleet.cs b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFleet.cs
index 83fb3818db..f60c831ccf 100644
--- a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFleet.cs
+++ b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFleet.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationFleet : StripeEntity<AuthorizationFleet>
     {
@@ -11,6 +14,9 @@ public class AuthorizationFleet : StripeEntity<AuthorizationFleet>
         /// support only numeric entry.
         /// </summary>
         [JsonProperty("cardholder_prompt_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder_prompt_data")]
+#endif
         public AuthorizationFleetCardholderPromptData CardholderPromptData { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class AuthorizationFleet : StripeEntity<AuthorizationFleet>
         /// <c>non_fuel_purchase</c>.
         /// </summary>
         [JsonProperty("purchase_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("purchase_type")]
+#endif
         public string PurchaseType { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class AuthorizationFleet : StripeEntity<AuthorizationFleet>
         /// data.
         /// </summary>
         [JsonProperty("reported_breakdown")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reported_breakdown")]
+#endif
         public AuthorizationFleetReportedBreakdown ReportedBreakdown { get; set; }
 
         /// <summary>
@@ -35,6 +47,9 @@ public class AuthorizationFleet : StripeEntity<AuthorizationFleet>
         /// One of: <c>full_service</c>, <c>non_fuel_transaction</c>, or <c>self_service</c>.
         /// </summary>
         [JsonProperty("service_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("service_type")]
+#endif
         public string ServiceType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFleetCardholderPromptData.cs b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFleetCardholderPromptData.cs
index b1894f273f..1116b35127 100644
--- a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFleetCardholderPromptData.cs
+++ b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFleetCardholderPromptData.cs
@@ -3,6 +3,9 @@ namespace Stripe.Issuing
 {
     using System;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationFleetCardholderPromptData : StripeEntity<AuthorizationFleetCardholderPromptData>
     {
@@ -13,18 +16,27 @@ public class AuthorizationFleetCardholderPromptData : StripeEntity<Authorization
         /// </summary>
         [Obsolete("This property is deprecated, please refer to the description for details.")]
         [JsonProperty("alphanumeric_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alphanumeric_id")]
+#endif
         public string AlphanumericId { get; set; }
 
         /// <summary>
         /// Driver ID.
         /// </summary>
         [JsonProperty("driver_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("driver_id")]
+#endif
         public string DriverId { get; set; }
 
         /// <summary>
         /// Odometer reading.
         /// </summary>
         [JsonProperty("odometer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("odometer")]
+#endif
         public long? Odometer { get; set; }
 
         /// <summary>
@@ -33,18 +45,27 @@ public class AuthorizationFleetCardholderPromptData : StripeEntity<Authorization
         /// type.
         /// </summary>
         [JsonProperty("unspecified_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unspecified_id")]
+#endif
         public string UnspecifiedId { get; set; }
 
         /// <summary>
         /// User ID.
         /// </summary>
         [JsonProperty("user_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_id")]
+#endif
         public string UserId { get; set; }
 
         /// <summary>
         /// Vehicle number.
         /// </summary>
         [JsonProperty("vehicle_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("vehicle_number")]
+#endif
         public string VehicleNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFleetReportedBreakdown.cs b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFleetReportedBreakdown.cs
index cd8f7e6a4f..1f663ee29f 100644
--- a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFleetReportedBreakdown.cs
+++ b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFleetReportedBreakdown.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationFleetReportedBreakdown : StripeEntity<AuthorizationFleetReportedBreakdown>
     {
@@ -9,18 +12,27 @@ public class AuthorizationFleetReportedBreakdown : StripeEntity<AuthorizationFle
         /// Breakdown of fuel portion of the purchase.
         /// </summary>
         [JsonProperty("fuel")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fuel")]
+#endif
         public AuthorizationFleetReportedBreakdownFuel Fuel { get; set; }
 
         /// <summary>
         /// Breakdown of non-fuel portion of the purchase.
         /// </summary>
         [JsonProperty("non_fuel")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("non_fuel")]
+#endif
         public AuthorizationFleetReportedBreakdownNonFuel NonFuel { get; set; }
 
         /// <summary>
         /// Information about tax included in this transaction.
         /// </summary>
         [JsonProperty("tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax")]
+#endif
         public AuthorizationFleetReportedBreakdownTax Tax { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFleetReportedBreakdownFuel.cs b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFleetReportedBreakdownFuel.cs
index de332ad003..8accbb6c4d 100644
--- a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFleetReportedBreakdownFuel.cs
+++ b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFleetReportedBreakdownFuel.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationFleetReportedBreakdownFuel : StripeEntity<AuthorizationFleetReportedBreakdownFuel>
     {
@@ -10,6 +13,9 @@ public class AuthorizationFleetReportedBreakdownFuel : StripeEntity<Authorizatio
         /// inclusive of taxes.
         /// </summary>
         [JsonProperty("gross_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gross_amount_decimal")]
+#endif
         public decimal? GrossAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFleetReportedBreakdownNonFuel.cs b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFleetReportedBreakdownNonFuel.cs
index ea9e587e1d..de122f4d96 100644
--- a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFleetReportedBreakdownNonFuel.cs
+++ b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFleetReportedBreakdownNonFuel.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationFleetReportedBreakdownNonFuel : StripeEntity<AuthorizationFleetReportedBreakdownNonFuel>
     {
@@ -9,6 +12,9 @@ public class AuthorizationFleetReportedBreakdownNonFuel : StripeEntity<Authoriza
         /// Gross non-fuel amount that should equal the sum of the line items, inclusive of taxes.
         /// </summary>
         [JsonProperty("gross_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gross_amount_decimal")]
+#endif
         public decimal? GrossAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFleetReportedBreakdownTax.cs b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFleetReportedBreakdownTax.cs
index 1df3bd345c..362b8f2059 100644
--- a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFleetReportedBreakdownTax.cs
+++ b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFleetReportedBreakdownTax.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationFleetReportedBreakdownTax : StripeEntity<AuthorizationFleetReportedBreakdownTax>
     {
@@ -10,6 +13,9 @@ public class AuthorizationFleetReportedBreakdownTax : StripeEntity<Authorization
         /// if not reported by merchant or not subject to tax.
         /// </summary>
         [JsonProperty("local_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("local_amount_decimal")]
+#endif
         public decimal? LocalAmountDecimal { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class AuthorizationFleetReportedBreakdownTax : StripeEntity<Authorization
         /// not reported by merchant or not subject to tax.
         /// </summary>
         [JsonProperty("national_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("national_amount_decimal")]
+#endif
         public decimal? NationalAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFraudChallenge.cs b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFraudChallenge.cs
index 7541abeed5..75109fb74c 100644
--- a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFraudChallenge.cs
+++ b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFraudChallenge.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationFraudChallenge : StripeEntity<AuthorizationFraudChallenge>
     {
@@ -9,6 +12,9 @@ public class AuthorizationFraudChallenge : StripeEntity<AuthorizationFraudChalle
         /// The method by which the fraud challenge was delivered to the cardholder.
         /// </summary>
         [JsonProperty("channel")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("channel")]
+#endif
         public string Channel { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class AuthorizationFraudChallenge : StripeEntity<AuthorizationFraudChalle
         /// <c>verified</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class AuthorizationFraudChallenge : StripeEntity<AuthorizationFraudChalle
         /// One of: <c>no_phone_number</c>, or <c>unsupported_phone_number</c>.
         /// </summary>
         [JsonProperty("undeliverable_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("undeliverable_reason")]
+#endif
         public string UndeliverableReason { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFuel.cs b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFuel.cs
index e360492e04..991f2d22a6 100644
--- a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFuel.cs
+++ b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationFuel.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationFuel : StripeEntity<AuthorizationFuel>
     {
@@ -10,6 +13,9 @@ public class AuthorizationFuel : StripeEntity<AuthorizationFuel>
         /// Payment System Product Code</a> identifying the primary fuel product purchased.
         /// </summary>
         [JsonProperty("industry_product_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("industry_product_code")]
+#endif
         public string IndustryProductCode { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class AuthorizationFuel : StripeEntity<AuthorizationFuel>
         /// with at most 12 decimal places.
         /// </summary>
         [JsonProperty("quantity_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity_decimal")]
+#endif
         public decimal? QuantityDecimal { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class AuthorizationFuel : StripeEntity<AuthorizationFuel>
         /// <c>unleaded_super</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
@@ -33,6 +45,9 @@ public class AuthorizationFuel : StripeEntity<AuthorizationFuel>
         /// <c>kilowatt_hour</c>, <c>liter</c>, <c>other</c>, <c>pound</c>, or <c>us_gallon</c>.
         /// </summary>
         [JsonProperty("unit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit")]
+#endif
         public string Unit { get; set; }
 
         /// <summary>
@@ -40,6 +55,9 @@ public class AuthorizationFuel : StripeEntity<AuthorizationFuel>
         /// decimal places.
         /// </summary>
         [JsonProperty("unit_cost_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_cost_decimal")]
+#endif
         public decimal? UnitCostDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationMerchantData.cs b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationMerchantData.cs
index 7f724d348b..4be6dd4b94 100644
--- a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationMerchantData.cs
+++ b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationMerchantData.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationMerchantData : StripeEntity<AuthorizationMerchantData>
     {
@@ -11,30 +14,45 @@ public class AuthorizationMerchantData : StripeEntity<AuthorizationMerchantData>
         /// for a list of possible values.
         /// </summary>
         [JsonProperty("category")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("category")]
+#endif
         public string Category { get; set; }
 
         /// <summary>
         /// The merchant category code for the seller’s business.
         /// </summary>
         [JsonProperty("category_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("category_code")]
+#endif
         public string CategoryCode { get; set; }
 
         /// <summary>
         /// City where the seller is located.
         /// </summary>
         [JsonProperty("city")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("city")]
+#endif
         public string City { get; set; }
 
         /// <summary>
         /// Country where the seller is located.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
         /// Name of the seller.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -42,36 +60,54 @@ public class AuthorizationMerchantData : StripeEntity<AuthorizationMerchantData>
         /// assign different network_id fields to the same merchant.
         /// </summary>
         [JsonProperty("network_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network_id")]
+#endif
         public string NetworkId { get; set; }
 
         /// <summary>
         /// Postal code where the seller is located.
         /// </summary>
         [JsonProperty("postal_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("postal_code")]
+#endif
         public string PostalCode { get; set; }
 
         /// <summary>
         /// State where the seller is located.
         /// </summary>
         [JsonProperty("state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("state")]
+#endif
         public string State { get; set; }
 
         /// <summary>
         /// The seller's tax identification number. Currently populated for French merchants only.
         /// </summary>
         [JsonProperty("tax_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_id")]
+#endif
         public string TaxId { get; set; }
 
         /// <summary>
         /// An ID assigned by the seller to the location of the sale.
         /// </summary>
         [JsonProperty("terminal_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("terminal_id")]
+#endif
         public string TerminalId { get; set; }
 
         /// <summary>
         /// URL provided by the merchant on a 3DS request.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationNetworkData.cs b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationNetworkData.cs
index c6a0430646..ec4df60df3 100644
--- a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationNetworkData.cs
+++ b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationNetworkData.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationNetworkData : StripeEntity<AuthorizationNetworkData>
     {
@@ -10,6 +13,9 @@ public class AuthorizationNetworkData : StripeEntity<AuthorizationNetworkData>
         /// provided by the network; in this case, the value will be <c>null</c>.
         /// </summary>
         [JsonProperty("acquiring_institution_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acquiring_institution_id")]
+#endif
         public string AcquiringInstitutionId { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class AuthorizationNetworkData : StripeEntity<AuthorizationNetworkData>
         /// requirements.
         /// </summary>
         [JsonProperty("system_trace_audit_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("system_trace_audit_number")]
+#endif
         public string SystemTraceAuditNumber { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class AuthorizationNetworkData : StripeEntity<AuthorizationNetworkData>
         /// subsequent messages, disputes, and transactions.
         /// </summary>
         [JsonProperty("transaction_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_id")]
+#endif
         public string TransactionId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationPendingRequest.cs b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationPendingRequest.cs
index 842596f075..869496eef7 100644
--- a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationPendingRequest.cs
+++ b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationPendingRequest.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationPendingRequest : StripeEntity<AuthorizationPendingRequest>
     {
@@ -13,6 +16,9 @@ public class AuthorizationPendingRequest : StripeEntity<AuthorizationPendingRequ
         /// unit</a>.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class AuthorizationPendingRequest : StripeEntity<AuthorizationPendingRequ
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("amount_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_details")]
+#endif
         public AuthorizationPendingRequestAmountDetails AmountDetails { get; set; }
 
         /// <summary>
@@ -29,6 +38,9 @@ public class AuthorizationPendingRequest : StripeEntity<AuthorizationPendingRequ
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -37,6 +49,9 @@ public class AuthorizationPendingRequest : StripeEntity<AuthorizationPendingRequ
         /// to control how much to hold for the authorization.
         /// </summary>
         [JsonProperty("is_amount_controllable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("is_amount_controllable")]
+#endif
         public bool IsAmountControllable { get; set; }
 
         /// <summary>
@@ -45,12 +60,18 @@ public class AuthorizationPendingRequest : StripeEntity<AuthorizationPendingRequ
         /// currency unit</a>.
         /// </summary>
         [JsonProperty("merchant_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("merchant_amount")]
+#endif
         public long MerchantAmount { get; set; }
 
         /// <summary>
         /// The local currency the merchant is requesting to authorize.
         /// </summary>
         [JsonProperty("merchant_currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("merchant_currency")]
+#endif
         public string MerchantCurrency { get; set; }
 
         /// <summary>
@@ -58,6 +79,9 @@ public class AuthorizationPendingRequest : StripeEntity<AuthorizationPendingRequ
         /// on values between 1 and 99.
         /// </summary>
         [JsonProperty("network_risk_score")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network_risk_score")]
+#endif
         public long? NetworkRiskScore { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationPendingRequestAmountDetails.cs b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationPendingRequestAmountDetails.cs
index be66037463..4f29f0027e 100644
--- a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationPendingRequestAmountDetails.cs
+++ b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationPendingRequestAmountDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationPendingRequestAmountDetails : StripeEntity<AuthorizationPendingRequestAmountDetails>
     {
@@ -9,12 +12,18 @@ public class AuthorizationPendingRequestAmountDetails : StripeEntity<Authorizati
         /// The fee charged by the ATM for the cash withdrawal.
         /// </summary>
         [JsonProperty("atm_fee")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("atm_fee")]
+#endif
         public long? AtmFee { get; set; }
 
         /// <summary>
         /// The amount of cash requested by the cardholder.
         /// </summary>
         [JsonProperty("cashback_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cashback_amount")]
+#endif
         public long? CashbackAmount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationRequestHistory.cs b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationRequestHistory.cs
index 98700be0c1..b3d026af98 100644
--- a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationRequestHistory.cs
+++ b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationRequestHistory.cs
@@ -4,6 +4,9 @@ namespace Stripe.Issuing
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationRequestHistory : StripeEntity<AuthorizationRequestHistory>
     {
@@ -14,6 +17,9 @@ public class AuthorizationRequestHistory : StripeEntity<AuthorizationRequestHist
         /// if the request was approved.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -22,12 +28,18 @@ public class AuthorizationRequestHistory : StripeEntity<AuthorizationRequestHist
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("amount_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_details")]
+#endif
         public AuthorizationRequestHistoryAmountDetails AmountDetails { get; set; }
 
         /// <summary>
         /// Whether this request was approved.
         /// </summary>
         [JsonProperty("approved")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("approved")]
+#endif
         public bool Approved { get; set; }
 
         /// <summary>
@@ -38,6 +50,9 @@ public class AuthorizationRequestHistory : StripeEntity<AuthorizationRequestHist
         /// authorizations.
         /// </summary>
         [JsonProperty("authorization_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("authorization_code")]
+#endif
         public string AuthorizationCode { get; set; }
 
         /// <summary>
@@ -45,6 +60,10 @@ public class AuthorizationRequestHistory : StripeEntity<AuthorizationRequestHist
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -53,6 +72,9 @@ public class AuthorizationRequestHistory : StripeEntity<AuthorizationRequestHist
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -61,6 +83,9 @@ public class AuthorizationRequestHistory : StripeEntity<AuthorizationRequestHist
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("merchant_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("merchant_amount")]
+#endif
         public long MerchantAmount { get; set; }
 
         /// <summary>
@@ -71,6 +96,9 @@ public class AuthorizationRequestHistory : StripeEntity<AuthorizationRequestHist
         /// currency</a>.
         /// </summary>
         [JsonProperty("merchant_currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("merchant_currency")]
+#endif
         public string MerchantCurrency { get; set; }
 
         /// <summary>
@@ -78,6 +106,9 @@ public class AuthorizationRequestHistory : StripeEntity<AuthorizationRequestHist
         /// on values between 1 and 99.
         /// </summary>
         [JsonProperty("network_risk_score")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network_risk_score")]
+#endif
         public long? NetworkRiskScore { get; set; }
 
         /// <summary>
@@ -92,6 +123,9 @@ public class AuthorizationRequestHistory : StripeEntity<AuthorizationRequestHist
         /// <c>webhook_error</c>, or <c>webhook_timeout</c>.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
 
         /// <summary>
@@ -100,6 +134,9 @@ public class AuthorizationRequestHistory : StripeEntity<AuthorizationRequestHist
         /// more detailed error message via this field.
         /// </summary>
         [JsonProperty("reason_message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason_message")]
+#endif
         public string ReasonMessage { get; set; }
 
         /// <summary>
@@ -108,6 +145,10 @@ public class AuthorizationRequestHistory : StripeEntity<AuthorizationRequestHist
         /// </summary>
         [JsonProperty("requested_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? RequestedAt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationRequestHistoryAmountDetails.cs b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationRequestHistoryAmountDetails.cs
index 7fc4931a10..380e683a1d 100644
--- a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationRequestHistoryAmountDetails.cs
+++ b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationRequestHistoryAmountDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationRequestHistoryAmountDetails : StripeEntity<AuthorizationRequestHistoryAmountDetails>
     {
@@ -9,12 +12,18 @@ public class AuthorizationRequestHistoryAmountDetails : StripeEntity<Authorizati
         /// The fee charged by the ATM for the cash withdrawal.
         /// </summary>
         [JsonProperty("atm_fee")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("atm_fee")]
+#endif
         public long? AtmFee { get; set; }
 
         /// <summary>
         /// The amount of cash requested by the cardholder.
         /// </summary>
         [JsonProperty("cashback_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cashback_amount")]
+#endif
         public long? CashbackAmount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationTreasury.cs b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationTreasury.cs
index 431e7df8cd..16ffd5e58e 100644
--- a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationTreasury.cs
+++ b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationTreasury.cs
@@ -3,6 +3,9 @@ namespace Stripe.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationTreasury : StripeEntity<AuthorizationTreasury>
     {
@@ -12,6 +15,9 @@ public class AuthorizationTreasury : StripeEntity<AuthorizationTreasury>
         /// associated with this authorization.
         /// </summary>
         [JsonProperty("received_credits")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("received_credits")]
+#endif
         public List<string> ReceivedCredits { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class AuthorizationTreasury : StripeEntity<AuthorizationTreasury>
         /// associated with this authorization.
         /// </summary>
         [JsonProperty("received_debits")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("received_debits")]
+#endif
         public List<string> ReceivedDebits { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class AuthorizationTreasury : StripeEntity<AuthorizationTreasury>
         /// associated with this authorization.
         /// </summary>
         [JsonProperty("transaction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction")]
+#endif
         public string Transaction { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationVerificationData.cs b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationVerificationData.cs
index ba0b6a6189..7e4c10585b 100644
--- a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationVerificationData.cs
+++ b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationVerificationData.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationVerificationData : StripeEntity<AuthorizationVerificationData>
     {
@@ -11,6 +14,9 @@ public class AuthorizationVerificationData : StripeEntity<AuthorizationVerificat
         /// One of: <c>match</c>, <c>mismatch</c>, or <c>not_provided</c>.
         /// </summary>
         [JsonProperty("address_line1_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_line1_check")]
+#endif
         public string AddressLine1Check { get; set; }
 
         /// <summary>
@@ -19,12 +25,18 @@ public class AuthorizationVerificationData : StripeEntity<AuthorizationVerificat
         /// One of: <c>match</c>, <c>mismatch</c>, or <c>not_provided</c>.
         /// </summary>
         [JsonProperty("address_postal_code_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_postal_code_check")]
+#endif
         public string AddressPostalCodeCheck { get; set; }
 
         /// <summary>
         /// The exemption applied to this authorization.
         /// </summary>
         [JsonProperty("authentication_exemption")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("authentication_exemption")]
+#endif
         public AuthorizationVerificationDataAuthenticationExemption AuthenticationExemption { get; set; }
 
         /// <summary>
@@ -32,6 +44,9 @@ public class AuthorizationVerificationData : StripeEntity<AuthorizationVerificat
         /// One of: <c>match</c>, <c>mismatch</c>, or <c>not_provided</c>.
         /// </summary>
         [JsonProperty("cvc_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cvc_check")]
+#endif
         public string CvcCheck { get; set; }
 
         /// <summary>
@@ -39,6 +54,9 @@ public class AuthorizationVerificationData : StripeEntity<AuthorizationVerificat
         /// One of: <c>match</c>, <c>mismatch</c>, or <c>not_provided</c>.
         /// </summary>
         [JsonProperty("expiry_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expiry_check")]
+#endif
         public string ExpiryCheck { get; set; }
 
         /// <summary>
@@ -46,12 +64,18 @@ public class AuthorizationVerificationData : StripeEntity<AuthorizationVerificat
         /// verification.
         /// </summary>
         [JsonProperty("postal_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("postal_code")]
+#endif
         public string PostalCode { get; set; }
 
         /// <summary>
         /// 3D Secure details.
         /// </summary>
         [JsonProperty("three_d_secure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("three_d_secure")]
+#endif
         public AuthorizationVerificationDataThreeDSecure ThreeDSecure { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationVerificationDataAuthenticationExemption.cs b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationVerificationDataAuthenticationExemption.cs
index 5a7959e661..6744d09fe8 100644
--- a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationVerificationDataAuthenticationExemption.cs
+++ b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationVerificationDataAuthenticationExemption.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationVerificationDataAuthenticationExemption : StripeEntity<AuthorizationVerificationDataAuthenticationExemption>
     {
@@ -11,6 +14,9 @@ public class AuthorizationVerificationDataAuthenticationExemption : StripeEntity
         /// One of: <c>acquirer</c>, or <c>issuer</c>.
         /// </summary>
         [JsonProperty("claimed_by")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("claimed_by")]
+#endif
         public string ClaimedBy { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class AuthorizationVerificationDataAuthenticationExemption : StripeEntity
         /// <c>unknown</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationVerificationDataThreeDSecure.cs b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationVerificationDataThreeDSecure.cs
index 3be0822ba6..5a2db53491 100644
--- a/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationVerificationDataThreeDSecure.cs
+++ b/src/Stripe.net/Entities/Issuing/Authorizations/AuthorizationVerificationDataThreeDSecure.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationVerificationDataThreeDSecure : StripeEntity<AuthorizationVerificationDataThreeDSecure>
     {
@@ -11,6 +14,9 @@ public class AuthorizationVerificationDataThreeDSecure : StripeEntity<Authorizat
         /// <c>required</c>.
         /// </summary>
         [JsonProperty("result")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("result")]
+#endif
         public string Result { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Cardholders/Cardholder.cs b/src/Stripe.net/Entities/Issuing/Cardholders/Cardholder.cs
index 9510751286..13a0930626 100644
--- a/src/Stripe.net/Entities/Issuing/Cardholders/Cardholder.cs
+++ b/src/Stripe.net/Entities/Issuing/Cardholders/Cardholder.cs
@@ -5,6 +5,9 @@ namespace Stripe.Issuing
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// An Issuing <c>Cardholder</c> object represents an individual or business entity who is
@@ -20,21 +23,33 @@ public class Cardholder : StripeEntity<Cardholder>, IHasId, IHasMetadata, IHasOb
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         [JsonProperty("billing")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing")]
+#endif
         public CardholderBilling Billing { get; set; }
 
         /// <summary>
         /// Additional information about a <c>company</c> cardholder.
         /// </summary>
         [JsonProperty("company")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("company")]
+#endif
         public CardholderCompany Company { get; set; }
 
         /// <summary>
@@ -42,18 +57,28 @@ public class Cardholder : StripeEntity<Cardholder>, IHasId, IHasMetadata, IHasOb
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// The cardholder's email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// Additional information about an <c>individual</c> cardholder.
         /// </summary>
         [JsonProperty("individual")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("individual")]
+#endif
         public CardholderIndividual Individual { get; set; }
 
         /// <summary>
@@ -61,6 +86,9 @@ public class Cardholder : StripeEntity<Cardholder>, IHasId, IHasMetadata, IHasOb
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -69,12 +97,18 @@ public class Cardholder : StripeEntity<Cardholder>, IHasId, IHasMetadata, IHasOb
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The cardholder's name. This will be printed on cards issued to them.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -84,6 +118,9 @@ public class Cardholder : StripeEntity<Cardholder>, IHasId, IHasMetadata, IHasOb
         /// documentation</a> for more details.
         /// </summary>
         [JsonProperty("phone_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone_number")]
+#endif
         public string PhoneNumber { get; set; }
 
         /// <summary>
@@ -94,9 +131,15 @@ public class Cardholder : StripeEntity<Cardholder>, IHasId, IHasMetadata, IHasOb
         /// One of: <c>de</c>, <c>en</c>, <c>es</c>, <c>fr</c>, or <c>it</c>.
         /// </summary>
         [JsonProperty("preferred_locales")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_locales")]
+#endif
         public List<string> PreferredLocales { get; set; }
 
         [JsonProperty("requirements")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requirements")]
+#endif
         public CardholderRequirements Requirements { get; set; }
 
         /// <summary>
@@ -105,6 +148,9 @@ public class Cardholder : StripeEntity<Cardholder>, IHasId, IHasMetadata, IHasOb
         /// more details.
         /// </summary>
         [JsonProperty("spending_controls")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("spending_controls")]
+#endif
         public CardholderSpendingControls SpendingControls { get; set; }
 
         /// <summary>
@@ -112,6 +158,9 @@ public class Cardholder : StripeEntity<Cardholder>, IHasId, IHasMetadata, IHasOb
         /// One of: <c>active</c>, <c>blocked</c>, or <c>inactive</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -121,6 +170,9 @@ public class Cardholder : StripeEntity<Cardholder>, IHasId, IHasMetadata, IHasOb
         /// One of: <c>company</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Cardholders/CardholderBilling.cs b/src/Stripe.net/Entities/Issuing/Cardholders/CardholderBilling.cs
index ca62b820ea..41b6608771 100644
--- a/src/Stripe.net/Entities/Issuing/Cardholders/CardholderBilling.cs
+++ b/src/Stripe.net/Entities/Issuing/Cardholders/CardholderBilling.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardholderBilling : StripeEntity<CardholderBilling>
     {
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public Address Address { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Cardholders/CardholderCompany.cs b/src/Stripe.net/Entities/Issuing/Cardholders/CardholderCompany.cs
index 91607e3035..a31585d8c0 100644
--- a/src/Stripe.net/Entities/Issuing/Cardholders/CardholderCompany.cs
+++ b/src/Stripe.net/Entities/Issuing/Cardholders/CardholderCompany.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardholderCompany : StripeEntity<CardholderCompany>
     {
@@ -9,6 +12,9 @@ public class CardholderCompany : StripeEntity<CardholderCompany>
         /// Whether the company's business ID number was provided.
         /// </summary>
         [JsonProperty("tax_id_provided")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_id_provided")]
+#endif
         public bool TaxIdProvided { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Cardholders/CardholderIndividual.cs b/src/Stripe.net/Entities/Issuing/Cardholders/CardholderIndividual.cs
index 318741c93a..dd55779c59 100644
--- a/src/Stripe.net/Entities/Issuing/Cardholders/CardholderIndividual.cs
+++ b/src/Stripe.net/Entities/Issuing/Cardholders/CardholderIndividual.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardholderIndividual : StripeEntity<CardholderIndividual>
     {
@@ -9,12 +12,18 @@ public class CardholderIndividual : StripeEntity<CardholderIndividual>
         /// Information related to the card_issuing program for this cardholder.
         /// </summary>
         [JsonProperty("card_issuing")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_issuing")]
+#endif
         public CardholderIndividualCardIssuing CardIssuing { get; set; }
 
         /// <summary>
         /// The date of birth of this cardholder.
         /// </summary>
         [JsonProperty("dob")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dob")]
+#endif
         public CardholderIndividualDob Dob { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class CardholderIndividual : StripeEntity<CardholderIndividual>
         /// apostrophes) or non-latin letters.
         /// </summary>
         [JsonProperty("first_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_name")]
+#endif
         public string FirstName { get; set; }
 
         /// <summary>
@@ -31,12 +43,18 @@ public class CardholderIndividual : StripeEntity<CardholderIndividual>
         /// apostrophes) or non-latin letters.
         /// </summary>
         [JsonProperty("last_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_name")]
+#endif
         public string LastName { get; set; }
 
         /// <summary>
         /// Government-issued ID document for this cardholder.
         /// </summary>
         [JsonProperty("verification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification")]
+#endif
         public CardholderIndividualVerification Verification { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Cardholders/CardholderIndividualCardIssuing.cs b/src/Stripe.net/Entities/Issuing/Cardholders/CardholderIndividualCardIssuing.cs
index 1826e8f22a..8bbfeb8775 100644
--- a/src/Stripe.net/Entities/Issuing/Cardholders/CardholderIndividualCardIssuing.cs
+++ b/src/Stripe.net/Entities/Issuing/Cardholders/CardholderIndividualCardIssuing.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardholderIndividualCardIssuing : StripeEntity<CardholderIndividualCardIssuing>
     {
@@ -11,6 +14,9 @@ public class CardholderIndividualCardIssuing : StripeEntity<CardholderIndividual
         /// User Terms</a>. Required for cards backed by a Celtic program.
         /// </summary>
         [JsonProperty("user_terms_acceptance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_terms_acceptance")]
+#endif
         public CardholderIndividualCardIssuingUserTermsAcceptance UserTermsAcceptance { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Cardholders/CardholderIndividualCardIssuingUserTermsAcceptance.cs b/src/Stripe.net/Entities/Issuing/Cardholders/CardholderIndividualCardIssuingUserTermsAcceptance.cs
index 2bc384fc27..09ce2a18c7 100644
--- a/src/Stripe.net/Entities/Issuing/Cardholders/CardholderIndividualCardIssuingUserTermsAcceptance.cs
+++ b/src/Stripe.net/Entities/Issuing/Cardholders/CardholderIndividualCardIssuingUserTermsAcceptance.cs
@@ -4,6 +4,9 @@ namespace Stripe.Issuing
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardholderIndividualCardIssuingUserTermsAcceptance : StripeEntity<CardholderIndividualCardIssuingUserTermsAcceptance>
     {
@@ -12,12 +15,19 @@ public class CardholderIndividualCardIssuingUserTermsAcceptance : StripeEntity<C
         /// </summary>
         [JsonProperty("date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? Date { get; set; }
 
         /// <summary>
         /// The IP address from which the cardholder accepted the Authorized User Terms.
         /// </summary>
         [JsonProperty("ip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip")]
+#endif
         public string Ip { get; set; }
 
         /// <summary>
@@ -25,6 +35,9 @@ public class CardholderIndividualCardIssuingUserTermsAcceptance : StripeEntity<C
         /// Terms.
         /// </summary>
         [JsonProperty("user_agent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_agent")]
+#endif
         public string UserAgent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Cardholders/CardholderIndividualDob.cs b/src/Stripe.net/Entities/Issuing/Cardholders/CardholderIndividualDob.cs
index 5c2274c3c7..fa2c1f3f97 100644
--- a/src/Stripe.net/Entities/Issuing/Cardholders/CardholderIndividualDob.cs
+++ b/src/Stripe.net/Entities/Issuing/Cardholders/CardholderIndividualDob.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardholderIndividualDob : StripeEntity<CardholderIndividualDob>
     {
@@ -9,18 +12,27 @@ public class CardholderIndividualDob : StripeEntity<CardholderIndividualDob>
         /// The day of birth, between 1 and 31.
         /// </summary>
         [JsonProperty("day")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("day")]
+#endif
         public long? Day { get; set; }
 
         /// <summary>
         /// The month of birth, between 1 and 12.
         /// </summary>
         [JsonProperty("month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("month")]
+#endif
         public long? Month { get; set; }
 
         /// <summary>
         /// The four-digit year of birth.
         /// </summary>
         [JsonProperty("year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("year")]
+#endif
         public long? Year { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Cardholders/CardholderIndividualVerification.cs b/src/Stripe.net/Entities/Issuing/Cardholders/CardholderIndividualVerification.cs
index a934803902..74d5273805 100644
--- a/src/Stripe.net/Entities/Issuing/Cardholders/CardholderIndividualVerification.cs
+++ b/src/Stripe.net/Entities/Issuing/Cardholders/CardholderIndividualVerification.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardholderIndividualVerification : StripeEntity<CardholderIndividualVerification>
     {
@@ -9,6 +12,9 @@ public class CardholderIndividualVerification : StripeEntity<CardholderIndividua
         /// An identifying document, either a passport or local ID card.
         /// </summary>
         [JsonProperty("document")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("document")]
+#endif
         public CardholderIndividualVerificationDocument Document { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Cardholders/CardholderIndividualVerificationDocument.cs b/src/Stripe.net/Entities/Issuing/Cardholders/CardholderIndividualVerificationDocument.cs
index 60e219a288..2f636191d8 100644
--- a/src/Stripe.net/Entities/Issuing/Cardholders/CardholderIndividualVerificationDocument.cs
+++ b/src/Stripe.net/Entities/Issuing/Cardholders/CardholderIndividualVerificationDocument.cs
@@ -3,7 +3,13 @@ namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class CardholderIndividualVerificationDocument : StripeEntity<CardholderIndividualVerificationDocument>
     {
         #region Expandable Back
@@ -15,6 +21,9 @@ public class CardholderIndividualVerificationDocument : StripeEntity<CardholderI
         /// value of <c>identity_document</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string BackId
         {
             get => this.InternalBack?.Id;
@@ -30,6 +39,9 @@ public string BackId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File Back
         {
             get => this.InternalBack?.ExpandedObject;
@@ -38,6 +50,10 @@ public File Back
 
         [JsonProperty("back")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("back")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalBack { get; set; }
         #endregion
 
@@ -50,6 +66,9 @@ public File Back
         /// value of <c>identity_document</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string FrontId
         {
             get => this.InternalFront?.Id;
@@ -65,6 +84,9 @@ public string FrontId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File Front
         {
             get => this.InternalFront?.ExpandedObject;
@@ -73,6 +95,10 @@ public File Front
 
         [JsonProperty("front")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("front")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalFront { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Issuing/Cardholders/CardholderRequirements.cs b/src/Stripe.net/Entities/Issuing/Cardholders/CardholderRequirements.cs
index 59bc79e78a..e23a715a73 100644
--- a/src/Stripe.net/Entities/Issuing/Cardholders/CardholderRequirements.cs
+++ b/src/Stripe.net/Entities/Issuing/Cardholders/CardholderRequirements.cs
@@ -3,6 +3,9 @@ namespace Stripe.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardholderRequirements : StripeEntity<CardholderRequirements>
     {
@@ -13,6 +16,9 @@ public class CardholderRequirements : StripeEntity<CardholderRequirements>
         /// <c>under_review</c>.
         /// </summary>
         [JsonProperty("disabled_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("disabled_reason")]
+#endif
         public string DisabledReason { get; set; }
 
         /// <summary>
@@ -25,6 +31,9 @@ public class CardholderRequirements : StripeEntity<CardholderRequirements>
         /// <c>individual.last_name</c>, or <c>individual.verification.document</c>.
         /// </summary>
         [JsonProperty("past_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("past_due")]
+#endif
         public List<string> PastDue { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Cardholders/CardholderSpendingControls.cs b/src/Stripe.net/Entities/Issuing/Cardholders/CardholderSpendingControls.cs
index 1ebad8ecd5..bd4bbf5a4d 100644
--- a/src/Stripe.net/Entities/Issuing/Cardholders/CardholderSpendingControls.cs
+++ b/src/Stripe.net/Entities/Issuing/Cardholders/CardholderSpendingControls.cs
@@ -3,6 +3,9 @@ namespace Stripe.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardholderSpendingControls : StripeEntity<CardholderSpendingControls>
     {
@@ -158,6 +161,9 @@ public class CardholderSpendingControls : StripeEntity<CardholderSpendingControl
         /// <c>wrecking_and_salvage_yards</c>.
         /// </summary>
         [JsonProperty("allowed_categories")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allowed_categories")]
+#endif
         public List<string> AllowedCategories { get; set; }
 
         /// <summary>
@@ -167,6 +173,9 @@ public class CardholderSpendingControls : StripeEntity<CardholderSpendingControl
         /// <c>blocked_merchant_countries</c>. Provide an empty value to unset this control.
         /// </summary>
         [JsonProperty("allowed_merchant_countries")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allowed_merchant_countries")]
+#endif
         public List<string> AllowedMerchantCountries { get; set; }
 
         /// <summary>
@@ -321,6 +330,9 @@ public class CardholderSpendingControls : StripeEntity<CardholderSpendingControl
         /// <c>wrecking_and_salvage_yards</c>.
         /// </summary>
         [JsonProperty("blocked_categories")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("blocked_categories")]
+#endif
         public List<string> BlockedCategories { get; set; }
 
         /// <summary>
@@ -330,18 +342,27 @@ public class CardholderSpendingControls : StripeEntity<CardholderSpendingControl
         /// this control.
         /// </summary>
         [JsonProperty("blocked_merchant_countries")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("blocked_merchant_countries")]
+#endif
         public List<string> BlockedMerchantCountries { get; set; }
 
         /// <summary>
         /// Limit spending with amount-based rules that apply across this cardholder's cards.
         /// </summary>
         [JsonProperty("spending_limits")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("spending_limits")]
+#endif
         public List<CardholderSpendingControlsSpendingLimit> SpendingLimits { get; set; }
 
         /// <summary>
         /// Currency of the amounts within <c>spending_limits</c>.
         /// </summary>
         [JsonProperty("spending_limits_currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("spending_limits_currency")]
+#endif
         public string SpendingLimitsCurrency { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Cardholders/CardholderSpendingControlsSpendingLimit.cs b/src/Stripe.net/Entities/Issuing/Cardholders/CardholderSpendingControlsSpendingLimit.cs
index 041d3b8b7e..4275211ef8 100644
--- a/src/Stripe.net/Entities/Issuing/Cardholders/CardholderSpendingControlsSpendingLimit.cs
+++ b/src/Stripe.net/Entities/Issuing/Cardholders/CardholderSpendingControlsSpendingLimit.cs
@@ -3,6 +3,9 @@ namespace Stripe.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardholderSpendingControlsSpendingLimit : StripeEntity<CardholderSpendingControlsSpendingLimit>
     {
@@ -12,6 +15,9 @@ public class CardholderSpendingControlsSpendingLimit : StripeEntity<CardholderSp
         /// unit</a>.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -165,6 +171,9 @@ public class CardholderSpendingControlsSpendingLimit : StripeEntity<CardholderSp
         /// <c>wrecking_and_salvage_yards</c>.
         /// </summary>
         [JsonProperty("categories")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("categories")]
+#endif
         public List<string> Categories { get; set; }
 
         /// <summary>
@@ -173,6 +182,9 @@ public class CardholderSpendingControlsSpendingLimit : StripeEntity<CardholderSp
         /// <c>weekly</c>, or <c>yearly</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Cards/Card.cs b/src/Stripe.net/Entities/Issuing/Cards/Card.cs
index 37f46fbb3f..4a9f225dfa 100644
--- a/src/Stripe.net/Entities/Issuing/Cards/Card.cs
+++ b/src/Stripe.net/Entities/Issuing/Cards/Card.cs
@@ -5,29 +5,44 @@ namespace Stripe.Issuing
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// You can <a href="https://stripe.com/docs/issuing">create physical or virtual cards</a>
     /// that are issued to cardholders.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class Card : StripeEntity<Card>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// The brand of the card.
         /// </summary>
         [JsonProperty("brand")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brand")]
+#endif
         public string Brand { get; set; }
 
         /// <summary>
@@ -35,6 +50,9 @@ public class Card : StripeEntity<Card>, IHasId, IHasMetadata, IHasObject
         /// One of: <c>design_rejected</c>, <c>lost</c>, or <c>stolen</c>.
         /// </summary>
         [JsonProperty("cancellation_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancellation_reason")]
+#endif
         public string CancellationReason { get; set; }
 
         /// <summary>
@@ -46,6 +64,9 @@ public class Card : StripeEntity<Card>, IHasId, IHasMetadata, IHasObject
         /// to create a cardholder</a>.
         /// </summary>
         [JsonProperty("cardholder")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder")]
+#endif
         public Cardholder Cardholder { get; set; }
 
         /// <summary>
@@ -53,6 +74,10 @@ public class Card : StripeEntity<Card>, IHasId, IHasMetadata, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -61,6 +86,9 @@ public class Card : StripeEntity<Card>, IHasId, IHasMetadata, IHasObject
         /// EU, and <c>gbp</c> in the UK.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -72,30 +100,45 @@ public class Card : StripeEntity<Card>, IHasId, IHasMetadata, IHasObject
         /// endpoint</a>, not via "List all cards" or any other endpoint.
         /// </summary>
         [JsonProperty("cvc")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cvc")]
+#endif
         public string Cvc { get; set; }
 
         /// <summary>
         /// The expiration month of the card.
         /// </summary>
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public long ExpMonth { get; set; }
 
         /// <summary>
         /// The expiration year of the card.
         /// </summary>
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public long ExpYear { get; set; }
 
         /// <summary>
         /// The financial account this card is attached to.
         /// </summary>
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public string FinancialAccount { get; set; }
 
         /// <summary>
         /// The last 4 digits of the card number.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
@@ -103,6 +146,9 @@ public class Card : StripeEntity<Card>, IHasId, IHasMetadata, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -111,6 +157,9 @@ public class Card : StripeEntity<Card>, IHasId, IHasMetadata, IHasObject
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -122,6 +171,9 @@ public class Card : StripeEntity<Card>, IHasId, IHasMetadata, IHasObject
         /// endpoint</a>, not via "List all cards" or any other endpoint.
         /// </summary>
         [JsonProperty("number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("number")]
+#endif
         public string Number { get; set; }
 
         #region Expandable PersonalizationDesign
@@ -131,6 +183,9 @@ public class Card : StripeEntity<Card>, IHasId, IHasMetadata, IHasObject
         /// The personalization design object belonging to this card.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string PersonalizationDesignId
         {
             get => this.InternalPersonalizationDesign?.Id;
@@ -144,6 +199,9 @@ public string PersonalizationDesignId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PersonalizationDesign PersonalizationDesign
         {
             get => this.InternalPersonalizationDesign?.ExpandedObject;
@@ -152,6 +210,10 @@ public PersonalizationDesign PersonalizationDesign
 
         [JsonProperty("personalization_design")]
         [JsonConverter(typeof(ExpandableFieldConverter<PersonalizationDesign>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("personalization_design")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PersonalizationDesign>))]
+#endif
         internal ExpandableField<PersonalizationDesign> InternalPersonalizationDesign { get; set; }
         #endregion
 
@@ -162,6 +224,9 @@ public PersonalizationDesign PersonalizationDesign
         /// The latest card that replaces this card, if any.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ReplacedById
         {
             get => this.InternalReplacedBy?.Id;
@@ -175,6 +240,9 @@ public string ReplacedById
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Card ReplacedBy
         {
             get => this.InternalReplacedBy?.ExpandedObject;
@@ -183,6 +251,10 @@ public Card ReplacedBy
 
         [JsonProperty("replaced_by")]
         [JsonConverter(typeof(ExpandableFieldConverter<Card>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("replaced_by")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Card>))]
+#endif
         internal ExpandableField<Card> InternalReplacedBy { get; set; }
         #endregion
 
@@ -193,6 +265,9 @@ public Card ReplacedBy
         /// The card this card replaces, if any.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ReplacementForId
         {
             get => this.InternalReplacementFor?.Id;
@@ -206,6 +281,9 @@ public string ReplacementForId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Card ReplacementFor
         {
             get => this.InternalReplacementFor?.ExpandedObject;
@@ -214,6 +292,10 @@ public Card ReplacementFor
 
         [JsonProperty("replacement_for")]
         [JsonConverter(typeof(ExpandableFieldConverter<Card>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("replacement_for")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Card>))]
+#endif
         internal ExpandableField<Card> InternalReplacementFor { get; set; }
         #endregion
 
@@ -222,15 +304,24 @@ public Card ReplacementFor
         /// One of: <c>damaged</c>, <c>expired</c>, <c>lost</c>, or <c>stolen</c>.
         /// </summary>
         [JsonProperty("replacement_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("replacement_reason")]
+#endif
         public string ReplacementReason { get; set; }
 
         /// <summary>
         /// Where and how the card will be shipped.
         /// </summary>
         [JsonProperty("shipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping")]
+#endif
         public CardShipping Shipping { get; set; }
 
         [JsonProperty("spending_controls")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("spending_controls")]
+#endif
         public CardSpendingControls SpendingControls { get; set; }
 
         /// <summary>
@@ -239,6 +330,9 @@ public Card ReplacementFor
         /// One of: <c>active</c>, <c>canceled</c>, or <c>inactive</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -246,12 +340,18 @@ public Card ReplacementFor
         /// One of: <c>physical</c>, or <c>virtual</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
         /// Information relating to digital wallets (like Apple Pay and Google Pay).
         /// </summary>
         [JsonProperty("wallets")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wallets")]
+#endif
         public CardWallets Wallets { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Cards/CardShipping.cs b/src/Stripe.net/Entities/Issuing/Cards/CardShipping.cs
index ee94f54dd7..4293d02be0 100644
--- a/src/Stripe.net/Entities/Issuing/Cards/CardShipping.cs
+++ b/src/Stripe.net/Entities/Issuing/Cards/CardShipping.cs
@@ -4,16 +4,25 @@ namespace Stripe.Issuing
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardShipping : StripeEntity<CardShipping>
     {
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public Address Address { get; set; }
 
         /// <summary>
         /// Address validation details for the shipment.
         /// </summary>
         [JsonProperty("address_validation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_validation")]
+#endif
         public CardShippingAddressValidation AddressValidation { get; set; }
 
         /// <summary>
@@ -21,12 +30,18 @@ public class CardShipping : StripeEntity<CardShipping>
         /// One of: <c>dhl</c>, <c>fedex</c>, <c>royal_mail</c>, or <c>usps</c>.
         /// </summary>
         [JsonProperty("carrier")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("carrier")]
+#endif
         public string Carrier { get; set; }
 
         /// <summary>
         /// Additional information that may be required for clearing customs.
         /// </summary>
         [JsonProperty("customs")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customs")]
+#endif
         public CardShippingCustoms Customs { get; set; }
 
         /// <summary>
@@ -34,12 +49,19 @@ public class CardShipping : StripeEntity<CardShipping>
         /// </summary>
         [JsonProperty("eta")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eta")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? Eta { get; set; }
 
         /// <summary>
         /// Recipient name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -49,6 +71,9 @@ public class CardShipping : StripeEntity<CardShipping>
         /// when the cardholder was initially created.
         /// </summary>
         [JsonProperty("phone_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone_number")]
+#endif
         public string PhoneNumber { get; set; }
 
         /// <summary>
@@ -58,6 +83,9 @@ public class CardShipping : StripeEntity<CardShipping>
         /// true.
         /// </summary>
         [JsonProperty("require_signature")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("require_signature")]
+#endif
         public bool? RequireSignature { get; set; }
 
         /// <summary>
@@ -65,6 +93,9 @@ public class CardShipping : StripeEntity<CardShipping>
         /// One of: <c>express</c>, <c>priority</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("service")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("service")]
+#endif
         public string Service { get; set; }
 
         /// <summary>
@@ -73,12 +104,18 @@ public class CardShipping : StripeEntity<CardShipping>
         /// <c>returned</c>, <c>shipped</c>, or <c>submitted</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
         /// A tracking number for a card shipment.
         /// </summary>
         [JsonProperty("tracking_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tracking_number")]
+#endif
         public string TrackingNumber { get; set; }
 
         /// <summary>
@@ -86,6 +123,9 @@ public class CardShipping : StripeEntity<CardShipping>
         /// card shipment.
         /// </summary>
         [JsonProperty("tracking_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tracking_url")]
+#endif
         public string TrackingUrl { get; set; }
 
         /// <summary>
@@ -93,6 +133,9 @@ public class CardShipping : StripeEntity<CardShipping>
         /// One of: <c>bulk</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Cards/CardShippingAddressValidation.cs b/src/Stripe.net/Entities/Issuing/Cards/CardShippingAddressValidation.cs
index da01e67e41..89b5a0f038 100644
--- a/src/Stripe.net/Entities/Issuing/Cards/CardShippingAddressValidation.cs
+++ b/src/Stripe.net/Entities/Issuing/Cards/CardShippingAddressValidation.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardShippingAddressValidation : StripeEntity<CardShippingAddressValidation>
     {
@@ -11,12 +14,18 @@ public class CardShippingAddressValidation : StripeEntity<CardShippingAddressVal
         /// <c>validation_and_normalization</c>.
         /// </summary>
         [JsonProperty("mode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mode")]
+#endif
         public string Mode { get; set; }
 
         /// <summary>
         /// The normalized shipping address.
         /// </summary>
         [JsonProperty("normalized_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("normalized_address")]
+#endif
         public Address NormalizedAddress { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class CardShippingAddressValidation : StripeEntity<CardShippingAddressVal
         /// One of: <c>indeterminate</c>, <c>likely_deliverable</c>, or <c>likely_undeliverable</c>.
         /// </summary>
         [JsonProperty("result")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("result")]
+#endif
         public string Result { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Cards/CardShippingCustoms.cs b/src/Stripe.net/Entities/Issuing/Cards/CardShippingCustoms.cs
index 330900e32b..ec3919e11f 100644
--- a/src/Stripe.net/Entities/Issuing/Cards/CardShippingCustoms.cs
+++ b/src/Stripe.net/Entities/Issuing/Cards/CardShippingCustoms.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardShippingCustoms : StripeEntity<CardShippingCustoms>
     {
@@ -12,6 +15,9 @@ public class CardShippingCustoms : StripeEntity<CardShippingCustoms>
         /// for the EU.
         /// </summary>
         [JsonProperty("eori_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eori_number")]
+#endif
         public string EoriNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Cards/CardSpendingControls.cs b/src/Stripe.net/Entities/Issuing/Cards/CardSpendingControls.cs
index 47fd46dcde..8e391c48e6 100644
--- a/src/Stripe.net/Entities/Issuing/Cards/CardSpendingControls.cs
+++ b/src/Stripe.net/Entities/Issuing/Cards/CardSpendingControls.cs
@@ -3,6 +3,9 @@ namespace Stripe.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardSpendingControls : StripeEntity<CardSpendingControls>
     {
@@ -158,6 +161,9 @@ public class CardSpendingControls : StripeEntity<CardSpendingControls>
         /// <c>wrecking_and_salvage_yards</c>.
         /// </summary>
         [JsonProperty("allowed_categories")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allowed_categories")]
+#endif
         public List<string> AllowedCategories { get; set; }
 
         /// <summary>
@@ -167,6 +173,9 @@ public class CardSpendingControls : StripeEntity<CardSpendingControls>
         /// <c>blocked_merchant_countries</c>. Provide an empty value to unset this control.
         /// </summary>
         [JsonProperty("allowed_merchant_countries")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allowed_merchant_countries")]
+#endif
         public List<string> AllowedMerchantCountries { get; set; }
 
         /// <summary>
@@ -321,6 +330,9 @@ public class CardSpendingControls : StripeEntity<CardSpendingControls>
         /// <c>wrecking_and_salvage_yards</c>.
         /// </summary>
         [JsonProperty("blocked_categories")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("blocked_categories")]
+#endif
         public List<string> BlockedCategories { get; set; }
 
         /// <summary>
@@ -330,6 +342,9 @@ public class CardSpendingControls : StripeEntity<CardSpendingControls>
         /// this control.
         /// </summary>
         [JsonProperty("blocked_merchant_countries")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("blocked_merchant_countries")]
+#endif
         public List<string> BlockedMerchantCountries { get; set; }
 
         /// <summary>
@@ -338,6 +353,9 @@ public class CardSpendingControls : StripeEntity<CardSpendingControls>
         /// card, up the chain).
         /// </summary>
         [JsonProperty("spending_limits")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("spending_limits")]
+#endif
         public List<CardSpendingControlsSpendingLimit> SpendingLimits { get; set; }
 
         /// <summary>
@@ -345,6 +363,9 @@ public class CardSpendingControls : StripeEntity<CardSpendingControls>
         /// of the card.
         /// </summary>
         [JsonProperty("spending_limits_currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("spending_limits_currency")]
+#endif
         public string SpendingLimitsCurrency { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Cards/CardSpendingControlsSpendingLimit.cs b/src/Stripe.net/Entities/Issuing/Cards/CardSpendingControlsSpendingLimit.cs
index 263746c9be..e561012012 100644
--- a/src/Stripe.net/Entities/Issuing/Cards/CardSpendingControlsSpendingLimit.cs
+++ b/src/Stripe.net/Entities/Issuing/Cards/CardSpendingControlsSpendingLimit.cs
@@ -3,6 +3,9 @@ namespace Stripe.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardSpendingControlsSpendingLimit : StripeEntity<CardSpendingControlsSpendingLimit>
     {
@@ -12,6 +15,9 @@ public class CardSpendingControlsSpendingLimit : StripeEntity<CardSpendingContro
         /// unit</a>.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -165,6 +171,9 @@ public class CardSpendingControlsSpendingLimit : StripeEntity<CardSpendingContro
         /// <c>wrecking_and_salvage_yards</c>.
         /// </summary>
         [JsonProperty("categories")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("categories")]
+#endif
         public List<string> Categories { get; set; }
 
         /// <summary>
@@ -173,6 +182,9 @@ public class CardSpendingControlsSpendingLimit : StripeEntity<CardSpendingContro
         /// <c>weekly</c>, or <c>yearly</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Cards/CardWallets.cs b/src/Stripe.net/Entities/Issuing/Cards/CardWallets.cs
index 122a5e3fad..e88793161a 100644
--- a/src/Stripe.net/Entities/Issuing/Cards/CardWallets.cs
+++ b/src/Stripe.net/Entities/Issuing/Cards/CardWallets.cs
@@ -2,19 +2,31 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardWallets : StripeEntity<CardWallets>
     {
         [JsonProperty("apple_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("apple_pay")]
+#endif
         public CardWalletsApplePay ApplePay { get; set; }
 
         [JsonProperty("google_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("google_pay")]
+#endif
         public CardWalletsGooglePay GooglePay { get; set; }
 
         /// <summary>
         /// Unique identifier for a card used with digital wallets.
         /// </summary>
         [JsonProperty("primary_account_identifier")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("primary_account_identifier")]
+#endif
         public string PrimaryAccountIdentifier { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Cards/CardWalletsApplePay.cs b/src/Stripe.net/Entities/Issuing/Cards/CardWalletsApplePay.cs
index 23000668b8..5c3e694210 100644
--- a/src/Stripe.net/Entities/Issuing/Cards/CardWalletsApplePay.cs
+++ b/src/Stripe.net/Entities/Issuing/Cards/CardWalletsApplePay.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardWalletsApplePay : StripeEntity<CardWalletsApplePay>
     {
@@ -9,6 +12,9 @@ public class CardWalletsApplePay : StripeEntity<CardWalletsApplePay>
         /// Apple Pay Eligibility.
         /// </summary>
         [JsonProperty("eligible")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eligible")]
+#endif
         public bool Eligible { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class CardWalletsApplePay : StripeEntity<CardWalletsApplePay>
         /// <c>unsupported_region</c>.
         /// </summary>
         [JsonProperty("ineligible_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ineligible_reason")]
+#endif
         public string IneligibleReason { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Cards/CardWalletsGooglePay.cs b/src/Stripe.net/Entities/Issuing/Cards/CardWalletsGooglePay.cs
index bfb606aa88..31c92229f5 100644
--- a/src/Stripe.net/Entities/Issuing/Cards/CardWalletsGooglePay.cs
+++ b/src/Stripe.net/Entities/Issuing/Cards/CardWalletsGooglePay.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardWalletsGooglePay : StripeEntity<CardWalletsGooglePay>
     {
@@ -9,6 +12,9 @@ public class CardWalletsGooglePay : StripeEntity<CardWalletsGooglePay>
         /// Google Pay Eligibility.
         /// </summary>
         [JsonProperty("eligible")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eligible")]
+#endif
         public bool Eligible { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class CardWalletsGooglePay : StripeEntity<CardWalletsGooglePay>
         /// <c>unsupported_region</c>.
         /// </summary>
         [JsonProperty("ineligible_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ineligible_reason")]
+#endif
         public string IneligibleReason { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Disputes/Dispute.cs b/src/Stripe.net/Entities/Issuing/Disputes/Dispute.cs
index 8dd8bcf246..9fe9b2f131 100644
--- a/src/Stripe.net/Entities/Issuing/Disputes/Dispute.cs
+++ b/src/Stripe.net/Entities/Issuing/Disputes/Dispute.cs
@@ -5,6 +5,9 @@ namespace Stripe.Issuing
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// As a <a href="https://stripe.com/docs/issuing">card issuer</a>, you can dispute
@@ -14,18 +17,27 @@ namespace Stripe.Issuing
     /// Related guide: <a href="https://stripe.com/docs/issuing/purchases/disputes">Issuing
     /// disputes</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class Dispute : StripeEntity<Dispute>, IHasId, IHasMetadata, IHasObject, IBalanceTransactionSource
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -35,12 +47,18 @@ public class Dispute : StripeEntity<Dispute>, IHasId, IHasMetadata, IHasObject,
         /// currency fluctuation).
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
         /// List of balance transactions associated with the dispute.
         /// </summary>
         [JsonProperty("balance_transactions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("balance_transactions")]
+#endif
         public List<BalanceTransaction> BalanceTransactions { get; set; }
 
         /// <summary>
@@ -48,15 +66,25 @@ public class Dispute : StripeEntity<Dispute>, IHasId, IHasMetadata, IHasObject,
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// The currency the <c>transaction</c> was made in.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         [JsonProperty("evidence")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("evidence")]
+#endif
         public DisputeEvidence Evidence { get; set; }
 
         /// <summary>
@@ -64,6 +92,9 @@ public class Dispute : StripeEntity<Dispute>, IHasId, IHasMetadata, IHasObject,
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -84,6 +115,9 @@ public class Dispute : StripeEntity<Dispute>, IHasId, IHasMetadata, IHasObject,
         /// <c>transaction_unattended</c>.
         /// </summary>
         [JsonProperty("loss_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("loss_reason")]
+#endif
         public string LossReason { get; set; }
 
         /// <summary>
@@ -92,6 +126,9 @@ public class Dispute : StripeEntity<Dispute>, IHasId, IHasMetadata, IHasObject,
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -100,6 +137,9 @@ public class Dispute : StripeEntity<Dispute>, IHasId, IHasMetadata, IHasObject,
         /// <c>won</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         #region Expandable Transaction
@@ -109,6 +149,9 @@ public class Dispute : StripeEntity<Dispute>, IHasId, IHasMetadata, IHasObject,
         /// The transaction being disputed.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string TransactionId
         {
             get => this.InternalTransaction?.Id;
@@ -122,6 +165,9 @@ public string TransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Transaction Transaction
         {
             get => this.InternalTransaction?.ExpandedObject;
@@ -130,6 +176,10 @@ public Transaction Transaction
 
         [JsonProperty("transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<Transaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Transaction>))]
+#endif
         internal ExpandableField<Transaction> InternalTransaction { get; set; }
         #endregion
 
@@ -138,6 +188,9 @@ public Transaction Transaction
         /// dispute if it was created on a [FinancialAccount](/docs/api/treasury/financial_accounts.
         /// </summary>
         [JsonProperty("treasury")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("treasury")]
+#endif
         public DisputeTreasury Treasury { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidence.cs b/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidence.cs
index 42ef8cf231..2ac7d78fdb 100644
--- a/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidence.cs
+++ b/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidence.cs
@@ -2,28 +2,52 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeEvidence : StripeEntity<DisputeEvidence>
     {
         [JsonProperty("canceled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("canceled")]
+#endif
         public DisputeEvidenceCanceled Canceled { get; set; }
 
         [JsonProperty("duplicate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("duplicate")]
+#endif
         public DisputeEvidenceDuplicate Duplicate { get; set; }
 
         [JsonProperty("fraudulent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fraudulent")]
+#endif
         public DisputeEvidenceFraudulent Fraudulent { get; set; }
 
         [JsonProperty("merchandise_not_as_described")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("merchandise_not_as_described")]
+#endif
         public DisputeEvidenceMerchandiseNotAsDescribed MerchandiseNotAsDescribed { get; set; }
 
         [JsonProperty("no_valid_authorization")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("no_valid_authorization")]
+#endif
         public DisputeEvidenceNoValidAuthorization NoValidAuthorization { get; set; }
 
         [JsonProperty("not_received")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("not_received")]
+#endif
         public DisputeEvidenceNotReceived NotReceived { get; set; }
 
         [JsonProperty("other")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("other")]
+#endif
         public DisputeEvidenceOther Other { get; set; }
 
         /// <summary>
@@ -34,9 +58,15 @@ public class DisputeEvidence : StripeEntity<DisputeEvidence>
         /// <c>other</c>, or <c>service_not_as_described</c>.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
 
         [JsonProperty("service_not_as_described")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("service_not_as_described")]
+#endif
         public DisputeEvidenceServiceNotAsDescribed ServiceNotAsDescribed { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceCanceled.cs b/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceCanceled.cs
index 50de13fe3b..716dd2138f 100644
--- a/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceCanceled.cs
+++ b/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceCanceled.cs
@@ -4,7 +4,13 @@ namespace Stripe.Issuing
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class DisputeEvidenceCanceled : StripeEntity<DisputeEvidenceCanceled>
     {
         #region Expandable AdditionalDocumentation
@@ -15,6 +21,9 @@ public class DisputeEvidenceCanceled : StripeEntity<DisputeEvidenceCanceled>
         /// Additional documentation supporting the dispute.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AdditionalDocumentationId
         {
             get => this.InternalAdditionalDocumentation?.Id;
@@ -29,6 +38,9 @@ public string AdditionalDocumentationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File AdditionalDocumentation
         {
             get => this.InternalAdditionalDocumentation?.ExpandedObject;
@@ -37,6 +49,10 @@ public File AdditionalDocumentation
 
         [JsonProperty("additional_documentation")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("additional_documentation")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalAdditionalDocumentation { get; set; }
         #endregion
 
@@ -45,18 +61,28 @@ public File AdditionalDocumentation
         /// </summary>
         [JsonProperty("canceled_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("canceled_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? CanceledAt { get; set; }
 
         /// <summary>
         /// Whether the cardholder was provided with a cancellation policy.
         /// </summary>
         [JsonProperty("cancellation_policy_provided")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancellation_policy_provided")]
+#endif
         public bool? CancellationPolicyProvided { get; set; }
 
         /// <summary>
         /// Reason for canceling the order.
         /// </summary>
         [JsonProperty("cancellation_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancellation_reason")]
+#endif
         public string CancellationReason { get; set; }
 
         /// <summary>
@@ -64,18 +90,28 @@ public File AdditionalDocumentation
         /// </summary>
         [JsonProperty("expected_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expected_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpectedAt { get; set; }
 
         /// <summary>
         /// Explanation of why the cardholder is disputing this transaction.
         /// </summary>
         [JsonProperty("explanation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("explanation")]
+#endif
         public string Explanation { get; set; }
 
         /// <summary>
         /// Description of the merchandise or service that was purchased.
         /// </summary>
         [JsonProperty("product_description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_description")]
+#endif
         public string ProductDescription { get; set; }
 
         /// <summary>
@@ -83,6 +119,9 @@ public File AdditionalDocumentation
         /// One of: <c>merchandise</c>, or <c>service</c>.
         /// </summary>
         [JsonProperty("product_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_type")]
+#endif
         public string ProductType { get; set; }
 
         /// <summary>
@@ -90,6 +129,9 @@ public File AdditionalDocumentation
         /// One of: <c>merchant_rejected</c>, or <c>successful</c>.
         /// </summary>
         [JsonProperty("return_status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_status")]
+#endif
         public string ReturnStatus { get; set; }
 
         /// <summary>
@@ -97,6 +139,10 @@ public File AdditionalDocumentation
         /// </summary>
         [JsonProperty("returned_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("returned_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ReturnedAt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceDuplicate.cs b/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceDuplicate.cs
index 7c5df310a8..ea1fbd1389 100644
--- a/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceDuplicate.cs
+++ b/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceDuplicate.cs
@@ -3,7 +3,13 @@ namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class DisputeEvidenceDuplicate : StripeEntity<DisputeEvidenceDuplicate>
     {
         #region Expandable AdditionalDocumentation
@@ -14,6 +20,9 @@ public class DisputeEvidenceDuplicate : StripeEntity<DisputeEvidenceDuplicate>
         /// Additional documentation supporting the dispute.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AdditionalDocumentationId
         {
             get => this.InternalAdditionalDocumentation?.Id;
@@ -28,6 +37,9 @@ public string AdditionalDocumentationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File AdditionalDocumentation
         {
             get => this.InternalAdditionalDocumentation?.ExpandedObject;
@@ -36,6 +48,10 @@ public File AdditionalDocumentation
 
         [JsonProperty("additional_documentation")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("additional_documentation")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalAdditionalDocumentation { get; set; }
         #endregion
 
@@ -47,6 +63,9 @@ public File AdditionalDocumentation
         /// the card statement showing that the product had already been paid for.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CardStatementId
         {
             get => this.InternalCardStatement?.Id;
@@ -61,6 +80,9 @@ public string CardStatementId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File CardStatement
         {
             get => this.InternalCardStatement?.ExpandedObject;
@@ -69,6 +91,10 @@ public File CardStatement
 
         [JsonProperty("card_statement")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_statement")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalCardStatement { get; set; }
         #endregion
 
@@ -80,6 +106,9 @@ public File CardStatement
         /// the receipt showing that the product had been paid for in cash.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CashReceiptId
         {
             get => this.InternalCashReceipt?.Id;
@@ -94,6 +123,9 @@ public string CashReceiptId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File CashReceipt
         {
             get => this.InternalCashReceipt?.ExpandedObject;
@@ -102,6 +134,10 @@ public File CashReceipt
 
         [JsonProperty("cash_receipt")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cash_receipt")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalCashReceipt { get; set; }
         #endregion
 
@@ -113,6 +149,9 @@ public File CashReceipt
         /// the front and back of the check that was used to pay for the product.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CheckImageId
         {
             get => this.InternalCheckImage?.Id;
@@ -127,6 +166,9 @@ public string CheckImageId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File CheckImage
         {
             get => this.InternalCheckImage?.ExpandedObject;
@@ -135,6 +177,10 @@ public File CheckImage
 
         [JsonProperty("check_image")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("check_image")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalCheckImage { get; set; }
         #endregion
 
@@ -142,6 +188,9 @@ public File CheckImage
         /// Explanation of why the cardholder is disputing this transaction.
         /// </summary>
         [JsonProperty("explanation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("explanation")]
+#endif
         public string Explanation { get; set; }
 
         /// <summary>
@@ -149,6 +198,9 @@ public File CheckImage
         /// or more transactions that are copies of each other, this is original undisputed one.
         /// </summary>
         [JsonProperty("original_transaction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("original_transaction")]
+#endif
         public string OriginalTransaction { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceFraudulent.cs b/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceFraudulent.cs
index 2f8bfe74ba..7a06edf86a 100644
--- a/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceFraudulent.cs
+++ b/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceFraudulent.cs
@@ -3,7 +3,13 @@ namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class DisputeEvidenceFraudulent : StripeEntity<DisputeEvidenceFraudulent>
     {
         #region Expandable AdditionalDocumentation
@@ -14,6 +20,9 @@ public class DisputeEvidenceFraudulent : StripeEntity<DisputeEvidenceFraudulent>
         /// Additional documentation supporting the dispute.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AdditionalDocumentationId
         {
             get => this.InternalAdditionalDocumentation?.Id;
@@ -28,6 +37,9 @@ public string AdditionalDocumentationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File AdditionalDocumentation
         {
             get => this.InternalAdditionalDocumentation?.ExpandedObject;
@@ -36,6 +48,10 @@ public File AdditionalDocumentation
 
         [JsonProperty("additional_documentation")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("additional_documentation")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalAdditionalDocumentation { get; set; }
         #endregion
 
@@ -43,6 +59,9 @@ public File AdditionalDocumentation
         /// Explanation of why the cardholder is disputing this transaction.
         /// </summary>
         [JsonProperty("explanation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("explanation")]
+#endif
         public string Explanation { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceMerchandiseNotAsDescribed.cs b/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceMerchandiseNotAsDescribed.cs
index 83aee3738b..857b475234 100644
--- a/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceMerchandiseNotAsDescribed.cs
+++ b/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceMerchandiseNotAsDescribed.cs
@@ -4,7 +4,13 @@ namespace Stripe.Issuing
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class DisputeEvidenceMerchandiseNotAsDescribed : StripeEntity<DisputeEvidenceMerchandiseNotAsDescribed>
     {
         #region Expandable AdditionalDocumentation
@@ -15,6 +21,9 @@ public class DisputeEvidenceMerchandiseNotAsDescribed : StripeEntity<DisputeEvid
         /// Additional documentation supporting the dispute.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AdditionalDocumentationId
         {
             get => this.InternalAdditionalDocumentation?.Id;
@@ -29,6 +38,9 @@ public string AdditionalDocumentationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File AdditionalDocumentation
         {
             get => this.InternalAdditionalDocumentation?.ExpandedObject;
@@ -37,6 +49,10 @@ public File AdditionalDocumentation
 
         [JsonProperty("additional_documentation")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("additional_documentation")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalAdditionalDocumentation { get; set; }
         #endregion
 
@@ -44,6 +60,9 @@ public File AdditionalDocumentation
         /// Explanation of why the cardholder is disputing this transaction.
         /// </summary>
         [JsonProperty("explanation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("explanation")]
+#endif
         public string Explanation { get; set; }
 
         /// <summary>
@@ -51,12 +70,19 @@ public File AdditionalDocumentation
         /// </summary>
         [JsonProperty("received_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("received_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ReceivedAt { get; set; }
 
         /// <summary>
         /// Description of the cardholder's attempt to return the product.
         /// </summary>
         [JsonProperty("return_description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_description")]
+#endif
         public string ReturnDescription { get; set; }
 
         /// <summary>
@@ -64,6 +90,9 @@ public File AdditionalDocumentation
         /// One of: <c>merchant_rejected</c>, or <c>successful</c>.
         /// </summary>
         [JsonProperty("return_status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_status")]
+#endif
         public string ReturnStatus { get; set; }
 
         /// <summary>
@@ -71,6 +100,10 @@ public File AdditionalDocumentation
         /// </summary>
         [JsonProperty("returned_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("returned_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ReturnedAt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceNoValidAuthorization.cs b/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceNoValidAuthorization.cs
index dc57fb5390..5a31d3f442 100644
--- a/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceNoValidAuthorization.cs
+++ b/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceNoValidAuthorization.cs
@@ -3,7 +3,13 @@ namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class DisputeEvidenceNoValidAuthorization : StripeEntity<DisputeEvidenceNoValidAuthorization>
     {
         #region Expandable AdditionalDocumentation
@@ -14,6 +20,9 @@ public class DisputeEvidenceNoValidAuthorization : StripeEntity<DisputeEvidenceN
         /// Additional documentation supporting the dispute.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AdditionalDocumentationId
         {
             get => this.InternalAdditionalDocumentation?.Id;
@@ -28,6 +37,9 @@ public string AdditionalDocumentationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File AdditionalDocumentation
         {
             get => this.InternalAdditionalDocumentation?.ExpandedObject;
@@ -36,6 +48,10 @@ public File AdditionalDocumentation
 
         [JsonProperty("additional_documentation")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("additional_documentation")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalAdditionalDocumentation { get; set; }
         #endregion
 
@@ -43,6 +59,9 @@ public File AdditionalDocumentation
         /// Explanation of why the cardholder is disputing this transaction.
         /// </summary>
         [JsonProperty("explanation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("explanation")]
+#endif
         public string Explanation { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceNotReceived.cs b/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceNotReceived.cs
index 0e11a75826..4c90273c58 100644
--- a/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceNotReceived.cs
+++ b/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceNotReceived.cs
@@ -4,7 +4,13 @@ namespace Stripe.Issuing
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class DisputeEvidenceNotReceived : StripeEntity<DisputeEvidenceNotReceived>
     {
         #region Expandable AdditionalDocumentation
@@ -15,6 +21,9 @@ public class DisputeEvidenceNotReceived : StripeEntity<DisputeEvidenceNotReceive
         /// Additional documentation supporting the dispute.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AdditionalDocumentationId
         {
             get => this.InternalAdditionalDocumentation?.Id;
@@ -29,6 +38,9 @@ public string AdditionalDocumentationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File AdditionalDocumentation
         {
             get => this.InternalAdditionalDocumentation?.ExpandedObject;
@@ -37,6 +49,10 @@ public File AdditionalDocumentation
 
         [JsonProperty("additional_documentation")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("additional_documentation")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalAdditionalDocumentation { get; set; }
         #endregion
 
@@ -45,18 +61,28 @@ public File AdditionalDocumentation
         /// </summary>
         [JsonProperty("expected_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expected_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpectedAt { get; set; }
 
         /// <summary>
         /// Explanation of why the cardholder is disputing this transaction.
         /// </summary>
         [JsonProperty("explanation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("explanation")]
+#endif
         public string Explanation { get; set; }
 
         /// <summary>
         /// Description of the merchandise or service that was purchased.
         /// </summary>
         [JsonProperty("product_description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_description")]
+#endif
         public string ProductDescription { get; set; }
 
         /// <summary>
@@ -64,6 +90,9 @@ public File AdditionalDocumentation
         /// One of: <c>merchandise</c>, or <c>service</c>.
         /// </summary>
         [JsonProperty("product_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_type")]
+#endif
         public string ProductType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceOther.cs b/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceOther.cs
index 6c3f38df12..44ab5cf5ba 100644
--- a/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceOther.cs
+++ b/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceOther.cs
@@ -3,7 +3,13 @@ namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class DisputeEvidenceOther : StripeEntity<DisputeEvidenceOther>
     {
         #region Expandable AdditionalDocumentation
@@ -14,6 +20,9 @@ public class DisputeEvidenceOther : StripeEntity<DisputeEvidenceOther>
         /// Additional documentation supporting the dispute.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AdditionalDocumentationId
         {
             get => this.InternalAdditionalDocumentation?.Id;
@@ -28,6 +37,9 @@ public string AdditionalDocumentationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File AdditionalDocumentation
         {
             get => this.InternalAdditionalDocumentation?.ExpandedObject;
@@ -36,6 +48,10 @@ public File AdditionalDocumentation
 
         [JsonProperty("additional_documentation")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("additional_documentation")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalAdditionalDocumentation { get; set; }
         #endregion
 
@@ -43,12 +59,18 @@ public File AdditionalDocumentation
         /// Explanation of why the cardholder is disputing this transaction.
         /// </summary>
         [JsonProperty("explanation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("explanation")]
+#endif
         public string Explanation { get; set; }
 
         /// <summary>
         /// Description of the merchandise or service that was purchased.
         /// </summary>
         [JsonProperty("product_description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_description")]
+#endif
         public string ProductDescription { get; set; }
 
         /// <summary>
@@ -56,6 +78,9 @@ public File AdditionalDocumentation
         /// One of: <c>merchandise</c>, or <c>service</c>.
         /// </summary>
         [JsonProperty("product_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_type")]
+#endif
         public string ProductType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceServiceNotAsDescribed.cs b/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceServiceNotAsDescribed.cs
index 3802a41da0..469f2098da 100644
--- a/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceServiceNotAsDescribed.cs
+++ b/src/Stripe.net/Entities/Issuing/Disputes/DisputeEvidenceServiceNotAsDescribed.cs
@@ -4,7 +4,13 @@ namespace Stripe.Issuing
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class DisputeEvidenceServiceNotAsDescribed : StripeEntity<DisputeEvidenceServiceNotAsDescribed>
     {
         #region Expandable AdditionalDocumentation
@@ -15,6 +21,9 @@ public class DisputeEvidenceServiceNotAsDescribed : StripeEntity<DisputeEvidence
         /// Additional documentation supporting the dispute.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AdditionalDocumentationId
         {
             get => this.InternalAdditionalDocumentation?.Id;
@@ -29,6 +38,9 @@ public string AdditionalDocumentationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File AdditionalDocumentation
         {
             get => this.InternalAdditionalDocumentation?.ExpandedObject;
@@ -37,6 +49,10 @@ public File AdditionalDocumentation
 
         [JsonProperty("additional_documentation")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("additional_documentation")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalAdditionalDocumentation { get; set; }
         #endregion
 
@@ -45,18 +61,28 @@ public File AdditionalDocumentation
         /// </summary>
         [JsonProperty("canceled_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("canceled_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? CanceledAt { get; set; }
 
         /// <summary>
         /// Reason for canceling the order.
         /// </summary>
         [JsonProperty("cancellation_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancellation_reason")]
+#endif
         public string CancellationReason { get; set; }
 
         /// <summary>
         /// Explanation of why the cardholder is disputing this transaction.
         /// </summary>
         [JsonProperty("explanation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("explanation")]
+#endif
         public string Explanation { get; set; }
 
         /// <summary>
@@ -64,6 +90,10 @@ public File AdditionalDocumentation
         /// </summary>
         [JsonProperty("received_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("received_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ReceivedAt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Disputes/DisputeTreasury.cs b/src/Stripe.net/Entities/Issuing/Disputes/DisputeTreasury.cs
index 118a993c54..1697e6c0d9 100644
--- a/src/Stripe.net/Entities/Issuing/Disputes/DisputeTreasury.cs
+++ b/src/Stripe.net/Entities/Issuing/Disputes/DisputeTreasury.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeTreasury : StripeEntity<DisputeTreasury>
     {
@@ -11,6 +14,9 @@ public class DisputeTreasury : StripeEntity<DisputeTreasury>
         /// representing this Issuing dispute.
         /// </summary>
         [JsonProperty("debit_reversal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("debit_reversal")]
+#endif
         public string DebitReversal { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class DisputeTreasury : StripeEntity<DisputeTreasury>
         /// being disputed.
         /// </summary>
         [JsonProperty("received_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("received_debit")]
+#endif
         public string ReceivedDebit { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/PersonalizationDesigns/PersonalizationDesign.cs b/src/Stripe.net/Entities/Issuing/PersonalizationDesigns/PersonalizationDesign.cs
index 804f725ea8..beac2c3605 100644
--- a/src/Stripe.net/Entities/Issuing/PersonalizationDesigns/PersonalizationDesign.cs
+++ b/src/Stripe.net/Entities/Issuing/PersonalizationDesigns/PersonalizationDesign.cs
@@ -5,23 +5,35 @@ namespace Stripe.Issuing
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A Personalization Design is a logical grouping of a Physical Bundle, card logo, and
     /// carrier text that represents a product line.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class PersonalizationDesign : StripeEntity<PersonalizationDesign>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         #region Expandable CardLogo
@@ -32,6 +44,9 @@ public class PersonalizationDesign : StripeEntity<PersonalizationDesign>, IHasId
         /// have a <c>purpose</c> value of <c>issuing_logo</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CardLogoId
         {
             get => this.InternalCardLogo?.Id;
@@ -46,6 +61,9 @@ public string CardLogoId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File CardLogo
         {
             get => this.InternalCardLogo?.ExpandedObject;
@@ -54,6 +72,10 @@ public File CardLogo
 
         [JsonProperty("card_logo")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_logo")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalCardLogo { get; set; }
         #endregion
 
@@ -61,6 +83,9 @@ public File CardLogo
         /// Hash containing carrier text, for use with physical bundles that support carrier text.
         /// </summary>
         [JsonProperty("carrier_text")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("carrier_text")]
+#endif
         public PersonalizationDesignCarrierText CarrierText { get; set; }
 
         /// <summary>
@@ -68,6 +93,10 @@ public File CardLogo
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -75,6 +104,9 @@ public File CardLogo
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -82,6 +114,9 @@ public File CardLogo
         /// This may be up to 200 characters.
         /// </summary>
         [JsonProperty("lookup_key")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lookup_key")]
+#endif
         public string LookupKey { get; set; }
 
         /// <summary>
@@ -90,12 +125,18 @@ public File CardLogo
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Friendly display name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         #region Expandable PhysicalBundle
@@ -105,6 +146,9 @@ public File CardLogo
         /// The physical bundle object belonging to this personalization design.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string PhysicalBundleId
         {
             get => this.InternalPhysicalBundle?.Id;
@@ -118,6 +162,9 @@ public string PhysicalBundleId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PhysicalBundle PhysicalBundle
         {
             get => this.InternalPhysicalBundle?.ExpandedObject;
@@ -126,13 +173,23 @@ public PhysicalBundle PhysicalBundle
 
         [JsonProperty("physical_bundle")]
         [JsonConverter(typeof(ExpandableFieldConverter<PhysicalBundle>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("physical_bundle")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PhysicalBundle>))]
+#endif
         internal ExpandableField<PhysicalBundle> InternalPhysicalBundle { get; set; }
         #endregion
 
         [JsonProperty("preferences")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferences")]
+#endif
         public PersonalizationDesignPreferences Preferences { get; set; }
 
         [JsonProperty("rejection_reasons")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("rejection_reasons")]
+#endif
         public PersonalizationDesignRejectionReasons RejectionReasons { get; set; }
 
         /// <summary>
@@ -140,6 +197,9 @@ public PhysicalBundle PhysicalBundle
         /// One of: <c>active</c>, <c>inactive</c>, <c>rejected</c>, or <c>review</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/PersonalizationDesigns/PersonalizationDesignCarrierText.cs b/src/Stripe.net/Entities/Issuing/PersonalizationDesigns/PersonalizationDesignCarrierText.cs
index 1612c99193..dd52c11511 100644
--- a/src/Stripe.net/Entities/Issuing/PersonalizationDesigns/PersonalizationDesignCarrierText.cs
+++ b/src/Stripe.net/Entities/Issuing/PersonalizationDesigns/PersonalizationDesignCarrierText.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PersonalizationDesignCarrierText : StripeEntity<PersonalizationDesignCarrierText>
     {
@@ -9,24 +12,36 @@ public class PersonalizationDesignCarrierText : StripeEntity<PersonalizationDesi
         /// The footer body text of the carrier letter.
         /// </summary>
         [JsonProperty("footer_body")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("footer_body")]
+#endif
         public string FooterBody { get; set; }
 
         /// <summary>
         /// The footer title text of the carrier letter.
         /// </summary>
         [JsonProperty("footer_title")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("footer_title")]
+#endif
         public string FooterTitle { get; set; }
 
         /// <summary>
         /// The header body text of the carrier letter.
         /// </summary>
         [JsonProperty("header_body")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("header_body")]
+#endif
         public string HeaderBody { get; set; }
 
         /// <summary>
         /// The header title text of the carrier letter.
         /// </summary>
         [JsonProperty("header_title")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("header_title")]
+#endif
         public string HeaderTitle { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/PersonalizationDesigns/PersonalizationDesignPreferences.cs b/src/Stripe.net/Entities/Issuing/PersonalizationDesigns/PersonalizationDesignPreferences.cs
index 098f48aae9..c1256dc688 100644
--- a/src/Stripe.net/Entities/Issuing/PersonalizationDesigns/PersonalizationDesignPreferences.cs
+++ b/src/Stripe.net/Entities/Issuing/PersonalizationDesigns/PersonalizationDesignPreferences.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PersonalizationDesignPreferences : StripeEntity<PersonalizationDesignPreferences>
     {
@@ -11,6 +14,9 @@ public class PersonalizationDesignPreferences : StripeEntity<PersonalizationDesi
         /// design is set as the default design.
         /// </summary>
         [JsonProperty("is_default")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("is_default")]
+#endif
         public bool IsDefault { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class PersonalizationDesignPreferences : StripeEntity<PersonalizationDesi
         /// and a default for this connected account does not exist.
         /// </summary>
         [JsonProperty("is_platform_default")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("is_platform_default")]
+#endif
         public bool? IsPlatformDefault { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/PersonalizationDesigns/PersonalizationDesignRejectionReasons.cs b/src/Stripe.net/Entities/Issuing/PersonalizationDesigns/PersonalizationDesignRejectionReasons.cs
index ebbb289c80..e1a095766a 100644
--- a/src/Stripe.net/Entities/Issuing/PersonalizationDesigns/PersonalizationDesignRejectionReasons.cs
+++ b/src/Stripe.net/Entities/Issuing/PersonalizationDesigns/PersonalizationDesignRejectionReasons.cs
@@ -3,6 +3,9 @@ namespace Stripe.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PersonalizationDesignRejectionReasons : StripeEntity<PersonalizationDesignRejectionReasons>
     {
@@ -13,6 +16,9 @@ public class PersonalizationDesignRejectionReasons : StripeEntity<Personalizatio
         /// <c>promotional_material</c>.
         /// </summary>
         [JsonProperty("card_logo")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_logo")]
+#endif
         public List<string> CardLogo { get; set; }
 
         /// <summary>
@@ -22,6 +28,9 @@ public class PersonalizationDesignRejectionReasons : StripeEntity<Personalizatio
         /// <c>promotional_material</c>.
         /// </summary>
         [JsonProperty("carrier_text")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("carrier_text")]
+#endif
         public List<string> CarrierText { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/PhysicalBundles/PhysicalBundle.cs b/src/Stripe.net/Entities/Issuing/PhysicalBundles/PhysicalBundle.cs
index ff94d0ea54..4b1d5c1c1a 100644
--- a/src/Stripe.net/Entities/Issuing/PhysicalBundles/PhysicalBundle.cs
+++ b/src/Stripe.net/Entities/Issuing/PhysicalBundles/PhysicalBundle.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A Physical Bundle represents the bundle of physical items - card stock, carrier letter,
@@ -13,15 +16,24 @@ public class PhysicalBundle : StripeEntity<PhysicalBundle>, IHasId, IHasObject
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public PhysicalBundleFeatures Features { get; set; }
 
         /// <summary>
@@ -29,12 +41,18 @@ public class PhysicalBundle : StripeEntity<PhysicalBundle>, IHasId, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
         /// Friendly display name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -42,6 +60,9 @@ public class PhysicalBundle : StripeEntity<PhysicalBundle>, IHasId, IHasObject
         /// One of: <c>active</c>, <c>inactive</c>, or <c>review</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -49,6 +70,9 @@ public class PhysicalBundle : StripeEntity<PhysicalBundle>, IHasId, IHasObject
         /// One of: <c>custom</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/PhysicalBundles/PhysicalBundleFeatures.cs b/src/Stripe.net/Entities/Issuing/PhysicalBundles/PhysicalBundleFeatures.cs
index 66cc304e07..a3b1c7f3f9 100644
--- a/src/Stripe.net/Entities/Issuing/PhysicalBundles/PhysicalBundleFeatures.cs
+++ b/src/Stripe.net/Entities/Issuing/PhysicalBundles/PhysicalBundleFeatures.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PhysicalBundleFeatures : StripeEntity<PhysicalBundleFeatures>
     {
@@ -10,6 +13,9 @@ public class PhysicalBundleFeatures : StripeEntity<PhysicalBundleFeatures>
         /// One of: <c>optional</c>, <c>required</c>, or <c>unsupported</c>.
         /// </summary>
         [JsonProperty("card_logo")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_logo")]
+#endif
         public string CardLogo { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class PhysicalBundleFeatures : StripeEntity<PhysicalBundleFeatures>
         /// One of: <c>optional</c>, <c>required</c>, or <c>unsupported</c>.
         /// </summary>
         [JsonProperty("carrier_text")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("carrier_text")]
+#endif
         public string CarrierText { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class PhysicalBundleFeatures : StripeEntity<PhysicalBundleFeatures>
         /// One of: <c>optional</c>, <c>required</c>, or <c>unsupported</c>.
         /// </summary>
         [JsonProperty("second_line")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("second_line")]
+#endif
         public string SecondLine { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Tokens/Token.cs b/src/Stripe.net/Entities/Issuing/Tokens/Token.cs
index c125e60934..c923a54f93 100644
--- a/src/Stripe.net/Entities/Issuing/Tokens/Token.cs
+++ b/src/Stripe.net/Entities/Issuing/Tokens/Token.cs
@@ -4,6 +4,9 @@ namespace Stripe.Issuing
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// An issuing token object is created when an issued card is added to a digital wallet. As
@@ -11,18 +14,27 @@ namespace Stripe.Issuing
     /// href="https://stripe.com/docs/issuing/controls/token-management">view and manage these
     /// tokens</a> through Stripe.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class Token : StripeEntity<Token>, IHasId, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         #region Expandable Card
@@ -32,6 +44,9 @@ public class Token : StripeEntity<Token>, IHasId, IHasObject
         /// Card associated with this token.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CardId
         {
             get => this.InternalCard?.Id;
@@ -45,6 +60,9 @@ public string CardId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Card Card
         {
             get => this.InternalCard?.ExpandedObject;
@@ -53,6 +71,10 @@ public Card Card
 
         [JsonProperty("card")]
         [JsonConverter(typeof(ExpandableFieldConverter<Card>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Card>))]
+#endif
         internal ExpandableField<Card> InternalCard { get; set; }
         #endregion
 
@@ -61,6 +83,10 @@ public Card Card
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -68,12 +94,18 @@ public Card Card
         /// token.
         /// </summary>
         [JsonProperty("device_fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("device_fingerprint")]
+#endif
         public string DeviceFingerprint { get; set; }
 
         /// <summary>
         /// The last four digits of the token.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
@@ -81,6 +113,9 @@ public Card Card
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -88,9 +123,15 @@ public Card Card
         /// One of: <c>mastercard</c>, or <c>visa</c>.
         /// </summary>
         [JsonProperty("network")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network")]
+#endif
         public string Network { get; set; }
 
         [JsonProperty("network_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network_data")]
+#endif
         public TokenNetworkData NetworkData { get; set; }
 
         /// <summary>
@@ -99,6 +140,10 @@ public Card Card
         /// </summary>
         [JsonProperty("network_updated_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network_updated_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime NetworkUpdatedAt { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -106,6 +151,9 @@ public Card Card
         /// One of: <c>active</c>, <c>deleted</c>, <c>requested</c>, or <c>suspended</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -113,6 +161,9 @@ public Card Card
         /// One of: <c>apple_pay</c>, <c>google_pay</c>, or <c>samsung_pay</c>.
         /// </summary>
         [JsonProperty("wallet_provider")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wallet_provider")]
+#endif
         public string WalletProvider { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Tokens/TokenNetworkData.cs b/src/Stripe.net/Entities/Issuing/Tokens/TokenNetworkData.cs
index 20f7f55817..83a29127bb 100644
--- a/src/Stripe.net/Entities/Issuing/Tokens/TokenNetworkData.cs
+++ b/src/Stripe.net/Entities/Issuing/Tokens/TokenNetworkData.cs
@@ -2,13 +2,22 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenNetworkData : StripeEntity<TokenNetworkData>
     {
         [JsonProperty("device")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("device")]
+#endif
         public TokenNetworkDataDevice Device { get; set; }
 
         [JsonProperty("mastercard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mastercard")]
+#endif
         public TokenNetworkDataMastercard Mastercard { get; set; }
 
         /// <summary>
@@ -17,12 +26,21 @@ public class TokenNetworkData : StripeEntity<TokenNetworkData>
         /// One of: <c>mastercard</c>, or <c>visa</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         [JsonProperty("visa")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("visa")]
+#endif
         public TokenNetworkDataVisa Visa { get; set; }
 
         [JsonProperty("wallet_provider")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wallet_provider")]
+#endif
         public TokenNetworkDataWalletProvider WalletProvider { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Tokens/TokenNetworkDataDevice.cs b/src/Stripe.net/Entities/Issuing/Tokens/TokenNetworkDataDevice.cs
index 2c8302961f..1b57dc2b0e 100644
--- a/src/Stripe.net/Entities/Issuing/Tokens/TokenNetworkDataDevice.cs
+++ b/src/Stripe.net/Entities/Issuing/Tokens/TokenNetworkDataDevice.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenNetworkDataDevice : StripeEntity<TokenNetworkDataDevice>
     {
@@ -9,12 +12,18 @@ public class TokenNetworkDataDevice : StripeEntity<TokenNetworkDataDevice>
         /// An obfuscated ID derived from the device ID.
         /// </summary>
         [JsonProperty("device_fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("device_fingerprint")]
+#endif
         public string DeviceFingerprint { get; set; }
 
         /// <summary>
         /// The IP address of the device at provisioning time.
         /// </summary>
         [JsonProperty("ip_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip_address")]
+#endif
         public string IpAddress { get; set; }
 
         /// <summary>
@@ -22,18 +31,27 @@ public class TokenNetworkDataDevice : StripeEntity<TokenNetworkDataDevice>
         /// format is [+-]decimal/[+-]decimal.
         /// </summary>
         [JsonProperty("location")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("location")]
+#endif
         public string Location { get; set; }
 
         /// <summary>
         /// The name of the device used for tokenization.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// The phone number of the device used for tokenization.
         /// </summary>
         [JsonProperty("phone_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone_number")]
+#endif
         public string PhoneNumber { get; set; }
 
         /// <summary>
@@ -41,6 +59,9 @@ public class TokenNetworkDataDevice : StripeEntity<TokenNetworkDataDevice>
         /// One of: <c>other</c>, <c>phone</c>, or <c>watch</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Tokens/TokenNetworkDataMastercard.cs b/src/Stripe.net/Entities/Issuing/Tokens/TokenNetworkDataMastercard.cs
index 12a176780e..a11532b68e 100644
--- a/src/Stripe.net/Entities/Issuing/Tokens/TokenNetworkDataMastercard.cs
+++ b/src/Stripe.net/Entities/Issuing/Tokens/TokenNetworkDataMastercard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenNetworkDataMastercard : StripeEntity<TokenNetworkDataMastercard>
     {
@@ -9,18 +12,27 @@ public class TokenNetworkDataMastercard : StripeEntity<TokenNetworkDataMastercar
         /// A unique reference ID from MasterCard to represent the card account number.
         /// </summary>
         [JsonProperty("card_reference_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_reference_id")]
+#endif
         public string CardReferenceId { get; set; }
 
         /// <summary>
         /// The network-unique identifier for the token.
         /// </summary>
         [JsonProperty("token_reference_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("token_reference_id")]
+#endif
         public string TokenReferenceId { get; set; }
 
         /// <summary>
         /// The ID of the entity requesting tokenization, specific to MasterCard.
         /// </summary>
         [JsonProperty("token_requestor_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("token_requestor_id")]
+#endif
         public string TokenRequestorId { get; set; }
 
         /// <summary>
@@ -28,6 +40,9 @@ public class TokenNetworkDataMastercard : StripeEntity<TokenNetworkDataMastercar
         /// MasterCard.
         /// </summary>
         [JsonProperty("token_requestor_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("token_requestor_name")]
+#endif
         public string TokenRequestorName { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Tokens/TokenNetworkDataVisa.cs b/src/Stripe.net/Entities/Issuing/Tokens/TokenNetworkDataVisa.cs
index b2fb9b3e66..e833cc16ba 100644
--- a/src/Stripe.net/Entities/Issuing/Tokens/TokenNetworkDataVisa.cs
+++ b/src/Stripe.net/Entities/Issuing/Tokens/TokenNetworkDataVisa.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenNetworkDataVisa : StripeEntity<TokenNetworkDataVisa>
     {
@@ -9,18 +12,27 @@ public class TokenNetworkDataVisa : StripeEntity<TokenNetworkDataVisa>
         /// A unique reference ID from Visa to represent the card account number.
         /// </summary>
         [JsonProperty("card_reference_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_reference_id")]
+#endif
         public string CardReferenceId { get; set; }
 
         /// <summary>
         /// The network-unique identifier for the token.
         /// </summary>
         [JsonProperty("token_reference_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("token_reference_id")]
+#endif
         public string TokenReferenceId { get; set; }
 
         /// <summary>
         /// The ID of the entity requesting tokenization, specific to Visa.
         /// </summary>
         [JsonProperty("token_requestor_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("token_requestor_id")]
+#endif
         public string TokenRequestorId { get; set; }
 
         /// <summary>
@@ -29,6 +41,9 @@ public class TokenNetworkDataVisa : StripeEntity<TokenNetworkDataVisa>
         /// Visa.
         /// </summary>
         [JsonProperty("token_risk_score")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("token_risk_score")]
+#endif
         public string TokenRiskScore { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Tokens/TokenNetworkDataWalletProvider.cs b/src/Stripe.net/Entities/Issuing/Tokens/TokenNetworkDataWalletProvider.cs
index 19dbcfd168..c7c7c05788 100644
--- a/src/Stripe.net/Entities/Issuing/Tokens/TokenNetworkDataWalletProvider.cs
+++ b/src/Stripe.net/Entities/Issuing/Tokens/TokenNetworkDataWalletProvider.cs
@@ -3,6 +3,9 @@ namespace Stripe.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenNetworkDataWalletProvider : StripeEntity<TokenNetworkDataWalletProvider>
     {
@@ -10,6 +13,9 @@ public class TokenNetworkDataWalletProvider : StripeEntity<TokenNetworkDataWalle
         /// The wallet provider-given account ID of the digital wallet the token belongs to.
         /// </summary>
         [JsonProperty("account_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_id")]
+#endif
         public string AccountId { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class TokenNetworkDataWalletProvider : StripeEntity<TokenNetworkDataWalle
         /// score indicates more trustworthy.
         /// </summary>
         [JsonProperty("account_trust_score")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_trust_score")]
+#endif
         public long AccountTrustScore { get; set; }
 
         /// <summary>
@@ -24,15 +33,24 @@ public class TokenNetworkDataWalletProvider : StripeEntity<TokenNetworkDataWalle
         /// One of: <c>app</c>, <c>manual</c>, <c>on_file</c>, or <c>other</c>.
         /// </summary>
         [JsonProperty("card_number_source")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_number_source")]
+#endif
         public string CardNumberSource { get; set; }
 
         [JsonProperty("cardholder_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder_address")]
+#endif
         public TokenNetworkDataWalletProviderCardholderAddress CardholderAddress { get; set; }
 
         /// <summary>
         /// The name of the cardholder tokenizing the card.
         /// </summary>
         [JsonProperty("cardholder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder_name")]
+#endif
         public string CardholderName { get; set; }
 
         /// <summary>
@@ -40,12 +58,18 @@ public class TokenNetworkDataWalletProvider : StripeEntity<TokenNetworkDataWalle
         /// trustworthy.
         /// </summary>
         [JsonProperty("device_trust_score")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("device_trust_score")]
+#endif
         public long DeviceTrustScore { get; set; }
 
         /// <summary>
         /// The hashed email address of the cardholder's account with the wallet provider.
         /// </summary>
         [JsonProperty("hashed_account_email_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hashed_account_email_address")]
+#endif
         public string HashedAccountEmailAddress { get; set; }
 
         /// <summary>
@@ -64,6 +88,9 @@ public class TokenNetworkDataWalletProvider : StripeEntity<TokenNetworkDataWalle
         /// <c>too_many_recent_attempts</c>, or <c>too_many_recent_tokens</c>.
         /// </summary>
         [JsonProperty("reason_codes")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason_codes")]
+#endif
         public List<string> ReasonCodes { get; set; }
 
         /// <summary>
@@ -71,12 +98,18 @@ public class TokenNetworkDataWalletProvider : StripeEntity<TokenNetworkDataWalle
         /// One of: <c>approve</c>, <c>decline</c>, or <c>require_auth</c>.
         /// </summary>
         [JsonProperty("suggested_decision")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("suggested_decision")]
+#endif
         public string SuggestedDecision { get; set; }
 
         /// <summary>
         /// The version of the standard for mapping reason codes followed by the wallet provider.
         /// </summary>
         [JsonProperty("suggested_decision_version")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("suggested_decision_version")]
+#endif
         public string SuggestedDecisionVersion { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Tokens/TokenNetworkDataWalletProviderCardholderAddress.cs b/src/Stripe.net/Entities/Issuing/Tokens/TokenNetworkDataWalletProviderCardholderAddress.cs
index 6a42585def..166d205f17 100644
--- a/src/Stripe.net/Entities/Issuing/Tokens/TokenNetworkDataWalletProviderCardholderAddress.cs
+++ b/src/Stripe.net/Entities/Issuing/Tokens/TokenNetworkDataWalletProviderCardholderAddress.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenNetworkDataWalletProviderCardholderAddress : StripeEntity<TokenNetworkDataWalletProviderCardholderAddress>
     {
@@ -9,12 +12,18 @@ public class TokenNetworkDataWalletProviderCardholderAddress : StripeEntity<Toke
         /// The street address of the cardholder tokenizing the card.
         /// </summary>
         [JsonProperty("line1")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line1")]
+#endif
         public string Line1 { get; set; }
 
         /// <summary>
         /// The postal code of the cardholder tokenizing the card.
         /// </summary>
         [JsonProperty("postal_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("postal_code")]
+#endif
         public string PostalCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Transactions/Transaction.cs b/src/Stripe.net/Entities/Issuing/Transactions/Transaction.cs
index 13d429df4c..0c98afe716 100644
--- a/src/Stripe.net/Entities/Issuing/Transactions/Transaction.cs
+++ b/src/Stripe.net/Entities/Issuing/Transactions/Transaction.cs
@@ -5,6 +5,9 @@ namespace Stripe.Issuing
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Any use of an <a href="https://stripe.com/docs/issuing">issued card</a> that results in
@@ -14,18 +17,27 @@ namespace Stripe.Issuing
     /// Related guide: <a href="https://stripe.com/docs/issuing/purchases/transactions">Issued
     /// card transactions</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class Transaction : StripeEntity<Transaction>, IHasId, IHasMetadata, IHasObject, IBalanceTransactionSource
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -34,6 +46,9 @@ public class Transaction : StripeEntity<Transaction>, IHasId, IHasMetadata, IHas
         /// currency unit</a>.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -42,6 +57,9 @@ public class Transaction : StripeEntity<Transaction>, IHasId, IHasMetadata, IHas
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("amount_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_details")]
+#endif
         public TransactionAmountDetails AmountDetails { get; set; }
 
         #region Expandable Authorization
@@ -51,6 +69,9 @@ public class Transaction : StripeEntity<Transaction>, IHasId, IHasMetadata, IHas
         /// The <c>Authorization</c> object that led to this transaction.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AuthorizationId
         {
             get => this.InternalAuthorization?.Id;
@@ -64,6 +85,9 @@ public string AuthorizationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Authorization Authorization
         {
             get => this.InternalAuthorization?.ExpandedObject;
@@ -72,6 +96,10 @@ public Authorization Authorization
 
         [JsonProperty("authorization")]
         [JsonConverter(typeof(ExpandableFieldConverter<Authorization>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("authorization")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Authorization>))]
+#endif
         internal ExpandableField<Authorization> InternalAuthorization { get; set; }
         #endregion
 
@@ -83,6 +111,9 @@ public Authorization Authorization
         /// transaction</a> associated with this transaction.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string BalanceTransactionId
         {
             get => this.InternalBalanceTransaction?.Id;
@@ -97,6 +128,9 @@ public string BalanceTransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public BalanceTransaction BalanceTransaction
         {
             get => this.InternalBalanceTransaction?.ExpandedObject;
@@ -105,6 +139,10 @@ public BalanceTransaction BalanceTransaction
 
         [JsonProperty("balance_transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<BalanceTransaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("balance_transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<BalanceTransaction>))]
+#endif
         internal ExpandableField<BalanceTransaction> InternalBalanceTransaction { get; set; }
         #endregion
 
@@ -115,6 +153,9 @@ public BalanceTransaction BalanceTransaction
         /// The card used to make this transaction.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CardId
         {
             get => this.InternalCard?.Id;
@@ -128,6 +169,9 @@ public string CardId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Card Card
         {
             get => this.InternalCard?.ExpandedObject;
@@ -136,6 +180,10 @@ public Card Card
 
         [JsonProperty("card")]
         [JsonConverter(typeof(ExpandableFieldConverter<Card>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Card>))]
+#endif
         internal ExpandableField<Card> InternalCard { get; set; }
         #endregion
 
@@ -146,6 +194,9 @@ public Card Card
         /// The cardholder to whom this transaction belongs.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CardholderId
         {
             get => this.InternalCardholder?.Id;
@@ -159,6 +210,9 @@ public string CardholderId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Cardholder Cardholder
         {
             get => this.InternalCardholder?.ExpandedObject;
@@ -167,6 +221,10 @@ public Cardholder Cardholder
 
         [JsonProperty("cardholder")]
         [JsonConverter(typeof(ExpandableFieldConverter<Cardholder>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Cardholder>))]
+#endif
         internal ExpandableField<Cardholder> InternalCardholder { get; set; }
         #endregion
 
@@ -175,6 +233,10 @@ public Cardholder Cardholder
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -183,6 +245,9 @@ public Cardholder Cardholder
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         #region Expandable Dispute
@@ -192,6 +257,9 @@ public Cardholder Cardholder
         /// If you've disputed the transaction, the ID of the dispute.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DisputeId
         {
             get => this.InternalDispute?.Id;
@@ -205,6 +273,9 @@ public string DisputeId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Dispute Dispute
         {
             get => this.InternalDispute?.ExpandedObject;
@@ -213,6 +284,10 @@ public Dispute Dispute
 
         [JsonProperty("dispute")]
         [JsonConverter(typeof(ExpandableFieldConverter<Dispute>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dispute")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Dispute>))]
+#endif
         internal ExpandableField<Dispute> InternalDispute { get; set; }
         #endregion
 
@@ -221,6 +296,9 @@ public Dispute Dispute
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -230,15 +308,24 @@ public Dispute Dispute
         /// different currency.
         /// </summary>
         [JsonProperty("merchant_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("merchant_amount")]
+#endif
         public long MerchantAmount { get; set; }
 
         /// <summary>
         /// The currency with which the merchant is taking payment.
         /// </summary>
         [JsonProperty("merchant_currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("merchant_currency")]
+#endif
         public string MerchantCurrency { get; set; }
 
         [JsonProperty("merchant_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("merchant_data")]
+#endif
         public AuthorizationMerchantData MerchantData { get; set; }
 
         /// <summary>
@@ -247,18 +334,27 @@ public Dispute Dispute
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Details about the transaction, such as processing dates, set by the card network.
         /// </summary>
         [JsonProperty("network_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network_data")]
+#endif
         public TransactionNetworkData NetworkData { get; set; }
 
         /// <summary>
         /// Additional purchase information that is optionally provided by the merchant.
         /// </summary>
         [JsonProperty("purchase_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("purchase_details")]
+#endif
         public TransactionPurchaseDetails PurchaseDetails { get; set; }
 
         #region Expandable Token
@@ -270,6 +366,9 @@ public Dispute Dispute
         /// be null.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string TokenId
         {
             get => this.InternalToken?.Id;
@@ -285,6 +384,9 @@ public string TokenId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Token Token
         {
             get => this.InternalToken?.ExpandedObject;
@@ -293,6 +395,10 @@ public Token Token
 
         [JsonProperty("token")]
         [JsonConverter(typeof(ExpandableFieldConverter<Token>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("token")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Token>))]
+#endif
         internal ExpandableField<Token> InternalToken { get; set; }
         #endregion
 
@@ -302,6 +408,9 @@ public Token Token
         /// [FinancialAccount](/docs/api/treasury/financial_accounts.
         /// </summary>
         [JsonProperty("treasury")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("treasury")]
+#endif
         public TransactionTreasury Treasury { get; set; }
 
         /// <summary>
@@ -309,6 +418,9 @@ public Token Token
         /// One of: <c>capture</c>, or <c>refund</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
@@ -317,6 +429,9 @@ public Token Token
         /// One of: <c>apple_pay</c>, <c>google_pay</c>, or <c>samsung_pay</c>.
         /// </summary>
         [JsonProperty("wallet")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wallet")]
+#endif
         public string Wallet { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Transactions/TransactionAmountDetails.cs b/src/Stripe.net/Entities/Issuing/Transactions/TransactionAmountDetails.cs
index 3b45ab2981..219ecb5af8 100644
--- a/src/Stripe.net/Entities/Issuing/Transactions/TransactionAmountDetails.cs
+++ b/src/Stripe.net/Entities/Issuing/Transactions/TransactionAmountDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionAmountDetails : StripeEntity<TransactionAmountDetails>
     {
@@ -9,12 +12,18 @@ public class TransactionAmountDetails : StripeEntity<TransactionAmountDetails>
         /// The fee charged by the ATM for the cash withdrawal.
         /// </summary>
         [JsonProperty("atm_fee")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("atm_fee")]
+#endif
         public long? AtmFee { get; set; }
 
         /// <summary>
         /// The amount of cash requested by the cardholder.
         /// </summary>
         [JsonProperty("cashback_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cashback_amount")]
+#endif
         public long? CashbackAmount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Transactions/TransactionNetworkData.cs b/src/Stripe.net/Entities/Issuing/Transactions/TransactionNetworkData.cs
index 51e5f68cc4..29e1fbe348 100644
--- a/src/Stripe.net/Entities/Issuing/Transactions/TransactionNetworkData.cs
+++ b/src/Stripe.net/Entities/Issuing/Transactions/TransactionNetworkData.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionNetworkData : StripeEntity<TransactionNetworkData>
     {
@@ -13,6 +16,9 @@ public class TransactionNetworkData : StripeEntity<TransactionNetworkData>
         /// authorizations.
         /// </summary>
         [JsonProperty("authorization_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("authorization_code")]
+#endif
         public string AuthorizationCode { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class TransactionNetworkData : StripeEntity<TransactionNetworkData>
         /// transaction to the network.
         /// </summary>
         [JsonProperty("processing_date")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("processing_date")]
+#endif
         public string ProcessingDate { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class TransactionNetworkData : StripeEntity<TransactionNetworkData>
         /// subsequent messages, disputes, and transactions.
         /// </summary>
         [JsonProperty("transaction_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_id")]
+#endif
         public string TransactionId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetails.cs b/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetails.cs
index d175605aeb..0238ad091d 100644
--- a/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetails.cs
+++ b/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetails.cs
@@ -3,6 +3,9 @@ namespace Stripe.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionPurchaseDetails : StripeEntity<TransactionPurchaseDetails>
     {
@@ -10,36 +13,54 @@ public class TransactionPurchaseDetails : StripeEntity<TransactionPurchaseDetail
         /// Fleet-specific information for transactions using Fleet cards.
         /// </summary>
         [JsonProperty("fleet")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fleet")]
+#endif
         public TransactionPurchaseDetailsFleet Fleet { get; set; }
 
         /// <summary>
         /// Information about the flight that was purchased with this transaction.
         /// </summary>
         [JsonProperty("flight")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flight")]
+#endif
         public TransactionPurchaseDetailsFlight Flight { get; set; }
 
         /// <summary>
         /// Information about fuel that was purchased with this transaction.
         /// </summary>
         [JsonProperty("fuel")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fuel")]
+#endif
         public TransactionPurchaseDetailsFuel Fuel { get; set; }
 
         /// <summary>
         /// Information about lodging that was purchased with this transaction.
         /// </summary>
         [JsonProperty("lodging")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lodging")]
+#endif
         public TransactionPurchaseDetailsLodging Lodging { get; set; }
 
         /// <summary>
         /// The line items in the purchase.
         /// </summary>
         [JsonProperty("receipt")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("receipt")]
+#endif
         public List<TransactionPurchaseDetailsReceipt> Receipt { get; set; }
 
         /// <summary>
         /// A merchant-specific order number.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFleet.cs b/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFleet.cs
index 001e10ff5c..02dbe49e3b 100644
--- a/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFleet.cs
+++ b/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFleet.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionPurchaseDetailsFleet : StripeEntity<TransactionPurchaseDetailsFleet>
     {
@@ -9,6 +12,9 @@ public class TransactionPurchaseDetailsFleet : StripeEntity<TransactionPurchaseD
         /// Answers to prompts presented to cardholder at point of sale.
         /// </summary>
         [JsonProperty("cardholder_prompt_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder_prompt_data")]
+#endif
         public TransactionPurchaseDetailsFleetCardholderPromptData CardholderPromptData { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class TransactionPurchaseDetailsFleet : StripeEntity<TransactionPurchaseD
         /// <c>fuel_and_non_fuel_purchase</c>.
         /// </summary>
         [JsonProperty("purchase_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("purchase_type")]
+#endif
         public string PurchaseType { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class TransactionPurchaseDetailsFleet : StripeEntity<TransactionPurchaseD
         /// accurate as some merchants may provide unreliable data.
         /// </summary>
         [JsonProperty("reported_breakdown")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reported_breakdown")]
+#endif
         public TransactionPurchaseDetailsFleetReportedBreakdown ReportedBreakdown { get; set; }
 
         /// <summary>
@@ -30,6 +42,9 @@ public class TransactionPurchaseDetailsFleet : StripeEntity<TransactionPurchaseD
         /// <c>self_service</c>.
         /// </summary>
         [JsonProperty("service_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("service_type")]
+#endif
         public string ServiceType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFleetCardholderPromptData.cs b/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFleetCardholderPromptData.cs
index 16281dbf05..e85f149091 100644
--- a/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFleetCardholderPromptData.cs
+++ b/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFleetCardholderPromptData.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionPurchaseDetailsFleetCardholderPromptData : StripeEntity<TransactionPurchaseDetailsFleetCardholderPromptData>
     {
@@ -9,12 +12,18 @@ public class TransactionPurchaseDetailsFleetCardholderPromptData : StripeEntity<
         /// Driver ID.
         /// </summary>
         [JsonProperty("driver_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("driver_id")]
+#endif
         public string DriverId { get; set; }
 
         /// <summary>
         /// Odometer reading.
         /// </summary>
         [JsonProperty("odometer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("odometer")]
+#endif
         public long? Odometer { get; set; }
 
         /// <summary>
@@ -23,18 +32,27 @@ public class TransactionPurchaseDetailsFleetCardholderPromptData : StripeEntity<
         /// type.
         /// </summary>
         [JsonProperty("unspecified_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unspecified_id")]
+#endif
         public string UnspecifiedId { get; set; }
 
         /// <summary>
         /// User ID.
         /// </summary>
         [JsonProperty("user_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_id")]
+#endif
         public string UserId { get; set; }
 
         /// <summary>
         /// Vehicle number.
         /// </summary>
         [JsonProperty("vehicle_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("vehicle_number")]
+#endif
         public string VehicleNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdown.cs b/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdown.cs
index 6d27218d5b..cf80f4a71c 100644
--- a/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdown.cs
+++ b/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdown.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionPurchaseDetailsFleetReportedBreakdown : StripeEntity<TransactionPurchaseDetailsFleetReportedBreakdown>
     {
@@ -9,18 +12,27 @@ public class TransactionPurchaseDetailsFleetReportedBreakdown : StripeEntity<Tra
         /// Breakdown of fuel portion of the purchase.
         /// </summary>
         [JsonProperty("fuel")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fuel")]
+#endif
         public TransactionPurchaseDetailsFleetReportedBreakdownFuel Fuel { get; set; }
 
         /// <summary>
         /// Breakdown of non-fuel portion of the purchase.
         /// </summary>
         [JsonProperty("non_fuel")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("non_fuel")]
+#endif
         public TransactionPurchaseDetailsFleetReportedBreakdownNonFuel NonFuel { get; set; }
 
         /// <summary>
         /// Information about tax included in this transaction.
         /// </summary>
         [JsonProperty("tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax")]
+#endif
         public TransactionPurchaseDetailsFleetReportedBreakdownTax Tax { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdownFuel.cs b/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdownFuel.cs
index a233f23024..51c62016b2 100644
--- a/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdownFuel.cs
+++ b/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdownFuel.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionPurchaseDetailsFleetReportedBreakdownFuel : StripeEntity<TransactionPurchaseDetailsFleetReportedBreakdownFuel>
     {
@@ -10,6 +13,9 @@ public class TransactionPurchaseDetailsFleetReportedBreakdownFuel : StripeEntity
         /// of taxes.
         /// </summary>
         [JsonProperty("gross_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gross_amount_decimal")]
+#endif
         public decimal? GrossAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdownNonFuel.cs b/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdownNonFuel.cs
index fbbd7da648..da9706e65f 100644
--- a/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdownNonFuel.cs
+++ b/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdownNonFuel.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionPurchaseDetailsFleetReportedBreakdownNonFuel : StripeEntity<TransactionPurchaseDetailsFleetReportedBreakdownNonFuel>
     {
@@ -9,6 +12,9 @@ public class TransactionPurchaseDetailsFleetReportedBreakdownNonFuel : StripeEnt
         /// Gross non-fuel amount that should equal the sum of the line items, inclusive of taxes.
         /// </summary>
         [JsonProperty("gross_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gross_amount_decimal")]
+#endif
         public decimal? GrossAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdownTax.cs b/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdownTax.cs
index 7b18f03335..83335394f0 100644
--- a/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdownTax.cs
+++ b/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdownTax.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionPurchaseDetailsFleetReportedBreakdownTax : StripeEntity<TransactionPurchaseDetailsFleetReportedBreakdownTax>
     {
@@ -10,6 +13,9 @@ public class TransactionPurchaseDetailsFleetReportedBreakdownTax : StripeEntity<
         /// reported by merchant or not subject to tax.
         /// </summary>
         [JsonProperty("local_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("local_amount_decimal")]
+#endif
         public decimal? LocalAmountDecimal { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class TransactionPurchaseDetailsFleetReportedBreakdownTax : StripeEntity<
         /// reported by merchant or not subject to tax.
         /// </summary>
         [JsonProperty("national_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("national_amount_decimal")]
+#endif
         public decimal? NationalAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFlight.cs b/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFlight.cs
index 1b42a94621..648afbef57 100644
--- a/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFlight.cs
+++ b/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFlight.cs
@@ -5,6 +5,9 @@ namespace Stripe.Issuing
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionPurchaseDetailsFlight : StripeEntity<TransactionPurchaseDetailsFlight>
     {
@@ -13,30 +16,46 @@ public class TransactionPurchaseDetailsFlight : StripeEntity<TransactionPurchase
         /// </summary>
         [JsonProperty("departure_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("departure_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? DepartureAt { get; set; }
 
         /// <summary>
         /// The name of the passenger.
         /// </summary>
         [JsonProperty("passenger_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("passenger_name")]
+#endif
         public string PassengerName { get; set; }
 
         /// <summary>
         /// Whether the ticket is refundable.
         /// </summary>
         [JsonProperty("refundable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refundable")]
+#endif
         public bool? Refundable { get; set; }
 
         /// <summary>
         /// The legs of the trip.
         /// </summary>
         [JsonProperty("segments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("segments")]
+#endif
         public List<TransactionPurchaseDetailsFlightSegment> Segments { get; set; }
 
         /// <summary>
         /// The travel agency that issued the ticket.
         /// </summary>
         [JsonProperty("travel_agency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("travel_agency")]
+#endif
         public string TravelAgency { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFlightSegment.cs b/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFlightSegment.cs
index e52ee8b64f..144580280b 100644
--- a/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFlightSegment.cs
+++ b/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFlightSegment.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionPurchaseDetailsFlightSegment : StripeEntity<TransactionPurchaseDetailsFlightSegment>
     {
@@ -9,36 +12,54 @@ public class TransactionPurchaseDetailsFlightSegment : StripeEntity<TransactionP
         /// The three-letter IATA airport code of the flight's destination.
         /// </summary>
         [JsonProperty("arrival_airport_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("arrival_airport_code")]
+#endif
         public string ArrivalAirportCode { get; set; }
 
         /// <summary>
         /// The airline carrier code.
         /// </summary>
         [JsonProperty("carrier")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("carrier")]
+#endif
         public string Carrier { get; set; }
 
         /// <summary>
         /// The three-letter IATA airport code that the flight departed from.
         /// </summary>
         [JsonProperty("departure_airport_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("departure_airport_code")]
+#endif
         public string DepartureAirportCode { get; set; }
 
         /// <summary>
         /// The flight number.
         /// </summary>
         [JsonProperty("flight_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flight_number")]
+#endif
         public string FlightNumber { get; set; }
 
         /// <summary>
         /// The flight's service class.
         /// </summary>
         [JsonProperty("service_class")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("service_class")]
+#endif
         public string ServiceClass { get; set; }
 
         /// <summary>
         /// Whether a stopover is allowed on this flight.
         /// </summary>
         [JsonProperty("stopover_allowed")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("stopover_allowed")]
+#endif
         public bool? StopoverAllowed { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFuel.cs b/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFuel.cs
index e66340b6c4..44441fe319 100644
--- a/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFuel.cs
+++ b/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsFuel.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionPurchaseDetailsFuel : StripeEntity<TransactionPurchaseDetailsFuel>
     {
@@ -10,6 +13,9 @@ public class TransactionPurchaseDetailsFuel : StripeEntity<TransactionPurchaseDe
         /// Payment System Product Code</a> identifying the primary fuel product purchased.
         /// </summary>
         [JsonProperty("industry_product_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("industry_product_code")]
+#endif
         public string IndustryProductCode { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class TransactionPurchaseDetailsFuel : StripeEntity<TransactionPurchaseDe
         /// with at most 12 decimal places.
         /// </summary>
         [JsonProperty("quantity_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity_decimal")]
+#endif
         public decimal? QuantityDecimal { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class TransactionPurchaseDetailsFuel : StripeEntity<TransactionPurchaseDe
         /// <c>unleaded_regular</c>, <c>unleaded_super</c>, or <c>other</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
@@ -32,6 +44,9 @@ public class TransactionPurchaseDetailsFuel : StripeEntity<TransactionPurchaseDe
         /// <c>pound</c>, <c>us_gallon</c>, or <c>other</c>.
         /// </summary>
         [JsonProperty("unit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit")]
+#endif
         public string Unit { get; set; }
 
         /// <summary>
@@ -39,6 +54,9 @@ public class TransactionPurchaseDetailsFuel : StripeEntity<TransactionPurchaseDe
         /// decimal places.
         /// </summary>
         [JsonProperty("unit_cost_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_cost_decimal")]
+#endif
         public decimal UnitCostDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsLodging.cs b/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsLodging.cs
index 63c8038c77..035c3e8a96 100644
--- a/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsLodging.cs
+++ b/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsLodging.cs
@@ -4,6 +4,9 @@ namespace Stripe.Issuing
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionPurchaseDetailsLodging : StripeEntity<TransactionPurchaseDetailsLodging>
     {
@@ -12,12 +15,19 @@ public class TransactionPurchaseDetailsLodging : StripeEntity<TransactionPurchas
         /// </summary>
         [JsonProperty("check_in_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("check_in_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? CheckInAt { get; set; }
 
         /// <summary>
         /// The number of nights stayed at the lodging.
         /// </summary>
         [JsonProperty("nights")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("nights")]
+#endif
         public long? Nights { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsReceipt.cs b/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsReceipt.cs
index e949d6eefe..0a70ecc5ee 100644
--- a/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsReceipt.cs
+++ b/src/Stripe.net/Entities/Issuing/Transactions/TransactionPurchaseDetailsReceipt.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionPurchaseDetailsReceipt : StripeEntity<TransactionPurchaseDetailsReceipt>
     {
@@ -9,24 +12,36 @@ public class TransactionPurchaseDetailsReceipt : StripeEntity<TransactionPurchas
         /// The description of the item. The maximum length of this field is 26 characters.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// The quantity of the item.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public decimal? Quantity { get; set; }
 
         /// <summary>
         /// The total for this line item in cents.
         /// </summary>
         [JsonProperty("total")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("total")]
+#endif
         public long? Total { get; set; }
 
         /// <summary>
         /// The unit cost of the item in cents.
         /// </summary>
         [JsonProperty("unit_cost")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_cost")]
+#endif
         public long? UnitCost { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Issuing/Transactions/TransactionTreasury.cs b/src/Stripe.net/Entities/Issuing/Transactions/TransactionTreasury.cs
index 787a14f0f5..c3f8db34f9 100644
--- a/src/Stripe.net/Entities/Issuing/Transactions/TransactionTreasury.cs
+++ b/src/Stripe.net/Entities/Issuing/Transactions/TransactionTreasury.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionTreasury : StripeEntity<TransactionTreasury>
     {
@@ -11,6 +14,9 @@ public class TransactionTreasury : StripeEntity<TransactionTreasury>
         /// representing this Issuing transaction if it is a refund.
         /// </summary>
         [JsonProperty("received_credit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("received_credit")]
+#endif
         public string ReceivedCredit { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class TransactionTreasury : StripeEntity<TransactionTreasury>
         /// representing this Issuing transaction if it is a capture.
         /// </summary>
         [JsonProperty("received_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("received_debit")]
+#endif
         public string ReceivedDebit { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/LineItems/LineItem.cs b/src/Stripe.net/Entities/LineItems/LineItem.cs
index faa32b3d0e..46194b6be8 100644
--- a/src/Stripe.net/Entities/LineItems/LineItem.cs
+++ b/src/Stripe.net/Entities/LineItems/LineItem.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A line item.
@@ -13,36 +16,54 @@ public class LineItem : StripeEntity<LineItem>, IHasId, IHasObject
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Total discount amount applied. If no discounts were applied, defaults to 0.
         /// </summary>
         [JsonProperty("amount_discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_discount")]
+#endif
         public long AmountDiscount { get; set; }
 
         /// <summary>
         /// Total before any discounts or taxes are applied.
         /// </summary>
         [JsonProperty("amount_subtotal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_subtotal")]
+#endif
         public long AmountSubtotal { get; set; }
 
         /// <summary>
         /// Total tax amount applied. If no tax was applied, defaults to 0.
         /// </summary>
         [JsonProperty("amount_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_tax")]
+#endif
         public long AmountTax { get; set; }
 
         /// <summary>
         /// Total after discounts and taxes.
         /// </summary>
         [JsonProperty("amount_total")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_total")]
+#endif
         public long AmountTotal { get; set; }
 
         /// <summary>
@@ -51,12 +72,19 @@ public class LineItem : StripeEntity<LineItem>, IHasId, IHasObject
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// Whether this object is deleted or not.
         /// </summary>
         [JsonProperty("deleted", NullValueHandling = NullValueHandling.Ignore)]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+        [STJS.JsonIgnore(Condition = STJS.JsonIgnoreCondition.WhenWritingNull)]
+#endif
         public bool? Deleted { get; set; }
 
         /// <summary>
@@ -64,30 +92,45 @@ public class LineItem : StripeEntity<LineItem>, IHasId, IHasObject
         /// Defaults to product name.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// The discounts applied to the line item.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<LineItemDiscount> Discounts { get; set; }
 
         /// <summary>
         /// The price used to generate the line item.
         /// </summary>
         [JsonProperty("price")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price")]
+#endif
         public Price Price { get; set; }
 
         /// <summary>
         /// The quantity of products being purchased.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         /// <summary>
         /// The taxes applied to the line item.
         /// </summary>
         [JsonProperty("taxes")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxes")]
+#endif
         public List<LineItemTax> Taxes { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/LineItems/LineItemDiscount.cs b/src/Stripe.net/Entities/LineItems/LineItemDiscount.cs
index 52002bd56f..f75007c7ea 100644
--- a/src/Stripe.net/Entities/LineItems/LineItemDiscount.cs
+++ b/src/Stripe.net/Entities/LineItems/LineItemDiscount.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class LineItemDiscount : StripeEntity<LineItemDiscount>
     {
@@ -9,6 +12,9 @@ public class LineItemDiscount : StripeEntity<LineItemDiscount>
         /// The amount discounted.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -22,6 +28,9 @@ public class LineItemDiscount : StripeEntity<LineItemDiscount>
         /// subscriptions</a>.
         /// </summary>
         [JsonProperty("discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+#endif
         public Discount Discount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/LineItems/LineItemTax.cs b/src/Stripe.net/Entities/LineItems/LineItemTax.cs
index 99dd7edc9a..8ba5ff07b8 100644
--- a/src/Stripe.net/Entities/LineItems/LineItemTax.cs
+++ b/src/Stripe.net/Entities/LineItems/LineItemTax.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class LineItemTax : StripeEntity<LineItemTax>
     {
@@ -9,6 +12,9 @@ public class LineItemTax : StripeEntity<LineItemTax>
         /// Amount of tax applied for this rate.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class LineItemTax : StripeEntity<LineItemTax>
         /// Related guide: <a href="https://stripe.com/billing/taxes/tax-rates">Tax rates</a>.
         /// </summary>
         [JsonProperty("rate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("rate")]
+#endif
         public TaxRate Rate { get; set; }
 
         /// <summary>
@@ -33,12 +42,18 @@ public class LineItemTax : StripeEntity<LineItemTax>
         /// <c>standard_rated</c>, <c>taxable_basis_reduced</c>, or <c>zero_rated</c>.
         /// </summary>
         [JsonProperty("taxability_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxability_reason")]
+#endif
         public string TaxabilityReason { get; set; }
 
         /// <summary>
         /// The amount on which tax is calculated, in cents (or local equivalent).
         /// </summary>
         [JsonProperty("taxable_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxable_amount")]
+#endif
         public long? TaxableAmount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/LoginLinks/LoginLink.cs b/src/Stripe.net/Entities/LoginLinks/LoginLink.cs
index 53770195b9..5f128704dc 100644
--- a/src/Stripe.net/Entities/LoginLinks/LoginLink.cs
+++ b/src/Stripe.net/Entities/LoginLinks/LoginLink.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Login Links are single-use URLs for a connected account to access the Express Dashboard.
@@ -17,6 +20,9 @@ public class LoginLink : StripeEntity<LoginLink>, IHasObject
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -24,12 +30,19 @@ public class LoginLink : StripeEntity<LoginLink>, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// The URL for the login link.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Mandates/Mandate.cs b/src/Stripe.net/Entities/Mandates/Mandate.cs
index df95b93187..09191c3908 100644
--- a/src/Stripe.net/Entities/Mandates/Mandate.cs
+++ b/src/Stripe.net/Entities/Mandates/Mandate.cs
@@ -3,26 +3,41 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A Mandate is a record of the permission that your customer gives you to debit their
     /// payment method.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class Mandate : StripeEntity<Mandate>, IHasId, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         [JsonProperty("customer_acceptance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_acceptance")]
+#endif
         public MandateCustomerAcceptance CustomerAcceptance { get; set; }
 
         /// <summary>
@@ -30,15 +45,24 @@ public class Mandate : StripeEntity<Mandate>, IHasId, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         [JsonProperty("multi_use")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("multi_use")]
+#endif
         public MandateMultiUse MultiUse { get; set; }
 
         /// <summary>
         /// The account (if any) that the mandate is intended for.
         /// </summary>
         [JsonProperty("on_behalf_of")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+#endif
         public string OnBehalfOf { get; set; }
 
         #region Expandable PaymentMethod
@@ -48,6 +72,9 @@ public class Mandate : StripeEntity<Mandate>, IHasId, IHasObject
         /// ID of the payment method associated with this mandate.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string PaymentMethodId
         {
             get => this.InternalPaymentMethod?.Id;
@@ -61,6 +88,9 @@ public string PaymentMethodId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PaymentMethod PaymentMethod
         {
             get => this.InternalPaymentMethod?.ExpandedObject;
@@ -69,13 +99,23 @@ public PaymentMethod PaymentMethod
 
         [JsonProperty("payment_method")]
         [JsonConverter(typeof(ExpandableFieldConverter<PaymentMethod>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PaymentMethod>))]
+#endif
         internal ExpandableField<PaymentMethod> InternalPaymentMethod { get; set; }
         #endregion
 
         [JsonProperty("payment_method_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_details")]
+#endif
         public MandatePaymentMethodDetails PaymentMethodDetails { get; set; }
 
         [JsonProperty("single_use")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("single_use")]
+#endif
         public MandateSingleUse SingleUse { get; set; }
 
         /// <summary>
@@ -83,6 +123,9 @@ public PaymentMethod PaymentMethod
         /// One of: <c>active</c>, <c>inactive</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -90,6 +133,9 @@ public PaymentMethod PaymentMethod
         /// One of: <c>multi_use</c>, or <c>single_use</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Mandates/MandateCustomerAcceptance.cs b/src/Stripe.net/Entities/Mandates/MandateCustomerAcceptance.cs
index 02674d0fcd..e80839bebb 100644
--- a/src/Stripe.net/Entities/Mandates/MandateCustomerAcceptance.cs
+++ b/src/Stripe.net/Entities/Mandates/MandateCustomerAcceptance.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MandateCustomerAcceptance : StripeEntity<MandateCustomerAcceptance>
     {
@@ -12,12 +15,22 @@ public class MandateCustomerAcceptance : StripeEntity<MandateCustomerAcceptance>
         /// </summary>
         [JsonProperty("accepted_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("accepted_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? AcceptedAt { get; set; }
 
         [JsonProperty("offline")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("offline")]
+#endif
         public MandateCustomerAcceptanceOffline Offline { get; set; }
 
         [JsonProperty("online")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("online")]
+#endif
         public MandateCustomerAcceptanceOnline Online { get; set; }
 
         /// <summary>
@@ -26,6 +39,9 @@ public class MandateCustomerAcceptance : StripeEntity<MandateCustomerAcceptance>
         /// One of: <c>offline</c>, or <c>online</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Mandates/MandateCustomerAcceptanceOnline.cs b/src/Stripe.net/Entities/Mandates/MandateCustomerAcceptanceOnline.cs
index 80d58d5a75..19022acca4 100644
--- a/src/Stripe.net/Entities/Mandates/MandateCustomerAcceptanceOnline.cs
+++ b/src/Stripe.net/Entities/Mandates/MandateCustomerAcceptanceOnline.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MandateCustomerAcceptanceOnline : StripeEntity<MandateCustomerAcceptanceOnline>
     {
@@ -9,12 +12,18 @@ public class MandateCustomerAcceptanceOnline : StripeEntity<MandateCustomerAccep
         /// The customer accepts the mandate from this IP address.
         /// </summary>
         [JsonProperty("ip_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip_address")]
+#endif
         public string IpAddress { get; set; }
 
         /// <summary>
         /// The customer accepts the mandate using the user agent of the browser.
         /// </summary>
         [JsonProperty("user_agent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_agent")]
+#endif
         public string UserAgent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Mandates/MandatePaymentMethodDetails.cs b/src/Stripe.net/Entities/Mandates/MandatePaymentMethodDetails.cs
index 169a38087c..df27dbbe66 100644
--- a/src/Stripe.net/Entities/Mandates/MandatePaymentMethodDetails.cs
+++ b/src/Stripe.net/Entities/Mandates/MandatePaymentMethodDetails.cs
@@ -2,43 +2,82 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MandatePaymentMethodDetails : StripeEntity<MandatePaymentMethodDetails>
     {
         [JsonProperty("acss_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acss_debit")]
+#endif
         public MandatePaymentMethodDetailsAcssDebit AcssDebit { get; set; }
 
         [JsonProperty("amazon_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amazon_pay")]
+#endif
         public MandatePaymentMethodDetailsAmazonPay AmazonPay { get; set; }
 
         [JsonProperty("au_becs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("au_becs_debit")]
+#endif
         public MandatePaymentMethodDetailsAuBecsDebit AuBecsDebit { get; set; }
 
         [JsonProperty("bacs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bacs_debit")]
+#endif
         public MandatePaymentMethodDetailsBacsDebit BacsDebit { get; set; }
 
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public MandatePaymentMethodDetailsCard Card { get; set; }
 
         [JsonProperty("cashapp")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cashapp")]
+#endif
         public MandatePaymentMethodDetailsCashapp Cashapp { get; set; }
 
         [JsonProperty("kakao_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kakao_pay")]
+#endif
         public MandatePaymentMethodDetailsKakaoPay KakaoPay { get; set; }
 
         [JsonProperty("kr_card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kr_card")]
+#endif
         public MandatePaymentMethodDetailsKrCard KrCard { get; set; }
 
         [JsonProperty("link")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("link")]
+#endif
         public MandatePaymentMethodDetailsLink Link { get; set; }
 
         [JsonProperty("paypal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paypal")]
+#endif
         public MandatePaymentMethodDetailsPaypal Paypal { get; set; }
 
         [JsonProperty("revolut_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("revolut_pay")]
+#endif
         public MandatePaymentMethodDetailsRevolutPay RevolutPay { get; set; }
 
         [JsonProperty("sepa_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_debit")]
+#endif
         public MandatePaymentMethodDetailsSepaDebit SepaDebit { get; set; }
 
         /// <summary>
@@ -47,9 +86,15 @@ public class MandatePaymentMethodDetails : StripeEntity<MandatePaymentMethodDeta
         /// contains mandate information that's specific to that payment method.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public MandatePaymentMethodDetailsUsBankAccount UsBankAccount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Mandates/MandatePaymentMethodDetailsAcssDebit.cs b/src/Stripe.net/Entities/Mandates/MandatePaymentMethodDetailsAcssDebit.cs
index 67185d0c8d..f1e83ae78d 100644
--- a/src/Stripe.net/Entities/Mandates/MandatePaymentMethodDetailsAcssDebit.cs
+++ b/src/Stripe.net/Entities/Mandates/MandatePaymentMethodDetailsAcssDebit.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MandatePaymentMethodDetailsAcssDebit : StripeEntity<MandatePaymentMethodDetailsAcssDebit>
     {
@@ -11,6 +14,9 @@ public class MandatePaymentMethodDetailsAcssDebit : StripeEntity<MandatePaymentM
         /// One of: <c>invoice</c>, or <c>subscription</c>.
         /// </summary>
         [JsonProperty("default_for")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_for")]
+#endif
         public List<string> DefaultFor { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class MandatePaymentMethodDetailsAcssDebit : StripeEntity<MandatePaymentM
         /// 'interval' or 'combined'.
         /// </summary>
         [JsonProperty("interval_description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_description")]
+#endif
         public string IntervalDescription { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class MandatePaymentMethodDetailsAcssDebit : StripeEntity<MandatePaymentM
         /// One of: <c>combined</c>, <c>interval</c>, or <c>sporadic</c>.
         /// </summary>
         [JsonProperty("payment_schedule")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_schedule")]
+#endif
         public string PaymentSchedule { get; set; }
 
         /// <summary>
@@ -32,6 +44,9 @@ public class MandatePaymentMethodDetailsAcssDebit : StripeEntity<MandatePaymentM
         /// One of: <c>business</c>, or <c>personal</c>.
         /// </summary>
         [JsonProperty("transaction_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_type")]
+#endif
         public string TransactionType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Mandates/MandatePaymentMethodDetailsAuBecsDebit.cs b/src/Stripe.net/Entities/Mandates/MandatePaymentMethodDetailsAuBecsDebit.cs
index 51c646333d..ee70d58ca3 100644
--- a/src/Stripe.net/Entities/Mandates/MandatePaymentMethodDetailsAuBecsDebit.cs
+++ b/src/Stripe.net/Entities/Mandates/MandatePaymentMethodDetailsAuBecsDebit.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MandatePaymentMethodDetailsAuBecsDebit : StripeEntity<MandatePaymentMethodDetailsAuBecsDebit>
     {
@@ -10,6 +13,9 @@ public class MandatePaymentMethodDetailsAuBecsDebit : StripeEntity<MandatePaymen
         /// customer and should be shared with them exclusively.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Mandates/MandatePaymentMethodDetailsBacsDebit.cs b/src/Stripe.net/Entities/Mandates/MandatePaymentMethodDetailsBacsDebit.cs
index 6dcb55cd5a..20a1fdd8e2 100644
--- a/src/Stripe.net/Entities/Mandates/MandatePaymentMethodDetailsBacsDebit.cs
+++ b/src/Stripe.net/Entities/Mandates/MandatePaymentMethodDetailsBacsDebit.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MandatePaymentMethodDetailsBacsDebit : StripeEntity<MandatePaymentMethodDetailsBacsDebit>
     {
@@ -11,12 +14,18 @@ public class MandatePaymentMethodDetailsBacsDebit : StripeEntity<MandatePaymentM
         /// One of: <c>accepted</c>, <c>pending</c>, <c>refused</c>, or <c>revoked</c>.
         /// </summary>
         [JsonProperty("network_status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network_status")]
+#endif
         public string NetworkStatus { get; set; }
 
         /// <summary>
         /// The unique reference identifying the mandate on the Bacs network.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
@@ -26,12 +35,18 @@ public class MandatePaymentMethodDetailsBacsDebit : StripeEntity<MandatePaymentM
         /// <c>bank_ownership_changed</c>, <c>could_not_process</c>, or <c>debit_not_authorized</c>.
         /// </summary>
         [JsonProperty("revocation_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("revocation_reason")]
+#endif
         public string RevocationReason { get; set; }
 
         /// <summary>
         /// The URL that will contain the mandate that the customer has signed.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Mandates/MandatePaymentMethodDetailsPaypal.cs b/src/Stripe.net/Entities/Mandates/MandatePaymentMethodDetailsPaypal.cs
index e8e9c744c1..5298d8ec50 100644
--- a/src/Stripe.net/Entities/Mandates/MandatePaymentMethodDetailsPaypal.cs
+++ b/src/Stripe.net/Entities/Mandates/MandatePaymentMethodDetailsPaypal.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MandatePaymentMethodDetailsPaypal : StripeEntity<MandatePaymentMethodDetailsPaypal>
     {
@@ -10,12 +13,18 @@ public class MandatePaymentMethodDetailsPaypal : StripeEntity<MandatePaymentMeth
         /// represents the mandate between the merchant and the customer.
         /// </summary>
         [JsonProperty("billing_agreement_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_agreement_id")]
+#endif
         public string BillingAgreementId { get; set; }
 
         /// <summary>
         /// PayPal account PayerID. This identifier uniquely identifies the PayPal customer.
         /// </summary>
         [JsonProperty("payer_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payer_id")]
+#endif
         public string PayerId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Mandates/MandatePaymentMethodDetailsSepaDebit.cs b/src/Stripe.net/Entities/Mandates/MandatePaymentMethodDetailsSepaDebit.cs
index bcbd249f48..5c5f5d25de 100644
--- a/src/Stripe.net/Entities/Mandates/MandatePaymentMethodDetailsSepaDebit.cs
+++ b/src/Stripe.net/Entities/Mandates/MandatePaymentMethodDetailsSepaDebit.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MandatePaymentMethodDetailsSepaDebit : StripeEntity<MandatePaymentMethodDetailsSepaDebit>
     {
@@ -9,6 +12,9 @@ public class MandatePaymentMethodDetailsSepaDebit : StripeEntity<MandatePaymentM
         /// The unique reference of the mandate.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class MandatePaymentMethodDetailsSepaDebit : StripeEntity<MandatePaymentM
         /// customer and should be shared with them exclusively.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Mandates/MandatePaymentMethodDetailsUsBankAccount.cs b/src/Stripe.net/Entities/Mandates/MandatePaymentMethodDetailsUsBankAccount.cs
index 9dce558df7..e08bb16e2d 100644
--- a/src/Stripe.net/Entities/Mandates/MandatePaymentMethodDetailsUsBankAccount.cs
+++ b/src/Stripe.net/Entities/Mandates/MandatePaymentMethodDetailsUsBankAccount.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MandatePaymentMethodDetailsUsBankAccount : StripeEntity<MandatePaymentMethodDetailsUsBankAccount>
     {
@@ -9,6 +12,9 @@ public class MandatePaymentMethodDetailsUsBankAccount : StripeEntity<MandatePaym
         /// Mandate collection method.
         /// </summary>
         [JsonProperty("collection_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("collection_method")]
+#endif
         public string CollectionMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Mandates/MandateSingleUse.cs b/src/Stripe.net/Entities/Mandates/MandateSingleUse.cs
index da1df85b0e..dd86f19e37 100644
--- a/src/Stripe.net/Entities/Mandates/MandateSingleUse.cs
+++ b/src/Stripe.net/Entities/Mandates/MandateSingleUse.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MandateSingleUse : StripeEntity<MandateSingleUse>
     {
@@ -9,12 +12,18 @@ public class MandateSingleUse : StripeEntity<MandateSingleUse>
         /// The amount of the payment on a single use mandate.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
         /// The currency of the payment on a single use mandate.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/OAuth/OAuthDeauthorize.cs b/src/Stripe.net/Entities/OAuth/OAuthDeauthorize.cs
index 1c1bd43abb..ce27d265c5 100644
--- a/src/Stripe.net/Entities/OAuth/OAuthDeauthorize.cs
+++ b/src/Stripe.net/Entities/OAuth/OAuthDeauthorize.cs
@@ -1,6 +1,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OAuthDeauthorize : StripeEntity<OAuthDeauthorize>
     {
@@ -10,6 +13,9 @@ public class OAuthDeauthorize : StripeEntity<OAuthDeauthorize>
         /// returned, the revocation was successful.
         /// </summary>
         [JsonProperty("stripe_user_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("stripe_user_id")]
+#endif
         public string StripeUserId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/OAuth/OAuthToken.cs b/src/Stripe.net/Entities/OAuth/OAuthToken.cs
index 2583bf9bac..7bd8e99a69 100644
--- a/src/Stripe.net/Entities/OAuth/OAuthToken.cs
+++ b/src/Stripe.net/Entities/OAuth/OAuthToken.cs
@@ -2,6 +2,9 @@ namespace Stripe
 {
     using System;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OAuthToken : StripeEntity<OAuthToken>
     {
@@ -24,6 +27,9 @@ public class OAuthToken : StripeEntity<OAuthToken>
         /// </remarks>
         [Obsolete("Use StripeUserId instead.")]
         [JsonProperty("access_token")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("access_token")]
+#endif
         public string AccessToken { get; set; }
 
         /// <summary>
@@ -35,6 +41,9 @@ public class OAuthToken : StripeEntity<OAuthToken>
         /// <para>Depends on the mode of the secret API key used to make the request.</para>
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -49,6 +58,9 @@ public class OAuthToken : StripeEntity<OAuthToken>
         /// </remarks>
         [Obsolete("Use StripeUserId instead.")]
         [JsonProperty("refresh_token")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refresh_token")]
+#endif
         public string RefreshToken { get; set; }
 
         /// <summary>
@@ -56,6 +68,9 @@ public class OAuthToken : StripeEntity<OAuthToken>
         /// and <c>scope</c> parameter.
         /// </summary>
         [JsonProperty("scope")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("scope")]
+#endif
         public string Scope { get; set; }
 
         /// <summary>
@@ -69,16 +84,25 @@ public class OAuthToken : StripeEntity<OAuthToken>
         /// </remarks>
         [Obsolete("Use StripeUserId instead.")]
         [JsonProperty("stripe_publishable_key")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("stripe_publishable_key")]
+#endif
         public string StripePublishableKey { get; set; }
 
         /// <summary>
         /// The unique id of the account you have been granted access to, as a string.
         /// </summary>
         [JsonProperty("stripe_user_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("stripe_user_id")]
+#endif
         public string StripeUserId { get; set; }
 
         /// <summary>Will always have a value of <c>bearer</c>.</summary>
         [JsonProperty("token_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("token_type")]
+#endif
         public string TokenType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntent.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntent.cs
index 59638aeafa..3cce856521 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntent.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntent.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A PaymentIntent guides you through the process of collecting a payment from your
@@ -20,18 +23,27 @@ namespace Stripe
     /// Related guide: <a href="https://stripe.com/docs/payments/payment-intents">Payment
     /// Intents API</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class PaymentIntent : StripeEntity<PaymentIntent>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -45,21 +57,33 @@ public class PaymentIntent : StripeEntity<PaymentIntent>, IHasId, IHasMetadata,
         /// 99999999 for a USD charge of $999,999.99).
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
         /// Amount that can be captured from this PaymentIntent.
         /// </summary>
         [JsonProperty("amount_capturable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_capturable")]
+#endif
         public long AmountCapturable { get; set; }
 
         [JsonProperty("amount_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_details")]
+#endif
         public PaymentIntentAmountDetails AmountDetails { get; set; }
 
         /// <summary>
         /// Amount that this PaymentIntent collects.
         /// </summary>
         [JsonProperty("amount_received")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_received")]
+#endif
         public long AmountReceived { get; set; }
 
         #region Expandable Application
@@ -69,6 +93,9 @@ public class PaymentIntent : StripeEntity<PaymentIntent>, IHasId, IHasMetadata,
         /// ID of the Connect application that created the PaymentIntent.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ApplicationId
         {
             get => this.InternalApplication?.Id;
@@ -82,6 +109,9 @@ public string ApplicationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Application Application
         {
             get => this.InternalApplication?.ExpandedObject;
@@ -90,6 +120,10 @@ public Application Application
 
         [JsonProperty("application")]
         [JsonConverter(typeof(ExpandableFieldConverter<Application>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Application>))]
+#endif
         internal ExpandableField<Application> InternalApplication { get; set; }
         #endregion
 
@@ -102,6 +136,9 @@ public Application Application
         /// accounts</a>.
         /// </summary>
         [JsonProperty("application_fee_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_amount")]
+#endif
         public long? ApplicationFeeAmount { get; set; }
 
         /// <summary>
@@ -109,6 +146,9 @@ public Application Application
         /// href="https://dashboard.stripe.com/settings/payment_methods">Stripe Dashboard</a>.
         /// </summary>
         [JsonProperty("automatic_payment_methods")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatic_payment_methods")]
+#endif
         public PaymentIntentAutomaticPaymentMethods AutomaticPaymentMethods { get; set; }
 
         /// <summary>
@@ -117,6 +157,10 @@ public Application Application
         /// </summary>
         [JsonProperty("canceled_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("canceled_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? CanceledAt { get; set; }
 
         /// <summary>
@@ -127,6 +171,9 @@ public Application Application
         /// <c>fraudulent</c>, <c>requested_by_customer</c>, or <c>void_invoice</c>.
         /// </summary>
         [JsonProperty("cancellation_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancellation_reason")]
+#endif
         public string CancellationReason { get; set; }
 
         /// <summary>
@@ -134,6 +181,9 @@ public Application Application
         /// One of: <c>automatic</c>, <c>automatic_async</c>, or <c>manual</c>.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
@@ -149,6 +199,9 @@ public Application Application
         /// payment</a> and learn about how <c>client_secret</c> should be handled.
         /// </summary>
         [JsonProperty("client_secret")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("client_secret")]
+#endif
         public string ClientSecret { get; set; }
 
         /// <summary>
@@ -157,6 +210,9 @@ public Application Application
         /// One of: <c>automatic</c>, or <c>manual</c>.
         /// </summary>
         [JsonProperty("confirmation_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("confirmation_method")]
+#endif
         public string ConfirmationMethod { get; set; }
 
         /// <summary>
@@ -164,6 +220,10 @@ public Application Application
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -172,6 +232,9 @@ public Application Application
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         #region Expandable Customer
@@ -192,6 +255,9 @@ public Application Application
         /// payment method representing the card is created and attached to the Customer instead.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerId
         {
             get => this.InternalCustomer?.Id;
@@ -216,6 +282,9 @@ public string CustomerId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Customer Customer
         {
             get => this.InternalCustomer?.ExpandedObject;
@@ -224,6 +293,10 @@ public Customer Customer
 
         [JsonProperty("customer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Customer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Customer>))]
+#endif
         internal ExpandableField<Customer> InternalCustomer { get; set; }
         #endregion
 
@@ -231,6 +304,9 @@ public Customer Customer
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         #region Expandable Invoice
@@ -240,6 +316,9 @@ public Customer Customer
         /// ID of the invoice that created this PaymentIntent, if it exists.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string InvoiceId
         {
             get => this.InternalInvoice?.Id;
@@ -253,6 +332,9 @@ public string InvoiceId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Invoice Invoice
         {
             get => this.InternalInvoice?.ExpandedObject;
@@ -261,6 +343,10 @@ public Invoice Invoice
 
         [JsonProperty("invoice")]
         [JsonConverter(typeof(ExpandableFieldConverter<Invoice>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Invoice>))]
+#endif
         internal ExpandableField<Invoice> InternalInvoice { get; set; }
         #endregion
 
@@ -269,6 +355,9 @@ public Invoice Invoice
         /// cleared if the PaymentIntent is later updated for any reason.
         /// </summary>
         [JsonProperty("last_payment_error")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_payment_error")]
+#endif
         public StripeError LastPaymentError { get; set; }
 
         #region Expandable LatestCharge
@@ -280,6 +369,9 @@ public Invoice Invoice
         /// attempted.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string LatestChargeId
         {
             get => this.InternalLatestCharge?.Id;
@@ -295,6 +387,9 @@ public string LatestChargeId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Charge LatestCharge
         {
             get => this.InternalLatestCharge?.ExpandedObject;
@@ -303,6 +398,10 @@ public Charge LatestCharge
 
         [JsonProperty("latest_charge")]
         [JsonConverter(typeof(ExpandableFieldConverter<Charge>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("latest_charge")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Charge>))]
+#endif
         internal ExpandableField<Charge> InternalLatestCharge { get; set; }
         #endregion
 
@@ -311,6 +410,9 @@ public Charge LatestCharge
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -321,6 +423,9 @@ public Charge LatestCharge
         /// information in metadata</a>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -328,6 +433,9 @@ public Charge LatestCharge
         /// customer to fulfill a payment using the provided source.
         /// </summary>
         [JsonProperty("next_action")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("next_action")]
+#endif
         public PaymentIntentNextAction NextAction { get; set; }
 
         #region Expandable OnBehalfOf
@@ -339,6 +447,9 @@ public Charge LatestCharge
         /// for connected accounts</a> for details.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string OnBehalfOfId
         {
             get => this.InternalOnBehalfOf?.Id;
@@ -354,6 +465,9 @@ public string OnBehalfOfId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account OnBehalfOf
         {
             get => this.InternalOnBehalfOf?.ExpandedObject;
@@ -362,6 +476,10 @@ public Account OnBehalfOf
 
         [JsonProperty("on_behalf_of")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalOnBehalfOf { get; set; }
         #endregion
 
@@ -372,6 +490,9 @@ public Account OnBehalfOf
         /// ID of the payment method used in this PaymentIntent.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string PaymentMethodId
         {
             get => this.InternalPaymentMethod?.Id;
@@ -385,6 +506,9 @@ public string PaymentMethodId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PaymentMethod PaymentMethod
         {
             get => this.InternalPaymentMethod?.ExpandedObject;
@@ -393,6 +517,10 @@ public PaymentMethod PaymentMethod
 
         [JsonProperty("payment_method")]
         [JsonConverter(typeof(ExpandableFieldConverter<PaymentMethod>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PaymentMethod>))]
+#endif
         internal ExpandableField<PaymentMethod> InternalPaymentMethod { get; set; }
         #endregion
 
@@ -402,24 +530,36 @@ public PaymentMethod PaymentMethod
         /// configuration</a> used for this PaymentIntent.
         /// </summary>
         [JsonProperty("payment_method_configuration_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_configuration_details")]
+#endif
         public PaymentIntentPaymentMethodConfigurationDetails PaymentMethodConfigurationDetails { get; set; }
 
         /// <summary>
         /// Payment-method-specific configuration for this PaymentIntent.
         /// </summary>
         [JsonProperty("payment_method_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_options")]
+#endif
         public PaymentIntentPaymentMethodOptions PaymentMethodOptions { get; set; }
 
         /// <summary>
         /// The list of payment method types (e.g. card) that this PaymentIntent is allowed to use.
         /// </summary>
         [JsonProperty("payment_method_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_types")]
+#endif
         public List<string> PaymentMethodTypes { get; set; }
 
         /// <summary>
         /// If present, this property tells you about the processing state of the payment.
         /// </summary>
         [JsonProperty("processing")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("processing")]
+#endif
         public PaymentIntentProcessing Processing { get; set; }
 
         /// <summary>
@@ -429,6 +569,9 @@ public PaymentMethod PaymentMethod
         /// settings</a>.
         /// </summary>
         [JsonProperty("receipt_email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("receipt_email")]
+#endif
         public string ReceiptEmail { get; set; }
 
         #region Expandable Review
@@ -438,6 +581,9 @@ public PaymentMethod PaymentMethod
         /// ID of the review associated with this PaymentIntent, if any.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ReviewId
         {
             get => this.InternalReview?.Id;
@@ -451,6 +597,9 @@ public string ReviewId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Review Review
         {
             get => this.InternalReview?.ExpandedObject;
@@ -459,6 +608,10 @@ public Review Review
 
         [JsonProperty("review")]
         [JsonConverter(typeof(ExpandableFieldConverter<Review>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("review")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Review>))]
+#endif
         internal ExpandableField<Review> InternalReview { get; set; }
         #endregion
 
@@ -484,12 +637,18 @@ public Review Review
         /// One of: <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
         /// Shipping information for this PaymentIntent.
         /// </summary>
         [JsonProperty("shipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping")]
+#endif
         public Shipping Shipping { get; set; }
 
         #region Expandable Source
@@ -500,6 +659,9 @@ public Review Review
         /// object that is associated with this PaymentIntent, if one was supplied.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string SourceId
         {
             get => this.InternalSource?.Id;
@@ -514,6 +676,9 @@ public string SourceId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public IPaymentSource Source
         {
             get => this.InternalSource?.ExpandedObject;
@@ -522,6 +687,10 @@ public IPaymentSource Source
 
         [JsonProperty("source")]
         [JsonConverter(typeof(ExpandableFieldConverter<IPaymentSource>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<IPaymentSource>))]
+#endif
         internal ExpandableField<IPaymentSource> InternalSource { get; set; }
         #endregion
 
@@ -537,6 +706,9 @@ public IPaymentSource Source
         /// instead.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
 
         /// <summary>
@@ -546,6 +718,9 @@ public IPaymentSource Source
         /// customer's statement.
         /// </summary>
         [JsonProperty("statement_descriptor_suffix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_suffix")]
+#endif
         public string StatementDescriptorSuffix { get; set; }
 
         /// <summary>
@@ -559,6 +734,9 @@ public IPaymentSource Source
         /// or <c>succeeded</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -567,6 +745,9 @@ public IPaymentSource Source
         /// connected accounts</a>.
         /// </summary>
         [JsonProperty("transfer_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_data")]
+#endif
         public PaymentIntentTransferData TransferData { get; set; }
 
         /// <summary>
@@ -575,6 +756,9 @@ public IPaymentSource Source
         /// connected accounts</a>.
         /// </summary>
         [JsonProperty("transfer_group")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_group")]
+#endif
         public string TransferGroup { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentAmountDetails.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentAmountDetails.cs
index eaba2c918a..1f305f7dcf 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentAmountDetails.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentAmountDetails.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentAmountDetails : StripeEntity<PaymentIntentAmountDetails>
     {
         [JsonProperty("tip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tip")]
+#endif
         public PaymentIntentAmountDetailsTip Tip { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentAmountDetailsTip.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentAmountDetailsTip.cs
index 42ea7831c1..0dec8c711b 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentAmountDetailsTip.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentAmountDetailsTip.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentAmountDetailsTip : StripeEntity<PaymentIntentAmountDetailsTip>
     {
@@ -9,6 +12,9 @@ public class PaymentIntentAmountDetailsTip : StripeEntity<PaymentIntentAmountDet
         /// Portion of the amount that corresponds to a tip.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentAutomaticPaymentMethods.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentAutomaticPaymentMethods.cs
index 73341c7b71..dfc1aed31f 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentAutomaticPaymentMethods.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentAutomaticPaymentMethods.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentAutomaticPaymentMethods : StripeEntity<PaymentIntentAutomaticPaymentMethods>
     {
@@ -16,12 +19,18 @@ public class PaymentIntentAutomaticPaymentMethods : StripeEntity<PaymentIntentAu
         /// One of: <c>always</c>, or <c>never</c>.
         /// </summary>
         [JsonProperty("allow_redirects")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allow_redirects")]
+#endif
         public string AllowRedirects { get; set; }
 
         /// <summary>
         /// Automatically calculates compatible payment methods.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextAction.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextAction.cs
index 75f813e450..08e2825a31 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextAction.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextAction.cs
@@ -2,46 +2,88 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextAction : StripeEntity<PaymentIntentNextAction>
     {
         [JsonProperty("alipay_handle_redirect")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alipay_handle_redirect")]
+#endif
         public PaymentIntentNextActionAlipayHandleRedirect AlipayHandleRedirect { get; set; }
 
         [JsonProperty("boleto_display_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("boleto_display_details")]
+#endif
         public PaymentIntentNextActionBoletoDisplayDetails BoletoDisplayDetails { get; set; }
 
         [JsonProperty("card_await_notification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_await_notification")]
+#endif
         public PaymentIntentNextActionCardAwaitNotification CardAwaitNotification { get; set; }
 
         [JsonProperty("cashapp_handle_redirect_or_display_qr_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cashapp_handle_redirect_or_display_qr_code")]
+#endif
         public PaymentIntentNextActionCashappHandleRedirectOrDisplayQrCode CashappHandleRedirectOrDisplayQrCode { get; set; }
 
         [JsonProperty("display_bank_transfer_instructions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_bank_transfer_instructions")]
+#endif
         public PaymentIntentNextActionDisplayBankTransferInstructions DisplayBankTransferInstructions { get; set; }
 
         [JsonProperty("konbini_display_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("konbini_display_details")]
+#endif
         public PaymentIntentNextActionKonbiniDisplayDetails KonbiniDisplayDetails { get; set; }
 
         [JsonProperty("multibanco_display_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("multibanco_display_details")]
+#endif
         public PaymentIntentNextActionMultibancoDisplayDetails MultibancoDisplayDetails { get; set; }
 
         [JsonProperty("oxxo_display_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("oxxo_display_details")]
+#endif
         public PaymentIntentNextActionOxxoDisplayDetails OxxoDisplayDetails { get; set; }
 
         [JsonProperty("paynow_display_qr_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paynow_display_qr_code")]
+#endif
         public PaymentIntentNextActionPaynowDisplayQrCode PaynowDisplayQrCode { get; set; }
 
         [JsonProperty("pix_display_qr_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pix_display_qr_code")]
+#endif
         public PaymentIntentNextActionPixDisplayQrCode PixDisplayQrCode { get; set; }
 
         [JsonProperty("promptpay_display_qr_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promptpay_display_qr_code")]
+#endif
         public PaymentIntentNextActionPromptpayDisplayQrCode PromptpayDisplayQrCode { get; set; }
 
         [JsonProperty("redirect_to_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("redirect_to_url")]
+#endif
         public PaymentIntentNextActionRedirectToUrl RedirectToUrl { get; set; }
 
         [JsonProperty("swish_handle_redirect_or_display_qr_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("swish_handle_redirect_or_display_qr_code")]
+#endif
         public PaymentIntentNextActionSwishHandleRedirectOrDisplayQrCode SwishHandleRedirectOrDisplayQrCode { get; set; }
 
         /// <summary>
@@ -50,6 +92,9 @@ public class PaymentIntentNextAction : StripeEntity<PaymentIntentNextAction>
         /// <c>verify_with_microdeposits</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
@@ -58,18 +103,33 @@ public class PaymentIntentNextAction : StripeEntity<PaymentIntentNextAction>
         /// change and is only intended to be used by Stripe.js.
         /// </summary>
         [JsonProperty("use_stripe_sdk")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("use_stripe_sdk")]
+#endif
         public PaymentIntentNextActionUseStripeSdk UseStripeSdk { get; set; }
 
         [JsonProperty("verify_with_microdeposits")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verify_with_microdeposits")]
+#endif
         public PaymentIntentNextActionVerifyWithMicrodeposits VerifyWithMicrodeposits { get; set; }
 
         [JsonProperty("wechat_pay_display_qr_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wechat_pay_display_qr_code")]
+#endif
         public PaymentIntentNextActionWechatPayDisplayQrCode WechatPayDisplayQrCode { get; set; }
 
         [JsonProperty("wechat_pay_redirect_to_android_app")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wechat_pay_redirect_to_android_app")]
+#endif
         public PaymentIntentNextActionWechatPayRedirectToAndroidApp WechatPayRedirectToAndroidApp { get; set; }
 
         [JsonProperty("wechat_pay_redirect_to_ios_app")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wechat_pay_redirect_to_ios_app")]
+#endif
         public PaymentIntentNextActionWechatPayRedirectToIosApp WechatPayRedirectToIosApp { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionAlipayHandleRedirect.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionAlipayHandleRedirect.cs
index cd90db5da9..7894fc2399 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionAlipayHandleRedirect.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionAlipayHandleRedirect.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionAlipayHandleRedirect : StripeEntity<PaymentIntentNextActionAlipayHandleRedirect>
     {
@@ -10,6 +13,9 @@ public class PaymentIntentNextActionAlipayHandleRedirect : StripeEntity<PaymentI
         /// to authenticate the payment in an Android App.
         /// </summary>
         [JsonProperty("native_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("native_data")]
+#endif
         public string NativeData { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentIntentNextActionAlipayHandleRedirect : StripeEntity<PaymentI
         /// in an iOS App.
         /// </summary>
         [JsonProperty("native_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("native_url")]
+#endif
         public string NativeUrl { get; set; }
 
         /// <summary>
@@ -24,12 +33,18 @@ public class PaymentIntentNextActionAlipayHandleRedirect : StripeEntity<PaymentI
         /// redirected to this specified URL after completion.
         /// </summary>
         [JsonProperty("return_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_url")]
+#endif
         public string ReturnUrl { get; set; }
 
         /// <summary>
         /// The URL you must redirect your customer to in order to authenticate the payment.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionBoletoDisplayDetails.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionBoletoDisplayDetails.cs
index 59a062d1a0..abba0fd287 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionBoletoDisplayDetails.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionBoletoDisplayDetails.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionBoletoDisplayDetails : StripeEntity<PaymentIntentNextActionBoletoDisplayDetails>
     {
@@ -12,6 +15,10 @@ public class PaymentIntentNextActionBoletoDisplayDetails : StripeEntity<PaymentI
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpiresAt { get; set; }
 
         /// <summary>
@@ -19,18 +26,27 @@ public class PaymentIntentNextActionBoletoDisplayDetails : StripeEntity<PaymentI
         /// voucher.
         /// </summary>
         [JsonProperty("hosted_voucher_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hosted_voucher_url")]
+#endif
         public string HostedVoucherUrl { get; set; }
 
         /// <summary>
         /// The boleto number.
         /// </summary>
         [JsonProperty("number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("number")]
+#endif
         public string Number { get; set; }
 
         /// <summary>
         /// The URL to the downloadable boleto voucher PDF.
         /// </summary>
         [JsonProperty("pdf")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pdf")]
+#endif
         public string Pdf { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionCardAwaitNotification.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionCardAwaitNotification.cs
index 9adfdd970a..1811cf936b 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionCardAwaitNotification.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionCardAwaitNotification.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionCardAwaitNotification : StripeEntity<PaymentIntentNextActionCardAwaitNotification>
     {
@@ -13,6 +16,10 @@ public class PaymentIntentNextActionCardAwaitNotification : StripeEntity<Payment
         /// </summary>
         [JsonProperty("charge_attempt_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("charge_attempt_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ChargeAttemptAt { get; set; }
 
         /// <summary>
@@ -20,6 +27,9 @@ public class PaymentIntentNextActionCardAwaitNotification : StripeEntity<Payment
         /// payment with their bank. For payments of lower amount, no customer action is required.
         /// </summary>
         [JsonProperty("customer_approval_required")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_approval_required")]
+#endif
         public bool? CustomerApprovalRequired { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionCashappHandleRedirectOrDisplayQrCode.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionCashappHandleRedirectOrDisplayQrCode.cs
index bc709e426b..dab493acc1 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionCashappHandleRedirectOrDisplayQrCode.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionCashappHandleRedirectOrDisplayQrCode.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionCashappHandleRedirectOrDisplayQrCode : StripeEntity<PaymentIntentNextActionCashappHandleRedirectOrDisplayQrCode>
     {
@@ -10,15 +13,24 @@ public class PaymentIntentNextActionCashappHandleRedirectOrDisplayQrCode : Strip
         /// QR code, and supports QR code refreshing on expiration.
         /// </summary>
         [JsonProperty("hosted_instructions_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hosted_instructions_url")]
+#endif
         public string HostedInstructionsUrl { get; set; }
 
         /// <summary>
         /// The url for mobile redirect based auth.
         /// </summary>
         [JsonProperty("mobile_auth_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mobile_auth_url")]
+#endif
         public string MobileAuthUrl { get; set; }
 
         [JsonProperty("qr_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("qr_code")]
+#endif
         public PaymentIntentNextActionCashappHandleRedirectOrDisplayQrCodeQrCode QrCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionCashappHandleRedirectOrDisplayQrCodeQrCode.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionCashappHandleRedirectOrDisplayQrCodeQrCode.cs
index aaddf2f79a..8862da26fd 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionCashappHandleRedirectOrDisplayQrCodeQrCode.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionCashappHandleRedirectOrDisplayQrCodeQrCode.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionCashappHandleRedirectOrDisplayQrCodeQrCode : StripeEntity<PaymentIntentNextActionCashappHandleRedirectOrDisplayQrCodeQrCode>
     {
@@ -12,18 +15,28 @@ public class PaymentIntentNextActionCashappHandleRedirectOrDisplayQrCodeQrCode :
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime ExpiresAt { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// The image_url_png string used to render QR code.
         /// </summary>
         [JsonProperty("image_url_png")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("image_url_png")]
+#endif
         public string ImageUrlPng { get; set; }
 
         /// <summary>
         /// The image_url_svg string used to render QR code.
         /// </summary>
         [JsonProperty("image_url_svg")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("image_url_svg")]
+#endif
         public string ImageUrlSvg { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructions.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructions.cs
index e3952e12b7..6692e453e0 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructions.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionDisplayBankTransferInstructions : StripeEntity<PaymentIntentNextActionDisplayBankTransferInstructions>
     {
@@ -10,6 +13,9 @@ public class PaymentIntentNextActionDisplayBankTransferInstructions : StripeEnti
         /// The remaining amount that needs to be transferred to complete the payment.
         /// </summary>
         [JsonProperty("amount_remaining")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_remaining")]
+#endif
         public long? AmountRemaining { get; set; }
 
         /// <summary>
@@ -18,18 +24,27 @@ public class PaymentIntentNextActionDisplayBankTransferInstructions : StripeEnti
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// A list of financial addresses that can be used to fund the customer balance.
         /// </summary>
         [JsonProperty("financial_addresses")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_addresses")]
+#endif
         public List<PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddress> FinancialAddresses { get; set; }
 
         /// <summary>
         /// A link to a hosted page that guides your customer through completing the transfer.
         /// </summary>
         [JsonProperty("hosted_instructions_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hosted_instructions_url")]
+#endif
         public string HostedInstructionsUrl { get; set; }
 
         /// <summary>
@@ -37,6 +52,9 @@ public class PaymentIntentNextActionDisplayBankTransferInstructions : StripeEnti
         /// reference or memo field of their bank transfer.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
@@ -45,6 +63,9 @@ public class PaymentIntentNextActionDisplayBankTransferInstructions : StripeEnti
         /// <c>mx_bank_transfer</c>, or <c>us_bank_transfer</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddress.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddress.cs
index c2cadabd86..a9cd85a78b 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddress.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddress.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddress : StripeEntity<PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddress>
     {
@@ -10,24 +13,36 @@ public class PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddr
         /// ABA Records contain U.S. bank account details per the ABA format.
         /// </summary>
         [JsonProperty("aba")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("aba")]
+#endif
         public PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressAba Aba { get; set; }
 
         /// <summary>
         /// Iban Records contain E.U. bank account details per the SEPA format.
         /// </summary>
         [JsonProperty("iban")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iban")]
+#endif
         public PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressIban Iban { get; set; }
 
         /// <summary>
         /// Sort Code Records contain U.K. bank account details per the sort code format.
         /// </summary>
         [JsonProperty("sort_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sort_code")]
+#endif
         public PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressSortCode SortCode { get; set; }
 
         /// <summary>
         /// SPEI Records contain Mexico bank account details per the SPEI format.
         /// </summary>
         [JsonProperty("spei")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("spei")]
+#endif
         public PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressSpei Spei { get; set; }
 
         /// <summary>
@@ -36,12 +51,18 @@ public class PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddr
         /// <c>spei</c>, <c>swift</c>, or <c>zengin</c>.
         /// </summary>
         [JsonProperty("supported_networks")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("supported_networks")]
+#endif
         public List<string> SupportedNetworks { get; set; }
 
         /// <summary>
         /// SWIFT Records contain U.S. bank account details per the SWIFT format.
         /// </summary>
         [JsonProperty("swift")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("swift")]
+#endif
         public PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressSwift Swift { get; set; }
 
         /// <summary>
@@ -50,12 +71,18 @@ public class PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddr
         /// <c>zengin</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
         /// Zengin Records contain Japan bank account details per the Zengin format.
         /// </summary>
         [JsonProperty("zengin")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("zengin")]
+#endif
         public PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressZengin Zengin { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressAba.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressAba.cs
index f02d9d213e..98443a9b72 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressAba.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressAba.cs
@@ -2,43 +2,67 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressAba : StripeEntity<PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressAba>
     {
         [JsonProperty("account_holder_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_address")]
+#endif
         public Address AccountHolderAddress { get; set; }
 
         /// <summary>
         /// The account holder name.
         /// </summary>
         [JsonProperty("account_holder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_name")]
+#endif
         public string AccountHolderName { get; set; }
 
         /// <summary>
         /// The ABA account number.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
         /// The account type.
         /// </summary>
         [JsonProperty("account_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_type")]
+#endif
         public string AccountType { get; set; }
 
         [JsonProperty("bank_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_address")]
+#endif
         public Address BankAddress { get; set; }
 
         /// <summary>
         /// The bank name.
         /// </summary>
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         /// <summary>
         /// The ABA routing number.
         /// </summary>
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressIban.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressIban.cs
index 513660a13a..20aca448ec 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressIban.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressIban.cs
@@ -2,25 +2,40 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressIban : StripeEntity<PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressIban>
     {
         [JsonProperty("account_holder_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_address")]
+#endif
         public Address AccountHolderAddress { get; set; }
 
         /// <summary>
         /// The name of the person or business that owns the bank account.
         /// </summary>
         [JsonProperty("account_holder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_name")]
+#endif
         public string AccountHolderName { get; set; }
 
         [JsonProperty("bank_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_address")]
+#endif
         public Address BankAddress { get; set; }
 
         /// <summary>
         /// The BIC/SWIFT code of the account.
         /// </summary>
         [JsonProperty("bic")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bic")]
+#endif
         public string Bic { get; set; }
 
         /// <summary>
@@ -28,12 +43,18 @@ public class PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddr
         /// 3166-1 alpha-2</a>).
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
         /// The IBAN of the account.
         /// </summary>
         [JsonProperty("iban")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iban")]
+#endif
         public string Iban { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressSortCode.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressSortCode.cs
index a4ec2ecdaa..9bb0f95341 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressSortCode.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressSortCode.cs
@@ -2,31 +2,49 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressSortCode : StripeEntity<PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressSortCode>
     {
         [JsonProperty("account_holder_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_address")]
+#endif
         public Address AccountHolderAddress { get; set; }
 
         /// <summary>
         /// The name of the person or business that owns the bank account.
         /// </summary>
         [JsonProperty("account_holder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_name")]
+#endif
         public string AccountHolderName { get; set; }
 
         /// <summary>
         /// The account number.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         [JsonProperty("bank_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_address")]
+#endif
         public Address BankAddress { get; set; }
 
         /// <summary>
         /// The six-digit sort code.
         /// </summary>
         [JsonProperty("sort_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sort_code")]
+#endif
         public string SortCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressSpei.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressSpei.cs
index ef85932d4e..fac4aee8fe 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressSpei.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressSpei.cs
@@ -2,37 +2,58 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressSpei : StripeEntity<PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressSpei>
     {
         [JsonProperty("account_holder_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_address")]
+#endif
         public Address AccountHolderAddress { get; set; }
 
         /// <summary>
         /// The account holder name.
         /// </summary>
         [JsonProperty("account_holder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_name")]
+#endif
         public string AccountHolderName { get; set; }
 
         [JsonProperty("bank_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_address")]
+#endif
         public Address BankAddress { get; set; }
 
         /// <summary>
         /// The three-digit bank code.
         /// </summary>
         [JsonProperty("bank_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_code")]
+#endif
         public string BankCode { get; set; }
 
         /// <summary>
         /// The short banking institution name.
         /// </summary>
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         /// <summary>
         /// The CLABE number.
         /// </summary>
         [JsonProperty("clabe")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("clabe")]
+#endif
         public string Clabe { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressSwift.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressSwift.cs
index 414f53b251..594de88411 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressSwift.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressSwift.cs
@@ -2,43 +2,67 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressSwift : StripeEntity<PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressSwift>
     {
         [JsonProperty("account_holder_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_address")]
+#endif
         public Address AccountHolderAddress { get; set; }
 
         /// <summary>
         /// The account holder name.
         /// </summary>
         [JsonProperty("account_holder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_name")]
+#endif
         public string AccountHolderName { get; set; }
 
         /// <summary>
         /// The account number.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
         /// The account type.
         /// </summary>
         [JsonProperty("account_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_type")]
+#endif
         public string AccountType { get; set; }
 
         [JsonProperty("bank_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_address")]
+#endif
         public Address BankAddress { get; set; }
 
         /// <summary>
         /// The bank name.
         /// </summary>
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         /// <summary>
         /// The SWIFT code.
         /// </summary>
         [JsonProperty("swift_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("swift_code")]
+#endif
         public string SwiftCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressZengin.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressZengin.cs
index 0800b3ab59..c50c6b416a 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressZengin.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressZengin.cs
@@ -2,55 +2,85 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressZengin : StripeEntity<PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressZengin>
     {
         [JsonProperty("account_holder_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_address")]
+#endif
         public Address AccountHolderAddress { get; set; }
 
         /// <summary>
         /// The account holder name.
         /// </summary>
         [JsonProperty("account_holder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_name")]
+#endif
         public string AccountHolderName { get; set; }
 
         /// <summary>
         /// The account number.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
         /// The bank account type. In Japan, this can only be <c>futsu</c> or <c>toza</c>.
         /// </summary>
         [JsonProperty("account_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_type")]
+#endif
         public string AccountType { get; set; }
 
         [JsonProperty("bank_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_address")]
+#endif
         public Address BankAddress { get; set; }
 
         /// <summary>
         /// The bank code of the account.
         /// </summary>
         [JsonProperty("bank_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_code")]
+#endif
         public string BankCode { get; set; }
 
         /// <summary>
         /// The bank name of the account.
         /// </summary>
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         /// <summary>
         /// The branch code of the account.
         /// </summary>
         [JsonProperty("branch_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("branch_code")]
+#endif
         public string BranchCode { get; set; }
 
         /// <summary>
         /// The branch name of the account.
         /// </summary>
         [JsonProperty("branch_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("branch_name")]
+#endif
         public string BranchName { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionKonbiniDisplayDetails.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionKonbiniDisplayDetails.cs
index a49f8dffcf..0346fd9dce 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionKonbiniDisplayDetails.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionKonbiniDisplayDetails.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionKonbiniDisplayDetails : StripeEntity<PaymentIntentNextActionKonbiniDisplayDetails>
     {
@@ -12,6 +15,10 @@ public class PaymentIntentNextActionKonbiniDisplayDetails : StripeEntity<Payment
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime ExpiresAt { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -19,9 +26,15 @@ public class PaymentIntentNextActionKonbiniDisplayDetails : StripeEntity<Payment
         /// print a Konbini voucher.
         /// </summary>
         [JsonProperty("hosted_voucher_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hosted_voucher_url")]
+#endif
         public string HostedVoucherUrl { get; set; }
 
         [JsonProperty("stores")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("stores")]
+#endif
         public PaymentIntentNextActionKonbiniDisplayDetailsStores Stores { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionKonbiniDisplayDetailsStores.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionKonbiniDisplayDetailsStores.cs
index 4c23f93cb5..93de7cc5c0 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionKonbiniDisplayDetailsStores.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionKonbiniDisplayDetailsStores.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionKonbiniDisplayDetailsStores : StripeEntity<PaymentIntentNextActionKonbiniDisplayDetailsStores>
     {
@@ -9,24 +12,36 @@ public class PaymentIntentNextActionKonbiniDisplayDetailsStores : StripeEntity<P
         /// FamilyMart instruction details.
         /// </summary>
         [JsonProperty("familymart")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("familymart")]
+#endif
         public PaymentIntentNextActionKonbiniDisplayDetailsStoresFamilymart Familymart { get; set; }
 
         /// <summary>
         /// Lawson instruction details.
         /// </summary>
         [JsonProperty("lawson")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lawson")]
+#endif
         public PaymentIntentNextActionKonbiniDisplayDetailsStoresLawson Lawson { get; set; }
 
         /// <summary>
         /// Ministop instruction details.
         /// </summary>
         [JsonProperty("ministop")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ministop")]
+#endif
         public PaymentIntentNextActionKonbiniDisplayDetailsStoresMinistop Ministop { get; set; }
 
         /// <summary>
         /// Seicomart instruction details.
         /// </summary>
         [JsonProperty("seicomart")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("seicomart")]
+#endif
         public PaymentIntentNextActionKonbiniDisplayDetailsStoresSeicomart Seicomart { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionKonbiniDisplayDetailsStoresFamilymart.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionKonbiniDisplayDetailsStoresFamilymart.cs
index 7af4c7a4c8..2aea828a40 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionKonbiniDisplayDetailsStoresFamilymart.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionKonbiniDisplayDetailsStoresFamilymart.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionKonbiniDisplayDetailsStoresFamilymart : StripeEntity<PaymentIntentNextActionKonbiniDisplayDetailsStoresFamilymart>
     {
@@ -9,12 +12,18 @@ public class PaymentIntentNextActionKonbiniDisplayDetailsStoresFamilymart : Stri
         /// The confirmation number.
         /// </summary>
         [JsonProperty("confirmation_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("confirmation_number")]
+#endif
         public string ConfirmationNumber { get; set; }
 
         /// <summary>
         /// The payment code.
         /// </summary>
         [JsonProperty("payment_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_code")]
+#endif
         public string PaymentCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionKonbiniDisplayDetailsStoresLawson.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionKonbiniDisplayDetailsStoresLawson.cs
index f14deee3b1..f2c6a7439d 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionKonbiniDisplayDetailsStoresLawson.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionKonbiniDisplayDetailsStoresLawson.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionKonbiniDisplayDetailsStoresLawson : StripeEntity<PaymentIntentNextActionKonbiniDisplayDetailsStoresLawson>
     {
@@ -9,12 +12,18 @@ public class PaymentIntentNextActionKonbiniDisplayDetailsStoresLawson : StripeEn
         /// The confirmation number.
         /// </summary>
         [JsonProperty("confirmation_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("confirmation_number")]
+#endif
         public string ConfirmationNumber { get; set; }
 
         /// <summary>
         /// The payment code.
         /// </summary>
         [JsonProperty("payment_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_code")]
+#endif
         public string PaymentCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionKonbiniDisplayDetailsStoresMinistop.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionKonbiniDisplayDetailsStoresMinistop.cs
index fa8751d4e5..260aead678 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionKonbiniDisplayDetailsStoresMinistop.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionKonbiniDisplayDetailsStoresMinistop.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionKonbiniDisplayDetailsStoresMinistop : StripeEntity<PaymentIntentNextActionKonbiniDisplayDetailsStoresMinistop>
     {
@@ -9,12 +12,18 @@ public class PaymentIntentNextActionKonbiniDisplayDetailsStoresMinistop : Stripe
         /// The confirmation number.
         /// </summary>
         [JsonProperty("confirmation_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("confirmation_number")]
+#endif
         public string ConfirmationNumber { get; set; }
 
         /// <summary>
         /// The payment code.
         /// </summary>
         [JsonProperty("payment_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_code")]
+#endif
         public string PaymentCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionKonbiniDisplayDetailsStoresSeicomart.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionKonbiniDisplayDetailsStoresSeicomart.cs
index 29f628ead5..5961d952eb 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionKonbiniDisplayDetailsStoresSeicomart.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionKonbiniDisplayDetailsStoresSeicomart.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionKonbiniDisplayDetailsStoresSeicomart : StripeEntity<PaymentIntentNextActionKonbiniDisplayDetailsStoresSeicomart>
     {
@@ -9,12 +12,18 @@ public class PaymentIntentNextActionKonbiniDisplayDetailsStoresSeicomart : Strip
         /// The confirmation number.
         /// </summary>
         [JsonProperty("confirmation_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("confirmation_number")]
+#endif
         public string ConfirmationNumber { get; set; }
 
         /// <summary>
         /// The payment code.
         /// </summary>
         [JsonProperty("payment_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_code")]
+#endif
         public string PaymentCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionMultibancoDisplayDetails.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionMultibancoDisplayDetails.cs
index 07b5868eb7..55e3500aa2 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionMultibancoDisplayDetails.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionMultibancoDisplayDetails.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionMultibancoDisplayDetails : StripeEntity<PaymentIntentNextActionMultibancoDisplayDetails>
     {
@@ -11,6 +14,9 @@ public class PaymentIntentNextActionMultibancoDisplayDetails : StripeEntity<Paym
         /// Entity number associated with this Multibanco payment.
         /// </summary>
         [JsonProperty("entity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("entity")]
+#endif
         public string Entity { get; set; }
 
         /// <summary>
@@ -18,6 +24,10 @@ public class PaymentIntentNextActionMultibancoDisplayDetails : StripeEntity<Paym
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpiresAt { get; set; }
 
         /// <summary>
@@ -25,12 +35,18 @@ public class PaymentIntentNextActionMultibancoDisplayDetails : StripeEntity<Paym
         /// Multibanco voucher.
         /// </summary>
         [JsonProperty("hosted_voucher_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hosted_voucher_url")]
+#endif
         public string HostedVoucherUrl { get; set; }
 
         /// <summary>
         /// Reference number associated with this Multibanco payment.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionOxxoDisplayDetails.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionOxxoDisplayDetails.cs
index 3d5e186e9a..1b7835dcc2 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionOxxoDisplayDetails.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionOxxoDisplayDetails.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionOxxoDisplayDetails : StripeEntity<PaymentIntentNextActionOxxoDisplayDetails>
     {
@@ -12,6 +15,10 @@ public class PaymentIntentNextActionOxxoDisplayDetails : StripeEntity<PaymentInt
         /// </summary>
         [JsonProperty("expires_after")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_after")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpiresAfter { get; set; }
 
         /// <summary>
@@ -19,12 +26,18 @@ public class PaymentIntentNextActionOxxoDisplayDetails : StripeEntity<PaymentInt
         /// OXXO voucher.
         /// </summary>
         [JsonProperty("hosted_voucher_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hosted_voucher_url")]
+#endif
         public string HostedVoucherUrl { get; set; }
 
         /// <summary>
         /// OXXO reference number.
         /// </summary>
         [JsonProperty("number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("number")]
+#endif
         public string Number { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionPaynowDisplayQrCode.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionPaynowDisplayQrCode.cs
index a30e594a36..218bd796ee 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionPaynowDisplayQrCode.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionPaynowDisplayQrCode.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionPaynowDisplayQrCode : StripeEntity<PaymentIntentNextActionPaynowDisplayQrCode>
     {
@@ -10,6 +13,9 @@ public class PaymentIntentNextActionPaynowDisplayQrCode : StripeEntity<PaymentIn
         /// library.
         /// </summary>
         [JsonProperty("data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("data")]
+#endif
         public string Data { get; set; }
 
         /// <summary>
@@ -17,18 +23,27 @@ public class PaymentIntentNextActionPaynowDisplayQrCode : StripeEntity<PaymentIn
         /// PayNow QR code.
         /// </summary>
         [JsonProperty("hosted_instructions_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hosted_instructions_url")]
+#endif
         public string HostedInstructionsUrl { get; set; }
 
         /// <summary>
         /// The image_url_png string used to render QR code.
         /// </summary>
         [JsonProperty("image_url_png")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("image_url_png")]
+#endif
         public string ImageUrlPng { get; set; }
 
         /// <summary>
         /// The image_url_svg string used to render QR code.
         /// </summary>
         [JsonProperty("image_url_svg")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("image_url_svg")]
+#endif
         public string ImageUrlSvg { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionPixDisplayQrCode.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionPixDisplayQrCode.cs
index 2485427d9b..8a5c5fd17b 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionPixDisplayQrCode.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionPixDisplayQrCode.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionPixDisplayQrCode : StripeEntity<PaymentIntentNextActionPixDisplayQrCode>
     {
@@ -12,6 +15,9 @@ public class PaymentIntentNextActionPixDisplayQrCode : StripeEntity<PaymentInten
         /// library.
         /// </summary>
         [JsonProperty("data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("data")]
+#endif
         public string Data { get; set; }
 
         /// <summary>
@@ -19,6 +25,10 @@ public class PaymentIntentNextActionPixDisplayQrCode : StripeEntity<PaymentInten
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime ExpiresAt { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -26,18 +36,27 @@ public class PaymentIntentNextActionPixDisplayQrCode : StripeEntity<PaymentInten
         /// code.
         /// </summary>
         [JsonProperty("hosted_instructions_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hosted_instructions_url")]
+#endif
         public string HostedInstructionsUrl { get; set; }
 
         /// <summary>
         /// The image_url_png string used to render png QR code.
         /// </summary>
         [JsonProperty("image_url_png")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("image_url_png")]
+#endif
         public string ImageUrlPng { get; set; }
 
         /// <summary>
         /// The image_url_svg string used to render svg QR code.
         /// </summary>
         [JsonProperty("image_url_svg")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("image_url_svg")]
+#endif
         public string ImageUrlSvg { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionPromptpayDisplayQrCode.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionPromptpayDisplayQrCode.cs
index 1d1fe6a07d..5dc015fec1 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionPromptpayDisplayQrCode.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionPromptpayDisplayQrCode.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionPromptpayDisplayQrCode : StripeEntity<PaymentIntentNextActionPromptpayDisplayQrCode>
     {
@@ -10,6 +13,9 @@ public class PaymentIntentNextActionPromptpayDisplayQrCode : StripeEntity<Paymen
         /// library.
         /// </summary>
         [JsonProperty("data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("data")]
+#endif
         public string Data { get; set; }
 
         /// <summary>
@@ -17,18 +23,27 @@ public class PaymentIntentNextActionPromptpayDisplayQrCode : StripeEntity<Paymen
         /// PromptPay QR code.
         /// </summary>
         [JsonProperty("hosted_instructions_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hosted_instructions_url")]
+#endif
         public string HostedInstructionsUrl { get; set; }
 
         /// <summary>
         /// The PNG path used to render the QR code, can be used as the source in an HTML img tag.
         /// </summary>
         [JsonProperty("image_url_png")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("image_url_png")]
+#endif
         public string ImageUrlPng { get; set; }
 
         /// <summary>
         /// The SVG path used to render the QR code, can be used as the source in an HTML img tag.
         /// </summary>
         [JsonProperty("image_url_svg")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("image_url_svg")]
+#endif
         public string ImageUrlSvg { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionRedirectToUrl.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionRedirectToUrl.cs
index 37a03a224e..66f96bd06c 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionRedirectToUrl.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionRedirectToUrl.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionRedirectToUrl : StripeEntity<PaymentIntentNextActionRedirectToUrl>
     {
@@ -10,12 +13,18 @@ public class PaymentIntentNextActionRedirectToUrl : StripeEntity<PaymentIntentNe
         /// redirected to this specified URL after completion.
         /// </summary>
         [JsonProperty("return_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_url")]
+#endif
         public string ReturnUrl { get; set; }
 
         /// <summary>
         /// The URL you must redirect your customer to in order to authenticate the payment.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionSwishHandleRedirectOrDisplayQrCode.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionSwishHandleRedirectOrDisplayQrCode.cs
index f7ab76d492..d67fc4e070 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionSwishHandleRedirectOrDisplayQrCode.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionSwishHandleRedirectOrDisplayQrCode.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionSwishHandleRedirectOrDisplayQrCode : StripeEntity<PaymentIntentNextActionSwishHandleRedirectOrDisplayQrCode>
     {
@@ -10,6 +13,9 @@ public class PaymentIntentNextActionSwishHandleRedirectOrDisplayQrCode : StripeE
         /// code.
         /// </summary>
         [JsonProperty("hosted_instructions_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hosted_instructions_url")]
+#endif
         public string HostedInstructionsUrl { get; set; }
 
         /// <summary>
@@ -17,9 +23,15 @@ public class PaymentIntentNextActionSwishHandleRedirectOrDisplayQrCode : StripeE
         /// available in standard API requests).
         /// </summary>
         [JsonProperty("mobile_auth_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mobile_auth_url")]
+#endif
         public string MobileAuthUrl { get; set; }
 
         [JsonProperty("qr_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("qr_code")]
+#endif
         public PaymentIntentNextActionSwishHandleRedirectOrDisplayQrCodeQrCode QrCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionSwishHandleRedirectOrDisplayQrCodeQrCode.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionSwishHandleRedirectOrDisplayQrCodeQrCode.cs
index 6b4913ec4a..ae0ef3aa23 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionSwishHandleRedirectOrDisplayQrCodeQrCode.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionSwishHandleRedirectOrDisplayQrCodeQrCode.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionSwishHandleRedirectOrDisplayQrCodeQrCode : StripeEntity<PaymentIntentNextActionSwishHandleRedirectOrDisplayQrCodeQrCode>
     {
@@ -10,18 +13,27 @@ public class PaymentIntentNextActionSwishHandleRedirectOrDisplayQrCodeQrCode : S
         /// library.
         /// </summary>
         [JsonProperty("data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("data")]
+#endif
         public string Data { get; set; }
 
         /// <summary>
         /// The image_url_png string used to render QR code.
         /// </summary>
         [JsonProperty("image_url_png")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("image_url_png")]
+#endif
         public string ImageUrlPng { get; set; }
 
         /// <summary>
         /// The image_url_svg string used to render QR code.
         /// </summary>
         [JsonProperty("image_url_svg")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("image_url_svg")]
+#endif
         public string ImageUrlSvg { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionVerifyWithMicrodeposits.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionVerifyWithMicrodeposits.cs
index 840e132312..a700bd6aa7 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionVerifyWithMicrodeposits.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionVerifyWithMicrodeposits.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionVerifyWithMicrodeposits : StripeEntity<PaymentIntentNextActionVerifyWithMicrodeposits>
     {
@@ -12,6 +15,10 @@ public class PaymentIntentNextActionVerifyWithMicrodeposits : StripeEntity<Payme
         /// </summary>
         [JsonProperty("arrival_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("arrival_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime ArrivalDate { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -19,6 +26,9 @@ public class PaymentIntentNextActionVerifyWithMicrodeposits : StripeEntity<Payme
         /// account.
         /// </summary>
         [JsonProperty("hosted_verification_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hosted_verification_url")]
+#endif
         public string HostedVerificationUrl { get; set; }
 
         /// <summary>
@@ -27,6 +37,9 @@ public class PaymentIntentNextActionVerifyWithMicrodeposits : StripeEntity<Payme
         /// One of: <c>amounts</c>, or <c>descriptor_code</c>.
         /// </summary>
         [JsonProperty("microdeposit_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("microdeposit_type")]
+#endif
         public string MicrodepositType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionWechatPayDisplayQrCode.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionWechatPayDisplayQrCode.cs
index 34b5eb0b5c..c9462a59f0 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionWechatPayDisplayQrCode.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionWechatPayDisplayQrCode.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionWechatPayDisplayQrCode : StripeEntity<PaymentIntentNextActionWechatPayDisplayQrCode>
     {
@@ -9,6 +12,9 @@ public class PaymentIntentNextActionWechatPayDisplayQrCode : StripeEntity<Paymen
         /// The data being used to generate QR code.
         /// </summary>
         [JsonProperty("data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("data")]
+#endif
         public string Data { get; set; }
 
         /// <summary>
@@ -16,24 +22,36 @@ public class PaymentIntentNextActionWechatPayDisplayQrCode : StripeEntity<Paymen
         /// WeChat Pay QR code.
         /// </summary>
         [JsonProperty("hosted_instructions_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hosted_instructions_url")]
+#endif
         public string HostedInstructionsUrl { get; set; }
 
         /// <summary>
         /// The base64 image data for a pre-generated QR code.
         /// </summary>
         [JsonProperty("image_data_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("image_data_url")]
+#endif
         public string ImageDataUrl { get; set; }
 
         /// <summary>
         /// The image_url_png string used to render QR code.
         /// </summary>
         [JsonProperty("image_url_png")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("image_url_png")]
+#endif
         public string ImageUrlPng { get; set; }
 
         /// <summary>
         /// The image_url_svg string used to render QR code.
         /// </summary>
         [JsonProperty("image_url_svg")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("image_url_svg")]
+#endif
         public string ImageUrlSvg { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionWechatPayRedirectToAndroidApp.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionWechatPayRedirectToAndroidApp.cs
index 79b9697d7c..96a864edde 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionWechatPayRedirectToAndroidApp.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionWechatPayRedirectToAndroidApp.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionWechatPayRedirectToAndroidApp : StripeEntity<PaymentIntentNextActionWechatPayRedirectToAndroidApp>
     {
@@ -9,42 +12,63 @@ public class PaymentIntentNextActionWechatPayRedirectToAndroidApp : StripeEntity
         /// app_id is the APP ID registered on WeChat open platform.
         /// </summary>
         [JsonProperty("app_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("app_id")]
+#endif
         public string AppId { get; set; }
 
         /// <summary>
         /// nonce_str is a random string.
         /// </summary>
         [JsonProperty("nonce_str")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("nonce_str")]
+#endif
         public string NonceStr { get; set; }
 
         /// <summary>
         /// package is static value.
         /// </summary>
         [JsonProperty("package")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("package")]
+#endif
         public string Package { get; set; }
 
         /// <summary>
         /// an unique merchant ID assigned by WeChat Pay.
         /// </summary>
         [JsonProperty("partner_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("partner_id")]
+#endif
         public string PartnerId { get; set; }
 
         /// <summary>
         /// an unique trading ID assigned by WeChat Pay.
         /// </summary>
         [JsonProperty("prepay_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("prepay_id")]
+#endif
         public string PrepayId { get; set; }
 
         /// <summary>
         /// A signature.
         /// </summary>
         [JsonProperty("sign")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sign")]
+#endif
         public string Sign { get; set; }
 
         /// <summary>
         /// Specifies the current time in epoch format.
         /// </summary>
         [JsonProperty("timestamp")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("timestamp")]
+#endif
         public string Timestamp { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionWechatPayRedirectToIosApp.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionWechatPayRedirectToIosApp.cs
index 9d9646d9ab..d80371504d 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionWechatPayRedirectToIosApp.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentNextActionWechatPayRedirectToIosApp.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentNextActionWechatPayRedirectToIosApp : StripeEntity<PaymentIntentNextActionWechatPayRedirectToIosApp>
     {
@@ -9,6 +12,9 @@ public class PaymentIntentNextActionWechatPayRedirectToIosApp : StripeEntity<Pay
         /// An universal link that redirect to WeChat Pay app.
         /// </summary>
         [JsonProperty("native_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("native_url")]
+#endif
         public string NativeUrl { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodConfigurationDetails.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodConfigurationDetails.cs
index 643941f98e..43d5e7c80b 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodConfigurationDetails.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodConfigurationDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodConfigurationDetails : StripeEntity<PaymentIntentPaymentMethodConfigurationDetails>, IHasId
     {
@@ -9,12 +12,18 @@ public class PaymentIntentPaymentMethodConfigurationDetails : StripeEntity<Payme
         /// ID of the payment method configuration used.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// ID of the parent payment method configuration used.
         /// </summary>
         [JsonProperty("parent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("parent")]
+#endif
         public string Parent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptions.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptions.cs
index 780cb65d63..5a33b3d357 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptions.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptions.cs
@@ -2,145 +2,286 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptions : StripeEntity<PaymentIntentPaymentMethodOptions>
     {
         [JsonProperty("acss_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acss_debit")]
+#endif
         public PaymentIntentPaymentMethodOptionsAcssDebit AcssDebit { get; set; }
 
         [JsonProperty("affirm")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("affirm")]
+#endif
         public PaymentIntentPaymentMethodOptionsAffirm Affirm { get; set; }
 
         [JsonProperty("afterpay_clearpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("afterpay_clearpay")]
+#endif
         public PaymentIntentPaymentMethodOptionsAfterpayClearpay AfterpayClearpay { get; set; }
 
         [JsonProperty("alipay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alipay")]
+#endif
         public PaymentIntentPaymentMethodOptionsAlipay Alipay { get; set; }
 
         [JsonProperty("alma")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alma")]
+#endif
         public PaymentIntentPaymentMethodOptionsAlma Alma { get; set; }
 
         [JsonProperty("amazon_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amazon_pay")]
+#endif
         public PaymentIntentPaymentMethodOptionsAmazonPay AmazonPay { get; set; }
 
         [JsonProperty("au_becs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("au_becs_debit")]
+#endif
         public PaymentIntentPaymentMethodOptionsAuBecsDebit AuBecsDebit { get; set; }
 
         [JsonProperty("bacs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bacs_debit")]
+#endif
         public PaymentIntentPaymentMethodOptionsBacsDebit BacsDebit { get; set; }
 
         [JsonProperty("bancontact")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bancontact")]
+#endif
         public PaymentIntentPaymentMethodOptionsBancontact Bancontact { get; set; }
 
         [JsonProperty("blik")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("blik")]
+#endif
         public PaymentIntentPaymentMethodOptionsBlik Blik { get; set; }
 
         [JsonProperty("boleto")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("boleto")]
+#endif
         public PaymentIntentPaymentMethodOptionsBoleto Boleto { get; set; }
 
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public PaymentIntentPaymentMethodOptionsCard Card { get; set; }
 
         [JsonProperty("card_present")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_present")]
+#endif
         public PaymentIntentPaymentMethodOptionsCardPresent CardPresent { get; set; }
 
         [JsonProperty("cashapp")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cashapp")]
+#endif
         public PaymentIntentPaymentMethodOptionsCashapp Cashapp { get; set; }
 
         [JsonProperty("customer_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_balance")]
+#endif
         public PaymentIntentPaymentMethodOptionsCustomerBalance CustomerBalance { get; set; }
 
         [JsonProperty("eps")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eps")]
+#endif
         public PaymentIntentPaymentMethodOptionsEps Eps { get; set; }
 
         [JsonProperty("fpx")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fpx")]
+#endif
         public PaymentIntentPaymentMethodOptionsFpx Fpx { get; set; }
 
         [JsonProperty("giropay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("giropay")]
+#endif
         public PaymentIntentPaymentMethodOptionsGiropay Giropay { get; set; }
 
         [JsonProperty("grabpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("grabpay")]
+#endif
         public PaymentIntentPaymentMethodOptionsGrabpay Grabpay { get; set; }
 
         [JsonProperty("ideal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ideal")]
+#endif
         public PaymentIntentPaymentMethodOptionsIdeal Ideal { get; set; }
 
         [JsonProperty("interac_present")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interac_present")]
+#endif
         public PaymentIntentPaymentMethodOptionsInteracPresent InteracPresent { get; set; }
 
         [JsonProperty("kakao_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kakao_pay")]
+#endif
         public PaymentIntentPaymentMethodOptionsKakaoPay KakaoPay { get; set; }
 
         [JsonProperty("klarna")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("klarna")]
+#endif
         public PaymentIntentPaymentMethodOptionsKlarna Klarna { get; set; }
 
         [JsonProperty("konbini")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("konbini")]
+#endif
         public PaymentIntentPaymentMethodOptionsKonbini Konbini { get; set; }
 
         [JsonProperty("kr_card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kr_card")]
+#endif
         public PaymentIntentPaymentMethodOptionsKrCard KrCard { get; set; }
 
         [JsonProperty("link")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("link")]
+#endif
         public PaymentIntentPaymentMethodOptionsLink Link { get; set; }
 
         [JsonProperty("mobilepay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mobilepay")]
+#endif
         public PaymentIntentPaymentMethodOptionsMobilepay Mobilepay { get; set; }
 
         [JsonProperty("multibanco")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("multibanco")]
+#endif
         public PaymentIntentPaymentMethodOptionsMultibanco Multibanco { get; set; }
 
         [JsonProperty("naver_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("naver_pay")]
+#endif
         public PaymentIntentPaymentMethodOptionsNaverPay NaverPay { get; set; }
 
         [JsonProperty("oxxo")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("oxxo")]
+#endif
         public PaymentIntentPaymentMethodOptionsOxxo Oxxo { get; set; }
 
         [JsonProperty("p24")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("p24")]
+#endif
         public PaymentIntentPaymentMethodOptionsP24 P24 { get; set; }
 
         [JsonProperty("pay_by_bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_by_bank")]
+#endif
         public PaymentIntentPaymentMethodOptionsPayByBank PayByBank { get; set; }
 
         [JsonProperty("payco")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payco")]
+#endif
         public PaymentIntentPaymentMethodOptionsPayco Payco { get; set; }
 
         [JsonProperty("paynow")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paynow")]
+#endif
         public PaymentIntentPaymentMethodOptionsPaynow Paynow { get; set; }
 
         [JsonProperty("paypal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paypal")]
+#endif
         public PaymentIntentPaymentMethodOptionsPaypal Paypal { get; set; }
 
         [JsonProperty("pix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pix")]
+#endif
         public PaymentIntentPaymentMethodOptionsPix Pix { get; set; }
 
         [JsonProperty("promptpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promptpay")]
+#endif
         public PaymentIntentPaymentMethodOptionsPromptpay Promptpay { get; set; }
 
         [JsonProperty("revolut_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("revolut_pay")]
+#endif
         public PaymentIntentPaymentMethodOptionsRevolutPay RevolutPay { get; set; }
 
         [JsonProperty("samsung_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("samsung_pay")]
+#endif
         public PaymentIntentPaymentMethodOptionsSamsungPay SamsungPay { get; set; }
 
         [JsonProperty("sepa_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_debit")]
+#endif
         public PaymentIntentPaymentMethodOptionsSepaDebit SepaDebit { get; set; }
 
         [JsonProperty("sofort")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sofort")]
+#endif
         public PaymentIntentPaymentMethodOptionsSofort Sofort { get; set; }
 
         [JsonProperty("swish")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("swish")]
+#endif
         public PaymentIntentPaymentMethodOptionsSwish Swish { get; set; }
 
         [JsonProperty("twint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("twint")]
+#endif
         public PaymentIntentPaymentMethodOptionsTwint Twint { get; set; }
 
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public PaymentIntentPaymentMethodOptionsUsBankAccount UsBankAccount { get; set; }
 
         [JsonProperty("wechat_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wechat_pay")]
+#endif
         public PaymentIntentPaymentMethodOptionsWechatPay WechatPay { get; set; }
 
         [JsonProperty("zip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("zip")]
+#endif
         public PaymentIntentPaymentMethodOptionsZip Zip { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAcssDebit.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAcssDebit.cs
index ceb6539fc9..f60f6eb12f 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAcssDebit.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAcssDebit.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsAcssDebit : StripeEntity<PaymentIntentPaymentMethodOptionsAcssDebit>
     {
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public PaymentIntentPaymentMethodOptionsAcssDebitMandateOptions MandateOptions { get; set; }
 
         /// <summary>
@@ -30,6 +36,9 @@ public class PaymentIntentPaymentMethodOptionsAcssDebit : StripeEntity<PaymentIn
         /// One of: <c>none</c>, <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
@@ -38,6 +47,9 @@ public class PaymentIntentPaymentMethodOptionsAcssDebit : StripeEntity<PaymentIn
         /// and 15 calendar days from now.
         /// </summary>
         [JsonProperty("target_date")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("target_date")]
+#endif
         public string TargetDate { get; set; }
 
         /// <summary>
@@ -45,6 +57,9 @@ public class PaymentIntentPaymentMethodOptionsAcssDebit : StripeEntity<PaymentIn
         /// One of: <c>automatic</c>, <c>instant</c>, or <c>microdeposits</c>.
         /// </summary>
         [JsonProperty("verification_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification_method")]
+#endif
         public string VerificationMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAcssDebitMandateOptions.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAcssDebitMandateOptions.cs
index 585d1d9213..eac840c40a 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAcssDebitMandateOptions.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAcssDebitMandateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsAcssDebitMandateOptions : StripeEntity<PaymentIntentPaymentMethodOptionsAcssDebitMandateOptions>
     {
@@ -9,6 +12,9 @@ public class PaymentIntentPaymentMethodOptionsAcssDebitMandateOptions : StripeEn
         /// A URL for custom mandate text.
         /// </summary>
         [JsonProperty("custom_mandate_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_mandate_url")]
+#endif
         public string CustomMandateUrl { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class PaymentIntentPaymentMethodOptionsAcssDebitMandateOptions : StripeEn
         /// 'interval' or 'combined'.
         /// </summary>
         [JsonProperty("interval_description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_description")]
+#endif
         public string IntervalDescription { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class PaymentIntentPaymentMethodOptionsAcssDebitMandateOptions : StripeEn
         /// One of: <c>combined</c>, <c>interval</c>, or <c>sporadic</c>.
         /// </summary>
         [JsonProperty("payment_schedule")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_schedule")]
+#endif
         public string PaymentSchedule { get; set; }
 
         /// <summary>
@@ -30,6 +42,9 @@ public class PaymentIntentPaymentMethodOptionsAcssDebitMandateOptions : StripeEn
         /// One of: <c>business</c>, or <c>personal</c>.
         /// </summary>
         [JsonProperty("transaction_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_type")]
+#endif
         public string TransactionType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAffirm.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAffirm.cs
index 845cce12e2..6979e6803c 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAffirm.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAffirm.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsAffirm : StripeEntity<PaymentIntentPaymentMethodOptionsAffirm>
     {
@@ -9,12 +12,18 @@ public class PaymentIntentPaymentMethodOptionsAffirm : StripeEntity<PaymentInten
         /// Controls when the funds will be captured from the customer's account.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
         /// Preferred language of the Affirm authorization page that the customer is redirected to.
         /// </summary>
         [JsonProperty("preferred_locale")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_locale")]
+#endif
         public string PreferredLocale { get; set; }
 
         /// <summary>
@@ -38,6 +47,9 @@ public class PaymentIntentPaymentMethodOptionsAffirm : StripeEntity<PaymentInten
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAfterpayClearpay.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAfterpayClearpay.cs
index 7d54c84c17..3d6cec1cea 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAfterpayClearpay.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAfterpayClearpay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsAfterpayClearpay : StripeEntity<PaymentIntentPaymentMethodOptionsAfterpayClearpay>
     {
@@ -9,6 +12,9 @@ public class PaymentIntentPaymentMethodOptionsAfterpayClearpay : StripeEntity<Pa
         /// Controls when the funds will be captured from the customer's account.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentIntentPaymentMethodOptionsAfterpayClearpay : StripeEntity<Pa
         /// backslashes, and dashes. This field differs from the statement descriptor and item name.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
@@ -40,6 +49,9 @@ public class PaymentIntentPaymentMethodOptionsAfterpayClearpay : StripeEntity<Pa
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAlipay.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAlipay.cs
index d0873e7f8d..6148e5eb68 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAlipay.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAlipay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsAlipay : StripeEntity<PaymentIntentPaymentMethodOptionsAlipay>
     {
@@ -27,6 +30,9 @@ public class PaymentIntentPaymentMethodOptionsAlipay : StripeEntity<PaymentInten
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAlma.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAlma.cs
index 926e793941..645a9e0f99 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAlma.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAlma.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsAlma : StripeEntity<PaymentIntentPaymentMethodOptionsAlma>
     {
@@ -9,6 +12,9 @@ public class PaymentIntentPaymentMethodOptionsAlma : StripeEntity<PaymentIntentP
         /// Controls when the funds will be captured from the customer's account.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAmazonPay.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAmazonPay.cs
index b302aeb174..ad1df7b523 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAmazonPay.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAmazonPay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsAmazonPay : StripeEntity<PaymentIntentPaymentMethodOptionsAmazonPay>
     {
@@ -9,6 +12,9 @@ public class PaymentIntentPaymentMethodOptionsAmazonPay : StripeEntity<PaymentIn
         /// Controls when the funds will be captured from the customer's account.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
@@ -33,6 +39,9 @@ public class PaymentIntentPaymentMethodOptionsAmazonPay : StripeEntity<PaymentIn
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAuBecsDebit.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAuBecsDebit.cs
index aa5c65953b..6863294bd8 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAuBecsDebit.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsAuBecsDebit.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsAuBecsDebit : StripeEntity<PaymentIntentPaymentMethodOptionsAuBecsDebit>
     {
@@ -27,6 +30,9 @@ public class PaymentIntentPaymentMethodOptionsAuBecsDebit : StripeEntity<Payment
         /// One of: <c>none</c>, <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
@@ -35,6 +41,9 @@ public class PaymentIntentPaymentMethodOptionsAuBecsDebit : StripeEntity<Payment
         /// and 15 calendar days from now.
         /// </summary>
         [JsonProperty("target_date")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("target_date")]
+#endif
         public string TargetDate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsBacsDebit.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsBacsDebit.cs
index cf48b033de..0249af4fc1 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsBacsDebit.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsBacsDebit.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsBacsDebit : StripeEntity<PaymentIntentPaymentMethodOptionsBacsDebit>
     {
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public PaymentIntentPaymentMethodOptionsBacsDebitMandateOptions MandateOptions { get; set; }
 
         /// <summary>
@@ -30,6 +36,9 @@ public class PaymentIntentPaymentMethodOptionsBacsDebit : StripeEntity<PaymentIn
         /// One of: <c>none</c>, <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
@@ -38,6 +47,9 @@ public class PaymentIntentPaymentMethodOptionsBacsDebit : StripeEntity<PaymentIn
         /// and 15 calendar days from now.
         /// </summary>
         [JsonProperty("target_date")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("target_date")]
+#endif
         public string TargetDate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsBacsDebitMandateOptions.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsBacsDebitMandateOptions.cs
index be8667f6f5..717131ef83 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsBacsDebitMandateOptions.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsBacsDebitMandateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsBacsDebitMandateOptions : StripeEntity<PaymentIntentPaymentMethodOptionsBacsDebitMandateOptions>
     {
@@ -11,6 +14,9 @@ public class PaymentIntentPaymentMethodOptionsBacsDebitMandateOptions : StripeEn
         /// '/', '_', '-', '&amp;', '.'. Cannot begin with 'DDIC' or 'STRIPE'.
         /// </summary>
         [JsonProperty("reference_prefix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference_prefix")]
+#endif
         public string ReferencePrefix { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsBancontact.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsBancontact.cs
index 082190631a..e33924053c 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsBancontact.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsBancontact.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsBancontact : StripeEntity<PaymentIntentPaymentMethodOptionsBancontact>
     {
@@ -11,6 +14,9 @@ public class PaymentIntentPaymentMethodOptionsBancontact : StripeEntity<PaymentI
         /// One of: <c>de</c>, <c>en</c>, <c>fr</c>, or <c>nl</c>.
         /// </summary>
         [JsonProperty("preferred_language")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_language")]
+#endif
         public string PreferredLanguage { get; set; }
 
         /// <summary>
@@ -35,6 +41,9 @@ public class PaymentIntentPaymentMethodOptionsBancontact : StripeEntity<PaymentI
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsBlik.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsBlik.cs
index aec18b109c..33a68a9981 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsBlik.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsBlik.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsBlik : StripeEntity<PaymentIntentPaymentMethodOptionsBlik>
     {
@@ -26,6 +29,9 @@ public class PaymentIntentPaymentMethodOptionsBlik : StripeEntity<PaymentIntentP
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsBoleto.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsBoleto.cs
index 451a7a59ae..82d385b5fc 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsBoleto.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsBoleto.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsBoleto : StripeEntity<PaymentIntentPaymentMethodOptionsBoleto>
     {
@@ -11,6 +14,9 @@ public class PaymentIntentPaymentMethodOptionsBoleto : StripeEntity<PaymentInten
         /// expire on Wednesday at 23:59 America/Sao_Paulo time.
         /// </summary>
         [JsonProperty("expires_after_days")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_after_days")]
+#endif
         public long ExpiresAfterDays { get; set; }
 
         /// <summary>
@@ -35,6 +41,9 @@ public class PaymentIntentPaymentMethodOptionsBoleto : StripeEntity<PaymentInten
         /// One of: <c>none</c>, <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCard.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCard.cs
index 61350f320f..e01a76cc8a 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCard.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCard.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsCard : StripeEntity<PaymentIntentPaymentMethodOptionsCard>
     {
@@ -9,6 +12,9 @@ public class PaymentIntentPaymentMethodOptionsCard : StripeEntity<PaymentIntentP
         /// Controls when the funds will be captured from the customer's account.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
@@ -18,12 +24,18 @@ public class PaymentIntentPaymentMethodOptionsCard : StripeEntity<PaymentIntentP
         /// href="https://stripe.com/docs/payments/installments">installments integration guide</a>.
         /// </summary>
         [JsonProperty("installments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("installments")]
+#endif
         public PaymentIntentPaymentMethodOptionsCardInstallments Installments { get; set; }
 
         /// <summary>
         /// Configuration options for setting up an eMandate for cards issued in India.
         /// </summary>
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public PaymentIntentPaymentMethodOptionsCardMandateOptions MandateOptions { get; set; }
 
         /// <summary>
@@ -34,6 +46,9 @@ public class PaymentIntentPaymentMethodOptionsCard : StripeEntity<PaymentIntentP
         /// <c>mastercard</c>, <c>unionpay</c>, <c>unknown</c>, or <c>visa</c>.
         /// </summary>
         [JsonProperty("network")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network")]
+#endif
         public string Network { get; set; }
 
         /// <summary>
@@ -43,6 +58,9 @@ public class PaymentIntentPaymentMethodOptionsCard : StripeEntity<PaymentIntentP
         /// One of: <c>if_available</c>, or <c>never</c>.
         /// </summary>
         [JsonProperty("request_extended_authorization")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_extended_authorization")]
+#endif
         public string RequestExtendedAuthorization { get; set; }
 
         /// <summary>
@@ -52,6 +70,9 @@ public class PaymentIntentPaymentMethodOptionsCard : StripeEntity<PaymentIntentP
         /// One of: <c>if_available</c>, or <c>never</c>.
         /// </summary>
         [JsonProperty("request_incremental_authorization")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_incremental_authorization")]
+#endif
         public string RequestIncrementalAuthorization { get; set; }
 
         /// <summary>
@@ -60,6 +81,9 @@ public class PaymentIntentPaymentMethodOptionsCard : StripeEntity<PaymentIntentP
         /// One of: <c>if_available</c>, or <c>never</c>.
         /// </summary>
         [JsonProperty("request_multicapture")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_multicapture")]
+#endif
         public string RequestMulticapture { get; set; }
 
         /// <summary>
@@ -69,6 +93,9 @@ public class PaymentIntentPaymentMethodOptionsCard : StripeEntity<PaymentIntentP
         /// One of: <c>if_available</c>, or <c>never</c>.
         /// </summary>
         [JsonProperty("request_overcapture")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_overcapture")]
+#endif
         public string RequestOvercapture { get; set; }
 
         /// <summary>
@@ -84,6 +111,9 @@ public class PaymentIntentPaymentMethodOptionsCard : StripeEntity<PaymentIntentP
         /// One of: <c>any</c>, <c>automatic</c>, or <c>challenge</c>.
         /// </summary>
         [JsonProperty("request_three_d_secure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_three_d_secure")]
+#endif
         public string RequestThreeDSecure { get; set; }
 
         /// <summary>
@@ -91,6 +121,9 @@ public class PaymentIntentPaymentMethodOptionsCard : StripeEntity<PaymentIntentP
         /// provided again (i.e. using the cvc_token parameter).
         /// </summary>
         [JsonProperty("require_cvc_recollection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("require_cvc_recollection")]
+#endif
         public bool RequireCvcRecollection { get; set; }
 
         /// <summary>
@@ -115,6 +148,9 @@ public class PaymentIntentPaymentMethodOptionsCard : StripeEntity<PaymentIntentP
         /// One of: <c>none</c>, <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
@@ -125,6 +161,9 @@ public class PaymentIntentPaymentMethodOptionsCard : StripeEntity<PaymentIntentP
         /// (including separators) will appear truncated to 22 characters.
         /// </summary>
         [JsonProperty("statement_descriptor_suffix_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_suffix_kana")]
+#endif
         public string StatementDescriptorSuffixKana { get; set; }
 
         /// <summary>
@@ -135,6 +174,9 @@ public class PaymentIntentPaymentMethodOptionsCard : StripeEntity<PaymentIntentP
         /// (including separators) will appear truncated to 17 characters.
         /// </summary>
         [JsonProperty("statement_descriptor_suffix_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_suffix_kanji")]
+#endif
         public string StatementDescriptorSuffixKanji { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCardInstallments.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCardInstallments.cs
index 53f04dc5da..3d6c4f99ff 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCardInstallments.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCardInstallments.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsCardInstallments : StripeEntity<PaymentIntentPaymentMethodOptionsCardInstallments>
     {
@@ -10,18 +13,27 @@ public class PaymentIntentPaymentMethodOptionsCardInstallments : StripeEntity<Pa
         /// Installment plans that may be selected for this PaymentIntent.
         /// </summary>
         [JsonProperty("available_plans")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available_plans")]
+#endif
         public List<PaymentIntentPaymentMethodOptionsCardInstallmentsPlan> AvailablePlans { get; set; }
 
         /// <summary>
         /// Whether Installments are enabled for this PaymentIntent.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         /// <summary>
         /// Installment plan selected for this PaymentIntent.
         /// </summary>
         [JsonProperty("plan")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("plan")]
+#endif
         public PaymentIntentPaymentMethodOptionsCardInstallmentsPlan Plan { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCardInstallmentsPlan.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCardInstallmentsPlan.cs
index 852e8d202b..de3110f078 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCardInstallmentsPlan.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCardInstallmentsPlan.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsCardInstallmentsPlan : StripeEntity<PaymentIntentPaymentMethodOptionsCardInstallmentsPlan>
     {
@@ -10,6 +13,9 @@ public class PaymentIntentPaymentMethodOptionsCardInstallmentsPlan : StripeEntit
         /// your customer will make to their credit card.
         /// </summary>
         [JsonProperty("count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("count")]
+#endif
         public long? Count { get; set; }
 
         /// <summary>
@@ -17,12 +23,18 @@ public class PaymentIntentPaymentMethodOptionsCardInstallmentsPlan : StripeEntit
         /// payments your customer will make to their credit card. One of <c>month</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
 
         /// <summary>
         /// Type of installment plan, one of <c>fixed_count</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCardMandateOptions.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCardMandateOptions.cs
index effa74b2f2..b07ca03e66 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCardMandateOptions.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCardMandateOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsCardMandateOptions : StripeEntity<PaymentIntentPaymentMethodOptionsCardMandateOptions>
     {
@@ -12,6 +15,9 @@ public class PaymentIntentPaymentMethodOptionsCardMandateOptions : StripeEntity<
         /// Amount to be charged for future payments.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class PaymentIntentPaymentMethodOptionsCardMandateOptions : StripeEntity<
         /// One of: <c>fixed</c>, or <c>maximum</c>.
         /// </summary>
         [JsonProperty("amount_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_type")]
+#endif
         public string AmountType { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class PaymentIntentPaymentMethodOptionsCardMandateOptions : StripeEntity<
         /// customer.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -36,6 +48,10 @@ public class PaymentIntentPaymentMethodOptionsCardMandateOptions : StripeEntity<
         /// </summary>
         [JsonProperty("end_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? EndDate { get; set; }
 
         /// <summary>
@@ -44,6 +60,9 @@ public class PaymentIntentPaymentMethodOptionsCardMandateOptions : StripeEntity<
         /// One of: <c>day</c>, <c>month</c>, <c>sporadic</c>, <c>week</c>, or <c>year</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
 
         /// <summary>
@@ -53,12 +72,18 @@ public class PaymentIntentPaymentMethodOptionsCardMandateOptions : StripeEntity<
         /// <c>interval=sporadic</c>.
         /// </summary>
         [JsonProperty("interval_count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_count")]
+#endif
         public long? IntervalCount { get; set; }
 
         /// <summary>
         /// Unique identifier for the mandate or subscription.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
@@ -67,12 +92,19 @@ public class PaymentIntentPaymentMethodOptionsCardMandateOptions : StripeEntity<
         /// </summary>
         [JsonProperty("start_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("start_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime StartDate { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// Specifies the type of mandates supported. Possible values are <c>india</c>.
         /// </summary>
         [JsonProperty("supported_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("supported_types")]
+#endif
         public List<string> SupportedTypes { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCardPresent.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCardPresent.cs
index 3ea1aa171f..9b2e8a7856 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCardPresent.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCardPresent.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsCardPresent : StripeEntity<PaymentIntentPaymentMethodOptionsCardPresent>
     {
@@ -11,6 +14,9 @@ public class PaymentIntentPaymentMethodOptionsCardPresent : StripeEntity<Payment
         /// validity window</a>.
         /// </summary>
         [JsonProperty("request_extended_authorization")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_extended_authorization")]
+#endif
         public bool? RequestExtendedAuthorization { get; set; }
 
         /// <summary>
@@ -22,9 +28,15 @@ public class PaymentIntentPaymentMethodOptionsCardPresent : StripeEntity<Payment
         /// response to verify support.
         /// </summary>
         [JsonProperty("request_incremental_authorization_support")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_incremental_authorization_support")]
+#endif
         public bool? RequestIncrementalAuthorizationSupport { get; set; }
 
         [JsonProperty("routing")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing")]
+#endif
         public PaymentIntentPaymentMethodOptionsCardPresentRouting Routing { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCardPresentRouting.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCardPresentRouting.cs
index d17acb5c8c..71ed112e7e 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCardPresentRouting.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCardPresentRouting.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsCardPresentRouting : StripeEntity<PaymentIntentPaymentMethodOptionsCardPresentRouting>
     {
@@ -10,6 +13,9 @@ public class PaymentIntentPaymentMethodOptionsCardPresentRouting : StripeEntity<
         /// One of: <c>domestic</c>, or <c>international</c>.
         /// </summary>
         [JsonProperty("requested_priority")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested_priority")]
+#endif
         public string RequestedPriority { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCashapp.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCashapp.cs
index 9f8dfa2d90..07f79a3338 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCashapp.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCashapp.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsCashapp : StripeEntity<PaymentIntentPaymentMethodOptionsCashapp>
     {
@@ -9,6 +12,9 @@ public class PaymentIntentPaymentMethodOptionsCashapp : StripeEntity<PaymentInte
         /// Controls when the funds will be captured from the customer's account.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
@@ -33,6 +39,9 @@ public class PaymentIntentPaymentMethodOptionsCashapp : StripeEntity<PaymentInte
         /// One of: <c>none</c>, <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCustomerBalance.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCustomerBalance.cs
index 2c6a157fbd..555901072a 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCustomerBalance.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCustomerBalance.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsCustomerBalance : StripeEntity<PaymentIntentPaymentMethodOptionsCustomerBalance>
     {
         [JsonProperty("bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_transfer")]
+#endif
         public PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransfer BankTransfer { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class PaymentIntentPaymentMethodOptionsCustomerBalance : StripeEntity<Pay
         /// balance. Permitted values include: <c>bank_transfer</c>.
         /// </summary>
         [JsonProperty("funding_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding_type")]
+#endif
         public string FundingType { get; set; }
 
         /// <summary>
@@ -36,6 +45,9 @@ public class PaymentIntentPaymentMethodOptionsCustomerBalance : StripeEntity<Pay
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransfer.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransfer.cs
index aebb972ce0..38c8085ce4 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransfer.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransfer.cs
@@ -3,10 +3,16 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransfer : StripeEntity<PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransfer>
     {
         [JsonProperty("eu_bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eu_bank_transfer")]
+#endif
         public PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfer EuBankTransfer { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransfer : Stri
         /// <c>swift</c>, or <c>zengin</c>.
         /// </summary>
         [JsonProperty("requested_address_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested_address_types")]
+#endif
         public List<string> RequestedAddressTypes { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransfer : Stri
         /// <c>mx_bank_transfer</c>, or <c>us_bank_transfer</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfer.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfer.cs
index 45d2b53080..99c36c9f93 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfer.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfer.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfer : StripeEntity<PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfer>
     {
@@ -11,6 +14,9 @@ public class PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransferEuBankT
         /// One of: <c>BE</c>, <c>DE</c>, <c>ES</c>, <c>FR</c>, <c>IE</c>, or <c>NL</c>.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsEps.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsEps.cs
index e68ea4787e..9160ac4b54 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsEps.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsEps.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsEps : StripeEntity<PaymentIntentPaymentMethodOptionsEps>
     {
@@ -26,6 +29,9 @@ public class PaymentIntentPaymentMethodOptionsEps : StripeEntity<PaymentIntentPa
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsFpx.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsFpx.cs
index ee7f0a4e39..c86399d0ad 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsFpx.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsFpx.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsFpx : StripeEntity<PaymentIntentPaymentMethodOptionsFpx>
     {
@@ -26,6 +29,9 @@ public class PaymentIntentPaymentMethodOptionsFpx : StripeEntity<PaymentIntentPa
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsGiropay.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsGiropay.cs
index 2cb5c75bd4..2f5ac2a730 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsGiropay.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsGiropay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsGiropay : StripeEntity<PaymentIntentPaymentMethodOptionsGiropay>
     {
@@ -26,6 +29,9 @@ public class PaymentIntentPaymentMethodOptionsGiropay : StripeEntity<PaymentInte
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsGrabpay.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsGrabpay.cs
index b7ef9626f4..0585d07254 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsGrabpay.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsGrabpay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsGrabpay : StripeEntity<PaymentIntentPaymentMethodOptionsGrabpay>
     {
@@ -26,6 +29,9 @@ public class PaymentIntentPaymentMethodOptionsGrabpay : StripeEntity<PaymentInte
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsIdeal.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsIdeal.cs
index 10851f2806..c30a8dbc28 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsIdeal.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsIdeal.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsIdeal : StripeEntity<PaymentIntentPaymentMethodOptionsIdeal>
     {
@@ -27,6 +30,9 @@ public class PaymentIntentPaymentMethodOptionsIdeal : StripeEntity<PaymentIntent
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsKakaoPay.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsKakaoPay.cs
index 2000e9e9fe..7e7263b622 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsKakaoPay.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsKakaoPay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsKakaoPay : StripeEntity<PaymentIntentPaymentMethodOptionsKakaoPay>
     {
@@ -9,6 +12,9 @@ public class PaymentIntentPaymentMethodOptionsKakaoPay : StripeEntity<PaymentInt
         /// Controls when the funds will be captured from the customer's account.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
@@ -33,6 +39,9 @@ public class PaymentIntentPaymentMethodOptionsKakaoPay : StripeEntity<PaymentInt
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsKlarna.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsKlarna.cs
index 835fd13676..ddf6088eb2 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsKlarna.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsKlarna.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsKlarna : StripeEntity<PaymentIntentPaymentMethodOptionsKlarna>
     {
@@ -9,12 +12,18 @@ public class PaymentIntentPaymentMethodOptionsKlarna : StripeEntity<PaymentInten
         /// Controls when the funds will be captured from the customer's account.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
         /// Preferred locale of the Klarna checkout page that the customer is redirected to.
         /// </summary>
         [JsonProperty("preferred_locale")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_locale")]
+#endif
         public string PreferredLocale { get; set; }
 
         /// <summary>
@@ -38,6 +47,9 @@ public class PaymentIntentPaymentMethodOptionsKlarna : StripeEntity<PaymentInten
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsKonbini.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsKonbini.cs
index 077df77ed6..6197abf63d 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsKonbini.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsKonbini.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsKonbini : StripeEntity<PaymentIntentPaymentMethodOptionsKonbini>
     {
@@ -12,6 +15,9 @@ public class PaymentIntentPaymentMethodOptionsKonbini : StripeEntity<PaymentInte
         /// applicable convenience stores.
         /// </summary>
         [JsonProperty("confirmation_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("confirmation_number")]
+#endif
         public string ConfirmationNumber { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class PaymentIntentPaymentMethodOptionsKonbini : StripeEntity<PaymentInte
         /// Wednesday 23:59:59 JST.
         /// </summary>
         [JsonProperty("expires_after_days")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_after_days")]
+#endif
         public long? ExpiresAfterDays { get; set; }
 
         /// <summary>
@@ -29,6 +38,10 @@ public class PaymentIntentPaymentMethodOptionsKonbini : StripeEntity<PaymentInte
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpiresAt { get; set; }
 
         /// <summary>
@@ -36,6 +49,9 @@ public class PaymentIntentPaymentMethodOptionsKonbini : StripeEntity<PaymentInte
         /// convenience store.
         /// </summary>
         [JsonProperty("product_description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_description")]
+#endif
         public string ProductDescription { get; set; }
 
         /// <summary>
@@ -59,6 +75,9 @@ public class PaymentIntentPaymentMethodOptionsKonbini : StripeEntity<PaymentInte
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsKrCard.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsKrCard.cs
index 1d0eea533b..8a59603ba9 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsKrCard.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsKrCard.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsKrCard : StripeEntity<PaymentIntentPaymentMethodOptionsKrCard>
     {
@@ -9,6 +12,9 @@ public class PaymentIntentPaymentMethodOptionsKrCard : StripeEntity<PaymentInten
         /// Controls when the funds will be captured from the customer's account.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
@@ -33,6 +39,9 @@ public class PaymentIntentPaymentMethodOptionsKrCard : StripeEntity<PaymentInten
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsLink.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsLink.cs
index 2f552792f7..28f32265dd 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsLink.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsLink.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsLink : StripeEntity<PaymentIntentPaymentMethodOptionsLink>
     {
@@ -10,6 +13,9 @@ public class PaymentIntentPaymentMethodOptionsLink : StripeEntity<PaymentIntentP
         /// Controls when the funds will be captured from the customer's account.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentIntentPaymentMethodOptionsLink : StripeEntity<PaymentIntentP
         /// </summary>
         [Obsolete("This property is deprecated, please refer to the description for details.")]
         [JsonProperty("persistent_token")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("persistent_token")]
+#endif
         public string PersistentToken { get; set; }
 
         /// <summary>
@@ -41,6 +50,9 @@ public class PaymentIntentPaymentMethodOptionsLink : StripeEntity<PaymentIntentP
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsMobilepay.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsMobilepay.cs
index 2601f6af4b..ff2823972d 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsMobilepay.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsMobilepay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsMobilepay : StripeEntity<PaymentIntentPaymentMethodOptionsMobilepay>
     {
@@ -9,6 +12,9 @@ public class PaymentIntentPaymentMethodOptionsMobilepay : StripeEntity<PaymentIn
         /// Controls when the funds will be captured from the customer's account.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
@@ -32,6 +38,9 @@ public class PaymentIntentPaymentMethodOptionsMobilepay : StripeEntity<PaymentIn
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsMultibanco.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsMultibanco.cs
index 55188afe92..466a0ed420 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsMultibanco.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsMultibanco.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsMultibanco : StripeEntity<PaymentIntentPaymentMethodOptionsMultibanco>
     {
@@ -26,6 +29,9 @@ public class PaymentIntentPaymentMethodOptionsMultibanco : StripeEntity<PaymentI
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsNaverPay.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsNaverPay.cs
index f6ab814155..a4d3d3824a 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsNaverPay.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsNaverPay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsNaverPay : StripeEntity<PaymentIntentPaymentMethodOptionsNaverPay>
     {
@@ -9,6 +12,9 @@ public class PaymentIntentPaymentMethodOptionsNaverPay : StripeEntity<PaymentInt
         /// Controls when the funds will be captured from the customer's account.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsOxxo.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsOxxo.cs
index 8893869269..612371c332 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsOxxo.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsOxxo.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsOxxo : StripeEntity<PaymentIntentPaymentMethodOptionsOxxo>
     {
@@ -11,6 +14,9 @@ public class PaymentIntentPaymentMethodOptionsOxxo : StripeEntity<PaymentIntentP
         /// expire on Wednesday at 23:59 America/Mexico_City time.
         /// </summary>
         [JsonProperty("expires_after_days")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_after_days")]
+#endif
         public long ExpiresAfterDays { get; set; }
 
         /// <summary>
@@ -34,6 +40,9 @@ public class PaymentIntentPaymentMethodOptionsOxxo : StripeEntity<PaymentIntentP
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsP24.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsP24.cs
index 0fc8a39d34..c60869a7fa 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsP24.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsP24.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsP24 : StripeEntity<PaymentIntentPaymentMethodOptionsP24>
     {
@@ -26,6 +29,9 @@ public class PaymentIntentPaymentMethodOptionsP24 : StripeEntity<PaymentIntentPa
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsPayco.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsPayco.cs
index 3f1ddf4552..4c58bb71d9 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsPayco.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsPayco.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsPayco : StripeEntity<PaymentIntentPaymentMethodOptionsPayco>
     {
@@ -9,6 +12,9 @@ public class PaymentIntentPaymentMethodOptionsPayco : StripeEntity<PaymentIntent
         /// Controls when the funds will be captured from the customer's account.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsPaynow.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsPaynow.cs
index 10142f6fea..daa001c642 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsPaynow.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsPaynow.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsPaynow : StripeEntity<PaymentIntentPaymentMethodOptionsPaynow>
     {
@@ -26,6 +29,9 @@ public class PaymentIntentPaymentMethodOptionsPaynow : StripeEntity<PaymentInten
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsPaypal.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsPaypal.cs
index 5d846d1a3c..060c15b26e 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsPaypal.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsPaypal.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsPaypal : StripeEntity<PaymentIntentPaymentMethodOptionsPaypal>
     {
@@ -9,12 +12,18 @@ public class PaymentIntentPaymentMethodOptionsPaypal : StripeEntity<PaymentInten
         /// Controls when the funds will be captured from the customer's account.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
         /// Preferred locale of the PayPal checkout page that the customer is redirected to.
         /// </summary>
         [JsonProperty("preferred_locale")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_locale")]
+#endif
         public string PreferredLocale { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class PaymentIntentPaymentMethodOptionsPaypal : StripeEntity<PaymentInten
         /// settings to block multiple payments per invoice ID.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
@@ -47,6 +59,9 @@ public class PaymentIntentPaymentMethodOptionsPaypal : StripeEntity<PaymentInten
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsPix.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsPix.cs
index c77aee6c61..5f5d66e9e4 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsPix.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsPix.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsPix : StripeEntity<PaymentIntentPaymentMethodOptionsPix>
     {
@@ -11,6 +14,9 @@ public class PaymentIntentPaymentMethodOptionsPix : StripeEntity<PaymentIntentPa
         /// The number of seconds (between 10 and 1209600) after which Pix payment will expire.
         /// </summary>
         [JsonProperty("expires_after_seconds")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_after_seconds")]
+#endif
         public long? ExpiresAfterSeconds { get; set; }
 
         /// <summary>
@@ -18,6 +24,10 @@ public class PaymentIntentPaymentMethodOptionsPix : StripeEntity<PaymentIntentPa
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpiresAt { get; set; }
 
         /// <summary>
@@ -41,6 +51,9 @@ public class PaymentIntentPaymentMethodOptionsPix : StripeEntity<PaymentIntentPa
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsPromptpay.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsPromptpay.cs
index 5541096e06..e77ad690ed 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsPromptpay.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsPromptpay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsPromptpay : StripeEntity<PaymentIntentPaymentMethodOptionsPromptpay>
     {
@@ -26,6 +29,9 @@ public class PaymentIntentPaymentMethodOptionsPromptpay : StripeEntity<PaymentIn
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsRevolutPay.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsRevolutPay.cs
index b4014f6dee..b0c345d448 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsRevolutPay.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsRevolutPay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsRevolutPay : StripeEntity<PaymentIntentPaymentMethodOptionsRevolutPay>
     {
@@ -9,6 +12,9 @@ public class PaymentIntentPaymentMethodOptionsRevolutPay : StripeEntity<PaymentI
         /// Controls when the funds will be captured from the customer's account.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
@@ -33,6 +39,9 @@ public class PaymentIntentPaymentMethodOptionsRevolutPay : StripeEntity<PaymentI
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsSamsungPay.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsSamsungPay.cs
index 11ee348fd2..3dc09c6e16 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsSamsungPay.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsSamsungPay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsSamsungPay : StripeEntity<PaymentIntentPaymentMethodOptionsSamsungPay>
     {
@@ -9,6 +12,9 @@ public class PaymentIntentPaymentMethodOptionsSamsungPay : StripeEntity<PaymentI
         /// Controls when the funds will be captured from the customer's account.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsSepaDebit.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsSepaDebit.cs
index 65428ae5d1..010367054d 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsSepaDebit.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsSepaDebit.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsSepaDebit : StripeEntity<PaymentIntentPaymentMethodOptionsSepaDebit>
     {
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public PaymentIntentPaymentMethodOptionsSepaDebitMandateOptions MandateOptions { get; set; }
 
         /// <summary>
@@ -30,6 +36,9 @@ public class PaymentIntentPaymentMethodOptionsSepaDebit : StripeEntity<PaymentIn
         /// One of: <c>none</c>, <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
@@ -38,6 +47,9 @@ public class PaymentIntentPaymentMethodOptionsSepaDebit : StripeEntity<PaymentIn
         /// and 15 calendar days from now.
         /// </summary>
         [JsonProperty("target_date")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("target_date")]
+#endif
         public string TargetDate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsSepaDebitMandateOptions.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsSepaDebitMandateOptions.cs
index e8e46e1c5b..61345b6eec 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsSepaDebitMandateOptions.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsSepaDebitMandateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsSepaDebitMandateOptions : StripeEntity<PaymentIntentPaymentMethodOptionsSepaDebitMandateOptions>
     {
@@ -11,6 +14,9 @@ public class PaymentIntentPaymentMethodOptionsSepaDebitMandateOptions : StripeEn
         /// '/', '_', '-', '&amp;', '.'. Cannot begin with 'STRIPE'.
         /// </summary>
         [JsonProperty("reference_prefix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference_prefix")]
+#endif
         public string ReferencePrefix { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsSofort.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsSofort.cs
index 4d23a3ae3c..1b5a11a258 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsSofort.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsSofort.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsSofort : StripeEntity<PaymentIntentPaymentMethodOptionsSofort>
     {
@@ -10,6 +13,9 @@ public class PaymentIntentPaymentMethodOptionsSofort : StripeEntity<PaymentInten
         /// One of: <c>de</c>, <c>en</c>, <c>es</c>, <c>fr</c>, <c>it</c>, <c>nl</c>, or <c>pl</c>.
         /// </summary>
         [JsonProperty("preferred_language")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_language")]
+#endif
         public string PreferredLanguage { get; set; }
 
         /// <summary>
@@ -34,6 +40,9 @@ public class PaymentIntentPaymentMethodOptionsSofort : StripeEntity<PaymentInten
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsSwish.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsSwish.cs
index 4367c18db5..c1e3a46073 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsSwish.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsSwish.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsSwish : StripeEntity<PaymentIntentPaymentMethodOptionsSwish>
     {
@@ -9,6 +12,9 @@ public class PaymentIntentPaymentMethodOptionsSwish : StripeEntity<PaymentIntent
         /// A reference for this payment to be displayed in the Swish app.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
@@ -32,6 +38,9 @@ public class PaymentIntentPaymentMethodOptionsSwish : StripeEntity<PaymentIntent
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsTwint.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsTwint.cs
index 6f38fa4b0e..3ea915deb2 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsTwint.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsTwint.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsTwint : StripeEntity<PaymentIntentPaymentMethodOptionsTwint>
     {
@@ -26,6 +29,9 @@ public class PaymentIntentPaymentMethodOptionsTwint : StripeEntity<PaymentIntent
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccount.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccount.cs
index f2684106c6..63e56fdf6e 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccount.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccount.cs
@@ -2,13 +2,22 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsUsBankAccount : StripeEntity<PaymentIntentPaymentMethodOptionsUsBankAccount>
     {
         [JsonProperty("financial_connections")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_connections")]
+#endif
         public PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnections FinancialConnections { get; set; }
 
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public PaymentIntentPaymentMethodOptionsUsBankAccountMandateOptions MandateOptions { get; set; }
 
         /// <summary>
@@ -16,6 +25,9 @@ public class PaymentIntentPaymentMethodOptionsUsBankAccount : StripeEntity<Payme
         /// One of: <c>fastest</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("preferred_settlement_speed")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_settlement_speed")]
+#endif
         public string PreferredSettlementSpeed { get; set; }
 
         /// <summary>
@@ -40,6 +52,9 @@ public class PaymentIntentPaymentMethodOptionsUsBankAccount : StripeEntity<Payme
         /// One of: <c>none</c>, <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
@@ -48,6 +63,9 @@ public class PaymentIntentPaymentMethodOptionsUsBankAccount : StripeEntity<Payme
         /// and 15 calendar days from now.
         /// </summary>
         [JsonProperty("target_date")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("target_date")]
+#endif
         public string TargetDate { get; set; }
 
         /// <summary>
@@ -55,6 +73,9 @@ public class PaymentIntentPaymentMethodOptionsUsBankAccount : StripeEntity<Payme
         /// One of: <c>automatic</c>, <c>instant</c>, or <c>microdeposits</c>.
         /// </summary>
         [JsonProperty("verification_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification_method")]
+#endif
         public string VerificationMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnections.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnections.cs
index 44c1ccdf2a..cf648d1b2b 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnections.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnections.cs
@@ -3,10 +3,16 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnections : StripeEntity<PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnections>
     {
         [JsonProperty("filters")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("filters")]
+#endif
         public PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters Filters { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnections
         /// <c>transactions</c>.
         /// </summary>
         [JsonProperty("permissions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("permissions")]
+#endif
         public List<string> Permissions { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnections
         /// One of: <c>balances</c>, <c>ownership</c>, or <c>transactions</c>.
         /// </summary>
         [JsonProperty("prefetch")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("prefetch")]
+#endif
         public List<string> Prefetch { get; set; }
 
         /// <summary>
@@ -30,6 +42,9 @@ public class PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnections
         /// user will be redirected to this URL to return to your app.
         /// </summary>
         [JsonProperty("return_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_url")]
+#endif
         public string ReturnUrl { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters.cs
index 32924ca145..8a90d9bdd9 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters : StripeEntity<PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters>
     {
@@ -12,6 +15,9 @@ public class PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsF
         /// One of: <c>checking</c>, or <c>savings</c>.
         /// </summary>
         [JsonProperty("account_subcategories")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_subcategories")]
+#endif
         public List<string> AccountSubcategories { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountMandateOptions.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountMandateOptions.cs
index 19fc4e7278..5915ad6b6c 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountMandateOptions.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountMandateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsUsBankAccountMandateOptions : StripeEntity<PaymentIntentPaymentMethodOptionsUsBankAccountMandateOptions>
     {
@@ -9,6 +12,9 @@ public class PaymentIntentPaymentMethodOptionsUsBankAccountMandateOptions : Stri
         /// Mandate collection method.
         /// </summary>
         [JsonProperty("collection_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("collection_method")]
+#endif
         public string CollectionMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsWechatPay.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsWechatPay.cs
index 1f38d69454..9aeb068bc0 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsWechatPay.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsWechatPay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsWechatPay : StripeEntity<PaymentIntentPaymentMethodOptionsWechatPay>
     {
@@ -9,6 +12,9 @@ public class PaymentIntentPaymentMethodOptionsWechatPay : StripeEntity<PaymentIn
         /// The app ID registered with WeChat Pay. Only required when client is ios or android.
         /// </summary>
         [JsonProperty("app_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("app_id")]
+#endif
         public string AppId { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class PaymentIntentPaymentMethodOptionsWechatPay : StripeEntity<PaymentIn
         /// One of: <c>android</c>, <c>ios</c>, or <c>web</c>.
         /// </summary>
         [JsonProperty("client")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("client")]
+#endif
         public string Client { get; set; }
 
         /// <summary>
@@ -39,6 +48,9 @@ public class PaymentIntentPaymentMethodOptionsWechatPay : StripeEntity<PaymentIn
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsZip.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsZip.cs
index bb4b988b9f..5eabad739a 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsZip.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentPaymentMethodOptionsZip.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsZip : StripeEntity<PaymentIntentPaymentMethodOptionsZip>
     {
@@ -26,6 +29,9 @@ public class PaymentIntentPaymentMethodOptionsZip : StripeEntity<PaymentIntentPa
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentProcessing.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentProcessing.cs
index d9820daca7..96383d27e7 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentProcessing.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentProcessing.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentProcessing : StripeEntity<PaymentIntentProcessing>
     {
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public PaymentIntentProcessingCard Card { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class PaymentIntentProcessing : StripeEntity<PaymentIntentProcessing>
         /// <c>card</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentProcessingCard.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentProcessingCard.cs
index 561e1c6438..6a461be0a5 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentProcessingCard.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentProcessingCard.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentProcessingCard : StripeEntity<PaymentIntentProcessingCard>
     {
         [JsonProperty("customer_notification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_notification")]
+#endif
         public PaymentIntentProcessingCardCustomerNotification CustomerNotification { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentProcessingCardCustomerNotification.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentProcessingCardCustomerNotification.cs
index 1382dc8af4..e7dcdff919 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentProcessingCardCustomerNotification.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentProcessingCardCustomerNotification.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentProcessingCardCustomerNotification : StripeEntity<PaymentIntentProcessingCardCustomerNotification>
     {
@@ -13,6 +16,9 @@ public class PaymentIntentProcessingCardCustomerNotification : StripeEntity<Paym
         /// with their bank.
         /// </summary>
         [JsonProperty("approval_requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("approval_requested")]
+#endif
         public bool? ApprovalRequested { get; set; }
 
         /// <summary>
@@ -20,6 +26,10 @@ public class PaymentIntentProcessingCardCustomerNotification : StripeEntity<Paym
         /// </summary>
         [JsonProperty("completes_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("completes_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? CompletesAt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentTransferData.cs b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentTransferData.cs
index 8083dd5b0d..35615d83e2 100644
--- a/src/Stripe.net/Entities/PaymentIntents/PaymentIntentTransferData.cs
+++ b/src/Stripe.net/Entities/PaymentIntents/PaymentIntentTransferData.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class PaymentIntentTransferData : StripeEntity<PaymentIntentTransferData>
     {
         /// <summary>
@@ -16,6 +22,9 @@ public class PaymentIntentTransferData : StripeEntity<PaymentIntentTransferData>
         /// currency unit (e.g., 100 cents to charge $1.00).
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         #region Expandable Destination
@@ -26,6 +35,9 @@ public class PaymentIntentTransferData : StripeEntity<PaymentIntentTransferData>
         /// funds from the payment are transferred to after payment success.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DestinationId
         {
             get => this.InternalDestination?.Id;
@@ -40,6 +52,9 @@ public string DestinationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Destination
         {
             get => this.InternalDestination?.ExpandedObject;
@@ -48,6 +63,10 @@ public Account Destination
 
         [JsonProperty("destination")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalDestination { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLink.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLink.cs
index 049d1be513..60701ea2d2 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLink.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLink.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A payment link is a shareable URL that will take your customers to a hosted payment
@@ -17,18 +20,27 @@ namespace Stripe
     ///
     /// Related guide: <a href="https://stripe.com/docs/payment-links">Payment Links API</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class PaymentLink : StripeEntity<PaymentLink>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -36,15 +48,24 @@ public class PaymentLink : StripeEntity<PaymentLink>, IHasId, IHasMetadata, IHas
         /// URL will be shown a page saying that the link has been deactivated.
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool Active { get; set; }
 
         [JsonProperty("after_completion")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("after_completion")]
+#endif
         public PaymentLinkAfterCompletion AfterCompletion { get; set; }
 
         /// <summary>
         /// Whether user redeemable promotion codes are enabled.
         /// </summary>
         [JsonProperty("allow_promotion_codes")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allow_promotion_codes")]
+#endif
         public bool AllowPromotionCodes { get; set; }
 
         #region Expandable Application
@@ -54,6 +75,9 @@ public class PaymentLink : StripeEntity<PaymentLink>, IHasId, IHasMetadata, IHas
         /// The ID of the Connect application that created the Payment Link.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ApplicationId
         {
             get => this.InternalApplication?.Id;
@@ -67,6 +91,9 @@ public string ApplicationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Application Application
         {
             get => this.InternalApplication?.ExpandedObject;
@@ -75,6 +102,10 @@ public Application Application
 
         [JsonProperty("application")]
         [JsonConverter(typeof(ExpandableFieldConverter<Application>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Application>))]
+#endif
         internal ExpandableField<Application> InternalApplication { get; set; }
         #endregion
 
@@ -83,6 +114,9 @@ public Application Application
         /// payment and transferred to the application owner's Stripe account.
         /// </summary>
         [JsonProperty("application_fee_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_amount")]
+#endif
         public long? ApplicationFeeAmount { get; set; }
 
         /// <summary>
@@ -90,9 +124,15 @@ public Application Application
         /// transferred to the application owner's Stripe account.
         /// </summary>
         [JsonProperty("application_fee_percent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_percent")]
+#endif
         public decimal? ApplicationFeePercent { get; set; }
 
         [JsonProperty("automatic_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatic_tax")]
+#endif
         public PaymentLinkAutomaticTax AutomaticTax { get; set; }
 
         /// <summary>
@@ -100,12 +140,18 @@ public Application Application
         /// One of: <c>auto</c>, or <c>required</c>.
         /// </summary>
         [JsonProperty("billing_address_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_address_collection")]
+#endif
         public string BillingAddressCollection { get; set; }
 
         /// <summary>
         /// When set, provides configuration to gather active consent from customers.
         /// </summary>
         [JsonProperty("consent_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("consent_collection")]
+#endif
         public PaymentLinkConsentCollection ConsentCollection { get; set; }
 
         /// <summary>
@@ -114,6 +160,9 @@ public Application Application
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -121,9 +170,15 @@ public Application Application
         /// are supported.
         /// </summary>
         [JsonProperty("custom_fields")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_fields")]
+#endif
         public List<PaymentLinkCustomField> CustomFields { get; set; }
 
         [JsonProperty("custom_text")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_text")]
+#endif
         public PaymentLinkCustomText CustomText { get; set; }
 
         /// <summary>
@@ -131,6 +186,9 @@ public Application Application
         /// One of: <c>always</c>, or <c>if_required</c>.
         /// </summary>
         [JsonProperty("customer_creation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_creation")]
+#endif
         public string CustomerCreation { get; set; }
 
         /// <summary>
@@ -138,18 +196,27 @@ public Application Application
         /// active.
         /// </summary>
         [JsonProperty("inactive_message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("inactive_message")]
+#endif
         public string InactiveMessage { get; set; }
 
         /// <summary>
         /// Configuration for creating invoice for payment mode payment links.
         /// </summary>
         [JsonProperty("invoice_creation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_creation")]
+#endif
         public PaymentLinkInvoiceCreation InvoiceCreation { get; set; }
 
         /// <summary>
         /// The line items representing what is being sold.
         /// </summary>
         [JsonProperty("line_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line_items")]
+#endif
         public StripeList<LineItem> LineItems { get; set; }
 
         /// <summary>
@@ -157,6 +224,9 @@ public Application Application
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -165,6 +235,9 @@ public Application Application
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         #region Expandable OnBehalfOf
@@ -176,6 +249,9 @@ public Application Application
         /// documentation</a> for details.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string OnBehalfOfId
         {
             get => this.InternalOnBehalfOf?.Id;
@@ -191,6 +267,9 @@ public string OnBehalfOfId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account OnBehalfOf
         {
             get => this.InternalOnBehalfOf?.ExpandedObject;
@@ -199,6 +278,10 @@ public Account OnBehalfOf
 
         [JsonProperty("on_behalf_of")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalOnBehalfOf { get; set; }
         #endregion
 
@@ -206,6 +289,9 @@ public Account OnBehalfOf
         /// Indicates the parameters to be passed to PaymentIntent creation during checkout.
         /// </summary>
         [JsonProperty("payment_intent_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_intent_data")]
+#endif
         public PaymentLinkPaymentIntentData PaymentIntentData { get; set; }
 
         /// <summary>
@@ -214,6 +300,9 @@ public Account OnBehalfOf
         /// One of: <c>always</c>, or <c>if_required</c>.
         /// </summary>
         [JsonProperty("payment_method_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_collection")]
+#endif
         public string PaymentMethodCollection { get; set; }
 
         /// <summary>
@@ -230,27 +319,42 @@ public Account OnBehalfOf
         /// <c>swish</c>, <c>twint</c>, <c>us_bank_account</c>, <c>wechat_pay</c>, or <c>zip</c>.
         /// </summary>
         [JsonProperty("payment_method_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_types")]
+#endif
         public List<string> PaymentMethodTypes { get; set; }
 
         [JsonProperty("phone_number_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone_number_collection")]
+#endif
         public PaymentLinkPhoneNumberCollection PhoneNumberCollection { get; set; }
 
         /// <summary>
         /// Settings that restrict the usage of a payment link.
         /// </summary>
         [JsonProperty("restrictions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("restrictions")]
+#endif
         public PaymentLinkRestrictions Restrictions { get; set; }
 
         /// <summary>
         /// Configuration for collecting the customer's shipping address.
         /// </summary>
         [JsonProperty("shipping_address_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_address_collection")]
+#endif
         public PaymentLinkShippingAddressCollection ShippingAddressCollection { get; set; }
 
         /// <summary>
         /// The shipping rate options applied to the session.
         /// </summary>
         [JsonProperty("shipping_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_options")]
+#endif
         public List<PaymentLinkShippingOption> ShippingOptions { get; set; }
 
         /// <summary>
@@ -259,6 +363,9 @@ public Account OnBehalfOf
         /// One of: <c>auto</c>, <c>book</c>, <c>donate</c>, <c>pay</c>, or <c>subscribe</c>.
         /// </summary>
         [JsonProperty("submit_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("submit_type")]
+#endif
         public string SubmitType { get; set; }
 
         /// <summary>
@@ -266,9 +373,15 @@ public Account OnBehalfOf
         /// be at least one line item with a recurring price to use <c>subscription_data</c>.
         /// </summary>
         [JsonProperty("subscription_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_data")]
+#endif
         public PaymentLinkSubscriptionData SubscriptionData { get; set; }
 
         [JsonProperty("tax_id_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_id_collection")]
+#endif
         public PaymentLinkTaxIdCollection TaxIdCollection { get; set; }
 
         /// <summary>
@@ -276,12 +389,18 @@ public Account OnBehalfOf
         /// funds from each payment will be transferred to.
         /// </summary>
         [JsonProperty("transfer_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_data")]
+#endif
         public PaymentLinkTransferData TransferData { get; set; }
 
         /// <summary>
         /// The public URL that can be shared with customers.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkAfterCompletion.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkAfterCompletion.cs
index 44d2335ad4..7f359e0a62 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkAfterCompletion.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkAfterCompletion.cs
@@ -2,13 +2,22 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkAfterCompletion : StripeEntity<PaymentLinkAfterCompletion>
     {
         [JsonProperty("hosted_confirmation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hosted_confirmation")]
+#endif
         public PaymentLinkAfterCompletionHostedConfirmation HostedConfirmation { get; set; }
 
         [JsonProperty("redirect")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("redirect")]
+#endif
         public PaymentLinkAfterCompletionRedirect Redirect { get; set; }
 
         /// <summary>
@@ -16,6 +25,9 @@ public class PaymentLinkAfterCompletion : StripeEntity<PaymentLinkAfterCompletio
         /// One of: <c>hosted_confirmation</c>, or <c>redirect</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkAfterCompletionHostedConfirmation.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkAfterCompletionHostedConfirmation.cs
index 0330bb00d6..c2ce550032 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkAfterCompletionHostedConfirmation.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkAfterCompletionHostedConfirmation.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkAfterCompletionHostedConfirmation : StripeEntity<PaymentLinkAfterCompletionHostedConfirmation>
     {
@@ -9,6 +12,9 @@ public class PaymentLinkAfterCompletionHostedConfirmation : StripeEntity<Payment
         /// The custom message that is displayed to the customer after the purchase is complete.
         /// </summary>
         [JsonProperty("custom_message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_message")]
+#endif
         public string CustomMessage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkAfterCompletionRedirect.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkAfterCompletionRedirect.cs
index f02316a335..ae8b82453c 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkAfterCompletionRedirect.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkAfterCompletionRedirect.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkAfterCompletionRedirect : StripeEntity<PaymentLinkAfterCompletionRedirect>
     {
@@ -9,6 +12,9 @@ public class PaymentLinkAfterCompletionRedirect : StripeEntity<PaymentLinkAfterC
         /// The URL the customer will be redirected to after the purchase is complete.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkAutomaticTax.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkAutomaticTax.cs
index 8847086291..1e150d786e 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkAutomaticTax.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkAutomaticTax.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkAutomaticTax : StripeEntity<PaymentLinkAutomaticTax>
     {
@@ -9,6 +12,9 @@ public class PaymentLinkAutomaticTax : StripeEntity<PaymentLinkAutomaticTax>
         /// If <c>true</c>, tax will be calculated automatically using the customer's location.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentLinkAutomaticTax : StripeEntity<PaymentLinkAutomaticTax>
         /// transaction is returned in the report of the connected account.
         /// </summary>
         [JsonProperty("liability")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("liability")]
+#endif
         public PaymentLinkAutomaticTaxLiability Liability { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkAutomaticTaxLiability.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkAutomaticTaxLiability.cs
index d1845cf3c9..95d27a0c2a 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkAutomaticTaxLiability.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkAutomaticTaxLiability.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class PaymentLinkAutomaticTaxLiability : StripeEntity<PaymentLinkAutomaticTaxLiability>
     {
         #region Expandable Account
@@ -13,6 +19,9 @@ public class PaymentLinkAutomaticTaxLiability : StripeEntity<PaymentLinkAutomati
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AccountId
         {
             get => this.InternalAccount?.Id;
@@ -26,6 +35,9 @@ public string AccountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Account
         {
             get => this.InternalAccount?.ExpandedObject;
@@ -34,6 +46,10 @@ public Account Account
 
         [JsonProperty("account")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalAccount { get; set; }
         #endregion
 
@@ -42,6 +58,9 @@ public Account Account
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkConsentCollection.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkConsentCollection.cs
index 71a0bb63dc..2df18db89d 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkConsentCollection.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkConsentCollection.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkConsentCollection : StripeEntity<PaymentLinkConsentCollection>
     {
@@ -9,6 +12,9 @@ public class PaymentLinkConsentCollection : StripeEntity<PaymentLinkConsentColle
         /// Settings related to the payment method reuse text shown in the Checkout UI.
         /// </summary>
         [JsonProperty("payment_method_reuse_agreement")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_reuse_agreement")]
+#endif
         public PaymentLinkConsentCollectionPaymentMethodReuseAgreement PaymentMethodReuseAgreement { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentLinkConsentCollection : StripeEntity<PaymentLinkConsentColle
         /// One of: <c>auto</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("promotions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotions")]
+#endif
         public string Promotions { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class PaymentLinkConsentCollection : StripeEntity<PaymentLinkConsentColle
         /// One of: <c>none</c>, or <c>required</c>.
         /// </summary>
         [JsonProperty("terms_of_service")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("terms_of_service")]
+#endif
         public string TermsOfService { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkConsentCollectionPaymentMethodReuseAgreement.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkConsentCollectionPaymentMethodReuseAgreement.cs
index a01cf0cca8..004d228638 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkConsentCollectionPaymentMethodReuseAgreement.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkConsentCollectionPaymentMethodReuseAgreement.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkConsentCollectionPaymentMethodReuseAgreement : StripeEntity<PaymentLinkConsentCollectionPaymentMethodReuseAgreement>
     {
@@ -14,6 +17,9 @@ public class PaymentLinkConsentCollectionPaymentMethodReuseAgreement : StripeEnt
         /// One of: <c>auto</c>, or <c>hidden</c>.
         /// </summary>
         [JsonProperty("position")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("position")]
+#endif
         public string Position { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomField.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomField.cs
index d38e11e4c4..efef443791 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomField.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomField.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkCustomField : StripeEntity<PaymentLinkCustomField>
     {
         [JsonProperty("dropdown")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dropdown")]
+#endif
         public PaymentLinkCustomFieldDropdown Dropdown { get; set; }
 
         /// <summary>
@@ -13,12 +19,21 @@ public class PaymentLinkCustomField : StripeEntity<PaymentLinkCustomField>
         /// unique to this field, alphanumeric, and up to 200 characters.
         /// </summary>
         [JsonProperty("key")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("key")]
+#endif
         public string Key { get; set; }
 
         [JsonProperty("label")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("label")]
+#endif
         public PaymentLinkCustomFieldLabel Label { get; set; }
 
         [JsonProperty("numeric")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("numeric")]
+#endif
         public PaymentLinkCustomFieldNumeric Numeric { get; set; }
 
         /// <summary>
@@ -26,9 +41,15 @@ public class PaymentLinkCustomField : StripeEntity<PaymentLinkCustomField>
         /// Session. Defaults to <c>false</c>.
         /// </summary>
         [JsonProperty("optional")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("optional")]
+#endif
         public bool Optional { get; set; }
 
         [JsonProperty("text")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("text")]
+#endif
         public PaymentLinkCustomFieldText Text { get; set; }
 
         /// <summary>
@@ -36,6 +57,9 @@ public class PaymentLinkCustomField : StripeEntity<PaymentLinkCustomField>
         /// One of: <c>dropdown</c>, <c>numeric</c>, or <c>text</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomFieldDropdown.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomFieldDropdown.cs
index d3b3f41180..3b500bc991 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomFieldDropdown.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomFieldDropdown.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkCustomFieldDropdown : StripeEntity<PaymentLinkCustomFieldDropdown>
     {
@@ -10,6 +13,9 @@ public class PaymentLinkCustomFieldDropdown : StripeEntity<PaymentLinkCustomFiel
         /// The options available for the customer to select. Up to 200 options allowed.
         /// </summary>
         [JsonProperty("options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("options")]
+#endif
         public List<PaymentLinkCustomFieldDropdownOption> Options { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomFieldDropdownOption.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomFieldDropdownOption.cs
index 2014d042b5..81c8015d1c 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomFieldDropdownOption.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomFieldDropdownOption.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkCustomFieldDropdownOption : StripeEntity<PaymentLinkCustomFieldDropdownOption>
     {
@@ -9,6 +12,9 @@ public class PaymentLinkCustomFieldDropdownOption : StripeEntity<PaymentLinkCust
         /// The label for the option, displayed to the customer. Up to 100 characters.
         /// </summary>
         [JsonProperty("label")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("label")]
+#endif
         public string Label { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentLinkCustomFieldDropdownOption : StripeEntity<PaymentLinkCust
         /// alphanumeric, and up to 100 characters.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomFieldLabel.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomFieldLabel.cs
index f4470189e2..97b24e1148 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomFieldLabel.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomFieldLabel.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkCustomFieldLabel : StripeEntity<PaymentLinkCustomFieldLabel>
     {
@@ -9,12 +12,18 @@ public class PaymentLinkCustomFieldLabel : StripeEntity<PaymentLinkCustomFieldLa
         /// Custom text for the label, displayed to the customer. Up to 50 characters.
         /// </summary>
         [JsonProperty("custom")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom")]
+#endif
         public string Custom { get; set; }
 
         /// <summary>
         /// The type of the label.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomFieldNumeric.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomFieldNumeric.cs
index 14d889dd83..e1240d901b 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomFieldNumeric.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomFieldNumeric.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkCustomFieldNumeric : StripeEntity<PaymentLinkCustomFieldNumeric>
     {
@@ -9,12 +12,18 @@ public class PaymentLinkCustomFieldNumeric : StripeEntity<PaymentLinkCustomField
         /// The maximum character length constraint for the customer's input.
         /// </summary>
         [JsonProperty("maximum_length")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("maximum_length")]
+#endif
         public long? MaximumLength { get; set; }
 
         /// <summary>
         /// The minimum character length requirement for the customer's input.
         /// </summary>
         [JsonProperty("minimum_length")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("minimum_length")]
+#endif
         public long? MinimumLength { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomFieldText.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomFieldText.cs
index 9ffcda976b..83a80e3888 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomFieldText.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomFieldText.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkCustomFieldText : StripeEntity<PaymentLinkCustomFieldText>
     {
@@ -9,12 +12,18 @@ public class PaymentLinkCustomFieldText : StripeEntity<PaymentLinkCustomFieldTex
         /// The maximum character length constraint for the customer's input.
         /// </summary>
         [JsonProperty("maximum_length")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("maximum_length")]
+#endif
         public long? MaximumLength { get; set; }
 
         /// <summary>
         /// The minimum character length requirement for the customer's input.
         /// </summary>
         [JsonProperty("minimum_length")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("minimum_length")]
+#endif
         public long? MinimumLength { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomText.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomText.cs
index ba7eab6b6d..a221e2835b 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomText.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomText.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkCustomText : StripeEntity<PaymentLinkCustomText>
     {
@@ -9,18 +12,27 @@ public class PaymentLinkCustomText : StripeEntity<PaymentLinkCustomText>
         /// Custom text that should be displayed after the payment confirmation button.
         /// </summary>
         [JsonProperty("after_submit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("after_submit")]
+#endif
         public PaymentLinkCustomTextAfterSubmit AfterSubmit { get; set; }
 
         /// <summary>
         /// Custom text that should be displayed alongside shipping address collection.
         /// </summary>
         [JsonProperty("shipping_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_address")]
+#endif
         public PaymentLinkCustomTextShippingAddress ShippingAddress { get; set; }
 
         /// <summary>
         /// Custom text that should be displayed alongside the payment confirmation button.
         /// </summary>
         [JsonProperty("submit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("submit")]
+#endif
         public PaymentLinkCustomTextSubmit Submit { get; set; }
 
         /// <summary>
@@ -28,6 +40,9 @@ public class PaymentLinkCustomText : StripeEntity<PaymentLinkCustomText>
         /// text.
         /// </summary>
         [JsonProperty("terms_of_service_acceptance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("terms_of_service_acceptance")]
+#endif
         public PaymentLinkCustomTextTermsOfServiceAcceptance TermsOfServiceAcceptance { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomTextAfterSubmit.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomTextAfterSubmit.cs
index 92251fa416..a921d25d6d 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomTextAfterSubmit.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomTextAfterSubmit.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkCustomTextAfterSubmit : StripeEntity<PaymentLinkCustomTextAfterSubmit>
     {
@@ -9,6 +12,9 @@ public class PaymentLinkCustomTextAfterSubmit : StripeEntity<PaymentLinkCustomTe
         /// Text may be up to 1200 characters in length.
         /// </summary>
         [JsonProperty("message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("message")]
+#endif
         public string Message { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomTextShippingAddress.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomTextShippingAddress.cs
index 4886bdfe1b..ff5b0b53bc 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomTextShippingAddress.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomTextShippingAddress.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkCustomTextShippingAddress : StripeEntity<PaymentLinkCustomTextShippingAddress>
     {
@@ -9,6 +12,9 @@ public class PaymentLinkCustomTextShippingAddress : StripeEntity<PaymentLinkCust
         /// Text may be up to 1200 characters in length.
         /// </summary>
         [JsonProperty("message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("message")]
+#endif
         public string Message { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomTextSubmit.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomTextSubmit.cs
index 232c56ae3e..e25982a951 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomTextSubmit.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomTextSubmit.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkCustomTextSubmit : StripeEntity<PaymentLinkCustomTextSubmit>
     {
@@ -9,6 +12,9 @@ public class PaymentLinkCustomTextSubmit : StripeEntity<PaymentLinkCustomTextSub
         /// Text may be up to 1200 characters in length.
         /// </summary>
         [JsonProperty("message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("message")]
+#endif
         public string Message { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomTextTermsOfServiceAcceptance.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomTextTermsOfServiceAcceptance.cs
index 47cad1685b..2b24ccea5d 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomTextTermsOfServiceAcceptance.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkCustomTextTermsOfServiceAcceptance.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkCustomTextTermsOfServiceAcceptance : StripeEntity<PaymentLinkCustomTextTermsOfServiceAcceptance>
     {
@@ -9,6 +12,9 @@ public class PaymentLinkCustomTextTermsOfServiceAcceptance : StripeEntity<Paymen
         /// Text may be up to 1200 characters in length.
         /// </summary>
         [JsonProperty("message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("message")]
+#endif
         public string Message { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkInvoiceCreation.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkInvoiceCreation.cs
index d58869e133..6210e97ed9 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkInvoiceCreation.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkInvoiceCreation.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkInvoiceCreation : StripeEntity<PaymentLinkInvoiceCreation>
     {
@@ -9,12 +12,18 @@ public class PaymentLinkInvoiceCreation : StripeEntity<PaymentLinkInvoiceCreatio
         /// Enable creating an invoice on successful payment.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         /// <summary>
         /// Configuration for the invoice. Default invoice values will be used if unspecified.
         /// </summary>
         [JsonProperty("invoice_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_data")]
+#endif
         public PaymentLinkInvoiceCreationInvoiceData InvoiceData { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkInvoiceCreationInvoiceData.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkInvoiceCreationInvoiceData.cs
index dc13e6034a..d2ea8977e7 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkInvoiceCreationInvoiceData.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkInvoiceCreationInvoiceData.cs
@@ -5,7 +5,13 @@ namespace Stripe
     using System.Linq;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class PaymentLinkInvoiceCreationInvoiceData : StripeEntity<PaymentLinkInvoiceCreationInvoiceData>, IHasMetadata
     {
         #region Expandable AccountTaxIds
@@ -15,6 +21,9 @@ public class PaymentLinkInvoiceCreationInvoiceData : StripeEntity<PaymentLinkInv
         /// The account tax IDs associated with the invoice.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public List<string> AccountTaxIdIds
         {
             get => this.InternalAccountTaxIds?.Select((x) => x.Id).ToList();
@@ -28,6 +37,9 @@ public List<string> AccountTaxIdIds
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public List<TaxId> AccountTaxIds
         {
             get => this.InternalAccountTaxIds?.Select((x) => x.ExpandedObject).ToList();
@@ -35,6 +47,9 @@ public List<TaxId> AccountTaxIds
         }
 
         [JsonProperty("account_tax_ids", ItemConverterType = typeof(ExpandableFieldConverter<TaxId>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_tax_ids")]
+#endif
         internal List<ExpandableField<TaxId>> InternalAccountTaxIds { get; set; }
         #endregion
 
@@ -42,18 +57,27 @@ public List<TaxId> AccountTaxIds
         /// A list of up to 4 custom fields to be displayed on the invoice.
         /// </summary>
         [JsonProperty("custom_fields")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_fields")]
+#endif
         public List<PaymentLinkInvoiceCreationInvoiceDataCustomField> CustomFields { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// Footer to be displayed on the invoice.
         /// </summary>
         [JsonProperty("footer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("footer")]
+#endif
         public string Footer { get; set; }
 
         /// <summary>
@@ -61,6 +85,9 @@ public List<TaxId> AccountTaxIds
         /// branding and support information of the specified account.
         /// </summary>
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public PaymentLinkInvoiceCreationInvoiceDataIssuer Issuer { get; set; }
 
         /// <summary>
@@ -69,12 +96,18 @@ public List<TaxId> AccountTaxIds
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Options for invoice PDF rendering.
         /// </summary>
         [JsonProperty("rendering_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("rendering_options")]
+#endif
         public PaymentLinkInvoiceCreationInvoiceDataRenderingOptions RenderingOptions { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkInvoiceCreationInvoiceDataCustomField.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkInvoiceCreationInvoiceDataCustomField.cs
index b84c4f9b2e..5819d84a45 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkInvoiceCreationInvoiceDataCustomField.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkInvoiceCreationInvoiceDataCustomField.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkInvoiceCreationInvoiceDataCustomField : StripeEntity<PaymentLinkInvoiceCreationInvoiceDataCustomField>
     {
@@ -9,12 +12,18 @@ public class PaymentLinkInvoiceCreationInvoiceDataCustomField : StripeEntity<Pay
         /// The name of the custom field.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// The value of the custom field.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkInvoiceCreationInvoiceDataIssuer.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkInvoiceCreationInvoiceDataIssuer.cs
index cf964991ee..7a943dcba7 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkInvoiceCreationInvoiceDataIssuer.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkInvoiceCreationInvoiceDataIssuer.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class PaymentLinkInvoiceCreationInvoiceDataIssuer : StripeEntity<PaymentLinkInvoiceCreationInvoiceDataIssuer>
     {
         #region Expandable Account
@@ -13,6 +19,9 @@ public class PaymentLinkInvoiceCreationInvoiceDataIssuer : StripeEntity<PaymentL
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AccountId
         {
             get => this.InternalAccount?.Id;
@@ -26,6 +35,9 @@ public string AccountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Account
         {
             get => this.InternalAccount?.ExpandedObject;
@@ -34,6 +46,10 @@ public Account Account
 
         [JsonProperty("account")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalAccount { get; set; }
         #endregion
 
@@ -42,6 +58,9 @@ public Account Account
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkInvoiceCreationInvoiceDataRenderingOptions.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkInvoiceCreationInvoiceDataRenderingOptions.cs
index 743f360d26..3a1fa06a35 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkInvoiceCreationInvoiceDataRenderingOptions.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkInvoiceCreationInvoiceDataRenderingOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkInvoiceCreationInvoiceDataRenderingOptions : StripeEntity<PaymentLinkInvoiceCreationInvoiceDataRenderingOptions>
     {
@@ -9,6 +12,9 @@ public class PaymentLinkInvoiceCreationInvoiceDataRenderingOptions : StripeEntit
         /// How line-item prices and amounts will be displayed with respect to tax on invoice PDFs.
         /// </summary>
         [JsonProperty("amount_tax_display")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_tax_display")]
+#endif
         public string AmountTaxDisplay { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkPaymentIntentData.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkPaymentIntentData.cs
index f318c4ab43..2c341b19ac 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkPaymentIntentData.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkPaymentIntentData.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkPaymentIntentData : StripeEntity<PaymentLinkPaymentIntentData>, IHasMetadata
     {
@@ -11,12 +14,18 @@ public class PaymentLinkPaymentIntentData : StripeEntity<PaymentLinkPaymentInten
         /// One of: <c>automatic</c>, <c>automatic_async</c>, or <c>manual</c>.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class PaymentLinkPaymentIntentData : StripeEntity<PaymentLinkPaymentInten
         /// generated from this payment link.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -33,6 +45,9 @@ public class PaymentLinkPaymentIntentData : StripeEntity<PaymentLinkPaymentInten
         /// One of: <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
@@ -40,6 +55,9 @@ public class PaymentLinkPaymentIntentData : StripeEntity<PaymentLinkPaymentInten
         /// statement when this payment succeeds in creating a charge.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
 
         /// <summary>
@@ -48,6 +66,9 @@ public class PaymentLinkPaymentIntentData : StripeEntity<PaymentLinkPaymentInten
         /// account's statement descriptor prefix to form the complete statement descriptor.
         /// </summary>
         [JsonProperty("statement_descriptor_suffix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_suffix")]
+#endif
         public string StatementDescriptorSuffix { get; set; }
 
         /// <summary>
@@ -57,6 +78,9 @@ public class PaymentLinkPaymentIntentData : StripeEntity<PaymentLinkPaymentInten
         /// connected accounts</a> for details.
         /// </summary>
         [JsonProperty("transfer_group")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_group")]
+#endif
         public string TransferGroup { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkPhoneNumberCollection.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkPhoneNumberCollection.cs
index a0334ea95f..fac70a13e0 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkPhoneNumberCollection.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkPhoneNumberCollection.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkPhoneNumberCollection : StripeEntity<PaymentLinkPhoneNumberCollection>
     {
@@ -9,6 +12,9 @@ public class PaymentLinkPhoneNumberCollection : StripeEntity<PaymentLinkPhoneNum
         /// If <c>true</c>, a phone number will be collected during checkout.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkRestrictions.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkRestrictions.cs
index f566e8589a..86e07fd9f2 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkRestrictions.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkRestrictions.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkRestrictions : StripeEntity<PaymentLinkRestrictions>
     {
         [JsonProperty("completed_sessions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("completed_sessions")]
+#endif
         public PaymentLinkRestrictionsCompletedSessions CompletedSessions { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkRestrictionsCompletedSessions.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkRestrictionsCompletedSessions.cs
index 3d72af2d7e..677d3c10b5 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkRestrictionsCompletedSessions.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkRestrictionsCompletedSessions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkRestrictionsCompletedSessions : StripeEntity<PaymentLinkRestrictionsCompletedSessions>
     {
@@ -10,6 +13,9 @@ public class PaymentLinkRestrictionsCompletedSessions : StripeEntity<PaymentLink
         /// which count towards the <c>completed_sessions</c> restriction to be met.
         /// </summary>
         [JsonProperty("count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("count")]
+#endif
         public long Count { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentLinkRestrictionsCompletedSessions : StripeEntity<PaymentLink
         /// <c>completed_sessions</c> restriction to be met.
         /// </summary>
         [JsonProperty("limit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("limit")]
+#endif
         public long Limit { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkShippingAddressCollection.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkShippingAddressCollection.cs
index b1667f75dd..8192032f98 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkShippingAddressCollection.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkShippingAddressCollection.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkShippingAddressCollection : StripeEntity<PaymentLinkShippingAddressCollection>
     {
@@ -42,6 +45,9 @@ public class PaymentLinkShippingAddressCollection : StripeEntity<PaymentLinkShip
         /// <c>XK</c>, <c>YE</c>, <c>YT</c>, <c>ZA</c>, <c>ZM</c>, <c>ZW</c>, or <c>ZZ</c>.
         /// </summary>
         [JsonProperty("allowed_countries")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allowed_countries")]
+#endif
         public List<string> AllowedCountries { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkShippingOption.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkShippingOption.cs
index 06d077f996..c544475952 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkShippingOption.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkShippingOption.cs
@@ -3,13 +3,22 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class PaymentLinkShippingOption : StripeEntity<PaymentLinkShippingOption>
     {
         /// <summary>
         /// A non-negative integer in cents representing how much to charge.
         /// </summary>
         [JsonProperty("shipping_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_amount")]
+#endif
         public long ShippingAmount { get; set; }
 
         #region Expandable ShippingRate
@@ -19,6 +28,9 @@ public class PaymentLinkShippingOption : StripeEntity<PaymentLinkShippingOption>
         /// The ID of the Shipping Rate to use for this shipping option.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ShippingRateId
         {
             get => this.InternalShippingRate?.Id;
@@ -32,6 +44,9 @@ public string ShippingRateId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public ShippingRate ShippingRate
         {
             get => this.InternalShippingRate?.ExpandedObject;
@@ -40,6 +55,10 @@ public ShippingRate ShippingRate
 
         [JsonProperty("shipping_rate")]
         [JsonConverter(typeof(ExpandableFieldConverter<ShippingRate>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_rate")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<ShippingRate>))]
+#endif
         internal ExpandableField<ShippingRate> InternalShippingRate { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkSubscriptionData.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkSubscriptionData.cs
index c32cb43157..89af872101 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkSubscriptionData.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkSubscriptionData.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkSubscriptionData : StripeEntity<PaymentLinkSubscriptionData>, IHasMetadata
     {
@@ -12,9 +15,15 @@ public class PaymentLinkSubscriptionData : StripeEntity<PaymentLinkSubscriptionD
         /// and certain local payment methods UIs.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         [JsonProperty("invoice_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_settings")]
+#endif
         public PaymentLinkSubscriptionDataInvoiceSettings InvoiceSettings { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class PaymentLinkSubscriptionData : StripeEntity<PaymentLinkSubscriptionD
         /// generated from this payment link.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -30,12 +42,18 @@ public class PaymentLinkSubscriptionData : StripeEntity<PaymentLinkSubscriptionD
         /// the first time.
         /// </summary>
         [JsonProperty("trial_period_days")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_period_days")]
+#endif
         public long? TrialPeriodDays { get; set; }
 
         /// <summary>
         /// Settings related to subscription trials.
         /// </summary>
         [JsonProperty("trial_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_settings")]
+#endif
         public PaymentLinkSubscriptionDataTrialSettings TrialSettings { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkSubscriptionDataInvoiceSettings.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkSubscriptionDataInvoiceSettings.cs
index edc7af6431..bb8c105528 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkSubscriptionDataInvoiceSettings.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkSubscriptionDataInvoiceSettings.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkSubscriptionDataInvoiceSettings : StripeEntity<PaymentLinkSubscriptionDataInvoiceSettings>
     {
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public PaymentLinkSubscriptionDataInvoiceSettingsIssuer Issuer { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkSubscriptionDataInvoiceSettingsIssuer.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkSubscriptionDataInvoiceSettingsIssuer.cs
index f7cef504d0..16fe9295ff 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkSubscriptionDataInvoiceSettingsIssuer.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkSubscriptionDataInvoiceSettingsIssuer.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class PaymentLinkSubscriptionDataInvoiceSettingsIssuer : StripeEntity<PaymentLinkSubscriptionDataInvoiceSettingsIssuer>
     {
         #region Expandable Account
@@ -13,6 +19,9 @@ public class PaymentLinkSubscriptionDataInvoiceSettingsIssuer : StripeEntity<Pay
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AccountId
         {
             get => this.InternalAccount?.Id;
@@ -26,6 +35,9 @@ public string AccountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Account
         {
             get => this.InternalAccount?.ExpandedObject;
@@ -34,6 +46,10 @@ public Account Account
 
         [JsonProperty("account")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalAccount { get; set; }
         #endregion
 
@@ -42,6 +58,9 @@ public Account Account
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkSubscriptionDataTrialSettings.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkSubscriptionDataTrialSettings.cs
index 246ae17c49..b7d16a3bfc 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkSubscriptionDataTrialSettings.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkSubscriptionDataTrialSettings.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkSubscriptionDataTrialSettings : StripeEntity<PaymentLinkSubscriptionDataTrialSettings>
     {
@@ -9,6 +12,9 @@ public class PaymentLinkSubscriptionDataTrialSettings : StripeEntity<PaymentLink
         /// Defines how a subscription behaves when a free trial ends.
         /// </summary>
         [JsonProperty("end_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end_behavior")]
+#endif
         public PaymentLinkSubscriptionDataTrialSettingsEndBehavior EndBehavior { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkSubscriptionDataTrialSettingsEndBehavior.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkSubscriptionDataTrialSettingsEndBehavior.cs
index 5b6bae07e3..37c7afbc72 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkSubscriptionDataTrialSettingsEndBehavior.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkSubscriptionDataTrialSettingsEndBehavior.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkSubscriptionDataTrialSettingsEndBehavior : StripeEntity<PaymentLinkSubscriptionDataTrialSettingsEndBehavior>
     {
@@ -11,6 +14,9 @@ public class PaymentLinkSubscriptionDataTrialSettingsEndBehavior : StripeEntity<
         /// One of: <c>cancel</c>, <c>create_invoice</c>, or <c>pause</c>.
         /// </summary>
         [JsonProperty("missing_payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("missing_payment_method")]
+#endif
         public string MissingPaymentMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkTaxIdCollection.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkTaxIdCollection.cs
index 7a729184d5..023353412a 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkTaxIdCollection.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkTaxIdCollection.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkTaxIdCollection : StripeEntity<PaymentLinkTaxIdCollection>
     {
@@ -9,12 +12,18 @@ public class PaymentLinkTaxIdCollection : StripeEntity<PaymentLinkTaxIdCollectio
         /// Indicates whether tax ID collection is enabled for the session.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         /// <summary>
         /// One of: <c>if_supported</c>, or <c>never</c>.
         /// </summary>
         [JsonProperty("required")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("required")]
+#endif
         public string Required { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkTransferData.cs b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkTransferData.cs
index b0c24b500c..2475924e3d 100644
--- a/src/Stripe.net/Entities/PaymentLinks/PaymentLinkTransferData.cs
+++ b/src/Stripe.net/Entities/PaymentLinks/PaymentLinkTransferData.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class PaymentLinkTransferData : StripeEntity<PaymentLinkTransferData>
     {
         /// <summary>
@@ -11,6 +17,9 @@ public class PaymentLinkTransferData : StripeEntity<PaymentLinkTransferData>
         /// account. By default, the entire amount is transferred to the destination.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         #region Expandable Destination
@@ -20,6 +29,9 @@ public class PaymentLinkTransferData : StripeEntity<PaymentLinkTransferData>
         /// The connected account receiving the transfer.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DestinationId
         {
             get => this.InternalDestination?.Id;
@@ -33,6 +45,9 @@ public string DestinationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Destination
         {
             get => this.InternalDestination?.ExpandedObject;
@@ -41,6 +56,10 @@ public Account Destination
 
         [JsonProperty("destination")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalDestination { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfiguration.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfiguration.cs
index 00144938c9..f6ccadefeb 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfiguration.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfiguration.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// PaymentMethodConfigurations control which payment methods are displayed to your
@@ -39,90 +42,168 @@ public class PaymentMethodConfiguration : StripeEntity<PaymentMethodConfiguratio
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         [JsonProperty("acss_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acss_debit")]
+#endif
         public PaymentMethodConfigurationAcssDebit AcssDebit { get; set; }
 
         /// <summary>
         /// Whether the configuration can be used for new payments.
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool Active { get; set; }
 
         [JsonProperty("affirm")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("affirm")]
+#endif
         public PaymentMethodConfigurationAffirm Affirm { get; set; }
 
         [JsonProperty("afterpay_clearpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("afterpay_clearpay")]
+#endif
         public PaymentMethodConfigurationAfterpayClearpay AfterpayClearpay { get; set; }
 
         [JsonProperty("alipay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alipay")]
+#endif
         public PaymentMethodConfigurationAlipay Alipay { get; set; }
 
         [JsonProperty("alma")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alma")]
+#endif
         public PaymentMethodConfigurationAlma Alma { get; set; }
 
         [JsonProperty("amazon_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amazon_pay")]
+#endif
         public PaymentMethodConfigurationAmazonPay AmazonPay { get; set; }
 
         [JsonProperty("apple_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("apple_pay")]
+#endif
         public PaymentMethodConfigurationApplePay ApplePay { get; set; }
 
         /// <summary>
         /// For child configs, the Connect application associated with the configuration.
         /// </summary>
         [JsonProperty("application")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application")]
+#endif
         public string Application { get; set; }
 
         [JsonProperty("au_becs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("au_becs_debit")]
+#endif
         public PaymentMethodConfigurationAuBecsDebit AuBecsDebit { get; set; }
 
         [JsonProperty("bacs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bacs_debit")]
+#endif
         public PaymentMethodConfigurationBacsDebit BacsDebit { get; set; }
 
         [JsonProperty("bancontact")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bancontact")]
+#endif
         public PaymentMethodConfigurationBancontact Bancontact { get; set; }
 
         [JsonProperty("blik")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("blik")]
+#endif
         public PaymentMethodConfigurationBlik Blik { get; set; }
 
         [JsonProperty("boleto")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("boleto")]
+#endif
         public PaymentMethodConfigurationBoleto Boleto { get; set; }
 
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public PaymentMethodConfigurationCard Card { get; set; }
 
         [JsonProperty("cartes_bancaires")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cartes_bancaires")]
+#endif
         public PaymentMethodConfigurationCartesBancaires CartesBancaires { get; set; }
 
         [JsonProperty("cashapp")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cashapp")]
+#endif
         public PaymentMethodConfigurationCashapp Cashapp { get; set; }
 
         [JsonProperty("customer_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_balance")]
+#endif
         public PaymentMethodConfigurationCustomerBalance CustomerBalance { get; set; }
 
         [JsonProperty("eps")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eps")]
+#endif
         public PaymentMethodConfigurationEps Eps { get; set; }
 
         [JsonProperty("fpx")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fpx")]
+#endif
         public PaymentMethodConfigurationFpx Fpx { get; set; }
 
         [JsonProperty("giropay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("giropay")]
+#endif
         public PaymentMethodConfigurationGiropay Giropay { get; set; }
 
         [JsonProperty("google_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("google_pay")]
+#endif
         public PaymentMethodConfigurationGooglePay GooglePay { get; set; }
 
         [JsonProperty("grabpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("grabpay")]
+#endif
         public PaymentMethodConfigurationGrabpay Grabpay { get; set; }
 
         [JsonProperty("ideal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ideal")]
+#endif
         public PaymentMethodConfigurationIdeal Ideal { get; set; }
 
         /// <summary>
@@ -130,18 +211,33 @@ public class PaymentMethodConfiguration : StripeEntity<PaymentMethodConfiguratio
         /// specified.
         /// </summary>
         [JsonProperty("is_default")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("is_default")]
+#endif
         public bool IsDefault { get; set; }
 
         [JsonProperty("jcb")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("jcb")]
+#endif
         public PaymentMethodConfigurationJcb Jcb { get; set; }
 
         [JsonProperty("klarna")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("klarna")]
+#endif
         public PaymentMethodConfigurationKlarna Klarna { get; set; }
 
         [JsonProperty("konbini")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("konbini")]
+#endif
         public PaymentMethodConfigurationKonbini Konbini { get; set; }
 
         [JsonProperty("link")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("link")]
+#endif
         public PaymentMethodConfigurationLink Link { get; set; }
 
         /// <summary>
@@ -149,66 +245,123 @@ public class PaymentMethodConfiguration : StripeEntity<PaymentMethodConfiguratio
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         [JsonProperty("mobilepay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mobilepay")]
+#endif
         public PaymentMethodConfigurationMobilepay Mobilepay { get; set; }
 
         [JsonProperty("multibanco")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("multibanco")]
+#endif
         public PaymentMethodConfigurationMultibanco Multibanco { get; set; }
 
         /// <summary>
         /// The configuration's name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         [JsonProperty("oxxo")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("oxxo")]
+#endif
         public PaymentMethodConfigurationOxxo Oxxo { get; set; }
 
         [JsonProperty("p24")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("p24")]
+#endif
         public PaymentMethodConfigurationP24 P24 { get; set; }
 
         /// <summary>
         /// For child configs, the configuration's parent configuration.
         /// </summary>
         [JsonProperty("parent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("parent")]
+#endif
         public string Parent { get; set; }
 
         [JsonProperty("pay_by_bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_by_bank")]
+#endif
         public PaymentMethodConfigurationPayByBank PayByBank { get; set; }
 
         [JsonProperty("paynow")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paynow")]
+#endif
         public PaymentMethodConfigurationPaynow Paynow { get; set; }
 
         [JsonProperty("paypal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paypal")]
+#endif
         public PaymentMethodConfigurationPaypal Paypal { get; set; }
 
         [JsonProperty("promptpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promptpay")]
+#endif
         public PaymentMethodConfigurationPromptpay Promptpay { get; set; }
 
         [JsonProperty("revolut_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("revolut_pay")]
+#endif
         public PaymentMethodConfigurationRevolutPay RevolutPay { get; set; }
 
         [JsonProperty("sepa_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_debit")]
+#endif
         public PaymentMethodConfigurationSepaDebit SepaDebit { get; set; }
 
         [JsonProperty("sofort")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sofort")]
+#endif
         public PaymentMethodConfigurationSofort Sofort { get; set; }
 
         [JsonProperty("swish")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("swish")]
+#endif
         public PaymentMethodConfigurationSwish Swish { get; set; }
 
         [JsonProperty("twint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("twint")]
+#endif
         public PaymentMethodConfigurationTwint Twint { get; set; }
 
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public PaymentMethodConfigurationUsBankAccount UsBankAccount { get; set; }
 
         [JsonProperty("wechat_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wechat_pay")]
+#endif
         public PaymentMethodConfigurationWechatPay WechatPay { get; set; }
 
         [JsonProperty("zip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("zip")]
+#endif
         public PaymentMethodConfigurationZip Zip { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAcssDebit.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAcssDebit.cs
index f481b3dca9..2bb98c9e5d 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAcssDebit.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAcssDebit.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationAcssDebit : StripeEntity<PaymentMethodConfigurationAcssDebit>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationAcssDebit : StripeEntity<PaymentMethodCon
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationAcssDebitDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAcssDebitDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAcssDebitDisplayPreference.cs
index cebe7769fd..d6962479c5 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAcssDebitDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAcssDebitDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationAcssDebitDisplayPreference : StripeEntity<PaymentMethodConfigurationAcssDebitDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationAcssDebitDisplayPreference : StripeEntity
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationAcssDebitDisplayPreference : StripeEntity
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationAcssDebitDisplayPreference : StripeEntity
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAffirm.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAffirm.cs
index c0946a13af..62bbb800a9 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAffirm.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAffirm.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationAffirm : StripeEntity<PaymentMethodConfigurationAffirm>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationAffirm : StripeEntity<PaymentMethodConfig
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationAffirmDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAffirmDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAffirmDisplayPreference.cs
index d8a33c267f..42801852c5 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAffirmDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAffirmDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationAffirmDisplayPreference : StripeEntity<PaymentMethodConfigurationAffirmDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationAffirmDisplayPreference : StripeEntity<Pa
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationAffirmDisplayPreference : StripeEntity<Pa
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationAffirmDisplayPreference : StripeEntity<Pa
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAfterpayClearpay.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAfterpayClearpay.cs
index 3a5a5fbacf..89bc5f3fc3 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAfterpayClearpay.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAfterpayClearpay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationAfterpayClearpay : StripeEntity<PaymentMethodConfigurationAfterpayClearpay>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationAfterpayClearpay : StripeEntity<PaymentMe
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationAfterpayClearpayDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAfterpayClearpayDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAfterpayClearpayDisplayPreference.cs
index bcfbad5e12..ce2d5b3b8e 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAfterpayClearpayDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAfterpayClearpayDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationAfterpayClearpayDisplayPreference : StripeEntity<PaymentMethodConfigurationAfterpayClearpayDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationAfterpayClearpayDisplayPreference : Strip
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationAfterpayClearpayDisplayPreference : Strip
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationAfterpayClearpayDisplayPreference : Strip
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAlipay.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAlipay.cs
index 6a9ded7310..1a479aebe6 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAlipay.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAlipay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationAlipay : StripeEntity<PaymentMethodConfigurationAlipay>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationAlipay : StripeEntity<PaymentMethodConfig
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationAlipayDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAlipayDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAlipayDisplayPreference.cs
index b9c5ee6b8f..13e9adb333 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAlipayDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAlipayDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationAlipayDisplayPreference : StripeEntity<PaymentMethodConfigurationAlipayDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationAlipayDisplayPreference : StripeEntity<Pa
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationAlipayDisplayPreference : StripeEntity<Pa
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationAlipayDisplayPreference : StripeEntity<Pa
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAlma.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAlma.cs
index 5aa5829db2..a5c85df897 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAlma.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAlma.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationAlma : StripeEntity<PaymentMethodConfigurationAlma>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationAlma : StripeEntity<PaymentMethodConfigur
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationAlmaDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAlmaDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAlmaDisplayPreference.cs
index 4b1e0964f3..a2be643837 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAlmaDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAlmaDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationAlmaDisplayPreference : StripeEntity<PaymentMethodConfigurationAlmaDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationAlmaDisplayPreference : StripeEntity<Paym
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationAlmaDisplayPreference : StripeEntity<Paym
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationAlmaDisplayPreference : StripeEntity<Paym
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAmazonPay.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAmazonPay.cs
index 7e056dbb59..7276e1908f 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAmazonPay.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAmazonPay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationAmazonPay : StripeEntity<PaymentMethodConfigurationAmazonPay>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationAmazonPay : StripeEntity<PaymentMethodCon
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationAmazonPayDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAmazonPayDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAmazonPayDisplayPreference.cs
index dba0e78fa7..e655a923f5 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAmazonPayDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAmazonPayDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationAmazonPayDisplayPreference : StripeEntity<PaymentMethodConfigurationAmazonPayDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationAmazonPayDisplayPreference : StripeEntity
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationAmazonPayDisplayPreference : StripeEntity
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationAmazonPayDisplayPreference : StripeEntity
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationApplePay.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationApplePay.cs
index 468244abff..01d5e82b85 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationApplePay.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationApplePay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationApplePay : StripeEntity<PaymentMethodConfigurationApplePay>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationApplePay : StripeEntity<PaymentMethodConf
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationApplePayDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationApplePayDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationApplePayDisplayPreference.cs
index f281047a63..f85ea3ea95 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationApplePayDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationApplePayDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationApplePayDisplayPreference : StripeEntity<PaymentMethodConfigurationApplePayDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationApplePayDisplayPreference : StripeEntity<
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationApplePayDisplayPreference : StripeEntity<
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationApplePayDisplayPreference : StripeEntity<
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAuBecsDebit.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAuBecsDebit.cs
index 74a93f0c8d..5aa410fc88 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAuBecsDebit.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAuBecsDebit.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationAuBecsDebit : StripeEntity<PaymentMethodConfigurationAuBecsDebit>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationAuBecsDebit : StripeEntity<PaymentMethodC
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationAuBecsDebitDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAuBecsDebitDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAuBecsDebitDisplayPreference.cs
index 36f8f51ed3..82b40b25e2 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAuBecsDebitDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationAuBecsDebitDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationAuBecsDebitDisplayPreference : StripeEntity<PaymentMethodConfigurationAuBecsDebitDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationAuBecsDebitDisplayPreference : StripeEnti
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationAuBecsDebitDisplayPreference : StripeEnti
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationAuBecsDebitDisplayPreference : StripeEnti
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBacsDebit.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBacsDebit.cs
index a312771330..78842d65b6 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBacsDebit.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBacsDebit.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationBacsDebit : StripeEntity<PaymentMethodConfigurationBacsDebit>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationBacsDebit : StripeEntity<PaymentMethodCon
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationBacsDebitDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBacsDebitDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBacsDebitDisplayPreference.cs
index 6e51069d6c..d092eaaf43 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBacsDebitDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBacsDebitDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationBacsDebitDisplayPreference : StripeEntity<PaymentMethodConfigurationBacsDebitDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationBacsDebitDisplayPreference : StripeEntity
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationBacsDebitDisplayPreference : StripeEntity
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationBacsDebitDisplayPreference : StripeEntity
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBancontact.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBancontact.cs
index 8c43b6ce2d..e3e73cb381 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBancontact.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBancontact.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationBancontact : StripeEntity<PaymentMethodConfigurationBancontact>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationBancontact : StripeEntity<PaymentMethodCo
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationBancontactDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBancontactDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBancontactDisplayPreference.cs
index 1a0dd12845..d76e3dbee8 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBancontactDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBancontactDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationBancontactDisplayPreference : StripeEntity<PaymentMethodConfigurationBancontactDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationBancontactDisplayPreference : StripeEntit
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationBancontactDisplayPreference : StripeEntit
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationBancontactDisplayPreference : StripeEntit
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBlik.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBlik.cs
index ce58345c28..bf50d35c65 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBlik.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBlik.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationBlik : StripeEntity<PaymentMethodConfigurationBlik>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationBlik : StripeEntity<PaymentMethodConfigur
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationBlikDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBlikDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBlikDisplayPreference.cs
index dddc43a90b..7d2a2e0b06 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBlikDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBlikDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationBlikDisplayPreference : StripeEntity<PaymentMethodConfigurationBlikDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationBlikDisplayPreference : StripeEntity<Paym
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationBlikDisplayPreference : StripeEntity<Paym
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationBlikDisplayPreference : StripeEntity<Paym
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBoleto.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBoleto.cs
index dc8b9f4a4a..882349f66d 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBoleto.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBoleto.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationBoleto : StripeEntity<PaymentMethodConfigurationBoleto>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationBoleto : StripeEntity<PaymentMethodConfig
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationBoletoDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBoletoDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBoletoDisplayPreference.cs
index 7c8b75cd9d..86195d78ac 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBoletoDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationBoletoDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationBoletoDisplayPreference : StripeEntity<PaymentMethodConfigurationBoletoDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationBoletoDisplayPreference : StripeEntity<Pa
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationBoletoDisplayPreference : StripeEntity<Pa
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationBoletoDisplayPreference : StripeEntity<Pa
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCard.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCard.cs
index d8e357e2ed..710e5bdc4b 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCard.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCard.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationCard : StripeEntity<PaymentMethodConfigurationCard>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationCard : StripeEntity<PaymentMethodConfigur
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationCardDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCardDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCardDisplayPreference.cs
index a7cabd3651..88cee5e28f 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCardDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCardDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationCardDisplayPreference : StripeEntity<PaymentMethodConfigurationCardDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationCardDisplayPreference : StripeEntity<Paym
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationCardDisplayPreference : StripeEntity<Paym
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationCardDisplayPreference : StripeEntity<Paym
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCartesBancaires.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCartesBancaires.cs
index 261aa7220e..174d465dd5 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCartesBancaires.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCartesBancaires.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationCartesBancaires : StripeEntity<PaymentMethodConfigurationCartesBancaires>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationCartesBancaires : StripeEntity<PaymentMet
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationCartesBancairesDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCartesBancairesDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCartesBancairesDisplayPreference.cs
index 61dae7164f..3ac0d1378a 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCartesBancairesDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCartesBancairesDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationCartesBancairesDisplayPreference : StripeEntity<PaymentMethodConfigurationCartesBancairesDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationCartesBancairesDisplayPreference : Stripe
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationCartesBancairesDisplayPreference : Stripe
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationCartesBancairesDisplayPreference : Stripe
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCashapp.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCashapp.cs
index d630f58f7f..37e3ae9bae 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCashapp.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCashapp.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationCashapp : StripeEntity<PaymentMethodConfigurationCashapp>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationCashapp : StripeEntity<PaymentMethodConfi
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationCashappDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCashappDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCashappDisplayPreference.cs
index b20ecb3f68..e7938bc0ce 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCashappDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCashappDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationCashappDisplayPreference : StripeEntity<PaymentMethodConfigurationCashappDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationCashappDisplayPreference : StripeEntity<P
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationCashappDisplayPreference : StripeEntity<P
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationCashappDisplayPreference : StripeEntity<P
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCustomerBalance.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCustomerBalance.cs
index 1ce4a3fc3a..8559e37b3a 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCustomerBalance.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCustomerBalance.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationCustomerBalance : StripeEntity<PaymentMethodConfigurationCustomerBalance>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationCustomerBalance : StripeEntity<PaymentMet
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationCustomerBalanceDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCustomerBalanceDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCustomerBalanceDisplayPreference.cs
index f6a82dab3c..b696477c8e 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCustomerBalanceDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationCustomerBalanceDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationCustomerBalanceDisplayPreference : StripeEntity<PaymentMethodConfigurationCustomerBalanceDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationCustomerBalanceDisplayPreference : Stripe
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationCustomerBalanceDisplayPreference : Stripe
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationCustomerBalanceDisplayPreference : Stripe
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationEps.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationEps.cs
index 4fa6cbe412..3dd34a3123 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationEps.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationEps.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationEps : StripeEntity<PaymentMethodConfigurationEps>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationEps : StripeEntity<PaymentMethodConfigura
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationEpsDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationEpsDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationEpsDisplayPreference.cs
index d77ac2c819..df1f23f3e3 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationEpsDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationEpsDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationEpsDisplayPreference : StripeEntity<PaymentMethodConfigurationEpsDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationEpsDisplayPreference : StripeEntity<Payme
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationEpsDisplayPreference : StripeEntity<Payme
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationEpsDisplayPreference : StripeEntity<Payme
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationFpx.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationFpx.cs
index 12c0c06a37..b0754fb7f5 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationFpx.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationFpx.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationFpx : StripeEntity<PaymentMethodConfigurationFpx>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationFpx : StripeEntity<PaymentMethodConfigura
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationFpxDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationFpxDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationFpxDisplayPreference.cs
index 993695840f..728a866cf0 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationFpxDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationFpxDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationFpxDisplayPreference : StripeEntity<PaymentMethodConfigurationFpxDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationFpxDisplayPreference : StripeEntity<Payme
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationFpxDisplayPreference : StripeEntity<Payme
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationFpxDisplayPreference : StripeEntity<Payme
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationGiropay.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationGiropay.cs
index e69f906868..635e1e00ea 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationGiropay.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationGiropay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationGiropay : StripeEntity<PaymentMethodConfigurationGiropay>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationGiropay : StripeEntity<PaymentMethodConfi
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationGiropayDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationGiropayDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationGiropayDisplayPreference.cs
index 0dd1267603..2e05a7044f 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationGiropayDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationGiropayDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationGiropayDisplayPreference : StripeEntity<PaymentMethodConfigurationGiropayDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationGiropayDisplayPreference : StripeEntity<P
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationGiropayDisplayPreference : StripeEntity<P
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationGiropayDisplayPreference : StripeEntity<P
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationGooglePay.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationGooglePay.cs
index 826b5899b3..fe5ac6f5cf 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationGooglePay.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationGooglePay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationGooglePay : StripeEntity<PaymentMethodConfigurationGooglePay>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationGooglePay : StripeEntity<PaymentMethodCon
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationGooglePayDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationGooglePayDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationGooglePayDisplayPreference.cs
index a2259e163b..a86d98550b 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationGooglePayDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationGooglePayDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationGooglePayDisplayPreference : StripeEntity<PaymentMethodConfigurationGooglePayDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationGooglePayDisplayPreference : StripeEntity
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationGooglePayDisplayPreference : StripeEntity
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationGooglePayDisplayPreference : StripeEntity
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationGrabpay.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationGrabpay.cs
index 3a1fe7b11f..c84570319f 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationGrabpay.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationGrabpay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationGrabpay : StripeEntity<PaymentMethodConfigurationGrabpay>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationGrabpay : StripeEntity<PaymentMethodConfi
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationGrabpayDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationGrabpayDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationGrabpayDisplayPreference.cs
index 7d21fbc115..ec950080cb 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationGrabpayDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationGrabpayDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationGrabpayDisplayPreference : StripeEntity<PaymentMethodConfigurationGrabpayDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationGrabpayDisplayPreference : StripeEntity<P
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationGrabpayDisplayPreference : StripeEntity<P
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationGrabpayDisplayPreference : StripeEntity<P
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationIdeal.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationIdeal.cs
index 0868e74b70..6175748555 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationIdeal.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationIdeal.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationIdeal : StripeEntity<PaymentMethodConfigurationIdeal>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationIdeal : StripeEntity<PaymentMethodConfigu
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationIdealDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationIdealDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationIdealDisplayPreference.cs
index 13288fc702..ec72820268 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationIdealDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationIdealDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationIdealDisplayPreference : StripeEntity<PaymentMethodConfigurationIdealDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationIdealDisplayPreference : StripeEntity<Pay
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationIdealDisplayPreference : StripeEntity<Pay
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationIdealDisplayPreference : StripeEntity<Pay
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationJcb.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationJcb.cs
index ce20abe0bd..3816dec042 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationJcb.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationJcb.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationJcb : StripeEntity<PaymentMethodConfigurationJcb>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationJcb : StripeEntity<PaymentMethodConfigura
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationJcbDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationJcbDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationJcbDisplayPreference.cs
index b6f1e7151b..e6e4298ea6 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationJcbDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationJcbDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationJcbDisplayPreference : StripeEntity<PaymentMethodConfigurationJcbDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationJcbDisplayPreference : StripeEntity<Payme
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationJcbDisplayPreference : StripeEntity<Payme
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationJcbDisplayPreference : StripeEntity<Payme
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationKlarna.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationKlarna.cs
index e651debd23..12838d1b07 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationKlarna.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationKlarna.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationKlarna : StripeEntity<PaymentMethodConfigurationKlarna>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationKlarna : StripeEntity<PaymentMethodConfig
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationKlarnaDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationKlarnaDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationKlarnaDisplayPreference.cs
index b3baad3e12..54aa309cb7 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationKlarnaDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationKlarnaDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationKlarnaDisplayPreference : StripeEntity<PaymentMethodConfigurationKlarnaDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationKlarnaDisplayPreference : StripeEntity<Pa
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationKlarnaDisplayPreference : StripeEntity<Pa
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationKlarnaDisplayPreference : StripeEntity<Pa
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationKonbini.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationKonbini.cs
index 03ac4a9a03..34674c4781 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationKonbini.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationKonbini.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationKonbini : StripeEntity<PaymentMethodConfigurationKonbini>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationKonbini : StripeEntity<PaymentMethodConfi
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationKonbiniDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationKonbiniDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationKonbiniDisplayPreference.cs
index e9f3dcb0cc..c296febdcb 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationKonbiniDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationKonbiniDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationKonbiniDisplayPreference : StripeEntity<PaymentMethodConfigurationKonbiniDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationKonbiniDisplayPreference : StripeEntity<P
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationKonbiniDisplayPreference : StripeEntity<P
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationKonbiniDisplayPreference : StripeEntity<P
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationLink.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationLink.cs
index dc189be7fe..fbe8d00f21 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationLink.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationLink.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationLink : StripeEntity<PaymentMethodConfigurationLink>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationLink : StripeEntity<PaymentMethodConfigur
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationLinkDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationLinkDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationLinkDisplayPreference.cs
index d2a8b0e89d..0fdc85a0ef 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationLinkDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationLinkDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationLinkDisplayPreference : StripeEntity<PaymentMethodConfigurationLinkDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationLinkDisplayPreference : StripeEntity<Paym
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationLinkDisplayPreference : StripeEntity<Paym
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationLinkDisplayPreference : StripeEntity<Paym
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationMobilepay.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationMobilepay.cs
index 8f3888b1c0..ac20b4e73e 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationMobilepay.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationMobilepay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationMobilepay : StripeEntity<PaymentMethodConfigurationMobilepay>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationMobilepay : StripeEntity<PaymentMethodCon
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationMobilepayDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationMobilepayDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationMobilepayDisplayPreference.cs
index c1c9abc7ec..089519b36a 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationMobilepayDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationMobilepayDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationMobilepayDisplayPreference : StripeEntity<PaymentMethodConfigurationMobilepayDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationMobilepayDisplayPreference : StripeEntity
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationMobilepayDisplayPreference : StripeEntity
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationMobilepayDisplayPreference : StripeEntity
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationMultibanco.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationMultibanco.cs
index 9fc67d8b99..78cb43e80d 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationMultibanco.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationMultibanco.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationMultibanco : StripeEntity<PaymentMethodConfigurationMultibanco>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationMultibanco : StripeEntity<PaymentMethodCo
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationMultibancoDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationMultibancoDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationMultibancoDisplayPreference.cs
index c36c31d9d4..2e60d87992 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationMultibancoDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationMultibancoDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationMultibancoDisplayPreference : StripeEntity<PaymentMethodConfigurationMultibancoDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationMultibancoDisplayPreference : StripeEntit
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationMultibancoDisplayPreference : StripeEntit
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationMultibancoDisplayPreference : StripeEntit
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationOxxo.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationOxxo.cs
index 8797824d62..efa72c7185 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationOxxo.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationOxxo.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationOxxo : StripeEntity<PaymentMethodConfigurationOxxo>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationOxxo : StripeEntity<PaymentMethodConfigur
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationOxxoDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationOxxoDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationOxxoDisplayPreference.cs
index b502628147..458eab88d5 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationOxxoDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationOxxoDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationOxxoDisplayPreference : StripeEntity<PaymentMethodConfigurationOxxoDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationOxxoDisplayPreference : StripeEntity<Paym
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationOxxoDisplayPreference : StripeEntity<Paym
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationOxxoDisplayPreference : StripeEntity<Paym
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationP24.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationP24.cs
index 928eb3df86..db7612e3fb 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationP24.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationP24.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationP24 : StripeEntity<PaymentMethodConfigurationP24>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationP24 : StripeEntity<PaymentMethodConfigura
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationP24DisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationP24DisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationP24DisplayPreference.cs
index 19c41e7996..b839492bf9 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationP24DisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationP24DisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationP24DisplayPreference : StripeEntity<PaymentMethodConfigurationP24DisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationP24DisplayPreference : StripeEntity<Payme
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationP24DisplayPreference : StripeEntity<Payme
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationP24DisplayPreference : StripeEntity<Payme
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPayByBank.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPayByBank.cs
index 88a796b572..2dfe197eb7 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPayByBank.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPayByBank.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationPayByBank : StripeEntity<PaymentMethodConfigurationPayByBank>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationPayByBank : StripeEntity<PaymentMethodCon
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationPayByBankDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPayByBankDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPayByBankDisplayPreference.cs
index 5536f98a0e..8f1f8fcd75 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPayByBankDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPayByBankDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationPayByBankDisplayPreference : StripeEntity<PaymentMethodConfigurationPayByBankDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationPayByBankDisplayPreference : StripeEntity
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationPayByBankDisplayPreference : StripeEntity
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationPayByBankDisplayPreference : StripeEntity
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPaynow.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPaynow.cs
index 17e91fa980..1f019c22b7 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPaynow.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPaynow.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationPaynow : StripeEntity<PaymentMethodConfigurationPaynow>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationPaynow : StripeEntity<PaymentMethodConfig
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationPaynowDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPaynowDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPaynowDisplayPreference.cs
index c38aecd244..07f0a9f7de 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPaynowDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPaynowDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationPaynowDisplayPreference : StripeEntity<PaymentMethodConfigurationPaynowDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationPaynowDisplayPreference : StripeEntity<Pa
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationPaynowDisplayPreference : StripeEntity<Pa
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationPaynowDisplayPreference : StripeEntity<Pa
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPaypal.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPaypal.cs
index ecdeafb6ba..41ec06732a 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPaypal.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPaypal.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationPaypal : StripeEntity<PaymentMethodConfigurationPaypal>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationPaypal : StripeEntity<PaymentMethodConfig
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationPaypalDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPaypalDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPaypalDisplayPreference.cs
index 578fc02e5c..1d63b4a8ad 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPaypalDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPaypalDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationPaypalDisplayPreference : StripeEntity<PaymentMethodConfigurationPaypalDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationPaypalDisplayPreference : StripeEntity<Pa
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationPaypalDisplayPreference : StripeEntity<Pa
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationPaypalDisplayPreference : StripeEntity<Pa
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPromptpay.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPromptpay.cs
index ccda102833..45d9604f68 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPromptpay.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPromptpay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationPromptpay : StripeEntity<PaymentMethodConfigurationPromptpay>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationPromptpay : StripeEntity<PaymentMethodCon
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationPromptpayDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPromptpayDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPromptpayDisplayPreference.cs
index ef6e2c5e72..372a36b215 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPromptpayDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationPromptpayDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationPromptpayDisplayPreference : StripeEntity<PaymentMethodConfigurationPromptpayDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationPromptpayDisplayPreference : StripeEntity
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationPromptpayDisplayPreference : StripeEntity
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationPromptpayDisplayPreference : StripeEntity
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationRevolutPay.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationRevolutPay.cs
index a306e03bf3..46cff57bb1 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationRevolutPay.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationRevolutPay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationRevolutPay : StripeEntity<PaymentMethodConfigurationRevolutPay>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationRevolutPay : StripeEntity<PaymentMethodCo
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationRevolutPayDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationRevolutPayDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationRevolutPayDisplayPreference.cs
index 8d12c8e117..5f66127743 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationRevolutPayDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationRevolutPayDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationRevolutPayDisplayPreference : StripeEntity<PaymentMethodConfigurationRevolutPayDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationRevolutPayDisplayPreference : StripeEntit
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationRevolutPayDisplayPreference : StripeEntit
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationRevolutPayDisplayPreference : StripeEntit
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationSepaDebit.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationSepaDebit.cs
index 127dcafe3a..1c3513a0c8 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationSepaDebit.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationSepaDebit.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationSepaDebit : StripeEntity<PaymentMethodConfigurationSepaDebit>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationSepaDebit : StripeEntity<PaymentMethodCon
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationSepaDebitDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationSepaDebitDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationSepaDebitDisplayPreference.cs
index 3bbabb0f4a..d5c99b0658 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationSepaDebitDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationSepaDebitDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationSepaDebitDisplayPreference : StripeEntity<PaymentMethodConfigurationSepaDebitDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationSepaDebitDisplayPreference : StripeEntity
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationSepaDebitDisplayPreference : StripeEntity
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationSepaDebitDisplayPreference : StripeEntity
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationSofort.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationSofort.cs
index 1d0b6172bb..fc429fd23d 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationSofort.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationSofort.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationSofort : StripeEntity<PaymentMethodConfigurationSofort>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationSofort : StripeEntity<PaymentMethodConfig
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationSofortDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationSofortDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationSofortDisplayPreference.cs
index 28dceb13bc..637399a02a 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationSofortDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationSofortDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationSofortDisplayPreference : StripeEntity<PaymentMethodConfigurationSofortDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationSofortDisplayPreference : StripeEntity<Pa
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationSofortDisplayPreference : StripeEntity<Pa
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationSofortDisplayPreference : StripeEntity<Pa
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationSwish.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationSwish.cs
index 68a389732e..664d12953d 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationSwish.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationSwish.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationSwish : StripeEntity<PaymentMethodConfigurationSwish>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationSwish : StripeEntity<PaymentMethodConfigu
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationSwishDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationSwishDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationSwishDisplayPreference.cs
index 31b3272d4c..5ecdaddd16 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationSwishDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationSwishDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationSwishDisplayPreference : StripeEntity<PaymentMethodConfigurationSwishDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationSwishDisplayPreference : StripeEntity<Pay
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationSwishDisplayPreference : StripeEntity<Pay
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationSwishDisplayPreference : StripeEntity<Pay
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationTwint.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationTwint.cs
index 0c154522fa..5bc392baaa 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationTwint.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationTwint.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationTwint : StripeEntity<PaymentMethodConfigurationTwint>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationTwint : StripeEntity<PaymentMethodConfigu
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationTwintDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationTwintDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationTwintDisplayPreference.cs
index 7f1f618da6..dd6d4b7b97 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationTwintDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationTwintDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationTwintDisplayPreference : StripeEntity<PaymentMethodConfigurationTwintDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationTwintDisplayPreference : StripeEntity<Pay
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationTwintDisplayPreference : StripeEntity<Pay
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationTwintDisplayPreference : StripeEntity<Pay
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationUsBankAccount.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationUsBankAccount.cs
index b354b75f33..52b49d05f7 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationUsBankAccount.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationUsBankAccount.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationUsBankAccount : StripeEntity<PaymentMethodConfigurationUsBankAccount>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationUsBankAccount : StripeEntity<PaymentMetho
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationUsBankAccountDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationUsBankAccountDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationUsBankAccountDisplayPreference.cs
index 040f84962d..3c2c7b3256 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationUsBankAccountDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationUsBankAccountDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationUsBankAccountDisplayPreference : StripeEntity<PaymentMethodConfigurationUsBankAccountDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationUsBankAccountDisplayPreference : StripeEn
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationUsBankAccountDisplayPreference : StripeEn
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationUsBankAccountDisplayPreference : StripeEn
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationWechatPay.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationWechatPay.cs
index c1225cbc2e..c26df4457f 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationWechatPay.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationWechatPay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationWechatPay : StripeEntity<PaymentMethodConfigurationWechatPay>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationWechatPay : StripeEntity<PaymentMethodCon
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationWechatPayDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationWechatPayDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationWechatPayDisplayPreference.cs
index a0d569f8c5..8eebf5bb40 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationWechatPayDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationWechatPayDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationWechatPayDisplayPreference : StripeEntity<PaymentMethodConfigurationWechatPayDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationWechatPayDisplayPreference : StripeEntity
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationWechatPayDisplayPreference : StripeEntity
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationWechatPayDisplayPreference : StripeEntity
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationZip.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationZip.cs
index d515742920..596b06a605 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationZip.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationZip.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationZip : StripeEntity<PaymentMethodConfigurationZip>
     {
@@ -10,9 +13,15 @@ public class PaymentMethodConfigurationZip : StripeEntity<PaymentMethodConfigura
         /// <c>display_preference</c> is <c>on</c> and the payment method's capability is active.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public bool Available { get; set; }
 
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationZipDisplayPreference DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationZipDisplayPreference.cs b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationZipDisplayPreference.cs
index dc0ef765e8..05f14848e4 100644
--- a/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationZipDisplayPreference.cs
+++ b/src/Stripe.net/Entities/PaymentMethodConfigurations/PaymentMethodConfigurationZipDisplayPreference.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationZipDisplayPreference : StripeEntity<PaymentMethodConfigurationZipDisplayPreference>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationZipDisplayPreference : StripeEntity<Payme
         /// <c>false</c>, the parent configuration's default is used.
         /// </summary>
         [JsonProperty("overridable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overridable")]
+#endif
         public bool? Overridable { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodConfigurationZipDisplayPreference : StripeEntity<Payme
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodConfigurationZipDisplayPreference : StripeEntity<Payme
         /// One of: <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomain.cs b/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomain.cs
index b81daf5722..9ecf7cdb81 100644
--- a/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomain.cs
+++ b/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomain.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A payment method domain represents a web domain that you have registered with Stripe.
@@ -20,24 +23,36 @@ public class PaymentMethodDomain : StripeEntity<PaymentMethodDomain>, IHasId, IH
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Indicates the status of a specific payment method on a payment method domain.
         /// </summary>
         [JsonProperty("amazon_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amazon_pay")]
+#endif
         public PaymentMethodDomainAmazonPay AmazonPay { get; set; }
 
         /// <summary>
         /// Indicates the status of a specific payment method on a payment method domain.
         /// </summary>
         [JsonProperty("apple_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("apple_pay")]
+#endif
         public PaymentMethodDomainApplePay ApplePay { get; set; }
 
         /// <summary>
@@ -45,12 +60,19 @@ public class PaymentMethodDomain : StripeEntity<PaymentMethodDomain>, IHasId, IH
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// The domain name that this payment method domain object represents.
         /// </summary>
         [JsonProperty("domain_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("domain_name")]
+#endif
         public string DomainName { get; set; }
 
         /// <summary>
@@ -58,18 +80,27 @@ public class PaymentMethodDomain : StripeEntity<PaymentMethodDomain>, IHasId, IH
         /// methods that require a payment method domain will not appear in Elements.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         /// <summary>
         /// Indicates the status of a specific payment method on a payment method domain.
         /// </summary>
         [JsonProperty("google_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("google_pay")]
+#endif
         public PaymentMethodDomainGooglePay GooglePay { get; set; }
 
         /// <summary>
         /// Indicates the status of a specific payment method on a payment method domain.
         /// </summary>
         [JsonProperty("link")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("link")]
+#endif
         public PaymentMethodDomainLink Link { get; set; }
 
         /// <summary>
@@ -77,12 +108,18 @@ public class PaymentMethodDomain : StripeEntity<PaymentMethodDomain>, IHasId, IH
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
         /// Indicates the status of a specific payment method on a payment method domain.
         /// </summary>
         [JsonProperty("paypal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paypal")]
+#endif
         public PaymentMethodDomainPaypal Paypal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainAmazonPay.cs b/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainAmazonPay.cs
index c8ecde6356..682635691f 100644
--- a/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainAmazonPay.cs
+++ b/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainAmazonPay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodDomainAmazonPay : StripeEntity<PaymentMethodDomainAmazonPay>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodDomainAmazonPay : StripeEntity<PaymentMethodDomainAmaz
         /// One of: <c>active</c>, or <c>inactive</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodDomainAmazonPay : StripeEntity<PaymentMethodDomainAmaz
         /// method domain.
         /// </summary>
         [JsonProperty("status_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_details")]
+#endif
         public PaymentMethodDomainAmazonPayStatusDetails StatusDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainAmazonPayStatusDetails.cs b/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainAmazonPayStatusDetails.cs
index dc3e4784c8..337486d654 100644
--- a/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainAmazonPayStatusDetails.cs
+++ b/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainAmazonPayStatusDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodDomainAmazonPayStatusDetails : StripeEntity<PaymentMethodDomainAmazonPayStatusDetails>
     {
@@ -9,6 +12,9 @@ public class PaymentMethodDomainAmazonPayStatusDetails : StripeEntity<PaymentMet
         /// The error message associated with the status of the payment method on the domain.
         /// </summary>
         [JsonProperty("error_message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("error_message")]
+#endif
         public string ErrorMessage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainApplePay.cs b/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainApplePay.cs
index 79f4f1e8ee..a74a5c6577 100644
--- a/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainApplePay.cs
+++ b/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainApplePay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodDomainApplePay : StripeEntity<PaymentMethodDomainApplePay>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodDomainApplePay : StripeEntity<PaymentMethodDomainApple
         /// One of: <c>active</c>, or <c>inactive</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodDomainApplePay : StripeEntity<PaymentMethodDomainApple
         /// method domain.
         /// </summary>
         [JsonProperty("status_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_details")]
+#endif
         public PaymentMethodDomainApplePayStatusDetails StatusDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainApplePayStatusDetails.cs b/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainApplePayStatusDetails.cs
index 0b4f33c06b..3b7a550b29 100644
--- a/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainApplePayStatusDetails.cs
+++ b/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainApplePayStatusDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodDomainApplePayStatusDetails : StripeEntity<PaymentMethodDomainApplePayStatusDetails>
     {
@@ -9,6 +12,9 @@ public class PaymentMethodDomainApplePayStatusDetails : StripeEntity<PaymentMeth
         /// The error message associated with the status of the payment method on the domain.
         /// </summary>
         [JsonProperty("error_message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("error_message")]
+#endif
         public string ErrorMessage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainGooglePay.cs b/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainGooglePay.cs
index d936ac6be1..e2679b3470 100644
--- a/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainGooglePay.cs
+++ b/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainGooglePay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodDomainGooglePay : StripeEntity<PaymentMethodDomainGooglePay>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodDomainGooglePay : StripeEntity<PaymentMethodDomainGoog
         /// One of: <c>active</c>, or <c>inactive</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodDomainGooglePay : StripeEntity<PaymentMethodDomainGoog
         /// method domain.
         /// </summary>
         [JsonProperty("status_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_details")]
+#endif
         public PaymentMethodDomainGooglePayStatusDetails StatusDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainGooglePayStatusDetails.cs b/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainGooglePayStatusDetails.cs
index 9b5f2e7c13..2adfdccc06 100644
--- a/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainGooglePayStatusDetails.cs
+++ b/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainGooglePayStatusDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodDomainGooglePayStatusDetails : StripeEntity<PaymentMethodDomainGooglePayStatusDetails>
     {
@@ -9,6 +12,9 @@ public class PaymentMethodDomainGooglePayStatusDetails : StripeEntity<PaymentMet
         /// The error message associated with the status of the payment method on the domain.
         /// </summary>
         [JsonProperty("error_message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("error_message")]
+#endif
         public string ErrorMessage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainLink.cs b/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainLink.cs
index 4dbc02785c..1a6798de06 100644
--- a/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainLink.cs
+++ b/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainLink.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodDomainLink : StripeEntity<PaymentMethodDomainLink>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodDomainLink : StripeEntity<PaymentMethodDomainLink>
         /// One of: <c>active</c>, or <c>inactive</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodDomainLink : StripeEntity<PaymentMethodDomainLink>
         /// method domain.
         /// </summary>
         [JsonProperty("status_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_details")]
+#endif
         public PaymentMethodDomainLinkStatusDetails StatusDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainLinkStatusDetails.cs b/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainLinkStatusDetails.cs
index 4868f98371..1fa5c8674b 100644
--- a/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainLinkStatusDetails.cs
+++ b/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainLinkStatusDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodDomainLinkStatusDetails : StripeEntity<PaymentMethodDomainLinkStatusDetails>
     {
@@ -9,6 +12,9 @@ public class PaymentMethodDomainLinkStatusDetails : StripeEntity<PaymentMethodDo
         /// The error message associated with the status of the payment method on the domain.
         /// </summary>
         [JsonProperty("error_message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("error_message")]
+#endif
         public string ErrorMessage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainPaypal.cs b/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainPaypal.cs
index cead61c29b..b48a0765bf 100644
--- a/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainPaypal.cs
+++ b/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainPaypal.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodDomainPaypal : StripeEntity<PaymentMethodDomainPaypal>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodDomainPaypal : StripeEntity<PaymentMethodDomainPaypal>
         /// One of: <c>active</c>, or <c>inactive</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodDomainPaypal : StripeEntity<PaymentMethodDomainPaypal>
         /// method domain.
         /// </summary>
         [JsonProperty("status_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_details")]
+#endif
         public PaymentMethodDomainPaypalStatusDetails StatusDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainPaypalStatusDetails.cs b/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainPaypalStatusDetails.cs
index 0342f2b813..ae8d339c15 100644
--- a/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainPaypalStatusDetails.cs
+++ b/src/Stripe.net/Entities/PaymentMethodDomains/PaymentMethodDomainPaypalStatusDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodDomainPaypalStatusDetails : StripeEntity<PaymentMethodDomainPaypalStatusDetails>
     {
@@ -9,6 +12,9 @@ public class PaymentMethodDomainPaypalStatusDetails : StripeEntity<PaymentMethod
         /// The error message associated with the status of the payment method on the domain.
         /// </summary>
         [JsonProperty("error_message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("error_message")]
+#endif
         public string ErrorMessage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethod.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethod.cs
index 7faa92748f..bdaa2d07c0 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethod.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethod.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// PaymentMethod objects represent your customer's payment instruments. You can use them
@@ -16,30 +19,51 @@ namespace Stripe
     /// Methods</a> and <a href="https://stripe.com/docs/payments/more-payment-scenarios">More
     /// Payment Scenarios</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class PaymentMethod : StripeEntity<PaymentMethod>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         [JsonProperty("acss_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acss_debit")]
+#endif
         public PaymentMethodAcssDebit AcssDebit { get; set; }
 
         [JsonProperty("affirm")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("affirm")]
+#endif
         public PaymentMethodAffirm Affirm { get; set; }
 
         [JsonProperty("afterpay_clearpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("afterpay_clearpay")]
+#endif
         public PaymentMethodAfterpayClearpay AfterpayClearpay { get; set; }
 
         [JsonProperty("alipay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alipay")]
+#endif
         public PaymentMethodAlipay Alipay { get; set; }
 
         /// <summary>
@@ -50,39 +74,75 @@ public class PaymentMethod : StripeEntity<PaymentMethod>, IHasId, IHasMetadata,
         /// One of: <c>always</c>, <c>limited</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("allow_redisplay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allow_redisplay")]
+#endif
         public string AllowRedisplay { get; set; }
 
         [JsonProperty("alma")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alma")]
+#endif
         public PaymentMethodAlma Alma { get; set; }
 
         [JsonProperty("amazon_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amazon_pay")]
+#endif
         public PaymentMethodAmazonPay AmazonPay { get; set; }
 
         [JsonProperty("au_becs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("au_becs_debit")]
+#endif
         public PaymentMethodAuBecsDebit AuBecsDebit { get; set; }
 
         [JsonProperty("bacs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bacs_debit")]
+#endif
         public PaymentMethodBacsDebit BacsDebit { get; set; }
 
         [JsonProperty("bancontact")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bancontact")]
+#endif
         public PaymentMethodBancontact Bancontact { get; set; }
 
         [JsonProperty("billing_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_details")]
+#endif
         public PaymentMethodBillingDetails BillingDetails { get; set; }
 
         [JsonProperty("blik")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("blik")]
+#endif
         public PaymentMethodBlik Blik { get; set; }
 
         [JsonProperty("boleto")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("boleto")]
+#endif
         public PaymentMethodBoleto Boleto { get; set; }
 
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public PaymentMethodCard Card { get; set; }
 
         [JsonProperty("card_present")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_present")]
+#endif
         public PaymentMethodCardPresent CardPresent { get; set; }
 
         [JsonProperty("cashapp")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cashapp")]
+#endif
         public PaymentMethodCashapp Cashapp { get; set; }
 
         /// <summary>
@@ -90,6 +150,10 @@ public class PaymentMethod : StripeEntity<PaymentMethod>, IHasId, IHasMetadata,
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         #region Expandable Customer
@@ -100,6 +164,9 @@ public class PaymentMethod : StripeEntity<PaymentMethod>, IHasId, IHasMetadata,
         /// the PaymentMethod has not been saved to a Customer.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerId
         {
             get => this.InternalCustomer?.Id;
@@ -114,6 +181,9 @@ public string CustomerId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Customer Customer
         {
             get => this.InternalCustomer?.ExpandedObject;
@@ -122,43 +192,83 @@ public Customer Customer
 
         [JsonProperty("customer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Customer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Customer>))]
+#endif
         internal ExpandableField<Customer> InternalCustomer { get; set; }
         #endregion
 
         [JsonProperty("customer_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_balance")]
+#endif
         public PaymentMethodCustomerBalance CustomerBalance { get; set; }
 
         [JsonProperty("eps")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eps")]
+#endif
         public PaymentMethodEps Eps { get; set; }
 
         [JsonProperty("fpx")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fpx")]
+#endif
         public PaymentMethodFpx Fpx { get; set; }
 
         [JsonProperty("giropay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("giropay")]
+#endif
         public PaymentMethodGiropay Giropay { get; set; }
 
         [JsonProperty("grabpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("grabpay")]
+#endif
         public PaymentMethodGrabpay Grabpay { get; set; }
 
         [JsonProperty("ideal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ideal")]
+#endif
         public PaymentMethodIdeal Ideal { get; set; }
 
         [JsonProperty("interac_present")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interac_present")]
+#endif
         public PaymentMethodInteracPresent InteracPresent { get; set; }
 
         [JsonProperty("kakao_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kakao_pay")]
+#endif
         public PaymentMethodKakaoPay KakaoPay { get; set; }
 
         [JsonProperty("klarna")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("klarna")]
+#endif
         public PaymentMethodKlarna Klarna { get; set; }
 
         [JsonProperty("konbini")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("konbini")]
+#endif
         public PaymentMethodKonbini Konbini { get; set; }
 
         [JsonProperty("kr_card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kr_card")]
+#endif
         public PaymentMethodKrCard KrCard { get; set; }
 
         [JsonProperty("link")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("link")]
+#endif
         public PaymentMethodLink Link { get; set; }
 
         /// <summary>
@@ -166,6 +276,9 @@ public Customer Customer
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -174,39 +287,75 @@ public Customer Customer
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         [JsonProperty("mobilepay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mobilepay")]
+#endif
         public PaymentMethodMobilepay Mobilepay { get; set; }
 
         [JsonProperty("multibanco")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("multibanco")]
+#endif
         public PaymentMethodMultibanco Multibanco { get; set; }
 
         [JsonProperty("naver_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("naver_pay")]
+#endif
         public PaymentMethodNaverPay NaverPay { get; set; }
 
         [JsonProperty("oxxo")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("oxxo")]
+#endif
         public PaymentMethodOxxo Oxxo { get; set; }
 
         [JsonProperty("p24")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("p24")]
+#endif
         public PaymentMethodP24 P24 { get; set; }
 
         [JsonProperty("pay_by_bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_by_bank")]
+#endif
         public PaymentMethodPayByBank PayByBank { get; set; }
 
         [JsonProperty("payco")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payco")]
+#endif
         public PaymentMethodPayco Payco { get; set; }
 
         [JsonProperty("paynow")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paynow")]
+#endif
         public PaymentMethodPaynow Paynow { get; set; }
 
         [JsonProperty("paypal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paypal")]
+#endif
         public PaymentMethodPaypal Paypal { get; set; }
 
         [JsonProperty("pix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pix")]
+#endif
         public PaymentMethodPix Pix { get; set; }
 
         [JsonProperty("promptpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promptpay")]
+#endif
         public PaymentMethodPromptpay Promptpay { get; set; }
 
         /// <summary>
@@ -215,24 +364,45 @@ public Customer Customer
         /// information.
         /// </summary>
         [JsonProperty("radar_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("radar_options")]
+#endif
         public PaymentMethodRadarOptions RadarOptions { get; set; }
 
         [JsonProperty("revolut_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("revolut_pay")]
+#endif
         public PaymentMethodRevolutPay RevolutPay { get; set; }
 
         [JsonProperty("samsung_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("samsung_pay")]
+#endif
         public PaymentMethodSamsungPay SamsungPay { get; set; }
 
         [JsonProperty("sepa_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_debit")]
+#endif
         public PaymentMethodSepaDebit SepaDebit { get; set; }
 
         [JsonProperty("sofort")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sofort")]
+#endif
         public PaymentMethodSofort Sofort { get; set; }
 
         [JsonProperty("swish")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("swish")]
+#endif
         public PaymentMethodSwish Swish { get; set; }
 
         [JsonProperty("twint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("twint")]
+#endif
         public PaymentMethodTwint Twint { get; set; }
 
         /// <summary>
@@ -251,15 +421,27 @@ public Customer Customer
         /// <c>us_bank_account</c>, <c>wechat_pay</c>, or <c>zip</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public PaymentMethodUsBankAccount UsBankAccount { get; set; }
 
         [JsonProperty("wechat_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wechat_pay")]
+#endif
         public PaymentMethodWechatPay WechatPay { get; set; }
 
         [JsonProperty("zip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("zip")]
+#endif
         public PaymentMethodZip Zip { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodAcssDebit.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodAcssDebit.cs
index b7eb555386..12a7c5e07f 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodAcssDebit.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodAcssDebit.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodAcssDebit : StripeEntity<PaymentMethodAcssDebit>
     {
@@ -9,6 +12,9 @@ public class PaymentMethodAcssDebit : StripeEntity<PaymentMethodAcssDebit>
         /// Name of the bank associated with the bank account.
         /// </summary>
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         /// <summary>
@@ -16,24 +22,36 @@ public class PaymentMethodAcssDebit : StripeEntity<PaymentMethodAcssDebit>
         /// whether two bank accounts are the same.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
         /// Institution number of the bank account.
         /// </summary>
         [JsonProperty("institution_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("institution_number")]
+#endif
         public string InstitutionNumber { get; set; }
 
         /// <summary>
         /// Last four digits of the bank account number.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
         /// Transit number of the bank account.
         /// </summary>
         [JsonProperty("transit_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transit_number")]
+#endif
         public string TransitNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodAuBecsDebit.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodAuBecsDebit.cs
index 04a4ede013..5ae9107400 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodAuBecsDebit.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodAuBecsDebit.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodAuBecsDebit : StripeEntity<PaymentMethodAuBecsDebit>
     {
@@ -9,6 +12,9 @@ public class PaymentMethodAuBecsDebit : StripeEntity<PaymentMethodAuBecsDebit>
         /// Six-digit number identifying bank and branch associated with this bank account.
         /// </summary>
         [JsonProperty("bsb_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bsb_number")]
+#endif
         public string BsbNumber { get; set; }
 
         /// <summary>
@@ -16,12 +22,18 @@ public class PaymentMethodAuBecsDebit : StripeEntity<PaymentMethodAuBecsDebit>
         /// whether two bank accounts are the same.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
         /// Last four digits of the bank account number.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodBacsDebit.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodBacsDebit.cs
index f592a79168..84c26f4d85 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodBacsDebit.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodBacsDebit.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodBacsDebit : StripeEntity<PaymentMethodBacsDebit>
     {
@@ -10,18 +13,27 @@ public class PaymentMethodBacsDebit : StripeEntity<PaymentMethodBacsDebit>
         /// whether two bank accounts are the same.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
         /// Last four digits of the bank account number.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
         /// Sort code of the bank account. (e.g., <c>10-20-30</c>).
         /// </summary>
         [JsonProperty("sort_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sort_code")]
+#endif
         public string SortCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodBillingDetails.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodBillingDetails.cs
index d0dca77240..228dab5f56 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodBillingDetails.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodBillingDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodBillingDetails : StripeEntity<PaymentMethodBillingDetails>
     {
@@ -9,24 +12,36 @@ public class PaymentMethodBillingDetails : StripeEntity<PaymentMethodBillingDeta
         /// Billing address.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public Address Address { get; set; }
 
         /// <summary>
         /// Email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// Full name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// Billing phone number (including extension).
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodBoleto.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodBoleto.cs
index 83005f7dbf..110d43c194 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodBoleto.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodBoleto.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodBoleto : StripeEntity<PaymentMethodBoleto>
     {
@@ -9,6 +12,9 @@ public class PaymentMethodBoleto : StripeEntity<PaymentMethodBoleto>
         /// Uniquely identifies the customer tax id (CNPJ or CPF).
         /// </summary>
         [JsonProperty("tax_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_id")]
+#endif
         public string TaxId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCard.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCard.cs
index 069b1f8a88..a55c108150 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCard.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCard.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodCard : StripeEntity<PaymentMethodCard>
     {
@@ -11,12 +14,18 @@ public class PaymentMethodCard : StripeEntity<PaymentMethodCard>
         /// <c>unknown</c>.
         /// </summary>
         [JsonProperty("brand")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brand")]
+#endif
         public string Brand { get; set; }
 
         /// <summary>
         /// Checks on Card address and CVC if provided.
         /// </summary>
         [JsonProperty("checks")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("checks")]
+#endif
         public PaymentMethodCardChecks Checks { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodCard : StripeEntity<PaymentMethodCard>
         /// to get a sense of the international breakdown of cards you've collected.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -31,6 +43,9 @@ public class PaymentMethodCard : StripeEntity<PaymentMethodCard>
         /// only and not typically available in standard API requests.).
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -41,18 +56,27 @@ public class PaymentMethodCard : StripeEntity<PaymentMethodCard>
         /// contain more values in the future.
         /// </summary>
         [JsonProperty("display_brand")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_brand")]
+#endif
         public string DisplayBrand { get; set; }
 
         /// <summary>
         /// Two-digit number representing the card's expiration month.
         /// </summary>
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public long ExpMonth { get; set; }
 
         /// <summary>
         /// Four-digit number representing the card's expiration year.
         /// </summary>
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public long ExpYear { get; set; }
 
         /// <summary>
@@ -65,6 +89,9 @@ public class PaymentMethodCard : StripeEntity<PaymentMethodCard>
         /// fingerprints for the same card---one for India and one for the rest of the world.</em>.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
@@ -72,12 +99,18 @@ public class PaymentMethodCard : StripeEntity<PaymentMethodCard>
         /// <c>unknown</c>.
         /// </summary>
         [JsonProperty("funding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding")]
+#endif
         public string Funding { get; set; }
 
         /// <summary>
         /// Details of the original PaymentMethod that created this object.
         /// </summary>
         [JsonProperty("generated_from")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("generated_from")]
+#endif
         public PaymentMethodCardGeneratedFrom GeneratedFrom { get; set; }
 
         /// <summary>
@@ -85,6 +118,9 @@ public class PaymentMethodCard : StripeEntity<PaymentMethodCard>
         /// available in standard API requests.).
         /// </summary>
         [JsonProperty("iin")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iin")]
+#endif
         public string Iin { get; set; }
 
         /// <summary>
@@ -92,18 +128,27 @@ public class PaymentMethodCard : StripeEntity<PaymentMethodCard>
         /// in standard API requests.).
         /// </summary>
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public string Issuer { get; set; }
 
         /// <summary>
         /// The last four digits of the card.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
         /// Contains information about card networks that can be used to process the payment.
         /// </summary>
         [JsonProperty("networks")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("networks")]
+#endif
         public PaymentMethodCardNetworks Networks { get; set; }
 
         /// <summary>
@@ -111,18 +156,27 @@ public class PaymentMethodCard : StripeEntity<PaymentMethodCard>
         /// One of: <c>regulated</c>, or <c>unregulated</c>.
         /// </summary>
         [JsonProperty("regulated_status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("regulated_status")]
+#endif
         public string RegulatedStatus { get; set; }
 
         /// <summary>
         /// Contains details on how this Card may be used for 3D Secure authentication.
         /// </summary>
         [JsonProperty("three_d_secure_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("three_d_secure_usage")]
+#endif
         public PaymentMethodCardThreeDSecureUsage ThreeDSecureUsage { get; set; }
 
         /// <summary>
         /// If this Card is part of a card wallet, this contains the details of the card wallet.
         /// </summary>
         [JsonProperty("wallet")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wallet")]
+#endif
         public PaymentMethodCardWallet Wallet { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardChecks.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardChecks.cs
index 80c8bbf94b..7550788549 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardChecks.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardChecks.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodCardChecks : StripeEntity<PaymentMethodCardChecks>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodCardChecks : StripeEntity<PaymentMethodCardChecks>
         /// <c>unavailable</c>, or <c>unchecked</c>.
         /// </summary>
         [JsonProperty("address_line1_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_line1_check")]
+#endif
         public string AddressLine1Check { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodCardChecks : StripeEntity<PaymentMethodCardChecks>
         /// <c>fail</c>, <c>unavailable</c>, or <c>unchecked</c>.
         /// </summary>
         [JsonProperty("address_postal_code_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_postal_code_check")]
+#endif
         public string AddressPostalCodeCheck { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentMethodCardChecks : StripeEntity<PaymentMethodCardChecks>
         /// <c>unavailable</c>, or <c>unchecked</c>.
         /// </summary>
         [JsonProperty("cvc_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cvc_check")]
+#endif
         public string CvcCheck { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardGeneratedFrom.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardGeneratedFrom.cs
index b0797062cd..835d84970b 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardGeneratedFrom.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardGeneratedFrom.cs
@@ -3,19 +3,31 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class PaymentMethodCardGeneratedFrom : StripeEntity<PaymentMethodCardGeneratedFrom>
     {
         /// <summary>
         /// The charge that created this object.
         /// </summary>
         [JsonProperty("charge")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("charge")]
+#endif
         public string Charge { get; set; }
 
         /// <summary>
         /// Transaction-specific details of the payment method used in the payment.
         /// </summary>
         [JsonProperty("payment_method_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_details")]
+#endif
         public PaymentMethodCardGeneratedFromPaymentMethodDetails PaymentMethodDetails { get; set; }
 
         #region Expandable SetupAttempt
@@ -25,6 +37,9 @@ public class PaymentMethodCardGeneratedFrom : StripeEntity<PaymentMethodCardGene
         /// The ID of the SetupAttempt that generated this PaymentMethod, if any.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string SetupAttemptId
         {
             get => this.InternalSetupAttempt?.Id;
@@ -38,6 +53,9 @@ public string SetupAttemptId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public SetupAttempt SetupAttempt
         {
             get => this.InternalSetupAttempt?.ExpandedObject;
@@ -46,6 +64,10 @@ public SetupAttempt SetupAttempt
 
         [JsonProperty("setup_attempt")]
         [JsonConverter(typeof(ExpandableFieldConverter<SetupAttempt>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_attempt")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<SetupAttempt>))]
+#endif
         internal ExpandableField<SetupAttempt> InternalSetupAttempt { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardGeneratedFromPaymentMethodDetails.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardGeneratedFromPaymentMethodDetails.cs
index 606a9da5d0..009ba1bb2e 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardGeneratedFromPaymentMethodDetails.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardGeneratedFromPaymentMethodDetails.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodCardGeneratedFromPaymentMethodDetails : StripeEntity<PaymentMethodCardGeneratedFromPaymentMethodDetails>
     {
         [JsonProperty("card_present")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_present")]
+#endif
         public PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresent CardPresent { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class PaymentMethodCardGeneratedFromPaymentMethodDetails : StripeEntity<P
         /// generated this <c>card</c> payment method. Always <c>card_present</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresent.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresent.cs
index 2599429db6..ddcf678b11 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresent.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresent.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresent : StripeEntity<PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresent>
     {
@@ -12,6 +15,9 @@ public class PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresent : Str
         /// The authorized amount.
         /// </summary>
         [JsonProperty("amount_authorized")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_authorized")]
+#endif
         public long? AmountAuthorized { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresent : Str
         /// <c>unknown</c>.
         /// </summary>
         [JsonProperty("brand")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brand")]
+#endif
         public string Brand { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresent : Str
         /// identifies the specific program or product associated with a card.
         /// </summary>
         [JsonProperty("brand_product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brand_product")]
+#endif
         public string BrandProduct { get; set; }
 
         /// <summary>
@@ -35,6 +47,10 @@ public class PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresent : Str
         /// </summary>
         [JsonProperty("capture_before")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_before")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime CaptureBefore { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -46,6 +62,9 @@ public class PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresent : Str
         /// payments, such as those made with Apple Pay and Google Pay.
         /// </summary>
         [JsonProperty("cardholder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder_name")]
+#endif
         public string CardholderName { get; set; }
 
         /// <summary>
@@ -53,6 +72,9 @@ public class PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresent : Str
         /// to get a sense of the international breakdown of cards you've collected.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -60,24 +82,36 @@ public class PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresent : Str
         /// only and not typically available in standard API requests.).
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// Authorization response cryptogram.
         /// </summary>
         [JsonProperty("emv_auth_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("emv_auth_data")]
+#endif
         public string EmvAuthData { get; set; }
 
         /// <summary>
         /// Two-digit number representing the card's expiration month.
         /// </summary>
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public long ExpMonth { get; set; }
 
         /// <summary>
         /// Four-digit number representing the card's expiration year.
         /// </summary>
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public long ExpYear { get; set; }
 
         /// <summary>
@@ -90,6 +124,9 @@ public class PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresent : Str
         /// fingerprints for the same card---one for India and one for the rest of the world.</em>.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
@@ -97,6 +134,9 @@ public class PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresent : Str
         /// <c>unknown</c>.
         /// </summary>
         [JsonProperty("funding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding")]
+#endif
         public string Funding { get; set; }
 
         /// <summary>
@@ -105,6 +145,9 @@ public class PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresent : Str
         /// generate a card PaymentMethod.
         /// </summary>
         [JsonProperty("generated_card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("generated_card")]
+#endif
         public string GeneratedCard { get; set; }
 
         /// <summary>
@@ -112,6 +155,9 @@ public class PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresent : Str
         /// available in standard API requests.).
         /// </summary>
         [JsonProperty("iin")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iin")]
+#endif
         public string Iin { get; set; }
 
         /// <summary>
@@ -120,6 +166,9 @@ public class PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresent : Str
         /// href="https://stripe.com/docs/api/payment_intents/create#create_payment_intent-payment_method_options-card_present-request_incremental_authorization_support">request_incremental_authorization_support</a>.
         /// </summary>
         [JsonProperty("incremental_authorization_supported")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("incremental_authorization_supported")]
+#endif
         public bool IncrementalAuthorizationSupported { get; set; }
 
         /// <summary>
@@ -127,12 +176,18 @@ public class PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresent : Str
         /// in standard API requests.).
         /// </summary>
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public string Issuer { get; set; }
 
         /// <summary>
         /// The last four digits of the card.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
@@ -142,6 +197,9 @@ public class PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresent : Str
         /// <c>visa</c>, or <c>unknown</c>.
         /// </summary>
         [JsonProperty("network")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network")]
+#endif
         public string Network { get; set; }
 
         /// <summary>
@@ -151,24 +209,36 @@ public class PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresent : Str
         /// network in the authorization response, and null otherwise.
         /// </summary>
         [JsonProperty("network_transaction_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network_transaction_id")]
+#endif
         public string NetworkTransactionId { get; set; }
 
         /// <summary>
         /// Details about payments collected offline.
         /// </summary>
         [JsonProperty("offline")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("offline")]
+#endif
         public PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresentOffline Offline { get; set; }
 
         /// <summary>
         /// Defines whether the authorized amount can be over-captured or not.
         /// </summary>
         [JsonProperty("overcapture_supported")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("overcapture_supported")]
+#endif
         public bool OvercaptureSupported { get; set; }
 
         /// <summary>
         /// EMV tag 5F2D. Preferred languages specified by the integrated circuit chip.
         /// </summary>
         [JsonProperty("preferred_locales")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_locales")]
+#endif
         public List<string> PreferredLocales { get; set; }
 
         /// <summary>
@@ -177,6 +247,9 @@ public class PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresent : Str
         /// <c>magnetic_stripe_fallback</c>, or <c>magnetic_stripe_track2</c>.
         /// </summary>
         [JsonProperty("read_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("read_method")]
+#endif
         public string ReadMethod { get; set; }
 
         /// <summary>
@@ -184,9 +257,15 @@ public class PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresent : Str
         /// transactions.
         /// </summary>
         [JsonProperty("receipt")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("receipt")]
+#endif
         public PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresentReceipt Receipt { get; set; }
 
         [JsonProperty("wallet")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wallet")]
+#endif
         public PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresentWallet Wallet { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresentOffline.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresentOffline.cs
index 514af823c5..7a2df4e577 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresentOffline.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresentOffline.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresentOffline : StripeEntity<PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresentOffline>
     {
@@ -12,12 +15,19 @@ public class PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresentOfflin
         /// </summary>
         [JsonProperty("stored_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("stored_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? StoredAt { get; set; }
 
         /// <summary>
         /// The method used to process this payment method offline. Only deferred is allowed.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresentReceipt.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresentReceipt.cs
index 8db4e16651..7854d1fd9c 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresentReceipt.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresentReceipt.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresentReceipt : StripeEntity<PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresentReceipt>
     {
@@ -10,30 +13,45 @@ public class PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresentReceip
         /// One of: <c>checking</c>, <c>credit</c>, <c>prepaid</c>, or <c>unknown</c>.
         /// </summary>
         [JsonProperty("account_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_type")]
+#endif
         public string AccountType { get; set; }
 
         /// <summary>
         /// EMV tag 9F26, cryptogram generated by the integrated circuit chip.
         /// </summary>
         [JsonProperty("application_cryptogram")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_cryptogram")]
+#endif
         public string ApplicationCryptogram { get; set; }
 
         /// <summary>
         /// Mnenomic of the Application Identifier.
         /// </summary>
         [JsonProperty("application_preferred_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_preferred_name")]
+#endif
         public string ApplicationPreferredName { get; set; }
 
         /// <summary>
         /// Identifier for this transaction.
         /// </summary>
         [JsonProperty("authorization_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("authorization_code")]
+#endif
         public string AuthorizationCode { get; set; }
 
         /// <summary>
         /// EMV tag 8A. A code returned by the card issuer.
         /// </summary>
         [JsonProperty("authorization_response_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("authorization_response_code")]
+#endif
         public string AuthorizationResponseCode { get; set; }
 
         /// <summary>
@@ -42,24 +60,36 @@ public class PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresentReceip
         /// <c>offline_pin_and_signature</c>, <c>online_pin</c>, or <c>signature</c>.
         /// </summary>
         [JsonProperty("cardholder_verification_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder_verification_method")]
+#endif
         public string CardholderVerificationMethod { get; set; }
 
         /// <summary>
         /// EMV tag 84. Similar to the application identifier stored on the integrated circuit chip.
         /// </summary>
         [JsonProperty("dedicated_file_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dedicated_file_name")]
+#endif
         public string DedicatedFileName { get; set; }
 
         /// <summary>
         /// The outcome of a series of EMV functions performed by the card reader.
         /// </summary>
         [JsonProperty("terminal_verification_results")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("terminal_verification_results")]
+#endif
         public string TerminalVerificationResults { get; set; }
 
         /// <summary>
         /// An indication of various EMV functions performed during the transaction.
         /// </summary>
         [JsonProperty("transaction_status_information")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_status_information")]
+#endif
         public string TransactionStatusInformation { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresentWallet.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresentWallet.cs
index 9502f19aa2..54d502a3d7 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresentWallet.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresentWallet.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresentWallet : StripeEntity<PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresentWallet>
     {
@@ -11,6 +14,9 @@ public class PaymentMethodCardGeneratedFromPaymentMethodDetailsCardPresentWallet
         /// One of: <c>apple_pay</c>, <c>google_pay</c>, <c>samsung_pay</c>, or <c>unknown</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardNetworks.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardNetworks.cs
index c3c00f9ef2..e73893e019 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardNetworks.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardNetworks.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodCardNetworks : StripeEntity<PaymentMethodCardNetworks>
     {
@@ -11,6 +14,9 @@ public class PaymentMethodCardNetworks : StripeEntity<PaymentMethodCardNetworks>
         /// href="https://stripe.com/api/payment_intents/confirm#confirm_payment_intent-payment_method_options-card-network">payment_method_options.card.network</a>.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public List<string> Available { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class PaymentMethodCardNetworks : StripeEntity<PaymentMethodCardNetworks>
         /// valid for the card.
         /// </summary>
         [JsonProperty("preferred")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred")]
+#endif
         public string Preferred { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardPresent.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardPresent.cs
index bf253120d0..c790fff811 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardPresent.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardPresent.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodCardPresent : StripeEntity<PaymentMethodCardPresent>
     {
@@ -12,6 +15,9 @@ public class PaymentMethodCardPresent : StripeEntity<PaymentMethodCardPresent>
         /// <c>unknown</c>.
         /// </summary>
         [JsonProperty("brand")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brand")]
+#endif
         public string Brand { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class PaymentMethodCardPresent : StripeEntity<PaymentMethodCardPresent>
         /// identifies the specific program or product associated with a card.
         /// </summary>
         [JsonProperty("brand_product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brand_product")]
+#endif
         public string BrandProduct { get; set; }
 
         /// <summary>
@@ -30,6 +39,9 @@ public class PaymentMethodCardPresent : StripeEntity<PaymentMethodCardPresent>
         /// payments, such as those made with Apple Pay and Google Pay.
         /// </summary>
         [JsonProperty("cardholder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder_name")]
+#endif
         public string CardholderName { get; set; }
 
         /// <summary>
@@ -37,6 +49,9 @@ public class PaymentMethodCardPresent : StripeEntity<PaymentMethodCardPresent>
         /// to get a sense of the international breakdown of cards you've collected.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -44,18 +59,27 @@ public class PaymentMethodCardPresent : StripeEntity<PaymentMethodCardPresent>
         /// only and not typically available in standard API requests.).
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// Two-digit number representing the card's expiration month.
         /// </summary>
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public long ExpMonth { get; set; }
 
         /// <summary>
         /// Four-digit number representing the card's expiration year.
         /// </summary>
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public long ExpYear { get; set; }
 
         /// <summary>
@@ -68,6 +92,9 @@ public class PaymentMethodCardPresent : StripeEntity<PaymentMethodCardPresent>
         /// fingerprints for the same card---one for India and one for the rest of the world.</em>.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
@@ -75,6 +102,9 @@ public class PaymentMethodCardPresent : StripeEntity<PaymentMethodCardPresent>
         /// <c>unknown</c>.
         /// </summary>
         [JsonProperty("funding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding")]
+#endif
         public string Funding { get; set; }
 
         /// <summary>
@@ -82,6 +112,9 @@ public class PaymentMethodCardPresent : StripeEntity<PaymentMethodCardPresent>
         /// available in standard API requests.).
         /// </summary>
         [JsonProperty("iin")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iin")]
+#endif
         public string Iin { get; set; }
 
         /// <summary>
@@ -89,30 +122,45 @@ public class PaymentMethodCardPresent : StripeEntity<PaymentMethodCardPresent>
         /// in standard API requests.).
         /// </summary>
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public string Issuer { get; set; }
 
         /// <summary>
         /// The last four digits of the card.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
         /// Contains information about card networks that can be used to process the payment.
         /// </summary>
         [JsonProperty("networks")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("networks")]
+#endif
         public PaymentMethodCardPresentNetworks Networks { get; set; }
 
         /// <summary>
         /// Details about payment methods collected offline.
         /// </summary>
         [JsonProperty("offline")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("offline")]
+#endif
         public PaymentMethodCardPresentOffline Offline { get; set; }
 
         /// <summary>
         /// EMV tag 5F2D. Preferred languages specified by the integrated circuit chip.
         /// </summary>
         [JsonProperty("preferred_locales")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_locales")]
+#endif
         public List<string> PreferredLocales { get; set; }
 
         /// <summary>
@@ -121,9 +169,15 @@ public class PaymentMethodCardPresent : StripeEntity<PaymentMethodCardPresent>
         /// <c>magnetic_stripe_fallback</c>, or <c>magnetic_stripe_track2</c>.
         /// </summary>
         [JsonProperty("read_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("read_method")]
+#endif
         public string ReadMethod { get; set; }
 
         [JsonProperty("wallet")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wallet")]
+#endif
         public PaymentMethodCardPresentWallet Wallet { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardPresentNetworks.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardPresentNetworks.cs
index e87f226c11..fedf096100 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardPresentNetworks.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardPresentNetworks.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodCardPresentNetworks : StripeEntity<PaymentMethodCardPresentNetworks>
     {
@@ -11,12 +14,18 @@ public class PaymentMethodCardPresentNetworks : StripeEntity<PaymentMethodCardPr
         /// href="https://stripe.com/api/payment_intents/confirm#confirm_payment_intent-payment_method_options-card-network">payment_method_options.card.network</a>.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public List<string> Available { get; set; }
 
         /// <summary>
         /// The preferred network for the card.
         /// </summary>
         [JsonProperty("preferred")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred")]
+#endif
         public string Preferred { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardPresentOffline.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardPresentOffline.cs
index d48b01ea9c..b2d341bcfa 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardPresentOffline.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardPresentOffline.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodCardPresentOffline : StripeEntity<PaymentMethodCardPresentOffline>
     {
@@ -12,12 +15,19 @@ public class PaymentMethodCardPresentOffline : StripeEntity<PaymentMethodCardPre
         /// </summary>
         [JsonProperty("stored_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("stored_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? StoredAt { get; set; }
 
         /// <summary>
         /// The method used to process this payment method offline. Only deferred is allowed.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardPresentWallet.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardPresentWallet.cs
index 8458ca9cc8..f6215d0fa9 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardPresentWallet.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardPresentWallet.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodCardPresentWallet : StripeEntity<PaymentMethodCardPresentWallet>
     {
@@ -11,6 +14,9 @@ public class PaymentMethodCardPresentWallet : StripeEntity<PaymentMethodCardPres
         /// One of: <c>apple_pay</c>, <c>google_pay</c>, <c>samsung_pay</c>, or <c>unknown</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardThreeDSecureUsage.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardThreeDSecureUsage.cs
index 1116d86d66..55f0418d3c 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardThreeDSecureUsage.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardThreeDSecureUsage.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodCardThreeDSecureUsage : StripeEntity<PaymentMethodCardThreeDSecureUsage>
     {
@@ -9,6 +12,9 @@ public class PaymentMethodCardThreeDSecureUsage : StripeEntity<PaymentMethodCard
         /// Whether 3D Secure is supported on this card.
         /// </summary>
         [JsonProperty("supported")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("supported")]
+#endif
         public bool Supported { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardWallet.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardWallet.cs
index 9d51338552..4f39ed8027 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardWallet.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardWallet.cs
@@ -2,31 +2,55 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodCardWallet : StripeEntity<PaymentMethodCardWallet>
     {
         [JsonProperty("amex_express_checkout")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amex_express_checkout")]
+#endif
         public PaymentMethodCardWalletAmexExpressCheckout AmexExpressCheckout { get; set; }
 
         [JsonProperty("apple_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("apple_pay")]
+#endif
         public PaymentMethodCardWalletApplePay ApplePay { get; set; }
 
         /// <summary>
         /// (For tokenized numbers only.) The last four digits of the device account number.
         /// </summary>
         [JsonProperty("dynamic_last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dynamic_last4")]
+#endif
         public string DynamicLast4 { get; set; }
 
         [JsonProperty("google_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("google_pay")]
+#endif
         public PaymentMethodCardWalletGooglePay GooglePay { get; set; }
 
         [JsonProperty("link")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("link")]
+#endif
         public PaymentMethodCardWalletLink Link { get; set; }
 
         [JsonProperty("masterpass")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("masterpass")]
+#endif
         public PaymentMethodCardWalletMasterpass Masterpass { get; set; }
 
         [JsonProperty("samsung_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("samsung_pay")]
+#endif
         public PaymentMethodCardWalletSamsungPay SamsungPay { get; set; }
 
         /// <summary>
@@ -38,9 +62,15 @@ public class PaymentMethodCardWallet : StripeEntity<PaymentMethodCardWallet>
         /// <c>masterpass</c>, <c>samsung_pay</c>, or <c>visa_checkout</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         [JsonProperty("visa_checkout")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("visa_checkout")]
+#endif
         public PaymentMethodCardWalletVisaCheckout VisaCheckout { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardWalletMasterpass.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardWalletMasterpass.cs
index 9696982bca..ea2fb64c26 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardWalletMasterpass.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardWalletMasterpass.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodCardWalletMasterpass : StripeEntity<PaymentMethodCardWalletMasterpass>
     {
@@ -11,6 +14,9 @@ public class PaymentMethodCardWalletMasterpass : StripeEntity<PaymentMethodCardW
         /// mutated.
         /// </summary>
         [JsonProperty("billing_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_address")]
+#endif
         public Address BillingAddress { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class PaymentMethodCardWalletMasterpass : StripeEntity<PaymentMethodCardW
         /// supported) at the time of authorization or settlement. They cannot be set or mutated.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class PaymentMethodCardWalletMasterpass : StripeEntity<PaymentMethodCardW
         /// supported) at the time of authorization or settlement. They cannot be set or mutated.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -33,6 +45,9 @@ public class PaymentMethodCardWalletMasterpass : StripeEntity<PaymentMethodCardW
         /// or mutated.
         /// </summary>
         [JsonProperty("shipping_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_address")]
+#endif
         public Address ShippingAddress { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardWalletVisaCheckout.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardWalletVisaCheckout.cs
index a777980a5b..b55012b770 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardWalletVisaCheckout.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCardWalletVisaCheckout.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodCardWalletVisaCheckout : StripeEntity<PaymentMethodCardWalletVisaCheckout>
     {
@@ -11,6 +14,9 @@ public class PaymentMethodCardWalletVisaCheckout : StripeEntity<PaymentMethodCar
         /// mutated.
         /// </summary>
         [JsonProperty("billing_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_address")]
+#endif
         public Address BillingAddress { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class PaymentMethodCardWalletVisaCheckout : StripeEntity<PaymentMethodCar
         /// supported) at the time of authorization or settlement. They cannot be set or mutated.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class PaymentMethodCardWalletVisaCheckout : StripeEntity<PaymentMethodCar
         /// supported) at the time of authorization or settlement. They cannot be set or mutated.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -33,6 +45,9 @@ public class PaymentMethodCardWalletVisaCheckout : StripeEntity<PaymentMethodCar
         /// or mutated.
         /// </summary>
         [JsonProperty("shipping_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_address")]
+#endif
         public Address ShippingAddress { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCashapp.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCashapp.cs
index 18e29e017a..f17923a4c3 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCashapp.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodCashapp.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodCashapp : StripeEntity<PaymentMethodCashapp>
     {
@@ -9,12 +12,18 @@ public class PaymentMethodCashapp : StripeEntity<PaymentMethodCashapp>
         /// A unique and immutable identifier assigned by Cash App to every buyer.
         /// </summary>
         [JsonProperty("buyer_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("buyer_id")]
+#endif
         public string BuyerId { get; set; }
 
         /// <summary>
         /// A public identifier for buyers using Cash App.
         /// </summary>
         [JsonProperty("cashtag")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cashtag")]
+#endif
         public string Cashtag { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodEps.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodEps.cs
index 0de658081f..d35fedbaa3 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodEps.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodEps.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodEps : StripeEntity<PaymentMethodEps>
     {
@@ -35,6 +38,9 @@ public class PaymentMethodEps : StripeEntity<PaymentMethodEps>
         /// <c>vr_bank_braunau</c>.
         /// </summary>
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodFpx.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodFpx.cs
index 40bf5051c9..84d83b1cf8 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodFpx.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodFpx.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodFpx : StripeEntity<PaymentMethodFpx>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodFpx : StripeEntity<PaymentMethodFpx>
         /// One of: <c>company</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("account_holder_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_type")]
+#endif
         public string AccountHolderType { get; set; }
 
         /// <summary>
@@ -26,6 +32,9 @@ public class PaymentMethodFpx : StripeEntity<PaymentMethodFpx>
         /// <c>public_bank</c>, <c>rhb</c>, <c>standard_chartered</c>, or <c>uob</c>.
         /// </summary>
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodIdeal.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodIdeal.cs
index 0b7d4a8e28..5ece22fe11 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodIdeal.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodIdeal.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodIdeal : StripeEntity<PaymentMethodIdeal>
     {
@@ -16,6 +19,9 @@ public class PaymentMethodIdeal : StripeEntity<PaymentMethodIdeal>
         /// <c>yoursafe</c>.
         /// </summary>
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
 
         /// <summary>
@@ -26,6 +32,9 @@ public class PaymentMethodIdeal : StripeEntity<PaymentMethodIdeal>
         /// <c>REVOLT21</c>, <c>SNSBNL2A</c>, or <c>TRIONL2U</c>.
         /// </summary>
         [JsonProperty("bic")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bic")]
+#endif
         public string Bic { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodInteracPresent.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodInteracPresent.cs
index a799d02318..ded445fbb8 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodInteracPresent.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodInteracPresent.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodInteracPresent : StripeEntity<PaymentMethodInteracPresent>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodInteracPresent : StripeEntity<PaymentMethodInteracPres
         /// Card brand. Can be <c>interac</c>, <c>mastercard</c> or <c>visa</c>.
         /// </summary>
         [JsonProperty("brand")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brand")]
+#endif
         public string Brand { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class PaymentMethodInteracPresent : StripeEntity<PaymentMethodInteracPres
         /// payments, such as those made with Apple Pay and Google Pay.
         /// </summary>
         [JsonProperty("cardholder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder_name")]
+#endif
         public string CardholderName { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class PaymentMethodInteracPresent : StripeEntity<PaymentMethodInteracPres
         /// to get a sense of the international breakdown of cards you've collected.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -35,18 +47,27 @@ public class PaymentMethodInteracPresent : StripeEntity<PaymentMethodInteracPres
         /// only and not typically available in standard API requests.).
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// Two-digit number representing the card's expiration month.
         /// </summary>
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public long ExpMonth { get; set; }
 
         /// <summary>
         /// Four-digit number representing the card's expiration year.
         /// </summary>
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public long ExpYear { get; set; }
 
         /// <summary>
@@ -59,6 +80,9 @@ public class PaymentMethodInteracPresent : StripeEntity<PaymentMethodInteracPres
         /// fingerprints for the same card---one for India and one for the rest of the world.</em>.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
@@ -66,6 +90,9 @@ public class PaymentMethodInteracPresent : StripeEntity<PaymentMethodInteracPres
         /// <c>unknown</c>.
         /// </summary>
         [JsonProperty("funding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding")]
+#endif
         public string Funding { get; set; }
 
         /// <summary>
@@ -73,6 +100,9 @@ public class PaymentMethodInteracPresent : StripeEntity<PaymentMethodInteracPres
         /// available in standard API requests.).
         /// </summary>
         [JsonProperty("iin")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iin")]
+#endif
         public string Iin { get; set; }
 
         /// <summary>
@@ -80,24 +110,36 @@ public class PaymentMethodInteracPresent : StripeEntity<PaymentMethodInteracPres
         /// in standard API requests.).
         /// </summary>
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public string Issuer { get; set; }
 
         /// <summary>
         /// The last four digits of the card.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
         /// Contains information about card networks that can be used to process the payment.
         /// </summary>
         [JsonProperty("networks")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("networks")]
+#endif
         public PaymentMethodInteracPresentNetworks Networks { get; set; }
 
         /// <summary>
         /// EMV tag 5F2D. Preferred languages specified by the integrated circuit chip.
         /// </summary>
         [JsonProperty("preferred_locales")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_locales")]
+#endif
         public List<string> PreferredLocales { get; set; }
 
         /// <summary>
@@ -106,6 +148,9 @@ public class PaymentMethodInteracPresent : StripeEntity<PaymentMethodInteracPres
         /// <c>magnetic_stripe_fallback</c>, or <c>magnetic_stripe_track2</c>.
         /// </summary>
         [JsonProperty("read_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("read_method")]
+#endif
         public string ReadMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodInteracPresentNetworks.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodInteracPresentNetworks.cs
index 4e7aa500b6..d938674a40 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodInteracPresentNetworks.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodInteracPresentNetworks.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodInteracPresentNetworks : StripeEntity<PaymentMethodInteracPresentNetworks>
     {
@@ -11,12 +14,18 @@ public class PaymentMethodInteracPresentNetworks : StripeEntity<PaymentMethodInt
         /// href="https://stripe.com/api/payment_intents/confirm#confirm_payment_intent-payment_method_options-card-network">payment_method_options.card.network</a>.
         /// </summary>
         [JsonProperty("available")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available")]
+#endif
         public List<string> Available { get; set; }
 
         /// <summary>
         /// The preferred network for the card.
         /// </summary>
         [JsonProperty("preferred")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred")]
+#endif
         public string Preferred { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodKlarna.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodKlarna.cs
index 1484d40bef..4222e5f3f1 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodKlarna.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodKlarna.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodKlarna : StripeEntity<PaymentMethodKlarna>
     {
@@ -9,6 +12,9 @@ public class PaymentMethodKlarna : StripeEntity<PaymentMethodKlarna>
         /// The customer's date of birth, if provided.
         /// </summary>
         [JsonProperty("dob")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dob")]
+#endif
         public PaymentMethodKlarnaDob Dob { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodKlarnaDob.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodKlarnaDob.cs
index a51a7f84e6..511bc64d0f 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodKlarnaDob.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodKlarnaDob.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodKlarnaDob : StripeEntity<PaymentMethodKlarnaDob>
     {
@@ -9,18 +12,27 @@ public class PaymentMethodKlarnaDob : StripeEntity<PaymentMethodKlarnaDob>
         /// The day of birth, between 1 and 31.
         /// </summary>
         [JsonProperty("day")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("day")]
+#endif
         public long? Day { get; set; }
 
         /// <summary>
         /// The month of birth, between 1 and 12.
         /// </summary>
         [JsonProperty("month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("month")]
+#endif
         public long? Month { get; set; }
 
         /// <summary>
         /// The four-digit year of birth.
         /// </summary>
         [JsonProperty("year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("year")]
+#endif
         public long? Year { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodKrCard.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodKrCard.cs
index c6af1b13ae..ff47394871 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodKrCard.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodKrCard.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodKrCard : StripeEntity<PaymentMethodKrCard>
     {
@@ -14,12 +17,18 @@ public class PaymentMethodKrCard : StripeEntity<PaymentMethodKrCard>
         /// <c>woori</c>.
         /// </summary>
         [JsonProperty("brand")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brand")]
+#endif
         public string Brand { get; set; }
 
         /// <summary>
         /// The last four digits of the card. This may not be present for American Express cards.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodLink.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodLink.cs
index b08b1951f2..d42b1f750f 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodLink.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodLink.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodLink : StripeEntity<PaymentMethodLink>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodLink : StripeEntity<PaymentMethodLink>
         /// Account owner's email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodLink : StripeEntity<PaymentMethodLink>
         /// </summary>
         [Obsolete("This property is deprecated, please refer to the description for details.")]
         [JsonProperty("persistent_token")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("persistent_token")]
+#endif
         public string PersistentToken { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodNaverPay.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodNaverPay.cs
index c35a11a1b2..6f2b2c1fc0 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodNaverPay.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodNaverPay.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodNaverPay : StripeEntity<PaymentMethodNaverPay>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodNaverPay : StripeEntity<PaymentMethodNaverPay>
         /// One of: <c>card</c>, or <c>points</c>.
         /// </summary>
         [JsonProperty("funding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding")]
+#endif
         public string Funding { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodP24.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodP24.cs
index fbe6a4f6c0..78433cc04b 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodP24.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodP24.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodP24 : StripeEntity<PaymentMethodP24>
     {
@@ -17,6 +20,9 @@ public class PaymentMethodP24 : StripeEntity<PaymentMethodP24>
         /// <c>volkswagen_bank</c>.
         /// </summary>
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodPaypal.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodPaypal.cs
index 8b25886751..04548b2652 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodPaypal.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodPaypal.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodPaypal : StripeEntity<PaymentMethodPaypal>
     {
@@ -11,6 +14,9 @@ public class PaymentMethodPaypal : StripeEntity<PaymentMethodPaypal>
         /// or mutated.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -18,12 +24,18 @@ public class PaymentMethodPaypal : StripeEntity<PaymentMethodPaypal>
         /// authorization or settlement. They cannot be set or mutated.
         /// </summary>
         [JsonProperty("payer_email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payer_email")]
+#endif
         public string PayerEmail { get; set; }
 
         /// <summary>
         /// PayPal account PayerID. This identifier uniquely identifies the PayPal customer.
         /// </summary>
         [JsonProperty("payer_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payer_id")]
+#endif
         public string PayerId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodRadarOptions.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodRadarOptions.cs
index 09e55e31d6..9b9f4fb668 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodRadarOptions.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodRadarOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodRadarOptions : StripeEntity<PaymentMethodRadarOptions>
     {
@@ -11,6 +14,9 @@ public class PaymentMethodRadarOptions : StripeEntity<PaymentMethodRadarOptions>
         /// predictions on your payments.
         /// </summary>
         [JsonProperty("session")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("session")]
+#endif
         public string Session { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodSepaDebit.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodSepaDebit.cs
index 84bd0e71d5..d356242eb4 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodSepaDebit.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodSepaDebit.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodSepaDebit : StripeEntity<PaymentMethodSepaDebit>
     {
@@ -9,18 +12,27 @@ public class PaymentMethodSepaDebit : StripeEntity<PaymentMethodSepaDebit>
         /// Bank code of bank associated with the bank account.
         /// </summary>
         [JsonProperty("bank_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_code")]
+#endif
         public string BankCode { get; set; }
 
         /// <summary>
         /// Branch code of bank associated with the bank account.
         /// </summary>
         [JsonProperty("branch_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("branch_code")]
+#endif
         public string BranchCode { get; set; }
 
         /// <summary>
         /// Two-letter ISO code representing the country the bank account is located in.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -28,18 +40,27 @@ public class PaymentMethodSepaDebit : StripeEntity<PaymentMethodSepaDebit>
         /// whether two bank accounts are the same.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
         /// Information about the object that generated this PaymentMethod.
         /// </summary>
         [JsonProperty("generated_from")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("generated_from")]
+#endif
         public PaymentMethodSepaDebitGeneratedFrom GeneratedFrom { get; set; }
 
         /// <summary>
         /// Last four characters of the IBAN.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodSepaDebitGeneratedFrom.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodSepaDebitGeneratedFrom.cs
index daa43cd12c..a5b3953386 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodSepaDebitGeneratedFrom.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodSepaDebitGeneratedFrom.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class PaymentMethodSepaDebitGeneratedFrom : StripeEntity<PaymentMethodSepaDebitGeneratedFrom>
     {
         #region Expandable Charge
@@ -13,6 +19,9 @@ public class PaymentMethodSepaDebitGeneratedFrom : StripeEntity<PaymentMethodSep
         /// The ID of the Charge that generated this PaymentMethod, if any.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ChargeId
         {
             get => this.InternalCharge?.Id;
@@ -26,6 +35,9 @@ public string ChargeId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Charge Charge
         {
             get => this.InternalCharge?.ExpandedObject;
@@ -34,6 +46,10 @@ public Charge Charge
 
         [JsonProperty("charge")]
         [JsonConverter(typeof(ExpandableFieldConverter<Charge>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("charge")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Charge>))]
+#endif
         internal ExpandableField<Charge> InternalCharge { get; set; }
         #endregion
 
@@ -44,6 +60,9 @@ public Charge Charge
         /// The ID of the SetupAttempt that generated this PaymentMethod, if any.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string SetupAttemptId
         {
             get => this.InternalSetupAttempt?.Id;
@@ -57,6 +76,9 @@ public string SetupAttemptId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public SetupAttempt SetupAttempt
         {
             get => this.InternalSetupAttempt?.ExpandedObject;
@@ -65,6 +87,10 @@ public SetupAttempt SetupAttempt
 
         [JsonProperty("setup_attempt")]
         [JsonConverter(typeof(ExpandableFieldConverter<SetupAttempt>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_attempt")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<SetupAttempt>))]
+#endif
         internal ExpandableField<SetupAttempt> InternalSetupAttempt { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodSofort.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodSofort.cs
index b5326f2f2f..751a3c59a0 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodSofort.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodSofort.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodSofort : StripeEntity<PaymentMethodSofort>
     {
@@ -9,6 +12,9 @@ public class PaymentMethodSofort : StripeEntity<PaymentMethodSofort>
         /// Two-letter ISO code representing the country the bank account is located in.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodUsBankAccount.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodUsBankAccount.cs
index b7b69e151b..accd63a214 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodUsBankAccount.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodUsBankAccount.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodUsBankAccount : StripeEntity<PaymentMethodUsBankAccount>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodUsBankAccount : StripeEntity<PaymentMethodUsBankAccoun
         /// One of: <c>company</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("account_holder_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_type")]
+#endif
         public string AccountHolderType { get; set; }
 
         /// <summary>
@@ -17,18 +23,27 @@ public class PaymentMethodUsBankAccount : StripeEntity<PaymentMethodUsBankAccoun
         /// One of: <c>checking</c>, or <c>savings</c>.
         /// </summary>
         [JsonProperty("account_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_type")]
+#endif
         public string AccountType { get; set; }
 
         /// <summary>
         /// The name of the bank.
         /// </summary>
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         /// <summary>
         /// The ID of the Financial Connections Account used to create the payment method.
         /// </summary>
         [JsonProperty("financial_connections_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_connections_account")]
+#endif
         public string FinancialConnectionsAccount { get; set; }
 
         /// <summary>
@@ -36,30 +51,45 @@ public class PaymentMethodUsBankAccount : StripeEntity<PaymentMethodUsBankAccoun
         /// whether two bank accounts are the same.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
         /// Last four digits of the bank account number.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
         /// Contains information about US bank account networks that can be used.
         /// </summary>
         [JsonProperty("networks")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("networks")]
+#endif
         public PaymentMethodUsBankAccountNetworks Networks { get; set; }
 
         /// <summary>
         /// Routing number of the bank account.
         /// </summary>
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
 
         /// <summary>
         /// Contains information about the future reusability of this PaymentMethod.
         /// </summary>
         [JsonProperty("status_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_details")]
+#endif
         public PaymentMethodUsBankAccountStatusDetails StatusDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodUsBankAccountNetworks.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodUsBankAccountNetworks.cs
index 9f6c3a475b..6376e29bd9 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodUsBankAccountNetworks.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodUsBankAccountNetworks.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodUsBankAccountNetworks : StripeEntity<PaymentMethodUsBankAccountNetworks>
     {
@@ -10,6 +13,9 @@ public class PaymentMethodUsBankAccountNetworks : StripeEntity<PaymentMethodUsBa
         /// The preferred network.
         /// </summary>
         [JsonProperty("preferred")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred")]
+#endif
         public string Preferred { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentMethodUsBankAccountNetworks : StripeEntity<PaymentMethodUsBa
         /// One of: <c>ach</c>, or <c>us_domestic_wire</c>.
         /// </summary>
         [JsonProperty("supported")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("supported")]
+#endif
         public List<string> Supported { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodUsBankAccountStatusDetails.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodUsBankAccountStatusDetails.cs
index 3ca488e6db..e882b8e721 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodUsBankAccountStatusDetails.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodUsBankAccountStatusDetails.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodUsBankAccountStatusDetails : StripeEntity<PaymentMethodUsBankAccountStatusDetails>
     {
         [JsonProperty("blocked")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("blocked")]
+#endif
         public PaymentMethodUsBankAccountStatusDetailsBlocked Blocked { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodUsBankAccountStatusDetailsBlocked.cs b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodUsBankAccountStatusDetailsBlocked.cs
index 80970a25da..c575943be0 100644
--- a/src/Stripe.net/Entities/PaymentMethods/PaymentMethodUsBankAccountStatusDetailsBlocked.cs
+++ b/src/Stripe.net/Entities/PaymentMethods/PaymentMethodUsBankAccountStatusDetailsBlocked.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodUsBankAccountStatusDetailsBlocked : StripeEntity<PaymentMethodUsBankAccountStatusDetailsBlocked>
     {
@@ -11,6 +14,9 @@ public class PaymentMethodUsBankAccountStatusDetailsBlocked : StripeEntity<Payme
         /// <c>R10</c>, <c>R11</c>, <c>R16</c>, <c>R20</c>, <c>R29</c>, or <c>R31</c>.
         /// </summary>
         [JsonProperty("network_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network_code")]
+#endif
         public string NetworkCode { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class PaymentMethodUsBankAccountStatusDetailsBlocked : StripeEntity<Payme
         /// <c>bank_account_unusable</c>, or <c>debit_not_authorized</c>.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Payouts/Payout.cs b/src/Stripe.net/Entities/Payouts/Payout.cs
index 93976334ea..62620f3a5e 100644
--- a/src/Stripe.net/Entities/Payouts/Payout.cs
+++ b/src/Stripe.net/Entities/Payouts/Payout.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A <c>Payout</c> object is created when you receive funds from Stripe, or when you
@@ -16,18 +19,27 @@ namespace Stripe
     ///
     /// Related guide: <a href="https://stripe.com/docs/payouts">Receiving payouts</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class Payout : StripeEntity<Payout>, IHasId, IHasMetadata, IHasObject, IBalanceTransactionSource
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -35,6 +47,9 @@ public class Payout : StripeEntity<Payout>, IHasId, IHasMetadata, IHasObject, IB
         /// card.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         #region Expandable ApplicationFee
@@ -46,6 +61,9 @@ public class Payout : StripeEntity<Payout>, IHasId, IHasMetadata, IHasObject, IB
         /// Connect documentation</a> for details.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ApplicationFeeId
         {
             get => this.InternalApplicationFee?.Id;
@@ -61,6 +79,9 @@ public string ApplicationFeeId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public ApplicationFee ApplicationFee
         {
             get => this.InternalApplicationFee?.ExpandedObject;
@@ -69,6 +90,10 @@ public ApplicationFee ApplicationFee
 
         [JsonProperty("application_fee")]
         [JsonConverter(typeof(ExpandableFieldConverter<ApplicationFee>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<ApplicationFee>))]
+#endif
         internal ExpandableField<ApplicationFee> InternalApplicationFee { get; set; }
         #endregion
 
@@ -78,6 +103,9 @@ public ApplicationFee ApplicationFee
         /// Connect documentation</a> for details.
         /// </summary>
         [JsonProperty("application_fee_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_amount")]
+#endif
         public long? ApplicationFeeAmount { get; set; }
 
         /// <summary>
@@ -86,6 +114,10 @@ public ApplicationFee ApplicationFee
         /// </summary>
         [JsonProperty("arrival_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("arrival_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime ArrivalDate { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -95,6 +127,9 @@ public ApplicationFee ApplicationFee
         /// manually</a>.
         /// </summary>
         [JsonProperty("automatic")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatic")]
+#endif
         public bool Automatic { get; set; }
 
         #region Expandable BalanceTransaction
@@ -105,6 +140,9 @@ public ApplicationFee ApplicationFee
         /// balance.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string BalanceTransactionId
         {
             get => this.InternalBalanceTransaction?.Id;
@@ -119,6 +157,9 @@ public string BalanceTransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public BalanceTransaction BalanceTransaction
         {
             get => this.InternalBalanceTransaction?.ExpandedObject;
@@ -127,6 +168,10 @@ public BalanceTransaction BalanceTransaction
 
         [JsonProperty("balance_transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<BalanceTransaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("balance_transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<BalanceTransaction>))]
+#endif
         internal ExpandableField<BalanceTransaction> InternalBalanceTransaction { get; set; }
         #endregion
 
@@ -135,6 +180,10 @@ public BalanceTransaction BalanceTransaction
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -143,12 +192,18 @@ public BalanceTransaction BalanceTransaction
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         #region Expandable Destination
@@ -158,6 +213,9 @@ public BalanceTransaction BalanceTransaction
         /// ID of the bank account or card the payout is sent to.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DestinationId
         {
             get => this.InternalDestination?.Id;
@@ -171,6 +229,9 @@ public string DestinationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public IExternalAccount Destination
         {
             get => this.InternalDestination?.ExpandedObject;
@@ -179,6 +240,10 @@ public IExternalAccount Destination
 
         [JsonProperty("destination")]
         [JsonConverter(typeof(ExpandableFieldConverter<IExternalAccount>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<IExternalAccount>))]
+#endif
         internal ExpandableField<IExternalAccount> InternalDestination { get; set; }
         #endregion
 
@@ -191,6 +256,9 @@ public IExternalAccount Destination
         /// your balance.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string FailureBalanceTransactionId
         {
             get => this.InternalFailureBalanceTransaction?.Id;
@@ -206,6 +274,9 @@ public string FailureBalanceTransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public BalanceTransaction FailureBalanceTransaction
         {
             get => this.InternalFailureBalanceTransaction?.ExpandedObject;
@@ -214,6 +285,10 @@ public BalanceTransaction FailureBalanceTransaction
 
         [JsonProperty("failure_balance_transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<BalanceTransaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("failure_balance_transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<BalanceTransaction>))]
+#endif
         internal ExpandableField<BalanceTransaction> InternalFailureBalanceTransaction { get; set; }
         #endregion
 
@@ -222,12 +297,18 @@ public BalanceTransaction FailureBalanceTransaction
         /// href="https://stripe.com/docs/api#payout_failures">list of failure codes</a>.
         /// </summary>
         [JsonProperty("failure_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("failure_code")]
+#endif
         public string FailureCode { get; set; }
 
         /// <summary>
         /// Message that provides the reason for a payout failure, if available.
         /// </summary>
         [JsonProperty("failure_message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("failure_message")]
+#endif
         public string FailureMessage { get; set; }
 
         /// <summary>
@@ -235,6 +316,9 @@ public BalanceTransaction FailureBalanceTransaction
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -243,6 +327,9 @@ public BalanceTransaction FailureBalanceTransaction
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -253,6 +340,9 @@ public BalanceTransaction FailureBalanceTransaction
         /// Payouts</a>.
         /// </summary>
         [JsonProperty("method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("method")]
+#endif
         public string Method { get; set; }
 
         #region Expandable OriginalPayout
@@ -262,6 +352,9 @@ public BalanceTransaction FailureBalanceTransaction
         /// If the payout reverses another, this is the ID of the original payout.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string OriginalPayoutId
         {
             get => this.InternalOriginalPayout?.Id;
@@ -275,6 +368,9 @@ public string OriginalPayoutId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Payout OriginalPayout
         {
             get => this.InternalOriginalPayout?.ExpandedObject;
@@ -283,6 +379,10 @@ public Payout OriginalPayout
 
         [JsonProperty("original_payout")]
         [JsonConverter(typeof(ExpandableFieldConverter<Payout>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("original_payout")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Payout>))]
+#endif
         internal ExpandableField<Payout> InternalOriginalPayout { get; set; }
         #endregion
 
@@ -293,6 +393,9 @@ public Payout OriginalPayout
         /// One of: <c>completed</c>, <c>in_progress</c>, or <c>not_applicable</c>.
         /// </summary>
         [JsonProperty("reconciliation_status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reconciliation_status")]
+#endif
         public string ReconciliationStatus { get; set; }
 
         #region Expandable ReversedBy
@@ -302,6 +405,9 @@ public Payout OriginalPayout
         /// If the payout reverses, this is the ID of the payout that reverses this payout.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ReversedById
         {
             get => this.InternalReversedBy?.Id;
@@ -315,6 +421,9 @@ public string ReversedById
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Payout ReversedBy
         {
             get => this.InternalReversedBy?.ExpandedObject;
@@ -323,6 +432,10 @@ public Payout ReversedBy
 
         [JsonProperty("reversed_by")]
         [JsonConverter(typeof(ExpandableFieldConverter<Payout>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reversed_by")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Payout>))]
+#endif
         internal ExpandableField<Payout> InternalReversedBy { get; set; }
         #endregion
 
@@ -331,12 +444,18 @@ public Payout ReversedBy
         /// <c>card</c>, <c>fpx</c>, or <c>bank_account</c>.
         /// </summary>
         [JsonProperty("source_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source_type")]
+#endif
         public string SourceType { get; set; }
 
         /// <summary>
         /// Extra information about a payout that displays on the user's bank statement.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
 
         /// <summary>
@@ -348,6 +467,9 @@ public Payout ReversedBy
         /// <c>failed</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -355,6 +477,9 @@ public Payout ReversedBy
         /// with their bank. Banks might call this a "reference number" or something similar.
         /// </summary>
         [JsonProperty("trace_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trace_id")]
+#endif
         public PayoutTraceId TraceId { get; set; }
 
         /// <summary>
@@ -362,6 +487,9 @@ public Payout ReversedBy
         /// One of: <c>bank_account</c>, or <c>card</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Payouts/PayoutTraceId.cs b/src/Stripe.net/Entities/Payouts/PayoutTraceId.cs
index 55112f418f..6370ac5dce 100644
--- a/src/Stripe.net/Entities/Payouts/PayoutTraceId.cs
+++ b/src/Stripe.net/Entities/Payouts/PayoutTraceId.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PayoutTraceId : StripeEntity<PayoutTraceId>
     {
@@ -14,12 +17,18 @@ public class PayoutTraceId : StripeEntity<PayoutTraceId>
         /// after <c>arrival_date</c> until transitioning to <c>supported</c> or <c>unsupported</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
         /// The trace ID value if <c>trace_id.status</c> is <c>supported</c>, otherwise <c>nil</c>.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Persons/Dob.cs b/src/Stripe.net/Entities/Persons/Dob.cs
index 323356a481..41cf54c3c2 100644
--- a/src/Stripe.net/Entities/Persons/Dob.cs
+++ b/src/Stripe.net/Entities/Persons/Dob.cs
@@ -1,16 +1,28 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class Dob : StripeEntity<Dob>
     {
         [JsonProperty("day")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("day")]
+#endif
         public long? Day { get; set; }
 
         [JsonProperty("month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("month")]
+#endif
         public long? Month { get; set; }
 
         [JsonProperty("year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("year")]
+#endif
         public long? Year { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Persons/Person.cs b/src/Stripe.net/Entities/Persons/Person.cs
index 31918551a2..b57b58e190 100644
--- a/src/Stripe.net/Entities/Persons/Person.cs
+++ b/src/Stripe.net/Entities/Persons/Person.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// This is an object representing a person associated with a Stripe account.
@@ -27,36 +30,57 @@ public class Person : StripeEntity<Person>, IHasId, IHasMetadata, IHasObject
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// The account the person is associated with.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public string Account { get; set; }
 
         [JsonProperty("additional_tos_acceptances")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("additional_tos_acceptances")]
+#endif
         public PersonAdditionalTosAcceptances AdditionalTosAcceptances { get; set; }
 
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public Address Address { get; set; }
 
         /// <summary>
         /// The Kana variation of the person's address (Japan only).
         /// </summary>
         [JsonProperty("address_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_kana")]
+#endif
         public AddressJapan AddressKana { get; set; }
 
         /// <summary>
         /// The Kanji variation of the person's address (Japan only).
         /// </summary>
         [JsonProperty("address_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_kanji")]
+#endif
         public AddressJapan AddressKanji { get; set; }
 
         /// <summary>
@@ -64,45 +88,71 @@ public class Person : StripeEntity<Person>, IHasId, IHasMetadata, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// Whether this object is deleted or not.
         /// </summary>
         [JsonProperty("deleted", NullValueHandling = NullValueHandling.Ignore)]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+        [STJS.JsonIgnore(Condition = STJS.JsonIgnoreCondition.WhenWritingNull)]
+#endif
         public bool? Deleted { get; set; }
 
         [JsonProperty("dob")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dob")]
+#endif
         public Dob Dob { get; set; }
 
         /// <summary>
         /// The person's email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// The person's first name.
         /// </summary>
         [JsonProperty("first_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_name")]
+#endif
         public string FirstName { get; set; }
 
         /// <summary>
         /// The Kana variation of the person's first name (Japan only).
         /// </summary>
         [JsonProperty("first_name_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_name_kana")]
+#endif
         public string FirstNameKana { get; set; }
 
         /// <summary>
         /// The Kanji variation of the person's first name (Japan only).
         /// </summary>
         [JsonProperty("first_name_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_name_kanji")]
+#endif
         public string FirstNameKanji { get; set; }
 
         /// <summary>
         /// A list of alternate names or aliases that the person is known by.
         /// </summary>
         [JsonProperty("full_name_aliases")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("full_name_aliases")]
+#endif
         public List<string> FullNameAliases { get; set; }
 
         /// <summary>
@@ -112,12 +162,18 @@ public class Person : StripeEntity<Person>, IHasId, IHasMetadata, IHasObject
         /// by when.
         /// </summary>
         [JsonProperty("future_requirements")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("future_requirements")]
+#endif
         public PersonFutureRequirements FutureRequirements { get; set; }
 
         /// <summary>
         /// The person's gender.
         /// </summary>
         [JsonProperty("gender")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gender")]
+#endif
         public string Gender { get; set; }
 
         /// <summary>
@@ -126,36 +182,54 @@ public class Person : StripeEntity<Person>, IHasId, IHasMetadata, IHasObject
         /// of an individual's SSN for the US indicated by <c>ssn_last_4_provided</c>).
         /// </summary>
         [JsonProperty("id_number_provided")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id_number_provided")]
+#endif
         public bool IdNumberProvided { get; set; }
 
         /// <summary>
         /// Whether the person's <c>id_number_secondary</c> was provided.
         /// </summary>
         [JsonProperty("id_number_secondary_provided")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id_number_secondary_provided")]
+#endif
         public bool IdNumberSecondaryProvided { get; set; }
 
         /// <summary>
         /// The person's last name.
         /// </summary>
         [JsonProperty("last_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_name")]
+#endif
         public string LastName { get; set; }
 
         /// <summary>
         /// The Kana variation of the person's last name (Japan only).
         /// </summary>
         [JsonProperty("last_name_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_name_kana")]
+#endif
         public string LastNameKana { get; set; }
 
         /// <summary>
         /// The Kanji variation of the person's last name (Japan only).
         /// </summary>
         [JsonProperty("last_name_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_name_kanji")]
+#endif
         public string LastNameKanji { get; set; }
 
         /// <summary>
         /// The person's maiden name.
         /// </summary>
         [JsonProperty("maiden_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("maiden_name")]
+#endif
         public string MaidenName { get; set; }
 
         /// <summary>
@@ -164,18 +238,27 @@ public class Person : StripeEntity<Person>, IHasId, IHasMetadata, IHasObject
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The country where the person is a national.
         /// </summary>
         [JsonProperty("nationality")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("nationality")]
+#endif
         public string Nationality { get; set; }
 
         /// <summary>
         /// The person's phone number.
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
 
         /// <summary>
@@ -185,12 +268,21 @@ public class Person : StripeEntity<Person>, IHasId, IHasMetadata, IHasObject
         /// One of: <c>existing</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("political_exposure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("political_exposure")]
+#endif
         public string PoliticalExposure { get; set; }
 
         [JsonProperty("registered_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("registered_address")]
+#endif
         public Address RegisteredAddress { get; set; }
 
         [JsonProperty("relationship")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("relationship")]
+#endif
         public PersonRelationship Relationship { get; set; }
 
         /// <summary>
@@ -198,6 +290,9 @@ public class Person : StripeEntity<Person>, IHasId, IHasMetadata, IHasObject
         /// be collected, and by when.
         /// </summary>
         [JsonProperty("requirements")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requirements")]
+#endif
         public PersonRequirements Requirements { get; set; }
 
         /// <summary>
@@ -205,9 +300,15 @@ public class Person : StripeEntity<Person>, IHasId, IHasMetadata, IHasObject
         /// (U.S. only).
         /// </summary>
         [JsonProperty("ssn_last_4_provided")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ssn_last_4_provided")]
+#endif
         public bool SsnLast4Provided { get; set; }
 
         [JsonProperty("verification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification")]
+#endif
         public PersonVerification Verification { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Persons/PersonAdditionalTosAcceptances.cs b/src/Stripe.net/Entities/Persons/PersonAdditionalTosAcceptances.cs
index 85e6e7c9be..4b0924acdf 100644
--- a/src/Stripe.net/Entities/Persons/PersonAdditionalTosAcceptances.cs
+++ b/src/Stripe.net/Entities/Persons/PersonAdditionalTosAcceptances.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PersonAdditionalTosAcceptances : StripeEntity<PersonAdditionalTosAcceptances>
     {
@@ -9,6 +12,9 @@ public class PersonAdditionalTosAcceptances : StripeEntity<PersonAdditionalTosAc
         /// Details on the legal guardian's acceptance of the main Stripe service agreement.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public PersonAdditionalTosAcceptancesAccount Account { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Persons/PersonAdditionalTosAcceptancesAccount.cs b/src/Stripe.net/Entities/Persons/PersonAdditionalTosAcceptancesAccount.cs
index bf8a80feea..a63ccaf0dd 100644
--- a/src/Stripe.net/Entities/Persons/PersonAdditionalTosAcceptancesAccount.cs
+++ b/src/Stripe.net/Entities/Persons/PersonAdditionalTosAcceptancesAccount.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PersonAdditionalTosAcceptancesAccount : StripeEntity<PersonAdditionalTosAcceptancesAccount>
     {
@@ -12,12 +15,19 @@ public class PersonAdditionalTosAcceptancesAccount : StripeEntity<PersonAddition
         /// </summary>
         [JsonProperty("date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? Date { get; set; }
 
         /// <summary>
         /// The IP address from which the legal guardian accepted the service agreement.
         /// </summary>
         [JsonProperty("ip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip")]
+#endif
         public string Ip { get; set; }
 
         /// <summary>
@@ -25,6 +35,9 @@ public class PersonAdditionalTosAcceptancesAccount : StripeEntity<PersonAddition
         /// agreement.
         /// </summary>
         [JsonProperty("user_agent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_agent")]
+#endif
         public string UserAgent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Persons/PersonFutureRequirements.cs b/src/Stripe.net/Entities/Persons/PersonFutureRequirements.cs
index 26da6fbfe3..37135d49af 100644
--- a/src/Stripe.net/Entities/Persons/PersonFutureRequirements.cs
+++ b/src/Stripe.net/Entities/Persons/PersonFutureRequirements.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PersonFutureRequirements : StripeEntity<PersonFutureRequirements>
     {
@@ -11,6 +14,9 @@ public class PersonFutureRequirements : StripeEntity<PersonFutureRequirements>
         /// fields instead.
         /// </summary>
         [JsonProperty("alternatives")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alternatives")]
+#endif
         public List<PersonFutureRequirementsAlternative> Alternatives { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class PersonFutureRequirements : StripeEntity<PersonFutureRequirements>
         /// account's enablement state prior to transition.
         /// </summary>
         [JsonProperty("currently_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currently_due")]
+#endif
         public List<string> CurrentlyDue { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class PersonFutureRequirements : StripeEntity<PersonFutureRequirements>
         /// or verification failed.
         /// </summary>
         [JsonProperty("errors")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("errors")]
+#endif
         public List<PersonFutureRequirementsError> Errors { get; set; }
 
         /// <summary>
@@ -36,6 +48,9 @@ public class PersonFutureRequirements : StripeEntity<PersonFutureRequirements>
         /// <c>future_requirements[current_deadline]</c> becomes set.
         /// </summary>
         [JsonProperty("eventually_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eventually_due")]
+#endif
         public List<string> EventuallyDue { get; set; }
 
         /// <summary>
@@ -45,6 +60,9 @@ public class PersonFutureRequirements : StripeEntity<PersonFutureRequirements>
         /// <c>requirements.past_due</c>.
         /// </summary>
         [JsonProperty("past_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("past_due")]
+#endif
         public List<string> PastDue { get; set; }
 
         /// <summary>
@@ -56,6 +74,9 @@ public class PersonFutureRequirements : StripeEntity<PersonFutureRequirements>
         /// pending.
         /// </summary>
         [JsonProperty("pending_verification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pending_verification")]
+#endif
         public List<string> PendingVerification { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Persons/PersonFutureRequirementsAlternative.cs b/src/Stripe.net/Entities/Persons/PersonFutureRequirementsAlternative.cs
index ff2dc474f6..8db365a11c 100644
--- a/src/Stripe.net/Entities/Persons/PersonFutureRequirementsAlternative.cs
+++ b/src/Stripe.net/Entities/Persons/PersonFutureRequirementsAlternative.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PersonFutureRequirementsAlternative : StripeEntity<PersonFutureRequirementsAlternative>
     {
@@ -10,6 +13,9 @@ public class PersonFutureRequirementsAlternative : StripeEntity<PersonFutureRequ
         /// Fields that can be provided to satisfy all fields in <c>original_fields_due</c>.
         /// </summary>
         [JsonProperty("alternative_fields_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alternative_fields_due")]
+#endif
         public List<string> AlternativeFieldsDue { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PersonFutureRequirementsAlternative : StripeEntity<PersonFutureRequ
         /// <c>alternative_fields_due</c>.
         /// </summary>
         [JsonProperty("original_fields_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("original_fields_due")]
+#endif
         public List<string> OriginalFieldsDue { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Persons/PersonFutureRequirementsError.cs b/src/Stripe.net/Entities/Persons/PersonFutureRequirementsError.cs
index abc2475873..212db3635a 100644
--- a/src/Stripe.net/Entities/Persons/PersonFutureRequirementsError.cs
+++ b/src/Stripe.net/Entities/Persons/PersonFutureRequirementsError.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PersonFutureRequirementsError : StripeEntity<PersonFutureRequirementsError>
     {
@@ -69,6 +72,9 @@ public class PersonFutureRequirementsError : StripeEntity<PersonFutureRequiremen
         /// <c>verification_supportability</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
@@ -76,6 +82,9 @@ public class PersonFutureRequirementsError : StripeEntity<PersonFutureRequiremen
         /// about the error.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
 
         /// <summary>
@@ -83,6 +92,9 @@ public class PersonFutureRequirementsError : StripeEntity<PersonFutureRequiremen
         /// be resolved.
         /// </summary>
         [JsonProperty("requirement")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requirement")]
+#endif
         public string Requirement { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Persons/PersonRelationship.cs b/src/Stripe.net/Entities/Persons/PersonRelationship.cs
index b968af1452..11f7e04e56 100644
--- a/src/Stripe.net/Entities/Persons/PersonRelationship.cs
+++ b/src/Stripe.net/Entities/Persons/PersonRelationship.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PersonRelationship : StripeEntity<PersonRelationship>
     {
@@ -9,6 +12,9 @@ public class PersonRelationship : StripeEntity<PersonRelationship>
         /// Whether the person is the authorizer of the account's representative.
         /// </summary>
         [JsonProperty("authorizer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("authorizer")]
+#endif
         public bool? Authorizer { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PersonRelationship : StripeEntity<PersonRelationship>
         /// meets its regulatory obligations.
         /// </summary>
         [JsonProperty("director")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("director")]
+#endif
         public bool? Director { get; set; }
 
         /// <summary>
@@ -24,24 +33,36 @@ public class PersonRelationship : StripeEntity<PersonRelationship>
         /// organization.
         /// </summary>
         [JsonProperty("executive")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("executive")]
+#endif
         public bool? Executive { get; set; }
 
         /// <summary>
         /// Whether the person is the legal guardian of the account's representative.
         /// </summary>
         [JsonProperty("legal_guardian")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("legal_guardian")]
+#endif
         public bool? LegalGuardian { get; set; }
 
         /// <summary>
         /// Whether the person is an owner of the account’s legal entity.
         /// </summary>
         [JsonProperty("owner")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("owner")]
+#endif
         public bool? Owner { get; set; }
 
         /// <summary>
         /// The percent owned by the person of the account's legal entity.
         /// </summary>
         [JsonProperty("percent_ownership")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percent_ownership")]
+#endif
         public decimal? PercentOwnership { get; set; }
 
         /// <summary>
@@ -52,12 +73,18 @@ public class PersonRelationship : StripeEntity<PersonRelationship>
         /// responsible for opening the account.
         /// </summary>
         [JsonProperty("representative")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("representative")]
+#endif
         public bool? Representative { get; set; }
 
         /// <summary>
         /// The person's title (e.g., CEO, Support Engineer).
         /// </summary>
         [JsonProperty("title")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("title")]
+#endif
         public string Title { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Persons/PersonRequirements.cs b/src/Stripe.net/Entities/Persons/PersonRequirements.cs
index 463ef23697..0349952fd9 100644
--- a/src/Stripe.net/Entities/Persons/PersonRequirements.cs
+++ b/src/Stripe.net/Entities/Persons/PersonRequirements.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PersonRequirements : StripeEntity<PersonRequirements>
     {
@@ -11,6 +14,9 @@ public class PersonRequirements : StripeEntity<PersonRequirements>
         /// fields instead.
         /// </summary>
         [JsonProperty("alternatives")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alternatives")]
+#endif
         public List<PersonRequirementsAlternative> Alternatives { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class PersonRequirements : StripeEntity<PersonRequirements>
         /// well, and the account is disabled.
         /// </summary>
         [JsonProperty("currently_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currently_due")]
+#endif
         public List<string> CurrentlyDue { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class PersonRequirements : StripeEntity<PersonRequirements>
         /// or verification failed.
         /// </summary>
         [JsonProperty("errors")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("errors")]
+#endif
         public List<PersonRequirementsError> Errors { get; set; }
 
         /// <summary>
@@ -34,6 +46,9 @@ public class PersonRequirements : StripeEntity<PersonRequirements>
         /// becomes set.
         /// </summary>
         [JsonProperty("eventually_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eventually_due")]
+#endif
         public List<string> EventuallyDue { get; set; }
 
         /// <summary>
@@ -41,6 +56,9 @@ public class PersonRequirements : StripeEntity<PersonRequirements>
         /// need to be collected to enable the person's account.
         /// </summary>
         [JsonProperty("past_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("past_due")]
+#endif
         public List<string> PastDue { get; set; }
 
         /// <summary>
@@ -52,6 +70,9 @@ public class PersonRequirements : StripeEntity<PersonRequirements>
         /// verification is still pending.
         /// </summary>
         [JsonProperty("pending_verification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pending_verification")]
+#endif
         public List<string> PendingVerification { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Persons/PersonRequirementsAlternative.cs b/src/Stripe.net/Entities/Persons/PersonRequirementsAlternative.cs
index 7670ec3e76..ab7362517f 100644
--- a/src/Stripe.net/Entities/Persons/PersonRequirementsAlternative.cs
+++ b/src/Stripe.net/Entities/Persons/PersonRequirementsAlternative.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PersonRequirementsAlternative : StripeEntity<PersonRequirementsAlternative>
     {
@@ -10,6 +13,9 @@ public class PersonRequirementsAlternative : StripeEntity<PersonRequirementsAlte
         /// Fields that can be provided to satisfy all fields in <c>original_fields_due</c>.
         /// </summary>
         [JsonProperty("alternative_fields_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alternative_fields_due")]
+#endif
         public List<string> AlternativeFieldsDue { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PersonRequirementsAlternative : StripeEntity<PersonRequirementsAlte
         /// <c>alternative_fields_due</c>.
         /// </summary>
         [JsonProperty("original_fields_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("original_fields_due")]
+#endif
         public List<string> OriginalFieldsDue { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Persons/PersonRequirementsError.cs b/src/Stripe.net/Entities/Persons/PersonRequirementsError.cs
index 6055ce9ca4..f510621d79 100644
--- a/src/Stripe.net/Entities/Persons/PersonRequirementsError.cs
+++ b/src/Stripe.net/Entities/Persons/PersonRequirementsError.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PersonRequirementsError : StripeEntity<PersonRequirementsError>
     {
@@ -69,6 +72,9 @@ public class PersonRequirementsError : StripeEntity<PersonRequirementsError>
         /// <c>verification_supportability</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
@@ -76,6 +82,9 @@ public class PersonRequirementsError : StripeEntity<PersonRequirementsError>
         /// about the error.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
 
         /// <summary>
@@ -83,6 +92,9 @@ public class PersonRequirementsError : StripeEntity<PersonRequirementsError>
         /// be resolved.
         /// </summary>
         [JsonProperty("requirement")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requirement")]
+#endif
         public string Requirement { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Persons/PersonVerification.cs b/src/Stripe.net/Entities/Persons/PersonVerification.cs
index 7205e4e4b8..6c53aab1c8 100644
--- a/src/Stripe.net/Entities/Persons/PersonVerification.cs
+++ b/src/Stripe.net/Entities/Persons/PersonVerification.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PersonVerification : StripeEntity<PersonVerification>
     {
@@ -10,6 +13,9 @@ public class PersonVerification : StripeEntity<PersonVerification>
         /// well-known utility company.
         /// </summary>
         [JsonProperty("additional_document")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("additional_document")]
+#endif
         public PersonVerificationAdditionalDocument AdditionalDocument { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PersonVerification : StripeEntity<PersonVerification>
         /// this may say "Provided identity information could not be verified".
         /// </summary>
         [JsonProperty("details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("details")]
+#endif
         public string Details { get; set; }
 
         /// <summary>
@@ -27,9 +36,15 @@ public class PersonVerification : StripeEntity<PersonVerification>
         /// the verification state for the person.
         /// </summary>
         [JsonProperty("details_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("details_code")]
+#endif
         public string DetailsCode { get; set; }
 
         [JsonProperty("document")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("document")]
+#endif
         public PersonVerificationDocument Document { get; set; }
 
         /// <summary>
@@ -37,6 +52,9 @@ public class PersonVerification : StripeEntity<PersonVerification>
         /// <c>pending</c>, or <c>verified</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Persons/PersonVerificationAdditionalDocument.cs b/src/Stripe.net/Entities/Persons/PersonVerificationAdditionalDocument.cs
index 5422ce2c83..bfb507d080 100644
--- a/src/Stripe.net/Entities/Persons/PersonVerificationAdditionalDocument.cs
+++ b/src/Stripe.net/Entities/Persons/PersonVerificationAdditionalDocument.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class PersonVerificationAdditionalDocument : StripeEntity<PersonVerificationAdditionalDocument>
     {
         #region Expandable Back
@@ -14,6 +20,9 @@ public class PersonVerificationAdditionalDocument : StripeEntity<PersonVerificat
         /// upload</a> with a <c>purpose</c> value of <c>identity_document</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string BackId
         {
             get => this.InternalBack?.Id;
@@ -28,6 +37,9 @@ public string BackId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File Back
         {
             get => this.InternalBack?.ExpandedObject;
@@ -36,6 +48,10 @@ public File Back
 
         [JsonProperty("back")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("back")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalBack { get; set; }
         #endregion
 
@@ -45,6 +61,9 @@ public File Back
         /// document is too unclear to read".
         /// </summary>
         [JsonProperty("details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("details")]
+#endif
         public string Details { get; set; }
 
         /// <summary>
@@ -59,6 +78,9 @@ public File Back
         /// verification state for this document.
         /// </summary>
         [JsonProperty("details_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("details_code")]
+#endif
         public string DetailsCode { get; set; }
 
         #region Expandable Front
@@ -69,6 +91,9 @@ public File Back
         /// upload</a> with a <c>purpose</c> value of <c>identity_document</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string FrontId
         {
             get => this.InternalFront?.Id;
@@ -83,6 +108,9 @@ public string FrontId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File Front
         {
             get => this.InternalFront?.ExpandedObject;
@@ -91,6 +119,10 @@ public File Front
 
         [JsonProperty("front")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("front")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalFront { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Persons/PersonVerificationDocument.cs b/src/Stripe.net/Entities/Persons/PersonVerificationDocument.cs
index 69531bf3f3..2ec40cd854 100644
--- a/src/Stripe.net/Entities/Persons/PersonVerificationDocument.cs
+++ b/src/Stripe.net/Entities/Persons/PersonVerificationDocument.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class PersonVerificationDocument : StripeEntity<PersonVerificationDocument>
     {
         #region Expandable Back
@@ -14,6 +20,9 @@ public class PersonVerificationDocument : StripeEntity<PersonVerificationDocumen
         /// upload</a> with a <c>purpose</c> value of <c>identity_document</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string BackId
         {
             get => this.InternalBack?.Id;
@@ -28,6 +37,9 @@ public string BackId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File Back
         {
             get => this.InternalBack?.ExpandedObject;
@@ -36,6 +48,10 @@ public File Back
 
         [JsonProperty("back")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("back")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalBack { get; set; }
         #endregion
 
@@ -45,6 +61,9 @@ public File Back
         /// document is too unclear to read".
         /// </summary>
         [JsonProperty("details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("details")]
+#endif
         public string Details { get; set; }
 
         /// <summary>
@@ -59,6 +78,9 @@ public File Back
         /// verification state for this document.
         /// </summary>
         [JsonProperty("details_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("details_code")]
+#endif
         public string DetailsCode { get; set; }
 
         #region Expandable Front
@@ -69,6 +91,9 @@ public File Back
         /// upload</a> with a <c>purpose</c> value of <c>identity_document</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string FrontId
         {
             get => this.InternalFront?.Id;
@@ -83,6 +108,9 @@ public string FrontId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File Front
         {
             get => this.InternalFront?.ExpandedObject;
@@ -91,6 +119,10 @@ public File Front
 
         [JsonProperty("front")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("front")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalFront { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Plans/Plan.cs b/src/Stripe.net/Entities/Plans/Plan.cs
index e839b952a9..e19839d6f4 100644
--- a/src/Stripe.net/Entities/Plans/Plan.cs
+++ b/src/Stripe.net/Entities/Plans/Plan.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// You can now model subscriptions more flexibly using the <a
@@ -26,24 +29,36 @@ namespace Stripe
     /// subscription</a> and more about <a
     /// href="https://stripe.com/docs/products-prices/overview">products and prices</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class Plan : StripeEntity<Plan>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Whether the plan can be used for new purchases.
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool Active { get; set; }
 
         /// <summary>
@@ -56,6 +71,9 @@ public class Plan : StripeEntity<Plan>, IHasId, IHasMetadata, IHasObject
         /// One of: <c>last_during_period</c>, <c>last_ever</c>, <c>max</c>, or <c>sum</c>.
         /// </summary>
         [JsonProperty("aggregate_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("aggregate_usage")]
+#endif
         public string AggregateUsage { get; set; }
 
         /// <summary>
@@ -63,6 +81,9 @@ public class Plan : StripeEntity<Plan>, IHasId, IHasMetadata, IHasObject
         /// integer if possible. Only set if <c>billing_scheme=per_unit</c>.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -70,6 +91,9 @@ public class Plan : StripeEntity<Plan>, IHasId, IHasMetadata, IHasObject
         /// string with at most 12 decimal places. Only set if <c>billing_scheme=per_unit</c>.
         /// </summary>
         [JsonProperty("amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_decimal")]
+#endif
         public decimal? AmountDecimal { get; set; }
 
         /// <summary>
@@ -82,6 +106,9 @@ public class Plan : StripeEntity<Plan>, IHasId, IHasMetadata, IHasObject
         /// One of: <c>per_unit</c>, or <c>tiered</c>.
         /// </summary>
         [JsonProperty("billing_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_scheme")]
+#endif
         public string BillingScheme { get; set; }
 
         /// <summary>
@@ -89,6 +116,10 @@ public class Plan : StripeEntity<Plan>, IHasId, IHasMetadata, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -97,12 +128,19 @@ public class Plan : StripeEntity<Plan>, IHasId, IHasMetadata, IHasObject
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// Whether this object is deleted or not.
         /// </summary>
         [JsonProperty("deleted", NullValueHandling = NullValueHandling.Ignore)]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+        [STJS.JsonIgnore(Condition = STJS.JsonIgnoreCondition.WhenWritingNull)]
+#endif
         public bool? Deleted { get; set; }
 
         /// <summary>
@@ -111,6 +149,9 @@ public class Plan : StripeEntity<Plan>, IHasId, IHasMetadata, IHasObject
         /// One of: <c>day</c>, <c>month</c>, <c>week</c>, or <c>year</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
 
         /// <summary>
@@ -119,6 +160,9 @@ public class Plan : StripeEntity<Plan>, IHasId, IHasMetadata, IHasObject
         /// bills every 3 months.
         /// </summary>
         [JsonProperty("interval_count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_count")]
+#endif
         public long IntervalCount { get; set; }
 
         /// <summary>
@@ -126,6 +170,9 @@ public class Plan : StripeEntity<Plan>, IHasId, IHasMetadata, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -134,18 +181,27 @@ public class Plan : StripeEntity<Plan>, IHasId, IHasMetadata, IHasObject
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The meter tracking the usage of a metered price.
         /// </summary>
         [JsonProperty("meter")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("meter")]
+#endif
         public string Meter { get; set; }
 
         /// <summary>
         /// A brief description of the plan, hidden from customers.
         /// </summary>
         [JsonProperty("nickname")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("nickname")]
+#endif
         public string Nickname { get; set; }
 
         #region Expandable Product
@@ -155,6 +211,9 @@ public class Plan : StripeEntity<Plan>, IHasId, IHasMetadata, IHasObject
         /// The product whose pricing this plan determines.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ProductId
         {
             get => this.InternalProduct?.Id;
@@ -168,6 +227,9 @@ public string ProductId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Product Product
         {
             get => this.InternalProduct?.ExpandedObject;
@@ -176,6 +238,10 @@ public Product Product
 
         [JsonProperty("product")]
         [JsonConverter(typeof(ExpandableFieldConverter<Product>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Product>))]
+#endif
         internal ExpandableField<Product> InternalProduct { get; set; }
         #endregion
 
@@ -184,6 +250,9 @@ public Product Product
         /// be set to <c>tiered</c>. See also the documentation for <c>billing_scheme</c>.
         /// </summary>
         [JsonProperty("tiers")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tiers")]
+#endif
         public List<PlanTier> Tiers { get; set; }
 
         /// <summary>
@@ -193,6 +262,9 @@ public Product Product
         /// One of: <c>graduated</c>, or <c>volume</c>.
         /// </summary>
         [JsonProperty("tiers_mode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tiers_mode")]
+#endif
         public string TiersMode { get; set; }
 
         /// <summary>
@@ -200,6 +272,9 @@ public Product Product
         /// billed. Cannot be combined with <c>tiers</c>.
         /// </summary>
         [JsonProperty("transform_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transform_usage")]
+#endif
         public PlanTransformUsage TransformUsage { get; set; }
 
         /// <summary>
@@ -207,6 +282,9 @@ public Product Product
         /// href="https://stripe.com/docs/api#create_subscription-trial_from_plan"><c>trial_from_plan=true</c></a>.
         /// </summary>
         [JsonProperty("trial_period_days")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_period_days")]
+#endif
         public long? TrialPeriodDays { get; set; }
 
         /// <summary>
@@ -217,6 +295,9 @@ public Product Product
         /// One of: <c>licensed</c>, or <c>metered</c>.
         /// </summary>
         [JsonProperty("usage_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("usage_type")]
+#endif
         public string UsageType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Plans/PlanTier.cs b/src/Stripe.net/Entities/Plans/PlanTier.cs
index ca6e3e981d..323b055cdf 100644
--- a/src/Stripe.net/Entities/Plans/PlanTier.cs
+++ b/src/Stripe.net/Entities/Plans/PlanTier.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PlanTier : StripeEntity<PlanTier>
     {
@@ -9,30 +12,45 @@ public class PlanTier : StripeEntity<PlanTier>
         /// Price for the entire tier.
         /// </summary>
         [JsonProperty("flat_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flat_amount")]
+#endif
         public long? FlatAmount { get; set; }
 
         /// <summary>
         /// Same as <c>flat_amount</c>, but contains a decimal value with at most 12 decimal places.
         /// </summary>
         [JsonProperty("flat_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flat_amount_decimal")]
+#endif
         public decimal? FlatAmountDecimal { get; set; }
 
         /// <summary>
         /// Per unit price for units relevant to the tier.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
         /// Same as <c>unit_amount</c>, but contains a decimal value with at most 12 decimal places.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
 
         /// <summary>
         /// Up to and including to this quantity will be contained in the tier.
         /// </summary>
         [JsonProperty("up_to")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("up_to")]
+#endif
         public long? UpTo { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Plans/PlanTransformUsage.cs b/src/Stripe.net/Entities/Plans/PlanTransformUsage.cs
index 9071b333ad..f95e9e3a2f 100644
--- a/src/Stripe.net/Entities/Plans/PlanTransformUsage.cs
+++ b/src/Stripe.net/Entities/Plans/PlanTransformUsage.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PlanTransformUsage : StripeEntity<PlanTransformUsage>
     {
@@ -9,6 +12,9 @@ public class PlanTransformUsage : StripeEntity<PlanTransformUsage>
         /// Divide usage by this number.
         /// </summary>
         [JsonProperty("divide_by")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("divide_by")]
+#endif
         public long DivideBy { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class PlanTransformUsage : StripeEntity<PlanTransformUsage>
         /// One of: <c>down</c>, or <c>up</c>.
         /// </summary>
         [JsonProperty("round")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("round")]
+#endif
         public string Round { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Prices/Price.cs b/src/Stripe.net/Entities/Prices/Price.cs
index 5ea7df5591..1528697c9a 100644
--- a/src/Stripe.net/Entities/Prices/Price.cs
+++ b/src/Stripe.net/Entities/Prices/Price.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Prices define the unit cost, currency, and (optional) billing cycle for both recurring
@@ -24,24 +27,36 @@ namespace Stripe
     /// invoice</a>, and more about <a
     /// href="https://stripe.com/docs/products-prices/overview">products and prices</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class Price : StripeEntity<Price>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Whether the price can be used for new purchases.
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool Active { get; set; }
 
         /// <summary>
@@ -55,6 +70,9 @@ public class Price : StripeEntity<Price>, IHasId, IHasMetadata, IHasObject
         /// One of: <c>per_unit</c>, or <c>tiered</c>.
         /// </summary>
         [JsonProperty("billing_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_scheme")]
+#endif
         public string BillingScheme { get; set; }
 
         /// <summary>
@@ -62,6 +80,10 @@ public class Price : StripeEntity<Price>, IHasId, IHasMetadata, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -70,6 +92,9 @@ public class Price : StripeEntity<Price>, IHasId, IHasMetadata, IHasObject
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -78,6 +103,9 @@ public class Price : StripeEntity<Price>, IHasId, IHasMetadata, IHasObject
         /// href="https://stripe.com/docs/currencies">supported currency</a>.
         /// </summary>
         [JsonProperty("currency_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency_options")]
+#endif
         public Dictionary<string, PriceCurrencyOptions> CurrencyOptions { get; set; }
 
         /// <summary>
@@ -85,12 +113,19 @@ public class Price : StripeEntity<Price>, IHasId, IHasMetadata, IHasObject
         /// Checkout Sessions and Payment Links.
         /// </summary>
         [JsonProperty("custom_unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_unit_amount")]
+#endif
         public PriceCustomUnitAmount CustomUnitAmount { get; set; }
 
         /// <summary>
         /// Whether this object is deleted or not.
         /// </summary>
         [JsonProperty("deleted", NullValueHandling = NullValueHandling.Ignore)]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+        [STJS.JsonIgnore(Condition = STJS.JsonIgnoreCondition.WhenWritingNull)]
+#endif
         public bool? Deleted { get; set; }
 
         /// <summary>
@@ -98,6 +133,9 @@ public class Price : StripeEntity<Price>, IHasId, IHasMetadata, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -105,6 +143,9 @@ public class Price : StripeEntity<Price>, IHasId, IHasMetadata, IHasObject
         /// 200 characters.
         /// </summary>
         [JsonProperty("lookup_key")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lookup_key")]
+#endif
         public string LookupKey { get; set; }
 
         /// <summary>
@@ -113,12 +154,18 @@ public class Price : StripeEntity<Price>, IHasId, IHasMetadata, IHasObject
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// A brief description of the price, hidden from customers.
         /// </summary>
         [JsonProperty("nickname")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("nickname")]
+#endif
         public string Nickname { get; set; }
 
         #region Expandable Product
@@ -128,6 +175,9 @@ public class Price : StripeEntity<Price>, IHasId, IHasMetadata, IHasObject
         /// The ID of the product this price is associated with.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ProductId
         {
             get => this.InternalProduct?.Id;
@@ -141,6 +191,9 @@ public string ProductId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Product Product
         {
             get => this.InternalProduct?.ExpandedObject;
@@ -149,6 +202,10 @@ public Product Product
 
         [JsonProperty("product")]
         [JsonConverter(typeof(ExpandableFieldConverter<Product>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Product>))]
+#endif
         internal ExpandableField<Product> InternalProduct { get; set; }
         #endregion
 
@@ -156,6 +213,9 @@ public Product Product
         /// The recurring components of a price such as <c>interval</c> and <c>usage_type</c>.
         /// </summary>
         [JsonProperty("recurring")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("recurring")]
+#endif
         public PriceRecurring Recurring { get; set; }
 
         /// <summary>
@@ -168,6 +228,9 @@ public Product Product
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
@@ -175,6 +238,9 @@ public Product Product
         /// be set to <c>tiered</c>. See also the documentation for <c>billing_scheme</c>.
         /// </summary>
         [JsonProperty("tiers")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tiers")]
+#endif
         public List<PriceTier> Tiers { get; set; }
 
         /// <summary>
@@ -184,6 +250,9 @@ public Product Product
         /// One of: <c>graduated</c>, or <c>volume</c>.
         /// </summary>
         [JsonProperty("tiers_mode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tiers_mode")]
+#endif
         public string TiersMode { get; set; }
 
         /// <summary>
@@ -191,6 +260,9 @@ public Product Product
         /// billed. Cannot be combined with <c>tiers</c>.
         /// </summary>
         [JsonProperty("transform_quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transform_quantity")]
+#endif
         public PriceTransformQuantity TransformQuantity { get; set; }
 
         /// <summary>
@@ -199,6 +271,9 @@ public Product Product
         /// One of: <c>one_time</c>, or <c>recurring</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
@@ -206,6 +281,9 @@ public Product Product
         /// integer if possible. Only set if <c>billing_scheme=per_unit</c>.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
@@ -213,6 +291,9 @@ public Product Product
         /// string with at most 12 decimal places. Only set if <c>billing_scheme=per_unit</c>.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Prices/PriceCurrencyOptions.cs b/src/Stripe.net/Entities/Prices/PriceCurrencyOptions.cs
index 99f3dc6664..ffc5fe4635 100644
--- a/src/Stripe.net/Entities/Prices/PriceCurrencyOptions.cs
+++ b/src/Stripe.net/Entities/Prices/PriceCurrencyOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PriceCurrencyOptions : StripeEntity<PriceCurrencyOptions>
     {
@@ -11,6 +14,9 @@ public class PriceCurrencyOptions : StripeEntity<PriceCurrencyOptions>
         /// Checkout Sessions and Payment Links.
         /// </summary>
         [JsonProperty("custom_unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_unit_amount")]
+#endif
         public PriceCurrencyOptionsCustomUnitAmount CustomUnitAmount { get; set; }
 
         /// <summary>
@@ -23,6 +29,9 @@ public class PriceCurrencyOptions : StripeEntity<PriceCurrencyOptions>
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
@@ -30,6 +39,9 @@ public class PriceCurrencyOptions : StripeEntity<PriceCurrencyOptions>
         /// be set to <c>tiered</c>. See also the documentation for <c>billing_scheme</c>.
         /// </summary>
         [JsonProperty("tiers")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tiers")]
+#endif
         public List<PriceCurrencyOptionsTier> Tiers { get; set; }
 
         /// <summary>
@@ -37,6 +49,9 @@ public class PriceCurrencyOptions : StripeEntity<PriceCurrencyOptions>
         /// integer if possible. Only set if <c>billing_scheme=per_unit</c>.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
@@ -44,6 +59,9 @@ public class PriceCurrencyOptions : StripeEntity<PriceCurrencyOptions>
         /// string with at most 12 decimal places. Only set if <c>billing_scheme=per_unit</c>.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Prices/PriceCurrencyOptionsCustomUnitAmount.cs b/src/Stripe.net/Entities/Prices/PriceCurrencyOptionsCustomUnitAmount.cs
index ebcfc4a905..c0ff134a0b 100644
--- a/src/Stripe.net/Entities/Prices/PriceCurrencyOptionsCustomUnitAmount.cs
+++ b/src/Stripe.net/Entities/Prices/PriceCurrencyOptionsCustomUnitAmount.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PriceCurrencyOptionsCustomUnitAmount : StripeEntity<PriceCurrencyOptionsCustomUnitAmount>
     {
@@ -9,6 +12,9 @@ public class PriceCurrencyOptionsCustomUnitAmount : StripeEntity<PriceCurrencyOp
         /// The maximum unit amount the customer can specify for this item.
         /// </summary>
         [JsonProperty("maximum")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("maximum")]
+#endif
         public long? Maximum { get; set; }
 
         /// <summary>
@@ -16,12 +22,18 @@ public class PriceCurrencyOptionsCustomUnitAmount : StripeEntity<PriceCurrencyOp
         /// minimum charge amount.
         /// </summary>
         [JsonProperty("minimum")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("minimum")]
+#endif
         public long? Minimum { get; set; }
 
         /// <summary>
         /// The starting unit amount which can be updated by the customer.
         /// </summary>
         [JsonProperty("preset")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preset")]
+#endif
         public long? Preset { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Prices/PriceCurrencyOptionsTier.cs b/src/Stripe.net/Entities/Prices/PriceCurrencyOptionsTier.cs
index a9cd57d872..2f649cad74 100644
--- a/src/Stripe.net/Entities/Prices/PriceCurrencyOptionsTier.cs
+++ b/src/Stripe.net/Entities/Prices/PriceCurrencyOptionsTier.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PriceCurrencyOptionsTier : StripeEntity<PriceCurrencyOptionsTier>
     {
@@ -9,30 +12,45 @@ public class PriceCurrencyOptionsTier : StripeEntity<PriceCurrencyOptionsTier>
         /// Price for the entire tier.
         /// </summary>
         [JsonProperty("flat_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flat_amount")]
+#endif
         public long? FlatAmount { get; set; }
 
         /// <summary>
         /// Same as <c>flat_amount</c>, but contains a decimal value with at most 12 decimal places.
         /// </summary>
         [JsonProperty("flat_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flat_amount_decimal")]
+#endif
         public decimal? FlatAmountDecimal { get; set; }
 
         /// <summary>
         /// Per unit price for units relevant to the tier.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
         /// Same as <c>unit_amount</c>, but contains a decimal value with at most 12 decimal places.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
 
         /// <summary>
         /// Up to and including to this quantity will be contained in the tier.
         /// </summary>
         [JsonProperty("up_to")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("up_to")]
+#endif
         public long? UpTo { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Prices/PriceCustomUnitAmount.cs b/src/Stripe.net/Entities/Prices/PriceCustomUnitAmount.cs
index ab48410b43..ba5a83d5d2 100644
--- a/src/Stripe.net/Entities/Prices/PriceCustomUnitAmount.cs
+++ b/src/Stripe.net/Entities/Prices/PriceCustomUnitAmount.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PriceCustomUnitAmount : StripeEntity<PriceCustomUnitAmount>
     {
@@ -9,6 +12,9 @@ public class PriceCustomUnitAmount : StripeEntity<PriceCustomUnitAmount>
         /// The maximum unit amount the customer can specify for this item.
         /// </summary>
         [JsonProperty("maximum")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("maximum")]
+#endif
         public long? Maximum { get; set; }
 
         /// <summary>
@@ -16,12 +22,18 @@ public class PriceCustomUnitAmount : StripeEntity<PriceCustomUnitAmount>
         /// minimum charge amount.
         /// </summary>
         [JsonProperty("minimum")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("minimum")]
+#endif
         public long? Minimum { get; set; }
 
         /// <summary>
         /// The starting unit amount which can be updated by the customer.
         /// </summary>
         [JsonProperty("preset")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preset")]
+#endif
         public long? Preset { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Prices/PriceRecurring.cs b/src/Stripe.net/Entities/Prices/PriceRecurring.cs
index ac736f9691..2ecf132afe 100644
--- a/src/Stripe.net/Entities/Prices/PriceRecurring.cs
+++ b/src/Stripe.net/Entities/Prices/PriceRecurring.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PriceRecurring : StripeEntity<PriceRecurring>
     {
@@ -11,6 +14,9 @@ public class PriceRecurring : StripeEntity<PriceRecurring>
         /// One of: <c>last_during_period</c>, <c>last_ever</c>, <c>max</c>, or <c>sum</c>.
         /// </summary>
         [JsonProperty("aggregate_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("aggregate_usage")]
+#endif
         public string AggregateUsage { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class PriceRecurring : StripeEntity<PriceRecurring>
         /// One of: <c>day</c>, <c>month</c>, <c>week</c>, or <c>year</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
 
         /// <summary>
@@ -27,12 +36,18 @@ public class PriceRecurring : StripeEntity<PriceRecurring>
         /// bills every 3 months.
         /// </summary>
         [JsonProperty("interval_count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_count")]
+#endif
         public long IntervalCount { get; set; }
 
         /// <summary>
         /// The meter tracking the usage of a metered price.
         /// </summary>
         [JsonProperty("meter")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("meter")]
+#endif
         public string Meter { get; set; }
 
         /// <summary>
@@ -40,6 +55,9 @@ public class PriceRecurring : StripeEntity<PriceRecurring>
         /// href="https://stripe.com/docs/api#create_subscription-trial_from_plan"><c>trial_from_plan=true</c></a>.
         /// </summary>
         [JsonProperty("trial_period_days")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_period_days")]
+#endif
         public long? TrialPeriodDays { get; set; }
 
         /// <summary>
@@ -50,6 +68,9 @@ public class PriceRecurring : StripeEntity<PriceRecurring>
         /// One of: <c>licensed</c>, or <c>metered</c>.
         /// </summary>
         [JsonProperty("usage_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("usage_type")]
+#endif
         public string UsageType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Prices/PriceTier.cs b/src/Stripe.net/Entities/Prices/PriceTier.cs
index 614f3f0d01..254f64cd77 100644
--- a/src/Stripe.net/Entities/Prices/PriceTier.cs
+++ b/src/Stripe.net/Entities/Prices/PriceTier.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PriceTier : StripeEntity<PriceTier>
     {
@@ -9,30 +12,45 @@ public class PriceTier : StripeEntity<PriceTier>
         /// Price for the entire tier.
         /// </summary>
         [JsonProperty("flat_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flat_amount")]
+#endif
         public long? FlatAmount { get; set; }
 
         /// <summary>
         /// Same as <c>flat_amount</c>, but contains a decimal value with at most 12 decimal places.
         /// </summary>
         [JsonProperty("flat_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flat_amount_decimal")]
+#endif
         public decimal? FlatAmountDecimal { get; set; }
 
         /// <summary>
         /// Per unit price for units relevant to the tier.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
         /// Same as <c>unit_amount</c>, but contains a decimal value with at most 12 decimal places.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
 
         /// <summary>
         /// Up to and including to this quantity will be contained in the tier.
         /// </summary>
         [JsonProperty("up_to")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("up_to")]
+#endif
         public long? UpTo { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Prices/PriceTransformQuantity.cs b/src/Stripe.net/Entities/Prices/PriceTransformQuantity.cs
index fc373e128d..b26b4e2cb2 100644
--- a/src/Stripe.net/Entities/Prices/PriceTransformQuantity.cs
+++ b/src/Stripe.net/Entities/Prices/PriceTransformQuantity.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PriceTransformQuantity : StripeEntity<PriceTransformQuantity>
     {
@@ -9,6 +12,9 @@ public class PriceTransformQuantity : StripeEntity<PriceTransformQuantity>
         /// Divide usage by this number.
         /// </summary>
         [JsonProperty("divide_by")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("divide_by")]
+#endif
         public long DivideBy { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class PriceTransformQuantity : StripeEntity<PriceTransformQuantity>
         /// One of: <c>down</c>, or <c>up</c>.
         /// </summary>
         [JsonProperty("round")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("round")]
+#endif
         public string Round { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ProductFeatures/ProductFeature.cs b/src/Stripe.net/Entities/ProductFeatures/ProductFeature.cs
index 8b7afa9561..debc620aa8 100644
--- a/src/Stripe.net/Entities/ProductFeatures/ProductFeature.cs
+++ b/src/Stripe.net/Entities/ProductFeatures/ProductFeature.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A product_feature represents an attachment between a feature and a product. When a
@@ -14,18 +17,28 @@ public class ProductFeature : StripeEntity<ProductFeature>, IHasId, IHasObject
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Whether this object is deleted or not.
         /// </summary>
         [JsonProperty("deleted", NullValueHandling = NullValueHandling.Ignore)]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+        [STJS.JsonIgnore(Condition = STJS.JsonIgnoreCondition.WhenWritingNull)]
+#endif
         public bool? Deleted { get; set; }
 
         /// <summary>
@@ -34,6 +47,9 @@ public class ProductFeature : StripeEntity<ProductFeature>, IHasId, IHasObject
         /// entitlement to the feature for the purchasing customer.
         /// </summary>
         [JsonProperty("entitlement_feature")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("entitlement_feature")]
+#endif
         public Entitlements.Feature EntitlementFeature { get; set; }
 
         /// <summary>
@@ -41,6 +57,9 @@ public class ProductFeature : StripeEntity<ProductFeature>, IHasId, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Products/PackageDimensions.cs b/src/Stripe.net/Entities/Products/PackageDimensions.cs
index bc8431c478..c10555960f 100644
--- a/src/Stripe.net/Entities/Products/PackageDimensions.cs
+++ b/src/Stripe.net/Entities/Products/PackageDimensions.cs
@@ -1,19 +1,34 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PackageDimensions : StripeEntity<PackageDimensions>
     {
         [JsonProperty("height")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("height")]
+#endif
         public decimal? Height { get; set; }
 
         [JsonProperty("length")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("length")]
+#endif
         public decimal? Length { get; set; }
 
         [JsonProperty("weight")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("weight")]
+#endif
         public decimal? Weight { get; set; }
 
         [JsonProperty("width")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("width")]
+#endif
         public decimal? Width { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Products/Product.cs b/src/Stripe.net/Entities/Products/Product.cs
index fa48aea2f8..44249cdc64 100644
--- a/src/Stripe.net/Entities/Products/Product.cs
+++ b/src/Stripe.net/Entities/Products/Product.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Products describe the specific goods or services you offer to your customers. For
@@ -21,24 +24,36 @@ namespace Stripe
     /// payments with Checkout</a>, and more about <a
     /// href="https://stripe.com/docs/products-prices/overview">Products and Prices</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class Product : StripeEntity<Product>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Whether the product is currently available for purchase.
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool Active { get; set; }
 
         /// <summary>
@@ -46,6 +61,10 @@ public class Product : StripeEntity<Product>, IHasId, IHasMetadata, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         #region Expandable DefaultPrice
@@ -56,6 +75,9 @@ public class Product : StripeEntity<Product>, IHasId, IHasMetadata, IHasObject
         /// default price for this product.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DefaultPriceId
         {
             get => this.InternalDefaultPrice?.Id;
@@ -70,6 +92,9 @@ public string DefaultPriceId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Price DefaultPrice
         {
             get => this.InternalDefaultPrice?.ExpandedObject;
@@ -78,6 +103,10 @@ public Price DefaultPrice
 
         [JsonProperty("default_price")]
         [JsonConverter(typeof(ExpandableFieldConverter<Price>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_price")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Price>))]
+#endif
         internal ExpandableField<Price> InternalDefaultPrice { get; set; }
         #endregion
 
@@ -85,6 +114,10 @@ public Price DefaultPrice
         /// Whether this object is deleted or not.
         /// </summary>
         [JsonProperty("deleted", NullValueHandling = NullValueHandling.Ignore)]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+        [STJS.JsonIgnore(Condition = STJS.JsonIgnoreCondition.WhenWritingNull)]
+#endif
         public bool? Deleted { get; set; }
 
         /// <summary>
@@ -93,6 +126,9 @@ public Price DefaultPrice
         /// rendering purposes.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -100,6 +136,9 @@ public Price DefaultPrice
         /// customer.
         /// </summary>
         [JsonProperty("images")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("images")]
+#endif
         public List<string> Images { get; set; }
 
         /// <summary>
@@ -107,6 +146,9 @@ public Price DefaultPrice
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -114,6 +156,9 @@ public Price DefaultPrice
         /// href="https://stripe.com/docs/payments/checkout/pricing-table">pricing tables</a>.
         /// </summary>
         [JsonProperty("marketing_features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("marketing_features")]
+#endif
         public List<ProductMarketingFeature> MarketingFeatures { get; set; }
 
         /// <summary>
@@ -122,24 +167,36 @@ public Price DefaultPrice
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The product's name, meant to be displayable to the customer.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// The dimensions of this product for shipping purposes.
         /// </summary>
         [JsonProperty("package_dimensions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("package_dimensions")]
+#endif
         public ProductPackageDimensions PackageDimensions { get; set; }
 
         /// <summary>
         /// Whether this product is shipped (i.e., physical goods).
         /// </summary>
         [JsonProperty("shippable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shippable")]
+#endif
         public bool? Shippable { get; set; }
 
         /// <summary>
@@ -148,6 +205,9 @@ public Price DefaultPrice
         /// descriptor will be used. Only used for subscription payments.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
 
         #region Expandable TaxCode
@@ -157,6 +217,9 @@ public Price DefaultPrice
         /// A <a href="https://stripe.com/docs/tax/tax-categories">tax code</a> ID.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string TaxCodeId
         {
             get => this.InternalTaxCode?.Id;
@@ -170,6 +233,9 @@ public string TaxCodeId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public TaxCode TaxCode
         {
             get => this.InternalTaxCode?.ExpandedObject;
@@ -178,6 +244,10 @@ public TaxCode TaxCode
 
         [JsonProperty("tax_code")]
         [JsonConverter(typeof(ExpandableFieldConverter<TaxCode>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_code")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<TaxCode>))]
+#endif
         internal ExpandableField<TaxCode> InternalTaxCode { get; set; }
         #endregion
 
@@ -188,6 +258,9 @@ public TaxCode TaxCode
         /// One of: <c>good</c>, or <c>service</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
@@ -195,6 +268,9 @@ public TaxCode TaxCode
         /// customers' receipts, invoices, Checkout, and the customer portal.
         /// </summary>
         [JsonProperty("unit_label")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_label")]
+#endif
         public string UnitLabel { get; set; }
 
         /// <summary>
@@ -202,12 +278,19 @@ public TaxCode TaxCode
         /// </summary>
         [JsonProperty("updated")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("updated")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Updated { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// A URL of a publicly-accessible webpage for this product.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Products/ProductMarketingFeature.cs b/src/Stripe.net/Entities/Products/ProductMarketingFeature.cs
index f69d98bc02..684b8669a7 100644
--- a/src/Stripe.net/Entities/Products/ProductMarketingFeature.cs
+++ b/src/Stripe.net/Entities/Products/ProductMarketingFeature.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ProductMarketingFeature : StripeEntity<ProductMarketingFeature>
     {
@@ -9,6 +12,9 @@ public class ProductMarketingFeature : StripeEntity<ProductMarketingFeature>
         /// The marketing feature name. Up to 80 characters long.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Products/ProductPackageDimensions.cs b/src/Stripe.net/Entities/Products/ProductPackageDimensions.cs
index 0fad504b2f..2cb2a075f7 100644
--- a/src/Stripe.net/Entities/Products/ProductPackageDimensions.cs
+++ b/src/Stripe.net/Entities/Products/ProductPackageDimensions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ProductPackageDimensions : StripeEntity<ProductPackageDimensions>
     {
@@ -9,24 +12,36 @@ public class ProductPackageDimensions : StripeEntity<ProductPackageDimensions>
         /// Height, in inches.
         /// </summary>
         [JsonProperty("height")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("height")]
+#endif
         public decimal Height { get; set; }
 
         /// <summary>
         /// Length, in inches.
         /// </summary>
         [JsonProperty("length")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("length")]
+#endif
         public decimal Length { get; set; }
 
         /// <summary>
         /// Weight, in ounces.
         /// </summary>
         [JsonProperty("weight")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("weight")]
+#endif
         public decimal Weight { get; set; }
 
         /// <summary>
         /// Width, in inches.
         /// </summary>
         [JsonProperty("width")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("width")]
+#endif
         public decimal Width { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PromotionCodes/PromotionCode.cs b/src/Stripe.net/Entities/PromotionCodes/PromotionCode.cs
index fcb5d8dfe0..193fa0de69 100644
--- a/src/Stripe.net/Entities/PromotionCodes/PromotionCode.cs
+++ b/src/Stripe.net/Entities/PromotionCodes/PromotionCode.cs
@@ -5,24 +5,36 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A Promotion Code represents a customer-redeemable code for a <a
     /// href="https://stripe.com/docs/api#coupons">coupon</a>. It can be used to create multiple
     /// codes for a single coupon.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class PromotionCode : StripeEntity<PromotionCode>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -30,6 +42,9 @@ public class PromotionCode : StripeEntity<PromotionCode>, IHasId, IHasMetadata,
         /// coupon is also valid.
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool Active { get; set; }
 
         /// <summary>
@@ -38,6 +53,9 @@ public class PromotionCode : StripeEntity<PromotionCode>, IHasId, IHasMetadata,
         /// case letters (A-Z), and digits (0-9).
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
@@ -51,6 +69,9 @@ public class PromotionCode : StripeEntity<PromotionCode>, IHasId, IHasMetadata,
         /// <a href="https://stripe.com/docs/api/payment_intents">payment intents</a>.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public Coupon Coupon { get; set; }
 
         /// <summary>
@@ -58,6 +79,10 @@ public class PromotionCode : StripeEntity<PromotionCode>, IHasId, IHasMetadata,
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         #region Expandable Customer
@@ -67,6 +92,9 @@ public class PromotionCode : StripeEntity<PromotionCode>, IHasId, IHasMetadata,
         /// The customer that this promotion code can be used by.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerId
         {
             get => this.InternalCustomer?.Id;
@@ -80,6 +108,9 @@ public string CustomerId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Customer Customer
         {
             get => this.InternalCustomer?.ExpandedObject;
@@ -88,6 +119,10 @@ public Customer Customer
 
         [JsonProperty("customer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Customer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Customer>))]
+#endif
         internal ExpandableField<Customer> InternalCustomer { get; set; }
         #endregion
 
@@ -96,6 +131,10 @@ public Customer Customer
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpiresAt { get; set; }
 
         /// <summary>
@@ -103,12 +142,18 @@ public Customer Customer
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
         /// Maximum number of times this promotion code can be redeemed.
         /// </summary>
         [JsonProperty("max_redemptions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("max_redemptions")]
+#endif
         public long? MaxRedemptions { get; set; }
 
         /// <summary>
@@ -117,15 +162,24 @@ public Customer Customer
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         [JsonProperty("restrictions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("restrictions")]
+#endif
         public PromotionCodeRestrictions Restrictions { get; set; }
 
         /// <summary>
         /// Number of times this promotion code has been used.
         /// </summary>
         [JsonProperty("times_redeemed")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("times_redeemed")]
+#endif
         public long TimesRedeemed { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PromotionCodes/PromotionCodeRestrictions.cs b/src/Stripe.net/Entities/PromotionCodes/PromotionCodeRestrictions.cs
index 7256e76feb..cf9b46702a 100644
--- a/src/Stripe.net/Entities/PromotionCodes/PromotionCodeRestrictions.cs
+++ b/src/Stripe.net/Entities/PromotionCodes/PromotionCodeRestrictions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PromotionCodeRestrictions : StripeEntity<PromotionCodeRestrictions>
     {
@@ -12,6 +15,9 @@ public class PromotionCodeRestrictions : StripeEntity<PromotionCodeRestrictions>
         /// code</a> and a <a href="https://stripe.com/docs/currencies">supported currency</a>.
         /// </summary>
         [JsonProperty("currency_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency_options")]
+#endif
         public Dictionary<string, PromotionCodeRestrictionsCurrencyOptions> CurrencyOptions { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class PromotionCodeRestrictions : StripeEntity<PromotionCodeRestrictions>
         /// any successful payments or invoices.
         /// </summary>
         [JsonProperty("first_time_transaction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_time_transaction")]
+#endif
         public bool FirstTimeTransaction { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class PromotionCodeRestrictions : StripeEntity<PromotionCodeRestrictions>
         /// must be $100 or more to work).
         /// </summary>
         [JsonProperty("minimum_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("minimum_amount")]
+#endif
         public long? MinimumAmount { get; set; }
 
         /// <summary>
@@ -33,6 +45,9 @@ public class PromotionCodeRestrictions : StripeEntity<PromotionCodeRestrictions>
         /// minimum_amount.
         /// </summary>
         [JsonProperty("minimum_amount_currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("minimum_amount_currency")]
+#endif
         public string MinimumAmountCurrency { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/PromotionCodes/PromotionCodeRestrictionsCurrencyOptions.cs b/src/Stripe.net/Entities/PromotionCodes/PromotionCodeRestrictionsCurrencyOptions.cs
index 2835af6f87..01833565ff 100644
--- a/src/Stripe.net/Entities/PromotionCodes/PromotionCodeRestrictionsCurrencyOptions.cs
+++ b/src/Stripe.net/Entities/PromotionCodes/PromotionCodeRestrictionsCurrencyOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PromotionCodeRestrictionsCurrencyOptions : StripeEntity<PromotionCodeRestrictionsCurrencyOptions>
     {
@@ -10,6 +13,9 @@ public class PromotionCodeRestrictionsCurrencyOptions : StripeEntity<PromotionCo
         /// must be $100 or more to work).
         /// </summary>
         [JsonProperty("minimum_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("minimum_amount")]
+#endif
         public long MinimumAmount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Quotes/Quote.cs b/src/Stripe.net/Entities/Quotes/Quote.cs
index d3953325cd..16130ca8bb 100644
--- a/src/Stripe.net/Entities/Quotes/Quote.cs
+++ b/src/Stripe.net/Entities/Quotes/Quote.cs
@@ -6,36 +6,54 @@ namespace Stripe
     using System.Linq;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A Quote is a way to model prices that you'd like to provide to a customer. Once
     /// accepted, it will automatically create an invoice, subscription or subscription
     /// schedule.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class Quote : StripeEntity<Quote>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Total before any discounts or taxes are applied.
         /// </summary>
         [JsonProperty("amount_subtotal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_subtotal")]
+#endif
         public long AmountSubtotal { get; set; }
 
         /// <summary>
         /// Total after discounts and taxes are applied.
         /// </summary>
         [JsonProperty("amount_total")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_total")]
+#endif
         public long AmountTotal { get; set; }
 
         #region Expandable Application
@@ -45,6 +63,9 @@ public class Quote : StripeEntity<Quote>, IHasId, IHasMetadata, IHasObject
         /// ID of the Connect Application that created the quote.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ApplicationId
         {
             get => this.InternalApplication?.Id;
@@ -58,6 +79,9 @@ public string ApplicationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Application Application
         {
             get => this.InternalApplication?.ExpandedObject;
@@ -66,6 +90,10 @@ public Application Application
 
         [JsonProperty("application")]
         [JsonConverter(typeof(ExpandableFieldConverter<Application>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Application>))]
+#endif
         internal ExpandableField<Application> InternalApplication { get; set; }
         #endregion
 
@@ -75,6 +103,9 @@ public Application Application
         /// there are no line items with recurring prices on the quote.
         /// </summary>
         [JsonProperty("application_fee_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_amount")]
+#endif
         public long? ApplicationFeeAmount { get; set; }
 
         /// <summary>
@@ -84,9 +115,15 @@ public Application Application
         /// recurring prices on the quote.
         /// </summary>
         [JsonProperty("application_fee_percent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_percent")]
+#endif
         public decimal? ApplicationFeePercent { get; set; }
 
         [JsonProperty("automatic_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatic_tax")]
+#endif
         public QuoteAutomaticTax AutomaticTax { get; set; }
 
         /// <summary>
@@ -99,9 +136,15 @@ public Application Application
         /// One of: <c>charge_automatically</c>, or <c>send_invoice</c>.
         /// </summary>
         [JsonProperty("collection_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("collection_method")]
+#endif
         public string CollectionMethod { get; set; }
 
         [JsonProperty("computed")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("computed")]
+#endif
         public QuoteComputed Computed { get; set; }
 
         /// <summary>
@@ -109,6 +152,10 @@ public Application Application
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -117,6 +164,9 @@ public Application Application
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         #region Expandable Customer
@@ -127,6 +177,9 @@ public Application Application
         /// quote. Once specified, it cannot be changed.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerId
         {
             get => this.InternalCustomer?.Id;
@@ -141,6 +194,9 @@ public string CustomerId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Customer Customer
         {
             get => this.InternalCustomer?.ExpandedObject;
@@ -149,6 +205,10 @@ public Customer Customer
 
         [JsonProperty("customer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Customer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Customer>))]
+#endif
         internal ExpandableField<Customer> InternalCustomer { get; set; }
         #endregion
 
@@ -159,6 +219,9 @@ public Customer Customer
         /// The tax rates applied to this quote.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public List<string> DefaultTaxRateIds
         {
             get => this.InternalDefaultTaxRates?.Select((x) => x.Id).ToList();
@@ -172,6 +235,9 @@ public List<string> DefaultTaxRateIds
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public List<TaxRate> DefaultTaxRates
         {
             get => this.InternalDefaultTaxRates?.Select((x) => x.ExpandedObject).ToList();
@@ -179,6 +245,9 @@ public List<TaxRate> DefaultTaxRates
         }
 
         [JsonProperty("default_tax_rates", ItemConverterType = typeof(ExpandableFieldConverter<TaxRate>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_tax_rates")]
+#endif
         internal List<ExpandableField<TaxRate>> InternalDefaultTaxRates { get; set; }
         #endregion
 
@@ -186,6 +255,9 @@ public List<TaxRate> DefaultTaxRates
         /// A description that will be displayed on the quote PDF.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         #region Expandable Discounts
@@ -195,6 +267,9 @@ public List<TaxRate> DefaultTaxRates
         /// The discounts applied to this quote.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public List<string> DiscountIds
         {
             get => this.InternalDiscounts?.Select((x) => x.Id).ToList();
@@ -208,6 +283,9 @@ public List<string> DiscountIds
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public List<Discount> Discounts
         {
             get => this.InternalDiscounts?.Select((x) => x.ExpandedObject).ToList();
@@ -215,6 +293,9 @@ public List<Discount> Discounts
         }
 
         [JsonProperty("discounts", ItemConverterType = typeof(ExpandableFieldConverter<Discount>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         internal List<ExpandableField<Discount>> InternalDiscounts { get; set; }
         #endregion
 
@@ -224,12 +305,19 @@ public List<Discount> Discounts
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime ExpiresAt { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// A footer that will be displayed on the quote PDF.
         /// </summary>
         [JsonProperty("footer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("footer")]
+#endif
         public string Footer { get; set; }
 
         /// <summary>
@@ -237,12 +325,18 @@ public List<Discount> Discounts
         /// href="https://stripe.com/docs/quotes/clone">cloning documentation</a> for more details.
         /// </summary>
         [JsonProperty("from_quote")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("from_quote")]
+#endif
         public QuoteFromQuote FromQuote { get; set; }
 
         /// <summary>
         /// A header that will be displayed on the quote PDF.
         /// </summary>
         [JsonProperty("header")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("header")]
+#endif
         public string Header { get; set; }
 
         #region Expandable Invoice
@@ -252,6 +346,9 @@ public List<Discount> Discounts
         /// The invoice that was created from this quote.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string InvoiceId
         {
             get => this.InternalInvoice?.Id;
@@ -265,6 +362,9 @@ public string InvoiceId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Invoice Invoice
         {
             get => this.InternalInvoice?.ExpandedObject;
@@ -273,16 +373,26 @@ public Invoice Invoice
 
         [JsonProperty("invoice")]
         [JsonConverter(typeof(ExpandableFieldConverter<Invoice>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Invoice>))]
+#endif
         internal ExpandableField<Invoice> InternalInvoice { get; set; }
         #endregion
 
         [JsonProperty("invoice_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_settings")]
+#endif
         public QuoteInvoiceSettings InvoiceSettings { get; set; }
 
         /// <summary>
         /// A list of items the customer is being quoted for.
         /// </summary>
         [JsonProperty("line_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line_items")]
+#endif
         public StripeList<LineItem> LineItems { get; set; }
 
         /// <summary>
@@ -290,6 +400,9 @@ public Invoice Invoice
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -298,6 +411,9 @@ public Invoice Invoice
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -305,6 +421,9 @@ public Invoice Invoice
         /// quote is <a href="https://stripe.com/docs/quotes/overview#finalize">finalized</a>.
         /// </summary>
         [JsonProperty("number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("number")]
+#endif
         public string Number { get; set; }
 
         #region Expandable OnBehalfOf
@@ -316,6 +435,9 @@ public Invoice Invoice
         /// documentation</a> for details.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string OnBehalfOfId
         {
             get => this.InternalOnBehalfOf?.Id;
@@ -331,6 +453,9 @@ public string OnBehalfOfId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account OnBehalfOf
         {
             get => this.InternalOnBehalfOf?.ExpandedObject;
@@ -339,6 +464,10 @@ public Account OnBehalfOf
 
         [JsonProperty("on_behalf_of")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalOnBehalfOf { get; set; }
         #endregion
 
@@ -347,9 +476,15 @@ public Account OnBehalfOf
         /// One of: <c>accepted</c>, <c>canceled</c>, <c>draft</c>, or <c>open</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         [JsonProperty("status_transitions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_transitions")]
+#endif
         public QuoteStatusTransitions StatusTransitions { get; set; }
 
         #region Expandable Subscription
@@ -359,6 +494,9 @@ public Account OnBehalfOf
         /// The subscription that was created or updated from this quote.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string SubscriptionId
         {
             get => this.InternalSubscription?.Id;
@@ -372,6 +510,9 @@ public string SubscriptionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Subscription Subscription
         {
             get => this.InternalSubscription?.ExpandedObject;
@@ -380,10 +521,17 @@ public Subscription Subscription
 
         [JsonProperty("subscription")]
         [JsonConverter(typeof(ExpandableFieldConverter<Subscription>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Subscription>))]
+#endif
         internal ExpandableField<Subscription> InternalSubscription { get; set; }
         #endregion
 
         [JsonProperty("subscription_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_data")]
+#endif
         public QuoteSubscriptionData SubscriptionData { get; set; }
 
         #region Expandable SubscriptionSchedule
@@ -393,6 +541,9 @@ public Subscription Subscription
         /// The subscription schedule that was created or updated from this quote.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string SubscriptionScheduleId
         {
             get => this.InternalSubscriptionSchedule?.Id;
@@ -406,6 +557,9 @@ public string SubscriptionScheduleId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public SubscriptionSchedule SubscriptionSchedule
         {
             get => this.InternalSubscriptionSchedule?.ExpandedObject;
@@ -414,6 +568,10 @@ public SubscriptionSchedule SubscriptionSchedule
 
         [JsonProperty("subscription_schedule")]
         [JsonConverter(typeof(ExpandableFieldConverter<SubscriptionSchedule>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_schedule")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<SubscriptionSchedule>))]
+#endif
         internal ExpandableField<SubscriptionSchedule> InternalSubscriptionSchedule { get; set; }
         #endregion
 
@@ -424,6 +582,9 @@ public SubscriptionSchedule SubscriptionSchedule
         /// ID of the test clock this quote belongs to.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string TestClockId
         {
             get => this.InternalTestClock?.Id;
@@ -437,6 +598,9 @@ public string TestClockId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public TestHelpers.TestClock TestClock
         {
             get => this.InternalTestClock?.ExpandedObject;
@@ -445,10 +609,17 @@ public TestHelpers.TestClock TestClock
 
         [JsonProperty("test_clock")]
         [JsonConverter(typeof(ExpandableFieldConverter<TestHelpers.TestClock>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("test_clock")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<TestHelpers.TestClock>))]
+#endif
         internal ExpandableField<TestHelpers.TestClock> InternalTestClock { get; set; }
         #endregion
 
         [JsonProperty("total_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("total_details")]
+#endif
         public QuoteTotalDetails TotalDetails { get; set; }
 
         /// <summary>
@@ -456,6 +627,9 @@ public TestHelpers.TestClock TestClock
         /// funds from each payment will be transferred to for each of the invoices.
         /// </summary>
         [JsonProperty("transfer_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_data")]
+#endif
         public QuoteTransferData TransferData { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Quotes/QuoteAutomaticTax.cs b/src/Stripe.net/Entities/Quotes/QuoteAutomaticTax.cs
index 2ec005658f..14510fa376 100644
--- a/src/Stripe.net/Entities/Quotes/QuoteAutomaticTax.cs
+++ b/src/Stripe.net/Entities/Quotes/QuoteAutomaticTax.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteAutomaticTax : StripeEntity<QuoteAutomaticTax>
     {
@@ -9,6 +12,9 @@ public class QuoteAutomaticTax : StripeEntity<QuoteAutomaticTax>
         /// Automatically calculate taxes.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class QuoteAutomaticTax : StripeEntity<QuoteAutomaticTax>
         /// transaction is returned in the report of the connected account.
         /// </summary>
         [JsonProperty("liability")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("liability")]
+#endif
         public QuoteAutomaticTaxLiability Liability { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class QuoteAutomaticTax : StripeEntity<QuoteAutomaticTax>
         /// One of: <c>complete</c>, <c>failed</c>, or <c>requires_location_inputs</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Quotes/QuoteAutomaticTaxLiability.cs b/src/Stripe.net/Entities/Quotes/QuoteAutomaticTaxLiability.cs
index 36c0615b1f..b59e447b95 100644
--- a/src/Stripe.net/Entities/Quotes/QuoteAutomaticTaxLiability.cs
+++ b/src/Stripe.net/Entities/Quotes/QuoteAutomaticTaxLiability.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class QuoteAutomaticTaxLiability : StripeEntity<QuoteAutomaticTaxLiability>
     {
         #region Expandable Account
@@ -13,6 +19,9 @@ public class QuoteAutomaticTaxLiability : StripeEntity<QuoteAutomaticTaxLiabilit
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AccountId
         {
             get => this.InternalAccount?.Id;
@@ -26,6 +35,9 @@ public string AccountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Account
         {
             get => this.InternalAccount?.ExpandedObject;
@@ -34,6 +46,10 @@ public Account Account
 
         [JsonProperty("account")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalAccount { get; set; }
         #endregion
 
@@ -42,6 +58,9 @@ public Account Account
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Quotes/QuoteComputed.cs b/src/Stripe.net/Entities/Quotes/QuoteComputed.cs
index 1aa6dacb69..02ae2a0ce2 100644
--- a/src/Stripe.net/Entities/Quotes/QuoteComputed.cs
+++ b/src/Stripe.net/Entities/Quotes/QuoteComputed.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteComputed : StripeEntity<QuoteComputed>
     {
@@ -12,9 +15,15 @@ public class QuoteComputed : StripeEntity<QuoteComputed>
         /// with recurring prices.
         /// </summary>
         [JsonProperty("recurring")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("recurring")]
+#endif
         public QuoteComputedRecurring Recurring { get; set; }
 
         [JsonProperty("upfront")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("upfront")]
+#endif
         public QuoteComputedUpfront Upfront { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Quotes/QuoteComputedRecurring.cs b/src/Stripe.net/Entities/Quotes/QuoteComputedRecurring.cs
index 036d6a61fa..05bc5520dc 100644
--- a/src/Stripe.net/Entities/Quotes/QuoteComputedRecurring.cs
+++ b/src/Stripe.net/Entities/Quotes/QuoteComputedRecurring.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteComputedRecurring : StripeEntity<QuoteComputedRecurring>
     {
@@ -9,12 +12,18 @@ public class QuoteComputedRecurring : StripeEntity<QuoteComputedRecurring>
         /// Total before any discounts or taxes are applied.
         /// </summary>
         [JsonProperty("amount_subtotal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_subtotal")]
+#endif
         public long AmountSubtotal { get; set; }
 
         /// <summary>
         /// Total after discounts and taxes are applied.
         /// </summary>
         [JsonProperty("amount_total")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_total")]
+#endif
         public long AmountTotal { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class QuoteComputedRecurring : StripeEntity<QuoteComputedRecurring>
         /// One of: <c>day</c>, <c>month</c>, <c>week</c>, or <c>year</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
 
         /// <summary>
@@ -31,9 +43,15 @@ public class QuoteComputedRecurring : StripeEntity<QuoteComputedRecurring>
         /// bills every 3 months.
         /// </summary>
         [JsonProperty("interval_count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_count")]
+#endif
         public long IntervalCount { get; set; }
 
         [JsonProperty("total_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("total_details")]
+#endif
         public QuoteComputedRecurringTotalDetails TotalDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Quotes/QuoteComputedRecurringTotalDetails.cs b/src/Stripe.net/Entities/Quotes/QuoteComputedRecurringTotalDetails.cs
index 9a4cab9308..d322459f23 100644
--- a/src/Stripe.net/Entities/Quotes/QuoteComputedRecurringTotalDetails.cs
+++ b/src/Stripe.net/Entities/Quotes/QuoteComputedRecurringTotalDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteComputedRecurringTotalDetails : StripeEntity<QuoteComputedRecurringTotalDetails>
     {
@@ -9,21 +12,33 @@ public class QuoteComputedRecurringTotalDetails : StripeEntity<QuoteComputedRecu
         /// This is the sum of all the discounts.
         /// </summary>
         [JsonProperty("amount_discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_discount")]
+#endif
         public long AmountDiscount { get; set; }
 
         /// <summary>
         /// This is the sum of all the shipping amounts.
         /// </summary>
         [JsonProperty("amount_shipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_shipping")]
+#endif
         public long? AmountShipping { get; set; }
 
         /// <summary>
         /// This is the sum of all the tax amounts.
         /// </summary>
         [JsonProperty("amount_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_tax")]
+#endif
         public long AmountTax { get; set; }
 
         [JsonProperty("breakdown")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("breakdown")]
+#endif
         public QuoteComputedRecurringTotalDetailsBreakdown Breakdown { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Quotes/QuoteComputedRecurringTotalDetailsBreakdown.cs b/src/Stripe.net/Entities/Quotes/QuoteComputedRecurringTotalDetailsBreakdown.cs
index 72164b36e0..55316bed10 100644
--- a/src/Stripe.net/Entities/Quotes/QuoteComputedRecurringTotalDetailsBreakdown.cs
+++ b/src/Stripe.net/Entities/Quotes/QuoteComputedRecurringTotalDetailsBreakdown.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteComputedRecurringTotalDetailsBreakdown : StripeEntity<QuoteComputedRecurringTotalDetailsBreakdown>
     {
@@ -10,12 +13,18 @@ public class QuoteComputedRecurringTotalDetailsBreakdown : StripeEntity<QuoteCom
         /// The aggregated discounts.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<QuoteComputedRecurringTotalDetailsBreakdownDiscount> Discounts { get; set; }
 
         /// <summary>
         /// The aggregated tax amounts by rate.
         /// </summary>
         [JsonProperty("taxes")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxes")]
+#endif
         public List<QuoteComputedRecurringTotalDetailsBreakdownTax> Taxes { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Quotes/QuoteComputedRecurringTotalDetailsBreakdownDiscount.cs b/src/Stripe.net/Entities/Quotes/QuoteComputedRecurringTotalDetailsBreakdownDiscount.cs
index 32af6716fe..fffce513c2 100644
--- a/src/Stripe.net/Entities/Quotes/QuoteComputedRecurringTotalDetailsBreakdownDiscount.cs
+++ b/src/Stripe.net/Entities/Quotes/QuoteComputedRecurringTotalDetailsBreakdownDiscount.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteComputedRecurringTotalDetailsBreakdownDiscount : StripeEntity<QuoteComputedRecurringTotalDetailsBreakdownDiscount>
     {
@@ -9,6 +12,9 @@ public class QuoteComputedRecurringTotalDetailsBreakdownDiscount : StripeEntity<
         /// The amount discounted.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -22,6 +28,9 @@ public class QuoteComputedRecurringTotalDetailsBreakdownDiscount : StripeEntity<
         /// subscriptions</a>.
         /// </summary>
         [JsonProperty("discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+#endif
         public Discount Discount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Quotes/QuoteComputedRecurringTotalDetailsBreakdownTax.cs b/src/Stripe.net/Entities/Quotes/QuoteComputedRecurringTotalDetailsBreakdownTax.cs
index d105eac201..22900b70f5 100644
--- a/src/Stripe.net/Entities/Quotes/QuoteComputedRecurringTotalDetailsBreakdownTax.cs
+++ b/src/Stripe.net/Entities/Quotes/QuoteComputedRecurringTotalDetailsBreakdownTax.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteComputedRecurringTotalDetailsBreakdownTax : StripeEntity<QuoteComputedRecurringTotalDetailsBreakdownTax>
     {
@@ -9,6 +12,9 @@ public class QuoteComputedRecurringTotalDetailsBreakdownTax : StripeEntity<Quote
         /// Amount of tax applied for this rate.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class QuoteComputedRecurringTotalDetailsBreakdownTax : StripeEntity<Quote
         /// Related guide: <a href="https://stripe.com/billing/taxes/tax-rates">Tax rates</a>.
         /// </summary>
         [JsonProperty("rate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("rate")]
+#endif
         public TaxRate Rate { get; set; }
 
         /// <summary>
@@ -33,12 +42,18 @@ public class QuoteComputedRecurringTotalDetailsBreakdownTax : StripeEntity<Quote
         /// <c>standard_rated</c>, <c>taxable_basis_reduced</c>, or <c>zero_rated</c>.
         /// </summary>
         [JsonProperty("taxability_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxability_reason")]
+#endif
         public string TaxabilityReason { get; set; }
 
         /// <summary>
         /// The amount on which tax is calculated, in cents (or local equivalent).
         /// </summary>
         [JsonProperty("taxable_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxable_amount")]
+#endif
         public long? TaxableAmount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Quotes/QuoteComputedUpfront.cs b/src/Stripe.net/Entities/Quotes/QuoteComputedUpfront.cs
index 4a4cedc5c9..384d593318 100644
--- a/src/Stripe.net/Entities/Quotes/QuoteComputedUpfront.cs
+++ b/src/Stripe.net/Entities/Quotes/QuoteComputedUpfront.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteComputedUpfront : StripeEntity<QuoteComputedUpfront>
     {
@@ -9,12 +12,18 @@ public class QuoteComputedUpfront : StripeEntity<QuoteComputedUpfront>
         /// Total before any discounts or taxes are applied.
         /// </summary>
         [JsonProperty("amount_subtotal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_subtotal")]
+#endif
         public long AmountSubtotal { get; set; }
 
         /// <summary>
         /// Total after discounts and taxes are applied.
         /// </summary>
         [JsonProperty("amount_total")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_total")]
+#endif
         public long AmountTotal { get; set; }
 
         /// <summary>
@@ -23,9 +32,15 @@ public class QuoteComputedUpfront : StripeEntity<QuoteComputedUpfront>
         /// included in the next invoice.
         /// </summary>
         [JsonProperty("line_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line_items")]
+#endif
         public StripeList<LineItem> LineItems { get; set; }
 
         [JsonProperty("total_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("total_details")]
+#endif
         public QuoteComputedUpfrontTotalDetails TotalDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Quotes/QuoteComputedUpfrontTotalDetails.cs b/src/Stripe.net/Entities/Quotes/QuoteComputedUpfrontTotalDetails.cs
index 59a76fac12..b323b38e1b 100644
--- a/src/Stripe.net/Entities/Quotes/QuoteComputedUpfrontTotalDetails.cs
+++ b/src/Stripe.net/Entities/Quotes/QuoteComputedUpfrontTotalDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteComputedUpfrontTotalDetails : StripeEntity<QuoteComputedUpfrontTotalDetails>
     {
@@ -9,21 +12,33 @@ public class QuoteComputedUpfrontTotalDetails : StripeEntity<QuoteComputedUpfron
         /// This is the sum of all the discounts.
         /// </summary>
         [JsonProperty("amount_discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_discount")]
+#endif
         public long AmountDiscount { get; set; }
 
         /// <summary>
         /// This is the sum of all the shipping amounts.
         /// </summary>
         [JsonProperty("amount_shipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_shipping")]
+#endif
         public long? AmountShipping { get; set; }
 
         /// <summary>
         /// This is the sum of all the tax amounts.
         /// </summary>
         [JsonProperty("amount_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_tax")]
+#endif
         public long AmountTax { get; set; }
 
         [JsonProperty("breakdown")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("breakdown")]
+#endif
         public QuoteComputedUpfrontTotalDetailsBreakdown Breakdown { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Quotes/QuoteComputedUpfrontTotalDetailsBreakdown.cs b/src/Stripe.net/Entities/Quotes/QuoteComputedUpfrontTotalDetailsBreakdown.cs
index 6e0e2a7c1c..b4e9b8845a 100644
--- a/src/Stripe.net/Entities/Quotes/QuoteComputedUpfrontTotalDetailsBreakdown.cs
+++ b/src/Stripe.net/Entities/Quotes/QuoteComputedUpfrontTotalDetailsBreakdown.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteComputedUpfrontTotalDetailsBreakdown : StripeEntity<QuoteComputedUpfrontTotalDetailsBreakdown>
     {
@@ -10,12 +13,18 @@ public class QuoteComputedUpfrontTotalDetailsBreakdown : StripeEntity<QuoteCompu
         /// The aggregated discounts.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<QuoteComputedUpfrontTotalDetailsBreakdownDiscount> Discounts { get; set; }
 
         /// <summary>
         /// The aggregated tax amounts by rate.
         /// </summary>
         [JsonProperty("taxes")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxes")]
+#endif
         public List<QuoteComputedUpfrontTotalDetailsBreakdownTax> Taxes { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Quotes/QuoteComputedUpfrontTotalDetailsBreakdownDiscount.cs b/src/Stripe.net/Entities/Quotes/QuoteComputedUpfrontTotalDetailsBreakdownDiscount.cs
index 1710e64cdd..ef042a7a43 100644
--- a/src/Stripe.net/Entities/Quotes/QuoteComputedUpfrontTotalDetailsBreakdownDiscount.cs
+++ b/src/Stripe.net/Entities/Quotes/QuoteComputedUpfrontTotalDetailsBreakdownDiscount.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteComputedUpfrontTotalDetailsBreakdownDiscount : StripeEntity<QuoteComputedUpfrontTotalDetailsBreakdownDiscount>
     {
@@ -9,6 +12,9 @@ public class QuoteComputedUpfrontTotalDetailsBreakdownDiscount : StripeEntity<Qu
         /// The amount discounted.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -22,6 +28,9 @@ public class QuoteComputedUpfrontTotalDetailsBreakdownDiscount : StripeEntity<Qu
         /// subscriptions</a>.
         /// </summary>
         [JsonProperty("discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+#endif
         public Discount Discount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Quotes/QuoteComputedUpfrontTotalDetailsBreakdownTax.cs b/src/Stripe.net/Entities/Quotes/QuoteComputedUpfrontTotalDetailsBreakdownTax.cs
index 1a9d069cbd..eb2ae61182 100644
--- a/src/Stripe.net/Entities/Quotes/QuoteComputedUpfrontTotalDetailsBreakdownTax.cs
+++ b/src/Stripe.net/Entities/Quotes/QuoteComputedUpfrontTotalDetailsBreakdownTax.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteComputedUpfrontTotalDetailsBreakdownTax : StripeEntity<QuoteComputedUpfrontTotalDetailsBreakdownTax>
     {
@@ -9,6 +12,9 @@ public class QuoteComputedUpfrontTotalDetailsBreakdownTax : StripeEntity<QuoteCo
         /// Amount of tax applied for this rate.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class QuoteComputedUpfrontTotalDetailsBreakdownTax : StripeEntity<QuoteCo
         /// Related guide: <a href="https://stripe.com/billing/taxes/tax-rates">Tax rates</a>.
         /// </summary>
         [JsonProperty("rate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("rate")]
+#endif
         public TaxRate Rate { get; set; }
 
         /// <summary>
@@ -33,12 +42,18 @@ public class QuoteComputedUpfrontTotalDetailsBreakdownTax : StripeEntity<QuoteCo
         /// <c>standard_rated</c>, <c>taxable_basis_reduced</c>, or <c>zero_rated</c>.
         /// </summary>
         [JsonProperty("taxability_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxability_reason")]
+#endif
         public string TaxabilityReason { get; set; }
 
         /// <summary>
         /// The amount on which tax is calculated, in cents (or local equivalent).
         /// </summary>
         [JsonProperty("taxable_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxable_amount")]
+#endif
         public long? TaxableAmount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Quotes/QuoteFromQuote.cs b/src/Stripe.net/Entities/Quotes/QuoteFromQuote.cs
index 1b4a316a4d..835145a070 100644
--- a/src/Stripe.net/Entities/Quotes/QuoteFromQuote.cs
+++ b/src/Stripe.net/Entities/Quotes/QuoteFromQuote.cs
@@ -3,13 +3,22 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class QuoteFromQuote : StripeEntity<QuoteFromQuote>
     {
         /// <summary>
         /// Whether this quote is a revision of a different quote.
         /// </summary>
         [JsonProperty("is_revision")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("is_revision")]
+#endif
         public bool IsRevision { get; set; }
 
         #region Expandable Quote
@@ -19,6 +28,9 @@ public class QuoteFromQuote : StripeEntity<QuoteFromQuote>
         /// The quote that was cloned.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string QuoteId
         {
             get => this.InternalQuote?.Id;
@@ -32,6 +44,9 @@ public string QuoteId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Quote Quote
         {
             get => this.InternalQuote?.ExpandedObject;
@@ -40,6 +55,10 @@ public Quote Quote
 
         [JsonProperty("quote")]
         [JsonConverter(typeof(ExpandableFieldConverter<Quote>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quote")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Quote>))]
+#endif
         internal ExpandableField<Quote> InternalQuote { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Quotes/QuoteInvoiceSettings.cs b/src/Stripe.net/Entities/Quotes/QuoteInvoiceSettings.cs
index f56fc357d0..df775f0484 100644
--- a/src/Stripe.net/Entities/Quotes/QuoteInvoiceSettings.cs
+++ b/src/Stripe.net/Entities/Quotes/QuoteInvoiceSettings.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteInvoiceSettings : StripeEntity<QuoteInvoiceSettings>
     {
@@ -11,9 +14,15 @@ public class QuoteInvoiceSettings : StripeEntity<QuoteInvoiceSettings>
         /// <c>collection_method=charge_automatically</c>.
         /// </summary>
         [JsonProperty("days_until_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("days_until_due")]
+#endif
         public long? DaysUntilDue { get; set; }
 
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public QuoteInvoiceSettingsIssuer Issuer { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Quotes/QuoteInvoiceSettingsIssuer.cs b/src/Stripe.net/Entities/Quotes/QuoteInvoiceSettingsIssuer.cs
index 5f715dc3a9..5f395228ae 100644
--- a/src/Stripe.net/Entities/Quotes/QuoteInvoiceSettingsIssuer.cs
+++ b/src/Stripe.net/Entities/Quotes/QuoteInvoiceSettingsIssuer.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class QuoteInvoiceSettingsIssuer : StripeEntity<QuoteInvoiceSettingsIssuer>
     {
         #region Expandable Account
@@ -13,6 +19,9 @@ public class QuoteInvoiceSettingsIssuer : StripeEntity<QuoteInvoiceSettingsIssue
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AccountId
         {
             get => this.InternalAccount?.Id;
@@ -26,6 +35,9 @@ public string AccountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Account
         {
             get => this.InternalAccount?.ExpandedObject;
@@ -34,6 +46,10 @@ public Account Account
 
         [JsonProperty("account")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalAccount { get; set; }
         #endregion
 
@@ -42,6 +58,9 @@ public Account Account
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Quotes/QuoteStatusTransitions.cs b/src/Stripe.net/Entities/Quotes/QuoteStatusTransitions.cs
index 030f074c40..061deb9b07 100644
--- a/src/Stripe.net/Entities/Quotes/QuoteStatusTransitions.cs
+++ b/src/Stripe.net/Entities/Quotes/QuoteStatusTransitions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteStatusTransitions : StripeEntity<QuoteStatusTransitions>
     {
@@ -12,6 +15,10 @@ public class QuoteStatusTransitions : StripeEntity<QuoteStatusTransitions>
         /// </summary>
         [JsonProperty("accepted_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("accepted_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? AcceptedAt { get; set; }
 
         /// <summary>
@@ -19,6 +26,10 @@ public class QuoteStatusTransitions : StripeEntity<QuoteStatusTransitions>
         /// </summary>
         [JsonProperty("canceled_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("canceled_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? CanceledAt { get; set; }
 
         /// <summary>
@@ -26,6 +37,10 @@ public class QuoteStatusTransitions : StripeEntity<QuoteStatusTransitions>
         /// </summary>
         [JsonProperty("finalized_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("finalized_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? FinalizedAt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Quotes/QuoteSubscriptionData.cs b/src/Stripe.net/Entities/Quotes/QuoteSubscriptionData.cs
index fb7a9e3dec..8e56e01ac2 100644
--- a/src/Stripe.net/Entities/Quotes/QuoteSubscriptionData.cs
+++ b/src/Stripe.net/Entities/Quotes/QuoteSubscriptionData.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteSubscriptionData : StripeEntity<QuoteSubscriptionData>, IHasMetadata
     {
@@ -14,6 +17,9 @@ public class QuoteSubscriptionData : StripeEntity<QuoteSubscriptionData>, IHasMe
         /// and certain local payment methods UIs.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -23,6 +29,10 @@ public class QuoteSubscriptionData : StripeEntity<QuoteSubscriptionData>, IHasMe
         /// </summary>
         [JsonProperty("effective_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("effective_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? EffectiveDate { get; set; }
 
         /// <summary>
@@ -35,6 +45,9 @@ public class QuoteSubscriptionData : StripeEntity<QuoteSubscriptionData>, IHasMe
         /// metadata, this field is declarative. Updates will clear prior values.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -42,6 +55,9 @@ public class QuoteSubscriptionData : StripeEntity<QuoteSubscriptionData>, IHasMe
         /// the first time.
         /// </summary>
         [JsonProperty("trial_period_days")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_period_days")]
+#endif
         public long? TrialPeriodDays { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Quotes/QuoteTotalDetails.cs b/src/Stripe.net/Entities/Quotes/QuoteTotalDetails.cs
index 19f40a5c59..82f4a493ff 100644
--- a/src/Stripe.net/Entities/Quotes/QuoteTotalDetails.cs
+++ b/src/Stripe.net/Entities/Quotes/QuoteTotalDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteTotalDetails : StripeEntity<QuoteTotalDetails>
     {
@@ -9,21 +12,33 @@ public class QuoteTotalDetails : StripeEntity<QuoteTotalDetails>
         /// This is the sum of all the discounts.
         /// </summary>
         [JsonProperty("amount_discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_discount")]
+#endif
         public long AmountDiscount { get; set; }
 
         /// <summary>
         /// This is the sum of all the shipping amounts.
         /// </summary>
         [JsonProperty("amount_shipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_shipping")]
+#endif
         public long? AmountShipping { get; set; }
 
         /// <summary>
         /// This is the sum of all the tax amounts.
         /// </summary>
         [JsonProperty("amount_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_tax")]
+#endif
         public long AmountTax { get; set; }
 
         [JsonProperty("breakdown")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("breakdown")]
+#endif
         public QuoteTotalDetailsBreakdown Breakdown { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Quotes/QuoteTotalDetailsBreakdown.cs b/src/Stripe.net/Entities/Quotes/QuoteTotalDetailsBreakdown.cs
index 83a45c74b1..7c5e646dc6 100644
--- a/src/Stripe.net/Entities/Quotes/QuoteTotalDetailsBreakdown.cs
+++ b/src/Stripe.net/Entities/Quotes/QuoteTotalDetailsBreakdown.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteTotalDetailsBreakdown : StripeEntity<QuoteTotalDetailsBreakdown>
     {
@@ -10,12 +13,18 @@ public class QuoteTotalDetailsBreakdown : StripeEntity<QuoteTotalDetailsBreakdow
         /// The aggregated discounts.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<QuoteTotalDetailsBreakdownDiscount> Discounts { get; set; }
 
         /// <summary>
         /// The aggregated tax amounts by rate.
         /// </summary>
         [JsonProperty("taxes")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxes")]
+#endif
         public List<QuoteTotalDetailsBreakdownTax> Taxes { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Quotes/QuoteTotalDetailsBreakdownDiscount.cs b/src/Stripe.net/Entities/Quotes/QuoteTotalDetailsBreakdownDiscount.cs
index 779cfa7a2f..11357b0343 100644
--- a/src/Stripe.net/Entities/Quotes/QuoteTotalDetailsBreakdownDiscount.cs
+++ b/src/Stripe.net/Entities/Quotes/QuoteTotalDetailsBreakdownDiscount.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteTotalDetailsBreakdownDiscount : StripeEntity<QuoteTotalDetailsBreakdownDiscount>
     {
@@ -9,6 +12,9 @@ public class QuoteTotalDetailsBreakdownDiscount : StripeEntity<QuoteTotalDetails
         /// The amount discounted.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -22,6 +28,9 @@ public class QuoteTotalDetailsBreakdownDiscount : StripeEntity<QuoteTotalDetails
         /// subscriptions</a>.
         /// </summary>
         [JsonProperty("discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+#endif
         public Discount Discount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Quotes/QuoteTotalDetailsBreakdownTax.cs b/src/Stripe.net/Entities/Quotes/QuoteTotalDetailsBreakdownTax.cs
index 46155e5693..c218339c6f 100644
--- a/src/Stripe.net/Entities/Quotes/QuoteTotalDetailsBreakdownTax.cs
+++ b/src/Stripe.net/Entities/Quotes/QuoteTotalDetailsBreakdownTax.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteTotalDetailsBreakdownTax : StripeEntity<QuoteTotalDetailsBreakdownTax>
     {
@@ -9,6 +12,9 @@ public class QuoteTotalDetailsBreakdownTax : StripeEntity<QuoteTotalDetailsBreak
         /// Amount of tax applied for this rate.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class QuoteTotalDetailsBreakdownTax : StripeEntity<QuoteTotalDetailsBreak
         /// Related guide: <a href="https://stripe.com/billing/taxes/tax-rates">Tax rates</a>.
         /// </summary>
         [JsonProperty("rate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("rate")]
+#endif
         public TaxRate Rate { get; set; }
 
         /// <summary>
@@ -33,12 +42,18 @@ public class QuoteTotalDetailsBreakdownTax : StripeEntity<QuoteTotalDetailsBreak
         /// <c>standard_rated</c>, <c>taxable_basis_reduced</c>, or <c>zero_rated</c>.
         /// </summary>
         [JsonProperty("taxability_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxability_reason")]
+#endif
         public string TaxabilityReason { get; set; }
 
         /// <summary>
         /// The amount on which tax is calculated, in cents (or local equivalent).
         /// </summary>
         [JsonProperty("taxable_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxable_amount")]
+#endif
         public long? TaxableAmount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Quotes/QuoteTransferData.cs b/src/Stripe.net/Entities/Quotes/QuoteTransferData.cs
index b5eea2ed66..8ee7b0d229 100644
--- a/src/Stripe.net/Entities/Quotes/QuoteTransferData.cs
+++ b/src/Stripe.net/Entities/Quotes/QuoteTransferData.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class QuoteTransferData : StripeEntity<QuoteTransferData>
     {
         /// <summary>
@@ -12,6 +18,9 @@ public class QuoteTransferData : StripeEntity<QuoteTransferData>
         /// destination.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -21,6 +30,9 @@ public class QuoteTransferData : StripeEntity<QuoteTransferData>
         /// destination.
         /// </summary>
         [JsonProperty("amount_percent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_percent")]
+#endif
         public decimal? AmountPercent { get; set; }
 
         #region Expandable Destination
@@ -30,6 +42,9 @@ public class QuoteTransferData : StripeEntity<QuoteTransferData>
         /// The account where funds from the payment will be transferred to upon payment success.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DestinationId
         {
             get => this.InternalDestination?.Id;
@@ -43,6 +58,9 @@ public string DestinationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Destination
         {
             get => this.InternalDestination?.ExpandedObject;
@@ -51,6 +69,10 @@ public Account Destination
 
         [JsonProperty("destination")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalDestination { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Radar/EarlyFraudWarnings/EarlyFraudWarning.cs b/src/Stripe.net/Entities/Radar/EarlyFraudWarnings/EarlyFraudWarning.cs
index 348a8cfef9..9e1b020dfe 100644
--- a/src/Stripe.net/Entities/Radar/EarlyFraudWarnings/EarlyFraudWarning.cs
+++ b/src/Stripe.net/Entities/Radar/EarlyFraudWarnings/EarlyFraudWarning.cs
@@ -4,6 +4,9 @@ namespace Stripe.Radar
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// An early fraud warning indicates that the card issuer has notified us that a charge may
@@ -13,18 +16,27 @@ namespace Stripe.Radar
     /// href="https://stripe.com/docs/disputes/measuring#early-fraud-warnings">Early fraud
     /// warnings</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class EarlyFraudWarning : StripeEntity<EarlyFraudWarning>, IHasId, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -33,6 +45,9 @@ public class EarlyFraudWarning : StripeEntity<EarlyFraudWarning>, IHasId, IHasOb
         /// receiving a dispute later.
         /// </summary>
         [JsonProperty("actionable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("actionable")]
+#endif
         public bool Actionable { get; set; }
 
         #region Expandable Charge
@@ -42,6 +57,9 @@ public class EarlyFraudWarning : StripeEntity<EarlyFraudWarning>, IHasId, IHasOb
         /// ID of the charge this early fraud warning is for, optionally expanded.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ChargeId
         {
             get => this.InternalCharge?.Id;
@@ -55,6 +73,9 @@ public string ChargeId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Charge Charge
         {
             get => this.InternalCharge?.ExpandedObject;
@@ -63,6 +84,10 @@ public Charge Charge
 
         [JsonProperty("charge")]
         [JsonConverter(typeof(ExpandableFieldConverter<Charge>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("charge")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Charge>))]
+#endif
         internal ExpandableField<Charge> InternalCharge { get; set; }
         #endregion
 
@@ -71,6 +96,10 @@ public Charge Charge
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -80,6 +109,9 @@ public Charge Charge
         /// <c>unauthorized_use_of_card</c>.
         /// </summary>
         [JsonProperty("fraud_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fraud_type")]
+#endif
         public string FraudType { get; set; }
 
         /// <summary>
@@ -87,6 +119,9 @@ public Charge Charge
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         #region Expandable PaymentIntent
@@ -96,6 +131,9 @@ public Charge Charge
         /// ID of the Payment Intent this early fraud warning is for, optionally expanded.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string PaymentIntentId
         {
             get => this.InternalPaymentIntent?.Id;
@@ -109,6 +147,9 @@ public string PaymentIntentId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PaymentIntent PaymentIntent
         {
             get => this.InternalPaymentIntent?.ExpandedObject;
@@ -117,6 +158,10 @@ public PaymentIntent PaymentIntent
 
         [JsonProperty("payment_intent")]
         [JsonConverter(typeof(ExpandableFieldConverter<PaymentIntent>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_intent")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PaymentIntent>))]
+#endif
         internal ExpandableField<PaymentIntent> InternalPaymentIntent { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Radar/Rules/Rule.cs b/src/Stripe.net/Entities/Radar/Rules/Rule.cs
index 84a56d13c2..a1abac682b 100644
--- a/src/Stripe.net/Entities/Radar/Rules/Rule.cs
+++ b/src/Stripe.net/Entities/Radar/Rules/Rule.cs
@@ -1,19 +1,35 @@
 namespace Stripe.Radar
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class Rule : StripeEntity<Rule>, IHasId
     {
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         [JsonProperty("action")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("action")]
+#endif
         public string Action { get; set; }
 
         [JsonProperty("deleted", NullValueHandling = NullValueHandling.Ignore)]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+        [STJS.JsonIgnore(Condition = STJS.JsonIgnoreCondition.WhenWritingNull)]
+#endif
         public bool? Deleted { get; set; }
 
         [JsonProperty("predicate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("predicate")]
+#endif
         public string Predicate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Radar/ValueListItems/ValueListItem.cs b/src/Stripe.net/Entities/Radar/ValueListItems/ValueListItem.cs
index 3ece9f4d28..c2939b706e 100644
--- a/src/Stripe.net/Entities/Radar/ValueListItems/ValueListItem.cs
+++ b/src/Stripe.net/Entities/Radar/ValueListItems/ValueListItem.cs
@@ -4,6 +4,9 @@ namespace Stripe.Radar
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Value list items allow you to add specific values to a given Radar value list, which can
@@ -18,12 +21,18 @@ public class ValueListItem : StripeEntity<ValueListItem>, IHasId, IHasObject
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -31,18 +40,29 @@ public class ValueListItem : StripeEntity<ValueListItem>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// The name or email address of the user who added this item to the value list.
         /// </summary>
         [JsonProperty("created_by")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created_by")]
+#endif
         public string CreatedBy { get; set; }
 
         /// <summary>
         /// Whether this object is deleted or not.
         /// </summary>
         [JsonProperty("deleted", NullValueHandling = NullValueHandling.Ignore)]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+        [STJS.JsonIgnore(Condition = STJS.JsonIgnoreCondition.WhenWritingNull)]
+#endif
         public bool? Deleted { get; set; }
 
         /// <summary>
@@ -50,18 +70,27 @@ public class ValueListItem : StripeEntity<ValueListItem>, IHasId, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
         /// The value of the item.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
 
         /// <summary>
         /// The identifier of the value list this item belongs to.
         /// </summary>
         [JsonProperty("value_list")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value_list")]
+#endif
         public string ValueList { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Radar/ValueLists/ValueList.cs b/src/Stripe.net/Entities/Radar/ValueLists/ValueList.cs
index c53611a348..c1a988c485 100644
--- a/src/Stripe.net/Entities/Radar/ValueLists/ValueList.cs
+++ b/src/Stripe.net/Entities/Radar/ValueLists/ValueList.cs
@@ -5,6 +5,9 @@ namespace Stripe.Radar
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Value lists allow you to group values together which can then be referenced in rules.
@@ -18,18 +21,27 @@ public class ValueList : StripeEntity<ValueList>, IHasId, IHasMetadata, IHasObje
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// The name of the value list for use in rules.
         /// </summary>
         [JsonProperty("alias")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alias")]
+#endif
         public string Alias { get; set; }
 
         /// <summary>
@@ -37,18 +49,29 @@ public class ValueList : StripeEntity<ValueList>, IHasId, IHasMetadata, IHasObje
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// The name or email address of the user who created this value list.
         /// </summary>
         [JsonProperty("created_by")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created_by")]
+#endif
         public string CreatedBy { get; set; }
 
         /// <summary>
         /// Whether this object is deleted or not.
         /// </summary>
         [JsonProperty("deleted", NullValueHandling = NullValueHandling.Ignore)]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+        [STJS.JsonIgnore(Condition = STJS.JsonIgnoreCondition.WhenWritingNull)]
+#endif
         public bool? Deleted { get; set; }
 
         /// <summary>
@@ -61,12 +84,18 @@ public class ValueList : StripeEntity<ValueList>, IHasId, IHasMetadata, IHasObje
         /// <c>sepa_debit_fingerprint</c>, <c>string</c>, or <c>us_bank_account_fingerprint</c>.
         /// </summary>
         [JsonProperty("item_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("item_type")]
+#endif
         public string ItemType { get; set; }
 
         /// <summary>
         /// List of items contained within this value list.
         /// </summary>
         [JsonProperty("list_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("list_items")]
+#endif
         public StripeList<ValueListItem> ListItems { get; set; }
 
         /// <summary>
@@ -74,6 +103,9 @@ public class ValueList : StripeEntity<ValueList>, IHasId, IHasMetadata, IHasObje
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -82,12 +114,18 @@ public class ValueList : StripeEntity<ValueList>, IHasId, IHasMetadata, IHasObje
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The name of the value list.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Refunds/Refund.cs b/src/Stripe.net/Entities/Refunds/Refund.cs
index d244df43cb..82098c259b 100644
--- a/src/Stripe.net/Entities/Refunds/Refund.cs
+++ b/src/Stripe.net/Entities/Refunds/Refund.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Refund objects allow you to refund a previously created charge that isn't refunded yet.
@@ -12,24 +15,36 @@ namespace Stripe
     ///
     /// Related guide: <a href="https://stripe.com/docs/refunds">Refunds</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class Refund : StripeEntity<Refund>, IHasId, IHasMetadata, IHasObject, IBalanceTransactionSource
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Amount, in cents (or local equivalent).
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         #region Expandable BalanceTransaction
@@ -39,6 +54,9 @@ public class Refund : StripeEntity<Refund>, IHasId, IHasMetadata, IHasObject, IB
         /// Balance transaction that describes the impact on your account balance.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string BalanceTransactionId
         {
             get => this.InternalBalanceTransaction?.Id;
@@ -52,6 +70,9 @@ public string BalanceTransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public BalanceTransaction BalanceTransaction
         {
             get => this.InternalBalanceTransaction?.ExpandedObject;
@@ -60,6 +81,10 @@ public BalanceTransaction BalanceTransaction
 
         [JsonProperty("balance_transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<BalanceTransaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("balance_transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<BalanceTransaction>))]
+#endif
         internal ExpandableField<BalanceTransaction> InternalBalanceTransaction { get; set; }
         #endregion
 
@@ -70,6 +95,9 @@ public BalanceTransaction BalanceTransaction
         /// ID of the charge that's refunded.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ChargeId
         {
             get => this.InternalCharge?.Id;
@@ -83,6 +111,9 @@ public string ChargeId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Charge Charge
         {
             get => this.InternalCharge?.ExpandedObject;
@@ -91,6 +122,10 @@ public Charge Charge
 
         [JsonProperty("charge")]
         [JsonConverter(typeof(ExpandableFieldConverter<Charge>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("charge")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Charge>))]
+#endif
         internal ExpandableField<Charge> InternalCharge { get; set; }
         #endregion
 
@@ -99,6 +134,10 @@ public Charge Charge
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -107,6 +146,9 @@ public Charge Charge
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -114,9 +156,15 @@ public Charge Charge
         /// (available on non-card refunds only).
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         [JsonProperty("destination_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination_details")]
+#endif
         public RefundDestinationDetails DestinationDetails { get; set; }
 
         #region Expandable FailureBalanceTransaction
@@ -127,6 +175,9 @@ public Charge Charge
         /// account balance that reverses the initial balance transaction.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string FailureBalanceTransactionId
         {
             get => this.InternalFailureBalanceTransaction?.Id;
@@ -141,6 +192,9 @@ public string FailureBalanceTransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public BalanceTransaction FailureBalanceTransaction
         {
             get => this.InternalFailureBalanceTransaction?.ExpandedObject;
@@ -149,6 +203,10 @@ public BalanceTransaction FailureBalanceTransaction
 
         [JsonProperty("failure_balance_transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<BalanceTransaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("failure_balance_transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<BalanceTransaction>))]
+#endif
         internal ExpandableField<BalanceTransaction> InternalFailureBalanceTransaction { get; set; }
         #endregion
 
@@ -159,6 +217,9 @@ public BalanceTransaction FailureBalanceTransaction
         /// <c>merchant_request</c>, or <c>unknown</c>.
         /// </summary>
         [JsonProperty("failure_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("failure_reason")]
+#endif
         public string FailureReason { get; set; }
 
         /// <summary>
@@ -166,6 +227,9 @@ public BalanceTransaction FailureBalanceTransaction
         /// provide an email address for the customer to receive refund instructions.
         /// </summary>
         [JsonProperty("instructions_email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("instructions_email")]
+#endif
         public string InstructionsEmail { get; set; }
 
         /// <summary>
@@ -174,9 +238,15 @@ public BalanceTransaction FailureBalanceTransaction
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         [JsonProperty("next_action")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("next_action")]
+#endif
         public RefundNextAction NextAction { get; set; }
 
         #region Expandable PaymentIntent
@@ -186,6 +256,9 @@ public BalanceTransaction FailureBalanceTransaction
         /// ID of the PaymentIntent that's refunded.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string PaymentIntentId
         {
             get => this.InternalPaymentIntent?.Id;
@@ -199,6 +272,9 @@ public string PaymentIntentId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PaymentIntent PaymentIntent
         {
             get => this.InternalPaymentIntent?.ExpandedObject;
@@ -207,6 +283,10 @@ public PaymentIntent PaymentIntent
 
         [JsonProperty("payment_intent")]
         [JsonConverter(typeof(ExpandableFieldConverter<PaymentIntent>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_intent")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PaymentIntent>))]
+#endif
         internal ExpandableField<PaymentIntent> InternalPaymentIntent { get; set; }
         #endregion
 
@@ -218,12 +298,18 @@ public PaymentIntent PaymentIntent
         /// <c>requested_by_customer</c>.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
 
         /// <summary>
         /// This is the transaction number that appears on email receipts sent for this refund.
         /// </summary>
         [JsonProperty("receipt_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("receipt_number")]
+#endif
         public string ReceiptNumber { get; set; }
 
         #region Expandable SourceTransferReversal
@@ -234,6 +320,9 @@ public PaymentIntent PaymentIntent
         /// from another Stripe account.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string SourceTransferReversalId
         {
             get => this.InternalSourceTransferReversal?.Id;
@@ -248,6 +337,9 @@ public string SourceTransferReversalId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public TransferReversal SourceTransferReversal
         {
             get => this.InternalSourceTransferReversal?.ExpandedObject;
@@ -256,6 +348,10 @@ public TransferReversal SourceTransferReversal
 
         [JsonProperty("source_transfer_reversal")]
         [JsonConverter(typeof(ExpandableFieldConverter<TransferReversal>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source_transfer_reversal")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<TransferReversal>))]
+#endif
         internal ExpandableField<TransferReversal> InternalSourceTransferReversal { get; set; }
         #endregion
 
@@ -265,6 +361,9 @@ public TransferReversal SourceTransferReversal
         /// href="https://stripe.com/docs/refunds#failed-refunds">failed refunds</a>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         #region Expandable TransferReversal
@@ -275,6 +374,9 @@ public TransferReversal SourceTransferReversal
         /// is only applicable if the charge was created using the destination parameter.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string TransferReversalId
         {
             get => this.InternalTransferReversal?.Id;
@@ -289,6 +391,9 @@ public string TransferReversalId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public TransferReversal TransferReversal
         {
             get => this.InternalTransferReversal?.ExpandedObject;
@@ -297,6 +402,10 @@ public TransferReversal TransferReversal
 
         [JsonProperty("transfer_reversal")]
         [JsonConverter(typeof(ExpandableFieldConverter<TransferReversal>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_reversal")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<TransferReversal>))]
+#endif
         internal ExpandableField<TransferReversal> InternalTransferReversal { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Refunds/RefundDestinationDetails.cs b/src/Stripe.net/Entities/Refunds/RefundDestinationDetails.cs
index 45256df34d..4c695543ef 100644
--- a/src/Stripe.net/Entities/Refunds/RefundDestinationDetails.cs
+++ b/src/Stripe.net/Entities/Refunds/RefundDestinationDetails.cs
@@ -2,91 +2,178 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RefundDestinationDetails : StripeEntity<RefundDestinationDetails>
     {
         [JsonProperty("affirm")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("affirm")]
+#endif
         public RefundDestinationDetailsAffirm Affirm { get; set; }
 
         [JsonProperty("afterpay_clearpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("afterpay_clearpay")]
+#endif
         public RefundDestinationDetailsAfterpayClearpay AfterpayClearpay { get; set; }
 
         [JsonProperty("alipay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alipay")]
+#endif
         public RefundDestinationDetailsAlipay Alipay { get; set; }
 
         [JsonProperty("alma")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alma")]
+#endif
         public RefundDestinationDetailsAlma Alma { get; set; }
 
         [JsonProperty("amazon_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amazon_pay")]
+#endif
         public RefundDestinationDetailsAmazonPay AmazonPay { get; set; }
 
         [JsonProperty("au_bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("au_bank_transfer")]
+#endif
         public RefundDestinationDetailsAuBankTransfer AuBankTransfer { get; set; }
 
         [JsonProperty("blik")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("blik")]
+#endif
         public RefundDestinationDetailsBlik Blik { get; set; }
 
         [JsonProperty("br_bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("br_bank_transfer")]
+#endif
         public RefundDestinationDetailsBrBankTransfer BrBankTransfer { get; set; }
 
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public RefundDestinationDetailsCard Card { get; set; }
 
         [JsonProperty("cashapp")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cashapp")]
+#endif
         public RefundDestinationDetailsCashapp Cashapp { get; set; }
 
         [JsonProperty("customer_cash_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_cash_balance")]
+#endif
         public RefundDestinationDetailsCustomerCashBalance CustomerCashBalance { get; set; }
 
         [JsonProperty("eps")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eps")]
+#endif
         public RefundDestinationDetailsEps Eps { get; set; }
 
         [JsonProperty("eu_bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eu_bank_transfer")]
+#endif
         public RefundDestinationDetailsEuBankTransfer EuBankTransfer { get; set; }
 
         [JsonProperty("gb_bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gb_bank_transfer")]
+#endif
         public RefundDestinationDetailsGbBankTransfer GbBankTransfer { get; set; }
 
         [JsonProperty("giropay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("giropay")]
+#endif
         public RefundDestinationDetailsGiropay Giropay { get; set; }
 
         [JsonProperty("grabpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("grabpay")]
+#endif
         public RefundDestinationDetailsGrabpay Grabpay { get; set; }
 
         [JsonProperty("jp_bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("jp_bank_transfer")]
+#endif
         public RefundDestinationDetailsJpBankTransfer JpBankTransfer { get; set; }
 
         [JsonProperty("klarna")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("klarna")]
+#endif
         public RefundDestinationDetailsKlarna Klarna { get; set; }
 
         [JsonProperty("multibanco")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("multibanco")]
+#endif
         public RefundDestinationDetailsMultibanco Multibanco { get; set; }
 
         [JsonProperty("mx_bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mx_bank_transfer")]
+#endif
         public RefundDestinationDetailsMxBankTransfer MxBankTransfer { get; set; }
 
         [JsonProperty("p24")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("p24")]
+#endif
         public RefundDestinationDetailsP24 P24 { get; set; }
 
         [JsonProperty("paynow")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paynow")]
+#endif
         public RefundDestinationDetailsPaynow Paynow { get; set; }
 
         [JsonProperty("paypal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paypal")]
+#endif
         public RefundDestinationDetailsPaypal Paypal { get; set; }
 
         [JsonProperty("pix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pix")]
+#endif
         public RefundDestinationDetailsPix Pix { get; set; }
 
         [JsonProperty("revolut")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("revolut")]
+#endif
         public RefundDestinationDetailsRevolut Revolut { get; set; }
 
         [JsonProperty("sofort")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sofort")]
+#endif
         public RefundDestinationDetailsSofort Sofort { get; set; }
 
         [JsonProperty("swish")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("swish")]
+#endif
         public RefundDestinationDetailsSwish Swish { get; set; }
 
         [JsonProperty("th_bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("th_bank_transfer")]
+#endif
         public RefundDestinationDetailsThBankTransfer ThBankTransfer { get; set; }
 
         /// <summary>
@@ -95,15 +182,27 @@ public class RefundDestinationDetails : StripeEntity<RefundDestinationDetails>
         /// matching this value. It contains information specific to the refund transaction.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         [JsonProperty("us_bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_transfer")]
+#endif
         public RefundDestinationDetailsUsBankTransfer UsBankTransfer { get; set; }
 
         [JsonProperty("wechat_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wechat_pay")]
+#endif
         public RefundDestinationDetailsWechatPay WechatPay { get; set; }
 
         [JsonProperty("zip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("zip")]
+#endif
         public RefundDestinationDetailsZip Zip { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsBlik.cs b/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsBlik.cs
index d8e7de1f67..36659a4817 100644
--- a/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsBlik.cs
+++ b/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsBlik.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RefundDestinationDetailsBlik : StripeEntity<RefundDestinationDetailsBlik>
     {
@@ -10,12 +13,18 @@ public class RefundDestinationDetailsBlik : StripeEntity<RefundDestinationDetail
         /// indicates the reason the refund failed.
         /// </summary>
         [JsonProperty("network_decline_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network_decline_code")]
+#endif
         public string NetworkDeclineCode { get; set; }
 
         /// <summary>
         /// The reference assigned to the refund.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class RefundDestinationDetailsBlik : StripeEntity<RefundDestinationDetail
         /// <c>unavailable</c>.
         /// </summary>
         [JsonProperty("reference_status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference_status")]
+#endif
         public string ReferenceStatus { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsBrBankTransfer.cs b/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsBrBankTransfer.cs
index f9b40e7af7..ad390921cb 100644
--- a/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsBrBankTransfer.cs
+++ b/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsBrBankTransfer.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RefundDestinationDetailsBrBankTransfer : StripeEntity<RefundDestinationDetailsBrBankTransfer>
     {
@@ -9,6 +12,9 @@ public class RefundDestinationDetailsBrBankTransfer : StripeEntity<RefundDestina
         /// The reference assigned to the refund.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RefundDestinationDetailsBrBankTransfer : StripeEntity<RefundDestina
         /// <c>unavailable</c>.
         /// </summary>
         [JsonProperty("reference_status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference_status")]
+#endif
         public string ReferenceStatus { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsCard.cs b/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsCard.cs
index 609c9e2a6d..a6b7e78c9d 100644
--- a/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsCard.cs
+++ b/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsCard.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RefundDestinationDetailsCard : StripeEntity<RefundDestinationDetailsCard>
     {
@@ -9,6 +12,9 @@ public class RefundDestinationDetailsCard : StripeEntity<RefundDestinationDetail
         /// Value of the reference number assigned to the refund.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
@@ -16,12 +22,18 @@ public class RefundDestinationDetailsCard : StripeEntity<RefundDestinationDetail
         /// <c>available</c> or <c>unavailable</c>.
         /// </summary>
         [JsonProperty("reference_status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference_status")]
+#endif
         public string ReferenceStatus { get; set; }
 
         /// <summary>
         /// Type of the reference number assigned to the refund.
         /// </summary>
         [JsonProperty("reference_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference_type")]
+#endif
         public string ReferenceType { get; set; }
 
         /// <summary>
@@ -29,6 +41,9 @@ public class RefundDestinationDetailsCard : StripeEntity<RefundDestinationDetail
         /// One of: <c>pending</c>, <c>refund</c>, or <c>reversal</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsEuBankTransfer.cs b/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsEuBankTransfer.cs
index fbfcee6ab9..9d03117822 100644
--- a/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsEuBankTransfer.cs
+++ b/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsEuBankTransfer.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RefundDestinationDetailsEuBankTransfer : StripeEntity<RefundDestinationDetailsEuBankTransfer>
     {
@@ -9,6 +12,9 @@ public class RefundDestinationDetailsEuBankTransfer : StripeEntity<RefundDestina
         /// The reference assigned to the refund.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RefundDestinationDetailsEuBankTransfer : StripeEntity<RefundDestina
         /// <c>unavailable</c>.
         /// </summary>
         [JsonProperty("reference_status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference_status")]
+#endif
         public string ReferenceStatus { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsGbBankTransfer.cs b/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsGbBankTransfer.cs
index 7b7fcc696b..7ca057ff60 100644
--- a/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsGbBankTransfer.cs
+++ b/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsGbBankTransfer.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RefundDestinationDetailsGbBankTransfer : StripeEntity<RefundDestinationDetailsGbBankTransfer>
     {
@@ -9,6 +12,9 @@ public class RefundDestinationDetailsGbBankTransfer : StripeEntity<RefundDestina
         /// The reference assigned to the refund.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RefundDestinationDetailsGbBankTransfer : StripeEntity<RefundDestina
         /// <c>unavailable</c>.
         /// </summary>
         [JsonProperty("reference_status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference_status")]
+#endif
         public string ReferenceStatus { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsJpBankTransfer.cs b/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsJpBankTransfer.cs
index c7a0e3f8e5..456d902ca2 100644
--- a/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsJpBankTransfer.cs
+++ b/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsJpBankTransfer.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RefundDestinationDetailsJpBankTransfer : StripeEntity<RefundDestinationDetailsJpBankTransfer>
     {
@@ -9,6 +12,9 @@ public class RefundDestinationDetailsJpBankTransfer : StripeEntity<RefundDestina
         /// The reference assigned to the refund.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RefundDestinationDetailsJpBankTransfer : StripeEntity<RefundDestina
         /// <c>unavailable</c>.
         /// </summary>
         [JsonProperty("reference_status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference_status")]
+#endif
         public string ReferenceStatus { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsMultibanco.cs b/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsMultibanco.cs
index 0c53a308c8..8f5b4ad019 100644
--- a/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsMultibanco.cs
+++ b/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsMultibanco.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RefundDestinationDetailsMultibanco : StripeEntity<RefundDestinationDetailsMultibanco>
     {
@@ -9,6 +12,9 @@ public class RefundDestinationDetailsMultibanco : StripeEntity<RefundDestination
         /// The reference assigned to the refund.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RefundDestinationDetailsMultibanco : StripeEntity<RefundDestination
         /// <c>unavailable</c>.
         /// </summary>
         [JsonProperty("reference_status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference_status")]
+#endif
         public string ReferenceStatus { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsMxBankTransfer.cs b/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsMxBankTransfer.cs
index 00ad74a121..be72cb891b 100644
--- a/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsMxBankTransfer.cs
+++ b/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsMxBankTransfer.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RefundDestinationDetailsMxBankTransfer : StripeEntity<RefundDestinationDetailsMxBankTransfer>
     {
@@ -9,6 +12,9 @@ public class RefundDestinationDetailsMxBankTransfer : StripeEntity<RefundDestina
         /// The reference assigned to the refund.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RefundDestinationDetailsMxBankTransfer : StripeEntity<RefundDestina
         /// <c>unavailable</c>.
         /// </summary>
         [JsonProperty("reference_status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference_status")]
+#endif
         public string ReferenceStatus { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsP24.cs b/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsP24.cs
index 910d30a03b..ac3310cf34 100644
--- a/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsP24.cs
+++ b/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsP24.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RefundDestinationDetailsP24 : StripeEntity<RefundDestinationDetailsP24>
     {
@@ -9,6 +12,9 @@ public class RefundDestinationDetailsP24 : StripeEntity<RefundDestinationDetails
         /// The reference assigned to the refund.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RefundDestinationDetailsP24 : StripeEntity<RefundDestinationDetails
         /// <c>unavailable</c>.
         /// </summary>
         [JsonProperty("reference_status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference_status")]
+#endif
         public string ReferenceStatus { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsSwish.cs b/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsSwish.cs
index 23153a439f..77fa352c67 100644
--- a/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsSwish.cs
+++ b/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsSwish.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RefundDestinationDetailsSwish : StripeEntity<RefundDestinationDetailsSwish>
     {
@@ -10,12 +13,18 @@ public class RefundDestinationDetailsSwish : StripeEntity<RefundDestinationDetai
         /// indicates the reason the refund failed.
         /// </summary>
         [JsonProperty("network_decline_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network_decline_code")]
+#endif
         public string NetworkDeclineCode { get; set; }
 
         /// <summary>
         /// The reference assigned to the refund.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class RefundDestinationDetailsSwish : StripeEntity<RefundDestinationDetai
         /// <c>unavailable</c>.
         /// </summary>
         [JsonProperty("reference_status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference_status")]
+#endif
         public string ReferenceStatus { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsThBankTransfer.cs b/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsThBankTransfer.cs
index d49f70055a..693e656f86 100644
--- a/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsThBankTransfer.cs
+++ b/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsThBankTransfer.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RefundDestinationDetailsThBankTransfer : StripeEntity<RefundDestinationDetailsThBankTransfer>
     {
@@ -9,6 +12,9 @@ public class RefundDestinationDetailsThBankTransfer : StripeEntity<RefundDestina
         /// The reference assigned to the refund.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RefundDestinationDetailsThBankTransfer : StripeEntity<RefundDestina
         /// <c>unavailable</c>.
         /// </summary>
         [JsonProperty("reference_status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference_status")]
+#endif
         public string ReferenceStatus { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsUsBankTransfer.cs b/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsUsBankTransfer.cs
index 0602822c8c..d96690c10d 100644
--- a/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsUsBankTransfer.cs
+++ b/src/Stripe.net/Entities/Refunds/RefundDestinationDetailsUsBankTransfer.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RefundDestinationDetailsUsBankTransfer : StripeEntity<RefundDestinationDetailsUsBankTransfer>
     {
@@ -9,6 +12,9 @@ public class RefundDestinationDetailsUsBankTransfer : StripeEntity<RefundDestina
         /// The reference assigned to the refund.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RefundDestinationDetailsUsBankTransfer : StripeEntity<RefundDestina
         /// <c>unavailable</c>.
         /// </summary>
         [JsonProperty("reference_status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference_status")]
+#endif
         public string ReferenceStatus { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Refunds/RefundNextAction.cs b/src/Stripe.net/Entities/Refunds/RefundNextAction.cs
index 25ea6c51a7..46894890c0 100644
--- a/src/Stripe.net/Entities/Refunds/RefundNextAction.cs
+++ b/src/Stripe.net/Entities/Refunds/RefundNextAction.cs
@@ -2,16 +2,25 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RefundNextAction : StripeEntity<RefundNextAction>
     {
         [JsonProperty("display_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_details")]
+#endif
         public RefundNextActionDisplayDetails DisplayDetails { get; set; }
 
         /// <summary>
         /// Type of the next action to perform.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Refunds/RefundNextActionDisplayDetails.cs b/src/Stripe.net/Entities/Refunds/RefundNextActionDisplayDetails.cs
index a5d5b43ea7..66cc946cf9 100644
--- a/src/Stripe.net/Entities/Refunds/RefundNextActionDisplayDetails.cs
+++ b/src/Stripe.net/Entities/Refunds/RefundNextActionDisplayDetails.cs
@@ -4,10 +4,16 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RefundNextActionDisplayDetails : StripeEntity<RefundNextActionDisplayDetails>
     {
         [JsonProperty("email_sent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email_sent")]
+#endif
         public RefundNextActionDisplayDetailsEmailSent EmailSent { get; set; }
 
         /// <summary>
@@ -15,6 +21,10 @@ public class RefundNextActionDisplayDetails : StripeEntity<RefundNextActionDispl
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime ExpiresAt { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
     }
 }
diff --git a/src/Stripe.net/Entities/Refunds/RefundNextActionDisplayDetailsEmailSent.cs b/src/Stripe.net/Entities/Refunds/RefundNextActionDisplayDetailsEmailSent.cs
index 1f1aa3c0c3..2bc0799851 100644
--- a/src/Stripe.net/Entities/Refunds/RefundNextActionDisplayDetailsEmailSent.cs
+++ b/src/Stripe.net/Entities/Refunds/RefundNextActionDisplayDetailsEmailSent.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RefundNextActionDisplayDetailsEmailSent : StripeEntity<RefundNextActionDisplayDetailsEmailSent>
     {
@@ -12,12 +15,19 @@ public class RefundNextActionDisplayDetailsEmailSent : StripeEntity<RefundNextAc
         /// </summary>
         [JsonProperty("email_sent_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email_sent_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime EmailSentAt { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// The recipient's email address.
         /// </summary>
         [JsonProperty("email_sent_to")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email_sent_to")]
+#endif
         public string EmailSentTo { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Reporting/ReportRuns/ReportRun.cs b/src/Stripe.net/Entities/Reporting/ReportRuns/ReportRun.cs
index ca8a2f0ca3..3eded5df34 100644
--- a/src/Stripe.net/Entities/Reporting/ReportRuns/ReportRun.cs
+++ b/src/Stripe.net/Entities/Reporting/ReportRuns/ReportRun.cs
@@ -4,6 +4,9 @@ namespace Stripe.Reporting
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// The Report Run object represents an instance of a report type generated with specific
@@ -22,12 +25,18 @@ public class ReportRun : StripeEntity<ReportRun>, IHasId, IHasObject
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -35,6 +44,10 @@ public class ReportRun : StripeEntity<ReportRun>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -42,6 +55,9 @@ public class ReportRun : StripeEntity<ReportRun>, IHasId, IHasObject
         /// <c>status=failed</c>).
         /// </summary>
         [JsonProperty("error")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("error")]
+#endif
         public string Error { get; set; }
 
         /// <summary>
@@ -49,9 +65,15 @@ public class ReportRun : StripeEntity<ReportRun>, IHasId, IHasObject
         /// mode data.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         [JsonProperty("parameters")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("parameters")]
+#endif
         public ReportRunParameters Parameters { get; set; }
 
         /// <summary>
@@ -59,6 +81,9 @@ public class ReportRun : StripeEntity<ReportRun>, IHasId, IHasObject
         /// run, such as <c>"balance.summary.1"</c>.
         /// </summary>
         [JsonProperty("report_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("report_type")]
+#endif
         public string ReportType { get; set; }
 
         /// <summary>
@@ -66,6 +91,9 @@ public class ReportRun : StripeEntity<ReportRun>, IHasId, IHasObject
         /// <c>status=succeeded</c>).
         /// </summary>
         [JsonProperty("result")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("result")]
+#endif
         public File Result { get; set; }
 
         /// <summary>
@@ -75,6 +103,9 @@ public class ReportRun : StripeEntity<ReportRun>, IHasId, IHasObject
         /// this will be set to <c>failed</c> and the <c>error</c> field will be populated.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -83,6 +114,10 @@ public class ReportRun : StripeEntity<ReportRun>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("succeeded_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("succeeded_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? SucceededAt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Reporting/ReportRuns/ReportRunParameters.cs b/src/Stripe.net/Entities/Reporting/ReportRuns/ReportRunParameters.cs
index 101ac1ccb0..cf5095fc4c 100644
--- a/src/Stripe.net/Entities/Reporting/ReportRuns/ReportRunParameters.cs
+++ b/src/Stripe.net/Entities/Reporting/ReportRuns/ReportRunParameters.cs
@@ -5,6 +5,9 @@ namespace Stripe.Reporting
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReportRunParameters : StripeEntity<ReportRunParameters>
     {
@@ -12,18 +15,27 @@ public class ReportRunParameters : StripeEntity<ReportRunParameters>
         /// The set of output columns requested for inclusion in the report run.
         /// </summary>
         [JsonProperty("columns")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("columns")]
+#endif
         public List<string> Columns { get; set; }
 
         /// <summary>
         /// Connected account ID by which to filter the report run.
         /// </summary>
         [JsonProperty("connected_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("connected_account")]
+#endif
         public string ConnectedAccount { get; set; }
 
         /// <summary>
         /// Currency of objects to be included in the report run.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -33,6 +45,10 @@ public class ReportRunParameters : StripeEntity<ReportRunParameters>
         /// </summary>
         [JsonProperty("interval_end")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_end")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime IntervalEnd { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -42,18 +58,28 @@ public class ReportRunParameters : StripeEntity<ReportRunParameters>
         /// </summary>
         [JsonProperty("interval_start")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_start")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime IntervalStart { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// Payout ID by which to filter the report run.
         /// </summary>
         [JsonProperty("payout")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payout")]
+#endif
         public string Payout { get; set; }
 
         /// <summary>
         /// Category of balance transactions to be included in the report run.
         /// </summary>
         [JsonProperty("reporting_category")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reporting_category")]
+#endif
         public string ReportingCategory { get; set; }
 
         /// <summary>
@@ -63,6 +89,9 @@ public class ReportRunParameters : StripeEntity<ReportRunParameters>
         /// <c>interval_start</c> or <c>interval_end</c>.
         /// </summary>
         [JsonProperty("timezone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("timezone")]
+#endif
         public string Timezone { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Reporting/ReportTypes/ReportType.cs b/src/Stripe.net/Entities/Reporting/ReportTypes/ReportType.cs
index 809510202d..4df5fef142 100644
--- a/src/Stripe.net/Entities/Reporting/ReportTypes/ReportType.cs
+++ b/src/Stripe.net/Entities/Reporting/ReportTypes/ReportType.cs
@@ -5,6 +5,9 @@ namespace Stripe.Reporting
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// The Report Type resource corresponds to a particular type of report, such as the
@@ -25,12 +28,18 @@ public class ReportType : StripeEntity<ReportType>, IHasId, IHasObject
         /// of the Report Type</a>, such as <c>balance.summary.1</c>.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -39,6 +48,10 @@ public class ReportType : StripeEntity<ReportType>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("data_available_end")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("data_available_end")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime DataAvailableEnd { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -47,6 +60,10 @@ public class ReportType : StripeEntity<ReportType>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("data_available_start")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("data_available_start")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime DataAvailableStart { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -54,6 +71,9 @@ public class ReportType : StripeEntity<ReportType>, IHasId, IHasObject
         /// the Report Type doesn't support the <c>columns</c> parameter, this will be null.).
         /// </summary>
         [JsonProperty("default_columns")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_columns")]
+#endif
         public List<string> DefaultColumns { get; set; }
 
         /// <summary>
@@ -61,12 +81,18 @@ public class ReportType : StripeEntity<ReportType>, IHasId, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
         /// Human-readable name of the Report Type.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -74,6 +100,10 @@ public class ReportType : StripeEntity<ReportType>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("updated")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("updated")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Updated { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -81,6 +111,9 @@ public class ReportType : StripeEntity<ReportType>, IHasId, IHasObject
         /// same purpose, but may take different run parameters or have different result schemas.
         /// </summary>
         [JsonProperty("version")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("version")]
+#endif
         public long Version { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ReserveTransactions/ReserveTransaction.cs b/src/Stripe.net/Entities/ReserveTransactions/ReserveTransaction.cs
index 3ffad2f69c..bad1464d73 100644
--- a/src/Stripe.net/Entities/ReserveTransactions/ReserveTransaction.cs
+++ b/src/Stripe.net/Entities/ReserveTransactions/ReserveTransaction.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReserveTransaction : StripeEntity<ReserveTransaction>, IHasId, IHasObject, IBalanceTransactionSource
     {
@@ -9,15 +12,24 @@ public class ReserveTransaction : StripeEntity<ReserveTransaction>, IHasId, IHas
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -26,12 +38,18 @@ public class ReserveTransaction : StripeEntity<ReserveTransaction>, IHasId, IHas
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Reviews/Review.cs b/src/Stripe.net/Entities/Reviews/Review.cs
index fd414b63c4..54b80129bb 100644
--- a/src/Stripe.net/Entities/Reviews/Review.cs
+++ b/src/Stripe.net/Entities/Reviews/Review.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Reviews can be used to supplement automated fraud detection with human expertise.
@@ -11,24 +14,36 @@ namespace Stripe
     /// Learn more about <a href="https://stripe.com/radar">Radar</a> and reviewing payments <a
     /// href="https://stripe.com/docs/radar/reviews">here</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class Review : StripeEntity<Review>, IHasId, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// The ZIP or postal code of the card used, if applicable.
         /// </summary>
         [JsonProperty("billing_zip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_zip")]
+#endif
         public string BillingZip { get; set; }
 
         #region Expandable Charge
@@ -38,6 +53,9 @@ public class Review : StripeEntity<Review>, IHasId, IHasObject
         /// The charge associated with this review.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ChargeId
         {
             get => this.InternalCharge?.Id;
@@ -51,6 +69,9 @@ public string ChargeId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Charge Charge
         {
             get => this.InternalCharge?.ExpandedObject;
@@ -59,6 +80,10 @@ public Charge Charge
 
         [JsonProperty("charge")]
         [JsonConverter(typeof(ExpandableFieldConverter<Charge>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("charge")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Charge>))]
+#endif
         internal ExpandableField<Charge> InternalCharge { get; set; }
         #endregion
 
@@ -70,6 +95,9 @@ public Charge Charge
         /// <c>refunded_as_fraud</c>.
         /// </summary>
         [JsonProperty("closed_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("closed_reason")]
+#endif
         public string ClosedReason { get; set; }
 
         /// <summary>
@@ -77,12 +105,19 @@ public Charge Charge
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// The IP address where the payment originated.
         /// </summary>
         [JsonProperty("ip_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip_address")]
+#endif
         public string IpAddress { get; set; }
 
         /// <summary>
@@ -91,6 +126,9 @@ public Charge Charge
         /// used to determine a specific address.
         /// </summary>
         [JsonProperty("ip_address_location")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip_address_location")]
+#endif
         public ReviewLocation IpAddressLocation { get; set; }
 
         /// <summary>
@@ -98,12 +136,18 @@ public Charge Charge
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
         /// If <c>true</c>, the review needs action.
         /// </summary>
         [JsonProperty("open")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("open")]
+#endif
         public bool Open { get; set; }
 
         /// <summary>
@@ -111,6 +155,9 @@ public Charge Charge
         /// One of: <c>manual</c>, or <c>rule</c>.
         /// </summary>
         [JsonProperty("opened_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("opened_reason")]
+#endif
         public string OpenedReason { get; set; }
 
         #region Expandable PaymentIntent
@@ -120,6 +167,9 @@ public Charge Charge
         /// The PaymentIntent ID associated with this review, if one exists.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string PaymentIntentId
         {
             get => this.InternalPaymentIntent?.Id;
@@ -133,6 +183,9 @@ public string PaymentIntentId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PaymentIntent PaymentIntent
         {
             get => this.InternalPaymentIntent?.ExpandedObject;
@@ -141,6 +194,10 @@ public PaymentIntent PaymentIntent
 
         [JsonProperty("payment_intent")]
         [JsonConverter(typeof(ExpandableFieldConverter<PaymentIntent>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_intent")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PaymentIntent>))]
+#endif
         internal ExpandableField<PaymentIntent> InternalPaymentIntent { get; set; }
         #endregion
 
@@ -150,12 +207,18 @@ public PaymentIntent PaymentIntent
         /// <c>redacted</c>.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
 
         /// <summary>
         /// Information related to the browsing session of the user who initiated the payment.
         /// </summary>
         [JsonProperty("session")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("session")]
+#endif
         public ReviewSession Session { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Reviews/ReviewLocation.cs b/src/Stripe.net/Entities/Reviews/ReviewLocation.cs
index 8a02782638..0a20316120 100644
--- a/src/Stripe.net/Entities/Reviews/ReviewLocation.cs
+++ b/src/Stripe.net/Entities/Reviews/ReviewLocation.cs
@@ -2,23 +2,42 @@ namespace Stripe
 {
     using System;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
+
     using Stripe.Infrastructure;
 
     public class ReviewLocation : StripeEntity<ReviewLocation>
     {
         [JsonProperty("city")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("city")]
+#endif
         public string City { get; set; }
 
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         [JsonProperty("latitude")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("latitude")]
+#endif
         public decimal? Latitude { get; set; }
 
         [JsonProperty("longitude")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("longitude")]
+#endif
         public decimal? Longitude { get; set; }
 
         [JsonProperty("region")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("region")]
+#endif
         public string Region { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Reviews/ReviewSession.cs b/src/Stripe.net/Entities/Reviews/ReviewSession.cs
index 600ed838aa..6fafa533ed 100644
--- a/src/Stripe.net/Entities/Reviews/ReviewSession.cs
+++ b/src/Stripe.net/Entities/Reviews/ReviewSession.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReviewSession : StripeEntity<ReviewSession>
     {
@@ -9,6 +12,9 @@ public class ReviewSession : StripeEntity<ReviewSession>
         /// The browser used in this browser session (e.g., <c>Chrome</c>).
         /// </summary>
         [JsonProperty("browser")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("browser")]
+#endif
         public string Browser { get; set; }
 
         /// <summary>
@@ -16,18 +22,27 @@ public class ReviewSession : StripeEntity<ReviewSession>
         /// SM-G930T</c>).
         /// </summary>
         [JsonProperty("device")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("device")]
+#endif
         public string Device { get; set; }
 
         /// <summary>
         /// The platform for the browser session (e.g., <c>Macintosh</c>).
         /// </summary>
         [JsonProperty("platform")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("platform")]
+#endif
         public string Platform { get; set; }
 
         /// <summary>
         /// The version for the browser session (e.g., <c>61.0.3163.100</c>).
         /// </summary>
         [JsonProperty("version")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("version")]
+#endif
         public string Version { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupAttempts/SetupAttempt.cs b/src/Stripe.net/Entities/SetupAttempts/SetupAttempt.cs
index ec2813bad2..dcced0520f 100644
--- a/src/Stripe.net/Entities/SetupAttempts/SetupAttempt.cs
+++ b/src/Stripe.net/Entities/SetupAttempts/SetupAttempt.cs
@@ -5,24 +5,36 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A SetupAttempt describes one attempted confirmation of a SetupIntent, whether that
     /// confirmation is successful or unsuccessful. You can use SetupAttempts to inspect details
     /// of a specific attempt at setting up a payment method using a SetupIntent.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SetupAttempt : StripeEntity<SetupAttempt>, IHasId, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         #region Expandable Application
@@ -34,6 +46,9 @@ public class SetupAttempt : StripeEntity<SetupAttempt>, IHasId, IHasObject
         /// on the SetupIntent at the time of this confirmation.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ApplicationId
         {
             get => this.InternalApplication?.Id;
@@ -49,6 +64,9 @@ public string ApplicationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Application Application
         {
             get => this.InternalApplication?.ExpandedObject;
@@ -57,6 +75,10 @@ public Application Application
 
         [JsonProperty("application")]
         [JsonConverter(typeof(ExpandableFieldConverter<Application>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Application>))]
+#endif
         internal ExpandableField<Application> InternalApplication { get; set; }
         #endregion
 
@@ -70,6 +92,9 @@ public Application Application
         /// Customer.
         /// </summary>
         [JsonProperty("attach_to_self")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("attach_to_self")]
+#endif
         public bool AttachToSelf { get; set; }
 
         /// <summary>
@@ -77,6 +102,10 @@ public Application Application
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         #region Expandable Customer
@@ -88,6 +117,9 @@ public Application Application
         /// on the SetupIntent at the time of this confirmation.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerId
         {
             get => this.InternalCustomer?.Id;
@@ -103,6 +135,9 @@ public string CustomerId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Customer Customer
         {
             get => this.InternalCustomer?.ExpandedObject;
@@ -111,6 +146,10 @@ public Customer Customer
 
         [JsonProperty("customer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Customer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Customer>))]
+#endif
         internal ExpandableField<Customer> InternalCustomer { get; set; }
         #endregion
 
@@ -125,6 +164,9 @@ public Customer Customer
         /// One of: <c>inbound</c>, or <c>outbound</c>.
         /// </summary>
         [JsonProperty("flow_directions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flow_directions")]
+#endif
         public List<string> FlowDirections { get; set; }
 
         /// <summary>
@@ -132,6 +174,9 @@ public Customer Customer
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         #region Expandable OnBehalfOf
@@ -143,6 +188,9 @@ public Customer Customer
         /// on the SetupIntent at the time of this confirmation.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string OnBehalfOfId
         {
             get => this.InternalOnBehalfOf?.Id;
@@ -158,6 +206,9 @@ public string OnBehalfOfId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account OnBehalfOf
         {
             get => this.InternalOnBehalfOf?.ExpandedObject;
@@ -166,6 +217,10 @@ public Account OnBehalfOf
 
         [JsonProperty("on_behalf_of")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalOnBehalfOf { get; set; }
         #endregion
 
@@ -176,6 +231,9 @@ public Account OnBehalfOf
         /// ID of the payment method used with this SetupAttempt.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string PaymentMethodId
         {
             get => this.InternalPaymentMethod?.Id;
@@ -189,6 +247,9 @@ public string PaymentMethodId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PaymentMethod PaymentMethod
         {
             get => this.InternalPaymentMethod?.ExpandedObject;
@@ -197,16 +258,26 @@ public PaymentMethod PaymentMethod
 
         [JsonProperty("payment_method")]
         [JsonConverter(typeof(ExpandableFieldConverter<PaymentMethod>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PaymentMethod>))]
+#endif
         internal ExpandableField<PaymentMethod> InternalPaymentMethod { get; set; }
         #endregion
 
         [JsonProperty("payment_method_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_details")]
+#endif
         public SetupAttemptPaymentMethodDetails PaymentMethodDetails { get; set; }
 
         /// <summary>
         /// The error encountered during this attempt to confirm the SetupIntent, if any.
         /// </summary>
         [JsonProperty("setup_error")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_error")]
+#endif
         public StripeError SetupError { get; set; }
 
         #region Expandable SetupIntent
@@ -216,6 +287,9 @@ public PaymentMethod PaymentMethod
         /// ID of the SetupIntent that this attempt belongs to.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string SetupIntentId
         {
             get => this.InternalSetupIntent?.Id;
@@ -229,6 +303,9 @@ public string SetupIntentId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public SetupIntent SetupIntent
         {
             get => this.InternalSetupIntent?.ExpandedObject;
@@ -237,6 +314,10 @@ public SetupIntent SetupIntent
 
         [JsonProperty("setup_intent")]
         [JsonConverter(typeof(ExpandableFieldConverter<SetupIntent>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_intent")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<SetupIntent>))]
+#endif
         internal ExpandableField<SetupIntent> InternalSetupIntent { get; set; }
         #endregion
 
@@ -246,6 +327,9 @@ public SetupIntent SetupIntent
         /// <c>abandoned</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -255,6 +339,9 @@ public SetupIntent SetupIntent
         /// <c>on_session</c>.
         /// </summary>
         [JsonProperty("usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("usage")]
+#endif
         public string Usage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetails.cs b/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetails.cs
index fec1094590..1f4f06da67 100644
--- a/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetails.cs
+++ b/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetails.cs
@@ -2,61 +2,118 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupAttemptPaymentMethodDetails : StripeEntity<SetupAttemptPaymentMethodDetails>
     {
         [JsonProperty("acss_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acss_debit")]
+#endif
         public SetupAttemptPaymentMethodDetailsAcssDebit AcssDebit { get; set; }
 
         [JsonProperty("amazon_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amazon_pay")]
+#endif
         public SetupAttemptPaymentMethodDetailsAmazonPay AmazonPay { get; set; }
 
         [JsonProperty("au_becs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("au_becs_debit")]
+#endif
         public SetupAttemptPaymentMethodDetailsAuBecsDebit AuBecsDebit { get; set; }
 
         [JsonProperty("bacs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bacs_debit")]
+#endif
         public SetupAttemptPaymentMethodDetailsBacsDebit BacsDebit { get; set; }
 
         [JsonProperty("bancontact")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bancontact")]
+#endif
         public SetupAttemptPaymentMethodDetailsBancontact Bancontact { get; set; }
 
         [JsonProperty("boleto")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("boleto")]
+#endif
         public SetupAttemptPaymentMethodDetailsBoleto Boleto { get; set; }
 
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public SetupAttemptPaymentMethodDetailsCard Card { get; set; }
 
         [JsonProperty("card_present")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_present")]
+#endif
         public SetupAttemptPaymentMethodDetailsCardPresent CardPresent { get; set; }
 
         [JsonProperty("cashapp")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cashapp")]
+#endif
         public SetupAttemptPaymentMethodDetailsCashapp Cashapp { get; set; }
 
         [JsonProperty("ideal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ideal")]
+#endif
         public SetupAttemptPaymentMethodDetailsIdeal Ideal { get; set; }
 
         [JsonProperty("kakao_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kakao_pay")]
+#endif
         public SetupAttemptPaymentMethodDetailsKakaoPay KakaoPay { get; set; }
 
         [JsonProperty("klarna")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("klarna")]
+#endif
         public SetupAttemptPaymentMethodDetailsKlarna Klarna { get; set; }
 
         [JsonProperty("kr_card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kr_card")]
+#endif
         public SetupAttemptPaymentMethodDetailsKrCard KrCard { get; set; }
 
         [JsonProperty("link")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("link")]
+#endif
         public SetupAttemptPaymentMethodDetailsLink Link { get; set; }
 
         [JsonProperty("paypal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paypal")]
+#endif
         public SetupAttemptPaymentMethodDetailsPaypal Paypal { get; set; }
 
         [JsonProperty("revolut_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("revolut_pay")]
+#endif
         public SetupAttemptPaymentMethodDetailsRevolutPay RevolutPay { get; set; }
 
         [JsonProperty("sepa_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_debit")]
+#endif
         public SetupAttemptPaymentMethodDetailsSepaDebit SepaDebit { get; set; }
 
         [JsonProperty("sofort")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sofort")]
+#endif
         public SetupAttemptPaymentMethodDetailsSofort Sofort { get; set; }
 
         /// <summary>
@@ -65,9 +122,15 @@ public class SetupAttemptPaymentMethodDetails : StripeEntity<SetupAttemptPayment
         /// value. It contains confirmation-specific information for the payment method.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public SetupAttemptPaymentMethodDetailsUsBankAccount UsBankAccount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsBancontact.cs b/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsBancontact.cs
index 57ee427f63..0c94372217 100644
--- a/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsBancontact.cs
+++ b/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsBancontact.cs
@@ -3,25 +3,40 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SetupAttemptPaymentMethodDetailsBancontact : StripeEntity<SetupAttemptPaymentMethodDetailsBancontact>
     {
         /// <summary>
         /// Bank code of bank associated with the bank account.
         /// </summary>
         [JsonProperty("bank_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_code")]
+#endif
         public string BankCode { get; set; }
 
         /// <summary>
         /// Name of the bank associated with the bank account.
         /// </summary>
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         /// <summary>
         /// Bank Identifier Code of the bank associated with the bank account.
         /// </summary>
         [JsonProperty("bic")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bic")]
+#endif
         public string Bic { get; set; }
 
         #region Expandable GeneratedSepaDebit
@@ -31,6 +46,9 @@ public class SetupAttemptPaymentMethodDetailsBancontact : StripeEntity<SetupAtte
         /// The ID of the SEPA Direct Debit PaymentMethod which was generated by this SetupAttempt.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string GeneratedSepaDebitId
         {
             get => this.InternalGeneratedSepaDebit?.Id;
@@ -44,6 +62,9 @@ public string GeneratedSepaDebitId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PaymentMethod GeneratedSepaDebit
         {
             get => this.InternalGeneratedSepaDebit?.ExpandedObject;
@@ -52,6 +73,10 @@ public PaymentMethod GeneratedSepaDebit
 
         [JsonProperty("generated_sepa_debit")]
         [JsonConverter(typeof(ExpandableFieldConverter<PaymentMethod>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("generated_sepa_debit")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PaymentMethod>))]
+#endif
         internal ExpandableField<PaymentMethod> InternalGeneratedSepaDebit { get; set; }
         #endregion
 
@@ -63,6 +88,9 @@ public PaymentMethod GeneratedSepaDebit
         /// SetupAttempt.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string GeneratedSepaDebitMandateId
         {
             get => this.InternalGeneratedSepaDebitMandate?.Id;
@@ -77,6 +105,9 @@ public string GeneratedSepaDebitMandateId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Mandate GeneratedSepaDebitMandate
         {
             get => this.InternalGeneratedSepaDebitMandate?.ExpandedObject;
@@ -85,6 +116,10 @@ public Mandate GeneratedSepaDebitMandate
 
         [JsonProperty("generated_sepa_debit_mandate")]
         [JsonConverter(typeof(ExpandableFieldConverter<Mandate>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("generated_sepa_debit_mandate")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Mandate>))]
+#endif
         internal ExpandableField<Mandate> InternalGeneratedSepaDebitMandate { get; set; }
         #endregion
 
@@ -92,6 +127,9 @@ public Mandate GeneratedSepaDebitMandate
         /// Last four characters of the IBAN.
         /// </summary>
         [JsonProperty("iban_last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iban_last4")]
+#endif
         public string IbanLast4 { get; set; }
 
         /// <summary>
@@ -100,6 +138,9 @@ public Mandate GeneratedSepaDebitMandate
         /// One of: <c>de</c>, <c>en</c>, <c>fr</c>, or <c>nl</c>.
         /// </summary>
         [JsonProperty("preferred_language")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_language")]
+#endif
         public string PreferredLanguage { get; set; }
 
         /// <summary>
@@ -107,6 +148,9 @@ public Mandate GeneratedSepaDebitMandate
         /// supported) at the time of authorization or settlement. They cannot be set or mutated.
         /// </summary>
         [JsonProperty("verified_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verified_name")]
+#endif
         public string VerifiedName { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsCard.cs b/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsCard.cs
index 79b0adcb48..15c2cd61d8 100644
--- a/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsCard.cs
+++ b/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsCard.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupAttemptPaymentMethodDetailsCard : StripeEntity<SetupAttemptPaymentMethodDetailsCard>
     {
@@ -11,12 +14,18 @@ public class SetupAttemptPaymentMethodDetailsCard : StripeEntity<SetupAttemptPay
         /// <c>unknown</c>.
         /// </summary>
         [JsonProperty("brand")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brand")]
+#endif
         public string Brand { get; set; }
 
         /// <summary>
         /// Check results by Card networks on Card address and CVC at the time of authorization.
         /// </summary>
         [JsonProperty("checks")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("checks")]
+#endif
         public SetupAttemptPaymentMethodDetailsCardChecks Checks { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class SetupAttemptPaymentMethodDetailsCard : StripeEntity<SetupAttemptPay
         /// to get a sense of the international breakdown of cards you've collected.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -31,18 +43,27 @@ public class SetupAttemptPaymentMethodDetailsCard : StripeEntity<SetupAttemptPay
         /// only and not typically available in standard API requests.).
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// Two-digit number representing the card's expiration month.
         /// </summary>
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public long? ExpMonth { get; set; }
 
         /// <summary>
         /// Four-digit number representing the card's expiration year.
         /// </summary>
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public long? ExpYear { get; set; }
 
         /// <summary>
@@ -55,6 +76,9 @@ public class SetupAttemptPaymentMethodDetailsCard : StripeEntity<SetupAttemptPay
         /// fingerprints for the same card---one for India and one for the rest of the world.</em>.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
@@ -62,6 +86,9 @@ public class SetupAttemptPaymentMethodDetailsCard : StripeEntity<SetupAttemptPay
         /// <c>unknown</c>.
         /// </summary>
         [JsonProperty("funding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding")]
+#endif
         public string Funding { get; set; }
 
         /// <summary>
@@ -69,6 +96,9 @@ public class SetupAttemptPaymentMethodDetailsCard : StripeEntity<SetupAttemptPay
         /// available in standard API requests.).
         /// </summary>
         [JsonProperty("iin")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iin")]
+#endif
         public string Iin { get; set; }
 
         /// <summary>
@@ -76,12 +106,18 @@ public class SetupAttemptPaymentMethodDetailsCard : StripeEntity<SetupAttemptPay
         /// in standard API requests.).
         /// </summary>
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public string Issuer { get; set; }
 
         /// <summary>
         /// The last four digits of the card.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
@@ -91,18 +127,27 @@ public class SetupAttemptPaymentMethodDetailsCard : StripeEntity<SetupAttemptPay
         /// <c>visa</c>, or <c>unknown</c>.
         /// </summary>
         [JsonProperty("network")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network")]
+#endif
         public string Network { get; set; }
 
         /// <summary>
         /// Populated if this authorization used 3D Secure authentication.
         /// </summary>
         [JsonProperty("three_d_secure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("three_d_secure")]
+#endif
         public SetupAttemptPaymentMethodDetailsCardThreeDSecure ThreeDSecure { get; set; }
 
         /// <summary>
         /// If this Card is part of a card wallet, this contains the details of the card wallet.
         /// </summary>
         [JsonProperty("wallet")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wallet")]
+#endif
         public SetupAttemptPaymentMethodDetailsCardWallet Wallet { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsCardChecks.cs b/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsCardChecks.cs
index 93fea37676..f6127fb144 100644
--- a/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsCardChecks.cs
+++ b/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsCardChecks.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupAttemptPaymentMethodDetailsCardChecks : StripeEntity<SetupAttemptPaymentMethodDetailsCardChecks>
     {
@@ -10,6 +13,9 @@ public class SetupAttemptPaymentMethodDetailsCardChecks : StripeEntity<SetupAtte
         /// <c>unavailable</c>, or <c>unchecked</c>.
         /// </summary>
         [JsonProperty("address_line1_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_line1_check")]
+#endif
         public string AddressLine1Check { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class SetupAttemptPaymentMethodDetailsCardChecks : StripeEntity<SetupAtte
         /// <c>fail</c>, <c>unavailable</c>, or <c>unchecked</c>.
         /// </summary>
         [JsonProperty("address_postal_code_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_postal_code_check")]
+#endif
         public string AddressPostalCodeCheck { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class SetupAttemptPaymentMethodDetailsCardChecks : StripeEntity<SetupAtte
         /// <c>unavailable</c>, or <c>unchecked</c>.
         /// </summary>
         [JsonProperty("cvc_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cvc_check")]
+#endif
         public string CvcCheck { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsCardPresent.cs b/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsCardPresent.cs
index dfb583afa9..9b519f1f61 100644
--- a/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsCardPresent.cs
+++ b/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsCardPresent.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SetupAttemptPaymentMethodDetailsCardPresent : StripeEntity<SetupAttemptPaymentMethodDetailsCardPresent>
     {
         #region Expandable GeneratedCard
@@ -13,6 +19,9 @@ public class SetupAttemptPaymentMethodDetailsCardPresent : StripeEntity<SetupAtt
         /// The ID of the Card PaymentMethod which was generated by this SetupAttempt.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string GeneratedCardId
         {
             get => this.InternalGeneratedCard?.Id;
@@ -26,6 +35,9 @@ public string GeneratedCardId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PaymentMethod GeneratedCard
         {
             get => this.InternalGeneratedCard?.ExpandedObject;
@@ -34,6 +46,10 @@ public PaymentMethod GeneratedCard
 
         [JsonProperty("generated_card")]
         [JsonConverter(typeof(ExpandableFieldConverter<PaymentMethod>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("generated_card")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PaymentMethod>))]
+#endif
         internal ExpandableField<PaymentMethod> InternalGeneratedCard { get; set; }
         #endregion
 
@@ -41,6 +57,9 @@ public PaymentMethod GeneratedCard
         /// Details about payments collected offline.
         /// </summary>
         [JsonProperty("offline")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("offline")]
+#endif
         public SetupAttemptPaymentMethodDetailsCardPresentOffline Offline { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsCardPresentOffline.cs b/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsCardPresentOffline.cs
index b4dba25e96..b22b5d3472 100644
--- a/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsCardPresentOffline.cs
+++ b/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsCardPresentOffline.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupAttemptPaymentMethodDetailsCardPresentOffline : StripeEntity<SetupAttemptPaymentMethodDetailsCardPresentOffline>
     {
@@ -12,12 +15,19 @@ public class SetupAttemptPaymentMethodDetailsCardPresentOffline : StripeEntity<S
         /// </summary>
         [JsonProperty("stored_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("stored_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? StoredAt { get; set; }
 
         /// <summary>
         /// The method used to process this payment method offline. Only deferred is allowed.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsCardThreeDSecure.cs b/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsCardThreeDSecure.cs
index b514c1947a..55c77b668b 100644
--- a/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsCardThreeDSecure.cs
+++ b/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsCardThreeDSecure.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupAttemptPaymentMethodDetailsCardThreeDSecure : StripeEntity<SetupAttemptPaymentMethodDetailsCardThreeDSecure>
     {
@@ -10,6 +13,9 @@ public class SetupAttemptPaymentMethodDetailsCardThreeDSecure : StripeEntity<Set
         /// One of: <c>challenge</c>, or <c>frictionless</c>.
         /// </summary>
         [JsonProperty("authentication_flow")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("authentication_flow")]
+#endif
         public string AuthenticationFlow { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class SetupAttemptPaymentMethodDetailsCardThreeDSecure : StripeEntity<Set
         /// One of: <c>01</c>, <c>02</c>, <c>05</c>, <c>06</c>, or <c>07</c>.
         /// </summary>
         [JsonProperty("electronic_commerce_indicator")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("electronic_commerce_indicator")]
+#endif
         public string ElectronicCommerceIndicator { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class SetupAttemptPaymentMethodDetailsCardThreeDSecure : StripeEntity<Set
         /// <c>failed</c>, <c>not_supported</c>, or <c>processing_error</c>.
         /// </summary>
         [JsonProperty("result")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("result")]
+#endif
         public string Result { get; set; }
 
         /// <summary>
@@ -35,6 +47,9 @@ public class SetupAttemptPaymentMethodDetailsCardThreeDSecure : StripeEntity<Set
         /// <c>network_not_supported</c>, <c>protocol_error</c>, or <c>rejected</c>.
         /// </summary>
         [JsonProperty("result_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("result_reason")]
+#endif
         public string ResultReason { get; set; }
 
         /// <summary>
@@ -42,6 +57,9 @@ public class SetupAttemptPaymentMethodDetailsCardThreeDSecure : StripeEntity<Set
         /// payment.
         /// </summary>
         [JsonProperty("transaction_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_id")]
+#endif
         public string TransactionId { get; set; }
 
         /// <summary>
@@ -49,6 +67,9 @@ public class SetupAttemptPaymentMethodDetailsCardThreeDSecure : StripeEntity<Set
         /// One of: <c>1.0.2</c>, <c>2.1.0</c>, or <c>2.2.0</c>.
         /// </summary>
         [JsonProperty("version")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("version")]
+#endif
         public string Version { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsCardWallet.cs b/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsCardWallet.cs
index 3edd47cc32..b16da097e8 100644
--- a/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsCardWallet.cs
+++ b/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsCardWallet.cs
@@ -2,13 +2,22 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupAttemptPaymentMethodDetailsCardWallet : StripeEntity<SetupAttemptPaymentMethodDetailsCardWallet>
     {
         [JsonProperty("apple_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("apple_pay")]
+#endif
         public SetupAttemptPaymentMethodDetailsCardWalletApplePay ApplePay { get; set; }
 
         [JsonProperty("google_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("google_pay")]
+#endif
         public SetupAttemptPaymentMethodDetailsCardWalletGooglePay GooglePay { get; set; }
 
         /// <summary>
@@ -18,6 +27,9 @@ public class SetupAttemptPaymentMethodDetailsCardWallet : StripeEntity<SetupAtte
         /// One of: <c>apple_pay</c>, <c>google_pay</c>, or <c>link</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsIdeal.cs b/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsIdeal.cs
index 4495fed7db..b5cb955132 100644
--- a/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsIdeal.cs
+++ b/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsIdeal.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SetupAttemptPaymentMethodDetailsIdeal : StripeEntity<SetupAttemptPaymentMethodDetailsIdeal>
     {
         /// <summary>
@@ -17,6 +23,9 @@ public class SetupAttemptPaymentMethodDetailsIdeal : StripeEntity<SetupAttemptPa
         /// <c>yoursafe</c>.
         /// </summary>
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class SetupAttemptPaymentMethodDetailsIdeal : StripeEntity<SetupAttemptPa
         /// <c>REVOLT21</c>, <c>SNSBNL2A</c>, or <c>TRIONL2U</c>.
         /// </summary>
         [JsonProperty("bic")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bic")]
+#endif
         public string Bic { get; set; }
 
         #region Expandable GeneratedSepaDebit
@@ -36,6 +48,9 @@ public class SetupAttemptPaymentMethodDetailsIdeal : StripeEntity<SetupAttemptPa
         /// The ID of the SEPA Direct Debit PaymentMethod which was generated by this SetupAttempt.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string GeneratedSepaDebitId
         {
             get => this.InternalGeneratedSepaDebit?.Id;
@@ -49,6 +64,9 @@ public string GeneratedSepaDebitId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PaymentMethod GeneratedSepaDebit
         {
             get => this.InternalGeneratedSepaDebit?.ExpandedObject;
@@ -57,6 +75,10 @@ public PaymentMethod GeneratedSepaDebit
 
         [JsonProperty("generated_sepa_debit")]
         [JsonConverter(typeof(ExpandableFieldConverter<PaymentMethod>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("generated_sepa_debit")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PaymentMethod>))]
+#endif
         internal ExpandableField<PaymentMethod> InternalGeneratedSepaDebit { get; set; }
         #endregion
 
@@ -68,6 +90,9 @@ public PaymentMethod GeneratedSepaDebit
         /// SetupAttempt.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string GeneratedSepaDebitMandateId
         {
             get => this.InternalGeneratedSepaDebitMandate?.Id;
@@ -82,6 +107,9 @@ public string GeneratedSepaDebitMandateId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Mandate GeneratedSepaDebitMandate
         {
             get => this.InternalGeneratedSepaDebitMandate?.ExpandedObject;
@@ -90,6 +118,10 @@ public Mandate GeneratedSepaDebitMandate
 
         [JsonProperty("generated_sepa_debit_mandate")]
         [JsonConverter(typeof(ExpandableFieldConverter<Mandate>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("generated_sepa_debit_mandate")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Mandate>))]
+#endif
         internal ExpandableField<Mandate> InternalGeneratedSepaDebitMandate { get; set; }
         #endregion
 
@@ -97,6 +129,9 @@ public Mandate GeneratedSepaDebitMandate
         /// Last four characters of the IBAN.
         /// </summary>
         [JsonProperty("iban_last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iban_last4")]
+#endif
         public string IbanLast4 { get; set; }
 
         /// <summary>
@@ -104,6 +139,9 @@ public Mandate GeneratedSepaDebitMandate
         /// supported) at the time of authorization or settlement. They cannot be set or mutated.
         /// </summary>
         [JsonProperty("verified_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verified_name")]
+#endif
         public string VerifiedName { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsSofort.cs b/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsSofort.cs
index 0080e2ce3c..be73a642bd 100644
--- a/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsSofort.cs
+++ b/src/Stripe.net/Entities/SetupAttempts/SetupAttemptPaymentMethodDetailsSofort.cs
@@ -3,25 +3,40 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SetupAttemptPaymentMethodDetailsSofort : StripeEntity<SetupAttemptPaymentMethodDetailsSofort>
     {
         /// <summary>
         /// Bank code of bank associated with the bank account.
         /// </summary>
         [JsonProperty("bank_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_code")]
+#endif
         public string BankCode { get; set; }
 
         /// <summary>
         /// Name of the bank associated with the bank account.
         /// </summary>
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         /// <summary>
         /// Bank Identifier Code of the bank associated with the bank account.
         /// </summary>
         [JsonProperty("bic")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bic")]
+#endif
         public string Bic { get; set; }
 
         #region Expandable GeneratedSepaDebit
@@ -31,6 +46,9 @@ public class SetupAttemptPaymentMethodDetailsSofort : StripeEntity<SetupAttemptP
         /// The ID of the SEPA Direct Debit PaymentMethod which was generated by this SetupAttempt.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string GeneratedSepaDebitId
         {
             get => this.InternalGeneratedSepaDebit?.Id;
@@ -44,6 +62,9 @@ public string GeneratedSepaDebitId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PaymentMethod GeneratedSepaDebit
         {
             get => this.InternalGeneratedSepaDebit?.ExpandedObject;
@@ -52,6 +73,10 @@ public PaymentMethod GeneratedSepaDebit
 
         [JsonProperty("generated_sepa_debit")]
         [JsonConverter(typeof(ExpandableFieldConverter<PaymentMethod>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("generated_sepa_debit")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PaymentMethod>))]
+#endif
         internal ExpandableField<PaymentMethod> InternalGeneratedSepaDebit { get; set; }
         #endregion
 
@@ -63,6 +88,9 @@ public PaymentMethod GeneratedSepaDebit
         /// SetupAttempt.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string GeneratedSepaDebitMandateId
         {
             get => this.InternalGeneratedSepaDebitMandate?.Id;
@@ -77,6 +105,9 @@ public string GeneratedSepaDebitMandateId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Mandate GeneratedSepaDebitMandate
         {
             get => this.InternalGeneratedSepaDebitMandate?.ExpandedObject;
@@ -85,6 +116,10 @@ public Mandate GeneratedSepaDebitMandate
 
         [JsonProperty("generated_sepa_debit_mandate")]
         [JsonConverter(typeof(ExpandableFieldConverter<Mandate>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("generated_sepa_debit_mandate")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Mandate>))]
+#endif
         internal ExpandableField<Mandate> InternalGeneratedSepaDebitMandate { get; set; }
         #endregion
 
@@ -92,6 +127,9 @@ public Mandate GeneratedSepaDebitMandate
         /// Last four characters of the IBAN.
         /// </summary>
         [JsonProperty("iban_last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iban_last4")]
+#endif
         public string IbanLast4 { get; set; }
 
         /// <summary>
@@ -100,6 +138,9 @@ public Mandate GeneratedSepaDebitMandate
         /// One of: <c>de</c>, <c>en</c>, <c>fr</c>, or <c>nl</c>.
         /// </summary>
         [JsonProperty("preferred_language")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_language")]
+#endif
         public string PreferredLanguage { get; set; }
 
         /// <summary>
@@ -107,6 +148,9 @@ public Mandate GeneratedSepaDebitMandate
         /// supported) at the time of authorization or settlement. They cannot be set or mutated.
         /// </summary>
         [JsonProperty("verified_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verified_name")]
+#endif
         public string VerifiedName { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupIntents/SetupIntent.cs b/src/Stripe.net/Entities/SetupIntents/SetupIntent.cs
index 70369dcdc5..5a44fe5e1b 100644
--- a/src/Stripe.net/Entities/SetupIntents/SetupIntent.cs
+++ b/src/Stripe.net/Entities/SetupIntents/SetupIntent.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A SetupIntent guides you through the process of setting up and saving a customer's
@@ -40,18 +43,27 @@ namespace Stripe
     /// Related guide: <a href="https://docs.stripe.com/payments/setup-intents">Setup Intents
     /// API</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SetupIntent : StripeEntity<SetupIntent>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         #region Expandable Application
@@ -61,6 +73,9 @@ public class SetupIntent : StripeEntity<SetupIntent>, IHasId, IHasMetadata, IHas
         /// ID of the Connect application that created the SetupIntent.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ApplicationId
         {
             get => this.InternalApplication?.Id;
@@ -74,6 +89,9 @@ public string ApplicationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Application Application
         {
             get => this.InternalApplication?.ExpandedObject;
@@ -82,6 +100,10 @@ public Application Application
 
         [JsonProperty("application")]
         [JsonConverter(typeof(ExpandableFieldConverter<Application>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Application>))]
+#endif
         internal ExpandableField<Application> InternalApplication { get; set; }
         #endregion
 
@@ -95,12 +117,18 @@ public Application Application
         /// Customer.
         /// </summary>
         [JsonProperty("attach_to_self")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("attach_to_self")]
+#endif
         public bool AttachToSelf { get; set; }
 
         /// <summary>
         /// Settings for dynamic payment methods compatible with this Setup Intent.
         /// </summary>
         [JsonProperty("automatic_payment_methods")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatic_payment_methods")]
+#endif
         public SetupIntentAutomaticPaymentMethods AutomaticPaymentMethods { get; set; }
 
         /// <summary>
@@ -109,6 +137,9 @@ public Application Application
         /// One of: <c>abandoned</c>, <c>duplicate</c>, or <c>requested_by_customer</c>.
         /// </summary>
         [JsonProperty("cancellation_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancellation_reason")]
+#endif
         public string CancellationReason { get; set; }
 
         /// <summary>
@@ -120,6 +151,9 @@ public Application Application
         /// have TLS enabled on any page that includes the client secret.
         /// </summary>
         [JsonProperty("client_secret")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("client_secret")]
+#endif
         public string ClientSecret { get; set; }
 
         /// <summary>
@@ -127,6 +161,10 @@ public Application Application
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         #region Expandable Customer
@@ -140,6 +178,9 @@ public Application Application
         /// SetupIntent.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerId
         {
             get => this.InternalCustomer?.Id;
@@ -157,6 +198,9 @@ public string CustomerId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Customer Customer
         {
             get => this.InternalCustomer?.ExpandedObject;
@@ -165,6 +209,10 @@ public Customer Customer
 
         [JsonProperty("customer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Customer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Customer>))]
+#endif
         internal ExpandableField<Customer> InternalCustomer { get; set; }
         #endregion
 
@@ -172,6 +220,9 @@ public Customer Customer
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -185,12 +236,18 @@ public Customer Customer
         /// One of: <c>inbound</c>, or <c>outbound</c>.
         /// </summary>
         [JsonProperty("flow_directions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flow_directions")]
+#endif
         public List<string> FlowDirections { get; set; }
 
         /// <summary>
         /// The error encountered in the previous SetupIntent confirmation.
         /// </summary>
         [JsonProperty("last_setup_error")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_setup_error")]
+#endif
         public StripeError LastSetupError { get; set; }
 
         #region Expandable LatestAttempt
@@ -200,6 +257,9 @@ public Customer Customer
         /// The most recent SetupAttempt for this SetupIntent.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string LatestAttemptId
         {
             get => this.InternalLatestAttempt?.Id;
@@ -213,6 +273,9 @@ public string LatestAttemptId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public SetupAttempt LatestAttempt
         {
             get => this.InternalLatestAttempt?.ExpandedObject;
@@ -221,6 +284,10 @@ public SetupAttempt LatestAttempt
 
         [JsonProperty("latest_attempt")]
         [JsonConverter(typeof(ExpandableFieldConverter<SetupAttempt>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("latest_attempt")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<SetupAttempt>))]
+#endif
         internal ExpandableField<SetupAttempt> InternalLatestAttempt { get; set; }
         #endregion
 
@@ -229,6 +296,9 @@ public SetupAttempt LatestAttempt
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         #region Expandable Mandate
@@ -238,6 +308,9 @@ public SetupAttempt LatestAttempt
         /// ID of the multi use Mandate generated by the SetupIntent.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string MandateId
         {
             get => this.InternalMandate?.Id;
@@ -251,6 +324,9 @@ public string MandateId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Mandate Mandate
         {
             get => this.InternalMandate?.ExpandedObject;
@@ -259,6 +335,10 @@ public Mandate Mandate
 
         [JsonProperty("mandate")]
         [JsonConverter(typeof(ExpandableFieldConverter<Mandate>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Mandate>))]
+#endif
         internal ExpandableField<Mandate> InternalMandate { get; set; }
         #endregion
 
@@ -268,6 +348,9 @@ public Mandate Mandate
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -275,6 +358,9 @@ public Mandate Mandate
         /// customer to continue payment setup.
         /// </summary>
         [JsonProperty("next_action")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("next_action")]
+#endif
         public SetupIntentNextAction NextAction { get; set; }
 
         #region Expandable OnBehalfOf
@@ -284,6 +370,9 @@ public Mandate Mandate
         /// The account (if any) for which the setup is intended.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string OnBehalfOfId
         {
             get => this.InternalOnBehalfOf?.Id;
@@ -297,6 +386,9 @@ public string OnBehalfOfId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account OnBehalfOf
         {
             get => this.InternalOnBehalfOf?.ExpandedObject;
@@ -305,6 +397,10 @@ public Account OnBehalfOf
 
         [JsonProperty("on_behalf_of")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalOnBehalfOf { get; set; }
         #endregion
 
@@ -318,6 +414,9 @@ public Account OnBehalfOf
         /// associated with the <c>latest_attempt</c> is attached to the Customer instead.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string PaymentMethodId
         {
             get => this.InternalPaymentMethod?.Id;
@@ -334,6 +433,9 @@ public string PaymentMethodId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PaymentMethod PaymentMethod
         {
             get => this.InternalPaymentMethod?.ExpandedObject;
@@ -342,6 +444,10 @@ public PaymentMethod PaymentMethod
 
         [JsonProperty("payment_method")]
         [JsonConverter(typeof(ExpandableFieldConverter<PaymentMethod>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PaymentMethod>))]
+#endif
         internal ExpandableField<PaymentMethod> InternalPaymentMethod { get; set; }
         #endregion
 
@@ -351,18 +457,27 @@ public PaymentMethod PaymentMethod
         /// configuration</a> used for this Setup Intent.
         /// </summary>
         [JsonProperty("payment_method_configuration_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_configuration_details")]
+#endif
         public SetupIntentPaymentMethodConfigurationDetails PaymentMethodConfigurationDetails { get; set; }
 
         /// <summary>
         /// Payment method-specific configuration for this SetupIntent.
         /// </summary>
         [JsonProperty("payment_method_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_options")]
+#endif
         public SetupIntentPaymentMethodOptions PaymentMethodOptions { get; set; }
 
         /// <summary>
         /// The list of payment method types (e.g. card) that this SetupIntent is allowed to set up.
         /// </summary>
         [JsonProperty("payment_method_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_types")]
+#endif
         public List<string> PaymentMethodTypes { get; set; }
 
         #region Expandable SingleUseMandate
@@ -372,6 +487,9 @@ public PaymentMethod PaymentMethod
         /// ID of the single_use Mandate generated by the SetupIntent.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string SingleUseMandateId
         {
             get => this.InternalSingleUseMandate?.Id;
@@ -385,6 +503,9 @@ public string SingleUseMandateId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Mandate SingleUseMandate
         {
             get => this.InternalSingleUseMandate?.ExpandedObject;
@@ -393,6 +514,10 @@ public Mandate SingleUseMandate
 
         [JsonProperty("single_use_mandate")]
         [JsonConverter(typeof(ExpandableFieldConverter<Mandate>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("single_use_mandate")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Mandate>))]
+#endif
         internal ExpandableField<Mandate> InternalSingleUseMandate { get; set; }
         #endregion
 
@@ -404,6 +529,9 @@ public Mandate SingleUseMandate
         /// <c>requires_confirmation</c>, <c>requires_payment_method</c>, or <c>succeeded</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -414,6 +542,9 @@ public Mandate SingleUseMandate
         /// your checkout flow. If not provided, this value defaults to <c>off_session</c>.
         /// </summary>
         [JsonProperty("usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("usage")]
+#endif
         public string Usage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupIntents/SetupIntentAutomaticPaymentMethods.cs b/src/Stripe.net/Entities/SetupIntents/SetupIntentAutomaticPaymentMethods.cs
index 54c6aa257d..c4a5b81352 100644
--- a/src/Stripe.net/Entities/SetupIntents/SetupIntentAutomaticPaymentMethods.cs
+++ b/src/Stripe.net/Entities/SetupIntents/SetupIntentAutomaticPaymentMethods.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentAutomaticPaymentMethods : StripeEntity<SetupIntentAutomaticPaymentMethods>
     {
@@ -16,12 +19,18 @@ public class SetupIntentAutomaticPaymentMethods : StripeEntity<SetupIntentAutoma
         /// One of: <c>always</c>, or <c>never</c>.
         /// </summary>
         [JsonProperty("allow_redirects")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allow_redirects")]
+#endif
         public string AllowRedirects { get; set; }
 
         /// <summary>
         /// Automatically calculates compatible payment methods.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupIntents/SetupIntentNextAction.cs b/src/Stripe.net/Entities/SetupIntents/SetupIntentNextAction.cs
index aba0018871..fc038a83c5 100644
--- a/src/Stripe.net/Entities/SetupIntents/SetupIntentNextAction.cs
+++ b/src/Stripe.net/Entities/SetupIntents/SetupIntentNextAction.cs
@@ -2,13 +2,22 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentNextAction : StripeEntity<SetupIntentNextAction>
     {
         [JsonProperty("cashapp_handle_redirect_or_display_qr_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cashapp_handle_redirect_or_display_qr_code")]
+#endif
         public SetupIntentNextActionCashappHandleRedirectOrDisplayQrCode CashappHandleRedirectOrDisplayQrCode { get; set; }
 
         [JsonProperty("redirect_to_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("redirect_to_url")]
+#endif
         public SetupIntentNextActionRedirectToUrl RedirectToUrl { get; set; }
 
         /// <summary>
@@ -17,6 +26,9 @@ public class SetupIntentNextAction : StripeEntity<SetupIntentNextAction>
         /// <c>verify_with_microdeposits</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
@@ -25,9 +37,15 @@ public class SetupIntentNextAction : StripeEntity<SetupIntentNextAction>
         /// change and is only intended to be used by Stripe.js.
         /// </summary>
         [JsonProperty("use_stripe_sdk")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("use_stripe_sdk")]
+#endif
         public SetupIntentNextActionUseStripeSdk UseStripeSdk { get; set; }
 
         [JsonProperty("verify_with_microdeposits")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verify_with_microdeposits")]
+#endif
         public SetupIntentNextActionVerifyWithMicrodeposits VerifyWithMicrodeposits { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupIntents/SetupIntentNextActionCashappHandleRedirectOrDisplayQrCode.cs b/src/Stripe.net/Entities/SetupIntents/SetupIntentNextActionCashappHandleRedirectOrDisplayQrCode.cs
index d2f9fd2716..74a970f600 100644
--- a/src/Stripe.net/Entities/SetupIntents/SetupIntentNextActionCashappHandleRedirectOrDisplayQrCode.cs
+++ b/src/Stripe.net/Entities/SetupIntents/SetupIntentNextActionCashappHandleRedirectOrDisplayQrCode.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentNextActionCashappHandleRedirectOrDisplayQrCode : StripeEntity<SetupIntentNextActionCashappHandleRedirectOrDisplayQrCode>
     {
@@ -10,15 +13,24 @@ public class SetupIntentNextActionCashappHandleRedirectOrDisplayQrCode : StripeE
         /// QR code, and supports QR code refreshing on expiration.
         /// </summary>
         [JsonProperty("hosted_instructions_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hosted_instructions_url")]
+#endif
         public string HostedInstructionsUrl { get; set; }
 
         /// <summary>
         /// The url for mobile redirect based auth.
         /// </summary>
         [JsonProperty("mobile_auth_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mobile_auth_url")]
+#endif
         public string MobileAuthUrl { get; set; }
 
         [JsonProperty("qr_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("qr_code")]
+#endif
         public SetupIntentNextActionCashappHandleRedirectOrDisplayQrCodeQrCode QrCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupIntents/SetupIntentNextActionCashappHandleRedirectOrDisplayQrCodeQrCode.cs b/src/Stripe.net/Entities/SetupIntents/SetupIntentNextActionCashappHandleRedirectOrDisplayQrCodeQrCode.cs
index 3f0e2facb3..c1ea63cb44 100644
--- a/src/Stripe.net/Entities/SetupIntents/SetupIntentNextActionCashappHandleRedirectOrDisplayQrCodeQrCode.cs
+++ b/src/Stripe.net/Entities/SetupIntents/SetupIntentNextActionCashappHandleRedirectOrDisplayQrCodeQrCode.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentNextActionCashappHandleRedirectOrDisplayQrCodeQrCode : StripeEntity<SetupIntentNextActionCashappHandleRedirectOrDisplayQrCodeQrCode>
     {
@@ -12,18 +15,28 @@ public class SetupIntentNextActionCashappHandleRedirectOrDisplayQrCodeQrCode : S
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime ExpiresAt { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// The image_url_png string used to render QR code.
         /// </summary>
         [JsonProperty("image_url_png")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("image_url_png")]
+#endif
         public string ImageUrlPng { get; set; }
 
         /// <summary>
         /// The image_url_svg string used to render QR code.
         /// </summary>
         [JsonProperty("image_url_svg")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("image_url_svg")]
+#endif
         public string ImageUrlSvg { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupIntents/SetupIntentNextActionRedirectToUrl.cs b/src/Stripe.net/Entities/SetupIntents/SetupIntentNextActionRedirectToUrl.cs
index f599166c34..881a4c7889 100644
--- a/src/Stripe.net/Entities/SetupIntents/SetupIntentNextActionRedirectToUrl.cs
+++ b/src/Stripe.net/Entities/SetupIntents/SetupIntentNextActionRedirectToUrl.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentNextActionRedirectToUrl : StripeEntity<SetupIntentNextActionRedirectToUrl>
     {
@@ -10,12 +13,18 @@ public class SetupIntentNextActionRedirectToUrl : StripeEntity<SetupIntentNextAc
         /// redirected to this specified URL after completion.
         /// </summary>
         [JsonProperty("return_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_url")]
+#endif
         public string ReturnUrl { get; set; }
 
         /// <summary>
         /// The URL you must redirect your customer to in order to authenticate.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupIntents/SetupIntentNextActionVerifyWithMicrodeposits.cs b/src/Stripe.net/Entities/SetupIntents/SetupIntentNextActionVerifyWithMicrodeposits.cs
index d6554c1a79..7debcea80e 100644
--- a/src/Stripe.net/Entities/SetupIntents/SetupIntentNextActionVerifyWithMicrodeposits.cs
+++ b/src/Stripe.net/Entities/SetupIntents/SetupIntentNextActionVerifyWithMicrodeposits.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentNextActionVerifyWithMicrodeposits : StripeEntity<SetupIntentNextActionVerifyWithMicrodeposits>
     {
@@ -12,6 +15,10 @@ public class SetupIntentNextActionVerifyWithMicrodeposits : StripeEntity<SetupIn
         /// </summary>
         [JsonProperty("arrival_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("arrival_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime ArrivalDate { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -19,6 +26,9 @@ public class SetupIntentNextActionVerifyWithMicrodeposits : StripeEntity<SetupIn
         /// account.
         /// </summary>
         [JsonProperty("hosted_verification_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hosted_verification_url")]
+#endif
         public string HostedVerificationUrl { get; set; }
 
         /// <summary>
@@ -27,6 +37,9 @@ public class SetupIntentNextActionVerifyWithMicrodeposits : StripeEntity<SetupIn
         /// One of: <c>amounts</c>, or <c>descriptor_code</c>.
         /// </summary>
         [JsonProperty("microdeposit_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("microdeposit_type")]
+#endif
         public string MicrodepositType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodConfigurationDetails.cs b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodConfigurationDetails.cs
index b3379637c5..a32979d753 100644
--- a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodConfigurationDetails.cs
+++ b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodConfigurationDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodConfigurationDetails : StripeEntity<SetupIntentPaymentMethodConfigurationDetails>, IHasId
     {
@@ -9,12 +12,18 @@ public class SetupIntentPaymentMethodConfigurationDetails : StripeEntity<SetupIn
         /// ID of the payment method configuration used.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// ID of the parent payment method configuration used.
         /// </summary>
         [JsonProperty("parent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("parent")]
+#endif
         public string Parent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptions.cs b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptions.cs
index 29225e54e0..f64347a85f 100644
--- a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptions.cs
+++ b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptions.cs
@@ -2,34 +2,64 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptions : StripeEntity<SetupIntentPaymentMethodOptions>
     {
         [JsonProperty("acss_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acss_debit")]
+#endif
         public SetupIntentPaymentMethodOptionsAcssDebit AcssDebit { get; set; }
 
         [JsonProperty("amazon_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amazon_pay")]
+#endif
         public SetupIntentPaymentMethodOptionsAmazonPay AmazonPay { get; set; }
 
         [JsonProperty("bacs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bacs_debit")]
+#endif
         public SetupIntentPaymentMethodOptionsBacsDebit BacsDebit { get; set; }
 
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public SetupIntentPaymentMethodOptionsCard Card { get; set; }
 
         [JsonProperty("card_present")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_present")]
+#endif
         public SetupIntentPaymentMethodOptionsCardPresent CardPresent { get; set; }
 
         [JsonProperty("link")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("link")]
+#endif
         public SetupIntentPaymentMethodOptionsLink Link { get; set; }
 
         [JsonProperty("paypal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paypal")]
+#endif
         public SetupIntentPaymentMethodOptionsPaypal Paypal { get; set; }
 
         [JsonProperty("sepa_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_debit")]
+#endif
         public SetupIntentPaymentMethodOptionsSepaDebit SepaDebit { get; set; }
 
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public SetupIntentPaymentMethodOptionsUsBankAccount UsBankAccount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsAcssDebit.cs b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsAcssDebit.cs
index f9b2488ac5..cd6a46ebe0 100644
--- a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsAcssDebit.cs
+++ b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsAcssDebit.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsAcssDebit : StripeEntity<SetupIntentPaymentMethodOptionsAcssDebit>
     {
@@ -10,9 +13,15 @@ public class SetupIntentPaymentMethodOptionsAcssDebit : StripeEntity<SetupIntent
         /// One of: <c>cad</c>, or <c>usd</c>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public SetupIntentPaymentMethodOptionsAcssDebitMandateOptions MandateOptions { get; set; }
 
         /// <summary>
@@ -20,6 +29,9 @@ public class SetupIntentPaymentMethodOptionsAcssDebit : StripeEntity<SetupIntent
         /// One of: <c>automatic</c>, <c>instant</c>, or <c>microdeposits</c>.
         /// </summary>
         [JsonProperty("verification_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification_method")]
+#endif
         public string VerificationMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsAcssDebitMandateOptions.cs b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsAcssDebitMandateOptions.cs
index a054db87f3..9cc471c4cc 100644
--- a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsAcssDebitMandateOptions.cs
+++ b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsAcssDebitMandateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsAcssDebitMandateOptions : StripeEntity<SetupIntentPaymentMethodOptionsAcssDebitMandateOptions>
     {
@@ -10,6 +13,9 @@ public class SetupIntentPaymentMethodOptionsAcssDebitMandateOptions : StripeEnti
         /// A URL for custom mandate text.
         /// </summary>
         [JsonProperty("custom_mandate_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_mandate_url")]
+#endif
         public string CustomMandateUrl { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class SetupIntentPaymentMethodOptionsAcssDebitMandateOptions : StripeEnti
         /// One of: <c>invoice</c>, or <c>subscription</c>.
         /// </summary>
         [JsonProperty("default_for")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_for")]
+#endif
         public List<string> DefaultFor { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class SetupIntentPaymentMethodOptionsAcssDebitMandateOptions : StripeEnti
         /// 'interval' or 'combined'.
         /// </summary>
         [JsonProperty("interval_description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_description")]
+#endif
         public string IntervalDescription { get; set; }
 
         /// <summary>
@@ -31,6 +43,9 @@ public class SetupIntentPaymentMethodOptionsAcssDebitMandateOptions : StripeEnti
         /// One of: <c>combined</c>, <c>interval</c>, or <c>sporadic</c>.
         /// </summary>
         [JsonProperty("payment_schedule")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_schedule")]
+#endif
         public string PaymentSchedule { get; set; }
 
         /// <summary>
@@ -38,6 +53,9 @@ public class SetupIntentPaymentMethodOptionsAcssDebitMandateOptions : StripeEnti
         /// One of: <c>business</c>, or <c>personal</c>.
         /// </summary>
         [JsonProperty("transaction_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_type")]
+#endif
         public string TransactionType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsBacsDebit.cs b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsBacsDebit.cs
index 776d70153f..425f941b7a 100644
--- a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsBacsDebit.cs
+++ b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsBacsDebit.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsBacsDebit : StripeEntity<SetupIntentPaymentMethodOptionsBacsDebit>
     {
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public SetupIntentPaymentMethodOptionsBacsDebitMandateOptions MandateOptions { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsBacsDebitMandateOptions.cs b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsBacsDebitMandateOptions.cs
index 247b95f36a..527f4cb59c 100644
--- a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsBacsDebitMandateOptions.cs
+++ b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsBacsDebitMandateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsBacsDebitMandateOptions : StripeEntity<SetupIntentPaymentMethodOptionsBacsDebitMandateOptions>
     {
@@ -11,6 +14,9 @@ public class SetupIntentPaymentMethodOptionsBacsDebitMandateOptions : StripeEnti
         /// '/', '_', '-', '&amp;', '.'. Cannot begin with 'DDIC' or 'STRIPE'.
         /// </summary>
         [JsonProperty("reference_prefix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference_prefix")]
+#endif
         public string ReferencePrefix { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsCard.cs b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsCard.cs
index a67cccc298..1c298ac3e7 100644
--- a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsCard.cs
+++ b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsCard.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsCard : StripeEntity<SetupIntentPaymentMethodOptionsCard>
     {
@@ -9,6 +12,9 @@ public class SetupIntentPaymentMethodOptionsCard : StripeEntity<SetupIntentPayme
         /// Configuration options for setting up an eMandate for cards issued in India.
         /// </summary>
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public SetupIntentPaymentMethodOptionsCardMandateOptions MandateOptions { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class SetupIntentPaymentMethodOptionsCard : StripeEntity<SetupIntentPayme
         /// <c>mastercard</c>, <c>unionpay</c>, <c>unknown</c>, or <c>visa</c>.
         /// </summary>
         [JsonProperty("network")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network")]
+#endif
         public string Network { get; set; }
 
         /// <summary>
@@ -34,6 +43,9 @@ public class SetupIntentPaymentMethodOptionsCard : StripeEntity<SetupIntentPayme
         /// One of: <c>any</c>, <c>automatic</c>, or <c>challenge</c>.
         /// </summary>
         [JsonProperty("request_three_d_secure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_three_d_secure")]
+#endif
         public string RequestThreeDSecure { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsCardMandateOptions.cs b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsCardMandateOptions.cs
index f626a46284..862102506c 100644
--- a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsCardMandateOptions.cs
+++ b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsCardMandateOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsCardMandateOptions : StripeEntity<SetupIntentPaymentMethodOptionsCardMandateOptions>
     {
@@ -12,6 +15,9 @@ public class SetupIntentPaymentMethodOptionsCardMandateOptions : StripeEntity<Se
         /// Amount to be charged for future payments.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class SetupIntentPaymentMethodOptionsCardMandateOptions : StripeEntity<Se
         /// One of: <c>fixed</c>, or <c>maximum</c>.
         /// </summary>
         [JsonProperty("amount_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_type")]
+#endif
         public string AmountType { get; set; }
 
         /// <summary>
@@ -29,6 +38,9 @@ public class SetupIntentPaymentMethodOptionsCardMandateOptions : StripeEntity<Se
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -36,6 +48,9 @@ public class SetupIntentPaymentMethodOptionsCardMandateOptions : StripeEntity<Se
         /// customer.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -44,6 +59,10 @@ public class SetupIntentPaymentMethodOptionsCardMandateOptions : StripeEntity<Se
         /// </summary>
         [JsonProperty("end_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? EndDate { get; set; }
 
         /// <summary>
@@ -52,6 +71,9 @@ public class SetupIntentPaymentMethodOptionsCardMandateOptions : StripeEntity<Se
         /// One of: <c>day</c>, <c>month</c>, <c>sporadic</c>, <c>week</c>, or <c>year</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
 
         /// <summary>
@@ -61,12 +83,18 @@ public class SetupIntentPaymentMethodOptionsCardMandateOptions : StripeEntity<Se
         /// <c>interval=sporadic</c>.
         /// </summary>
         [JsonProperty("interval_count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_count")]
+#endif
         public long? IntervalCount { get; set; }
 
         /// <summary>
         /// Unique identifier for the mandate or subscription.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
@@ -75,12 +103,19 @@ public class SetupIntentPaymentMethodOptionsCardMandateOptions : StripeEntity<Se
         /// </summary>
         [JsonProperty("start_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("start_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime StartDate { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// Specifies the type of mandates supported. Possible values are <c>india</c>.
         /// </summary>
         [JsonProperty("supported_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("supported_types")]
+#endif
         public List<string> SupportedTypes { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsLink.cs b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsLink.cs
index 0d97af784c..6890517aa0 100644
--- a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsLink.cs
+++ b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsLink.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsLink : StripeEntity<SetupIntentPaymentMethodOptionsLink>
     {
@@ -11,6 +14,9 @@ public class SetupIntentPaymentMethodOptionsLink : StripeEntity<SetupIntentPayme
         /// </summary>
         [Obsolete("This property is deprecated, please refer to the description for details.")]
         [JsonProperty("persistent_token")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("persistent_token")]
+#endif
         public string PersistentToken { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsPaypal.cs b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsPaypal.cs
index 48dcdbf1ae..542dd536cb 100644
--- a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsPaypal.cs
+++ b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsPaypal.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsPaypal : StripeEntity<SetupIntentPaymentMethodOptionsPaypal>
     {
@@ -10,6 +13,9 @@ public class SetupIntentPaymentMethodOptionsPaypal : StripeEntity<SetupIntentPay
         /// represents the mandate between the merchant and the customer.
         /// </summary>
         [JsonProperty("billing_agreement_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_agreement_id")]
+#endif
         public string BillingAgreementId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsSepaDebit.cs b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsSepaDebit.cs
index 2006d61335..db8938868d 100644
--- a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsSepaDebit.cs
+++ b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsSepaDebit.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsSepaDebit : StripeEntity<SetupIntentPaymentMethodOptionsSepaDebit>
     {
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public SetupIntentPaymentMethodOptionsSepaDebitMandateOptions MandateOptions { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsSepaDebitMandateOptions.cs b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsSepaDebitMandateOptions.cs
index 2bff5351f3..ed803728ec 100644
--- a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsSepaDebitMandateOptions.cs
+++ b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsSepaDebitMandateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsSepaDebitMandateOptions : StripeEntity<SetupIntentPaymentMethodOptionsSepaDebitMandateOptions>
     {
@@ -11,6 +14,9 @@ public class SetupIntentPaymentMethodOptionsSepaDebitMandateOptions : StripeEnti
         /// '/', '_', '-', '&amp;', '.'. Cannot begin with 'STRIPE'.
         /// </summary>
         [JsonProperty("reference_prefix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference_prefix")]
+#endif
         public string ReferencePrefix { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccount.cs b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccount.cs
index 72feafd62b..5890f3e6e2 100644
--- a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccount.cs
+++ b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccount.cs
@@ -2,13 +2,22 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsUsBankAccount : StripeEntity<SetupIntentPaymentMethodOptionsUsBankAccount>
     {
         [JsonProperty("financial_connections")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_connections")]
+#endif
         public SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnections FinancialConnections { get; set; }
 
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public SetupIntentPaymentMethodOptionsUsBankAccountMandateOptions MandateOptions { get; set; }
 
         /// <summary>
@@ -16,6 +25,9 @@ public class SetupIntentPaymentMethodOptionsUsBankAccount : StripeEntity<SetupIn
         /// One of: <c>automatic</c>, <c>instant</c>, or <c>microdeposits</c>.
         /// </summary>
         [JsonProperty("verification_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification_method")]
+#endif
         public string VerificationMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnections.cs b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnections.cs
index 963a60435f..403b4c9d72 100644
--- a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnections.cs
+++ b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnections.cs
@@ -3,10 +3,16 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnections : StripeEntity<SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnections>
     {
         [JsonProperty("filters")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("filters")]
+#endif
         public SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters Filters { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnections :
         /// <c>transactions</c>.
         /// </summary>
         [JsonProperty("permissions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("permissions")]
+#endif
         public List<string> Permissions { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnections :
         /// One of: <c>balances</c>, <c>ownership</c>, or <c>transactions</c>.
         /// </summary>
         [JsonProperty("prefetch")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("prefetch")]
+#endif
         public List<string> Prefetch { get; set; }
 
         /// <summary>
@@ -30,6 +42,9 @@ public class SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnections :
         /// user will be redirected to this URL to return to your app.
         /// </summary>
         [JsonProperty("return_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_url")]
+#endif
         public string ReturnUrl { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters.cs b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters.cs
index 3ec6d981ea..3aa5d39c79 100644
--- a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters.cs
+++ b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters : StripeEntity<SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters>
     {
@@ -12,6 +15,9 @@ public class SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsFil
         /// One of: <c>checking</c>, or <c>savings</c>.
         /// </summary>
         [JsonProperty("account_subcategories")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_subcategories")]
+#endif
         public List<string> AccountSubcategories { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountMandateOptions.cs b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountMandateOptions.cs
index d151f9be97..8e2a256b68 100644
--- a/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountMandateOptions.cs
+++ b/src/Stripe.net/Entities/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountMandateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsUsBankAccountMandateOptions : StripeEntity<SetupIntentPaymentMethodOptionsUsBankAccountMandateOptions>
     {
@@ -9,6 +12,9 @@ public class SetupIntentPaymentMethodOptionsUsBankAccountMandateOptions : Stripe
         /// Mandate collection method.
         /// </summary>
         [JsonProperty("collection_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("collection_method")]
+#endif
         public string CollectionMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ShippingRates/ShippingRate.cs b/src/Stripe.net/Entities/ShippingRates/ShippingRate.cs
index 3fe2b8c01d..9c19eca253 100644
--- a/src/Stripe.net/Entities/ShippingRates/ShippingRate.cs
+++ b/src/Stripe.net/Entities/ShippingRates/ShippingRate.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Shipping rates describe the price of shipping presented to your customers and applied to
@@ -12,24 +15,36 @@ namespace Stripe
     /// href="https://stripe.com/docs/payments/during-payment/charge-shipping">Charge for
     /// shipping</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class ShippingRate : StripeEntity<ShippingRate>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Whether the shipping rate can be used for new purchases. Defaults to <c>true</c>.
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool Active { get; set; }
 
         /// <summary>
@@ -37,6 +52,10 @@ public class ShippingRate : StripeEntity<ShippingRate>, IHasId, IHasMetadata, IH
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -44,6 +63,9 @@ public class ShippingRate : StripeEntity<ShippingRate>, IHasId, IHasMetadata, IH
         /// customer. This will appear on CheckoutSessions.
         /// </summary>
         [JsonProperty("delivery_estimate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("delivery_estimate")]
+#endif
         public ShippingRateDeliveryEstimate DeliveryEstimate { get; set; }
 
         /// <summary>
@@ -51,9 +73,15 @@ public class ShippingRate : StripeEntity<ShippingRate>, IHasId, IHasMetadata, IH
         /// on CheckoutSessions.
         /// </summary>
         [JsonProperty("display_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_name")]
+#endif
         public string DisplayName { get; set; }
 
         [JsonProperty("fixed_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amount")]
+#endif
         public ShippingRateFixedAmount FixedAmount { get; set; }
 
         /// <summary>
@@ -61,6 +89,9 @@ public class ShippingRate : StripeEntity<ShippingRate>, IHasId, IHasMetadata, IH
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -69,6 +100,9 @@ public class ShippingRate : StripeEntity<ShippingRate>, IHasId, IHasMetadata, IH
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -77,6 +111,9 @@ public class ShippingRate : StripeEntity<ShippingRate>, IHasId, IHasMetadata, IH
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         #region Expandable TaxCode
@@ -87,6 +124,9 @@ public class ShippingRate : StripeEntity<ShippingRate>, IHasId, IHasMetadata, IH
         /// code is <c>txcd_92010001</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string TaxCodeId
         {
             get => this.InternalTaxCode?.Id;
@@ -101,6 +141,9 @@ public string TaxCodeId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public TaxCode TaxCode
         {
             get => this.InternalTaxCode?.ExpandedObject;
@@ -109,6 +152,10 @@ public TaxCode TaxCode
 
         [JsonProperty("tax_code")]
         [JsonConverter(typeof(ExpandableFieldConverter<TaxCode>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_code")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<TaxCode>))]
+#endif
         internal ExpandableField<TaxCode> InternalTaxCode { get; set; }
         #endregion
 
@@ -116,6 +163,9 @@ public TaxCode TaxCode
         /// The type of calculation to use on the shipping rate.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ShippingRates/ShippingRateDeliveryEstimate.cs b/src/Stripe.net/Entities/ShippingRates/ShippingRateDeliveryEstimate.cs
index 4dc72adecd..10c5dc5180 100644
--- a/src/Stripe.net/Entities/ShippingRates/ShippingRateDeliveryEstimate.cs
+++ b/src/Stripe.net/Entities/ShippingRates/ShippingRateDeliveryEstimate.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ShippingRateDeliveryEstimate : StripeEntity<ShippingRateDeliveryEstimate>
     {
@@ -10,12 +13,18 @@ public class ShippingRateDeliveryEstimate : StripeEntity<ShippingRateDeliveryEst
         /// infinite.
         /// </summary>
         [JsonProperty("maximum")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("maximum")]
+#endif
         public ShippingRateDeliveryEstimateMaximum Maximum { get; set; }
 
         /// <summary>
         /// The lower bound of the estimated range. If empty, represents no lower bound.
         /// </summary>
         [JsonProperty("minimum")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("minimum")]
+#endif
         public ShippingRateDeliveryEstimateMinimum Minimum { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ShippingRates/ShippingRateDeliveryEstimateMaximum.cs b/src/Stripe.net/Entities/ShippingRates/ShippingRateDeliveryEstimateMaximum.cs
index 53e02ad545..79a2e3e6bb 100644
--- a/src/Stripe.net/Entities/ShippingRates/ShippingRateDeliveryEstimateMaximum.cs
+++ b/src/Stripe.net/Entities/ShippingRates/ShippingRateDeliveryEstimateMaximum.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ShippingRateDeliveryEstimateMaximum : StripeEntity<ShippingRateDeliveryEstimateMaximum>
     {
@@ -10,12 +13,18 @@ public class ShippingRateDeliveryEstimateMaximum : StripeEntity<ShippingRateDeli
         /// One of: <c>business_day</c>, <c>day</c>, <c>hour</c>, <c>month</c>, or <c>week</c>.
         /// </summary>
         [JsonProperty("unit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit")]
+#endif
         public string Unit { get; set; }
 
         /// <summary>
         /// Must be greater than 0.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public long Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ShippingRates/ShippingRateDeliveryEstimateMinimum.cs b/src/Stripe.net/Entities/ShippingRates/ShippingRateDeliveryEstimateMinimum.cs
index f629619814..7829baf0ba 100644
--- a/src/Stripe.net/Entities/ShippingRates/ShippingRateDeliveryEstimateMinimum.cs
+++ b/src/Stripe.net/Entities/ShippingRates/ShippingRateDeliveryEstimateMinimum.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ShippingRateDeliveryEstimateMinimum : StripeEntity<ShippingRateDeliveryEstimateMinimum>
     {
@@ -10,12 +13,18 @@ public class ShippingRateDeliveryEstimateMinimum : StripeEntity<ShippingRateDeli
         /// One of: <c>business_day</c>, <c>day</c>, <c>hour</c>, <c>month</c>, or <c>week</c>.
         /// </summary>
         [JsonProperty("unit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit")]
+#endif
         public string Unit { get; set; }
 
         /// <summary>
         /// Must be greater than 0.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public long Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ShippingRates/ShippingRateFixedAmount.cs b/src/Stripe.net/Entities/ShippingRates/ShippingRateFixedAmount.cs
index 8ea07f932c..6dbdb690b3 100644
--- a/src/Stripe.net/Entities/ShippingRates/ShippingRateFixedAmount.cs
+++ b/src/Stripe.net/Entities/ShippingRates/ShippingRateFixedAmount.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ShippingRateFixedAmount : StripeEntity<ShippingRateFixedAmount>
     {
@@ -10,6 +13,9 @@ public class ShippingRateFixedAmount : StripeEntity<ShippingRateFixedAmount>
         /// A non-negative integer in cents representing how much to charge.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class ShippingRateFixedAmount : StripeEntity<ShippingRateFixedAmount>
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class ShippingRateFixedAmount : StripeEntity<ShippingRateFixedAmount>
         /// code</a> and a <a href="https://stripe.com/docs/currencies">supported currency</a>.
         /// </summary>
         [JsonProperty("currency_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency_options")]
+#endif
         public Dictionary<string, ShippingRateFixedAmountCurrencyOptions> CurrencyOptions { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/ShippingRates/ShippingRateFixedAmountCurrencyOptions.cs b/src/Stripe.net/Entities/ShippingRates/ShippingRateFixedAmountCurrencyOptions.cs
index 4696f74dd9..7ca29be39f 100644
--- a/src/Stripe.net/Entities/ShippingRates/ShippingRateFixedAmountCurrencyOptions.cs
+++ b/src/Stripe.net/Entities/ShippingRates/ShippingRateFixedAmountCurrencyOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ShippingRateFixedAmountCurrencyOptions : StripeEntity<ShippingRateFixedAmountCurrencyOptions>
     {
@@ -9,6 +12,9 @@ public class ShippingRateFixedAmountCurrencyOptions : StripeEntity<ShippingRateF
         /// A non-negative integer in cents representing how much to charge.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class ShippingRateFixedAmountCurrencyOptions : StripeEntity<ShippingRateF
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Sigma/ScheduledQueryRuns/ScheduledQueryRun.cs b/src/Stripe.net/Entities/Sigma/ScheduledQueryRuns/ScheduledQueryRun.cs
index 7ec11380d1..271946988a 100644
--- a/src/Stripe.net/Entities/Sigma/ScheduledQueryRuns/ScheduledQueryRun.cs
+++ b/src/Stripe.net/Entities/Sigma/ScheduledQueryRuns/ScheduledQueryRun.cs
@@ -4,6 +4,9 @@ namespace Stripe.Sigma
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// If you have <a href="https://stripe.com/docs/sigma/scheduled-queries">scheduled a Sigma
@@ -17,12 +20,18 @@ public class ScheduledQueryRun : StripeEntity<ScheduledQueryRun>, IHasId, IHasOb
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -30,6 +39,10 @@ public class ScheduledQueryRun : StripeEntity<ScheduledQueryRun>, IHasId, IHasOb
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -37,15 +50,25 @@ public class ScheduledQueryRun : StripeEntity<ScheduledQueryRun>, IHasId, IHasOb
         /// </summary>
         [JsonProperty("data_load_time")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("data_load_time")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime DataLoadTime { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         [JsonProperty("error")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("error")]
+#endif
         public ScheduledQueryRunError Error { get; set; }
 
         /// <summary>
         /// The file object representing the results of the query.
         /// </summary>
         [JsonProperty("file")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("file")]
+#endif
         public File File { get; set; }
 
         /// <summary>
@@ -53,6 +76,9 @@ public class ScheduledQueryRun : StripeEntity<ScheduledQueryRun>, IHasId, IHasOb
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -60,12 +86,19 @@ public class ScheduledQueryRun : StripeEntity<ScheduledQueryRun>, IHasId, IHasOb
         /// </summary>
         [JsonProperty("result_available_until")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("result_available_until")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime ResultAvailableUntil { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// SQL for the query.
         /// </summary>
         [JsonProperty("sql")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sql")]
+#endif
         public string Sql { get; set; }
 
         /// <summary>
@@ -73,12 +106,18 @@ public class ScheduledQueryRun : StripeEntity<ScheduledQueryRun>, IHasId, IHasOb
         /// <c>canceled</c>, <c>failed</c>, or <c>timed_out</c> otherwise.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
         /// Title of the query.
         /// </summary>
         [JsonProperty("title")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("title")]
+#endif
         public string Title { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Sigma/ScheduledQueryRuns/ScheduledQueryRunError.cs b/src/Stripe.net/Entities/Sigma/ScheduledQueryRuns/ScheduledQueryRunError.cs
index f050348a02..fc6eeb3157 100644
--- a/src/Stripe.net/Entities/Sigma/ScheduledQueryRuns/ScheduledQueryRunError.cs
+++ b/src/Stripe.net/Entities/Sigma/ScheduledQueryRuns/ScheduledQueryRunError.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Sigma
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ScheduledQueryRunError : StripeEntity<ScheduledQueryRunError>
     {
@@ -9,6 +12,9 @@ public class ScheduledQueryRunError : StripeEntity<ScheduledQueryRunError>
         /// Information about the run failure.
         /// </summary>
         [JsonProperty("message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("message")]
+#endif
         public string Message { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SourceMandateNotifications/SourceMandateNotification.cs b/src/Stripe.net/Entities/SourceMandateNotifications/SourceMandateNotification.cs
index b32ac55166..8e6a979e30 100644
--- a/src/Stripe.net/Entities/SourceMandateNotifications/SourceMandateNotification.cs
+++ b/src/Stripe.net/Entities/SourceMandateNotifications/SourceMandateNotification.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Source mandate notifications should be created when a notification related to a source
@@ -16,15 +19,24 @@ public class SourceMandateNotification : StripeEntity<SourceMandateNotification>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         [JsonProperty("acss_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acss_debit")]
+#endif
         public SourceMandateNotificationAcssDebit AcssDebit { get; set; }
 
         /// <summary>
@@ -34,9 +46,15 @@ public class SourceMandateNotification : StripeEntity<SourceMandateNotification>
         /// source. Required if the notification type is <c>debit_initiated</c>.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         [JsonProperty("bacs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bacs_debit")]
+#endif
         public SourceMandateNotificationBacsDebit BacsDebit { get; set; }
 
         /// <summary>
@@ -44,6 +62,10 @@ public class SourceMandateNotification : StripeEntity<SourceMandateNotification>
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -51,6 +73,9 @@ public class SourceMandateNotification : StripeEntity<SourceMandateNotification>
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -58,9 +83,15 @@ public class SourceMandateNotification : StripeEntity<SourceMandateNotification>
         /// <c>debit_initiated</c>.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
 
         [JsonProperty("sepa_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_debit")]
+#endif
         public SourceMandateNotificationSepaDebit SepaDebit { get; set; }
 
         /// <summary>
@@ -78,6 +109,9 @@ public class SourceMandateNotification : StripeEntity<SourceMandateNotification>
         /// href="https://stripe.com/docs/sources/customers">Sources &amp; Customers</a>.
         /// </summary>
         [JsonProperty("source")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source")]
+#endif
         public Source Source { get; set; }
 
         /// <summary>
@@ -85,6 +119,9 @@ public class SourceMandateNotification : StripeEntity<SourceMandateNotification>
         /// <c>submitted</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -92,6 +129,9 @@ public class SourceMandateNotification : StripeEntity<SourceMandateNotification>
         /// identifier code for the payment method, such as <c>three_d_secure</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SourceMandateNotifications/SourceMandateNotificationAcssDebit.cs b/src/Stripe.net/Entities/SourceMandateNotifications/SourceMandateNotificationAcssDebit.cs
index e72f19ab70..cfdcecc8e2 100644
--- a/src/Stripe.net/Entities/SourceMandateNotifications/SourceMandateNotificationAcssDebit.cs
+++ b/src/Stripe.net/Entities/SourceMandateNotifications/SourceMandateNotificationAcssDebit.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceMandateNotificationAcssDebit : StripeEntity<SourceMandateNotificationAcssDebit>
     {
@@ -9,6 +12,9 @@ public class SourceMandateNotificationAcssDebit : StripeEntity<SourceMandateNoti
         /// The statement descriptor associate with the debit.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SourceMandateNotifications/SourceMandateNotificationBacsDebit.cs b/src/Stripe.net/Entities/SourceMandateNotifications/SourceMandateNotificationBacsDebit.cs
index 9e8fe46153..91a4c5a63b 100644
--- a/src/Stripe.net/Entities/SourceMandateNotifications/SourceMandateNotificationBacsDebit.cs
+++ b/src/Stripe.net/Entities/SourceMandateNotifications/SourceMandateNotificationBacsDebit.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceMandateNotificationBacsDebit : StripeEntity<SourceMandateNotificationBacsDebit>
     {
@@ -9,6 +12,9 @@ public class SourceMandateNotificationBacsDebit : StripeEntity<SourceMandateNoti
         /// Last 4 digits of the account number associated with the debit.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SourceMandateNotifications/SourceMandateNotificationSepaDebit.cs b/src/Stripe.net/Entities/SourceMandateNotifications/SourceMandateNotificationSepaDebit.cs
index ec2fbc14b7..d84c89bc84 100644
--- a/src/Stripe.net/Entities/SourceMandateNotifications/SourceMandateNotificationSepaDebit.cs
+++ b/src/Stripe.net/Entities/SourceMandateNotifications/SourceMandateNotificationSepaDebit.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceMandateNotificationSepaDebit : StripeEntity<SourceMandateNotificationSepaDebit>
     {
@@ -9,18 +12,27 @@ public class SourceMandateNotificationSepaDebit : StripeEntity<SourceMandateNoti
         /// SEPA creditor ID.
         /// </summary>
         [JsonProperty("creditor_identifier")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("creditor_identifier")]
+#endif
         public string CreditorIdentifier { get; set; }
 
         /// <summary>
         /// Last 4 digits of the account number associated with the debit.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
         /// Mandate reference associated with the debit.
         /// </summary>
         [JsonProperty("mandate_reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_reference")]
+#endif
         public string MandateReference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SourceTransactions/SourceTransaction.cs b/src/Stripe.net/Entities/SourceTransactions/SourceTransaction.cs
index 8bc39c2fec..967ba2c173 100644
--- a/src/Stripe.net/Entities/SourceTransactions/SourceTransaction.cs
+++ b/src/Stripe.net/Entities/SourceTransactions/SourceTransaction.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Some payment methods have no required amount that a customer must send. Customers can be
@@ -16,15 +19,24 @@ public class SourceTransaction : StripeEntity<SourceTransaction>, IHasId, IHasOb
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         [JsonProperty("ach_credit_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ach_credit_transfer")]
+#endif
         public SourceTransactionAchCreditTransfer AchCreditTransfer { get; set; }
 
         /// <summary>
@@ -33,9 +45,15 @@ public class SourceTransaction : StripeEntity<SourceTransaction>, IHasId, IHasOb
         /// has pushed to the receiver.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         [JsonProperty("chf_credit_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("chf_credit_transfer")]
+#endif
         public SourceTransactionChfCreditTransfer ChfCreditTransfer { get; set; }
 
         /// <summary>
@@ -43,6 +61,10 @@ public class SourceTransaction : StripeEntity<SourceTransaction>, IHasId, IHasOb
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -51,9 +73,15 @@ public class SourceTransaction : StripeEntity<SourceTransaction>, IHasId, IHasOb
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         [JsonProperty("gbp_credit_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gbp_credit_transfer")]
+#endif
         public SourceTransactionGbpCreditTransfer GbpCreditTransfer { get; set; }
 
         /// <summary>
@@ -61,18 +89,30 @@ public class SourceTransaction : StripeEntity<SourceTransaction>, IHasId, IHasOb
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         [JsonProperty("paper_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paper_check")]
+#endif
         public SourceTransactionPaperCheck PaperCheck { get; set; }
 
         [JsonProperty("sepa_credit_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_credit_transfer")]
+#endif
         public SourceTransactionSepaCreditTransfer SepaCreditTransfer { get; set; }
 
         /// <summary>
         /// The ID of the source this transaction is attached to.
         /// </summary>
         [JsonProperty("source")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source")]
+#endif
         public string Source { get; set; }
 
         /// <summary>
@@ -80,6 +120,9 @@ public class SourceTransaction : StripeEntity<SourceTransaction>, IHasId, IHasOb
         /// <c>failed</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -90,6 +133,9 @@ public class SourceTransaction : StripeEntity<SourceTransaction>, IHasId, IHasOb
         /// <c>three_d_secure</c>, or <c>wechat</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SourceTransactions/SourceTransactionAchCreditTransfer.cs b/src/Stripe.net/Entities/SourceTransactions/SourceTransactionAchCreditTransfer.cs
index a629a21d9f..255599380d 100644
--- a/src/Stripe.net/Entities/SourceTransactions/SourceTransactionAchCreditTransfer.cs
+++ b/src/Stripe.net/Entities/SourceTransactions/SourceTransactionAchCreditTransfer.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceTransactionAchCreditTransfer : StripeEntity<SourceTransactionAchCreditTransfer>
     {
@@ -9,24 +12,36 @@ public class SourceTransactionAchCreditTransfer : StripeEntity<SourceTransaction
         /// Customer data associated with the transfer.
         /// </summary>
         [JsonProperty("customer_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_data")]
+#endif
         public string CustomerData { get; set; }
 
         /// <summary>
         /// Bank account fingerprint associated with the transfer.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
         /// Last 4 digits of the account number associated with the transfer.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
         /// Routing number associated with the transfer.
         /// </summary>
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SourceTransactions/SourceTransactionChfCreditTransfer.cs b/src/Stripe.net/Entities/SourceTransactions/SourceTransactionChfCreditTransfer.cs
index 75dd2884ae..aa9aac718d 100644
--- a/src/Stripe.net/Entities/SourceTransactions/SourceTransactionChfCreditTransfer.cs
+++ b/src/Stripe.net/Entities/SourceTransactions/SourceTransactionChfCreditTransfer.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceTransactionChfCreditTransfer : StripeEntity<SourceTransactionChfCreditTransfer>
     {
@@ -9,30 +12,45 @@ public class SourceTransactionChfCreditTransfer : StripeEntity<SourceTransaction
         /// Reference associated with the transfer.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
         /// Sender's country address.
         /// </summary>
         [JsonProperty("sender_address_country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sender_address_country")]
+#endif
         public string SenderAddressCountry { get; set; }
 
         /// <summary>
         /// Sender's line 1 address.
         /// </summary>
         [JsonProperty("sender_address_line1")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sender_address_line1")]
+#endif
         public string SenderAddressLine1 { get; set; }
 
         /// <summary>
         /// Sender's bank account IBAN.
         /// </summary>
         [JsonProperty("sender_iban")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sender_iban")]
+#endif
         public string SenderIban { get; set; }
 
         /// <summary>
         /// Sender's name.
         /// </summary>
         [JsonProperty("sender_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sender_name")]
+#endif
         public string SenderName { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SourceTransactions/SourceTransactionGbpCreditTransfer.cs b/src/Stripe.net/Entities/SourceTransactions/SourceTransactionGbpCreditTransfer.cs
index e28a92adf0..278a5c0a2f 100644
--- a/src/Stripe.net/Entities/SourceTransactions/SourceTransactionGbpCreditTransfer.cs
+++ b/src/Stripe.net/Entities/SourceTransactions/SourceTransactionGbpCreditTransfer.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceTransactionGbpCreditTransfer : StripeEntity<SourceTransactionGbpCreditTransfer>
     {
@@ -10,6 +13,9 @@ public class SourceTransactionGbpCreditTransfer : StripeEntity<SourceTransaction
         /// transfer.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
@@ -18,36 +24,54 @@ public class SourceTransactionGbpCreditTransfer : StripeEntity<SourceTransaction
         /// supported.
         /// </summary>
         [JsonProperty("funding_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding_method")]
+#endif
         public string FundingMethod { get; set; }
 
         /// <summary>
         /// Last 4 digits of sender account number associated with the transfer.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
         /// Sender entered arbitrary information about the transfer.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
         /// Sender account number associated with the transfer.
         /// </summary>
         [JsonProperty("sender_account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sender_account_number")]
+#endif
         public string SenderAccountNumber { get; set; }
 
         /// <summary>
         /// Sender name associated with the transfer.
         /// </summary>
         [JsonProperty("sender_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sender_name")]
+#endif
         public string SenderName { get; set; }
 
         /// <summary>
         /// Sender sort code associated with the transfer.
         /// </summary>
         [JsonProperty("sender_sort_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sender_sort_code")]
+#endif
         public string SenderSortCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SourceTransactions/SourceTransactionPaperCheck.cs b/src/Stripe.net/Entities/SourceTransactions/SourceTransactionPaperCheck.cs
index 5b86fb01e6..d3878dd6b7 100644
--- a/src/Stripe.net/Entities/SourceTransactions/SourceTransactionPaperCheck.cs
+++ b/src/Stripe.net/Entities/SourceTransactions/SourceTransactionPaperCheck.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceTransactionPaperCheck : StripeEntity<SourceTransactionPaperCheck>
     {
@@ -10,12 +13,18 @@ public class SourceTransactionPaperCheck : StripeEntity<SourceTransactionPaperCh
         /// the Unix epoch.
         /// </summary>
         [JsonProperty("available_at")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("available_at")]
+#endif
         public string AvailableAt { get; set; }
 
         /// <summary>
         /// Comma-separated list of invoice IDs associated with the paper check.
         /// </summary>
         [JsonProperty("invoices")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoices")]
+#endif
         public string Invoices { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SourceTransactions/SourceTransactionSepaCreditTransfer.cs b/src/Stripe.net/Entities/SourceTransactions/SourceTransactionSepaCreditTransfer.cs
index 90411f075c..82e288cd6a 100644
--- a/src/Stripe.net/Entities/SourceTransactions/SourceTransactionSepaCreditTransfer.cs
+++ b/src/Stripe.net/Entities/SourceTransactions/SourceTransactionSepaCreditTransfer.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceTransactionSepaCreditTransfer : StripeEntity<SourceTransactionSepaCreditTransfer>
     {
@@ -9,18 +12,27 @@ public class SourceTransactionSepaCreditTransfer : StripeEntity<SourceTransactio
         /// Reference associated with the transfer.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
         /// Sender's bank account IBAN.
         /// </summary>
         [JsonProperty("sender_iban")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sender_iban")]
+#endif
         public string SenderIban { get; set; }
 
         /// <summary>
         /// Sender's name.
         /// </summary>
         [JsonProperty("sender_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sender_name")]
+#endif
         public string SenderName { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Sources/Source.cs b/src/Stripe.net/Entities/Sources/Source.cs
index 4c958954e4..6eedad5871 100644
--- a/src/Stripe.net/Entities/Sources/Source.cs
+++ b/src/Stripe.net/Entities/Sources/Source.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// <c>Source</c> objects allow you to accept a variety of payment methods. They represent a
@@ -26,24 +29,42 @@ public class Source : StripeEntity<Source>, IHasId, IHasMetadata, IHasObject, IP
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         [JsonProperty("ach_credit_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ach_credit_transfer")]
+#endif
         public SourceAchCreditTransfer AchCreditTransfer { get; set; }
 
         [JsonProperty("ach_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ach_debit")]
+#endif
         public SourceAchDebit AchDebit { get; set; }
 
         [JsonProperty("acss_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acss_debit")]
+#endif
         public SourceAcssDebit AcssDebit { get; set; }
 
         [JsonProperty("alipay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alipay")]
+#endif
         public SourceAlipay Alipay { get; set; }
 
         /// <summary>
@@ -54,6 +75,9 @@ public class Source : StripeEntity<Source>, IHasId, IHasMetadata, IHasObject, IP
         /// One of: <c>always</c>, <c>limited</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("allow_redisplay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allow_redisplay")]
+#endif
         public string AllowRedisplay { get; set; }
 
         /// <summary>
@@ -63,27 +87,48 @@ public class Source : StripeEntity<Source>, IHasId, IHasMetadata, IHasObject, IP
         /// Required for <c>single_use</c> sources.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         [JsonProperty("au_becs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("au_becs_debit")]
+#endif
         public SourceAuBecsDebit AuBecsDebit { get; set; }
 
         [JsonProperty("bancontact")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bancontact")]
+#endif
         public SourceBancontact Bancontact { get; set; }
 
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public SourceCard Card { get; set; }
 
         [JsonProperty("card_present")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_present")]
+#endif
         public SourceCardPresent CardPresent { get; set; }
 
         /// <summary>
         /// The client secret of the source. Used for client-side retrieval using a publishable key.
         /// </summary>
         [JsonProperty("client_secret")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("client_secret")]
+#endif
         public string ClientSecret { get; set; }
 
         [JsonProperty("code_verification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code_verification")]
+#endif
         public SourceCodeVerification CodeVerification { get; set; }
 
         /// <summary>
@@ -91,6 +136,10 @@ public class Source : StripeEntity<Source>, IHasId, IHasMetadata, IHasObject, IP
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -99,6 +148,9 @@ public class Source : StripeEntity<Source>, IHasId, IHasMetadata, IHasObject, IP
         /// once ready. Required for <c>single_use</c> sources.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -106,9 +158,15 @@ public class Source : StripeEntity<Source>, IHasId, IHasMetadata, IHasObject, IP
         /// the source has not been attached to a customer.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         [JsonProperty("eps")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eps")]
+#endif
         public SourceEps Eps { get; set; }
 
         /// <summary>
@@ -116,15 +174,27 @@ public class Source : StripeEntity<Source>, IHasId, IHasMetadata, IHasObject, IP
         /// <c>receiver</c>, <c>code_verification</c>, <c>none</c>.
         /// </summary>
         [JsonProperty("flow")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flow")]
+#endif
         public string Flow { get; set; }
 
         [JsonProperty("giropay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("giropay")]
+#endif
         public SourceGiropay Giropay { get; set; }
 
         [JsonProperty("ideal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ideal")]
+#endif
         public SourceIdeal Ideal { get; set; }
 
         [JsonProperty("klarna")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("klarna")]
+#endif
         public SourceKlarna Klarna { get; set; }
 
         /// <summary>
@@ -132,6 +202,9 @@ public class Source : StripeEntity<Source>, IHasId, IHasMetadata, IHasObject, IP
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -140,9 +213,15 @@ public class Source : StripeEntity<Source>, IHasId, IHasMetadata, IHasObject, IP
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         [JsonProperty("multibanco")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("multibanco")]
+#endif
         public SourceMultibanco Multibanco { get; set; }
 
         /// <summary>
@@ -150,27 +229,51 @@ public class Source : StripeEntity<Source>, IHasId, IHasMetadata, IHasObject, IP
         /// particular source types.
         /// </summary>
         [JsonProperty("owner")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("owner")]
+#endif
         public SourceOwner Owner { get; set; }
 
         [JsonProperty("p24")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("p24")]
+#endif
         public SourceP24 P24 { get; set; }
 
         [JsonProperty("receiver")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("receiver")]
+#endif
         public SourceReceiver Receiver { get; set; }
 
         [JsonProperty("redirect")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("redirect")]
+#endif
         public SourceRedirect Redirect { get; set; }
 
         [JsonProperty("sepa_credit_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_credit_transfer")]
+#endif
         public SourceSepaCreditTransfer SepaCreditTransfer { get; set; }
 
         [JsonProperty("sepa_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_debit")]
+#endif
         public SourceSepaDebit SepaDebit { get; set; }
 
         [JsonProperty("sofort")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sofort")]
+#endif
         public SourceSofort Sofort { get; set; }
 
         [JsonProperty("source_order")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source_order")]
+#endif
         public SourceSourceOrder SourceOrder { get; set; }
 
         /// <summary>
@@ -178,6 +281,9 @@ public class Source : StripeEntity<Source>, IHasId, IHasMetadata, IHasObject, IP
         /// time you charge the source.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
 
         /// <summary>
@@ -186,9 +292,15 @@ public class Source : StripeEntity<Source>, IHasId, IHasMetadata, IHasObject, IP
         /// charge.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         [JsonProperty("three_d_secure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("three_d_secure")]
+#endif
         public SourceThreeDSecure ThreeDSecure { get; set; }
 
         /// <summary>
@@ -206,6 +318,9 @@ public class Source : StripeEntity<Source>, IHasId, IHasMetadata, IHasObject, IP
         /// <c>wechat</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
@@ -215,9 +330,15 @@ public class Source : StripeEntity<Source>, IHasId, IHasMetadata, IHasObject, IP
         /// returned.
         /// </summary>
         [JsonProperty("usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("usage")]
+#endif
         public string Usage { get; set; }
 
         [JsonProperty("wechat")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wechat")]
+#endif
         public SourceWechat Wechat { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Sources/SourceAchCreditTransfer.cs b/src/Stripe.net/Entities/Sources/SourceAchCreditTransfer.cs
index e7ad400418..b550015b52 100644
--- a/src/Stripe.net/Entities/Sources/SourceAchCreditTransfer.cs
+++ b/src/Stripe.net/Entities/Sources/SourceAchCreditTransfer.cs
@@ -2,31 +2,58 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceAchCreditTransfer : StripeEntity<SourceAchCreditTransfer>
     {
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         [JsonProperty("refund_account_holder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_account_holder_name")]
+#endif
         public string RefundAccountHolderName { get; set; }
 
         [JsonProperty("refund_account_holder_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_account_holder_type")]
+#endif
         public string RefundAccountHolderType { get; set; }
 
         [JsonProperty("refund_routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_routing_number")]
+#endif
         public string RefundRoutingNumber { get; set; }
 
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
 
         [JsonProperty("swift_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("swift_code")]
+#endif
         public string SwiftCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Sources/SourceAchDebit.cs b/src/Stripe.net/Entities/Sources/SourceAchDebit.cs
index 842bad1c4f..8029f363db 100644
--- a/src/Stripe.net/Entities/Sources/SourceAchDebit.cs
+++ b/src/Stripe.net/Entities/Sources/SourceAchDebit.cs
@@ -2,25 +2,46 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceAchDebit : StripeEntity<SourceAchDebit>
     {
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
 
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Sources/SourceAcssDebit.cs b/src/Stripe.net/Entities/Sources/SourceAcssDebit.cs
index 76a6ec6b75..c66b6ac15d 100644
--- a/src/Stripe.net/Entities/Sources/SourceAcssDebit.cs
+++ b/src/Stripe.net/Entities/Sources/SourceAcssDebit.cs
@@ -2,37 +2,70 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceAcssDebit : StripeEntity<SourceAcssDebit>
     {
         [JsonProperty("bank_address_city")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_address_city")]
+#endif
         public string BankAddressCity { get; set; }
 
         [JsonProperty("bank_address_line_1")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_address_line_1")]
+#endif
         public string BankAddressLine1 { get; set; }
 
         [JsonProperty("bank_address_line_2")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_address_line_2")]
+#endif
         public string BankAddressLine2 { get; set; }
 
         [JsonProperty("bank_address_postal_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_address_postal_code")]
+#endif
         public string BankAddressPostalCode { get; set; }
 
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         [JsonProperty("category")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("category")]
+#endif
         public string Category { get; set; }
 
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Sources/SourceAlipay.cs b/src/Stripe.net/Entities/Sources/SourceAlipay.cs
index 9180ba6794..dbe2ec05de 100644
--- a/src/Stripe.net/Entities/Sources/SourceAlipay.cs
+++ b/src/Stripe.net/Entities/Sources/SourceAlipay.cs
@@ -2,16 +2,28 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceAlipay : StripeEntity<SourceAlipay>
     {
         [JsonProperty("data_string")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("data_string")]
+#endif
         public string DataString { get; set; }
 
         [JsonProperty("native_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("native_url")]
+#endif
         public string NativeUrl { get; set; }
 
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Sources/SourceAuBecsDebit.cs b/src/Stripe.net/Entities/Sources/SourceAuBecsDebit.cs
index 841d3186b7..6148cff9ac 100644
--- a/src/Stripe.net/Entities/Sources/SourceAuBecsDebit.cs
+++ b/src/Stripe.net/Entities/Sources/SourceAuBecsDebit.cs
@@ -2,16 +2,28 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceAuBecsDebit : StripeEntity<SourceAuBecsDebit>
     {
         [JsonProperty("bsb_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bsb_number")]
+#endif
         public string BsbNumber { get; set; }
 
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Sources/SourceBancontact.cs b/src/Stripe.net/Entities/Sources/SourceBancontact.cs
index c7196b1d75..9d1fa01774 100644
--- a/src/Stripe.net/Entities/Sources/SourceBancontact.cs
+++ b/src/Stripe.net/Entities/Sources/SourceBancontact.cs
@@ -2,25 +2,46 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceBancontact : StripeEntity<SourceBancontact>
     {
         [JsonProperty("bank_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_code")]
+#endif
         public string BankCode { get; set; }
 
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         [JsonProperty("bic")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bic")]
+#endif
         public string Bic { get; set; }
 
         [JsonProperty("iban_last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iban_last4")]
+#endif
         public string IbanLast4 { get; set; }
 
         [JsonProperty("preferred_language")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_language")]
+#endif
         public string PreferredLanguage { get; set; }
 
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Sources/SourceCard.cs b/src/Stripe.net/Entities/Sources/SourceCard.cs
index fef6d88e02..92fd1ec541 100644
--- a/src/Stripe.net/Entities/Sources/SourceCard.cs
+++ b/src/Stripe.net/Entities/Sources/SourceCard.cs
@@ -2,58 +2,112 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceCard : StripeEntity<SourceCard>
     {
         [JsonProperty("address_line1_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_line1_check")]
+#endif
         public string AddressLine1Check { get; set; }
 
         [JsonProperty("address_zip_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_zip_check")]
+#endif
         public string AddressZipCheck { get; set; }
 
         [JsonProperty("brand")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brand")]
+#endif
         public string Brand { get; set; }
 
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         [JsonProperty("cvc_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cvc_check")]
+#endif
         public string CvcCheck { get; set; }
 
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         [JsonProperty("dynamic_last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dynamic_last4")]
+#endif
         public string DynamicLast4 { get; set; }
 
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public long ExpMonth { get; set; }
 
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public long ExpYear { get; set; }
 
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         [JsonProperty("funding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding")]
+#endif
         public string Funding { get; set; }
 
         [JsonProperty("iin")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iin")]
+#endif
         public string Iin { get; set; }
 
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public string Issuer { get; set; }
 
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         [JsonProperty("three_d_secure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("three_d_secure")]
+#endif
         public string ThreeDSecure { get; set; }
 
         [JsonProperty("tokenization_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tokenization_method")]
+#endif
         public string TokenizationMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Sources/SourceCardPresent.cs b/src/Stripe.net/Entities/Sources/SourceCardPresent.cs
index 4ddadefe12..03f4a6e7d2 100644
--- a/src/Stripe.net/Entities/Sources/SourceCardPresent.cs
+++ b/src/Stripe.net/Entities/Sources/SourceCardPresent.cs
@@ -2,85 +2,166 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceCardPresent : StripeEntity<SourceCardPresent>
     {
         [JsonProperty("application_cryptogram")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_cryptogram")]
+#endif
         public string ApplicationCryptogram { get; set; }
 
         [JsonProperty("application_preferred_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_preferred_name")]
+#endif
         public string ApplicationPreferredName { get; set; }
 
         [JsonProperty("authorization_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("authorization_code")]
+#endif
         public string AuthorizationCode { get; set; }
 
         [JsonProperty("authorization_response_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("authorization_response_code")]
+#endif
         public string AuthorizationResponseCode { get; set; }
 
         [JsonProperty("brand")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brand")]
+#endif
         public string Brand { get; set; }
 
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         [JsonProperty("cvm_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cvm_type")]
+#endif
         public string CvmType { get; set; }
 
         [JsonProperty("data_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("data_type")]
+#endif
         public string DataType { get; set; }
 
         [JsonProperty("dedicated_file_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dedicated_file_name")]
+#endif
         public string DedicatedFileName { get; set; }
 
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         [JsonProperty("emv_auth_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("emv_auth_data")]
+#endif
         public string EmvAuthData { get; set; }
 
         [JsonProperty("evidence_customer_signature")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("evidence_customer_signature")]
+#endif
         public string EvidenceCustomerSignature { get; set; }
 
         [JsonProperty("evidence_transaction_certificate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("evidence_transaction_certificate")]
+#endif
         public string EvidenceTransactionCertificate { get; set; }
 
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public long? ExpMonth { get; set; }
 
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public long? ExpYear { get; set; }
 
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         [JsonProperty("funding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding")]
+#endif
         public string Funding { get; set; }
 
         [JsonProperty("iin")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iin")]
+#endif
         public string Iin { get; set; }
 
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public string Issuer { get; set; }
 
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         [JsonProperty("pos_device_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pos_device_id")]
+#endif
         public string PosDeviceId { get; set; }
 
         [JsonProperty("pos_entry_mode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pos_entry_mode")]
+#endif
         public string PosEntryMode { get; set; }
 
         [JsonProperty("read_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("read_method")]
+#endif
         public string ReadMethod { get; set; }
 
         [JsonProperty("reader")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reader")]
+#endif
         public string Reader { get; set; }
 
         [JsonProperty("terminal_verification_results")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("terminal_verification_results")]
+#endif
         public string TerminalVerificationResults { get; set; }
 
         [JsonProperty("transaction_status_information")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_status_information")]
+#endif
         public string TransactionStatusInformation { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Sources/SourceCodeVerification.cs b/src/Stripe.net/Entities/Sources/SourceCodeVerification.cs
index 2708e3821f..c27cda6855 100644
--- a/src/Stripe.net/Entities/Sources/SourceCodeVerification.cs
+++ b/src/Stripe.net/Entities/Sources/SourceCodeVerification.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceCodeVerification : StripeEntity<SourceCodeVerification>
     {
@@ -10,6 +13,9 @@ public class SourceCodeVerification : StripeEntity<SourceCodeVerification>
         /// code.
         /// </summary>
         [JsonProperty("attempts_remaining")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("attempts_remaining")]
+#endif
         public long AttemptsRemaining { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class SourceCodeVerification : StripeEntity<SourceCodeVerification>
         /// <c>attempts_remaining</c> should be 0).
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Sources/SourceEps.cs b/src/Stripe.net/Entities/Sources/SourceEps.cs
index 9a5207595d..c2b08766e5 100644
--- a/src/Stripe.net/Entities/Sources/SourceEps.cs
+++ b/src/Stripe.net/Entities/Sources/SourceEps.cs
@@ -2,13 +2,22 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceEps : StripeEntity<SourceEps>
     {
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Sources/SourceGiropay.cs b/src/Stripe.net/Entities/Sources/SourceGiropay.cs
index a407d90d49..958a4d9a17 100644
--- a/src/Stripe.net/Entities/Sources/SourceGiropay.cs
+++ b/src/Stripe.net/Entities/Sources/SourceGiropay.cs
@@ -2,19 +2,34 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceGiropay : StripeEntity<SourceGiropay>
     {
         [JsonProperty("bank_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_code")]
+#endif
         public string BankCode { get; set; }
 
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         [JsonProperty("bic")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bic")]
+#endif
         public string Bic { get; set; }
 
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Sources/SourceIdeal.cs b/src/Stripe.net/Entities/Sources/SourceIdeal.cs
index 693d0f2c5e..54d945a7c4 100644
--- a/src/Stripe.net/Entities/Sources/SourceIdeal.cs
+++ b/src/Stripe.net/Entities/Sources/SourceIdeal.cs
@@ -2,19 +2,34 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceIdeal : StripeEntity<SourceIdeal>
     {
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
 
         [JsonProperty("bic")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bic")]
+#endif
         public string Bic { get; set; }
 
         [JsonProperty("iban_last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iban_last4")]
+#endif
         public string IbanLast4 { get; set; }
 
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Sources/SourceKlarna.cs b/src/Stripe.net/Entities/Sources/SourceKlarna.cs
index 650bc9093b..75e0a2327d 100644
--- a/src/Stripe.net/Entities/Sources/SourceKlarna.cs
+++ b/src/Stripe.net/Entities/Sources/SourceKlarna.cs
@@ -2,85 +2,166 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceKlarna : StripeEntity<SourceKlarna>
     {
         [JsonProperty("background_image_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("background_image_url")]
+#endif
         public string BackgroundImageUrl { get; set; }
 
         [JsonProperty("client_token")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("client_token")]
+#endif
         public string ClientToken { get; set; }
 
         [JsonProperty("first_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_name")]
+#endif
         public string FirstName { get; set; }
 
         [JsonProperty("last_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_name")]
+#endif
         public string LastName { get; set; }
 
         [JsonProperty("locale")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("locale")]
+#endif
         public string Locale { get; set; }
 
         [JsonProperty("logo_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("logo_url")]
+#endif
         public string LogoUrl { get; set; }
 
         [JsonProperty("page_title")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("page_title")]
+#endif
         public string PageTitle { get; set; }
 
         [JsonProperty("pay_later_asset_urls_descriptive")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_later_asset_urls_descriptive")]
+#endif
         public string PayLaterAssetUrlsDescriptive { get; set; }
 
         [JsonProperty("pay_later_asset_urls_standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_later_asset_urls_standard")]
+#endif
         public string PayLaterAssetUrlsStandard { get; set; }
 
         [JsonProperty("pay_later_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_later_name")]
+#endif
         public string PayLaterName { get; set; }
 
         [JsonProperty("pay_later_redirect_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_later_redirect_url")]
+#endif
         public string PayLaterRedirectUrl { get; set; }
 
         [JsonProperty("pay_now_asset_urls_descriptive")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_now_asset_urls_descriptive")]
+#endif
         public string PayNowAssetUrlsDescriptive { get; set; }
 
         [JsonProperty("pay_now_asset_urls_standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_now_asset_urls_standard")]
+#endif
         public string PayNowAssetUrlsStandard { get; set; }
 
         [JsonProperty("pay_now_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_now_name")]
+#endif
         public string PayNowName { get; set; }
 
         [JsonProperty("pay_now_redirect_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_now_redirect_url")]
+#endif
         public string PayNowRedirectUrl { get; set; }
 
         [JsonProperty("pay_over_time_asset_urls_descriptive")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_over_time_asset_urls_descriptive")]
+#endif
         public string PayOverTimeAssetUrlsDescriptive { get; set; }
 
         [JsonProperty("pay_over_time_asset_urls_standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_over_time_asset_urls_standard")]
+#endif
         public string PayOverTimeAssetUrlsStandard { get; set; }
 
         [JsonProperty("pay_over_time_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_over_time_name")]
+#endif
         public string PayOverTimeName { get; set; }
 
         [JsonProperty("pay_over_time_redirect_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_over_time_redirect_url")]
+#endif
         public string PayOverTimeRedirectUrl { get; set; }
 
         [JsonProperty("payment_method_categories")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_categories")]
+#endif
         public string PaymentMethodCategories { get; set; }
 
         [JsonProperty("purchase_country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("purchase_country")]
+#endif
         public string PurchaseCountry { get; set; }
 
         [JsonProperty("purchase_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("purchase_type")]
+#endif
         public string PurchaseType { get; set; }
 
         [JsonProperty("redirect_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("redirect_url")]
+#endif
         public string RedirectUrl { get; set; }
 
         [JsonProperty("shipping_delay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_delay")]
+#endif
         public long ShippingDelay { get; set; }
 
         [JsonProperty("shipping_first_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_first_name")]
+#endif
         public string ShippingFirstName { get; set; }
 
         [JsonProperty("shipping_last_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_last_name")]
+#endif
         public string ShippingLastName { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Sources/SourceMultibanco.cs b/src/Stripe.net/Entities/Sources/SourceMultibanco.cs
index 899cfbb2e2..e9df90a8c9 100644
--- a/src/Stripe.net/Entities/Sources/SourceMultibanco.cs
+++ b/src/Stripe.net/Entities/Sources/SourceMultibanco.cs
@@ -2,37 +2,70 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceMultibanco : StripeEntity<SourceMultibanco>
     {
         [JsonProperty("entity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("entity")]
+#endif
         public string Entity { get; set; }
 
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         [JsonProperty("refund_account_holder_address_city")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_account_holder_address_city")]
+#endif
         public string RefundAccountHolderAddressCity { get; set; }
 
         [JsonProperty("refund_account_holder_address_country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_account_holder_address_country")]
+#endif
         public string RefundAccountHolderAddressCountry { get; set; }
 
         [JsonProperty("refund_account_holder_address_line1")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_account_holder_address_line1")]
+#endif
         public string RefundAccountHolderAddressLine1 { get; set; }
 
         [JsonProperty("refund_account_holder_address_line2")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_account_holder_address_line2")]
+#endif
         public string RefundAccountHolderAddressLine2 { get; set; }
 
         [JsonProperty("refund_account_holder_address_postal_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_account_holder_address_postal_code")]
+#endif
         public string RefundAccountHolderAddressPostalCode { get; set; }
 
         [JsonProperty("refund_account_holder_address_state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_account_holder_address_state")]
+#endif
         public string RefundAccountHolderAddressState { get; set; }
 
         [JsonProperty("refund_account_holder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_account_holder_name")]
+#endif
         public string RefundAccountHolderName { get; set; }
 
         [JsonProperty("refund_iban")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_iban")]
+#endif
         public string RefundIban { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Sources/SourceOwner.cs b/src/Stripe.net/Entities/Sources/SourceOwner.cs
index 8ab0904804..ad88a24397 100644
--- a/src/Stripe.net/Entities/Sources/SourceOwner.cs
+++ b/src/Stripe.net/Entities/Sources/SourceOwner.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceOwner : StripeEntity<SourceOwner>
     {
@@ -9,24 +12,36 @@ public class SourceOwner : StripeEntity<SourceOwner>
         /// Owner's address.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public Address Address { get; set; }
 
         /// <summary>
         /// Owner's email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// Owner's full name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// Owner's phone number (including extension).
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
 
         /// <summary>
@@ -35,6 +50,9 @@ public class SourceOwner : StripeEntity<SourceOwner>
         /// set or mutated.
         /// </summary>
         [JsonProperty("verified_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verified_address")]
+#endif
         public Address VerifiedAddress { get; set; }
 
         /// <summary>
@@ -43,6 +61,9 @@ public class SourceOwner : StripeEntity<SourceOwner>
         /// cannot be set or mutated.
         /// </summary>
         [JsonProperty("verified_email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verified_email")]
+#endif
         public string VerifiedEmail { get; set; }
 
         /// <summary>
@@ -51,6 +72,9 @@ public class SourceOwner : StripeEntity<SourceOwner>
         /// cannot be set or mutated.
         /// </summary>
         [JsonProperty("verified_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verified_name")]
+#endif
         public string VerifiedName { get; set; }
 
         /// <summary>
@@ -59,6 +83,9 @@ public class SourceOwner : StripeEntity<SourceOwner>
         /// or settlement. They cannot be set or mutated.
         /// </summary>
         [JsonProperty("verified_phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verified_phone")]
+#endif
         public string VerifiedPhone { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Sources/SourceP24.cs b/src/Stripe.net/Entities/Sources/SourceP24.cs
index 14f10d4979..865a7b63ae 100644
--- a/src/Stripe.net/Entities/Sources/SourceP24.cs
+++ b/src/Stripe.net/Entities/Sources/SourceP24.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceP24 : StripeEntity<SourceP24>
     {
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Sources/SourceReceiver.cs b/src/Stripe.net/Entities/Sources/SourceReceiver.cs
index a61779da83..54edb5fbc3 100644
--- a/src/Stripe.net/Entities/Sources/SourceReceiver.cs
+++ b/src/Stripe.net/Entities/Sources/SourceReceiver.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceReceiver : StripeEntity<SourceReceiver>
     {
@@ -10,6 +13,9 @@ public class SourceReceiver : StripeEntity<SourceReceiver>
         /// customer to send their funds to.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public string Address { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class SourceReceiver : StripeEntity<SourceReceiver>
         /// well. The amount charged is expressed in the source's currency.
         /// </summary>
         [JsonProperty("amount_charged")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_charged")]
+#endif
         public long AmountCharged { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class SourceReceiver : StripeEntity<SourceReceiver>
         /// funds. The amount received is expressed in the source's currency.
         /// </summary>
         [JsonProperty("amount_received")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_received")]
+#endif
         public long AmountReceived { get; set; }
 
         /// <summary>
@@ -34,12 +46,18 @@ public class SourceReceiver : StripeEntity<SourceReceiver>
         /// the source's currency.
         /// </summary>
         [JsonProperty("amount_returned")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_returned")]
+#endif
         public long AmountReturned { get; set; }
 
         /// <summary>
         /// Type of refund attribute method, one of <c>email</c>, <c>manual</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("refund_attributes_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_attributes_method")]
+#endif
         public string RefundAttributesMethod { get; set; }
 
         /// <summary>
@@ -47,6 +65,9 @@ public class SourceReceiver : StripeEntity<SourceReceiver>
         /// <c>available</c>.
         /// </summary>
         [JsonProperty("refund_attributes_status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_attributes_status")]
+#endif
         public string RefundAttributesStatus { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Sources/SourceRedirect.cs b/src/Stripe.net/Entities/Sources/SourceRedirect.cs
index b3be37b307..13216edafb 100644
--- a/src/Stripe.net/Entities/Sources/SourceRedirect.cs
+++ b/src/Stripe.net/Entities/Sources/SourceRedirect.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceRedirect : StripeEntity<SourceRedirect>
     {
@@ -12,12 +15,18 @@ public class SourceRedirect : StripeEntity<SourceRedirect>
         /// technical error). Present only if the redirect status is <c>failed</c>.
         /// </summary>
         [JsonProperty("failure_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("failure_reason")]
+#endif
         public string FailureReason { get; set; }
 
         /// <summary>
         /// The URL you provide to redirect the customer to after they authenticated their payment.
         /// </summary>
         [JsonProperty("return_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_url")]
+#endif
         public string ReturnUrl { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class SourceRedirect : StripeEntity<SourceRedirect>
         /// authentication, cannot be reused).
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -34,6 +46,9 @@ public class SourceRedirect : StripeEntity<SourceRedirect>
         /// authentication flow.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Sources/SourceSepaCreditTransfer.cs b/src/Stripe.net/Entities/Sources/SourceSepaCreditTransfer.cs
index 5eb9fb85bb..3a27c292d8 100644
--- a/src/Stripe.net/Entities/Sources/SourceSepaCreditTransfer.cs
+++ b/src/Stripe.net/Entities/Sources/SourceSepaCreditTransfer.cs
@@ -2,40 +2,76 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceSepaCreditTransfer : StripeEntity<SourceSepaCreditTransfer>
     {
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         [JsonProperty("bic")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bic")]
+#endif
         public string Bic { get; set; }
 
         [JsonProperty("iban")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iban")]
+#endif
         public string Iban { get; set; }
 
         [JsonProperty("refund_account_holder_address_city")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_account_holder_address_city")]
+#endif
         public string RefundAccountHolderAddressCity { get; set; }
 
         [JsonProperty("refund_account_holder_address_country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_account_holder_address_country")]
+#endif
         public string RefundAccountHolderAddressCountry { get; set; }
 
         [JsonProperty("refund_account_holder_address_line1")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_account_holder_address_line1")]
+#endif
         public string RefundAccountHolderAddressLine1 { get; set; }
 
         [JsonProperty("refund_account_holder_address_line2")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_account_holder_address_line2")]
+#endif
         public string RefundAccountHolderAddressLine2 { get; set; }
 
         [JsonProperty("refund_account_holder_address_postal_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_account_holder_address_postal_code")]
+#endif
         public string RefundAccountHolderAddressPostalCode { get; set; }
 
         [JsonProperty("refund_account_holder_address_state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_account_holder_address_state")]
+#endif
         public string RefundAccountHolderAddressState { get; set; }
 
         [JsonProperty("refund_account_holder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_account_holder_name")]
+#endif
         public string RefundAccountHolderName { get; set; }
 
         [JsonProperty("refund_iban")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_iban")]
+#endif
         public string RefundIban { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Sources/SourceSepaDebit.cs b/src/Stripe.net/Entities/Sources/SourceSepaDebit.cs
index ff687ffd98..01b8f8665f 100644
--- a/src/Stripe.net/Entities/Sources/SourceSepaDebit.cs
+++ b/src/Stripe.net/Entities/Sources/SourceSepaDebit.cs
@@ -2,28 +2,52 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceSepaDebit : StripeEntity<SourceSepaDebit>
     {
         [JsonProperty("bank_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_code")]
+#endif
         public string BankCode { get; set; }
 
         [JsonProperty("branch_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("branch_code")]
+#endif
         public string BranchCode { get; set; }
 
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         [JsonProperty("mandate_reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_reference")]
+#endif
         public string MandateReference { get; set; }
 
         [JsonProperty("mandate_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_url")]
+#endif
         public string MandateUrl { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Sources/SourceSofort.cs b/src/Stripe.net/Entities/Sources/SourceSofort.cs
index 94d5c7bdc9..518a07b135 100644
--- a/src/Stripe.net/Entities/Sources/SourceSofort.cs
+++ b/src/Stripe.net/Entities/Sources/SourceSofort.cs
@@ -2,28 +2,52 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceSofort : StripeEntity<SourceSofort>
     {
         [JsonProperty("bank_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_code")]
+#endif
         public string BankCode { get; set; }
 
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         [JsonProperty("bic")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bic")]
+#endif
         public string Bic { get; set; }
 
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         [JsonProperty("iban_last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iban_last4")]
+#endif
         public string IbanLast4 { get; set; }
 
         [JsonProperty("preferred_language")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_language")]
+#endif
         public string PreferredLanguage { get; set; }
 
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Sources/SourceSourceOrder.cs b/src/Stripe.net/Entities/Sources/SourceSourceOrder.cs
index 6f89d63bc7..ebd2c79c35 100644
--- a/src/Stripe.net/Entities/Sources/SourceSourceOrder.cs
+++ b/src/Stripe.net/Entities/Sources/SourceSourceOrder.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceSourceOrder : StripeEntity<SourceSourceOrder>
     {
@@ -12,6 +15,9 @@ public class SourceSourceOrder : StripeEntity<SourceSourceOrder>
         /// order.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -20,21 +26,33 @@ public class SourceSourceOrder : StripeEntity<SourceSourceOrder>
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// The email address of the customer placing the order.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// List of items constituting the order.
         /// </summary>
         [JsonProperty("items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("items")]
+#endif
         public List<SourceSourceOrderItem> Items { get; set; }
 
         [JsonProperty("shipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping")]
+#endif
         public Shipping Shipping { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Sources/SourceSourceOrderItem.cs b/src/Stripe.net/Entities/Sources/SourceSourceOrderItem.cs
index fdc2915579..f515c9b856 100644
--- a/src/Stripe.net/Entities/Sources/SourceSourceOrderItem.cs
+++ b/src/Stripe.net/Entities/Sources/SourceSourceOrderItem.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceSourceOrderItem : StripeEntity<SourceSourceOrderItem>
     {
@@ -9,18 +12,27 @@ public class SourceSourceOrderItem : StripeEntity<SourceSourceOrderItem>
         /// The amount (price) for this order item.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
         /// This currency of this order item. Required when <c>amount</c> is present.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// Human-readable description for this order item.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -28,6 +40,9 @@ public class SourceSourceOrderItem : StripeEntity<SourceSourceOrderItem>
         /// expandable to a SKU).
         /// </summary>
         [JsonProperty("parent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("parent")]
+#endif
         public string Parent { get; set; }
 
         /// <summary>
@@ -35,12 +50,18 @@ public class SourceSourceOrderItem : StripeEntity<SourceSourceOrderItem>
         /// instances of the SKU to be ordered.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long Quantity { get; set; }
 
         /// <summary>
         /// The type of this order item. Must be <c>sku</c>, <c>tax</c>, or <c>shipping</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Sources/SourceThreeDSecure.cs b/src/Stripe.net/Entities/Sources/SourceThreeDSecure.cs
index 20ea8347ca..76111b4a17 100644
--- a/src/Stripe.net/Entities/Sources/SourceThreeDSecure.cs
+++ b/src/Stripe.net/Entities/Sources/SourceThreeDSecure.cs
@@ -2,67 +2,130 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceThreeDSecure : StripeEntity<SourceThreeDSecure>
     {
         [JsonProperty("address_line1_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_line1_check")]
+#endif
         public string AddressLine1Check { get; set; }
 
         [JsonProperty("address_zip_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_zip_check")]
+#endif
         public string AddressZipCheck { get; set; }
 
         [JsonProperty("authenticated")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("authenticated")]
+#endif
         public bool? Authenticated { get; set; }
 
         [JsonProperty("brand")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brand")]
+#endif
         public string Brand { get; set; }
 
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public string Card { get; set; }
 
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         [JsonProperty("cvc_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cvc_check")]
+#endif
         public string CvcCheck { get; set; }
 
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         [JsonProperty("dynamic_last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dynamic_last4")]
+#endif
         public string DynamicLast4 { get; set; }
 
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public long? ExpMonth { get; set; }
 
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public long? ExpYear { get; set; }
 
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         [JsonProperty("funding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding")]
+#endif
         public string Funding { get; set; }
 
         [JsonProperty("iin")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iin")]
+#endif
         public string Iin { get; set; }
 
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public string Issuer { get; set; }
 
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         [JsonProperty("three_d_secure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("three_d_secure")]
+#endif
         public string ThreeDSecure { get; set; }
 
         [JsonProperty("tokenization_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tokenization_method")]
+#endif
         public string TokenizationMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Sources/SourceWechat.cs b/src/Stripe.net/Entities/Sources/SourceWechat.cs
index 406eca115e..4ba29a3811 100644
--- a/src/Stripe.net/Entities/Sources/SourceWechat.cs
+++ b/src/Stripe.net/Entities/Sources/SourceWechat.cs
@@ -2,16 +2,28 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceWechat : StripeEntity<SourceWechat>
     {
         [JsonProperty("prepay_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("prepay_id")]
+#endif
         public string PrepayId { get; set; }
 
         [JsonProperty("qr_code_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("qr_code_url")]
+#endif
         public string QrCodeUrl { get; set; }
 
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/StripeError.cs b/src/Stripe.net/Entities/StripeError.cs
index 4e82a95d4e..b1851dfc45 100644
--- a/src/Stripe.net/Entities/StripeError.cs
+++ b/src/Stripe.net/Entities/StripeError.cs
@@ -1,6 +1,10 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
+
     using Stripe.Infrastructure;
 
     public class StripeError : StripeEntity<StripeError>
@@ -11,6 +15,9 @@ public class StripeError : StripeEntity<StripeError>
 
         /// <summary>For card errors, the ID of the failed charge.</summary>
         [JsonProperty("charge")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("charge")]
+#endif
         public string Charge { get; set; }
 
         /// <summary>
@@ -18,6 +25,9 @@ public class StripeError : StripeEntity<StripeError>
         /// <a href="https://stripe.com/docs/error-codes">error code</a> reported.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
@@ -26,6 +36,9 @@ public class StripeError : StripeEntity<StripeError>
         /// decline</a>.
         /// </summary>
         [JsonProperty("decline_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("decline_code")]
+#endif
         public string DeclineCode { get; set; }
 
         /// <summary>
@@ -33,6 +46,9 @@ public class StripeError : StripeEntity<StripeError>
         /// code</a> reported.
         /// </summary>
         [JsonProperty("doc_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("doc_url")]
+#endif
         public string DocUrl { get; set; }
 
         /// <summary>
@@ -40,6 +56,9 @@ public class StripeError : StripeEntity<StripeError>
         /// messages can be shown to your users.
         /// </summary>
         [JsonProperty("message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("message")]
+#endif
         public string Message { get; set; }
 
         /// <summary>
@@ -47,6 +66,9 @@ public class StripeError : StripeEntity<StripeError>
         /// you can use this to display a message near the correct form field.
         /// </summary>
         [JsonProperty("param")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("param")]
+#endif
         public string Param { get; set; }
 
         /// <summary>
@@ -54,6 +76,9 @@ public class StripeError : StripeEntity<StripeError>
         /// involving a <see cref="Stripe.PaymentIntent"/>.
         /// </summary>
         [JsonProperty("payment_intent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_intent")]
+#endif
         public PaymentIntent PaymentIntent { get; set; }
 
         /// <summary>
@@ -61,6 +86,9 @@ public class StripeError : StripeEntity<StripeError>
         /// involving a <see cref="Stripe.PaymentMethod"/>.
         /// </summary>
         [JsonProperty("payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method")]
+#endif
         public PaymentMethod PaymentMethod { get; set; }
 
         /// <summary>
@@ -68,12 +96,18 @@ public class StripeError : StripeEntity<StripeError>
         /// a problem. This field is only populated for invoice-related errors.
         /// </summary>
         [JsonProperty("payment_method_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_type")]
+#endif
         public string PaymentMethodType { get; set; }
 
         /// <summary>
         /// A URL to the request log entry in your dashboard.
         /// </summary>
         [JsonProperty("request_log_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_log_url")]
+#endif
         public string RequestLogUrl { get; set; }
 
         /// <summary>
@@ -81,6 +115,9 @@ public class StripeError : StripeEntity<StripeError>
         /// involving a <see cref="Stripe.SetupIntent"/>.
         /// </summary>
         [JsonProperty("setup_intent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_intent")]
+#endif
         public SetupIntent SetupIntent { get; set; }
 
         /// <summary>
@@ -88,6 +125,9 @@ public class StripeError : StripeEntity<StripeError>
         /// </summary>
         [JsonProperty("source")]
         [JsonConverter(typeof(StripeObjectConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source")]
+#endif
         public IPaymentSource Source { get; set; }
 
         /// <summary>
@@ -95,6 +135,9 @@ public class StripeError : StripeEntity<StripeError>
         /// <c>idempotency_error</c>, or <c>invalid_request_error</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /*
@@ -102,9 +145,15 @@ public class StripeError : StripeEntity<StripeError>
          */
 
         [JsonProperty("error")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("error")]
+#endif
         public string Error { get; set; }
 
         [JsonProperty("error_description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("error_description")]
+#endif
         public string ErrorDescription { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/StripeList.cs b/src/Stripe.net/Entities/StripeList.cs
index 9ebc6f77c6..8839942022 100644
--- a/src/Stripe.net/Entities/StripeList.cs
+++ b/src/Stripe.net/Entities/StripeList.cs
@@ -4,20 +4,32 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     [JsonObject]
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJEnumerableObjectConverter))]
+#endif
     public class StripeList<T> : StripeEntity<StripeList<T>>, IHasObject, IEnumerable<T>
     {
         /// <summary>
         /// A string describing the object type returned.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// A list containing the actual response elements, paginated by any request parameters.
         /// </summary>
         [JsonProperty("data", ItemConverterType = typeof(StripeObjectConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("data")] // STJ determines the conversion from annotations on the inner type
+#endif
         public List<T> Data { get; set; }
 
         /// <summary>
@@ -25,12 +37,18 @@ public class StripeList<T> : StripeEntity<StripeList<T>>, IHasObject, IEnumerabl
         /// this set comprises the end of the list.
         /// </summary>
         [JsonProperty("has_more")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("has_more")]
+#endif
         public bool HasMore { get; set; }
 
         /// <summary>
         /// The URL for accessing this list.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
 
         public IEnumerator<T> GetEnumerator()
diff --git a/src/Stripe.net/Entities/StripeSearchResult.cs b/src/Stripe.net/Entities/StripeSearchResult.cs
index 62288ec6d7..65325ae5bb 100644
--- a/src/Stripe.net/Entities/StripeSearchResult.cs
+++ b/src/Stripe.net/Entities/StripeSearchResult.cs
@@ -3,21 +3,34 @@ namespace Stripe
     using System.Collections;
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
+
     using Stripe.Infrastructure;
 
     [JsonObject]
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJEnumerableObjectConverter))]
+#endif
     public class StripeSearchResult<T> : StripeEntity<StripeSearchResult<T>>, IHasObject, IEnumerable<T>
     {
         /// <summary>
         /// A string describing the object type returned.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// A list containing the actual response elements, paginated by any request parameters.
         /// </summary>
         [JsonProperty("data", ItemConverterType = typeof(StripeObjectConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("data")] // STJ determines the conversion from annotations on the inner type
+#endif
         public List<T> Data { get; set; }
 
         /// <summary>
@@ -25,18 +38,27 @@ public class StripeSearchResult<T> : StripeEntity<StripeSearchResult<T>>, IHasOb
         /// this set comprises the end of the list.
         /// </summary>
         [JsonProperty("has_more")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("has_more")]
+#endif
         public bool HasMore { get; set; }
 
         /// <summary>
         /// The URL for accessing this list.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
 
         /// <summary>
         /// The URL for accessing the next page in search results.
         /// </summary>
         [JsonProperty("next_page")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("next_page")]
+#endif
         public string NextPage { get; set; }
 
         /// <summary>
@@ -44,6 +66,9 @@ public class StripeSearchResult<T> : StripeEntity<StripeSearchResult<T>>, IHasOb
         /// Only available when <see cref="BaseOptions.Expand"/> contains <c>"total_count"</c>.
         /// </summary>
         [JsonProperty("total_count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("total_count")]
+#endif
         public long? TotalCount { get; set; }
 
         public IEnumerator<T> GetEnumerator()
diff --git a/src/Stripe.net/Entities/SubscriptionItems/SubscriptionItem.cs b/src/Stripe.net/Entities/SubscriptionItems/SubscriptionItem.cs
index 868c759914..816d03d3f4 100644
--- a/src/Stripe.net/Entities/SubscriptionItems/SubscriptionItem.cs
+++ b/src/Stripe.net/Entities/SubscriptionItems/SubscriptionItem.cs
@@ -6,23 +6,35 @@ namespace Stripe
     using System.Linq;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Subscription items allow you to create customer subscriptions with more than one plan,
     /// making it easy to represent complex billing relationships.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SubscriptionItem : StripeEntity<SubscriptionItem>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -30,6 +42,9 @@ public class SubscriptionItem : StripeEntity<SubscriptionItem>, IHasId, IHasMeta
         /// advanced to a new billing period.
         /// </summary>
         [JsonProperty("billing_thresholds")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_thresholds")]
+#endif
         public SubscriptionItemBillingThresholds BillingThresholds { get; set; }
 
         /// <summary>
@@ -37,12 +52,20 @@ public class SubscriptionItem : StripeEntity<SubscriptionItem>, IHasId, IHasMeta
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// Whether this object is deleted or not.
         /// </summary>
         [JsonProperty("deleted", NullValueHandling = NullValueHandling.Ignore)]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+        [STJS.JsonIgnore(Condition = STJS.JsonIgnoreCondition.WhenWritingNull)]
+#endif
         public bool? Deleted { get; set; }
 
         #region Expandable Discounts
@@ -53,6 +76,9 @@ public class SubscriptionItem : StripeEntity<SubscriptionItem>, IHasId, IHasMeta
         /// before subscription discounts. Use <c>expand[]=discounts</c> to expand each discount.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public List<string> DiscountIds
         {
             get => this.InternalDiscounts?.Select((x) => x.Id).ToList();
@@ -67,6 +93,9 @@ public List<string> DiscountIds
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public List<Discount> Discounts
         {
             get => this.InternalDiscounts?.Select((x) => x.ExpandedObject).ToList();
@@ -74,6 +103,9 @@ public List<Discount> Discounts
         }
 
         [JsonProperty("discounts", ItemConverterType = typeof(ExpandableFieldConverter<Discount>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         internal List<ExpandableField<Discount>> InternalDiscounts { get; set; }
         #endregion
 
@@ -83,6 +115,9 @@ public List<Discount> Discounts
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -106,6 +141,9 @@ public List<Discount> Discounts
         /// href="https://stripe.com/docs/products-prices/overview">products and prices</a>.
         /// </summary>
         [JsonProperty("plan")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("plan")]
+#endif
         public Plan Plan { get; set; }
 
         /// <summary>
@@ -127,6 +165,9 @@ public List<Discount> Discounts
         /// href="https://stripe.com/docs/products-prices/overview">products and prices</a>.
         /// </summary>
         [JsonProperty("price")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price")]
+#endif
         public Price Price { get; set; }
 
         /// <summary>
@@ -134,12 +175,18 @@ public List<Discount> Discounts
         /// to which the customer should be subscribed.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long Quantity { get; set; }
 
         /// <summary>
         /// The <c>subscription</c> this <c>subscription_item</c> belongs to.
         /// </summary>
         [JsonProperty("subscription")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription")]
+#endif
         public string Subscription { get; set; }
 
         /// <summary>
@@ -148,6 +195,9 @@ public List<Discount> Discounts
         /// <c>subscription_item</c>.
         /// </summary>
         [JsonProperty("tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rates")]
+#endif
         public List<TaxRate> TaxRates { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SubscriptionItems/SubscriptionItemBillingThresholds.cs b/src/Stripe.net/Entities/SubscriptionItems/SubscriptionItemBillingThresholds.cs
index 6d689bb511..6e5501e26b 100644
--- a/src/Stripe.net/Entities/SubscriptionItems/SubscriptionItemBillingThresholds.cs
+++ b/src/Stripe.net/Entities/SubscriptionItems/SubscriptionItemBillingThresholds.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionItemBillingThresholds : StripeEntity<SubscriptionItemBillingThresholds>
     {
@@ -9,6 +12,9 @@ public class SubscriptionItemBillingThresholds : StripeEntity<SubscriptionItemBi
         /// Usage threshold that triggers the subscription to create an invoice.
         /// </summary>
         [JsonProperty("usage_gte")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("usage_gte")]
+#endif
         public long? UsageGte { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedule.cs b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedule.cs
index be1ceb4147..1f8f3edd6e 100644
--- a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedule.cs
+++ b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedule.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A subscription schedule allows you to create and manage the lifecycle of a subscription
@@ -14,18 +17,27 @@ namespace Stripe
     /// href="https://stripe.com/docs/billing/subscriptions/subscription-schedules">Subscription
     /// schedules</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SubscriptionSchedule : StripeEntity<SubscriptionSchedule>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         #region Expandable Application
@@ -35,6 +47,9 @@ public class SubscriptionSchedule : StripeEntity<SubscriptionSchedule>, IHasId,
         /// ID of the Connect Application that created the schedule.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ApplicationId
         {
             get => this.InternalApplication?.Id;
@@ -48,6 +63,9 @@ public string ApplicationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Application Application
         {
             get => this.InternalApplication?.ExpandedObject;
@@ -56,6 +74,10 @@ public Application Application
 
         [JsonProperty("application")]
         [JsonConverter(typeof(ExpandableFieldConverter<Application>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Application>))]
+#endif
         internal ExpandableField<Application> InternalApplication { get; set; }
         #endregion
 
@@ -65,6 +87,10 @@ public Application Application
         /// </summary>
         [JsonProperty("canceled_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("canceled_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? CanceledAt { get; set; }
 
         /// <summary>
@@ -73,6 +99,10 @@ public Application Application
         /// </summary>
         [JsonProperty("completed_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("completed_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? CompletedAt { get; set; }
 
         /// <summary>
@@ -80,6 +110,10 @@ public Application Application
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -87,6 +121,9 @@ public Application Application
         /// schedule, if it is <c>active</c>.
         /// </summary>
         [JsonProperty("current_phase")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("current_phase")]
+#endif
         public SubscriptionScheduleCurrentPhase CurrentPhase { get; set; }
 
         #region Expandable Customer
@@ -96,6 +133,9 @@ public Application Application
         /// ID of the customer who owns the subscription schedule.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerId
         {
             get => this.InternalCustomer?.Id;
@@ -109,6 +149,9 @@ public string CustomerId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Customer Customer
         {
             get => this.InternalCustomer?.ExpandedObject;
@@ -117,10 +160,17 @@ public Customer Customer
 
         [JsonProperty("customer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Customer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Customer>))]
+#endif
         internal ExpandableField<Customer> InternalCustomer { get; set; }
         #endregion
 
         [JsonProperty("default_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_settings")]
+#endif
         public SubscriptionScheduleDefaultSettings DefaultSettings { get; set; }
 
         /// <summary>
@@ -132,6 +182,9 @@ public Customer Customer
         /// One of: <c>cancel</c>, <c>none</c>, <c>release</c>, or <c>renew</c>.
         /// </summary>
         [JsonProperty("end_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end_behavior")]
+#endif
         public string EndBehavior { get; set; }
 
         /// <summary>
@@ -139,6 +192,9 @@ public Customer Customer
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -147,12 +203,18 @@ public Customer Customer
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Configuration for the subscription schedule's phases.
         /// </summary>
         [JsonProperty("phases")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phases")]
+#endif
         public List<SubscriptionSchedulePhase> Phases { get; set; }
 
         /// <summary>
@@ -161,12 +223,19 @@ public Customer Customer
         /// </summary>
         [JsonProperty("released_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("released_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ReleasedAt { get; set; }
 
         /// <summary>
         /// ID of the subscription once managed by the subscription schedule (if it is released).
         /// </summary>
         [JsonProperty("released_subscription")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("released_subscription")]
+#endif
         public string ReleasedSubscription { get; set; }
 
         /// <summary>
@@ -179,6 +248,9 @@ public Customer Customer
         /// <c>released</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         #region Expandable Subscription
@@ -188,6 +260,9 @@ public Customer Customer
         /// ID of the subscription managed by the subscription schedule.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string SubscriptionId
         {
             get => this.InternalSubscription?.Id;
@@ -201,6 +276,9 @@ public string SubscriptionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Subscription Subscription
         {
             get => this.InternalSubscription?.ExpandedObject;
@@ -209,6 +287,10 @@ public Subscription Subscription
 
         [JsonProperty("subscription")]
         [JsonConverter(typeof(ExpandableFieldConverter<Subscription>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Subscription>))]
+#endif
         internal ExpandableField<Subscription> InternalSubscription { get; set; }
         #endregion
 
@@ -219,6 +301,9 @@ public Subscription Subscription
         /// ID of the test clock this subscription schedule belongs to.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string TestClockId
         {
             get => this.InternalTestClock?.Id;
@@ -232,6 +317,9 @@ public string TestClockId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public TestHelpers.TestClock TestClock
         {
             get => this.InternalTestClock?.ExpandedObject;
@@ -240,6 +328,10 @@ public TestHelpers.TestClock TestClock
 
         [JsonProperty("test_clock")]
         [JsonConverter(typeof(ExpandableFieldConverter<TestHelpers.TestClock>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("test_clock")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<TestHelpers.TestClock>))]
+#endif
         internal ExpandableField<TestHelpers.TestClock> InternalTestClock { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleCurrentPhase.cs b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleCurrentPhase.cs
index 458596e4b3..ee53f65e94 100644
--- a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleCurrentPhase.cs
+++ b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleCurrentPhase.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionScheduleCurrentPhase : StripeEntity<SubscriptionScheduleCurrentPhase>
     {
@@ -12,6 +15,10 @@ public class SubscriptionScheduleCurrentPhase : StripeEntity<SubscriptionSchedul
         /// </summary>
         [JsonProperty("end_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? EndDate { get; set; }
 
         /// <summary>
@@ -19,6 +26,10 @@ public class SubscriptionScheduleCurrentPhase : StripeEntity<SubscriptionSchedul
         /// </summary>
         [JsonProperty("start_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("start_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? StartDate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleDefaultSettings.cs b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleDefaultSettings.cs
index 553c30d076..35459e069a 100644
--- a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleDefaultSettings.cs
+++ b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleDefaultSettings.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SubscriptionScheduleDefaultSettings : StripeEntity<SubscriptionScheduleDefaultSettings>
     {
         /// <summary>
@@ -12,9 +18,15 @@ public class SubscriptionScheduleDefaultSettings : StripeEntity<SubscriptionSche
         /// the application owner's Stripe account during this phase of the schedule.
         /// </summary>
         [JsonProperty("application_fee_percent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_percent")]
+#endif
         public decimal? ApplicationFeePercent { get; set; }
 
         [JsonProperty("automatic_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatic_tax")]
+#endif
         public SubscriptionScheduleDefaultSettingsAutomaticTax AutomaticTax { get; set; }
 
         /// <summary>
@@ -26,6 +38,9 @@ public class SubscriptionScheduleDefaultSettings : StripeEntity<SubscriptionSche
         /// One of: <c>automatic</c>, or <c>phase_start</c>.
         /// </summary>
         [JsonProperty("billing_cycle_anchor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_cycle_anchor")]
+#endif
         public string BillingCycleAnchor { get; set; }
 
         /// <summary>
@@ -33,6 +48,9 @@ public class SubscriptionScheduleDefaultSettings : StripeEntity<SubscriptionSche
         /// new billing period.
         /// </summary>
         [JsonProperty("billing_thresholds")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_thresholds")]
+#endif
         public SubscriptionScheduleDefaultSettingsBillingThresholds BillingThresholds { get; set; }
 
         /// <summary>
@@ -44,6 +62,9 @@ public class SubscriptionScheduleDefaultSettings : StripeEntity<SubscriptionSche
         /// One of: <c>charge_automatically</c>, or <c>send_invoice</c>.
         /// </summary>
         [JsonProperty("collection_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("collection_method")]
+#endif
         public string CollectionMethod { get; set; }
 
         #region Expandable DefaultPaymentMethod
@@ -54,6 +75,9 @@ public class SubscriptionScheduleDefaultSettings : StripeEntity<SubscriptionSche
         /// will use the default payment method in the customer's invoice settings.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DefaultPaymentMethodId
         {
             get => this.InternalDefaultPaymentMethod?.Id;
@@ -68,6 +92,9 @@ public string DefaultPaymentMethodId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PaymentMethod DefaultPaymentMethod
         {
             get => this.InternalDefaultPaymentMethod?.ExpandedObject;
@@ -76,6 +103,10 @@ public PaymentMethod DefaultPaymentMethod
 
         [JsonProperty("default_payment_method")]
         [JsonConverter(typeof(ExpandableFieldConverter<PaymentMethod>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_payment_method")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PaymentMethod>))]
+#endif
         internal ExpandableField<PaymentMethod> InternalDefaultPaymentMethod { get; set; }
         #endregion
 
@@ -85,9 +116,15 @@ public PaymentMethod DefaultPaymentMethod
         /// certain local payment methods UIs.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         [JsonProperty("invoice_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_settings")]
+#endif
         public SubscriptionScheduleDefaultSettingsInvoiceSettings InvoiceSettings { get; set; }
 
         #region Expandable OnBehalfOf
@@ -98,6 +135,9 @@ public PaymentMethod DefaultPaymentMethod
         /// schedule's subscription. See the Connect documentation for details.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string OnBehalfOfId
         {
             get => this.InternalOnBehalfOf?.Id;
@@ -112,6 +152,9 @@ public string OnBehalfOfId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account OnBehalfOf
         {
             get => this.InternalOnBehalfOf?.ExpandedObject;
@@ -120,6 +163,10 @@ public Account OnBehalfOf
 
         [JsonProperty("on_behalf_of")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalOnBehalfOf { get; set; }
         #endregion
 
@@ -129,6 +176,9 @@ public Account OnBehalfOf
         /// subscription's invoices.
         /// </summary>
         [JsonProperty("transfer_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_data")]
+#endif
         public SubscriptionScheduleDefaultSettingsTransferData TransferData { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsAutomaticTax.cs b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsAutomaticTax.cs
index f7858ea804..a62eb628de 100644
--- a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsAutomaticTax.cs
+++ b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsAutomaticTax.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionScheduleDefaultSettingsAutomaticTax : StripeEntity<SubscriptionScheduleDefaultSettingsAutomaticTax>
     {
@@ -9,12 +12,18 @@ public class SubscriptionScheduleDefaultSettingsAutomaticTax : StripeEntity<Subs
         /// If Stripe disabled automatic tax, this enum describes why.
         /// </summary>
         [JsonProperty("disabled_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("disabled_reason")]
+#endif
         public string DisabledReason { get; set; }
 
         /// <summary>
         /// Whether Stripe automatically computes tax on invoices created during this phase.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class SubscriptionScheduleDefaultSettingsAutomaticTax : StripeEntity<Subs
         /// transaction is returned in the report of the connected account.
         /// </summary>
         [JsonProperty("liability")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("liability")]
+#endif
         public SubscriptionScheduleDefaultSettingsAutomaticTaxLiability Liability { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsAutomaticTaxLiability.cs b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsAutomaticTaxLiability.cs
index 8e7741a70c..7d9449821c 100644
--- a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsAutomaticTaxLiability.cs
+++ b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsAutomaticTaxLiability.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SubscriptionScheduleDefaultSettingsAutomaticTaxLiability : StripeEntity<SubscriptionScheduleDefaultSettingsAutomaticTaxLiability>
     {
         #region Expandable Account
@@ -13,6 +19,9 @@ public class SubscriptionScheduleDefaultSettingsAutomaticTaxLiability : StripeEn
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AccountId
         {
             get => this.InternalAccount?.Id;
@@ -26,6 +35,9 @@ public string AccountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Account
         {
             get => this.InternalAccount?.ExpandedObject;
@@ -34,6 +46,10 @@ public Account Account
 
         [JsonProperty("account")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalAccount { get; set; }
         #endregion
 
@@ -42,6 +58,9 @@ public Account Account
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsBillingThresholds.cs b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsBillingThresholds.cs
index dcd7c0c6d3..c2f87dbce4 100644
--- a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsBillingThresholds.cs
+++ b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsBillingThresholds.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionScheduleDefaultSettingsBillingThresholds : StripeEntity<SubscriptionScheduleDefaultSettingsBillingThresholds>
     {
@@ -9,6 +12,9 @@ public class SubscriptionScheduleDefaultSettingsBillingThresholds : StripeEntity
         /// Monetary threshold that triggers the subscription to create an invoice.
         /// </summary>
         [JsonProperty("amount_gte")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_gte")]
+#endif
         public long? AmountGte { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class SubscriptionScheduleDefaultSettingsBillingThresholds : StripeEntity
         /// <c>aggregate_usage=last_ever</c>.
         /// </summary>
         [JsonProperty("reset_billing_cycle_anchor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reset_billing_cycle_anchor")]
+#endif
         public bool? ResetBillingCycleAnchor { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsInvoiceSettings.cs b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsInvoiceSettings.cs
index 54837abdad..3c7805fee8 100644
--- a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsInvoiceSettings.cs
+++ b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsInvoiceSettings.cs
@@ -5,7 +5,13 @@ namespace Stripe
     using System.Linq;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SubscriptionScheduleDefaultSettingsInvoiceSettings : StripeEntity<SubscriptionScheduleDefaultSettingsInvoiceSettings>
     {
         #region Expandable AccountTaxIds
@@ -16,6 +22,9 @@ public class SubscriptionScheduleDefaultSettingsInvoiceSettings : StripeEntity<S
         /// generated by the subscription schedule.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public List<string> AccountTaxIdIds
         {
             get => this.InternalAccountTaxIds?.Select((x) => x.Id).ToList();
@@ -30,6 +39,9 @@ public List<string> AccountTaxIdIds
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public List<TaxId> AccountTaxIds
         {
             get => this.InternalAccountTaxIds?.Select((x) => x.ExpandedObject).ToList();
@@ -37,6 +49,9 @@ public List<TaxId> AccountTaxIds
         }
 
         [JsonProperty("account_tax_ids", ItemConverterType = typeof(ExpandableFieldConverter<TaxId>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_tax_ids")]
+#endif
         internal List<ExpandableField<TaxId>> InternalAccountTaxIds { get; set; }
         #endregion
 
@@ -46,9 +61,15 @@ public List<TaxId> AccountTaxIds
         /// <c>billing=charge_automatically</c>.
         /// </summary>
         [JsonProperty("days_until_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("days_until_due")]
+#endif
         public long? DaysUntilDue { get; set; }
 
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public SubscriptionScheduleDefaultSettingsInvoiceSettingsIssuer Issuer { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsInvoiceSettingsIssuer.cs b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsInvoiceSettingsIssuer.cs
index 96706166ae..6d1d8160b9 100644
--- a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsInvoiceSettingsIssuer.cs
+++ b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsInvoiceSettingsIssuer.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SubscriptionScheduleDefaultSettingsInvoiceSettingsIssuer : StripeEntity<SubscriptionScheduleDefaultSettingsInvoiceSettingsIssuer>
     {
         #region Expandable Account
@@ -13,6 +19,9 @@ public class SubscriptionScheduleDefaultSettingsInvoiceSettingsIssuer : StripeEn
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AccountId
         {
             get => this.InternalAccount?.Id;
@@ -26,6 +35,9 @@ public string AccountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Account
         {
             get => this.InternalAccount?.ExpandedObject;
@@ -34,6 +46,10 @@ public Account Account
 
         [JsonProperty("account")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalAccount { get; set; }
         #endregion
 
@@ -42,6 +58,9 @@ public Account Account
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsTransferData.cs b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsTransferData.cs
index 4b50b9883a..5ceff2dd40 100644
--- a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsTransferData.cs
+++ b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsTransferData.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SubscriptionScheduleDefaultSettingsTransferData : StripeEntity<SubscriptionScheduleDefaultSettingsTransferData>
     {
         /// <summary>
@@ -13,6 +19,9 @@ public class SubscriptionScheduleDefaultSettingsTransferData : StripeEntity<Subs
         /// destination.
         /// </summary>
         [JsonProperty("amount_percent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_percent")]
+#endif
         public decimal? AmountPercent { get; set; }
 
         #region Expandable Destination
@@ -22,6 +31,9 @@ public class SubscriptionScheduleDefaultSettingsTransferData : StripeEntity<Subs
         /// The account where funds from the payment will be transferred to upon payment success.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DestinationId
         {
             get => this.InternalDestination?.Id;
@@ -35,6 +47,9 @@ public string DestinationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Destination
         {
             get => this.InternalDestination?.ExpandedObject;
@@ -43,6 +58,10 @@ public Account Destination
 
         [JsonProperty("destination")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalDestination { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleInvoiceSettings.cs b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleInvoiceSettings.cs
index 596e0a44aa..2587b6b2f4 100644
--- a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleInvoiceSettings.cs
+++ b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionScheduleInvoiceSettings.cs
@@ -3,11 +3,18 @@ namespace Stripe
     using System;
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
+
     using Stripe.Infrastructure;
 
     public class SubscriptionScheduleInvoiceSettings : StripeEntity<SubscriptionScheduleInvoiceSettings>
     {
         [JsonProperty("days_until_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("days_until_due")]
+#endif
         public long? DaysUntilDue { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhase.cs b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhase.cs
index 26c81f0b5a..62e7b3c62e 100644
--- a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhase.cs
+++ b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhase.cs
@@ -5,7 +5,13 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SubscriptionSchedulePhase : StripeEntity<SubscriptionSchedulePhase>, IHasMetadata
     {
         /// <summary>
@@ -13,6 +19,9 @@ public class SubscriptionSchedulePhase : StripeEntity<SubscriptionSchedulePhase>
         /// invoice for this phase.
         /// </summary>
         [JsonProperty("add_invoice_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("add_invoice_items")]
+#endif
         public List<SubscriptionSchedulePhaseAddInvoiceItem> AddInvoiceItems { get; set; }
 
         /// <summary>
@@ -21,9 +30,15 @@ public class SubscriptionSchedulePhase : StripeEntity<SubscriptionSchedulePhase>
         /// the application owner's Stripe account during this phase of the schedule.
         /// </summary>
         [JsonProperty("application_fee_percent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_percent")]
+#endif
         public decimal? ApplicationFeePercent { get; set; }
 
         [JsonProperty("automatic_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatic_tax")]
+#endif
         public SubscriptionSchedulePhaseAutomaticTax AutomaticTax { get; set; }
 
         /// <summary>
@@ -35,6 +50,9 @@ public class SubscriptionSchedulePhase : StripeEntity<SubscriptionSchedulePhase>
         /// One of: <c>automatic</c>, or <c>phase_start</c>.
         /// </summary>
         [JsonProperty("billing_cycle_anchor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_cycle_anchor")]
+#endif
         public string BillingCycleAnchor { get; set; }
 
         /// <summary>
@@ -42,6 +60,9 @@ public class SubscriptionSchedulePhase : StripeEntity<SubscriptionSchedulePhase>
         /// new billing period.
         /// </summary>
         [JsonProperty("billing_thresholds")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_thresholds")]
+#endif
         public SubscriptionSchedulePhaseBillingThresholds BillingThresholds { get; set; }
 
         /// <summary>
@@ -53,6 +74,9 @@ public class SubscriptionSchedulePhase : StripeEntity<SubscriptionSchedulePhase>
         /// One of: <c>charge_automatically</c>, or <c>send_invoice</c>.
         /// </summary>
         [JsonProperty("collection_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("collection_method")]
+#endif
         public string CollectionMethod { get; set; }
 
         #region Expandable Coupon
@@ -62,6 +86,9 @@ public class SubscriptionSchedulePhase : StripeEntity<SubscriptionSchedulePhase>
         /// ID of the coupon to use during this phase of the subscription schedule.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CouponId
         {
             get => this.InternalCoupon?.Id;
@@ -75,6 +102,9 @@ public string CouponId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Coupon Coupon
         {
             get => this.InternalCoupon?.ExpandedObject;
@@ -83,6 +113,10 @@ public Coupon Coupon
 
         [JsonProperty("coupon")]
         [JsonConverter(typeof(ExpandableFieldConverter<Coupon>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Coupon>))]
+#endif
         internal ExpandableField<Coupon> InternalCoupon { get; set; }
         #endregion
 
@@ -92,6 +126,9 @@ public Coupon Coupon
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         #region Expandable DefaultPaymentMethod
@@ -103,6 +140,9 @@ public Coupon Coupon
         /// default payment method in the customer's invoice settings.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DefaultPaymentMethodId
         {
             get => this.InternalDefaultPaymentMethod?.Id;
@@ -118,6 +158,9 @@ public string DefaultPaymentMethodId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PaymentMethod DefaultPaymentMethod
         {
             get => this.InternalDefaultPaymentMethod?.ExpandedObject;
@@ -126,6 +169,10 @@ public PaymentMethod DefaultPaymentMethod
 
         [JsonProperty("default_payment_method")]
         [JsonConverter(typeof(ExpandableFieldConverter<PaymentMethod>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_payment_method")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PaymentMethod>))]
+#endif
         internal ExpandableField<PaymentMethod> InternalDefaultPaymentMethod { get; set; }
         #endregion
 
@@ -134,6 +181,9 @@ public PaymentMethod DefaultPaymentMethod
         /// schedule.
         /// </summary>
         [JsonProperty("default_tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_tax_rates")]
+#endif
         public List<TaxRate> DefaultTaxRates { get; set; }
 
         /// <summary>
@@ -142,6 +192,9 @@ public PaymentMethod DefaultPaymentMethod
         /// certain local payment methods UIs.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -149,6 +202,9 @@ public PaymentMethod DefaultPaymentMethod
         /// Subscription item discounts are applied before subscription discounts.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<SubscriptionSchedulePhaseDiscount> Discounts { get; set; }
 
         /// <summary>
@@ -156,12 +212,19 @@ public PaymentMethod DefaultPaymentMethod
         /// </summary>
         [JsonProperty("end_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime EndDate { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// The invoice settings applicable during this phase.
         /// </summary>
         [JsonProperty("invoice_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_settings")]
+#endif
         public SubscriptionSchedulePhaseInvoiceSettings InvoiceSettings { get; set; }
 
         /// <summary>
@@ -169,6 +232,9 @@ public PaymentMethod DefaultPaymentMethod
         /// subscription schedule.
         /// </summary>
         [JsonProperty("items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("items")]
+#endif
         public List<SubscriptionSchedulePhaseItem> Items { get; set; }
 
         /// <summary>
@@ -179,6 +245,9 @@ public PaymentMethod DefaultPaymentMethod
         /// <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         #region Expandable OnBehalfOf
@@ -189,6 +258,9 @@ public PaymentMethod DefaultPaymentMethod
         /// schedule's subscription. See the Connect documentation for details.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string OnBehalfOfId
         {
             get => this.InternalOnBehalfOf?.Id;
@@ -203,6 +275,9 @@ public string OnBehalfOfId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account OnBehalfOf
         {
             get => this.InternalOnBehalfOf?.ExpandedObject;
@@ -211,6 +286,10 @@ public Account OnBehalfOf
 
         [JsonProperty("on_behalf_of")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalOnBehalfOf { get; set; }
         #endregion
 
@@ -220,6 +299,9 @@ public Account OnBehalfOf
         /// One of: <c>always_invoice</c>, <c>create_prorations</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("proration_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("proration_behavior")]
+#endif
         public string ProrationBehavior { get; set; }
 
         /// <summary>
@@ -227,6 +309,10 @@ public Account OnBehalfOf
         /// </summary>
         [JsonProperty("start_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("start_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime StartDate { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -235,6 +321,9 @@ public Account OnBehalfOf
         /// subscription's invoices.
         /// </summary>
         [JsonProperty("transfer_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_data")]
+#endif
         public SubscriptionSchedulePhaseTransferData TransferData { get; set; }
 
         /// <summary>
@@ -242,6 +331,10 @@ public Account OnBehalfOf
         /// </summary>
         [JsonProperty("trial_end")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_end")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? TrialEnd { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseAddInvoiceItem.cs b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseAddInvoiceItem.cs
index c6feea04ce..c8c9a7d2b9 100644
--- a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseAddInvoiceItem.cs
+++ b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseAddInvoiceItem.cs
@@ -4,13 +4,22 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SubscriptionSchedulePhaseAddInvoiceItem : StripeEntity<SubscriptionSchedulePhaseAddInvoiceItem>
     {
         /// <summary>
         /// The stackable discounts that will be applied to the item.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<SubscriptionSchedulePhaseAddInvoiceItemDiscount> Discounts { get; set; }
 
         #region Expandable Price
@@ -20,6 +29,9 @@ public class SubscriptionSchedulePhaseAddInvoiceItem : StripeEntity<Subscription
         /// ID of the price used to generate the invoice item.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string PriceId
         {
             get => this.InternalPrice?.Id;
@@ -33,6 +45,9 @@ public string PriceId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Price Price
         {
             get => this.InternalPrice?.ExpandedObject;
@@ -41,6 +56,10 @@ public Price Price
 
         [JsonProperty("price")]
         [JsonConverter(typeof(ExpandableFieldConverter<Price>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Price>))]
+#endif
         internal ExpandableField<Price> InternalPrice { get; set; }
         #endregion
 
@@ -48,6 +67,9 @@ public Price Price
         /// The quantity of the invoice item.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         /// <summary>
@@ -55,6 +77,9 @@ public Price Price
         /// apply to this item.
         /// </summary>
         [JsonProperty("tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rates")]
+#endif
         public List<TaxRate> TaxRates { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseAddInvoiceItemDiscount.cs b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseAddInvoiceItemDiscount.cs
index 473a1c611f..e119c71b0b 100644
--- a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseAddInvoiceItemDiscount.cs
+++ b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseAddInvoiceItemDiscount.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SubscriptionSchedulePhaseAddInvoiceItemDiscount : StripeEntity<SubscriptionSchedulePhaseAddInvoiceItemDiscount>
     {
         #region Expandable Coupon
@@ -13,6 +19,9 @@ public class SubscriptionSchedulePhaseAddInvoiceItemDiscount : StripeEntity<Subs
         /// ID of the coupon to create a new discount for.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CouponId
         {
             get => this.InternalCoupon?.Id;
@@ -26,6 +35,9 @@ public string CouponId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Coupon Coupon
         {
             get => this.InternalCoupon?.ExpandedObject;
@@ -34,6 +46,10 @@ public Coupon Coupon
 
         [JsonProperty("coupon")]
         [JsonConverter(typeof(ExpandableFieldConverter<Coupon>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Coupon>))]
+#endif
         internal ExpandableField<Coupon> InternalCoupon { get; set; }
         #endregion
 
@@ -44,6 +60,9 @@ public Coupon Coupon
         /// ID of an existing discount on the object (or one of its ancestors) to reuse.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DiscountId
         {
             get => this.InternalDiscount?.Id;
@@ -57,6 +76,9 @@ public string DiscountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Discount Discount
         {
             get => this.InternalDiscount?.ExpandedObject;
@@ -65,6 +87,10 @@ public Discount Discount
 
         [JsonProperty("discount")]
         [JsonConverter(typeof(ExpandableFieldConverter<Discount>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Discount>))]
+#endif
         internal ExpandableField<Discount> InternalDiscount { get; set; }
         #endregion
 
@@ -75,6 +101,9 @@ public Discount Discount
         /// ID of the promotion code to create a new discount for.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string PromotionCodeId
         {
             get => this.InternalPromotionCode?.Id;
@@ -88,6 +117,9 @@ public string PromotionCodeId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PromotionCode PromotionCode
         {
             get => this.InternalPromotionCode?.ExpandedObject;
@@ -96,6 +128,10 @@ public PromotionCode PromotionCode
 
         [JsonProperty("promotion_code")]
         [JsonConverter(typeof(ExpandableFieldConverter<PromotionCode>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotion_code")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PromotionCode>))]
+#endif
         internal ExpandableField<PromotionCode> InternalPromotionCode { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseAutomaticTax.cs b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseAutomaticTax.cs
index 70e688e37d..be7ee83aa6 100644
--- a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseAutomaticTax.cs
+++ b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseAutomaticTax.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionSchedulePhaseAutomaticTax : StripeEntity<SubscriptionSchedulePhaseAutomaticTax>
     {
@@ -9,12 +12,18 @@ public class SubscriptionSchedulePhaseAutomaticTax : StripeEntity<SubscriptionSc
         /// If Stripe disabled automatic tax, this enum describes why.
         /// </summary>
         [JsonProperty("disabled_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("disabled_reason")]
+#endif
         public string DisabledReason { get; set; }
 
         /// <summary>
         /// Whether Stripe automatically computes tax on invoices created during this phase.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class SubscriptionSchedulePhaseAutomaticTax : StripeEntity<SubscriptionSc
         /// transaction is returned in the report of the connected account.
         /// </summary>
         [JsonProperty("liability")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("liability")]
+#endif
         public SubscriptionSchedulePhaseAutomaticTaxLiability Liability { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseAutomaticTaxLiability.cs b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseAutomaticTaxLiability.cs
index af1c6c2df0..b707007819 100644
--- a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseAutomaticTaxLiability.cs
+++ b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseAutomaticTaxLiability.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SubscriptionSchedulePhaseAutomaticTaxLiability : StripeEntity<SubscriptionSchedulePhaseAutomaticTaxLiability>
     {
         #region Expandable Account
@@ -13,6 +19,9 @@ public class SubscriptionSchedulePhaseAutomaticTaxLiability : StripeEntity<Subsc
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AccountId
         {
             get => this.InternalAccount?.Id;
@@ -26,6 +35,9 @@ public string AccountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Account
         {
             get => this.InternalAccount?.ExpandedObject;
@@ -34,6 +46,10 @@ public Account Account
 
         [JsonProperty("account")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalAccount { get; set; }
         #endregion
 
@@ -42,6 +58,9 @@ public Account Account
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseBillingThresholds.cs b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseBillingThresholds.cs
index 58bcfd0706..c55587d44e 100644
--- a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseBillingThresholds.cs
+++ b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseBillingThresholds.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionSchedulePhaseBillingThresholds : StripeEntity<SubscriptionSchedulePhaseBillingThresholds>
     {
@@ -9,6 +12,9 @@ public class SubscriptionSchedulePhaseBillingThresholds : StripeEntity<Subscript
         /// Monetary threshold that triggers the subscription to create an invoice.
         /// </summary>
         [JsonProperty("amount_gte")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_gte")]
+#endif
         public long? AmountGte { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class SubscriptionSchedulePhaseBillingThresholds : StripeEntity<Subscript
         /// <c>aggregate_usage=last_ever</c>.
         /// </summary>
         [JsonProperty("reset_billing_cycle_anchor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reset_billing_cycle_anchor")]
+#endif
         public bool? ResetBillingCycleAnchor { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseDiscount.cs b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseDiscount.cs
index cc5a2a6db1..5cce8fd0bc 100644
--- a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseDiscount.cs
+++ b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseDiscount.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SubscriptionSchedulePhaseDiscount : StripeEntity<SubscriptionSchedulePhaseDiscount>
     {
         #region Expandable Coupon
@@ -13,6 +19,9 @@ public class SubscriptionSchedulePhaseDiscount : StripeEntity<SubscriptionSchedu
         /// ID of the coupon to create a new discount for.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CouponId
         {
             get => this.InternalCoupon?.Id;
@@ -26,6 +35,9 @@ public string CouponId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Coupon Coupon
         {
             get => this.InternalCoupon?.ExpandedObject;
@@ -34,6 +46,10 @@ public Coupon Coupon
 
         [JsonProperty("coupon")]
         [JsonConverter(typeof(ExpandableFieldConverter<Coupon>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Coupon>))]
+#endif
         internal ExpandableField<Coupon> InternalCoupon { get; set; }
         #endregion
 
@@ -44,6 +60,9 @@ public Coupon Coupon
         /// ID of an existing discount on the object (or one of its ancestors) to reuse.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DiscountId
         {
             get => this.InternalDiscount?.Id;
@@ -57,6 +76,9 @@ public string DiscountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Discount Discount
         {
             get => this.InternalDiscount?.ExpandedObject;
@@ -65,6 +87,10 @@ public Discount Discount
 
         [JsonProperty("discount")]
         [JsonConverter(typeof(ExpandableFieldConverter<Discount>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Discount>))]
+#endif
         internal ExpandableField<Discount> InternalDiscount { get; set; }
         #endregion
 
@@ -75,6 +101,9 @@ public Discount Discount
         /// ID of the promotion code to create a new discount for.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string PromotionCodeId
         {
             get => this.InternalPromotionCode?.Id;
@@ -88,6 +117,9 @@ public string PromotionCodeId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PromotionCode PromotionCode
         {
             get => this.InternalPromotionCode?.ExpandedObject;
@@ -96,6 +128,10 @@ public PromotionCode PromotionCode
 
         [JsonProperty("promotion_code")]
         [JsonConverter(typeof(ExpandableFieldConverter<PromotionCode>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotion_code")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PromotionCode>))]
+#endif
         internal ExpandableField<PromotionCode> InternalPromotionCode { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseInvoiceSettings.cs b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseInvoiceSettings.cs
index 5a524b8688..a15bb869a6 100644
--- a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseInvoiceSettings.cs
+++ b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseInvoiceSettings.cs
@@ -5,7 +5,13 @@ namespace Stripe
     using System.Linq;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SubscriptionSchedulePhaseInvoiceSettings : StripeEntity<SubscriptionSchedulePhaseInvoiceSettings>
     {
         #region Expandable AccountTaxIds
@@ -16,6 +22,9 @@ public class SubscriptionSchedulePhaseInvoiceSettings : StripeEntity<Subscriptio
         /// on invoices generated by this phase of the subscription schedule.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public List<string> AccountTaxIdIds
         {
             get => this.InternalAccountTaxIds?.Select((x) => x.Id).ToList();
@@ -30,6 +39,9 @@ public List<string> AccountTaxIdIds
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public List<TaxId> AccountTaxIds
         {
             get => this.InternalAccountTaxIds?.Select((x) => x.ExpandedObject).ToList();
@@ -37,6 +49,9 @@ public List<TaxId> AccountTaxIds
         }
 
         [JsonProperty("account_tax_ids", ItemConverterType = typeof(ExpandableFieldConverter<TaxId>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_tax_ids")]
+#endif
         internal List<ExpandableField<TaxId>> InternalAccountTaxIds { get; set; }
         #endregion
 
@@ -46,6 +61,9 @@ public List<TaxId> AccountTaxIds
         /// <c>billing=charge_automatically</c>.
         /// </summary>
         [JsonProperty("days_until_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("days_until_due")]
+#endif
         public long? DaysUntilDue { get; set; }
 
         /// <summary>
@@ -53,6 +71,9 @@ public List<TaxId> AccountTaxIds
         /// branding and support information of the specified account.
         /// </summary>
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public SubscriptionSchedulePhaseInvoiceSettingsIssuer Issuer { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseInvoiceSettingsIssuer.cs b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseInvoiceSettingsIssuer.cs
index c162ac5ea1..1177bb395e 100644
--- a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseInvoiceSettingsIssuer.cs
+++ b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseInvoiceSettingsIssuer.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SubscriptionSchedulePhaseInvoiceSettingsIssuer : StripeEntity<SubscriptionSchedulePhaseInvoiceSettingsIssuer>
     {
         #region Expandable Account
@@ -13,6 +19,9 @@ public class SubscriptionSchedulePhaseInvoiceSettingsIssuer : StripeEntity<Subsc
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AccountId
         {
             get => this.InternalAccount?.Id;
@@ -26,6 +35,9 @@ public string AccountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Account
         {
             get => this.InternalAccount?.ExpandedObject;
@@ -34,6 +46,10 @@ public Account Account
 
         [JsonProperty("account")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalAccount { get; set; }
         #endregion
 
@@ -42,6 +58,9 @@ public Account Account
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseItem.cs b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseItem.cs
index b7729c1ce4..ebb0013de2 100644
--- a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseItem.cs
+++ b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseItem.cs
@@ -4,7 +4,13 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SubscriptionSchedulePhaseItem : StripeEntity<SubscriptionSchedulePhaseItem>, IHasMetadata
     {
         /// <summary>
@@ -12,6 +18,9 @@ public class SubscriptionSchedulePhaseItem : StripeEntity<SubscriptionSchedulePh
         /// advanced to a new billing period.
         /// </summary>
         [JsonProperty("billing_thresholds")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_thresholds")]
+#endif
         public SubscriptionSchedulePhaseItemBillingThresholds BillingThresholds { get; set; }
 
         /// <summary>
@@ -19,6 +28,9 @@ public class SubscriptionSchedulePhaseItem : StripeEntity<SubscriptionSchedulePh
         /// before subscription discounts. Use <c>expand[]=discounts</c> to expand each discount.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<SubscriptionSchedulePhaseItemDiscount> Discounts { get; set; }
 
         /// <summary>
@@ -27,6 +39,9 @@ public class SubscriptionSchedulePhaseItem : StripeEntity<SubscriptionSchedulePh
         /// <c>metadata</c> when the phase is entered.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         #region Expandable Plan
@@ -36,6 +51,9 @@ public class SubscriptionSchedulePhaseItem : StripeEntity<SubscriptionSchedulePh
         /// ID of the plan to which the customer should be subscribed.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string PlanId
         {
             get => this.InternalPlan?.Id;
@@ -49,6 +67,9 @@ public string PlanId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Plan Plan
         {
             get => this.InternalPlan?.ExpandedObject;
@@ -57,6 +78,10 @@ public Plan Plan
 
         [JsonProperty("plan")]
         [JsonConverter(typeof(ExpandableFieldConverter<Plan>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("plan")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Plan>))]
+#endif
         internal ExpandableField<Plan> InternalPlan { get; set; }
         #endregion
 
@@ -67,6 +92,9 @@ public Plan Plan
         /// ID of the price to which the customer should be subscribed.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string PriceId
         {
             get => this.InternalPrice?.Id;
@@ -80,6 +108,9 @@ public string PriceId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Price Price
         {
             get => this.InternalPrice?.ExpandedObject;
@@ -88,6 +119,10 @@ public Price Price
 
         [JsonProperty("price")]
         [JsonConverter(typeof(ExpandableFieldConverter<Price>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Price>))]
+#endif
         internal ExpandableField<Price> InternalPrice { get; set; }
         #endregion
 
@@ -95,6 +130,9 @@ public Price Price
         /// Quantity of the plan to which the customer should be subscribed.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long Quantity { get; set; }
 
         /// <summary>
@@ -102,6 +140,9 @@ public Price Price
         /// <c>default_tax_rates</c> on the phase do not apply to this <c>phase_item</c>.
         /// </summary>
         [JsonProperty("tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rates")]
+#endif
         public List<TaxRate> TaxRates { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseItemBillingThresholds.cs b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseItemBillingThresholds.cs
index 56adb1bc43..8a25fdb981 100644
--- a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseItemBillingThresholds.cs
+++ b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseItemBillingThresholds.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionSchedulePhaseItemBillingThresholds : StripeEntity<SubscriptionSchedulePhaseItemBillingThresholds>
     {
@@ -9,6 +12,9 @@ public class SubscriptionSchedulePhaseItemBillingThresholds : StripeEntity<Subsc
         /// Usage threshold that triggers the subscription to create an invoice.
         /// </summary>
         [JsonProperty("usage_gte")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("usage_gte")]
+#endif
         public long? UsageGte { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseItemDiscount.cs b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseItemDiscount.cs
index 5e512e3c45..1329eee78e 100644
--- a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseItemDiscount.cs
+++ b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseItemDiscount.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SubscriptionSchedulePhaseItemDiscount : StripeEntity<SubscriptionSchedulePhaseItemDiscount>
     {
         #region Expandable Coupon
@@ -13,6 +19,9 @@ public class SubscriptionSchedulePhaseItemDiscount : StripeEntity<SubscriptionSc
         /// ID of the coupon to create a new discount for.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CouponId
         {
             get => this.InternalCoupon?.Id;
@@ -26,6 +35,9 @@ public string CouponId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Coupon Coupon
         {
             get => this.InternalCoupon?.ExpandedObject;
@@ -34,6 +46,10 @@ public Coupon Coupon
 
         [JsonProperty("coupon")]
         [JsonConverter(typeof(ExpandableFieldConverter<Coupon>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Coupon>))]
+#endif
         internal ExpandableField<Coupon> InternalCoupon { get; set; }
         #endregion
 
@@ -44,6 +60,9 @@ public Coupon Coupon
         /// ID of an existing discount on the object (or one of its ancestors) to reuse.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DiscountId
         {
             get => this.InternalDiscount?.Id;
@@ -57,6 +76,9 @@ public string DiscountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Discount Discount
         {
             get => this.InternalDiscount?.ExpandedObject;
@@ -65,6 +87,10 @@ public Discount Discount
 
         [JsonProperty("discount")]
         [JsonConverter(typeof(ExpandableFieldConverter<Discount>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Discount>))]
+#endif
         internal ExpandableField<Discount> InternalDiscount { get; set; }
         #endregion
 
@@ -75,6 +101,9 @@ public Discount Discount
         /// ID of the promotion code to create a new discount for.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string PromotionCodeId
         {
             get => this.InternalPromotionCode?.Id;
@@ -88,6 +117,9 @@ public string PromotionCodeId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PromotionCode PromotionCode
         {
             get => this.InternalPromotionCode?.ExpandedObject;
@@ -96,6 +128,10 @@ public PromotionCode PromotionCode
 
         [JsonProperty("promotion_code")]
         [JsonConverter(typeof(ExpandableFieldConverter<PromotionCode>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotion_code")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PromotionCode>))]
+#endif
         internal ExpandableField<PromotionCode> InternalPromotionCode { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhasePlanBillingThresholds.cs b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhasePlanBillingThresholds.cs
index 5e4c3f3f91..256073294a 100644
--- a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhasePlanBillingThresholds.cs
+++ b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhasePlanBillingThresholds.cs
@@ -1,10 +1,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionSchedulePhasePlanBillingThresholds : StripeEntity<SubscriptionSchedulePhasePlanBillingThresholds>
     {
         [JsonProperty("usage_gte")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("usage_gte")]
+#endif
         public long? UsageGte { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseTransferData.cs b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseTransferData.cs
index ebe99f9069..9d33011f39 100644
--- a/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseTransferData.cs
+++ b/src/Stripe.net/Entities/SubscriptionSchedules/SubscriptionSchedulePhaseTransferData.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SubscriptionSchedulePhaseTransferData : StripeEntity<SubscriptionSchedulePhaseTransferData>
     {
         /// <summary>
@@ -13,6 +19,9 @@ public class SubscriptionSchedulePhaseTransferData : StripeEntity<SubscriptionSc
         /// destination.
         /// </summary>
         [JsonProperty("amount_percent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_percent")]
+#endif
         public decimal? AmountPercent { get; set; }
 
         #region Expandable Destination
@@ -22,6 +31,9 @@ public class SubscriptionSchedulePhaseTransferData : StripeEntity<SubscriptionSc
         /// The account where funds from the payment will be transferred to upon payment success.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DestinationId
         {
             get => this.InternalDestination?.Id;
@@ -35,6 +47,9 @@ public string DestinationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Destination
         {
             get => this.InternalDestination?.ExpandedObject;
@@ -43,6 +58,10 @@ public Account Destination
 
         [JsonProperty("destination")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalDestination { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Subscriptions/Subscription.cs b/src/Stripe.net/Entities/Subscriptions/Subscription.cs
index bf804b962b..5f7dd7f283 100644
--- a/src/Stripe.net/Entities/Subscriptions/Subscription.cs
+++ b/src/Stripe.net/Entities/Subscriptions/Subscription.cs
@@ -6,6 +6,9 @@ namespace Stripe
     using System.Linq;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Subscriptions allow you to charge a customer on a recurring basis.
@@ -13,18 +16,27 @@ namespace Stripe
     /// Related guide: <a href="https://stripe.com/docs/billing/subscriptions/creating">Creating
     /// subscriptions</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class Subscription : StripeEntity<Subscription>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         #region Expandable Application
@@ -34,6 +46,9 @@ public class Subscription : StripeEntity<Subscription>, IHasId, IHasMetadata, IH
         /// ID of the Connect Application that created the subscription.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ApplicationId
         {
             get => this.InternalApplication?.Id;
@@ -47,6 +62,9 @@ public string ApplicationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Application Application
         {
             get => this.InternalApplication?.ExpandedObject;
@@ -55,6 +73,10 @@ public Application Application
 
         [JsonProperty("application")]
         [JsonConverter(typeof(ExpandableFieldConverter<Application>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Application>))]
+#endif
         internal ExpandableField<Application> InternalApplication { get; set; }
         #endregion
 
@@ -64,9 +86,15 @@ public Application Application
         /// the application owner's Stripe account.
         /// </summary>
         [JsonProperty("application_fee_percent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_percent")]
+#endif
         public decimal? ApplicationFeePercent { get; set; }
 
         [JsonProperty("automatic_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatic_tax")]
+#endif
         public SubscriptionAutomaticTax AutomaticTax { get; set; }
 
         /// <summary>
@@ -78,12 +106,19 @@ public Application Application
         /// </summary>
         [JsonProperty("billing_cycle_anchor")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_cycle_anchor")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime BillingCycleAnchor { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// The fixed values used to calculate the <c>billing_cycle_anchor</c>.
         /// </summary>
         [JsonProperty("billing_cycle_anchor_config")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_cycle_anchor_config")]
+#endif
         public SubscriptionBillingCycleAnchorConfig BillingCycleAnchorConfig { get; set; }
 
         /// <summary>
@@ -91,6 +126,9 @@ public Application Application
         /// new billing period.
         /// </summary>
         [JsonProperty("billing_thresholds")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_thresholds")]
+#endif
         public SubscriptionBillingThresholds BillingThresholds { get; set; }
 
         /// <summary>
@@ -98,6 +136,10 @@ public Application Application
         /// </summary>
         [JsonProperty("cancel_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancel_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? CancelAt { get; set; }
 
         /// <summary>
@@ -105,6 +147,9 @@ public Application Application
         /// <c>status=canceled</c>) cancel at the end of the current billing period.
         /// </summary>
         [JsonProperty("cancel_at_period_end")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancel_at_period_end")]
+#endif
         public bool CancelAtPeriodEnd { get; set; }
 
         /// <summary>
@@ -115,12 +160,19 @@ public Application Application
         /// </summary>
         [JsonProperty("canceled_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("canceled_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? CanceledAt { get; set; }
 
         /// <summary>
         /// Details about why this subscription was cancelled.
         /// </summary>
         [JsonProperty("cancellation_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancellation_details")]
+#endif
         public SubscriptionCancellationDetails CancellationDetails { get; set; }
 
         /// <summary>
@@ -132,6 +184,9 @@ public Application Application
         /// One of: <c>charge_automatically</c>, or <c>send_invoice</c>.
         /// </summary>
         [JsonProperty("collection_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("collection_method")]
+#endif
         public string CollectionMethod { get; set; }
 
         /// <summary>
@@ -139,6 +194,10 @@ public Application Application
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -147,6 +206,9 @@ public Application Application
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -155,6 +217,10 @@ public Application Application
         /// </summary>
         [JsonProperty("current_period_end")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("current_period_end")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime CurrentPeriodEnd { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -162,6 +228,10 @@ public Application Application
         /// </summary>
         [JsonProperty("current_period_start")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("current_period_start")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime CurrentPeriodStart { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         #region Expandable Customer
@@ -171,6 +241,9 @@ public Application Application
         /// ID of the customer who owns the subscription.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerId
         {
             get => this.InternalCustomer?.Id;
@@ -184,6 +257,9 @@ public string CustomerId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Customer Customer
         {
             get => this.InternalCustomer?.ExpandedObject;
@@ -192,6 +268,10 @@ public Customer Customer
 
         [JsonProperty("customer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Customer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Customer>))]
+#endif
         internal ExpandableField<Customer> InternalCustomer { get; set; }
         #endregion
 
@@ -201,6 +281,9 @@ public Customer Customer
         /// <c>collection_method=charge_automatically</c>.
         /// </summary>
         [JsonProperty("days_until_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("days_until_due")]
+#endif
         public long? DaysUntilDue { get; set; }
 
         #region Expandable DefaultPaymentMethod
@@ -215,6 +298,9 @@ public Customer Customer
         /// href="https://stripe.com/docs/api/customers/object#customer_object-default_source">default_source</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DefaultPaymentMethodId
         {
             get => this.InternalDefaultPaymentMethod?.Id;
@@ -233,6 +319,9 @@ public string DefaultPaymentMethodId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PaymentMethod DefaultPaymentMethod
         {
             get => this.InternalDefaultPaymentMethod?.ExpandedObject;
@@ -241,6 +330,10 @@ public PaymentMethod DefaultPaymentMethod
 
         [JsonProperty("default_payment_method")]
         [JsonConverter(typeof(ExpandableFieldConverter<PaymentMethod>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_payment_method")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PaymentMethod>))]
+#endif
         internal ExpandableField<PaymentMethod> InternalDefaultPaymentMethod { get; set; }
         #endregion
 
@@ -257,6 +350,9 @@ public PaymentMethod DefaultPaymentMethod
         /// href="https://stripe.com/docs/api/customers/object#customer_object-default_source">default_source</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DefaultSourceId
         {
             get => this.InternalDefaultSource?.Id;
@@ -276,6 +372,9 @@ public string DefaultSourceId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public IPaymentSource DefaultSource
         {
             get => this.InternalDefaultSource?.ExpandedObject;
@@ -284,6 +383,10 @@ public IPaymentSource DefaultSource
 
         [JsonProperty("default_source")]
         [JsonConverter(typeof(ExpandableFieldConverter<IPaymentSource>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_source")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<IPaymentSource>))]
+#endif
         internal ExpandableField<IPaymentSource> InternalDefaultSource { get; set; }
         #endregion
 
@@ -293,6 +396,9 @@ public IPaymentSource DefaultSource
         /// populated from the subscription.
         /// </summary>
         [JsonProperty("default_tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_tax_rates")]
+#endif
         public List<TaxRate> DefaultTaxRates { get; set; }
 
         /// <summary>
@@ -301,6 +407,9 @@ public IPaymentSource DefaultSource
         /// and certain local payment methods UIs.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -310,6 +419,9 @@ public IPaymentSource DefaultSource
         /// version. Use <c>discounts</c> instead.
         /// </summary>
         [JsonProperty("discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+#endif
         public Discount Discount { get; set; }
 
         #region Expandable Discounts
@@ -320,6 +432,9 @@ public IPaymentSource DefaultSource
         /// before subscription discounts. Use <c>expand[]=discounts</c> to expand each discount.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public List<string> DiscountIds
         {
             get => this.InternalDiscounts?.Select((x) => x.Id).ToList();
@@ -334,6 +449,9 @@ public List<string> DiscountIds
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public List<Discount> Discounts
         {
             get => this.InternalDiscounts?.Select((x) => x.ExpandedObject).ToList();
@@ -341,6 +459,9 @@ public List<Discount> Discounts
         }
 
         [JsonProperty("discounts", ItemConverterType = typeof(ExpandableFieldConverter<Discount>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         internal List<ExpandableField<Discount>> InternalDiscounts { get; set; }
         #endregion
 
@@ -349,15 +470,25 @@ public List<Discount> Discounts
         /// </summary>
         [JsonProperty("ended_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ended_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? EndedAt { get; set; }
 
         [JsonProperty("invoice_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_settings")]
+#endif
         public SubscriptionInvoiceSettings InvoiceSettings { get; set; }
 
         /// <summary>
         /// List of subscription items, each with an attached price.
         /// </summary>
         [JsonProperty("items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("items")]
+#endif
         public StripeList<SubscriptionItem> Items { get; set; }
 
         #region Expandable LatestInvoice
@@ -367,6 +498,9 @@ public List<Discount> Discounts
         /// The most recent invoice this subscription has generated.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string LatestInvoiceId
         {
             get => this.InternalLatestInvoice?.Id;
@@ -380,6 +514,9 @@ public string LatestInvoiceId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Invoice LatestInvoice
         {
             get => this.InternalLatestInvoice?.ExpandedObject;
@@ -388,6 +525,10 @@ public Invoice LatestInvoice
 
         [JsonProperty("latest_invoice")]
         [JsonConverter(typeof(ExpandableFieldConverter<Invoice>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("latest_invoice")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Invoice>))]
+#endif
         internal ExpandableField<Invoice> InternalLatestInvoice { get; set; }
         #endregion
 
@@ -396,6 +537,9 @@ public Invoice LatestInvoice
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -404,6 +548,9 @@ public Invoice LatestInvoice
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -412,6 +559,10 @@ public Invoice LatestInvoice
         /// </summary>
         [JsonProperty("next_pending_invoice_item_invoice")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("next_pending_invoice_item_invoice")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? NextPendingInvoiceItemInvoice { get; set; }
 
         #region Expandable OnBehalfOf
@@ -422,6 +573,9 @@ public Invoice LatestInvoice
         /// subscription. See the Connect documentation for details.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string OnBehalfOfId
         {
             get => this.InternalOnBehalfOf?.Id;
@@ -436,6 +590,9 @@ public string OnBehalfOfId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account OnBehalfOf
         {
             get => this.InternalOnBehalfOf?.ExpandedObject;
@@ -444,6 +601,10 @@ public Account OnBehalfOf
 
         [JsonProperty("on_behalf_of")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalOnBehalfOf { get; set; }
         #endregion
 
@@ -454,12 +615,18 @@ public Account OnBehalfOf
         /// collection</a>.
         /// </summary>
         [JsonProperty("pause_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pause_collection")]
+#endif
         public SubscriptionPauseCollection PauseCollection { get; set; }
 
         /// <summary>
         /// Payment settings passed on to invoices created by the subscription.
         /// </summary>
         [JsonProperty("payment_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_settings")]
+#endif
         public SubscriptionPaymentSettings PaymentSettings { get; set; }
 
         /// <summary>
@@ -468,6 +635,9 @@ public Account OnBehalfOf
         /// invoice</a> for the given subscription at the specified interval.
         /// </summary>
         [JsonProperty("pending_invoice_item_interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pending_invoice_item_interval")]
+#endif
         public SubscriptionPendingInvoiceItemInterval PendingInvoiceItemInterval { get; set; }
 
         #region Expandable PendingSetupIntent
@@ -482,6 +652,9 @@ public Account OnBehalfOf
         /// Migration Guide</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string PendingSetupIntentId
         {
             get => this.InternalPendingSetupIntent?.Id;
@@ -500,6 +673,9 @@ public string PendingSetupIntentId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public SetupIntent PendingSetupIntent
         {
             get => this.InternalPendingSetupIntent?.ExpandedObject;
@@ -508,6 +684,10 @@ public SetupIntent PendingSetupIntent
 
         [JsonProperty("pending_setup_intent")]
         [JsonConverter(typeof(ExpandableFieldConverter<SetupIntent>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pending_setup_intent")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<SetupIntent>))]
+#endif
         internal ExpandableField<SetupIntent> InternalPendingSetupIntent { get; set; }
         #endregion
 
@@ -517,6 +697,9 @@ public SetupIntent PendingSetupIntent
         /// that will be applied to the subscription once the <c>latest_invoice</c> has been paid.
         /// </summary>
         [JsonProperty("pending_update")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pending_update")]
+#endif
         public SubscriptionPendingUpdate PendingUpdate { get; set; }
 
         #region Expandable Schedule
@@ -526,6 +709,9 @@ public SetupIntent PendingSetupIntent
         /// The schedule attached to the subscription.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ScheduleId
         {
             get => this.InternalSchedule?.Id;
@@ -539,6 +725,9 @@ public string ScheduleId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public SubscriptionSchedule Schedule
         {
             get => this.InternalSchedule?.ExpandedObject;
@@ -547,6 +736,10 @@ public SubscriptionSchedule Schedule
 
         [JsonProperty("schedule")]
         [JsonConverter(typeof(ExpandableFieldConverter<SubscriptionSchedule>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("schedule")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<SubscriptionSchedule>))]
+#endif
         internal ExpandableField<SubscriptionSchedule> InternalSchedule { get; set; }
         #endregion
 
@@ -556,6 +749,10 @@ public SubscriptionSchedule Schedule
         /// </summary>
         [JsonProperty("start_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("start_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime StartDate { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -597,6 +794,9 @@ public SubscriptionSchedule Schedule
         /// <c>past_due</c>, <c>paused</c>, <c>trialing</c>, or <c>unpaid</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         #region Expandable TestClock
@@ -606,6 +806,9 @@ public SubscriptionSchedule Schedule
         /// ID of the test clock this subscription belongs to.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string TestClockId
         {
             get => this.InternalTestClock?.Id;
@@ -619,6 +822,9 @@ public string TestClockId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public TestHelpers.TestClock TestClock
         {
             get => this.InternalTestClock?.ExpandedObject;
@@ -627,6 +833,10 @@ public TestHelpers.TestClock TestClock
 
         [JsonProperty("test_clock")]
         [JsonConverter(typeof(ExpandableFieldConverter<TestHelpers.TestClock>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("test_clock")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<TestHelpers.TestClock>))]
+#endif
         internal ExpandableField<TestHelpers.TestClock> InternalTestClock { get; set; }
         #endregion
 
@@ -636,6 +846,9 @@ public TestHelpers.TestClock TestClock
         /// subscription's invoices.
         /// </summary>
         [JsonProperty("transfer_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_data")]
+#endif
         public SubscriptionTransferData TransferData { get; set; }
 
         /// <summary>
@@ -643,12 +856,19 @@ public TestHelpers.TestClock TestClock
         /// </summary>
         [JsonProperty("trial_end")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_end")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? TrialEnd { get; set; }
 
         /// <summary>
         /// Settings related to subscription trials.
         /// </summary>
         [JsonProperty("trial_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_settings")]
+#endif
         public SubscriptionTrialSettings TrialSettings { get; set; }
 
         /// <summary>
@@ -656,6 +876,10 @@ public TestHelpers.TestClock TestClock
         /// </summary>
         [JsonProperty("trial_start")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_start")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? TrialStart { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Subscriptions/SubscriptionAutomaticTax.cs b/src/Stripe.net/Entities/Subscriptions/SubscriptionAutomaticTax.cs
index 2d0b1369e4..e0fa655bf4 100644
--- a/src/Stripe.net/Entities/Subscriptions/SubscriptionAutomaticTax.cs
+++ b/src/Stripe.net/Entities/Subscriptions/SubscriptionAutomaticTax.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionAutomaticTax : StripeEntity<SubscriptionAutomaticTax>
     {
@@ -9,12 +12,18 @@ public class SubscriptionAutomaticTax : StripeEntity<SubscriptionAutomaticTax>
         /// If Stripe disabled automatic tax, this enum describes why.
         /// </summary>
         [JsonProperty("disabled_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("disabled_reason")]
+#endif
         public string DisabledReason { get; set; }
 
         /// <summary>
         /// Whether Stripe automatically computes tax on this subscription.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool Enabled { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class SubscriptionAutomaticTax : StripeEntity<SubscriptionAutomaticTax>
         /// transaction is returned in the report of the connected account.
         /// </summary>
         [JsonProperty("liability")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("liability")]
+#endif
         public SubscriptionAutomaticTaxLiability Liability { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Subscriptions/SubscriptionAutomaticTaxLiability.cs b/src/Stripe.net/Entities/Subscriptions/SubscriptionAutomaticTaxLiability.cs
index 564725c680..abe7e574ea 100644
--- a/src/Stripe.net/Entities/Subscriptions/SubscriptionAutomaticTaxLiability.cs
+++ b/src/Stripe.net/Entities/Subscriptions/SubscriptionAutomaticTaxLiability.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SubscriptionAutomaticTaxLiability : StripeEntity<SubscriptionAutomaticTaxLiability>
     {
         #region Expandable Account
@@ -13,6 +19,9 @@ public class SubscriptionAutomaticTaxLiability : StripeEntity<SubscriptionAutoma
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AccountId
         {
             get => this.InternalAccount?.Id;
@@ -26,6 +35,9 @@ public string AccountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Account
         {
             get => this.InternalAccount?.ExpandedObject;
@@ -34,6 +46,10 @@ public Account Account
 
         [JsonProperty("account")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalAccount { get; set; }
         #endregion
 
@@ -42,6 +58,9 @@ public Account Account
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Subscriptions/SubscriptionBillingCycleAnchorConfig.cs b/src/Stripe.net/Entities/Subscriptions/SubscriptionBillingCycleAnchorConfig.cs
index 767eba1328..833601c523 100644
--- a/src/Stripe.net/Entities/Subscriptions/SubscriptionBillingCycleAnchorConfig.cs
+++ b/src/Stripe.net/Entities/Subscriptions/SubscriptionBillingCycleAnchorConfig.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionBillingCycleAnchorConfig : StripeEntity<SubscriptionBillingCycleAnchorConfig>
     {
@@ -9,30 +12,45 @@ public class SubscriptionBillingCycleAnchorConfig : StripeEntity<SubscriptionBil
         /// The day of the month of the billing_cycle_anchor.
         /// </summary>
         [JsonProperty("day_of_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("day_of_month")]
+#endif
         public long DayOfMonth { get; set; }
 
         /// <summary>
         /// The hour of the day of the billing_cycle_anchor.
         /// </summary>
         [JsonProperty("hour")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hour")]
+#endif
         public long? Hour { get; set; }
 
         /// <summary>
         /// The minute of the hour of the billing_cycle_anchor.
         /// </summary>
         [JsonProperty("minute")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("minute")]
+#endif
         public long? Minute { get; set; }
 
         /// <summary>
         /// The month to start full cycle billing periods.
         /// </summary>
         [JsonProperty("month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("month")]
+#endif
         public long? Month { get; set; }
 
         /// <summary>
         /// The second of the minute of the billing_cycle_anchor.
         /// </summary>
         [JsonProperty("second")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("second")]
+#endif
         public long? Second { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Subscriptions/SubscriptionBillingThresholds.cs b/src/Stripe.net/Entities/Subscriptions/SubscriptionBillingThresholds.cs
index c84f8d89b4..b243bff262 100644
--- a/src/Stripe.net/Entities/Subscriptions/SubscriptionBillingThresholds.cs
+++ b/src/Stripe.net/Entities/Subscriptions/SubscriptionBillingThresholds.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionBillingThresholds : StripeEntity<SubscriptionBillingThresholds>
     {
@@ -9,6 +12,9 @@ public class SubscriptionBillingThresholds : StripeEntity<SubscriptionBillingThr
         /// Monetary threshold that triggers the subscription to create an invoice.
         /// </summary>
         [JsonProperty("amount_gte")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_gte")]
+#endif
         public long? AmountGte { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class SubscriptionBillingThresholds : StripeEntity<SubscriptionBillingThr
         /// <c>aggregate_usage=last_ever</c>.
         /// </summary>
         [JsonProperty("reset_billing_cycle_anchor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reset_billing_cycle_anchor")]
+#endif
         public bool? ResetBillingCycleAnchor { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Subscriptions/SubscriptionCancellationDetails.cs b/src/Stripe.net/Entities/Subscriptions/SubscriptionCancellationDetails.cs
index 428b03b445..0932e208bc 100644
--- a/src/Stripe.net/Entities/Subscriptions/SubscriptionCancellationDetails.cs
+++ b/src/Stripe.net/Entities/Subscriptions/SubscriptionCancellationDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionCancellationDetails : StripeEntity<SubscriptionCancellationDetails>
     {
@@ -10,6 +13,9 @@ public class SubscriptionCancellationDetails : StripeEntity<SubscriptionCancella
         /// was canceled explicitly by the user.
         /// </summary>
         [JsonProperty("comment")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("comment")]
+#endif
         public string Comment { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class SubscriptionCancellationDetails : StripeEntity<SubscriptionCancella
         /// <c>unused</c>.
         /// </summary>
         [JsonProperty("feedback")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("feedback")]
+#endif
         public string Feedback { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class SubscriptionCancellationDetails : StripeEntity<SubscriptionCancella
         /// <c>payment_failed</c>.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Subscriptions/SubscriptionInvoiceSettings.cs b/src/Stripe.net/Entities/Subscriptions/SubscriptionInvoiceSettings.cs
index 458f6f1ea8..323de92da1 100644
--- a/src/Stripe.net/Entities/Subscriptions/SubscriptionInvoiceSettings.cs
+++ b/src/Stripe.net/Entities/Subscriptions/SubscriptionInvoiceSettings.cs
@@ -5,7 +5,13 @@ namespace Stripe
     using System.Linq;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SubscriptionInvoiceSettings : StripeEntity<SubscriptionInvoiceSettings>
     {
         #region Expandable AccountTaxIds
@@ -16,6 +22,9 @@ public class SubscriptionInvoiceSettings : StripeEntity<SubscriptionInvoiceSetti
         /// by the subscription.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public List<string> AccountTaxIdIds
         {
             get => this.InternalAccountTaxIds?.Select((x) => x.Id).ToList();
@@ -30,6 +39,9 @@ public List<string> AccountTaxIdIds
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public List<TaxId> AccountTaxIds
         {
             get => this.InternalAccountTaxIds?.Select((x) => x.ExpandedObject).ToList();
@@ -37,10 +49,16 @@ public List<TaxId> AccountTaxIds
         }
 
         [JsonProperty("account_tax_ids", ItemConverterType = typeof(ExpandableFieldConverter<TaxId>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_tax_ids")]
+#endif
         internal List<ExpandableField<TaxId>> InternalAccountTaxIds { get; set; }
         #endregion
 
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public SubscriptionInvoiceSettingsIssuer Issuer { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Subscriptions/SubscriptionInvoiceSettingsIssuer.cs b/src/Stripe.net/Entities/Subscriptions/SubscriptionInvoiceSettingsIssuer.cs
index 0f95aca601..3fdf82300a 100644
--- a/src/Stripe.net/Entities/Subscriptions/SubscriptionInvoiceSettingsIssuer.cs
+++ b/src/Stripe.net/Entities/Subscriptions/SubscriptionInvoiceSettingsIssuer.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SubscriptionInvoiceSettingsIssuer : StripeEntity<SubscriptionInvoiceSettingsIssuer>
     {
         #region Expandable Account
@@ -13,6 +19,9 @@ public class SubscriptionInvoiceSettingsIssuer : StripeEntity<SubscriptionInvoic
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AccountId
         {
             get => this.InternalAccount?.Id;
@@ -26,6 +35,9 @@ public string AccountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Account
         {
             get => this.InternalAccount?.ExpandedObject;
@@ -34,6 +46,10 @@ public Account Account
 
         [JsonProperty("account")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalAccount { get; set; }
         #endregion
 
@@ -42,6 +58,9 @@ public Account Account
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Subscriptions/SubscriptionPauseCollection.cs b/src/Stripe.net/Entities/Subscriptions/SubscriptionPauseCollection.cs
index 71c2f6a480..015308fec8 100644
--- a/src/Stripe.net/Entities/Subscriptions/SubscriptionPauseCollection.cs
+++ b/src/Stripe.net/Entities/Subscriptions/SubscriptionPauseCollection.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPauseCollection : StripeEntity<SubscriptionPauseCollection>
     {
@@ -13,6 +16,9 @@ public class SubscriptionPauseCollection : StripeEntity<SubscriptionPauseCollect
         /// One of: <c>keep_as_draft</c>, <c>mark_uncollectible</c>, or <c>void</c>.
         /// </summary>
         [JsonProperty("behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("behavior")]
+#endif
         public string Behavior { get; set; }
 
         /// <summary>
@@ -20,6 +26,10 @@ public class SubscriptionPauseCollection : StripeEntity<SubscriptionPauseCollect
         /// </summary>
         [JsonProperty("resumes_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("resumes_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ResumesAt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettings.cs b/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettings.cs
index 2e3d588988..64d1d808b2 100644
--- a/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettings.cs
+++ b/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettings.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPaymentSettings : StripeEntity<SubscriptionPaymentSettings>
     {
@@ -11,6 +14,9 @@ public class SubscriptionPaymentSettings : StripeEntity<SubscriptionPaymentSetti
         /// subscription.
         /// </summary>
         [JsonProperty("payment_method_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_options")]
+#endif
         public SubscriptionPaymentSettingsPaymentMethodOptions PaymentMethodOptions { get; set; }
 
         /// <summary>
@@ -30,6 +36,9 @@ public class SubscriptionPaymentSettings : StripeEntity<SubscriptionPaymentSetti
         /// <c>sofort</c>, <c>swish</c>, <c>us_bank_account</c>, or <c>wechat_pay</c>.
         /// </summary>
         [JsonProperty("payment_method_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_types")]
+#endif
         public List<string> PaymentMethodTypes { get; set; }
 
         /// <summary>
@@ -38,6 +47,9 @@ public class SubscriptionPaymentSettings : StripeEntity<SubscriptionPaymentSetti
         /// One of: <c>off</c>, or <c>on_subscription</c>.
         /// </summary>
         [JsonProperty("save_default_payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("save_default_payment_method")]
+#endif
         public string SaveDefaultPaymentMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptions.cs b/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptions.cs
index ad9778e2f9..37734497fa 100644
--- a/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptions.cs
+++ b/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPaymentSettingsPaymentMethodOptions : StripeEntity<SubscriptionPaymentSettingsPaymentMethodOptions>
     {
@@ -10,6 +13,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptions : StripeEntity<Subs
         /// options to pass to invoices created by the subscription.
         /// </summary>
         [JsonProperty("acss_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acss_debit")]
+#endif
         public SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebit AcssDebit { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptions : StripeEntity<Subs
         /// invoices created by the subscription.
         /// </summary>
         [JsonProperty("bancontact")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bancontact")]
+#endif
         public SubscriptionPaymentSettingsPaymentMethodOptionsBancontact Bancontact { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptions : StripeEntity<Subs
         /// created by the subscription.
         /// </summary>
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public SubscriptionPaymentSettingsPaymentMethodOptionsCard Card { get; set; }
 
         /// <summary>
@@ -31,6 +43,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptions : StripeEntity<Subs
         /// invoices created by the subscription.
         /// </summary>
         [JsonProperty("customer_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_balance")]
+#endif
         public SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalance CustomerBalance { get; set; }
 
         /// <summary>
@@ -38,6 +53,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptions : StripeEntity<Subs
         /// invoices created by the subscription.
         /// </summary>
         [JsonProperty("konbini")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("konbini")]
+#endif
         public SubscriptionPaymentSettingsPaymentMethodOptionsKonbini Konbini { get; set; }
 
         /// <summary>
@@ -45,6 +63,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptions : StripeEntity<Subs
         /// pass to invoices created by the subscription.
         /// </summary>
         [JsonProperty("sepa_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_debit")]
+#endif
         public SubscriptionPaymentSettingsPaymentMethodOptionsSepaDebit SepaDebit { get; set; }
 
         /// <summary>
@@ -52,6 +73,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptions : StripeEntity<Subs
         /// to invoices created by the subscription.
         /// </summary>
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccount UsBankAccount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebit.cs b/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebit.cs
index 63b66e1263..a0659e1166 100644
--- a/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebit.cs
+++ b/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebit.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebit : StripeEntity<SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebit>
     {
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebitMandateOptions MandateOptions { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebit : StripeEn
         /// One of: <c>automatic</c>, <c>instant</c>, or <c>microdeposits</c>.
         /// </summary>
         [JsonProperty("verification_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification_method")]
+#endif
         public string VerificationMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebitMandateOptions.cs b/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebitMandateOptions.cs
index 63dc6a580e..f2d52de433 100644
--- a/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebitMandateOptions.cs
+++ b/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebitMandateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebitMandateOptions : StripeEntity<SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebitMandateOptions>
     {
@@ -10,6 +13,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebitMandateOpti
         /// One of: <c>business</c>, or <c>personal</c>.
         /// </summary>
         [JsonProperty("transaction_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_type")]
+#endif
         public string TransactionType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsBancontact.cs b/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsBancontact.cs
index 358a31dd1b..bfa8367e91 100644
--- a/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsBancontact.cs
+++ b/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsBancontact.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPaymentSettingsPaymentMethodOptionsBancontact : StripeEntity<SubscriptionPaymentSettingsPaymentMethodOptionsBancontact>
     {
@@ -11,6 +14,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsBancontact : StripeE
         /// One of: <c>de</c>, <c>en</c>, <c>fr</c>, or <c>nl</c>.
         /// </summary>
         [JsonProperty("preferred_language")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_language")]
+#endif
         public string PreferredLanguage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCard.cs b/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCard.cs
index 7c22f03c19..126be9dc90 100644
--- a/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCard.cs
+++ b/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCard.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPaymentSettingsPaymentMethodOptionsCard : StripeEntity<SubscriptionPaymentSettingsPaymentMethodOptionsCard>
     {
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public SubscriptionPaymentSettingsPaymentMethodOptionsCardMandateOptions MandateOptions { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsCard : StripeEntity<
         /// <c>mastercard</c>, <c>unionpay</c>, <c>unknown</c>, or <c>visa</c>.
         /// </summary>
         [JsonProperty("network")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network")]
+#endif
         public string Network { get; set; }
 
         /// <summary>
@@ -30,6 +39,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsCard : StripeEntity<
         /// One of: <c>any</c>, <c>automatic</c>, or <c>challenge</c>.
         /// </summary>
         [JsonProperty("request_three_d_secure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_three_d_secure")]
+#endif
         public string RequestThreeDSecure { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCardMandateOptions.cs b/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCardMandateOptions.cs
index d677818d14..5779802d46 100644
--- a/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCardMandateOptions.cs
+++ b/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCardMandateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPaymentSettingsPaymentMethodOptionsCardMandateOptions : StripeEntity<SubscriptionPaymentSettingsPaymentMethodOptionsCardMandateOptions>
     {
@@ -9,6 +12,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsCardMandateOptions :
         /// Amount to be charged for future payments.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsCardMandateOptions :
         /// One of: <c>fixed</c>, or <c>maximum</c>.
         /// </summary>
         [JsonProperty("amount_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_type")]
+#endif
         public string AmountType { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsCardMandateOptions :
         /// customer.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalance.cs b/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalance.cs
index 7240fca7b3..d21da60f48 100644
--- a/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalance.cs
+++ b/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalance.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalance : StripeEntity<SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalance>
     {
         [JsonProperty("bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_transfer")]
+#endif
         public SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransfer BankTransfer { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalance : St
         /// balance. Permitted values include: <c>bank_transfer</c>.
         /// </summary>
         [JsonProperty("funding_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding_type")]
+#endif
         public string FundingType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransfer.cs b/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransfer.cs
index 3ce30b1842..9d81faf254 100644
--- a/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransfer.cs
+++ b/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransfer.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransfer : StripeEntity<SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransfer>
     {
         [JsonProperty("eu_bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eu_bank_transfer")]
+#endif
         public SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfer EuBankTransfer { get; set; }
 
         /// <summary>
@@ -14,6 +20,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankT
         /// <c>mx_bank_transfer</c>, or <c>us_bank_transfer</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfer.cs b/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfer.cs
index 875ad840d2..dc90703422 100644
--- a/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfer.cs
+++ b/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfer.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfer : StripeEntity<SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfer>
     {
@@ -11,6 +14,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankT
         /// One of: <c>BE</c>, <c>DE</c>, <c>ES</c>, <c>FR</c>, <c>IE</c>, or <c>NL</c>.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccount.cs b/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccount.cs
index be8cc5fca3..4bad637318 100644
--- a/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccount.cs
+++ b/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccount.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccount : StripeEntity<SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccount>
     {
         [JsonProperty("financial_connections")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_connections")]
+#endif
         public SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnections FinancialConnections { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccount : Stri
         /// One of: <c>automatic</c>, <c>instant</c>, or <c>microdeposits</c>.
         /// </summary>
         [JsonProperty("verification_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification_method")]
+#endif
         public string VerificationMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnections.cs b/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnections.cs
index 2642db7862..e8cc96ff16 100644
--- a/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnections.cs
+++ b/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnections.cs
@@ -3,10 +3,16 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnections : StripeEntity<SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnections>
     {
         [JsonProperty("filters")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("filters")]
+#endif
         public SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters Filters { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinanci
         /// <c>transactions</c>.
         /// </summary>
         [JsonProperty("permissions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("permissions")]
+#endif
         public List<string> Permissions { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinanci
         /// One of: <c>balances</c>, <c>ownership</c>, or <c>transactions</c>.
         /// </summary>
         [JsonProperty("prefetch")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("prefetch")]
+#endif
         public List<string> Prefetch { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters.cs b/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters.cs
index d37e92e20b..c606135ab2 100644
--- a/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters.cs
+++ b/src/Stripe.net/Entities/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters : StripeEntity<SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsFilters>
     {
@@ -12,6 +15,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinanci
         /// One of: <c>checking</c>, or <c>savings</c>.
         /// </summary>
         [JsonProperty("account_subcategories")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_subcategories")]
+#endif
         public List<string> AccountSubcategories { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Subscriptions/SubscriptionPendingInvoiceItemInterval.cs b/src/Stripe.net/Entities/Subscriptions/SubscriptionPendingInvoiceItemInterval.cs
index 7a30f9b78b..5811f35224 100644
--- a/src/Stripe.net/Entities/Subscriptions/SubscriptionPendingInvoiceItemInterval.cs
+++ b/src/Stripe.net/Entities/Subscriptions/SubscriptionPendingInvoiceItemInterval.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPendingInvoiceItemInterval : StripeEntity<SubscriptionPendingInvoiceItemInterval>
     {
@@ -11,6 +14,9 @@ public class SubscriptionPendingInvoiceItemInterval : StripeEntity<SubscriptionP
         /// One of: <c>day</c>, <c>month</c>, <c>week</c>, or <c>year</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class SubscriptionPendingInvoiceItemInterval : StripeEntity<SubscriptionP
         /// year, 12 months, or 52 weeks).
         /// </summary>
         [JsonProperty("interval_count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_count")]
+#endif
         public long IntervalCount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Subscriptions/SubscriptionPendingUpdate.cs b/src/Stripe.net/Entities/Subscriptions/SubscriptionPendingUpdate.cs
index 7f36089552..a54a85c7f6 100644
--- a/src/Stripe.net/Entities/Subscriptions/SubscriptionPendingUpdate.cs
+++ b/src/Stripe.net/Entities/Subscriptions/SubscriptionPendingUpdate.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPendingUpdate : StripeEntity<SubscriptionPendingUpdate>
     {
@@ -15,6 +18,10 @@ public class SubscriptionPendingUpdate : StripeEntity<SubscriptionPendingUpdate>
         /// </summary>
         [JsonProperty("billing_cycle_anchor")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_cycle_anchor")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? BillingCycleAnchor { get; set; }
 
         /// <summary>
@@ -23,6 +30,10 @@ public class SubscriptionPendingUpdate : StripeEntity<SubscriptionPendingUpdate>
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime ExpiresAt { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -30,6 +41,9 @@ public class SubscriptionPendingUpdate : StripeEntity<SubscriptionPendingUpdate>
         /// is applied.
         /// </summary>
         [JsonProperty("subscription_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_items")]
+#endif
         public List<SubscriptionItem> SubscriptionItems { get; set; }
 
         /// <summary>
@@ -38,6 +52,10 @@ public class SubscriptionPendingUpdate : StripeEntity<SubscriptionPendingUpdate>
         /// </summary>
         [JsonProperty("trial_end")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_end")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? TrialEnd { get; set; }
 
         /// <summary>
@@ -48,6 +66,9 @@ public class SubscriptionPendingUpdate : StripeEntity<SubscriptionPendingUpdate>
         /// periods on subscriptions</a> to learn more.
         /// </summary>
         [JsonProperty("trial_from_plan")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_from_plan")]
+#endif
         public bool? TrialFromPlan { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Subscriptions/SubscriptionTransferData.cs b/src/Stripe.net/Entities/Subscriptions/SubscriptionTransferData.cs
index c4367e8fa9..6712f4986a 100644
--- a/src/Stripe.net/Entities/Subscriptions/SubscriptionTransferData.cs
+++ b/src/Stripe.net/Entities/Subscriptions/SubscriptionTransferData.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SubscriptionTransferData : StripeEntity<SubscriptionTransferData>
     {
         /// <summary>
@@ -13,6 +19,9 @@ public class SubscriptionTransferData : StripeEntity<SubscriptionTransferData>
         /// destination.
         /// </summary>
         [JsonProperty("amount_percent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_percent")]
+#endif
         public decimal? AmountPercent { get; set; }
 
         #region Expandable Destination
@@ -22,6 +31,9 @@ public class SubscriptionTransferData : StripeEntity<SubscriptionTransferData>
         /// The account where funds from the payment will be transferred to upon payment success.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DestinationId
         {
             get => this.InternalDestination?.Id;
@@ -35,6 +47,9 @@ public string DestinationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Destination
         {
             get => this.InternalDestination?.ExpandedObject;
@@ -43,6 +58,10 @@ public Account Destination
 
         [JsonProperty("destination")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalDestination { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Subscriptions/SubscriptionTrialSettings.cs b/src/Stripe.net/Entities/Subscriptions/SubscriptionTrialSettings.cs
index 9fbf086f72..b27af1c020 100644
--- a/src/Stripe.net/Entities/Subscriptions/SubscriptionTrialSettings.cs
+++ b/src/Stripe.net/Entities/Subscriptions/SubscriptionTrialSettings.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionTrialSettings : StripeEntity<SubscriptionTrialSettings>
     {
@@ -9,6 +12,9 @@ public class SubscriptionTrialSettings : StripeEntity<SubscriptionTrialSettings>
         /// Defines how a subscription behaves when a free trial ends.
         /// </summary>
         [JsonProperty("end_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end_behavior")]
+#endif
         public SubscriptionTrialSettingsEndBehavior EndBehavior { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Subscriptions/SubscriptionTrialSettingsEndBehavior.cs b/src/Stripe.net/Entities/Subscriptions/SubscriptionTrialSettingsEndBehavior.cs
index 967459db12..3f2c71d627 100644
--- a/src/Stripe.net/Entities/Subscriptions/SubscriptionTrialSettingsEndBehavior.cs
+++ b/src/Stripe.net/Entities/Subscriptions/SubscriptionTrialSettingsEndBehavior.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionTrialSettingsEndBehavior : StripeEntity<SubscriptionTrialSettingsEndBehavior>
     {
@@ -11,6 +14,9 @@ public class SubscriptionTrialSettingsEndBehavior : StripeEntity<SubscriptionTri
         /// One of: <c>cancel</c>, <c>create_invoice</c>, or <c>pause</c>.
         /// </summary>
         [JsonProperty("missing_payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("missing_payment_method")]
+#endif
         public string MissingPaymentMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/CalculationLineItems/CalculationLineItem.cs b/src/Stripe.net/Entities/Tax/CalculationLineItems/CalculationLineItem.cs
index e9cce23a85..6da5717664 100644
--- a/src/Stripe.net/Entities/Tax/CalculationLineItems/CalculationLineItem.cs
+++ b/src/Stripe.net/Entities/Tax/CalculationLineItems/CalculationLineItem.cs
@@ -3,6 +3,9 @@ namespace Stripe.Tax
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CalculationLineItem : StripeEntity<CalculationLineItem>, IHasId, IHasObject
     {
@@ -10,12 +13,18 @@ public class CalculationLineItem : StripeEntity<CalculationLineItem>, IHasId, IH
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class CalculationLineItem : StripeEntity<CalculationLineItem>, IHasId, IH
         /// calculated on top of this amount.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -32,6 +44,9 @@ public class CalculationLineItem : StripeEntity<CalculationLineItem>, IHasId, IH
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("amount_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_tax")]
+#endif
         public long AmountTax { get; set; }
 
         /// <summary>
@@ -39,12 +54,18 @@ public class CalculationLineItem : StripeEntity<CalculationLineItem>, IHasId, IH
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
         /// The ID of an existing <a href="https://stripe.com/docs/api/products/object">Product</a>.
         /// </summary>
         [JsonProperty("product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product")]
+#endif
         public string Product { get; set; }
 
         /// <summary>
@@ -52,12 +73,18 @@ public class CalculationLineItem : StripeEntity<CalculationLineItem>, IHasId, IH
         /// reversed.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long Quantity { get; set; }
 
         /// <summary>
         /// A custom identifier for this line item.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
@@ -66,12 +93,18 @@ public class CalculationLineItem : StripeEntity<CalculationLineItem>, IHasId, IH
         /// One of: <c>exclusive</c>, or <c>inclusive</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
         /// Detailed account of taxes relevant to this line item.
         /// </summary>
         [JsonProperty("tax_breakdown")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_breakdown")]
+#endif
         public List<CalculationLineItemTaxBreakdown> TaxBreakdown { get; set; }
 
         /// <summary>
@@ -79,6 +112,9 @@ public class CalculationLineItem : StripeEntity<CalculationLineItem>, IHasId, IH
         /// resource.
         /// </summary>
         [JsonProperty("tax_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_code")]
+#endif
         public string TaxCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/CalculationLineItems/CalculationLineItemTaxBreakdown.cs b/src/Stripe.net/Entities/Tax/CalculationLineItems/CalculationLineItemTaxBreakdown.cs
index 8bb41d462c..619f1b65c0 100644
--- a/src/Stripe.net/Entities/Tax/CalculationLineItems/CalculationLineItemTaxBreakdown.cs
+++ b/src/Stripe.net/Entities/Tax/CalculationLineItems/CalculationLineItemTaxBreakdown.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CalculationLineItemTaxBreakdown : StripeEntity<CalculationLineItemTaxBreakdown>
     {
@@ -10,9 +13,15 @@ public class CalculationLineItemTaxBreakdown : StripeEntity<CalculationLineItemT
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         [JsonProperty("jurisdiction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("jurisdiction")]
+#endif
         public CalculationLineItemTaxBreakdownJurisdiction Jurisdiction { get; set; }
 
         /// <summary>
@@ -21,6 +30,9 @@ public class CalculationLineItemTaxBreakdown : StripeEntity<CalculationLineItemT
         /// One of: <c>destination</c>, or <c>origin</c>.
         /// </summary>
         [JsonProperty("sourcing")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sourcing")]
+#endif
         public string Sourcing { get; set; }
 
         /// <summary>
@@ -28,6 +40,9 @@ public class CalculationLineItemTaxBreakdown : StripeEntity<CalculationLineItemT
         /// not imposed, for example if the product is exempt from tax.
         /// </summary>
         [JsonProperty("tax_rate_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rate_details")]
+#endif
         public CalculationLineItemTaxBreakdownTaxRateDetails TaxRateDetails { get; set; }
 
         /// <summary>
@@ -40,6 +55,9 @@ public class CalculationLineItemTaxBreakdown : StripeEntity<CalculationLineItemT
         /// <c>standard_rated</c>, <c>taxable_basis_reduced</c>, or <c>zero_rated</c>.
         /// </summary>
         [JsonProperty("taxability_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxability_reason")]
+#endif
         public string TaxabilityReason { get; set; }
 
         /// <summary>
@@ -47,6 +65,9 @@ public class CalculationLineItemTaxBreakdown : StripeEntity<CalculationLineItemT
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("taxable_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxable_amount")]
+#endif
         public long TaxableAmount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/CalculationLineItems/CalculationLineItemTaxBreakdownJurisdiction.cs b/src/Stripe.net/Entities/Tax/CalculationLineItems/CalculationLineItemTaxBreakdownJurisdiction.cs
index 31e0151ee3..c847961632 100644
--- a/src/Stripe.net/Entities/Tax/CalculationLineItems/CalculationLineItemTaxBreakdownJurisdiction.cs
+++ b/src/Stripe.net/Entities/Tax/CalculationLineItems/CalculationLineItemTaxBreakdownJurisdiction.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CalculationLineItemTaxBreakdownJurisdiction : StripeEntity<CalculationLineItemTaxBreakdownJurisdiction>
     {
@@ -10,12 +13,18 @@ public class CalculationLineItemTaxBreakdownJurisdiction : StripeEntity<Calculat
         /// 3166-1 alpha-2</a>).
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
         /// A human-readable name for the jurisdiction imposing the tax.
         /// </summary>
         [JsonProperty("display_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_name")]
+#endif
         public string DisplayName { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class CalculationLineItemTaxBreakdownJurisdiction : StripeEntity<Calculat
         /// One of: <c>city</c>, <c>country</c>, <c>county</c>, <c>district</c>, or <c>state</c>.
         /// </summary>
         [JsonProperty("level")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("level")]
+#endif
         public string Level { get; set; }
 
         /// <summary>
@@ -30,6 +42,9 @@ public class CalculationLineItemTaxBreakdownJurisdiction : StripeEntity<Calculat
         /// without country prefix. For example, "NY" for New York, United States.
         /// </summary>
         [JsonProperty("state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("state")]
+#endif
         public string State { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/CalculationLineItems/CalculationLineItemTaxBreakdownTaxRateDetails.cs b/src/Stripe.net/Entities/Tax/CalculationLineItems/CalculationLineItemTaxBreakdownTaxRateDetails.cs
index ee45362f22..fbb1a256cf 100644
--- a/src/Stripe.net/Entities/Tax/CalculationLineItems/CalculationLineItemTaxBreakdownTaxRateDetails.cs
+++ b/src/Stripe.net/Entities/Tax/CalculationLineItems/CalculationLineItemTaxBreakdownTaxRateDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CalculationLineItemTaxBreakdownTaxRateDetails : StripeEntity<CalculationLineItemTaxBreakdownTaxRateDetails>
     {
@@ -10,12 +13,18 @@ public class CalculationLineItemTaxBreakdownTaxRateDetails : StripeEntity<Calcul
         /// "Local Sales and Use Tax", "Value-added tax (VAT)", or "Umsatzsteuer (USt.)".
         /// </summary>
         [JsonProperty("display_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_name")]
+#endif
         public string DisplayName { get; set; }
 
         /// <summary>
         /// The tax rate percentage as a string. For example, 8.5% is represented as "8.5".
         /// </summary>
         [JsonProperty("percentage_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentage_decimal")]
+#endif
         public string PercentageDecimal { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class CalculationLineItemTaxBreakdownTaxRateDetails : StripeEntity<Calcul
         /// <c>vat</c>.
         /// </summary>
         [JsonProperty("tax_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_type")]
+#endif
         public string TaxType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Calculations/Calculation.cs b/src/Stripe.net/Entities/Tax/Calculations/Calculation.cs
index 0822b3f3f4..a1cdb4e51a 100644
--- a/src/Stripe.net/Entities/Tax/Calculations/Calculation.cs
+++ b/src/Stripe.net/Entities/Tax/Calculations/Calculation.cs
@@ -5,6 +5,9 @@ namespace Stripe.Tax
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A Tax Calculation allows you to calculate the tax to collect from your customer.
@@ -18,12 +21,18 @@ public class Calculation : StripeEntity<Calculation>, IHasId, IHasObject
         /// Unique identifier for the calculation.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -31,6 +40,9 @@ public class Calculation : StripeEntity<Calculation>, IHasId, IHasObject
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("amount_total")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_total")]
+#endif
         public long AmountTotal { get; set; }
 
         /// <summary>
@@ -39,6 +51,9 @@ public class Calculation : StripeEntity<Calculation>, IHasId, IHasObject
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -46,9 +61,15 @@ public class Calculation : StripeEntity<Calculation>, IHasId, IHasObject
         /// href="https://stripe.com/docs/api/customers/object">Customer</a> used for the resource.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         [JsonProperty("customer_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_details")]
+#endif
         public CalculationCustomerDetails CustomerDetails { get; set; }
 
         /// <summary>
@@ -56,12 +77,19 @@ public class Calculation : StripeEntity<Calculation>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpiresAt { get; set; }
 
         /// <summary>
         /// The list of items the customer is purchasing.
         /// </summary>
         [JsonProperty("line_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line_items")]
+#endif
         public StripeList<CalculationLineItem> LineItems { get; set; }
 
         /// <summary>
@@ -69,36 +97,54 @@ public class Calculation : StripeEntity<Calculation>, IHasId, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
         /// The details of the ship from location, such as the address.
         /// </summary>
         [JsonProperty("ship_from_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ship_from_details")]
+#endif
         public CalculationShipFromDetails ShipFromDetails { get; set; }
 
         /// <summary>
         /// The shipping cost details for the calculation.
         /// </summary>
         [JsonProperty("shipping_cost")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_cost")]
+#endif
         public CalculationShippingCost ShippingCost { get; set; }
 
         /// <summary>
         /// The amount of tax to be collected on top of the line item prices.
         /// </summary>
         [JsonProperty("tax_amount_exclusive")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_amount_exclusive")]
+#endif
         public long TaxAmountExclusive { get; set; }
 
         /// <summary>
         /// The amount of tax already included in the line item prices.
         /// </summary>
         [JsonProperty("tax_amount_inclusive")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_amount_inclusive")]
+#endif
         public long TaxAmountInclusive { get; set; }
 
         /// <summary>
         /// Breakdown of individual tax amounts that add up to the total.
         /// </summary>
         [JsonProperty("tax_breakdown")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_breakdown")]
+#endif
         public List<CalculationTaxBreakdown> TaxBreakdown { get; set; }
 
         /// <summary>
@@ -107,6 +153,10 @@ public class Calculation : StripeEntity<Calculation>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("tax_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime TaxDate { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Calculations/CalculationCustomerDetails.cs b/src/Stripe.net/Entities/Tax/Calculations/CalculationCustomerDetails.cs
index 180f52cff0..cb653f7709 100644
--- a/src/Stripe.net/Entities/Tax/Calculations/CalculationCustomerDetails.cs
+++ b/src/Stripe.net/Entities/Tax/Calculations/CalculationCustomerDetails.cs
@@ -3,6 +3,9 @@ namespace Stripe.Tax
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CalculationCustomerDetails : StripeEntity<CalculationCustomerDetails>
     {
@@ -10,6 +13,9 @@ public class CalculationCustomerDetails : StripeEntity<CalculationCustomerDetail
         /// The customer's postal address (for example, home or business location).
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public CalculationCustomerDetailsAddress Address { get; set; }
 
         /// <summary>
@@ -17,18 +23,27 @@ public class CalculationCustomerDetails : StripeEntity<CalculationCustomerDetail
         /// One of: <c>billing</c>, or <c>shipping</c>.
         /// </summary>
         [JsonProperty("address_source")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_source")]
+#endif
         public string AddressSource { get; set; }
 
         /// <summary>
         /// The customer's IP address (IPv4 or IPv6).
         /// </summary>
         [JsonProperty("ip_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip_address")]
+#endif
         public string IpAddress { get; set; }
 
         /// <summary>
         /// The customer's tax IDs (for example, EU VAT numbers).
         /// </summary>
         [JsonProperty("tax_ids")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_ids")]
+#endif
         public List<CalculationCustomerDetailsTaxId> TaxIds { get; set; }
 
         /// <summary>
@@ -36,6 +51,9 @@ public class CalculationCustomerDetails : StripeEntity<CalculationCustomerDetail
         /// One of: <c>customer_exempt</c>, <c>none</c>, or <c>reverse_charge</c>.
         /// </summary>
         [JsonProperty("taxability_override")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxability_override")]
+#endif
         public string TaxabilityOverride { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Calculations/CalculationCustomerDetailsAddress.cs b/src/Stripe.net/Entities/Tax/Calculations/CalculationCustomerDetailsAddress.cs
index bbc45886c0..16f7a262de 100644
--- a/src/Stripe.net/Entities/Tax/Calculations/CalculationCustomerDetailsAddress.cs
+++ b/src/Stripe.net/Entities/Tax/Calculations/CalculationCustomerDetailsAddress.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CalculationCustomerDetailsAddress : StripeEntity<CalculationCustomerDetailsAddress>
     {
@@ -9,6 +12,9 @@ public class CalculationCustomerDetailsAddress : StripeEntity<CalculationCustome
         /// City, district, suburb, town, or village.
         /// </summary>
         [JsonProperty("city")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("city")]
+#endif
         public string City { get; set; }
 
         /// <summary>
@@ -16,24 +22,36 @@ public class CalculationCustomerDetailsAddress : StripeEntity<CalculationCustome
         /// 3166-1 alpha-2</a>).
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
         /// Address line 1 (e.g., street, PO Box, or company name).
         /// </summary>
         [JsonProperty("line1")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line1")]
+#endif
         public string Line1 { get; set; }
 
         /// <summary>
         /// Address line 2 (e.g., apartment, suite, unit, or building).
         /// </summary>
         [JsonProperty("line2")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line2")]
+#endif
         public string Line2 { get; set; }
 
         /// <summary>
         /// ZIP or postal code.
         /// </summary>
         [JsonProperty("postal_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("postal_code")]
+#endif
         public string PostalCode { get; set; }
 
         /// <summary>
@@ -41,6 +59,9 @@ public class CalculationCustomerDetailsAddress : StripeEntity<CalculationCustome
         /// subdivision code, without country prefix. Example: "NY" or "TX".
         /// </summary>
         [JsonProperty("state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("state")]
+#endif
         public string State { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Calculations/CalculationCustomerDetailsTaxId.cs b/src/Stripe.net/Entities/Tax/Calculations/CalculationCustomerDetailsTaxId.cs
index 363c0cce47..6aa809d361 100644
--- a/src/Stripe.net/Entities/Tax/Calculations/CalculationCustomerDetailsTaxId.cs
+++ b/src/Stripe.net/Entities/Tax/Calculations/CalculationCustomerDetailsTaxId.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CalculationCustomerDetailsTaxId : StripeEntity<CalculationCustomerDetailsTaxId>
     {
@@ -49,12 +52,18 @@ public class CalculationCustomerDetailsTaxId : StripeEntity<CalculationCustomerD
         /// <c>ve_rif</c>, <c>vn_tin</c>, <c>za_vat</c>, <c>zm_tin</c>, or <c>zw_tin</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
         /// The value of the tax ID.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Calculations/CalculationShipFromDetails.cs b/src/Stripe.net/Entities/Tax/Calculations/CalculationShipFromDetails.cs
index b83f5e75f4..a1a758fd21 100644
--- a/src/Stripe.net/Entities/Tax/Calculations/CalculationShipFromDetails.cs
+++ b/src/Stripe.net/Entities/Tax/Calculations/CalculationShipFromDetails.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CalculationShipFromDetails : StripeEntity<CalculationShipFromDetails>
     {
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public CalculationShipFromDetailsAddress Address { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Calculations/CalculationShipFromDetailsAddress.cs b/src/Stripe.net/Entities/Tax/Calculations/CalculationShipFromDetailsAddress.cs
index a8c6271cd6..2641e2bccc 100644
--- a/src/Stripe.net/Entities/Tax/Calculations/CalculationShipFromDetailsAddress.cs
+++ b/src/Stripe.net/Entities/Tax/Calculations/CalculationShipFromDetailsAddress.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CalculationShipFromDetailsAddress : StripeEntity<CalculationShipFromDetailsAddress>
     {
@@ -9,6 +12,9 @@ public class CalculationShipFromDetailsAddress : StripeEntity<CalculationShipFro
         /// City, district, suburb, town, or village.
         /// </summary>
         [JsonProperty("city")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("city")]
+#endif
         public string City { get; set; }
 
         /// <summary>
@@ -16,24 +22,36 @@ public class CalculationShipFromDetailsAddress : StripeEntity<CalculationShipFro
         /// 3166-1 alpha-2</a>).
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
         /// Address line 1 (e.g., street, PO Box, or company name).
         /// </summary>
         [JsonProperty("line1")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line1")]
+#endif
         public string Line1 { get; set; }
 
         /// <summary>
         /// Address line 2 (e.g., apartment, suite, unit, or building).
         /// </summary>
         [JsonProperty("line2")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line2")]
+#endif
         public string Line2 { get; set; }
 
         /// <summary>
         /// ZIP or postal code.
         /// </summary>
         [JsonProperty("postal_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("postal_code")]
+#endif
         public string PostalCode { get; set; }
 
         /// <summary>
@@ -41,6 +59,9 @@ public class CalculationShipFromDetailsAddress : StripeEntity<CalculationShipFro
         /// subdivision code, without country prefix. Example: "NY" or "TX".
         /// </summary>
         [JsonProperty("state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("state")]
+#endif
         public string State { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Calculations/CalculationShippingCost.cs b/src/Stripe.net/Entities/Tax/Calculations/CalculationShippingCost.cs
index 64cdfb96f0..8f8fd81b53 100644
--- a/src/Stripe.net/Entities/Tax/Calculations/CalculationShippingCost.cs
+++ b/src/Stripe.net/Entities/Tax/Calculations/CalculationShippingCost.cs
@@ -3,6 +3,9 @@ namespace Stripe.Tax
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CalculationShippingCost : StripeEntity<CalculationShippingCost>
     {
@@ -13,6 +16,9 @@ public class CalculationShippingCost : StripeEntity<CalculationShippingCost>
         /// calculated on top of this amount.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class CalculationShippingCost : StripeEntity<CalculationShippingCost>
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("amount_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_tax")]
+#endif
         public long AmountTax { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class CalculationShippingCost : StripeEntity<CalculationShippingCost>
         /// href="https://stripe.com/docs/api/shipping_rates/object">ShippingRate</a>.
         /// </summary>
         [JsonProperty("shipping_rate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_rate")]
+#endif
         public string ShippingRate { get; set; }
 
         /// <summary>
@@ -35,12 +47,18 @@ public class CalculationShippingCost : StripeEntity<CalculationShippingCost>
         /// One of: <c>exclusive</c>, or <c>inclusive</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
         /// Detailed account of taxes relevant to shipping cost.
         /// </summary>
         [JsonProperty("tax_breakdown")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_breakdown")]
+#endif
         public List<CalculationShippingCostTaxBreakdown> TaxBreakdown { get; set; }
 
         /// <summary>
@@ -48,6 +66,9 @@ public class CalculationShippingCost : StripeEntity<CalculationShippingCost>
         /// shipping.
         /// </summary>
         [JsonProperty("tax_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_code")]
+#endif
         public string TaxCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Calculations/CalculationShippingCostTaxBreakdown.cs b/src/Stripe.net/Entities/Tax/Calculations/CalculationShippingCostTaxBreakdown.cs
index ed6541a164..8e970a5641 100644
--- a/src/Stripe.net/Entities/Tax/Calculations/CalculationShippingCostTaxBreakdown.cs
+++ b/src/Stripe.net/Entities/Tax/Calculations/CalculationShippingCostTaxBreakdown.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CalculationShippingCostTaxBreakdown : StripeEntity<CalculationShippingCostTaxBreakdown>
     {
@@ -10,9 +13,15 @@ public class CalculationShippingCostTaxBreakdown : StripeEntity<CalculationShipp
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         [JsonProperty("jurisdiction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("jurisdiction")]
+#endif
         public CalculationShippingCostTaxBreakdownJurisdiction Jurisdiction { get; set; }
 
         /// <summary>
@@ -21,6 +30,9 @@ public class CalculationShippingCostTaxBreakdown : StripeEntity<CalculationShipp
         /// One of: <c>destination</c>, or <c>origin</c>.
         /// </summary>
         [JsonProperty("sourcing")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sourcing")]
+#endif
         public string Sourcing { get; set; }
 
         /// <summary>
@@ -28,6 +40,9 @@ public class CalculationShippingCostTaxBreakdown : StripeEntity<CalculationShipp
         /// not imposed, for example if the product is exempt from tax.
         /// </summary>
         [JsonProperty("tax_rate_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rate_details")]
+#endif
         public CalculationShippingCostTaxBreakdownTaxRateDetails TaxRateDetails { get; set; }
 
         /// <summary>
@@ -40,6 +55,9 @@ public class CalculationShippingCostTaxBreakdown : StripeEntity<CalculationShipp
         /// <c>standard_rated</c>, <c>taxable_basis_reduced</c>, or <c>zero_rated</c>.
         /// </summary>
         [JsonProperty("taxability_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxability_reason")]
+#endif
         public string TaxabilityReason { get; set; }
 
         /// <summary>
@@ -47,6 +65,9 @@ public class CalculationShippingCostTaxBreakdown : StripeEntity<CalculationShipp
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("taxable_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxable_amount")]
+#endif
         public long TaxableAmount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Calculations/CalculationShippingCostTaxBreakdownJurisdiction.cs b/src/Stripe.net/Entities/Tax/Calculations/CalculationShippingCostTaxBreakdownJurisdiction.cs
index b02b4fea62..377d76c17a 100644
--- a/src/Stripe.net/Entities/Tax/Calculations/CalculationShippingCostTaxBreakdownJurisdiction.cs
+++ b/src/Stripe.net/Entities/Tax/Calculations/CalculationShippingCostTaxBreakdownJurisdiction.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CalculationShippingCostTaxBreakdownJurisdiction : StripeEntity<CalculationShippingCostTaxBreakdownJurisdiction>
     {
@@ -10,12 +13,18 @@ public class CalculationShippingCostTaxBreakdownJurisdiction : StripeEntity<Calc
         /// 3166-1 alpha-2</a>).
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
         /// A human-readable name for the jurisdiction imposing the tax.
         /// </summary>
         [JsonProperty("display_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_name")]
+#endif
         public string DisplayName { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class CalculationShippingCostTaxBreakdownJurisdiction : StripeEntity<Calc
         /// One of: <c>city</c>, <c>country</c>, <c>county</c>, <c>district</c>, or <c>state</c>.
         /// </summary>
         [JsonProperty("level")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("level")]
+#endif
         public string Level { get; set; }
 
         /// <summary>
@@ -30,6 +42,9 @@ public class CalculationShippingCostTaxBreakdownJurisdiction : StripeEntity<Calc
         /// without country prefix. For example, "NY" for New York, United States.
         /// </summary>
         [JsonProperty("state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("state")]
+#endif
         public string State { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Calculations/CalculationShippingCostTaxBreakdownTaxRateDetails.cs b/src/Stripe.net/Entities/Tax/Calculations/CalculationShippingCostTaxBreakdownTaxRateDetails.cs
index 81343738cf..d769b181f8 100644
--- a/src/Stripe.net/Entities/Tax/Calculations/CalculationShippingCostTaxBreakdownTaxRateDetails.cs
+++ b/src/Stripe.net/Entities/Tax/Calculations/CalculationShippingCostTaxBreakdownTaxRateDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CalculationShippingCostTaxBreakdownTaxRateDetails : StripeEntity<CalculationShippingCostTaxBreakdownTaxRateDetails>
     {
@@ -10,12 +13,18 @@ public class CalculationShippingCostTaxBreakdownTaxRateDetails : StripeEntity<Ca
         /// "Local Sales and Use Tax", "Value-added tax (VAT)", or "Umsatzsteuer (USt.)".
         /// </summary>
         [JsonProperty("display_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_name")]
+#endif
         public string DisplayName { get; set; }
 
         /// <summary>
         /// The tax rate percentage as a string. For example, 8.5% is represented as "8.5".
         /// </summary>
         [JsonProperty("percentage_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentage_decimal")]
+#endif
         public string PercentageDecimal { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class CalculationShippingCostTaxBreakdownTaxRateDetails : StripeEntity<Ca
         /// <c>vat</c>.
         /// </summary>
         [JsonProperty("tax_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_type")]
+#endif
         public string TaxType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Calculations/CalculationTaxBreakdown.cs b/src/Stripe.net/Entities/Tax/Calculations/CalculationTaxBreakdown.cs
index cf829c0e17..08f234798b 100644
--- a/src/Stripe.net/Entities/Tax/Calculations/CalculationTaxBreakdown.cs
+++ b/src/Stripe.net/Entities/Tax/Calculations/CalculationTaxBreakdown.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CalculationTaxBreakdown : StripeEntity<CalculationTaxBreakdown>
     {
@@ -10,15 +13,24 @@ public class CalculationTaxBreakdown : StripeEntity<CalculationTaxBreakdown>
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
         /// Specifies whether the tax amount is included in the line item amount.
         /// </summary>
         [JsonProperty("inclusive")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("inclusive")]
+#endif
         public bool Inclusive { get; set; }
 
         [JsonProperty("tax_rate_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rate_details")]
+#endif
         public CalculationTaxBreakdownTaxRateDetails TaxRateDetails { get; set; }
 
         /// <summary>
@@ -31,6 +43,9 @@ public class CalculationTaxBreakdown : StripeEntity<CalculationTaxBreakdown>
         /// <c>standard_rated</c>, <c>taxable_basis_reduced</c>, or <c>zero_rated</c>.
         /// </summary>
         [JsonProperty("taxability_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxability_reason")]
+#endif
         public string TaxabilityReason { get; set; }
 
         /// <summary>
@@ -38,6 +53,9 @@ public class CalculationTaxBreakdown : StripeEntity<CalculationTaxBreakdown>
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("taxable_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxable_amount")]
+#endif
         public long TaxableAmount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Calculations/CalculationTaxBreakdownTaxRateDetails.cs b/src/Stripe.net/Entities/Tax/Calculations/CalculationTaxBreakdownTaxRateDetails.cs
index 292c4215ac..7435f93864 100644
--- a/src/Stripe.net/Entities/Tax/Calculations/CalculationTaxBreakdownTaxRateDetails.cs
+++ b/src/Stripe.net/Entities/Tax/Calculations/CalculationTaxBreakdownTaxRateDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CalculationTaxBreakdownTaxRateDetails : StripeEntity<CalculationTaxBreakdownTaxRateDetails>
     {
@@ -10,6 +13,9 @@ public class CalculationTaxBreakdownTaxRateDetails : StripeEntity<CalculationTax
         /// 3166-1 alpha-2</a>).
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -19,12 +25,18 @@ public class CalculationTaxBreakdownTaxRateDetails : StripeEntity<CalculationTax
         /// rate.
         /// </summary>
         [JsonProperty("flat_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flat_amount")]
+#endif
         public CalculationTaxBreakdownTaxRateDetailsFlatAmount FlatAmount { get; set; }
 
         /// <summary>
         /// The tax rate percentage as a string. For example, 8.5% is represented as <c>"8.5"</c>.
         /// </summary>
         [JsonProperty("percentage_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentage_decimal")]
+#endif
         public string PercentageDecimal { get; set; }
 
         /// <summary>
@@ -33,12 +45,18 @@ public class CalculationTaxBreakdownTaxRateDetails : StripeEntity<CalculationTax
         /// One of: <c>flat_amount</c>, or <c>percentage</c>.
         /// </summary>
         [JsonProperty("rate_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("rate_type")]
+#endif
         public string RateType { get; set; }
 
         /// <summary>
         /// State, county, province, or region.
         /// </summary>
         [JsonProperty("state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("state")]
+#endif
         public string State { get; set; }
 
         /// <summary>
@@ -49,6 +67,9 @@ public class CalculationTaxBreakdownTaxRateDetails : StripeEntity<CalculationTax
         /// <c>vat</c>.
         /// </summary>
         [JsonProperty("tax_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_type")]
+#endif
         public string TaxType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Calculations/CalculationTaxBreakdownTaxRateDetailsFlatAmount.cs b/src/Stripe.net/Entities/Tax/Calculations/CalculationTaxBreakdownTaxRateDetailsFlatAmount.cs
index e4371cf655..3647732735 100644
--- a/src/Stripe.net/Entities/Tax/Calculations/CalculationTaxBreakdownTaxRateDetailsFlatAmount.cs
+++ b/src/Stripe.net/Entities/Tax/Calculations/CalculationTaxBreakdownTaxRateDetailsFlatAmount.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CalculationTaxBreakdownTaxRateDetailsFlatAmount : StripeEntity<CalculationTaxBreakdownTaxRateDetailsFlatAmount>
     {
@@ -12,12 +15,18 @@ public class CalculationTaxBreakdownTaxRateDetailsFlatAmount : StripeEntity<Calc
         /// eight digits (e.g., a value of 99999999 for a USD charge of $999,999.99).
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
         /// Three-letter ISO currency code, in lowercase.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/Registration.cs b/src/Stripe.net/Entities/Tax/Registrations/Registration.cs
index d40e96199e..5d1ff601d5 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/Registration.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/Registration.cs
@@ -4,6 +4,9 @@ namespace Stripe.Tax
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A Tax <c>Registration</c> lets us know that your business is registered to collect tax
@@ -23,12 +26,18 @@ public class Registration : StripeEntity<Registration>, IHasId, IHasObject
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -36,6 +45,10 @@ public class Registration : StripeEntity<Registration>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("active_from")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active_from")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime ActiveFrom { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -43,9 +56,15 @@ public class Registration : StripeEntity<Registration>, IHasId, IHasObject
         /// 3166-1 alpha-2</a>).
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         [JsonProperty("country_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country_options")]
+#endif
         public RegistrationCountryOptions CountryOptions { get; set; }
 
         /// <summary>
@@ -53,6 +72,10 @@ public class Registration : StripeEntity<Registration>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -61,6 +84,10 @@ public class Registration : StripeEntity<Registration>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpiresAt { get; set; }
 
         /// <summary>
@@ -68,6 +95,9 @@ public class Registration : StripeEntity<Registration>, IHasId, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -76,6 +106,9 @@ public class Registration : StripeEntity<Registration>, IHasId, IHasObject
         /// One of: <c>active</c>, <c>expired</c>, or <c>scheduled</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptions.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptions.cs
index a709efe4cb..5f9b55a89a 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptions.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptions.cs
@@ -2,265 +2,526 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptions : StripeEntity<RegistrationCountryOptions>
     {
         [JsonProperty("ae")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ae")]
+#endif
         public RegistrationCountryOptionsAe Ae { get; set; }
 
         [JsonProperty("al")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("al")]
+#endif
         public RegistrationCountryOptionsAl Al { get; set; }
 
         [JsonProperty("am")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("am")]
+#endif
         public RegistrationCountryOptionsAm Am { get; set; }
 
         [JsonProperty("ao")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ao")]
+#endif
         public RegistrationCountryOptionsAo Ao { get; set; }
 
         [JsonProperty("at")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("at")]
+#endif
         public RegistrationCountryOptionsAt At { get; set; }
 
         [JsonProperty("au")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("au")]
+#endif
         public RegistrationCountryOptionsAu Au { get; set; }
 
         [JsonProperty("ba")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ba")]
+#endif
         public RegistrationCountryOptionsBa Ba { get; set; }
 
         [JsonProperty("bb")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bb")]
+#endif
         public RegistrationCountryOptionsBb Bb { get; set; }
 
         [JsonProperty("be")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("be")]
+#endif
         public RegistrationCountryOptionsBe Be { get; set; }
 
         [JsonProperty("bg")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bg")]
+#endif
         public RegistrationCountryOptionsBg Bg { get; set; }
 
         [JsonProperty("bh")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bh")]
+#endif
         public RegistrationCountryOptionsBh Bh { get; set; }
 
         [JsonProperty("bs")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bs")]
+#endif
         public RegistrationCountryOptionsBs Bs { get; set; }
 
         [JsonProperty("by")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("by")]
+#endif
         public RegistrationCountryOptionsBy By { get; set; }
 
         [JsonProperty("ca")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ca")]
+#endif
         public RegistrationCountryOptionsCa Ca { get; set; }
 
         [JsonProperty("cd")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cd")]
+#endif
         public RegistrationCountryOptionsCd Cd { get; set; }
 
         [JsonProperty("ch")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ch")]
+#endif
         public RegistrationCountryOptionsCh Ch { get; set; }
 
         [JsonProperty("cl")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cl")]
+#endif
         public RegistrationCountryOptionsCl Cl { get; set; }
 
         [JsonProperty("co")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("co")]
+#endif
         public RegistrationCountryOptionsCo Co { get; set; }
 
         [JsonProperty("cr")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cr")]
+#endif
         public RegistrationCountryOptionsCr Cr { get; set; }
 
         [JsonProperty("cy")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cy")]
+#endif
         public RegistrationCountryOptionsCy Cy { get; set; }
 
         [JsonProperty("cz")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cz")]
+#endif
         public RegistrationCountryOptionsCz Cz { get; set; }
 
         [JsonProperty("de")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("de")]
+#endif
         public RegistrationCountryOptionsDe De { get; set; }
 
         [JsonProperty("dk")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dk")]
+#endif
         public RegistrationCountryOptionsDk Dk { get; set; }
 
         [JsonProperty("ec")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ec")]
+#endif
         public RegistrationCountryOptionsEc Ec { get; set; }
 
         [JsonProperty("ee")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ee")]
+#endif
         public RegistrationCountryOptionsEe Ee { get; set; }
 
         [JsonProperty("eg")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eg")]
+#endif
         public RegistrationCountryOptionsEg Eg { get; set; }
 
         [JsonProperty("es")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("es")]
+#endif
         public RegistrationCountryOptionsEs Es { get; set; }
 
         [JsonProperty("fi")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fi")]
+#endif
         public RegistrationCountryOptionsFi Fi { get; set; }
 
         [JsonProperty("fr")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fr")]
+#endif
         public RegistrationCountryOptionsFr Fr { get; set; }
 
         [JsonProperty("gb")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gb")]
+#endif
         public RegistrationCountryOptionsGb Gb { get; set; }
 
         [JsonProperty("ge")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ge")]
+#endif
         public RegistrationCountryOptionsGe Ge { get; set; }
 
         [JsonProperty("gn")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gn")]
+#endif
         public RegistrationCountryOptionsGn Gn { get; set; }
 
         [JsonProperty("gr")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gr")]
+#endif
         public RegistrationCountryOptionsGr Gr { get; set; }
 
         [JsonProperty("hr")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hr")]
+#endif
         public RegistrationCountryOptionsHr Hr { get; set; }
 
         [JsonProperty("hu")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hu")]
+#endif
         public RegistrationCountryOptionsHu Hu { get; set; }
 
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public RegistrationCountryOptionsId Id { get; set; }
 
         [JsonProperty("ie")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ie")]
+#endif
         public RegistrationCountryOptionsIe Ie { get; set; }
 
         [JsonProperty("is")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("is")]
+#endif
         public RegistrationCountryOptionsIs Is { get; set; }
 
         [JsonProperty("it")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("it")]
+#endif
         public RegistrationCountryOptionsIt It { get; set; }
 
         [JsonProperty("jp")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("jp")]
+#endif
         public RegistrationCountryOptionsJp Jp { get; set; }
 
         [JsonProperty("ke")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ke")]
+#endif
         public RegistrationCountryOptionsKe Ke { get; set; }
 
         [JsonProperty("kh")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kh")]
+#endif
         public RegistrationCountryOptionsKh Kh { get; set; }
 
         [JsonProperty("kr")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kr")]
+#endif
         public RegistrationCountryOptionsKr Kr { get; set; }
 
         [JsonProperty("kz")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kz")]
+#endif
         public RegistrationCountryOptionsKz Kz { get; set; }
 
         [JsonProperty("lt")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lt")]
+#endif
         public RegistrationCountryOptionsLt Lt { get; set; }
 
         [JsonProperty("lu")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lu")]
+#endif
         public RegistrationCountryOptionsLu Lu { get; set; }
 
         [JsonProperty("lv")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lv")]
+#endif
         public RegistrationCountryOptionsLv Lv { get; set; }
 
         [JsonProperty("ma")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ma")]
+#endif
         public RegistrationCountryOptionsMa Ma { get; set; }
 
         [JsonProperty("md")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("md")]
+#endif
         public RegistrationCountryOptionsMd Md { get; set; }
 
         [JsonProperty("me")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("me")]
+#endif
         public RegistrationCountryOptionsMe Me { get; set; }
 
         [JsonProperty("mk")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mk")]
+#endif
         public RegistrationCountryOptionsMk Mk { get; set; }
 
         [JsonProperty("mr")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mr")]
+#endif
         public RegistrationCountryOptionsMr Mr { get; set; }
 
         [JsonProperty("mt")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mt")]
+#endif
         public RegistrationCountryOptionsMt Mt { get; set; }
 
         [JsonProperty("mx")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mx")]
+#endif
         public RegistrationCountryOptionsMx Mx { get; set; }
 
         [JsonProperty("my")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("my")]
+#endif
         public RegistrationCountryOptionsMy My { get; set; }
 
         [JsonProperty("ng")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ng")]
+#endif
         public RegistrationCountryOptionsNg Ng { get; set; }
 
         [JsonProperty("nl")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("nl")]
+#endif
         public RegistrationCountryOptionsNl Nl { get; set; }
 
         [JsonProperty("no")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("no")]
+#endif
         public RegistrationCountryOptionsNo No { get; set; }
 
         [JsonProperty("np")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("np")]
+#endif
         public RegistrationCountryOptionsNp Np { get; set; }
 
         [JsonProperty("nz")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("nz")]
+#endif
         public RegistrationCountryOptionsNz Nz { get; set; }
 
         [JsonProperty("om")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("om")]
+#endif
         public RegistrationCountryOptionsOm Om { get; set; }
 
         [JsonProperty("pe")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pe")]
+#endif
         public RegistrationCountryOptionsPe Pe { get; set; }
 
         [JsonProperty("pl")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pl")]
+#endif
         public RegistrationCountryOptionsPl Pl { get; set; }
 
         [JsonProperty("pt")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pt")]
+#endif
         public RegistrationCountryOptionsPt Pt { get; set; }
 
         [JsonProperty("ro")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ro")]
+#endif
         public RegistrationCountryOptionsRo Ro { get; set; }
 
         [JsonProperty("rs")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("rs")]
+#endif
         public RegistrationCountryOptionsRs Rs { get; set; }
 
         [JsonProperty("ru")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ru")]
+#endif
         public RegistrationCountryOptionsRu Ru { get; set; }
 
         [JsonProperty("sa")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sa")]
+#endif
         public RegistrationCountryOptionsSa Sa { get; set; }
 
         [JsonProperty("se")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("se")]
+#endif
         public RegistrationCountryOptionsSe Se { get; set; }
 
         [JsonProperty("sg")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sg")]
+#endif
         public RegistrationCountryOptionsSg Sg { get; set; }
 
         [JsonProperty("si")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("si")]
+#endif
         public RegistrationCountryOptionsSi Si { get; set; }
 
         [JsonProperty("sk")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sk")]
+#endif
         public RegistrationCountryOptionsSk Sk { get; set; }
 
         [JsonProperty("sn")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sn")]
+#endif
         public RegistrationCountryOptionsSn Sn { get; set; }
 
         [JsonProperty("sr")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sr")]
+#endif
         public RegistrationCountryOptionsSr Sr { get; set; }
 
         [JsonProperty("th")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("th")]
+#endif
         public RegistrationCountryOptionsTh Th { get; set; }
 
         [JsonProperty("tj")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tj")]
+#endif
         public RegistrationCountryOptionsTj Tj { get; set; }
 
         [JsonProperty("tr")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tr")]
+#endif
         public RegistrationCountryOptionsTr Tr { get; set; }
 
         [JsonProperty("tz")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tz")]
+#endif
         public RegistrationCountryOptionsTz Tz { get; set; }
 
         [JsonProperty("ug")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ug")]
+#endif
         public RegistrationCountryOptionsUg Ug { get; set; }
 
         [JsonProperty("us")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us")]
+#endif
         public RegistrationCountryOptionsUs Us { get; set; }
 
         [JsonProperty("uy")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("uy")]
+#endif
         public RegistrationCountryOptionsUy Uy { get; set; }
 
         [JsonProperty("uz")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("uz")]
+#endif
         public RegistrationCountryOptionsUz Uz { get; set; }
 
         [JsonProperty("vn")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("vn")]
+#endif
         public RegistrationCountryOptionsVn Vn { get; set; }
 
         [JsonProperty("za")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("za")]
+#endif
         public RegistrationCountryOptionsZa Za { get; set; }
 
         [JsonProperty("zm")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("zm")]
+#endif
         public RegistrationCountryOptionsZm Zm { get; set; }
 
         [JsonProperty("zw")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("zw")]
+#endif
         public RegistrationCountryOptionsZw Zw { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsAe.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsAe.cs
index c4dc706a91..5d053a73d9 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsAe.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsAe.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsAe : StripeEntity<RegistrationCountryOptionsAe>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsAe : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsAl.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsAl.cs
index 3f28fa0e70..eb7c8512db 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsAl.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsAl.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsAl : StripeEntity<RegistrationCountryOptionsAl>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsAl : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsAm.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsAm.cs
index 60a0daf093..9571c520f0 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsAm.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsAm.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsAm : StripeEntity<RegistrationCountryOptionsAm>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsAm : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsAo.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsAo.cs
index 17b8e0e856..1336ea5d01 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsAo.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsAo.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsAo : StripeEntity<RegistrationCountryOptionsAo>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsAo : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsAt.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsAt.cs
index 1ef24eb274..2b70f745b5 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsAt.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsAt.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsAt : StripeEntity<RegistrationCountryOptionsAt>
     {
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsAtStandard Standard { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class RegistrationCountryOptionsAt : StripeEntity<RegistrationCountryOpti
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsAtStandard.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsAtStandard.cs
index 7860c39af5..924351661d 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsAtStandard.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsAtStandard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsAtStandard : StripeEntity<RegistrationCountryOptionsAtStandard>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsAtStandard : StripeEntity<RegistrationCou
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsAu.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsAu.cs
index 75cb0df4af..f8b3692dc9 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsAu.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsAu.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsAu : StripeEntity<RegistrationCountryOptionsAu>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsAu : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBa.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBa.cs
index c19a2d34f3..183b1f4d0e 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBa.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBa.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsBa : StripeEntity<RegistrationCountryOptionsBa>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsBa : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBb.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBb.cs
index 90e6a73588..5eb42b92f4 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBb.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBb.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsBb : StripeEntity<RegistrationCountryOptionsBb>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsBb : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBe.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBe.cs
index 8d0e2a0f74..529b74185f 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBe.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBe.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsBe : StripeEntity<RegistrationCountryOptionsBe>
     {
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsBeStandard Standard { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class RegistrationCountryOptionsBe : StripeEntity<RegistrationCountryOpti
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBeStandard.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBeStandard.cs
index 88c8df80ac..fb8225cd1a 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBeStandard.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBeStandard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsBeStandard : StripeEntity<RegistrationCountryOptionsBeStandard>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsBeStandard : StripeEntity<RegistrationCou
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBg.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBg.cs
index 01ba4f2517..87f2ba127a 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBg.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBg.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsBg : StripeEntity<RegistrationCountryOptionsBg>
     {
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsBgStandard Standard { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class RegistrationCountryOptionsBg : StripeEntity<RegistrationCountryOpti
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBgStandard.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBgStandard.cs
index 5d215e98c4..33bf643bae 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBgStandard.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBgStandard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsBgStandard : StripeEntity<RegistrationCountryOptionsBgStandard>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsBgStandard : StripeEntity<RegistrationCou
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBh.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBh.cs
index 4c60e2caa4..826588ab54 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBh.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBh.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsBh : StripeEntity<RegistrationCountryOptionsBh>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsBh : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBs.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBs.cs
index f84a54fdd1..c5613b5126 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBs.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBs.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsBs : StripeEntity<RegistrationCountryOptionsBs>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsBs : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBy.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBy.cs
index 124eb6dc66..770f2bb88d 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBy.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsBy.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsBy : StripeEntity<RegistrationCountryOptionsBy>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsBy : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCa.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCa.cs
index 51e8caaa89..871e97f45c 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCa.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCa.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsCa : StripeEntity<RegistrationCountryOptionsCa>
     {
         [JsonProperty("province_standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("province_standard")]
+#endif
         public RegistrationCountryOptionsCaProvinceStandard ProvinceStandard { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class RegistrationCountryOptionsCa : StripeEntity<RegistrationCountryOpti
         /// One of: <c>province_standard</c>, <c>simplified</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCaProvinceStandard.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCaProvinceStandard.cs
index 901ae7c211..a576f90f45 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCaProvinceStandard.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCaProvinceStandard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsCaProvinceStandard : StripeEntity<RegistrationCountryOptionsCaProvinceStandard>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsCaProvinceStandard : StripeEntity<Registr
         /// 3166-2</a>).
         /// </summary>
         [JsonProperty("province")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("province")]
+#endif
         public string Province { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCd.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCd.cs
index 1081c0c53f..5dd4d0734b 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCd.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCd.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsCd : StripeEntity<RegistrationCountryOptionsCd>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsCd : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCh.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCh.cs
index e9212dc8b1..4d21b47678 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCh.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCh.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsCh : StripeEntity<RegistrationCountryOptionsCh>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsCh : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCl.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCl.cs
index e0c50f3b66..f356e098fa 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCl.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCl.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsCl : StripeEntity<RegistrationCountryOptionsCl>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsCl : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCo.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCo.cs
index 140dd1163b..28d6053cef 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCo.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCo.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsCo : StripeEntity<RegistrationCountryOptionsCo>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsCo : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCr.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCr.cs
index eb3f4cbfad..40da230c6d 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCr.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCr.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsCr : StripeEntity<RegistrationCountryOptionsCr>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsCr : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCy.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCy.cs
index 4044369c4c..f6442f4288 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCy.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCy.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsCy : StripeEntity<RegistrationCountryOptionsCy>
     {
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsCyStandard Standard { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class RegistrationCountryOptionsCy : StripeEntity<RegistrationCountryOpti
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCyStandard.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCyStandard.cs
index cc770fffb7..b93c0b21d6 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCyStandard.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCyStandard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsCyStandard : StripeEntity<RegistrationCountryOptionsCyStandard>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsCyStandard : StripeEntity<RegistrationCou
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCz.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCz.cs
index 56ec9cc154..87a2066394 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCz.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCz.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsCz : StripeEntity<RegistrationCountryOptionsCz>
     {
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsCzStandard Standard { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class RegistrationCountryOptionsCz : StripeEntity<RegistrationCountryOpti
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCzStandard.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCzStandard.cs
index 205ff25bbf..8007a5329c 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCzStandard.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsCzStandard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsCzStandard : StripeEntity<RegistrationCountryOptionsCzStandard>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsCzStandard : StripeEntity<RegistrationCou
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsDe.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsDe.cs
index ecb08d0903..ee18b6fa82 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsDe.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsDe.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsDe : StripeEntity<RegistrationCountryOptionsDe>
     {
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsDeStandard Standard { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class RegistrationCountryOptionsDe : StripeEntity<RegistrationCountryOpti
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsDeStandard.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsDeStandard.cs
index 166f269c97..eda1c62405 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsDeStandard.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsDeStandard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsDeStandard : StripeEntity<RegistrationCountryOptionsDeStandard>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsDeStandard : StripeEntity<RegistrationCou
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsDk.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsDk.cs
index 15868a1c42..5860e20dd8 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsDk.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsDk.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsDk : StripeEntity<RegistrationCountryOptionsDk>
     {
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsDkStandard Standard { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class RegistrationCountryOptionsDk : StripeEntity<RegistrationCountryOpti
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsDkStandard.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsDkStandard.cs
index 3601728221..fa1472d9a5 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsDkStandard.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsDkStandard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsDkStandard : StripeEntity<RegistrationCountryOptionsDkStandard>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsDkStandard : StripeEntity<RegistrationCou
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsEc.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsEc.cs
index e9c5fd0ee2..a368de99e5 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsEc.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsEc.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsEc : StripeEntity<RegistrationCountryOptionsEc>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsEc : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsEe.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsEe.cs
index 610d781e48..ce6c920859 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsEe.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsEe.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsEe : StripeEntity<RegistrationCountryOptionsEe>
     {
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsEeStandard Standard { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class RegistrationCountryOptionsEe : StripeEntity<RegistrationCountryOpti
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsEeStandard.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsEeStandard.cs
index 60313a61ca..8a5daee3d9 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsEeStandard.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsEeStandard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsEeStandard : StripeEntity<RegistrationCountryOptionsEeStandard>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsEeStandard : StripeEntity<RegistrationCou
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsEg.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsEg.cs
index 7bd23cf302..9c830d5679 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsEg.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsEg.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsEg : StripeEntity<RegistrationCountryOptionsEg>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsEg : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsEs.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsEs.cs
index 056539776d..412a0aa42a 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsEs.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsEs.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsEs : StripeEntity<RegistrationCountryOptionsEs>
     {
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsEsStandard Standard { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class RegistrationCountryOptionsEs : StripeEntity<RegistrationCountryOpti
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsEsStandard.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsEsStandard.cs
index b1d3095365..b216ee7ac6 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsEsStandard.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsEsStandard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsEsStandard : StripeEntity<RegistrationCountryOptionsEsStandard>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsEsStandard : StripeEntity<RegistrationCou
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsFi.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsFi.cs
index 6308b281d3..44d4e072ed 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsFi.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsFi.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsFi : StripeEntity<RegistrationCountryOptionsFi>
     {
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsFiStandard Standard { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class RegistrationCountryOptionsFi : StripeEntity<RegistrationCountryOpti
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsFiStandard.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsFiStandard.cs
index f9325ccee9..5f34b88f92 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsFiStandard.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsFiStandard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsFiStandard : StripeEntity<RegistrationCountryOptionsFiStandard>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsFiStandard : StripeEntity<RegistrationCou
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsFr.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsFr.cs
index 288f6b0511..4ccf4bbff4 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsFr.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsFr.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsFr : StripeEntity<RegistrationCountryOptionsFr>
     {
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsFrStandard Standard { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class RegistrationCountryOptionsFr : StripeEntity<RegistrationCountryOpti
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsFrStandard.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsFrStandard.cs
index 84a95f484c..dbca781bca 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsFrStandard.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsFrStandard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsFrStandard : StripeEntity<RegistrationCountryOptionsFrStandard>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsFrStandard : StripeEntity<RegistrationCou
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsGb.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsGb.cs
index 5ad7d7a0ec..bb40dfe512 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsGb.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsGb.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsGb : StripeEntity<RegistrationCountryOptionsGb>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsGb : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsGe.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsGe.cs
index 13d70b88ef..b2cf01d054 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsGe.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsGe.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsGe : StripeEntity<RegistrationCountryOptionsGe>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsGe : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsGn.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsGn.cs
index c3738b2a21..bb5c269b81 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsGn.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsGn.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsGn : StripeEntity<RegistrationCountryOptionsGn>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsGn : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsGr.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsGr.cs
index 1a048ec4a6..fd80cd58b4 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsGr.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsGr.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsGr : StripeEntity<RegistrationCountryOptionsGr>
     {
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsGrStandard Standard { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class RegistrationCountryOptionsGr : StripeEntity<RegistrationCountryOpti
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsGrStandard.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsGrStandard.cs
index 5e73ea475d..66cc72d529 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsGrStandard.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsGrStandard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsGrStandard : StripeEntity<RegistrationCountryOptionsGrStandard>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsGrStandard : StripeEntity<RegistrationCou
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsHr.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsHr.cs
index e0538cf0c7..835d417a83 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsHr.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsHr.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsHr : StripeEntity<RegistrationCountryOptionsHr>
     {
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsHrStandard Standard { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class RegistrationCountryOptionsHr : StripeEntity<RegistrationCountryOpti
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsHrStandard.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsHrStandard.cs
index 5beac81655..50ac14626e 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsHrStandard.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsHrStandard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsHrStandard : StripeEntity<RegistrationCountryOptionsHrStandard>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsHrStandard : StripeEntity<RegistrationCou
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsHu.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsHu.cs
index fa5872e54a..da7f973aff 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsHu.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsHu.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsHu : StripeEntity<RegistrationCountryOptionsHu>
     {
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsHuStandard Standard { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class RegistrationCountryOptionsHu : StripeEntity<RegistrationCountryOpti
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsHuStandard.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsHuStandard.cs
index 2c8e0a16dd..e381787bd3 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsHuStandard.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsHuStandard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsHuStandard : StripeEntity<RegistrationCountryOptionsHuStandard>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsHuStandard : StripeEntity<RegistrationCou
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsId.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsId.cs
index 3be13978ae..e9bc9ea7be 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsId.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsId.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsId : StripeEntity<RegistrationCountryOptionsId>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsId : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsIe.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsIe.cs
index 22b02dd7dc..ec6b6e242c 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsIe.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsIe.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsIe : StripeEntity<RegistrationCountryOptionsIe>
     {
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsIeStandard Standard { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class RegistrationCountryOptionsIe : StripeEntity<RegistrationCountryOpti
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsIeStandard.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsIeStandard.cs
index a08d7ef5b2..3476e8d3f6 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsIeStandard.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsIeStandard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsIeStandard : StripeEntity<RegistrationCountryOptionsIeStandard>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsIeStandard : StripeEntity<RegistrationCou
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsIs.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsIs.cs
index 0455838bf4..9d61973296 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsIs.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsIs.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsIs : StripeEntity<RegistrationCountryOptionsIs>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsIs : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsIt.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsIt.cs
index dc554219a3..6dd2621ece 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsIt.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsIt.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsIt : StripeEntity<RegistrationCountryOptionsIt>
     {
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsItStandard Standard { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class RegistrationCountryOptionsIt : StripeEntity<RegistrationCountryOpti
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsItStandard.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsItStandard.cs
index b8e0b94c27..54ddb4753e 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsItStandard.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsItStandard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsItStandard : StripeEntity<RegistrationCountryOptionsItStandard>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsItStandard : StripeEntity<RegistrationCou
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsJp.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsJp.cs
index ddb7dd6608..8a200aa53c 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsJp.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsJp.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsJp : StripeEntity<RegistrationCountryOptionsJp>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsJp : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsKe.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsKe.cs
index d7bc16b949..dc1409e7b3 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsKe.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsKe.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsKe : StripeEntity<RegistrationCountryOptionsKe>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsKe : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsKh.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsKh.cs
index c9a49144b4..4f174be5a5 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsKh.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsKh.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsKh : StripeEntity<RegistrationCountryOptionsKh>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsKh : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsKr.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsKr.cs
index 214c3011c2..f3fb66af39 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsKr.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsKr.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsKr : StripeEntity<RegistrationCountryOptionsKr>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsKr : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsKz.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsKz.cs
index 97ae390df8..09cf6f2d34 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsKz.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsKz.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsKz : StripeEntity<RegistrationCountryOptionsKz>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsKz : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsLt.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsLt.cs
index 271c218f5e..bad1b0afb3 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsLt.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsLt.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsLt : StripeEntity<RegistrationCountryOptionsLt>
     {
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsLtStandard Standard { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class RegistrationCountryOptionsLt : StripeEntity<RegistrationCountryOpti
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsLtStandard.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsLtStandard.cs
index 1ad365524a..ccfbee2f12 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsLtStandard.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsLtStandard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsLtStandard : StripeEntity<RegistrationCountryOptionsLtStandard>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsLtStandard : StripeEntity<RegistrationCou
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsLu.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsLu.cs
index 0660e5a5f8..313e1db644 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsLu.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsLu.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsLu : StripeEntity<RegistrationCountryOptionsLu>
     {
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsLuStandard Standard { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class RegistrationCountryOptionsLu : StripeEntity<RegistrationCountryOpti
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsLuStandard.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsLuStandard.cs
index b290342b51..6481729f62 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsLuStandard.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsLuStandard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsLuStandard : StripeEntity<RegistrationCountryOptionsLuStandard>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsLuStandard : StripeEntity<RegistrationCou
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsLv.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsLv.cs
index 5220f355bd..73e54eb796 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsLv.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsLv.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsLv : StripeEntity<RegistrationCountryOptionsLv>
     {
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsLvStandard Standard { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class RegistrationCountryOptionsLv : StripeEntity<RegistrationCountryOpti
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsLvStandard.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsLvStandard.cs
index 68d1c56db4..2d8a9c7743 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsLvStandard.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsLvStandard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsLvStandard : StripeEntity<RegistrationCountryOptionsLvStandard>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsLvStandard : StripeEntity<RegistrationCou
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMa.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMa.cs
index 5569450858..86d5207c8f 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMa.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMa.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsMa : StripeEntity<RegistrationCountryOptionsMa>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsMa : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMd.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMd.cs
index 92eba4e646..0e9558ea07 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMd.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMd.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsMd : StripeEntity<RegistrationCountryOptionsMd>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsMd : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMe.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMe.cs
index 331e93ace6..776ba35da0 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMe.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMe.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsMe : StripeEntity<RegistrationCountryOptionsMe>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsMe : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMk.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMk.cs
index 41a7fa4824..63f5a0c10a 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMk.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMk.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsMk : StripeEntity<RegistrationCountryOptionsMk>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsMk : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMr.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMr.cs
index ebb2dd7a09..3b2ddd2093 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMr.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMr.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsMr : StripeEntity<RegistrationCountryOptionsMr>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsMr : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMt.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMt.cs
index f40eed2de6..b874ba39ef 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMt.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMt.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsMt : StripeEntity<RegistrationCountryOptionsMt>
     {
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsMtStandard Standard { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class RegistrationCountryOptionsMt : StripeEntity<RegistrationCountryOpti
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMtStandard.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMtStandard.cs
index 236b8b9636..1e9eab61cd 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMtStandard.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMtStandard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsMtStandard : StripeEntity<RegistrationCountryOptionsMtStandard>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsMtStandard : StripeEntity<RegistrationCou
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMx.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMx.cs
index 5782720e76..2ced991fbe 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMx.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMx.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsMx : StripeEntity<RegistrationCountryOptionsMx>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsMx : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMy.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMy.cs
index b952e9c3aa..5a66454ec8 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMy.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsMy.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsMy : StripeEntity<RegistrationCountryOptionsMy>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsMy : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsNg.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsNg.cs
index 01a788ab64..d63eae14d1 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsNg.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsNg.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsNg : StripeEntity<RegistrationCountryOptionsNg>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsNg : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsNl.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsNl.cs
index 92889414ee..f7fa4e3297 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsNl.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsNl.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsNl : StripeEntity<RegistrationCountryOptionsNl>
     {
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsNlStandard Standard { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class RegistrationCountryOptionsNl : StripeEntity<RegistrationCountryOpti
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsNlStandard.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsNlStandard.cs
index ea7be8c97a..78077815ad 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsNlStandard.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsNlStandard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsNlStandard : StripeEntity<RegistrationCountryOptionsNlStandard>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsNlStandard : StripeEntity<RegistrationCou
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsNo.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsNo.cs
index 4e8797e9c6..7de9cba054 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsNo.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsNo.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsNo : StripeEntity<RegistrationCountryOptionsNo>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsNo : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsNp.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsNp.cs
index fbd0c82731..2edc140f4f 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsNp.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsNp.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsNp : StripeEntity<RegistrationCountryOptionsNp>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsNp : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsNz.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsNz.cs
index 139aa2bc33..ef1b355001 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsNz.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsNz.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsNz : StripeEntity<RegistrationCountryOptionsNz>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsNz : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsOm.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsOm.cs
index 3694abf179..35ceabc527 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsOm.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsOm.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsOm : StripeEntity<RegistrationCountryOptionsOm>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsOm : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsPe.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsPe.cs
index 13862d94e1..b73a194dee 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsPe.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsPe.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsPe : StripeEntity<RegistrationCountryOptionsPe>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsPe : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsPl.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsPl.cs
index 2d7328d37e..96676e9969 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsPl.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsPl.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsPl : StripeEntity<RegistrationCountryOptionsPl>
     {
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsPlStandard Standard { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class RegistrationCountryOptionsPl : StripeEntity<RegistrationCountryOpti
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsPlStandard.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsPlStandard.cs
index 7966dc030c..f5663f42db 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsPlStandard.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsPlStandard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsPlStandard : StripeEntity<RegistrationCountryOptionsPlStandard>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsPlStandard : StripeEntity<RegistrationCou
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsPt.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsPt.cs
index 3d88535cc1..d42232e724 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsPt.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsPt.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsPt : StripeEntity<RegistrationCountryOptionsPt>
     {
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsPtStandard Standard { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class RegistrationCountryOptionsPt : StripeEntity<RegistrationCountryOpti
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsPtStandard.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsPtStandard.cs
index 3c500a6a28..352e0bdc25 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsPtStandard.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsPtStandard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsPtStandard : StripeEntity<RegistrationCountryOptionsPtStandard>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsPtStandard : StripeEntity<RegistrationCou
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsRo.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsRo.cs
index d9a4e17ef4..6a8cf33398 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsRo.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsRo.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsRo : StripeEntity<RegistrationCountryOptionsRo>
     {
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsRoStandard Standard { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class RegistrationCountryOptionsRo : StripeEntity<RegistrationCountryOpti
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsRoStandard.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsRoStandard.cs
index 7abd3b2cca..4b686892ab 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsRoStandard.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsRoStandard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsRoStandard : StripeEntity<RegistrationCountryOptionsRoStandard>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsRoStandard : StripeEntity<RegistrationCou
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsRs.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsRs.cs
index 6d614566d0..3b5feb95c7 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsRs.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsRs.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsRs : StripeEntity<RegistrationCountryOptionsRs>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsRs : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsRu.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsRu.cs
index d80da8c0c5..6038563115 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsRu.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsRu.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsRu : StripeEntity<RegistrationCountryOptionsRu>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsRu : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSa.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSa.cs
index 50bd304d1d..a531ef36e2 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSa.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSa.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsSa : StripeEntity<RegistrationCountryOptionsSa>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsSa : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSe.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSe.cs
index 07a064b2be..2c8ac05a21 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSe.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSe.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsSe : StripeEntity<RegistrationCountryOptionsSe>
     {
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsSeStandard Standard { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class RegistrationCountryOptionsSe : StripeEntity<RegistrationCountryOpti
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSeStandard.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSeStandard.cs
index 2ee863f94d..545f990578 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSeStandard.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSeStandard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsSeStandard : StripeEntity<RegistrationCountryOptionsSeStandard>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsSeStandard : StripeEntity<RegistrationCou
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSg.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSg.cs
index 5c8ae2b89c..05238bb9cc 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSg.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSg.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsSg : StripeEntity<RegistrationCountryOptionsSg>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsSg : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSi.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSi.cs
index 2b98a4b50f..b88f2241e5 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSi.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSi.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsSi : StripeEntity<RegistrationCountryOptionsSi>
     {
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsSiStandard Standard { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class RegistrationCountryOptionsSi : StripeEntity<RegistrationCountryOpti
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSiStandard.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSiStandard.cs
index ee53dd699b..c2d95a007b 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSiStandard.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSiStandard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsSiStandard : StripeEntity<RegistrationCountryOptionsSiStandard>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsSiStandard : StripeEntity<RegistrationCou
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSk.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSk.cs
index 55aeb38547..2b7f08f7ac 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSk.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSk.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsSk : StripeEntity<RegistrationCountryOptionsSk>
     {
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsSkStandard Standard { get; set; }
 
         /// <summary>
@@ -13,6 +19,9 @@ public class RegistrationCountryOptionsSk : StripeEntity<RegistrationCountryOpti
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSkStandard.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSkStandard.cs
index 90cd31b217..dada1311f9 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSkStandard.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSkStandard.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsSkStandard : StripeEntity<RegistrationCountryOptionsSkStandard>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsSkStandard : StripeEntity<RegistrationCou
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSn.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSn.cs
index 4c0e7efff8..bf8db8e551 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSn.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSn.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsSn : StripeEntity<RegistrationCountryOptionsSn>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsSn : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSr.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSr.cs
index 38388127da..3c2e69c96a 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSr.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsSr.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsSr : StripeEntity<RegistrationCountryOptionsSr>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsSr : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsTh.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsTh.cs
index 319f454054..5b650c74a1 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsTh.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsTh.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsTh : StripeEntity<RegistrationCountryOptionsTh>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsTh : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsTj.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsTj.cs
index e1de50ce52..6b8ab76648 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsTj.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsTj.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsTj : StripeEntity<RegistrationCountryOptionsTj>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsTj : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsTr.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsTr.cs
index 00aacd01ad..f8894285f1 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsTr.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsTr.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsTr : StripeEntity<RegistrationCountryOptionsTr>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsTr : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsTz.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsTz.cs
index 25aedb2a12..fea7878cbc 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsTz.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsTz.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsTz : StripeEntity<RegistrationCountryOptionsTz>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsTz : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUg.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUg.cs
index 06ebbab232..f0fcdb7823 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUg.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUg.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsUg : StripeEntity<RegistrationCountryOptionsUg>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsUg : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUs.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUs.cs
index 25d1fb5172..e85b1aa71e 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUs.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUs.cs
@@ -2,13 +2,22 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsUs : StripeEntity<RegistrationCountryOptionsUs>
     {
         [JsonProperty("local_amusement_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("local_amusement_tax")]
+#endif
         public RegistrationCountryOptionsUsLocalAmusementTax LocalAmusementTax { get; set; }
 
         [JsonProperty("local_lease_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("local_lease_tax")]
+#endif
         public RegistrationCountryOptionsUsLocalLeaseTax LocalLeaseTax { get; set; }
 
         /// <summary>
@@ -16,9 +25,15 @@ public class RegistrationCountryOptionsUs : StripeEntity<RegistrationCountryOpti
         /// 3166-2</a>).
         /// </summary>
         [JsonProperty("state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("state")]
+#endif
         public string State { get; set; }
 
         [JsonProperty("state_sales_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("state_sales_tax")]
+#endif
         public RegistrationCountryOptionsUsStateSalesTax StateSalesTax { get; set; }
 
         /// <summary>
@@ -28,6 +43,9 @@ public class RegistrationCountryOptionsUs : StripeEntity<RegistrationCountryOpti
         /// <c>state_sales_tax</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUsLocalAmusementTax.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUsLocalAmusementTax.cs
index e7ba560e9f..9bf086027c 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUsLocalAmusementTax.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUsLocalAmusementTax.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsUsLocalAmusementTax : StripeEntity<RegistrationCountryOptionsUsLocalAmusementTax>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsUsLocalAmusementTax : StripeEntity<Regist
         /// representing the local jurisdiction.
         /// </summary>
         [JsonProperty("jurisdiction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("jurisdiction")]
+#endif
         public string Jurisdiction { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUsLocalLeaseTax.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUsLocalLeaseTax.cs
index bfad26dbb7..69fb6c85fc 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUsLocalLeaseTax.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUsLocalLeaseTax.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsUsLocalLeaseTax : StripeEntity<RegistrationCountryOptionsUsLocalLeaseTax>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsUsLocalLeaseTax : StripeEntity<Registrati
         /// representing the local jurisdiction.
         /// </summary>
         [JsonProperty("jurisdiction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("jurisdiction")]
+#endif
         public string Jurisdiction { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUsStateSalesTax.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUsStateSalesTax.cs
index df2298b297..01fb95cfe0 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUsStateSalesTax.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUsStateSalesTax.cs
@@ -3,6 +3,9 @@ namespace Stripe.Tax
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsUsStateSalesTax : StripeEntity<RegistrationCountryOptionsUsStateSalesTax>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsUsStateSalesTax : StripeEntity<Registrati
         /// Elections for the state sales tax registration.
         /// </summary>
         [JsonProperty("elections")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("elections")]
+#endif
         public List<RegistrationCountryOptionsUsStateSalesTaxElection> Elections { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUsStateSalesTaxElection.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUsStateSalesTaxElection.cs
index dfa26183c0..9371514190 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUsStateSalesTaxElection.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUsStateSalesTaxElection.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsUsStateSalesTaxElection : StripeEntity<RegistrationCountryOptionsUsStateSalesTaxElection>
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsUsStateSalesTaxElection : StripeEntity<Re
         /// representing the local jurisdiction.
         /// </summary>
         [JsonProperty("jurisdiction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("jurisdiction")]
+#endif
         public string Jurisdiction { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class RegistrationCountryOptionsUsStateSalesTaxElection : StripeEntity<Re
         /// <c>single_local_use_tax</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUy.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUy.cs
index 757c04f4da..7f980717df 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUy.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUy.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsUy : StripeEntity<RegistrationCountryOptionsUy>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsUy : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUz.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUz.cs
index 4905f9360f..727d7272df 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUz.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsUz.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsUz : StripeEntity<RegistrationCountryOptionsUz>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsUz : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsVn.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsVn.cs
index c7e10236df..303affbb02 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsVn.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsVn.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsVn : StripeEntity<RegistrationCountryOptionsVn>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsVn : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsZa.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsZa.cs
index 2a15d3fe32..d9a4a9259d 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsZa.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsZa.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsZa : StripeEntity<RegistrationCountryOptionsZa>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsZa : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsZm.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsZm.cs
index 6dcf195154..8c02232211 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsZm.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsZm.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsZm : StripeEntity<RegistrationCountryOptionsZm>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsZm : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsZw.cs b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsZw.cs
index 39405eee5f..24d8c694c3 100644
--- a/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsZw.cs
+++ b/src/Stripe.net/Entities/Tax/Registrations/RegistrationCountryOptionsZw.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsZw : StripeEntity<RegistrationCountryOptionsZw>
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsZw : StripeEntity<RegistrationCountryOpti
         /// Type of registration in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Settings/Settings.cs b/src/Stripe.net/Entities/Tax/Settings/Settings.cs
index 659fee67df..3073e4ebcd 100644
--- a/src/Stripe.net/Entities/Tax/Settings/Settings.cs
+++ b/src/Stripe.net/Entities/Tax/Settings/Settings.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// You can use Tax <c>Settings</c> to manage configurations used by Stripe Tax
@@ -16,15 +19,24 @@ public class Settings : StripeEntity<Settings>, IHasObject
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         [JsonProperty("defaults")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("defaults")]
+#endif
         public SettingsDefaults Defaults { get; set; }
 
         /// <summary>
         /// The place where your business is located.
         /// </summary>
         [JsonProperty("head_office")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("head_office")]
+#endif
         public SettingsHeadOffice HeadOffice { get; set; }
 
         /// <summary>
@@ -32,6 +44,9 @@ public class Settings : StripeEntity<Settings>, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -39,9 +54,15 @@ public class Settings : StripeEntity<Settings>, IHasObject
         /// One of: <c>active</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         [JsonProperty("status_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_details")]
+#endif
         public SettingsStatusDetails StatusDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Settings/SettingsDefaults.cs b/src/Stripe.net/Entities/Tax/Settings/SettingsDefaults.cs
index b6ffb1eb22..68ab2acd5e 100644
--- a/src/Stripe.net/Entities/Tax/Settings/SettingsDefaults.cs
+++ b/src/Stripe.net/Entities/Tax/Settings/SettingsDefaults.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SettingsDefaults : StripeEntity<SettingsDefaults>
     {
@@ -14,6 +17,9 @@ public class SettingsDefaults : StripeEntity<SettingsDefaults>
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>inferred_by_currency</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class SettingsDefaults : StripeEntity<SettingsDefaults>
         /// classify your products and prices.
         /// </summary>
         [JsonProperty("tax_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_code")]
+#endif
         public string TaxCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Settings/SettingsHeadOffice.cs b/src/Stripe.net/Entities/Tax/Settings/SettingsHeadOffice.cs
index c0e607a630..d86453db26 100644
--- a/src/Stripe.net/Entities/Tax/Settings/SettingsHeadOffice.cs
+++ b/src/Stripe.net/Entities/Tax/Settings/SettingsHeadOffice.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SettingsHeadOffice : StripeEntity<SettingsHeadOffice>
     {
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public Address Address { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Settings/SettingsStatusDetails.cs b/src/Stripe.net/Entities/Tax/Settings/SettingsStatusDetails.cs
index 25b18f2878..b263e6c8c7 100644
--- a/src/Stripe.net/Entities/Tax/Settings/SettingsStatusDetails.cs
+++ b/src/Stripe.net/Entities/Tax/Settings/SettingsStatusDetails.cs
@@ -2,13 +2,22 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SettingsStatusDetails : StripeEntity<SettingsStatusDetails>
     {
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public SettingsStatusDetailsActive Active { get; set; }
 
         [JsonProperty("pending")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pending")]
+#endif
         public SettingsStatusDetailsPending Pending { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Settings/SettingsStatusDetailsPending.cs b/src/Stripe.net/Entities/Tax/Settings/SettingsStatusDetailsPending.cs
index 12aff8b6e5..b3006b5be9 100644
--- a/src/Stripe.net/Entities/Tax/Settings/SettingsStatusDetailsPending.cs
+++ b/src/Stripe.net/Entities/Tax/Settings/SettingsStatusDetailsPending.cs
@@ -3,6 +3,9 @@ namespace Stripe.Tax
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SettingsStatusDetailsPending : StripeEntity<SettingsStatusDetailsPending>
     {
@@ -13,6 +16,9 @@ public class SettingsStatusDetailsPending : StripeEntity<SettingsStatusDetailsPe
         /// Calculations can fail if missing fields aren't explicitly provided on every call.
         /// </summary>
         [JsonProperty("missing_fields")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("missing_fields")]
+#endif
         public List<string> MissingFields { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/TransactionLineItems/TransactionLineItem.cs b/src/Stripe.net/Entities/Tax/TransactionLineItems/TransactionLineItem.cs
index 727491cd41..05d3a9a932 100644
--- a/src/Stripe.net/Entities/Tax/TransactionLineItems/TransactionLineItem.cs
+++ b/src/Stripe.net/Entities/Tax/TransactionLineItems/TransactionLineItem.cs
@@ -3,6 +3,9 @@ namespace Stripe.Tax
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionLineItem : StripeEntity<TransactionLineItem>, IHasId, IHasMetadata, IHasObject
     {
@@ -10,12 +13,18 @@ public class TransactionLineItem : StripeEntity<TransactionLineItem>, IHasId, IH
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class TransactionLineItem : StripeEntity<TransactionLineItem>, IHasId, IH
         /// calculated on top of this amount.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -32,6 +44,9 @@ public class TransactionLineItem : StripeEntity<TransactionLineItem>, IHasId, IH
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("amount_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_tax")]
+#endif
         public long AmountTax { get; set; }
 
         /// <summary>
@@ -39,6 +54,9 @@ public class TransactionLineItem : StripeEntity<TransactionLineItem>, IHasId, IH
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -47,12 +65,18 @@ public class TransactionLineItem : StripeEntity<TransactionLineItem>, IHasId, IH
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The ID of an existing <a href="https://stripe.com/docs/api/products/object">Product</a>.
         /// </summary>
         [JsonProperty("product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product")]
+#endif
         public string Product { get; set; }
 
         /// <summary>
@@ -60,18 +84,27 @@ public class TransactionLineItem : StripeEntity<TransactionLineItem>, IHasId, IH
         /// reversed.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long Quantity { get; set; }
 
         /// <summary>
         /// A custom identifier for this line item in the transaction.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
         /// If <c>type=reversal</c>, contains information about what was reversed.
         /// </summary>
         [JsonProperty("reversal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reversal")]
+#endif
         public TransactionLineItemReversal Reversal { get; set; }
 
         /// <summary>
@@ -80,6 +113,9 @@ public class TransactionLineItem : StripeEntity<TransactionLineItem>, IHasId, IH
         /// One of: <c>exclusive</c>, or <c>inclusive</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
@@ -87,6 +123,9 @@ public class TransactionLineItem : StripeEntity<TransactionLineItem>, IHasId, IH
         /// resource.
         /// </summary>
         [JsonProperty("tax_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_code")]
+#endif
         public string TaxCode { get; set; }
 
         /// <summary>
@@ -94,6 +133,9 @@ public class TransactionLineItem : StripeEntity<TransactionLineItem>, IHasId, IH
         /// One of: <c>reversal</c>, or <c>transaction</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/TransactionLineItems/TransactionLineItemReversal.cs b/src/Stripe.net/Entities/Tax/TransactionLineItems/TransactionLineItemReversal.cs
index 4437326776..21bf092b2b 100644
--- a/src/Stripe.net/Entities/Tax/TransactionLineItems/TransactionLineItemReversal.cs
+++ b/src/Stripe.net/Entities/Tax/TransactionLineItems/TransactionLineItemReversal.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionLineItemReversal : StripeEntity<TransactionLineItemReversal>
     {
@@ -9,6 +12,9 @@ public class TransactionLineItemReversal : StripeEntity<TransactionLineItemRever
         /// The <c>id</c> of the line item to reverse in the original transaction.
         /// </summary>
         [JsonProperty("original_line_item")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("original_line_item")]
+#endif
         public string OriginalLineItem { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Transactions/Transaction.cs b/src/Stripe.net/Entities/Tax/Transactions/Transaction.cs
index 1c4e9ee4ba..da0e1c0c0d 100644
--- a/src/Stripe.net/Entities/Tax/Transactions/Transaction.cs
+++ b/src/Stripe.net/Entities/Tax/Transactions/Transaction.cs
@@ -5,6 +5,9 @@ namespace Stripe.Tax
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A Tax Transaction records the tax collected from or refunded to your customer.
@@ -18,12 +21,18 @@ public class Transaction : StripeEntity<Transaction>, IHasId, IHasMetadata, IHas
         /// Unique identifier for the transaction.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -31,6 +40,10 @@ public class Transaction : StripeEntity<Transaction>, IHasId, IHasMetadata, IHas
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -39,6 +52,9 @@ public class Transaction : StripeEntity<Transaction>, IHasId, IHasMetadata, IHas
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -46,15 +62,24 @@ public class Transaction : StripeEntity<Transaction>, IHasId, IHasMetadata, IHas
         /// href="https://stripe.com/docs/api/customers/object">Customer</a> used for the resource.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         [JsonProperty("customer_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_details")]
+#endif
         public TransactionCustomerDetails CustomerDetails { get; set; }
 
         /// <summary>
         /// The tax collected or refunded, by line item.
         /// </summary>
         [JsonProperty("line_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line_items")]
+#endif
         public StripeList<TransactionLineItem> LineItems { get; set; }
 
         /// <summary>
@@ -62,6 +87,9 @@ public class Transaction : StripeEntity<Transaction>, IHasId, IHasMetadata, IHas
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -70,6 +98,9 @@ public class Transaction : StripeEntity<Transaction>, IHasId, IHasMetadata, IHas
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -77,30 +108,46 @@ public class Transaction : StripeEntity<Transaction>, IHasId, IHasMetadata, IHas
         /// </summary>
         [JsonProperty("posted_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("posted_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime PostedAt { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// A custom unique identifier, such as 'myOrder_123'.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
         /// If <c>type=reversal</c>, contains information about what was reversed.
         /// </summary>
         [JsonProperty("reversal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reversal")]
+#endif
         public TransactionReversal Reversal { get; set; }
 
         /// <summary>
         /// The details of the ship from location, such as the address.
         /// </summary>
         [JsonProperty("ship_from_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ship_from_details")]
+#endif
         public TransactionShipFromDetails ShipFromDetails { get; set; }
 
         /// <summary>
         /// The shipping cost details for the transaction.
         /// </summary>
         [JsonProperty("shipping_cost")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_cost")]
+#endif
         public TransactionShippingCost ShippingCost { get; set; }
 
         /// <summary>
@@ -109,6 +156,10 @@ public class Transaction : StripeEntity<Transaction>, IHasId, IHasMetadata, IHas
         /// </summary>
         [JsonProperty("tax_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime TaxDate { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -116,6 +167,9 @@ public class Transaction : StripeEntity<Transaction>, IHasId, IHasMetadata, IHas
         /// One of: <c>reversal</c>, or <c>transaction</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Transactions/TransactionCustomerDetails.cs b/src/Stripe.net/Entities/Tax/Transactions/TransactionCustomerDetails.cs
index e54a95c031..98d0e4c693 100644
--- a/src/Stripe.net/Entities/Tax/Transactions/TransactionCustomerDetails.cs
+++ b/src/Stripe.net/Entities/Tax/Transactions/TransactionCustomerDetails.cs
@@ -3,6 +3,9 @@ namespace Stripe.Tax
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionCustomerDetails : StripeEntity<TransactionCustomerDetails>
     {
@@ -10,6 +13,9 @@ public class TransactionCustomerDetails : StripeEntity<TransactionCustomerDetail
         /// The customer's postal address (for example, home or business location).
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public TransactionCustomerDetailsAddress Address { get; set; }
 
         /// <summary>
@@ -17,18 +23,27 @@ public class TransactionCustomerDetails : StripeEntity<TransactionCustomerDetail
         /// One of: <c>billing</c>, or <c>shipping</c>.
         /// </summary>
         [JsonProperty("address_source")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_source")]
+#endif
         public string AddressSource { get; set; }
 
         /// <summary>
         /// The customer's IP address (IPv4 or IPv6).
         /// </summary>
         [JsonProperty("ip_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip_address")]
+#endif
         public string IpAddress { get; set; }
 
         /// <summary>
         /// The customer's tax IDs (for example, EU VAT numbers).
         /// </summary>
         [JsonProperty("tax_ids")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_ids")]
+#endif
         public List<TransactionCustomerDetailsTaxId> TaxIds { get; set; }
 
         /// <summary>
@@ -36,6 +51,9 @@ public class TransactionCustomerDetails : StripeEntity<TransactionCustomerDetail
         /// One of: <c>customer_exempt</c>, <c>none</c>, or <c>reverse_charge</c>.
         /// </summary>
         [JsonProperty("taxability_override")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxability_override")]
+#endif
         public string TaxabilityOverride { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Transactions/TransactionCustomerDetailsAddress.cs b/src/Stripe.net/Entities/Tax/Transactions/TransactionCustomerDetailsAddress.cs
index 2b4e8fb6d8..d7b493dcb2 100644
--- a/src/Stripe.net/Entities/Tax/Transactions/TransactionCustomerDetailsAddress.cs
+++ b/src/Stripe.net/Entities/Tax/Transactions/TransactionCustomerDetailsAddress.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionCustomerDetailsAddress : StripeEntity<TransactionCustomerDetailsAddress>
     {
@@ -9,6 +12,9 @@ public class TransactionCustomerDetailsAddress : StripeEntity<TransactionCustome
         /// City, district, suburb, town, or village.
         /// </summary>
         [JsonProperty("city")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("city")]
+#endif
         public string City { get; set; }
 
         /// <summary>
@@ -16,24 +22,36 @@ public class TransactionCustomerDetailsAddress : StripeEntity<TransactionCustome
         /// 3166-1 alpha-2</a>).
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
         /// Address line 1 (e.g., street, PO Box, or company name).
         /// </summary>
         [JsonProperty("line1")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line1")]
+#endif
         public string Line1 { get; set; }
 
         /// <summary>
         /// Address line 2 (e.g., apartment, suite, unit, or building).
         /// </summary>
         [JsonProperty("line2")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line2")]
+#endif
         public string Line2 { get; set; }
 
         /// <summary>
         /// ZIP or postal code.
         /// </summary>
         [JsonProperty("postal_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("postal_code")]
+#endif
         public string PostalCode { get; set; }
 
         /// <summary>
@@ -41,6 +59,9 @@ public class TransactionCustomerDetailsAddress : StripeEntity<TransactionCustome
         /// subdivision code, without country prefix. Example: "NY" or "TX".
         /// </summary>
         [JsonProperty("state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("state")]
+#endif
         public string State { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Transactions/TransactionCustomerDetailsTaxId.cs b/src/Stripe.net/Entities/Tax/Transactions/TransactionCustomerDetailsTaxId.cs
index b348dd5fbc..4de6c81726 100644
--- a/src/Stripe.net/Entities/Tax/Transactions/TransactionCustomerDetailsTaxId.cs
+++ b/src/Stripe.net/Entities/Tax/Transactions/TransactionCustomerDetailsTaxId.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionCustomerDetailsTaxId : StripeEntity<TransactionCustomerDetailsTaxId>
     {
@@ -49,12 +52,18 @@ public class TransactionCustomerDetailsTaxId : StripeEntity<TransactionCustomerD
         /// <c>ve_rif</c>, <c>vn_tin</c>, <c>za_vat</c>, <c>zm_tin</c>, or <c>zw_tin</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
         /// The value of the tax ID.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Transactions/TransactionReversal.cs b/src/Stripe.net/Entities/Tax/Transactions/TransactionReversal.cs
index 61001b2e1d..c2541c14a9 100644
--- a/src/Stripe.net/Entities/Tax/Transactions/TransactionReversal.cs
+++ b/src/Stripe.net/Entities/Tax/Transactions/TransactionReversal.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionReversal : StripeEntity<TransactionReversal>
     {
@@ -9,6 +12,9 @@ public class TransactionReversal : StripeEntity<TransactionReversal>
         /// The <c>id</c> of the reversed <c>Transaction</c> object.
         /// </summary>
         [JsonProperty("original_transaction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("original_transaction")]
+#endif
         public string OriginalTransaction { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Transactions/TransactionShipFromDetails.cs b/src/Stripe.net/Entities/Tax/Transactions/TransactionShipFromDetails.cs
index 3133b59035..e708f6509c 100644
--- a/src/Stripe.net/Entities/Tax/Transactions/TransactionShipFromDetails.cs
+++ b/src/Stripe.net/Entities/Tax/Transactions/TransactionShipFromDetails.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionShipFromDetails : StripeEntity<TransactionShipFromDetails>
     {
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public TransactionShipFromDetailsAddress Address { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Transactions/TransactionShipFromDetailsAddress.cs b/src/Stripe.net/Entities/Tax/Transactions/TransactionShipFromDetailsAddress.cs
index 4c69eec879..0789af30d1 100644
--- a/src/Stripe.net/Entities/Tax/Transactions/TransactionShipFromDetailsAddress.cs
+++ b/src/Stripe.net/Entities/Tax/Transactions/TransactionShipFromDetailsAddress.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionShipFromDetailsAddress : StripeEntity<TransactionShipFromDetailsAddress>
     {
@@ -9,6 +12,9 @@ public class TransactionShipFromDetailsAddress : StripeEntity<TransactionShipFro
         /// City, district, suburb, town, or village.
         /// </summary>
         [JsonProperty("city")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("city")]
+#endif
         public string City { get; set; }
 
         /// <summary>
@@ -16,24 +22,36 @@ public class TransactionShipFromDetailsAddress : StripeEntity<TransactionShipFro
         /// 3166-1 alpha-2</a>).
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
         /// Address line 1 (e.g., street, PO Box, or company name).
         /// </summary>
         [JsonProperty("line1")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line1")]
+#endif
         public string Line1 { get; set; }
 
         /// <summary>
         /// Address line 2 (e.g., apartment, suite, unit, or building).
         /// </summary>
         [JsonProperty("line2")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line2")]
+#endif
         public string Line2 { get; set; }
 
         /// <summary>
         /// ZIP or postal code.
         /// </summary>
         [JsonProperty("postal_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("postal_code")]
+#endif
         public string PostalCode { get; set; }
 
         /// <summary>
@@ -41,6 +59,9 @@ public class TransactionShipFromDetailsAddress : StripeEntity<TransactionShipFro
         /// subdivision code, without country prefix. Example: "NY" or "TX".
         /// </summary>
         [JsonProperty("state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("state")]
+#endif
         public string State { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Transactions/TransactionShippingCost.cs b/src/Stripe.net/Entities/Tax/Transactions/TransactionShippingCost.cs
index a826975e98..301c06c7a2 100644
--- a/src/Stripe.net/Entities/Tax/Transactions/TransactionShippingCost.cs
+++ b/src/Stripe.net/Entities/Tax/Transactions/TransactionShippingCost.cs
@@ -3,6 +3,9 @@ namespace Stripe.Tax
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionShippingCost : StripeEntity<TransactionShippingCost>
     {
@@ -13,6 +16,9 @@ public class TransactionShippingCost : StripeEntity<TransactionShippingCost>
         /// calculated on top of this amount.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class TransactionShippingCost : StripeEntity<TransactionShippingCost>
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("amount_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_tax")]
+#endif
         public long AmountTax { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class TransactionShippingCost : StripeEntity<TransactionShippingCost>
         /// href="https://stripe.com/docs/api/shipping_rates/object">ShippingRate</a>.
         /// </summary>
         [JsonProperty("shipping_rate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_rate")]
+#endif
         public string ShippingRate { get; set; }
 
         /// <summary>
@@ -35,6 +47,9 @@ public class TransactionShippingCost : StripeEntity<TransactionShippingCost>
         /// One of: <c>exclusive</c>, or <c>inclusive</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
@@ -42,6 +57,9 @@ public class TransactionShippingCost : StripeEntity<TransactionShippingCost>
         /// transaction resource object and will be removed in the next API version.).
         /// </summary>
         [JsonProperty("tax_breakdown")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_breakdown")]
+#endif
         public List<TransactionShippingCostTaxBreakdown> TaxBreakdown { get; set; }
 
         /// <summary>
@@ -49,6 +67,9 @@ public class TransactionShippingCost : StripeEntity<TransactionShippingCost>
         /// shipping.
         /// </summary>
         [JsonProperty("tax_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_code")]
+#endif
         public string TaxCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Transactions/TransactionShippingCostTaxBreakdown.cs b/src/Stripe.net/Entities/Tax/Transactions/TransactionShippingCostTaxBreakdown.cs
index 3777afb08a..067acad462 100644
--- a/src/Stripe.net/Entities/Tax/Transactions/TransactionShippingCostTaxBreakdown.cs
+++ b/src/Stripe.net/Entities/Tax/Transactions/TransactionShippingCostTaxBreakdown.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionShippingCostTaxBreakdown : StripeEntity<TransactionShippingCostTaxBreakdown>
     {
@@ -10,9 +13,15 @@ public class TransactionShippingCostTaxBreakdown : StripeEntity<TransactionShipp
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         [JsonProperty("jurisdiction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("jurisdiction")]
+#endif
         public TransactionShippingCostTaxBreakdownJurisdiction Jurisdiction { get; set; }
 
         /// <summary>
@@ -21,6 +30,9 @@ public class TransactionShippingCostTaxBreakdown : StripeEntity<TransactionShipp
         /// One of: <c>destination</c>, or <c>origin</c>.
         /// </summary>
         [JsonProperty("sourcing")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sourcing")]
+#endif
         public string Sourcing { get; set; }
 
         /// <summary>
@@ -28,6 +40,9 @@ public class TransactionShippingCostTaxBreakdown : StripeEntity<TransactionShipp
         /// not imposed, for example if the product is exempt from tax.
         /// </summary>
         [JsonProperty("tax_rate_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rate_details")]
+#endif
         public TransactionShippingCostTaxBreakdownTaxRateDetails TaxRateDetails { get; set; }
 
         /// <summary>
@@ -40,6 +55,9 @@ public class TransactionShippingCostTaxBreakdown : StripeEntity<TransactionShipp
         /// <c>standard_rated</c>, <c>taxable_basis_reduced</c>, or <c>zero_rated</c>.
         /// </summary>
         [JsonProperty("taxability_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxability_reason")]
+#endif
         public string TaxabilityReason { get; set; }
 
         /// <summary>
@@ -47,6 +65,9 @@ public class TransactionShippingCostTaxBreakdown : StripeEntity<TransactionShipp
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("taxable_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxable_amount")]
+#endif
         public long TaxableAmount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Transactions/TransactionShippingCostTaxBreakdownJurisdiction.cs b/src/Stripe.net/Entities/Tax/Transactions/TransactionShippingCostTaxBreakdownJurisdiction.cs
index 15f47b5f83..4c930e23f4 100644
--- a/src/Stripe.net/Entities/Tax/Transactions/TransactionShippingCostTaxBreakdownJurisdiction.cs
+++ b/src/Stripe.net/Entities/Tax/Transactions/TransactionShippingCostTaxBreakdownJurisdiction.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionShippingCostTaxBreakdownJurisdiction : StripeEntity<TransactionShippingCostTaxBreakdownJurisdiction>
     {
@@ -10,12 +13,18 @@ public class TransactionShippingCostTaxBreakdownJurisdiction : StripeEntity<Tran
         /// 3166-1 alpha-2</a>).
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
         /// A human-readable name for the jurisdiction imposing the tax.
         /// </summary>
         [JsonProperty("display_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_name")]
+#endif
         public string DisplayName { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class TransactionShippingCostTaxBreakdownJurisdiction : StripeEntity<Tran
         /// One of: <c>city</c>, <c>country</c>, <c>county</c>, <c>district</c>, or <c>state</c>.
         /// </summary>
         [JsonProperty("level")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("level")]
+#endif
         public string Level { get; set; }
 
         /// <summary>
@@ -30,6 +42,9 @@ public class TransactionShippingCostTaxBreakdownJurisdiction : StripeEntity<Tran
         /// without country prefix. For example, "NY" for New York, United States.
         /// </summary>
         [JsonProperty("state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("state")]
+#endif
         public string State { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Tax/Transactions/TransactionShippingCostTaxBreakdownTaxRateDetails.cs b/src/Stripe.net/Entities/Tax/Transactions/TransactionShippingCostTaxBreakdownTaxRateDetails.cs
index a63b82a1e4..afc4a3e94d 100644
--- a/src/Stripe.net/Entities/Tax/Transactions/TransactionShippingCostTaxBreakdownTaxRateDetails.cs
+++ b/src/Stripe.net/Entities/Tax/Transactions/TransactionShippingCostTaxBreakdownTaxRateDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionShippingCostTaxBreakdownTaxRateDetails : StripeEntity<TransactionShippingCostTaxBreakdownTaxRateDetails>
     {
@@ -10,12 +13,18 @@ public class TransactionShippingCostTaxBreakdownTaxRateDetails : StripeEntity<Tr
         /// "Local Sales and Use Tax", "Value-added tax (VAT)", or "Umsatzsteuer (USt.)".
         /// </summary>
         [JsonProperty("display_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_name")]
+#endif
         public string DisplayName { get; set; }
 
         /// <summary>
         /// The tax rate percentage as a string. For example, 8.5% is represented as "8.5".
         /// </summary>
         [JsonProperty("percentage_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentage_decimal")]
+#endif
         public string PercentageDecimal { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class TransactionShippingCostTaxBreakdownTaxRateDetails : StripeEntity<Tr
         /// <c>vat</c>.
         /// </summary>
         [JsonProperty("tax_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_type")]
+#endif
         public string TaxType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/TaxCodes/TaxCode.cs b/src/Stripe.net/Entities/TaxCodes/TaxCode.cs
index e912eb1039..d8162a015e 100644
--- a/src/Stripe.net/Entities/TaxCodes/TaxCode.cs
+++ b/src/Stripe.net/Entities/TaxCodes/TaxCode.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// <a href="https://stripe.com/docs/tax/tax-categories">Tax codes</a> classify goods and
@@ -13,24 +16,36 @@ public class TaxCode : StripeEntity<TaxCode>, IHasId, IHasObject
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// A detailed description of which types of products the tax code represents.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// A short name for the tax code.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/TaxDeductedAtSources/TaxDeductedAtSource.cs b/src/Stripe.net/Entities/TaxDeductedAtSources/TaxDeductedAtSource.cs
index 99bd83ea7b..41c008dcaf 100644
--- a/src/Stripe.net/Entities/TaxDeductedAtSources/TaxDeductedAtSource.cs
+++ b/src/Stripe.net/Entities/TaxDeductedAtSources/TaxDeductedAtSource.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TaxDeductedAtSource : StripeEntity<TaxDeductedAtSource>, IHasId, IHasObject, IBalanceTransactionSource
     {
@@ -11,12 +14,18 @@ public class TaxDeductedAtSource : StripeEntity<TaxDeductedAtSource>, IHasId, IH
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -25,6 +34,10 @@ public class TaxDeductedAtSource : StripeEntity<TaxDeductedAtSource>, IHasId, IH
         /// </summary>
         [JsonProperty("period_end")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("period_end")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime PeriodEnd { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -33,12 +46,19 @@ public class TaxDeductedAtSource : StripeEntity<TaxDeductedAtSource>, IHasId, IH
         /// </summary>
         [JsonProperty("period_start")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("period_start")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime PeriodStart { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// The TAN that was supplied to Stripe when TDS was assessed.
         /// </summary>
         [JsonProperty("tax_deduction_account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_deduction_account_number")]
+#endif
         public string TaxDeductionAccountNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/TaxIds/TaxId.cs b/src/Stripe.net/Entities/TaxIds/TaxId.cs
index fc07d20726..28a663ab36 100644
--- a/src/Stripe.net/Entities/TaxIds/TaxId.cs
+++ b/src/Stripe.net/Entities/TaxIds/TaxId.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// You can add one or multiple tax IDs to a <a
@@ -14,24 +17,36 @@ namespace Stripe
     /// identification numbers</a>, <a
     /// href="https://stripe.com/docs/invoicing/connect#account-tax-ids">Account tax IDs</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class TaxId : StripeEntity<TaxId>, IHasId, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Two-letter ISO code representing the country of the tax ID.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -39,6 +54,10 @@ public class TaxId : StripeEntity<TaxId>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         #region Expandable Customer
@@ -48,6 +67,9 @@ public class TaxId : StripeEntity<TaxId>, IHasId, IHasObject
         /// ID of the customer.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerId
         {
             get => this.InternalCustomer?.Id;
@@ -61,6 +83,9 @@ public string CustomerId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Customer Customer
         {
             get => this.InternalCustomer?.ExpandedObject;
@@ -69,6 +94,10 @@ public Customer Customer
 
         [JsonProperty("customer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Customer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Customer>))]
+#endif
         internal ExpandableField<Customer> InternalCustomer { get; set; }
         #endregion
 
@@ -76,6 +105,10 @@ public Customer Customer
         /// Whether this object is deleted or not.
         /// </summary>
         [JsonProperty("deleted", NullValueHandling = NullValueHandling.Ignore)]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+        [STJS.JsonIgnore(Condition = STJS.JsonIgnoreCondition.WhenWritingNull)]
+#endif
         public bool? Deleted { get; set; }
 
         /// <summary>
@@ -83,12 +116,18 @@ public Customer Customer
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
         /// The account or customer the tax ID belongs to.
         /// </summary>
         [JsonProperty("owner")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("owner")]
+#endif
         public TaxIdOwner Owner { get; set; }
 
         /// <summary>
@@ -135,18 +174,27 @@ public Customer Customer
         /// <c>ve_rif</c>, <c>vn_tin</c>, <c>za_vat</c>, <c>zm_tin</c>, or <c>zw_tin</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
         /// Value of the tax ID.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
 
         /// <summary>
         /// Tax ID verification information.
         /// </summary>
         [JsonProperty("verification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification")]
+#endif
         public TaxIdVerification Verification { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/TaxIds/TaxIdOwner.cs b/src/Stripe.net/Entities/TaxIds/TaxIdOwner.cs
index b06032ab94..fd495014c2 100644
--- a/src/Stripe.net/Entities/TaxIds/TaxIdOwner.cs
+++ b/src/Stripe.net/Entities/TaxIds/TaxIdOwner.cs
@@ -3,7 +3,13 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class TaxIdOwner : StripeEntity<TaxIdOwner>
     {
         #region Expandable Account
@@ -13,6 +19,9 @@ public class TaxIdOwner : StripeEntity<TaxIdOwner>
         /// The account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string AccountId
         {
             get => this.InternalAccount?.Id;
@@ -26,6 +35,9 @@ public string AccountId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Account
         {
             get => this.InternalAccount?.ExpandedObject;
@@ -34,6 +46,10 @@ public Account Account
 
         [JsonProperty("account")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalAccount { get; set; }
         #endregion
 
@@ -44,6 +60,9 @@ public Account Account
         /// The Connect Application being referenced when <c>type</c> is <c>application</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ApplicationId
         {
             get => this.InternalApplication?.Id;
@@ -57,6 +76,9 @@ public string ApplicationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Application Application
         {
             get => this.InternalApplication?.ExpandedObject;
@@ -65,6 +87,10 @@ public Application Application
 
         [JsonProperty("application")]
         [JsonConverter(typeof(ExpandableFieldConverter<Application>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Application>))]
+#endif
         internal ExpandableField<Application> InternalApplication { get; set; }
         #endregion
 
@@ -75,6 +101,9 @@ public Application Application
         /// The customer being referenced when <c>type</c> is <c>customer</c>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string CustomerId
         {
             get => this.InternalCustomer?.Id;
@@ -88,6 +117,9 @@ public string CustomerId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Customer Customer
         {
             get => this.InternalCustomer?.ExpandedObject;
@@ -96,6 +128,10 @@ public Customer Customer
 
         [JsonProperty("customer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Customer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Customer>))]
+#endif
         internal ExpandableField<Customer> InternalCustomer { get; set; }
         #endregion
 
@@ -104,6 +140,9 @@ public Customer Customer
         /// One of: <c>account</c>, <c>application</c>, <c>customer</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/TaxIds/TaxIdVerification.cs b/src/Stripe.net/Entities/TaxIds/TaxIdVerification.cs
index f847ca4f95..06c6373d7c 100644
--- a/src/Stripe.net/Entities/TaxIds/TaxIdVerification.cs
+++ b/src/Stripe.net/Entities/TaxIds/TaxIdVerification.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TaxIdVerification : StripeEntity<TaxIdVerification>
     {
@@ -11,18 +14,27 @@ public class TaxIdVerification : StripeEntity<TaxIdVerification>
         /// One of: <c>pending</c>, <c>unavailable</c>, <c>unverified</c>, or <c>verified</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
         /// Verified address.
         /// </summary>
         [JsonProperty("verified_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verified_address")]
+#endif
         public string VerifiedAddress { get; set; }
 
         /// <summary>
         /// Verified name.
         /// </summary>
         [JsonProperty("verified_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verified_name")]
+#endif
         public string VerifiedName { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/TaxRates/TaxRate.cs b/src/Stripe.net/Entities/TaxRates/TaxRate.cs
index d7d2020ede..e8c58bacc2 100644
--- a/src/Stripe.net/Entities/TaxRates/TaxRate.cs
+++ b/src/Stripe.net/Entities/TaxRates/TaxRate.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Tax rates can be applied to <a
@@ -21,12 +24,18 @@ public class TaxRate : StripeEntity<TaxRate>, IHasId, IHasMetadata, IHasObject
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -35,6 +44,9 @@ public class TaxRate : StripeEntity<TaxRate>, IHasId, IHasMetadata, IHasObject
         /// that already have it set.
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool Active { get; set; }
 
         /// <summary>
@@ -42,6 +54,9 @@ public class TaxRate : StripeEntity<TaxRate>, IHasId, IHasMetadata, IHasObject
         /// 3166-1 alpha-2</a>).
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -49,6 +64,10 @@ public class TaxRate : StripeEntity<TaxRate>, IHasId, IHasMetadata, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -56,6 +75,9 @@ public class TaxRate : StripeEntity<TaxRate>, IHasId, IHasMetadata, IHasObject
         /// visible to your customers.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -63,6 +85,9 @@ public class TaxRate : StripeEntity<TaxRate>, IHasId, IHasMetadata, IHasObject
         /// email, PDF, and the hosted invoice page.
         /// </summary>
         [JsonProperty("display_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_name")]
+#endif
         public string DisplayName { get; set; }
 
         /// <summary>
@@ -72,6 +97,9 @@ public class TaxRate : StripeEntity<TaxRate>, IHasId, IHasMetadata, IHasObject
         /// collect taxes in the corresponding jurisdiction.
         /// </summary>
         [JsonProperty("effective_percentage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("effective_percentage")]
+#endif
         public decimal? EffectivePercentage { get; set; }
 
         /// <summary>
@@ -81,12 +109,18 @@ public class TaxRate : StripeEntity<TaxRate>, IHasId, IHasMetadata, IHasObject
         /// rate.
         /// </summary>
         [JsonProperty("flat_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flat_amount")]
+#endif
         public TaxRateFlatAmount FlatAmount { get; set; }
 
         /// <summary>
         /// This specifies if the tax rate is inclusive or exclusive.
         /// </summary>
         [JsonProperty("inclusive")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("inclusive")]
+#endif
         public bool Inclusive { get; set; }
 
         /// <summary>
@@ -94,6 +128,9 @@ public class TaxRate : StripeEntity<TaxRate>, IHasId, IHasMetadata, IHasObject
         /// purposes. It also appears on your customer’s invoice.
         /// </summary>
         [JsonProperty("jurisdiction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("jurisdiction")]
+#endif
         public string Jurisdiction { get; set; }
 
         /// <summary>
@@ -103,6 +140,9 @@ public class TaxRate : StripeEntity<TaxRate>, IHasId, IHasMetadata, IHasObject
         /// <c>state</c>.
         /// </summary>
         [JsonProperty("jurisdiction_level")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("jurisdiction_level")]
+#endif
         public string JurisdictionLevel { get; set; }
 
         /// <summary>
@@ -110,6 +150,9 @@ public class TaxRate : StripeEntity<TaxRate>, IHasId, IHasMetadata, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -118,6 +161,9 @@ public class TaxRate : StripeEntity<TaxRate>, IHasId, IHasMetadata, IHasObject
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -125,6 +171,9 @@ public class TaxRate : StripeEntity<TaxRate>, IHasId, IHasMetadata, IHasObject
         /// this percentage includes the statutory tax rate of non-taxable jurisdictions.
         /// </summary>
         [JsonProperty("percentage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentage")]
+#endif
         public decimal Percentage { get; set; }
 
         /// <summary>
@@ -133,6 +182,9 @@ public class TaxRate : StripeEntity<TaxRate>, IHasId, IHasMetadata, IHasObject
         /// One of: <c>flat_amount</c>, or <c>percentage</c>.
         /// </summary>
         [JsonProperty("rate_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("rate_type")]
+#endif
         public string RateType { get; set; }
 
         /// <summary>
@@ -140,6 +192,9 @@ public class TaxRate : StripeEntity<TaxRate>, IHasId, IHasMetadata, IHasObject
         /// without country prefix. For example, "NY" for New York, United States.
         /// </summary>
         [JsonProperty("state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("state")]
+#endif
         public string State { get; set; }
 
         /// <summary>
@@ -150,6 +205,9 @@ public class TaxRate : StripeEntity<TaxRate>, IHasId, IHasMetadata, IHasObject
         /// <c>vat</c>.
         /// </summary>
         [JsonProperty("tax_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_type")]
+#endif
         public string TaxType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/TaxRates/TaxRateFlatAmount.cs b/src/Stripe.net/Entities/TaxRates/TaxRateFlatAmount.cs
index 9818143b1b..31946b2490 100644
--- a/src/Stripe.net/Entities/TaxRates/TaxRateFlatAmount.cs
+++ b/src/Stripe.net/Entities/TaxRates/TaxRateFlatAmount.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TaxRateFlatAmount : StripeEntity<TaxRateFlatAmount>
     {
@@ -12,12 +15,18 @@ public class TaxRateFlatAmount : StripeEntity<TaxRateFlatAmount>
         /// eight digits (e.g., a value of 99999999 for a USD charge of $999,999.99).
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
         /// Three-letter ISO currency code, in lowercase.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Configurations/Configuration.cs b/src/Stripe.net/Entities/Terminal/Configurations/Configuration.cs
index 95e0ccd3e6..8a90ece59f 100644
--- a/src/Stripe.net/Entities/Terminal/Configurations/Configuration.cs
+++ b/src/Stripe.net/Entities/Terminal/Configurations/Configuration.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A Configurations object represents how features should be configured for terminal
@@ -13,27 +16,43 @@ public class Configuration : StripeEntity<Configuration>, IHasId, IHasObject
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         [JsonProperty("bbpos_wisepos_e")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bbpos_wisepos_e")]
+#endif
         public ConfigurationBbposWiseposE BbposWiseposE { get; set; }
 
         /// <summary>
         /// Whether this object is deleted or not.
         /// </summary>
         [JsonProperty("deleted", NullValueHandling = NullValueHandling.Ignore)]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+        [STJS.JsonIgnore(Condition = STJS.JsonIgnoreCondition.WhenWritingNull)]
+#endif
         public bool? Deleted { get; set; }
 
         /// <summary>
         /// Whether this Configuration is the default for your account.
         /// </summary>
         [JsonProperty("is_account_default")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("is_account_default")]
+#endif
         public bool? IsAccountDefault { get; set; }
 
         /// <summary>
@@ -41,27 +60,48 @@ public class Configuration : StripeEntity<Configuration>, IHasId, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
         /// String indicating the name of the Configuration object, set by the user.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         [JsonProperty("offline")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("offline")]
+#endif
         public ConfigurationOffline Offline { get; set; }
 
         [JsonProperty("reboot_window")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reboot_window")]
+#endif
         public ConfigurationRebootWindow RebootWindow { get; set; }
 
         [JsonProperty("stripe_s700")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("stripe_s700")]
+#endif
         public ConfigurationStripeS700 StripeS700 { get; set; }
 
         [JsonProperty("tipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tipping")]
+#endif
         public ConfigurationTipping Tipping { get; set; }
 
         [JsonProperty("verifone_p400")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verifone_p400")]
+#endif
         public ConfigurationVerifoneP400 VerifoneP400 { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationBbposWiseposE.cs b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationBbposWiseposE.cs
index 152fed5493..f07cc8a12e 100644
--- a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationBbposWiseposE.cs
+++ b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationBbposWiseposE.cs
@@ -3,7 +3,13 @@ namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class ConfigurationBbposWiseposE : StripeEntity<ConfigurationBbposWiseposE>
     {
         #region Expandable Splashscreen
@@ -13,6 +19,9 @@ public class ConfigurationBbposWiseposE : StripeEntity<ConfigurationBbposWisepos
         /// A File ID representing an image you would like displayed on the reader.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string SplashscreenId
         {
             get => this.InternalSplashscreen?.Id;
@@ -26,6 +35,9 @@ public string SplashscreenId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File Splashscreen
         {
             get => this.InternalSplashscreen?.ExpandedObject;
@@ -34,6 +46,10 @@ public File Splashscreen
 
         [JsonProperty("splashscreen")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("splashscreen")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalSplashscreen { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationOffline.cs b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationOffline.cs
index d8643eada5..e01c98c66b 100644
--- a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationOffline.cs
+++ b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationOffline.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationOffline : StripeEntity<ConfigurationOffline>
     {
@@ -10,6 +13,9 @@ public class ConfigurationOffline : StripeEntity<ConfigurationOffline>
         /// Defaults to false.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationRebootWindow.cs b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationRebootWindow.cs
index 8678d94c8c..acbd0f4736 100644
--- a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationRebootWindow.cs
+++ b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationRebootWindow.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationRebootWindow : StripeEntity<ConfigurationRebootWindow>
     {
@@ -10,12 +13,18 @@ public class ConfigurationRebootWindow : StripeEntity<ConfigurationRebootWindow>
         /// value must be different than the start_hour.
         /// </summary>
         [JsonProperty("end_hour")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end_hour")]
+#endif
         public long EndHour { get; set; }
 
         /// <summary>
         /// Integer between 0 to 23 that represents the start hour of the reboot time window.
         /// </summary>
         [JsonProperty("start_hour")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("start_hour")]
+#endif
         public long StartHour { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationStripeS700.cs b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationStripeS700.cs
index e6a2431261..aefbb6d175 100644
--- a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationStripeS700.cs
+++ b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationStripeS700.cs
@@ -3,7 +3,13 @@ namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class ConfigurationStripeS700 : StripeEntity<ConfigurationStripeS700>
     {
         #region Expandable Splashscreen
@@ -13,6 +19,9 @@ public class ConfigurationStripeS700 : StripeEntity<ConfigurationStripeS700>
         /// A File ID representing an image you would like displayed on the reader.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string SplashscreenId
         {
             get => this.InternalSplashscreen?.Id;
@@ -26,6 +35,9 @@ public string SplashscreenId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File Splashscreen
         {
             get => this.InternalSplashscreen?.ExpandedObject;
@@ -34,6 +46,10 @@ public File Splashscreen
 
         [JsonProperty("splashscreen")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("splashscreen")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalSplashscreen { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTipping.cs b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTipping.cs
index 53c9c3f2b5..48de1d68ad 100644
--- a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTipping.cs
+++ b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTipping.cs
@@ -2,55 +2,106 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTipping : StripeEntity<ConfigurationTipping>
     {
         [JsonProperty("aud")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("aud")]
+#endif
         public ConfigurationTippingAud Aud { get; set; }
 
         [JsonProperty("cad")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cad")]
+#endif
         public ConfigurationTippingCad Cad { get; set; }
 
         [JsonProperty("chf")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("chf")]
+#endif
         public ConfigurationTippingChf Chf { get; set; }
 
         [JsonProperty("czk")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("czk")]
+#endif
         public ConfigurationTippingCzk Czk { get; set; }
 
         [JsonProperty("dkk")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dkk")]
+#endif
         public ConfigurationTippingDkk Dkk { get; set; }
 
         [JsonProperty("eur")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eur")]
+#endif
         public ConfigurationTippingEur Eur { get; set; }
 
         [JsonProperty("gbp")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gbp")]
+#endif
         public ConfigurationTippingGbp Gbp { get; set; }
 
         [JsonProperty("hkd")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hkd")]
+#endif
         public ConfigurationTippingHkd Hkd { get; set; }
 
         [JsonProperty("jpy")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("jpy")]
+#endif
         public ConfigurationTippingJpy Jpy { get; set; }
 
         [JsonProperty("myr")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("myr")]
+#endif
         public ConfigurationTippingMyr Myr { get; set; }
 
         [JsonProperty("nok")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("nok")]
+#endif
         public ConfigurationTippingNok Nok { get; set; }
 
         [JsonProperty("nzd")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("nzd")]
+#endif
         public ConfigurationTippingNzd Nzd { get; set; }
 
         [JsonProperty("pln")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pln")]
+#endif
         public ConfigurationTippingPln Pln { get; set; }
 
         [JsonProperty("sek")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sek")]
+#endif
         public ConfigurationTippingSek Sek { get; set; }
 
         [JsonProperty("sgd")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sgd")]
+#endif
         public ConfigurationTippingSgd Sgd { get; set; }
 
         [JsonProperty("usd")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("usd")]
+#endif
         public ConfigurationTippingUsd Usd { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingAud.cs b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingAud.cs
index bf4c37e660..fb2289a819 100644
--- a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingAud.cs
+++ b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingAud.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingAud : StripeEntity<ConfigurationTippingAud>
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingAud : StripeEntity<ConfigurationTippingAud>
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingAud : StripeEntity<ConfigurationTippingAud>
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingCad.cs b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingCad.cs
index 55ac511db2..84d0f0c50d 100644
--- a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingCad.cs
+++ b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingCad.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingCad : StripeEntity<ConfigurationTippingCad>
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingCad : StripeEntity<ConfigurationTippingCad>
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingCad : StripeEntity<ConfigurationTippingCad>
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingChf.cs b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingChf.cs
index c7ca04ce80..796cbefb5c 100644
--- a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingChf.cs
+++ b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingChf.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingChf : StripeEntity<ConfigurationTippingChf>
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingChf : StripeEntity<ConfigurationTippingChf>
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingChf : StripeEntity<ConfigurationTippingChf>
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingCzk.cs b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingCzk.cs
index 4914b68bf1..8b22b97a95 100644
--- a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingCzk.cs
+++ b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingCzk.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingCzk : StripeEntity<ConfigurationTippingCzk>
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingCzk : StripeEntity<ConfigurationTippingCzk>
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingCzk : StripeEntity<ConfigurationTippingCzk>
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingDkk.cs b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingDkk.cs
index 8335f55b45..ed6ec81889 100644
--- a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingDkk.cs
+++ b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingDkk.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingDkk : StripeEntity<ConfigurationTippingDkk>
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingDkk : StripeEntity<ConfigurationTippingDkk>
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingDkk : StripeEntity<ConfigurationTippingDkk>
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingEur.cs b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingEur.cs
index a5a8152866..e11b305f50 100644
--- a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingEur.cs
+++ b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingEur.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingEur : StripeEntity<ConfigurationTippingEur>
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingEur : StripeEntity<ConfigurationTippingEur>
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingEur : StripeEntity<ConfigurationTippingEur>
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingGbp.cs b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingGbp.cs
index 528cd239e0..45f84a92da 100644
--- a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingGbp.cs
+++ b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingGbp.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingGbp : StripeEntity<ConfigurationTippingGbp>
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingGbp : StripeEntity<ConfigurationTippingGbp>
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingGbp : StripeEntity<ConfigurationTippingGbp>
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingHkd.cs b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingHkd.cs
index 64a71e2746..dd74edafed 100644
--- a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingHkd.cs
+++ b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingHkd.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingHkd : StripeEntity<ConfigurationTippingHkd>
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingHkd : StripeEntity<ConfigurationTippingHkd>
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingHkd : StripeEntity<ConfigurationTippingHkd>
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingJpy.cs b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingJpy.cs
index 7b743c7011..a54c5c1527 100644
--- a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingJpy.cs
+++ b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingJpy.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingJpy : StripeEntity<ConfigurationTippingJpy>
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingJpy : StripeEntity<ConfigurationTippingJpy>
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingJpy : StripeEntity<ConfigurationTippingJpy>
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingMyr.cs b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingMyr.cs
index e5d3155fac..2334dad27c 100644
--- a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingMyr.cs
+++ b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingMyr.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingMyr : StripeEntity<ConfigurationTippingMyr>
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingMyr : StripeEntity<ConfigurationTippingMyr>
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingMyr : StripeEntity<ConfigurationTippingMyr>
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingNok.cs b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingNok.cs
index bf14b4e768..9fba265d95 100644
--- a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingNok.cs
+++ b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingNok.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingNok : StripeEntity<ConfigurationTippingNok>
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingNok : StripeEntity<ConfigurationTippingNok>
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingNok : StripeEntity<ConfigurationTippingNok>
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingNzd.cs b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingNzd.cs
index 3ef2cb674f..a56dc1d696 100644
--- a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingNzd.cs
+++ b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingNzd.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingNzd : StripeEntity<ConfigurationTippingNzd>
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingNzd : StripeEntity<ConfigurationTippingNzd>
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingNzd : StripeEntity<ConfigurationTippingNzd>
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingPln.cs b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingPln.cs
index 56a7c99117..1a6edca4b5 100644
--- a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingPln.cs
+++ b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingPln.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingPln : StripeEntity<ConfigurationTippingPln>
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingPln : StripeEntity<ConfigurationTippingPln>
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingPln : StripeEntity<ConfigurationTippingPln>
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingSek.cs b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingSek.cs
index 0b5234401a..3a5bfb6821 100644
--- a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingSek.cs
+++ b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingSek.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingSek : StripeEntity<ConfigurationTippingSek>
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingSek : StripeEntity<ConfigurationTippingSek>
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingSek : StripeEntity<ConfigurationTippingSek>
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingSgd.cs b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingSgd.cs
index 047b2d50ca..2dceca8d2c 100644
--- a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingSgd.cs
+++ b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingSgd.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingSgd : StripeEntity<ConfigurationTippingSgd>
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingSgd : StripeEntity<ConfigurationTippingSgd>
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingSgd : StripeEntity<ConfigurationTippingSgd>
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingUsd.cs b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingUsd.cs
index 39d5cf5edd..a6c5d6bfba 100644
--- a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingUsd.cs
+++ b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationTippingUsd.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingUsd : StripeEntity<ConfigurationTippingUsd>
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingUsd : StripeEntity<ConfigurationTippingUsd>
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingUsd : StripeEntity<ConfigurationTippingUsd>
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationVerifoneP400.cs b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationVerifoneP400.cs
index fc17cde7ed..48c466f980 100644
--- a/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationVerifoneP400.cs
+++ b/src/Stripe.net/Entities/Terminal/Configurations/ConfigurationVerifoneP400.cs
@@ -3,7 +3,13 @@ namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class ConfigurationVerifoneP400 : StripeEntity<ConfigurationVerifoneP400>
     {
         #region Expandable Splashscreen
@@ -13,6 +19,9 @@ public class ConfigurationVerifoneP400 : StripeEntity<ConfigurationVerifoneP400>
         /// A File ID representing an image you would like displayed on the reader.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string SplashscreenId
         {
             get => this.InternalSplashscreen?.Id;
@@ -26,6 +35,9 @@ public string SplashscreenId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public File Splashscreen
         {
             get => this.InternalSplashscreen?.ExpandedObject;
@@ -34,6 +46,10 @@ public File Splashscreen
 
         [JsonProperty("splashscreen")]
         [JsonConverter(typeof(ExpandableFieldConverter<File>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("splashscreen")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<File>))]
+#endif
         internal ExpandableField<File> InternalSplashscreen { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Terminal/ConnectionTokens/ConnectionToken.cs b/src/Stripe.net/Entities/Terminal/ConnectionTokens/ConnectionToken.cs
index 4dde566fd2..8294b947d5 100644
--- a/src/Stripe.net/Entities/Terminal/ConnectionTokens/ConnectionToken.cs
+++ b/src/Stripe.net/Entities/Terminal/ConnectionTokens/ConnectionToken.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A Connection Token is used by the Stripe Terminal SDK to connect to a reader.
@@ -15,6 +18,9 @@ public class ConnectionToken : StripeEntity<ConnectionToken>, IHasObject
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -24,12 +30,18 @@ public class ConnectionToken : StripeEntity<ConnectionToken>, IHasObject
         /// docs on scoping connection tokens</a>.
         /// </summary>
         [JsonProperty("location")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("location")]
+#endif
         public string Location { get; set; }
 
         /// <summary>
         /// Your application should pass this token to the Stripe Terminal SDK.
         /// </summary>
         [JsonProperty("secret")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("secret")]
+#endif
         public string Secret { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Locations/Location.cs b/src/Stripe.net/Entities/Terminal/Locations/Location.cs
index 1b88b87f48..8924d9de96 100644
--- a/src/Stripe.net/Entities/Terminal/Locations/Location.cs
+++ b/src/Stripe.net/Entities/Terminal/Locations/Location.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A Location represents a grouping of readers.
@@ -16,33 +19,52 @@ public class Location : StripeEntity<Location>, IHasId, IHasMetadata, IHasObject
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public Address Address { get; set; }
 
         /// <summary>
         /// The ID of a configuration that will be used to customize all readers in this location.
         /// </summary>
         [JsonProperty("configuration_overrides")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("configuration_overrides")]
+#endif
         public string ConfigurationOverrides { get; set; }
 
         /// <summary>
         /// Whether this object is deleted or not.
         /// </summary>
         [JsonProperty("deleted", NullValueHandling = NullValueHandling.Ignore)]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+        [STJS.JsonIgnore(Condition = STJS.JsonIgnoreCondition.WhenWritingNull)]
+#endif
         public bool? Deleted { get; set; }
 
         /// <summary>
         /// The display name of the location.
         /// </summary>
         [JsonProperty("display_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_name")]
+#endif
         public string DisplayName { get; set; }
 
         /// <summary>
@@ -50,6 +72,9 @@ public class Location : StripeEntity<Location>, IHasId, IHasMetadata, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -58,6 +83,9 @@ public class Location : StripeEntity<Location>, IHasId, IHasMetadata, IHasObject
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Readers/Reader.cs b/src/Stripe.net/Entities/Terminal/Readers/Reader.cs
index 37a4251767..098ca59fe5 100644
--- a/src/Stripe.net/Entities/Terminal/Readers/Reader.cs
+++ b/src/Stripe.net/Entities/Terminal/Readers/Reader.cs
@@ -4,6 +4,9 @@ namespace Stripe.Terminal
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A Reader represents a physical device for accepting payment details.
@@ -12,36 +15,55 @@ namespace Stripe.Terminal
     /// href="https://stripe.com/docs/terminal/payments/connect-reader">Connecting to a
     /// reader</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class Reader : StripeEntity<Reader>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// The most recent action performed by the reader.
         /// </summary>
         [JsonProperty("action")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("action")]
+#endif
         public ReaderAction Action { get; set; }
 
         /// <summary>
         /// Whether this object is deleted or not.
         /// </summary>
         [JsonProperty("deleted", NullValueHandling = NullValueHandling.Ignore)]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+        [STJS.JsonIgnore(Condition = STJS.JsonIgnoreCondition.WhenWritingNull)]
+#endif
         public bool? Deleted { get; set; }
 
         /// <summary>
         /// The current software version of the reader.
         /// </summary>
         [JsonProperty("device_sw_version")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("device_sw_version")]
+#endif
         public string DeviceSwVersion { get; set; }
 
         /// <summary>
@@ -53,18 +75,27 @@ public class Reader : StripeEntity<Reader>, IHasId, IHasMetadata, IHasObject
         /// <c>stripe_s700</c>, or <c>verifone_P400</c>.
         /// </summary>
         [JsonProperty("device_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("device_type")]
+#endif
         public string DeviceType { get; set; }
 
         /// <summary>
         /// The local IP address of the reader.
         /// </summary>
         [JsonProperty("ip_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip_address")]
+#endif
         public string IpAddress { get; set; }
 
         /// <summary>
         /// Custom label given to the reader for easier identification.
         /// </summary>
         [JsonProperty("label")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("label")]
+#endif
         public string Label { get; set; }
 
         /// <summary>
@@ -72,6 +103,9 @@ public class Reader : StripeEntity<Reader>, IHasId, IHasMetadata, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         #region Expandable Location
@@ -81,6 +115,9 @@ public class Reader : StripeEntity<Reader>, IHasId, IHasMetadata, IHasObject
         /// The location identifier of the reader.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string LocationId
         {
             get => this.InternalLocation?.Id;
@@ -94,6 +131,9 @@ public string LocationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Location Location
         {
             get => this.InternalLocation?.ExpandedObject;
@@ -102,6 +142,10 @@ public Location Location
 
         [JsonProperty("location")]
         [JsonConverter(typeof(ExpandableFieldConverter<Location>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("location")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Location>))]
+#endif
         internal ExpandableField<Location> InternalLocation { get; set; }
         #endregion
 
@@ -111,12 +155,18 @@ public Location Location
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Serial number of the reader.
         /// </summary>
         [JsonProperty("serial_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("serial_number")]
+#endif
         public string SerialNumber { get; set; }
 
         /// <summary>
@@ -125,6 +175,9 @@ public Location Location
         /// One of: <c>offline</c>, or <c>online</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Readers/ReaderAction.cs b/src/Stripe.net/Entities/Terminal/Readers/ReaderAction.cs
index fbd16f5b2f..5850508ad0 100644
--- a/src/Stripe.net/Entities/Terminal/Readers/ReaderAction.cs
+++ b/src/Stripe.net/Entities/Terminal/Readers/ReaderAction.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReaderAction : StripeEntity<ReaderAction>
     {
@@ -9,36 +12,54 @@ public class ReaderAction : StripeEntity<ReaderAction>
         /// Failure code, only set if status is <c>failed</c>.
         /// </summary>
         [JsonProperty("failure_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("failure_code")]
+#endif
         public string FailureCode { get; set; }
 
         /// <summary>
         /// Detailed failure message, only set if status is <c>failed</c>.
         /// </summary>
         [JsonProperty("failure_message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("failure_message")]
+#endif
         public string FailureMessage { get; set; }
 
         /// <summary>
         /// Represents a reader action to process a payment intent.
         /// </summary>
         [JsonProperty("process_payment_intent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("process_payment_intent")]
+#endif
         public ReaderActionProcessPaymentIntent ProcessPaymentIntent { get; set; }
 
         /// <summary>
         /// Represents a reader action to process a setup intent.
         /// </summary>
         [JsonProperty("process_setup_intent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("process_setup_intent")]
+#endif
         public ReaderActionProcessSetupIntent ProcessSetupIntent { get; set; }
 
         /// <summary>
         /// Represents a reader action to refund a payment.
         /// </summary>
         [JsonProperty("refund_payment")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_payment")]
+#endif
         public ReaderActionRefundPayment RefundPayment { get; set; }
 
         /// <summary>
         /// Represents a reader action to set the reader display.
         /// </summary>
         [JsonProperty("set_reader_display")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("set_reader_display")]
+#endif
         public ReaderActionSetReaderDisplay SetReaderDisplay { get; set; }
 
         /// <summary>
@@ -46,6 +67,9 @@ public class ReaderAction : StripeEntity<ReaderAction>
         /// One of: <c>failed</c>, <c>in_progress</c>, or <c>succeeded</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -54,6 +78,9 @@ public class ReaderAction : StripeEntity<ReaderAction>
         /// <c>refund_payment</c>, or <c>set_reader_display</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Readers/ReaderActionProcessPaymentIntent.cs b/src/Stripe.net/Entities/Terminal/Readers/ReaderActionProcessPaymentIntent.cs
index 6405fb8bd3..8fbe51b34c 100644
--- a/src/Stripe.net/Entities/Terminal/Readers/ReaderActionProcessPaymentIntent.cs
+++ b/src/Stripe.net/Entities/Terminal/Readers/ReaderActionProcessPaymentIntent.cs
@@ -3,7 +3,13 @@ namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class ReaderActionProcessPaymentIntent : StripeEntity<ReaderActionProcessPaymentIntent>
     {
         #region Expandable PaymentIntent
@@ -13,6 +19,9 @@ public class ReaderActionProcessPaymentIntent : StripeEntity<ReaderActionProcess
         /// Most recent PaymentIntent processed by the reader.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string PaymentIntentId
         {
             get => this.InternalPaymentIntent?.Id;
@@ -26,6 +35,9 @@ public string PaymentIntentId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PaymentIntent PaymentIntent
         {
             get => this.InternalPaymentIntent?.ExpandedObject;
@@ -34,6 +46,10 @@ public PaymentIntent PaymentIntent
 
         [JsonProperty("payment_intent")]
         [JsonConverter(typeof(ExpandableFieldConverter<PaymentIntent>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_intent")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PaymentIntent>))]
+#endif
         internal ExpandableField<PaymentIntent> InternalPaymentIntent { get; set; }
         #endregion
 
@@ -41,6 +57,9 @@ public PaymentIntent PaymentIntent
         /// Represents a per-transaction override of a reader configuration.
         /// </summary>
         [JsonProperty("process_config")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("process_config")]
+#endif
         public ReaderActionProcessPaymentIntentProcessConfig ProcessConfig { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Readers/ReaderActionProcessPaymentIntentProcessConfig.cs b/src/Stripe.net/Entities/Terminal/Readers/ReaderActionProcessPaymentIntentProcessConfig.cs
index 128d1581e5..db1fdd568e 100644
--- a/src/Stripe.net/Entities/Terminal/Readers/ReaderActionProcessPaymentIntentProcessConfig.cs
+++ b/src/Stripe.net/Entities/Terminal/Readers/ReaderActionProcessPaymentIntentProcessConfig.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReaderActionProcessPaymentIntentProcessConfig : StripeEntity<ReaderActionProcessPaymentIntentProcessConfig>
     {
@@ -9,18 +12,27 @@ public class ReaderActionProcessPaymentIntentProcessConfig : StripeEntity<Reader
         /// Enable customer initiated cancellation when processing this payment.
         /// </summary>
         [JsonProperty("enable_customer_cancellation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enable_customer_cancellation")]
+#endif
         public bool EnableCustomerCancellation { get; set; }
 
         /// <summary>
         /// Override showing a tipping selection screen on this transaction.
         /// </summary>
         [JsonProperty("skip_tipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("skip_tipping")]
+#endif
         public bool SkipTipping { get; set; }
 
         /// <summary>
         /// Represents a per-transaction tipping configuration.
         /// </summary>
         [JsonProperty("tipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tipping")]
+#endif
         public ReaderActionProcessPaymentIntentProcessConfigTipping Tipping { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Readers/ReaderActionProcessPaymentIntentProcessConfigTipping.cs b/src/Stripe.net/Entities/Terminal/Readers/ReaderActionProcessPaymentIntentProcessConfigTipping.cs
index 1cdc27706d..e163eef35a 100644
--- a/src/Stripe.net/Entities/Terminal/Readers/ReaderActionProcessPaymentIntentProcessConfigTipping.cs
+++ b/src/Stripe.net/Entities/Terminal/Readers/ReaderActionProcessPaymentIntentProcessConfigTipping.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReaderActionProcessPaymentIntentProcessConfigTipping : StripeEntity<ReaderActionProcessPaymentIntentProcessConfigTipping>
     {
@@ -11,6 +14,9 @@ public class ReaderActionProcessPaymentIntentProcessConfigTipping : StripeEntity
         /// to represent $1.00 or 100 to represent ¥100, a zero-decimal currency).
         /// </summary>
         [JsonProperty("amount_eligible")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_eligible")]
+#endif
         public long AmountEligible { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Readers/ReaderActionProcessSetupIntent.cs b/src/Stripe.net/Entities/Terminal/Readers/ReaderActionProcessSetupIntent.cs
index 5ef50f1f38..9b762a4eb8 100644
--- a/src/Stripe.net/Entities/Terminal/Readers/ReaderActionProcessSetupIntent.cs
+++ b/src/Stripe.net/Entities/Terminal/Readers/ReaderActionProcessSetupIntent.cs
@@ -3,7 +3,13 @@ namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class ReaderActionProcessSetupIntent : StripeEntity<ReaderActionProcessSetupIntent>
     {
         /// <summary>
@@ -12,12 +18,18 @@ public class ReaderActionProcessSetupIntent : StripeEntity<ReaderActionProcessSe
         /// generate a card PaymentMethod.
         /// </summary>
         [JsonProperty("generated_card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("generated_card")]
+#endif
         public string GeneratedCard { get; set; }
 
         /// <summary>
         /// Represents a per-setup override of a reader configuration.
         /// </summary>
         [JsonProperty("process_config")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("process_config")]
+#endif
         public ReaderActionProcessSetupIntentProcessConfig ProcessConfig { get; set; }
 
         #region Expandable SetupIntent
@@ -27,6 +39,9 @@ public class ReaderActionProcessSetupIntent : StripeEntity<ReaderActionProcessSe
         /// Most recent SetupIntent processed by the reader.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string SetupIntentId
         {
             get => this.InternalSetupIntent?.Id;
@@ -40,6 +55,9 @@ public string SetupIntentId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public SetupIntent SetupIntent
         {
             get => this.InternalSetupIntent?.ExpandedObject;
@@ -48,6 +66,10 @@ public SetupIntent SetupIntent
 
         [JsonProperty("setup_intent")]
         [JsonConverter(typeof(ExpandableFieldConverter<SetupIntent>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_intent")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<SetupIntent>))]
+#endif
         internal ExpandableField<SetupIntent> InternalSetupIntent { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Terminal/Readers/ReaderActionProcessSetupIntentProcessConfig.cs b/src/Stripe.net/Entities/Terminal/Readers/ReaderActionProcessSetupIntentProcessConfig.cs
index f072e59ab7..f8251ad7cc 100644
--- a/src/Stripe.net/Entities/Terminal/Readers/ReaderActionProcessSetupIntentProcessConfig.cs
+++ b/src/Stripe.net/Entities/Terminal/Readers/ReaderActionProcessSetupIntentProcessConfig.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReaderActionProcessSetupIntentProcessConfig : StripeEntity<ReaderActionProcessSetupIntentProcessConfig>
     {
@@ -9,6 +12,9 @@ public class ReaderActionProcessSetupIntentProcessConfig : StripeEntity<ReaderAc
         /// Enable customer initiated cancellation when processing this SetupIntent.
         /// </summary>
         [JsonProperty("enable_customer_cancellation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enable_customer_cancellation")]
+#endif
         public bool EnableCustomerCancellation { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Readers/ReaderActionRefundPayment.cs b/src/Stripe.net/Entities/Terminal/Readers/ReaderActionRefundPayment.cs
index 80d472dd27..dc58f17830 100644
--- a/src/Stripe.net/Entities/Terminal/Readers/ReaderActionRefundPayment.cs
+++ b/src/Stripe.net/Entities/Terminal/Readers/ReaderActionRefundPayment.cs
@@ -4,13 +4,22 @@ namespace Stripe.Terminal
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class ReaderActionRefundPayment : StripeEntity<ReaderActionRefundPayment>, IHasMetadata
     {
         /// <summary>
         /// The amount being refunded.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         #region Expandable Charge
@@ -20,6 +29,9 @@ public class ReaderActionRefundPayment : StripeEntity<ReaderActionRefundPayment>
         /// Charge that is being refunded.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string ChargeId
         {
             get => this.InternalCharge?.Id;
@@ -33,6 +45,9 @@ public string ChargeId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Charge Charge
         {
             get => this.InternalCharge?.ExpandedObject;
@@ -41,6 +56,10 @@ public Charge Charge
 
         [JsonProperty("charge")]
         [JsonConverter(typeof(ExpandableFieldConverter<Charge>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("charge")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Charge>))]
+#endif
         internal ExpandableField<Charge> InternalCharge { get; set; }
         #endregion
 
@@ -50,6 +69,9 @@ public Charge Charge
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         #region Expandable PaymentIntent
@@ -59,6 +81,9 @@ public Charge Charge
         /// Payment intent that is being refunded.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string PaymentIntentId
         {
             get => this.InternalPaymentIntent?.Id;
@@ -72,6 +97,9 @@ public string PaymentIntentId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public PaymentIntent PaymentIntent
         {
             get => this.InternalPaymentIntent?.ExpandedObject;
@@ -80,6 +108,10 @@ public PaymentIntent PaymentIntent
 
         [JsonProperty("payment_intent")]
         [JsonConverter(typeof(ExpandableFieldConverter<PaymentIntent>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_intent")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<PaymentIntent>))]
+#endif
         internal ExpandableField<PaymentIntent> InternalPaymentIntent { get; set; }
         #endregion
 
@@ -88,6 +120,9 @@ public PaymentIntent PaymentIntent
         /// One of: <c>duplicate</c>, <c>fraudulent</c>, or <c>requested_by_customer</c>.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
 
         #region Expandable Refund
@@ -97,6 +132,9 @@ public PaymentIntent PaymentIntent
         /// Unique identifier for the refund object.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string RefundId
         {
             get => this.InternalRefund?.Id;
@@ -110,6 +148,9 @@ public string RefundId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Refund Refund
         {
             get => this.InternalRefund?.ExpandedObject;
@@ -118,6 +159,10 @@ public Refund Refund
 
         [JsonProperty("refund")]
         [JsonConverter(typeof(ExpandableFieldConverter<Refund>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Refund>))]
+#endif
         internal ExpandableField<Refund> InternalRefund { get; set; }
         #endregion
 
@@ -129,12 +174,18 @@ public Refund Refund
         /// created the charge.
         /// </summary>
         [JsonProperty("refund_application_fee")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_application_fee")]
+#endif
         public bool RefundApplicationFee { get; set; }
 
         /// <summary>
         /// Represents a per-transaction override of a reader configuration.
         /// </summary>
         [JsonProperty("refund_payment_config")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_payment_config")]
+#endif
         public ReaderActionRefundPaymentRefundPaymentConfig RefundPaymentConfig { get; set; }
 
         /// <summary>
@@ -144,6 +195,9 @@ public Refund Refund
         /// created the charge.
         /// </summary>
         [JsonProperty("reverse_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reverse_transfer")]
+#endif
         public bool ReverseTransfer { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Readers/ReaderActionRefundPaymentRefundPaymentConfig.cs b/src/Stripe.net/Entities/Terminal/Readers/ReaderActionRefundPaymentRefundPaymentConfig.cs
index 6dff96f149..a461ecdaf6 100644
--- a/src/Stripe.net/Entities/Terminal/Readers/ReaderActionRefundPaymentRefundPaymentConfig.cs
+++ b/src/Stripe.net/Entities/Terminal/Readers/ReaderActionRefundPaymentRefundPaymentConfig.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReaderActionRefundPaymentRefundPaymentConfig : StripeEntity<ReaderActionRefundPaymentRefundPaymentConfig>
     {
@@ -9,6 +12,9 @@ public class ReaderActionRefundPaymentRefundPaymentConfig : StripeEntity<ReaderA
         /// Enable customer initiated cancellation when refunding this payment.
         /// </summary>
         [JsonProperty("enable_customer_cancellation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enable_customer_cancellation")]
+#endif
         public bool EnableCustomerCancellation { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Readers/ReaderActionSetReaderDisplay.cs b/src/Stripe.net/Entities/Terminal/Readers/ReaderActionSetReaderDisplay.cs
index 1a491f5443..531eccf2d6 100644
--- a/src/Stripe.net/Entities/Terminal/Readers/ReaderActionSetReaderDisplay.cs
+++ b/src/Stripe.net/Entities/Terminal/Readers/ReaderActionSetReaderDisplay.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReaderActionSetReaderDisplay : StripeEntity<ReaderActionSetReaderDisplay>
     {
@@ -9,12 +12,18 @@ public class ReaderActionSetReaderDisplay : StripeEntity<ReaderActionSetReaderDi
         /// Cart object to be displayed by the reader.
         /// </summary>
         [JsonProperty("cart")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cart")]
+#endif
         public ReaderActionSetReaderDisplayCart Cart { get; set; }
 
         /// <summary>
         /// Type of information to be displayed by the reader.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Readers/ReaderActionSetReaderDisplayCart.cs b/src/Stripe.net/Entities/Terminal/Readers/ReaderActionSetReaderDisplayCart.cs
index e53b36c692..da26070caf 100644
--- a/src/Stripe.net/Entities/Terminal/Readers/ReaderActionSetReaderDisplayCart.cs
+++ b/src/Stripe.net/Entities/Terminal/Readers/ReaderActionSetReaderDisplayCart.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReaderActionSetReaderDisplayCart : StripeEntity<ReaderActionSetReaderDisplayCart>
     {
@@ -12,12 +15,18 @@ public class ReaderActionSetReaderDisplayCart : StripeEntity<ReaderActionSetRead
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// List of line items in the cart.
         /// </summary>
         [JsonProperty("line_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line_items")]
+#endif
         public List<ReaderActionSetReaderDisplayCartLineItem> LineItems { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class ReaderActionSetReaderDisplayCart : StripeEntity<ReaderActionSetRead
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax")]
+#endif
         public long? Tax { get; set; }
 
         /// <summary>
@@ -32,6 +44,9 @@ public class ReaderActionSetReaderDisplayCart : StripeEntity<ReaderActionSetRead
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("total")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("total")]
+#endif
         public long Total { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Terminal/Readers/ReaderActionSetReaderDisplayCartLineItem.cs b/src/Stripe.net/Entities/Terminal/Readers/ReaderActionSetReaderDisplayCartLineItem.cs
index 76af470567..aee697d64f 100644
--- a/src/Stripe.net/Entities/Terminal/Readers/ReaderActionSetReaderDisplayCartLineItem.cs
+++ b/src/Stripe.net/Entities/Terminal/Readers/ReaderActionSetReaderDisplayCartLineItem.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReaderActionSetReaderDisplayCartLineItem : StripeEntity<ReaderActionSetReaderDisplayCartLineItem>
     {
@@ -10,18 +13,27 @@ public class ReaderActionSetReaderDisplayCartLineItem : StripeEntity<ReaderActio
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
         /// Description of the line item.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// The quantity of the line item.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long Quantity { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/TestHelpers/TestClocks/TestClock.cs b/src/Stripe.net/Entities/TestHelpers/TestClocks/TestClock.cs
index 5d968b8270..22dbf69e6d 100644
--- a/src/Stripe.net/Entities/TestHelpers/TestClocks/TestClock.cs
+++ b/src/Stripe.net/Entities/TestHelpers/TestClocks/TestClock.cs
@@ -4,6 +4,9 @@ namespace Stripe.TestHelpers
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A test clock enables deterministic control over objects in testmode. With a test clock,
@@ -19,12 +22,18 @@ public class TestClock : StripeEntity<TestClock>, IHasId, IHasObject
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -32,12 +41,20 @@ public class TestClock : StripeEntity<TestClock>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// Whether this object is deleted or not.
         /// </summary>
         [JsonProperty("deleted", NullValueHandling = NullValueHandling.Ignore)]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+        [STJS.JsonIgnore(Condition = STJS.JsonIgnoreCondition.WhenWritingNull)]
+#endif
         public bool? Deleted { get; set; }
 
         /// <summary>
@@ -45,6 +62,10 @@ public class TestClock : StripeEntity<TestClock>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("deletes_after")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deletes_after")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime DeletesAfter { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -52,6 +73,10 @@ public class TestClock : StripeEntity<TestClock>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("frozen_time")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("frozen_time")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime FrozenTime { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -59,12 +84,18 @@ public class TestClock : StripeEntity<TestClock>, IHasId, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
         /// The custom name supplied at creation.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -72,9 +103,15 @@ public class TestClock : StripeEntity<TestClock>, IHasId, IHasObject
         /// One of: <c>advancing</c>, <c>internal_failure</c>, or <c>ready</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         [JsonProperty("status_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_details")]
+#endif
         public TestClockStatusDetails StatusDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/TestHelpers/TestClocks/TestClockStatusDetails.cs b/src/Stripe.net/Entities/TestHelpers/TestClocks/TestClockStatusDetails.cs
index 80f5c7edf7..8f4804011f 100644
--- a/src/Stripe.net/Entities/TestHelpers/TestClocks/TestClockStatusDetails.cs
+++ b/src/Stripe.net/Entities/TestHelpers/TestClocks/TestClockStatusDetails.cs
@@ -2,10 +2,16 @@
 namespace Stripe.TestHelpers
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TestClockStatusDetails : StripeEntity<TestClockStatusDetails>
     {
         [JsonProperty("advancing")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("advancing")]
+#endif
         public TestClockStatusDetailsAdvancing Advancing { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/TestHelpers/TestClocks/TestClockStatusDetailsAdvancing.cs b/src/Stripe.net/Entities/TestHelpers/TestClocks/TestClockStatusDetailsAdvancing.cs
index f72d84da0e..66a9a8638e 100644
--- a/src/Stripe.net/Entities/TestHelpers/TestClocks/TestClockStatusDetailsAdvancing.cs
+++ b/src/Stripe.net/Entities/TestHelpers/TestClocks/TestClockStatusDetailsAdvancing.cs
@@ -4,6 +4,9 @@ namespace Stripe.TestHelpers
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TestClockStatusDetailsAdvancing : StripeEntity<TestClockStatusDetailsAdvancing>
     {
@@ -12,6 +15,10 @@ public class TestClockStatusDetailsAdvancing : StripeEntity<TestClockStatusDetai
         /// </summary>
         [JsonProperty("target_frozen_time")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("target_frozen_time")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime TargetFrozenTime { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
     }
 }
diff --git a/src/Stripe.net/Entities/Tokens/Token.cs b/src/Stripe.net/Entities/Tokens/Token.cs
index 69050a26ec..eb5352e95c 100644
--- a/src/Stripe.net/Entities/Tokens/Token.cs
+++ b/src/Stripe.net/Entities/Tokens/Token.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Tokenization is the process Stripe uses to collect sensitive card or bank account
@@ -31,12 +34,18 @@ public class Token : StripeEntity<Token>, IHasId, IHasObject
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -50,6 +59,9 @@ public class Token : StripeEntity<Token>, IHasId, IHasObject
         /// and transfers</a>.
         /// </summary>
         [JsonProperty("bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_account")]
+#endif
         public BankAccount BankAccount { get; set; }
 
         /// <summary>
@@ -61,12 +73,18 @@ public class Token : StripeEntity<Token>, IHasId, IHasObject
         /// Sources</a>.
         /// </summary>
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public Card Card { get; set; }
 
         /// <summary>
         /// IP address of the client that generates the token.
         /// </summary>
         [JsonProperty("client_ip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("client_ip")]
+#endif
         public string ClientIp { get; set; }
 
         /// <summary>
@@ -74,6 +92,10 @@ public class Token : StripeEntity<Token>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -81,18 +103,27 @@ public class Token : StripeEntity<Token>, IHasId, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
         /// Type of the token: <c>account</c>, <c>bank_account</c>, <c>card</c>, or <c>pii</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
         /// Determines if you have already used this token (you can only use tokens once).
         /// </summary>
         [JsonProperty("used")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("used")]
+#endif
         public bool Used { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Topups/Topup.cs b/src/Stripe.net/Entities/Topups/Topup.cs
index e74c75fda7..e2754310ba 100644
--- a/src/Stripe.net/Entities/Topups/Topup.cs
+++ b/src/Stripe.net/Entities/Topups/Topup.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// To top up your Stripe balance, you create a top-up object. You can retrieve individual
@@ -13,24 +16,36 @@ namespace Stripe
     /// Related guide: <a href="https://stripe.com/docs/connect/top-ups">Topping up your
     /// platform account</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class Topup : StripeEntity<Topup>, IHasId, IHasMetadata, IHasObject, IBalanceTransactionSource
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Amount transferred.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         #region Expandable BalanceTransaction
@@ -41,6 +56,9 @@ public class Topup : StripeEntity<Topup>, IHasId, IHasMetadata, IHasObject, IBal
         /// balance. May not be specified depending on status of top-up.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string BalanceTransactionId
         {
             get => this.InternalBalanceTransaction?.Id;
@@ -55,6 +73,9 @@ public string BalanceTransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public BalanceTransaction BalanceTransaction
         {
             get => this.InternalBalanceTransaction?.ExpandedObject;
@@ -63,6 +84,10 @@ public BalanceTransaction BalanceTransaction
 
         [JsonProperty("balance_transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<BalanceTransaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("balance_transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<BalanceTransaction>))]
+#endif
         internal ExpandableField<BalanceTransaction> InternalBalanceTransaction { get; set; }
         #endregion
 
@@ -71,6 +96,10 @@ public BalanceTransaction BalanceTransaction
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -79,12 +108,18 @@ public BalanceTransaction BalanceTransaction
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -94,6 +129,10 @@ public BalanceTransaction BalanceTransaction
         /// </summary>
         [JsonProperty("expected_availability_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expected_availability_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpectedAvailabilityDate { get; set; }
 
         /// <summary>
@@ -101,12 +140,18 @@ public BalanceTransaction BalanceTransaction
         /// href="https://stripe.com/docs/api#errors">the errors section</a> for a list of codes).
         /// </summary>
         [JsonProperty("failure_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("failure_code")]
+#endif
         public string FailureCode { get; set; }
 
         /// <summary>
         /// Message to user further explaining reason for top-up failure if available.
         /// </summary>
         [JsonProperty("failure_message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("failure_message")]
+#endif
         public string FailureMessage { get; set; }
 
         /// <summary>
@@ -114,6 +159,9 @@ public BalanceTransaction BalanceTransaction
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -122,12 +170,18 @@ public BalanceTransaction BalanceTransaction
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The source field is deprecated. It might not always be present in the API response.
         /// </summary>
         [JsonProperty("source")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source")]
+#endif
         public Source Source { get; set; }
 
         /// <summary>
@@ -135,6 +189,9 @@ public BalanceTransaction BalanceTransaction
         /// must contain at least one letter.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
 
         /// <summary>
@@ -144,12 +201,18 @@ public BalanceTransaction BalanceTransaction
         /// <c>succeeded</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
         /// A string that identifies this top-up as part of a group.
         /// </summary>
         [JsonProperty("transfer_group")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_group")]
+#endif
         public string TransferGroup { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/TransferReversals/TransferReversal.cs b/src/Stripe.net/Entities/TransferReversals/TransferReversal.cs
index 46387dddc7..3a11dc23e2 100644
--- a/src/Stripe.net/Entities/TransferReversals/TransferReversal.cs
+++ b/src/Stripe.net/Entities/TransferReversals/TransferReversal.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// <a href="https://stripe.com/docs/connect">Stripe Connect</a> platforms can reverse
@@ -22,24 +25,36 @@ namespace Stripe
     /// href="https://stripe.com/docs/connect/separate-charges-and-transfers#reverse-transfers">Reverse
     /// transfers</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class TransferReversal : StripeEntity<TransferReversal>, IHasId, IHasMetadata, IHasObject, IBalanceTransactionSource
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Amount, in cents (or local equivalent).
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         #region Expandable BalanceTransaction
@@ -49,6 +64,9 @@ public class TransferReversal : StripeEntity<TransferReversal>, IHasId, IHasMeta
         /// Balance transaction that describes the impact on your account balance.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string BalanceTransactionId
         {
             get => this.InternalBalanceTransaction?.Id;
@@ -62,6 +80,9 @@ public string BalanceTransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public BalanceTransaction BalanceTransaction
         {
             get => this.InternalBalanceTransaction?.ExpandedObject;
@@ -70,6 +91,10 @@ public BalanceTransaction BalanceTransaction
 
         [JsonProperty("balance_transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<BalanceTransaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("balance_transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<BalanceTransaction>))]
+#endif
         internal ExpandableField<BalanceTransaction> InternalBalanceTransaction { get; set; }
         #endregion
 
@@ -78,6 +103,10 @@ public BalanceTransaction BalanceTransaction
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -86,6 +115,9 @@ public BalanceTransaction BalanceTransaction
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         #region Expandable DestinationPaymentRefund
@@ -95,6 +127,9 @@ public BalanceTransaction BalanceTransaction
         /// Linked payment refund for the transfer reversal.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DestinationPaymentRefundId
         {
             get => this.InternalDestinationPaymentRefund?.Id;
@@ -108,6 +143,9 @@ public string DestinationPaymentRefundId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Refund DestinationPaymentRefund
         {
             get => this.InternalDestinationPaymentRefund?.ExpandedObject;
@@ -116,6 +154,10 @@ public Refund DestinationPaymentRefund
 
         [JsonProperty("destination_payment_refund")]
         [JsonConverter(typeof(ExpandableFieldConverter<Refund>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination_payment_refund")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Refund>))]
+#endif
         internal ExpandableField<Refund> InternalDestinationPaymentRefund { get; set; }
         #endregion
 
@@ -125,6 +167,9 @@ public Refund DestinationPaymentRefund
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         #region Expandable SourceRefund
@@ -134,6 +179,9 @@ public Refund DestinationPaymentRefund
         /// ID of the refund responsible for the transfer reversal.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string SourceRefundId
         {
             get => this.InternalSourceRefund?.Id;
@@ -147,6 +195,9 @@ public string SourceRefundId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Refund SourceRefund
         {
             get => this.InternalSourceRefund?.ExpandedObject;
@@ -155,6 +206,10 @@ public Refund SourceRefund
 
         [JsonProperty("source_refund")]
         [JsonConverter(typeof(ExpandableFieldConverter<Refund>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source_refund")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Refund>))]
+#endif
         internal ExpandableField<Refund> InternalSourceRefund { get; set; }
         #endregion
 
@@ -165,6 +220,9 @@ public Refund SourceRefund
         /// ID of the transfer that was reversed.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string TransferId
         {
             get => this.InternalTransfer?.Id;
@@ -178,6 +236,9 @@ public string TransferId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Transfer Transfer
         {
             get => this.InternalTransfer?.ExpandedObject;
@@ -186,6 +247,10 @@ public Transfer Transfer
 
         [JsonProperty("transfer")]
         [JsonConverter(typeof(ExpandableFieldConverter<Transfer>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Transfer>))]
+#endif
         internal ExpandableField<Transfer> InternalTransfer { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Transfers/Transfer.cs b/src/Stripe.net/Entities/Transfers/Transfer.cs
index 543ec0303e..b52051b882 100644
--- a/src/Stripe.net/Entities/Transfers/Transfer.cs
+++ b/src/Stripe.net/Entities/Transfers/Transfer.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A <c>Transfer</c> object is created when you move funds between Stripe accounts as part
@@ -20,24 +23,36 @@ namespace Stripe
     /// href="https://stripe.com/docs/connect/separate-charges-and-transfers">Creating separate
     /// charges and transfers</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class Transfer : StripeEntity<Transfer>, IHasId, IHasMetadata, IHasObject, IBalanceTransactionSource
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Amount in cents (or local equivalent) to be transferred.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -45,6 +60,9 @@ public class Transfer : StripeEntity<Transfer>, IHasId, IHasMetadata, IHasObject
         /// the transfer if a partial reversal was issued).
         /// </summary>
         [JsonProperty("amount_reversed")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_reversed")]
+#endif
         public long AmountReversed { get; set; }
 
         #region Expandable BalanceTransaction
@@ -54,6 +72,9 @@ public class Transfer : StripeEntity<Transfer>, IHasId, IHasMetadata, IHasObject
         /// Balance transaction that describes the impact of this transfer on your account balance.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string BalanceTransactionId
         {
             get => this.InternalBalanceTransaction?.Id;
@@ -67,6 +88,9 @@ public string BalanceTransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public BalanceTransaction BalanceTransaction
         {
             get => this.InternalBalanceTransaction?.ExpandedObject;
@@ -75,6 +99,10 @@ public BalanceTransaction BalanceTransaction
 
         [JsonProperty("balance_transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<BalanceTransaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("balance_transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<BalanceTransaction>))]
+#endif
         internal ExpandableField<BalanceTransaction> InternalBalanceTransaction { get; set; }
         #endregion
 
@@ -83,6 +111,10 @@ public BalanceTransaction BalanceTransaction
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -91,12 +123,18 @@ public BalanceTransaction BalanceTransaction
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         #region Expandable Destination
@@ -106,6 +144,9 @@ public BalanceTransaction BalanceTransaction
         /// ID of the Stripe account the transfer was sent to.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DestinationId
         {
             get => this.InternalDestination?.Id;
@@ -119,6 +160,9 @@ public string DestinationId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Account Destination
         {
             get => this.InternalDestination?.ExpandedObject;
@@ -127,6 +171,10 @@ public Account Destination
 
         [JsonProperty("destination")]
         [JsonConverter(typeof(ExpandableFieldConverter<Account>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Account>))]
+#endif
         internal ExpandableField<Account> InternalDestination { get; set; }
         #endregion
 
@@ -138,6 +186,9 @@ public Account Destination
         /// destination account received for the transfer.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string DestinationPaymentId
         {
             get => this.InternalDestinationPayment?.Id;
@@ -152,6 +203,9 @@ public string DestinationPaymentId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Charge DestinationPayment
         {
             get => this.InternalDestinationPayment?.ExpandedObject;
@@ -160,6 +214,10 @@ public Charge DestinationPayment
 
         [JsonProperty("destination_payment")]
         [JsonConverter(typeof(ExpandableFieldConverter<Charge>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination_payment")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Charge>))]
+#endif
         internal ExpandableField<Charge> InternalDestinationPayment { get; set; }
         #endregion
 
@@ -168,6 +226,9 @@ public Charge DestinationPayment
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -176,12 +237,18 @@ public Charge DestinationPayment
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// A list of reversals that have been applied to the transfer.
         /// </summary>
         [JsonProperty("reversals")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reversals")]
+#endif
         public StripeList<TransferReversal> Reversals { get; set; }
 
         /// <summary>
@@ -189,6 +256,9 @@ public Charge DestinationPayment
         /// reversed, this attribute will still be false.
         /// </summary>
         [JsonProperty("reversed")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reversed")]
+#endif
         public bool Reversed { get; set; }
 
         #region Expandable SourceTransaction
@@ -199,6 +269,9 @@ public Charge DestinationPayment
         /// from the available balance.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string SourceTransactionId
         {
             get => this.InternalSourceTransaction?.Id;
@@ -213,6 +286,9 @@ public string SourceTransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Charge SourceTransaction
         {
             get => this.InternalSourceTransaction?.ExpandedObject;
@@ -221,6 +297,10 @@ public Charge SourceTransaction
 
         [JsonProperty("source_transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<Charge>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source_transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Charge>))]
+#endif
         internal ExpandableField<Charge> InternalSourceTransaction { get; set; }
         #endregion
 
@@ -229,6 +309,9 @@ public Charge SourceTransaction
         /// <c>bank_account</c>.
         /// </summary>
         [JsonProperty("source_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source_type")]
+#endif
         public string SourceType { get; set; }
 
         /// <summary>
@@ -237,6 +320,9 @@ public Charge SourceTransaction
         /// documentation</a> for details.
         /// </summary>
         [JsonProperty("transfer_group")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_group")]
+#endif
         public string TransferGroup { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/CreditReversals/CreditReversal.cs b/src/Stripe.net/Entities/Treasury/CreditReversals/CreditReversal.cs
index 41c85be1f5..0de64ad359 100644
--- a/src/Stripe.net/Entities/Treasury/CreditReversals/CreditReversal.cs
+++ b/src/Stripe.net/Entities/Treasury/CreditReversals/CreditReversal.cs
@@ -5,6 +5,9 @@ namespace Stripe.Treasury
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// You can reverse some <a
@@ -12,24 +15,36 @@ namespace Stripe.Treasury
     /// their network and source flow. Reversing a ReceivedCredit leads to the creation of a new
     /// object known as a CreditReversal.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class CreditReversal : StripeEntity<CreditReversal>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Amount (in cents) transferred.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -37,6 +52,10 @@ public class CreditReversal : StripeEntity<CreditReversal>, IHasId, IHasMetadata
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -45,12 +64,18 @@ public class CreditReversal : StripeEntity<CreditReversal>, IHasId, IHasMetadata
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// The FinancialAccount to reverse funds from.
         /// </summary>
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public string FinancialAccount { get; set; }
 
         /// <summary>
@@ -59,6 +84,9 @@ public class CreditReversal : StripeEntity<CreditReversal>, IHasId, IHasMetadata
         /// under Stripe's money transmission licenses.
         /// </summary>
         [JsonProperty("hosted_regulatory_receipt_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hosted_regulatory_receipt_url")]
+#endif
         public string HostedRegulatoryReceiptUrl { get; set; }
 
         /// <summary>
@@ -66,6 +94,9 @@ public class CreditReversal : StripeEntity<CreditReversal>, IHasId, IHasMetadata
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -74,6 +105,9 @@ public class CreditReversal : StripeEntity<CreditReversal>, IHasId, IHasMetadata
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -81,12 +115,18 @@ public class CreditReversal : StripeEntity<CreditReversal>, IHasId, IHasMetadata
         /// One of: <c>ach</c>, or <c>stripe</c>.
         /// </summary>
         [JsonProperty("network")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network")]
+#endif
         public string Network { get; set; }
 
         /// <summary>
         /// The ReceivedCredit being reversed.
         /// </summary>
         [JsonProperty("received_credit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("received_credit")]
+#endif
         public string ReceivedCredit { get; set; }
 
         /// <summary>
@@ -94,9 +134,15 @@ public class CreditReversal : StripeEntity<CreditReversal>, IHasId, IHasMetadata
         /// One of: <c>canceled</c>, <c>posted</c>, or <c>processing</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         [JsonProperty("status_transitions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_transitions")]
+#endif
         public CreditReversalStatusTransitions StatusTransitions { get; set; }
 
         #region Expandable Transaction
@@ -106,6 +152,9 @@ public class CreditReversal : StripeEntity<CreditReversal>, IHasId, IHasMetadata
         /// The Transaction associated with this object.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string TransactionId
         {
             get => this.InternalTransaction?.Id;
@@ -119,6 +168,9 @@ public string TransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Transaction Transaction
         {
             get => this.InternalTransaction?.ExpandedObject;
@@ -127,6 +179,10 @@ public Transaction Transaction
 
         [JsonProperty("transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<Transaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Transaction>))]
+#endif
         internal ExpandableField<Transaction> InternalTransaction { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Treasury/CreditReversals/CreditReversalStatusTransitions.cs b/src/Stripe.net/Entities/Treasury/CreditReversals/CreditReversalStatusTransitions.cs
index 33d636c0f2..8f5ce5eaae 100644
--- a/src/Stripe.net/Entities/Treasury/CreditReversals/CreditReversalStatusTransitions.cs
+++ b/src/Stripe.net/Entities/Treasury/CreditReversals/CreditReversalStatusTransitions.cs
@@ -4,6 +4,9 @@ namespace Stripe.Treasury
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditReversalStatusTransitions : StripeEntity<CreditReversalStatusTransitions>
     {
@@ -12,6 +15,10 @@ public class CreditReversalStatusTransitions : StripeEntity<CreditReversalStatus
         /// </summary>
         [JsonProperty("posted_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("posted_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? PostedAt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/DebitReversals/DebitReversal.cs b/src/Stripe.net/Entities/Treasury/DebitReversals/DebitReversal.cs
index 3d109c607c..0d730f9f85 100644
--- a/src/Stripe.net/Entities/Treasury/DebitReversals/DebitReversal.cs
+++ b/src/Stripe.net/Entities/Treasury/DebitReversals/DebitReversal.cs
@@ -5,6 +5,9 @@ namespace Stripe.Treasury
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// You can reverse some <a
@@ -12,24 +15,36 @@ namespace Stripe.Treasury
     /// network and source flow. Reversing a ReceivedDebit leads to the creation of a new object
     /// known as a DebitReversal.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class DebitReversal : StripeEntity<DebitReversal>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Amount (in cents) transferred.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -37,6 +52,10 @@ public class DebitReversal : StripeEntity<DebitReversal>, IHasId, IHasMetadata,
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -45,12 +64,18 @@ public class DebitReversal : StripeEntity<DebitReversal>, IHasId, IHasMetadata,
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// The FinancialAccount to reverse funds from.
         /// </summary>
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public string FinancialAccount { get; set; }
 
         /// <summary>
@@ -59,12 +84,18 @@ public class DebitReversal : StripeEntity<DebitReversal>, IHasId, IHasMetadata,
         /// under Stripe's money transmission licenses.
         /// </summary>
         [JsonProperty("hosted_regulatory_receipt_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hosted_regulatory_receipt_url")]
+#endif
         public string HostedRegulatoryReceiptUrl { get; set; }
 
         /// <summary>
         /// Other flows linked to a DebitReversal.
         /// </summary>
         [JsonProperty("linked_flows")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("linked_flows")]
+#endif
         public DebitReversalLinkedFlows LinkedFlows { get; set; }
 
         /// <summary>
@@ -72,6 +103,9 @@ public class DebitReversal : StripeEntity<DebitReversal>, IHasId, IHasMetadata,
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -80,6 +114,9 @@ public class DebitReversal : StripeEntity<DebitReversal>, IHasId, IHasMetadata,
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -87,12 +124,18 @@ public class DebitReversal : StripeEntity<DebitReversal>, IHasId, IHasMetadata,
         /// One of: <c>ach</c>, or <c>card</c>.
         /// </summary>
         [JsonProperty("network")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network")]
+#endif
         public string Network { get; set; }
 
         /// <summary>
         /// The ReceivedDebit being reversed.
         /// </summary>
         [JsonProperty("received_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("received_debit")]
+#endif
         public string ReceivedDebit { get; set; }
 
         /// <summary>
@@ -100,9 +143,15 @@ public class DebitReversal : StripeEntity<DebitReversal>, IHasId, IHasMetadata,
         /// One of: <c>failed</c>, <c>processing</c>, or <c>succeeded</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         [JsonProperty("status_transitions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_transitions")]
+#endif
         public DebitReversalStatusTransitions StatusTransitions { get; set; }
 
         #region Expandable Transaction
@@ -112,6 +161,9 @@ public class DebitReversal : StripeEntity<DebitReversal>, IHasId, IHasMetadata,
         /// The Transaction associated with this object.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string TransactionId
         {
             get => this.InternalTransaction?.Id;
@@ -125,6 +177,9 @@ public string TransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Transaction Transaction
         {
             get => this.InternalTransaction?.ExpandedObject;
@@ -133,6 +188,10 @@ public Transaction Transaction
 
         [JsonProperty("transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<Transaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Transaction>))]
+#endif
         internal ExpandableField<Transaction> InternalTransaction { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Treasury/DebitReversals/DebitReversalLinkedFlows.cs b/src/Stripe.net/Entities/Treasury/DebitReversals/DebitReversalLinkedFlows.cs
index 3b2fab9afd..47487eaacc 100644
--- a/src/Stripe.net/Entities/Treasury/DebitReversals/DebitReversalLinkedFlows.cs
+++ b/src/Stripe.net/Entities/Treasury/DebitReversals/DebitReversalLinkedFlows.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DebitReversalLinkedFlows : StripeEntity<DebitReversalLinkedFlows>
     {
@@ -9,6 +12,9 @@ public class DebitReversalLinkedFlows : StripeEntity<DebitReversalLinkedFlows>
         /// Set if there is an Issuing dispute associated with the DebitReversal.
         /// </summary>
         [JsonProperty("issuing_dispute")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuing_dispute")]
+#endif
         public string IssuingDispute { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/DebitReversals/DebitReversalStatusTransitions.cs b/src/Stripe.net/Entities/Treasury/DebitReversals/DebitReversalStatusTransitions.cs
index c2c7bf99da..095a9ccb2e 100644
--- a/src/Stripe.net/Entities/Treasury/DebitReversals/DebitReversalStatusTransitions.cs
+++ b/src/Stripe.net/Entities/Treasury/DebitReversals/DebitReversalStatusTransitions.cs
@@ -4,6 +4,9 @@ namespace Stripe.Treasury
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DebitReversalStatusTransitions : StripeEntity<DebitReversalStatusTransitions>
     {
@@ -12,6 +15,10 @@ public class DebitReversalStatusTransitions : StripeEntity<DebitReversalStatusTr
         /// </summary>
         [JsonProperty("completed_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("completed_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? CompletedAt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeatures.cs b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeatures.cs
index 247cd96e9f..96a560d929 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeatures.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeatures.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Encodes whether a FinancialAccount has access to a particular Feature, with a
@@ -14,48 +17,72 @@ public class FinancialAccountFeatures : StripeEntity<FinancialAccountFeatures>,
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Toggle settings for enabling/disabling a feature.
         /// </summary>
         [JsonProperty("card_issuing")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_issuing")]
+#endif
         public FinancialAccountFeaturesCardIssuing CardIssuing { get; set; }
 
         /// <summary>
         /// Toggle settings for enabling/disabling a feature.
         /// </summary>
         [JsonProperty("deposit_insurance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deposit_insurance")]
+#endif
         public FinancialAccountFeaturesDepositInsurance DepositInsurance { get; set; }
 
         /// <summary>
         /// Settings related to Financial Addresses features on a Financial Account.
         /// </summary>
         [JsonProperty("financial_addresses")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_addresses")]
+#endif
         public FinancialAccountFeaturesFinancialAddresses FinancialAddresses { get; set; }
 
         /// <summary>
         /// InboundTransfers contains inbound transfers features for a FinancialAccount.
         /// </summary>
         [JsonProperty("inbound_transfers")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("inbound_transfers")]
+#endif
         public FinancialAccountFeaturesInboundTransfers InboundTransfers { get; set; }
 
         /// <summary>
         /// Toggle settings for enabling/disabling a feature.
         /// </summary>
         [JsonProperty("intra_stripe_flows")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("intra_stripe_flows")]
+#endif
         public FinancialAccountFeaturesIntraStripeFlows IntraStripeFlows { get; set; }
 
         /// <summary>
         /// Settings related to Outbound Payments features on a Financial Account.
         /// </summary>
         [JsonProperty("outbound_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("outbound_payments")]
+#endif
         public FinancialAccountFeaturesOutboundPayments OutboundPayments { get; set; }
 
         /// <summary>
         /// OutboundTransfers contains outbound transfers features for a FinancialAccount.
         /// </summary>
         [JsonProperty("outbound_transfers")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("outbound_transfers")]
+#endif
         public FinancialAccountFeaturesOutboundTransfers OutboundTransfers { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesCardIssuing.cs b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesCardIssuing.cs
index 83bf051201..5ad3b97e42 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesCardIssuing.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesCardIssuing.cs
@@ -3,6 +3,9 @@ namespace Stripe.Treasury
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesCardIssuing : StripeEntity<FinancialAccountFeaturesCardIssuing>
     {
@@ -10,6 +13,9 @@ public class FinancialAccountFeaturesCardIssuing : StripeEntity<FinancialAccount
         /// Whether the FinancialAccount should have the Feature.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool Requested { get; set; }
 
         /// <summary>
@@ -17,12 +23,18 @@ public class FinancialAccountFeaturesCardIssuing : StripeEntity<FinancialAccount
         /// One of: <c>active</c>, <c>pending</c>, or <c>restricted</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
         /// Additional details; includes at least one entry when the status is not <c>active</c>.
         /// </summary>
         [JsonProperty("status_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_details")]
+#endif
         public List<FinancialAccountFeaturesCardIssuingStatusDetail> StatusDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesCardIssuingStatusDetail.cs b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesCardIssuingStatusDetail.cs
index 5f5501093c..31d792cc23 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesCardIssuingStatusDetail.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesCardIssuingStatusDetail.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesCardIssuingStatusDetail : StripeEntity<FinancialAccountFeaturesCardIssuingStatusDetail>
     {
@@ -14,6 +17,9 @@ public class FinancialAccountFeaturesCardIssuingStatusDetail : StripeEntity<Fina
         /// <c>restricted_other</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class FinancialAccountFeaturesCardIssuingStatusDetail : StripeEntity<Fina
         /// One of: <c>contact_stripe</c>, <c>provide_information</c>, or <c>remove_restriction</c>.
         /// </summary>
         [JsonProperty("resolution")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("resolution")]
+#endif
         public string Resolution { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class FinancialAccountFeaturesCardIssuingStatusDetail : StripeEntity<Fina
         /// One of: <c>inbound_flows</c>, or <c>outbound_flows</c>.
         /// </summary>
         [JsonProperty("restriction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("restriction")]
+#endif
         public string Restriction { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesDepositInsurance.cs b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesDepositInsurance.cs
index c2d47b382a..838f5f29b7 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesDepositInsurance.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesDepositInsurance.cs
@@ -3,6 +3,9 @@ namespace Stripe.Treasury
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesDepositInsurance : StripeEntity<FinancialAccountFeaturesDepositInsurance>
     {
@@ -10,6 +13,9 @@ public class FinancialAccountFeaturesDepositInsurance : StripeEntity<FinancialAc
         /// Whether the FinancialAccount should have the Feature.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool Requested { get; set; }
 
         /// <summary>
@@ -17,12 +23,18 @@ public class FinancialAccountFeaturesDepositInsurance : StripeEntity<FinancialAc
         /// One of: <c>active</c>, <c>pending</c>, or <c>restricted</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
         /// Additional details; includes at least one entry when the status is not <c>active</c>.
         /// </summary>
         [JsonProperty("status_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_details")]
+#endif
         public List<FinancialAccountFeaturesDepositInsuranceStatusDetail> StatusDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesDepositInsuranceStatusDetail.cs b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesDepositInsuranceStatusDetail.cs
index 3e8b5f2b09..17a60e6399 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesDepositInsuranceStatusDetail.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesDepositInsuranceStatusDetail.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesDepositInsuranceStatusDetail : StripeEntity<FinancialAccountFeaturesDepositInsuranceStatusDetail>
     {
@@ -14,6 +17,9 @@ public class FinancialAccountFeaturesDepositInsuranceStatusDetail : StripeEntity
         /// <c>restricted_other</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class FinancialAccountFeaturesDepositInsuranceStatusDetail : StripeEntity
         /// One of: <c>contact_stripe</c>, <c>provide_information</c>, or <c>remove_restriction</c>.
         /// </summary>
         [JsonProperty("resolution")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("resolution")]
+#endif
         public string Resolution { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class FinancialAccountFeaturesDepositInsuranceStatusDetail : StripeEntity
         /// One of: <c>inbound_flows</c>, or <c>outbound_flows</c>.
         /// </summary>
         [JsonProperty("restriction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("restriction")]
+#endif
         public string Restriction { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesFinancialAddresses.cs b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesFinancialAddresses.cs
index cf1b6f0e33..d4b6f91f1c 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesFinancialAddresses.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesFinancialAddresses.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesFinancialAddresses : StripeEntity<FinancialAccountFeaturesFinancialAddresses>
     {
@@ -9,6 +12,9 @@ public class FinancialAccountFeaturesFinancialAddresses : StripeEntity<Financial
         /// Toggle settings for enabling/disabling the ABA address feature.
         /// </summary>
         [JsonProperty("aba")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("aba")]
+#endif
         public FinancialAccountFeaturesFinancialAddressesAba Aba { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesFinancialAddressesAba.cs b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesFinancialAddressesAba.cs
index 2cc350d1de..8763deb5b2 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesFinancialAddressesAba.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesFinancialAddressesAba.cs
@@ -3,6 +3,9 @@ namespace Stripe.Treasury
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesFinancialAddressesAba : StripeEntity<FinancialAccountFeaturesFinancialAddressesAba>
     {
@@ -10,6 +13,9 @@ public class FinancialAccountFeaturesFinancialAddressesAba : StripeEntity<Financ
         /// Whether the FinancialAccount should have the Feature.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool Requested { get; set; }
 
         /// <summary>
@@ -17,12 +23,18 @@ public class FinancialAccountFeaturesFinancialAddressesAba : StripeEntity<Financ
         /// One of: <c>active</c>, <c>pending</c>, or <c>restricted</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
         /// Additional details; includes at least one entry when the status is not <c>active</c>.
         /// </summary>
         [JsonProperty("status_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_details")]
+#endif
         public List<FinancialAccountFeaturesFinancialAddressesAbaStatusDetail> StatusDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesFinancialAddressesAbaStatusDetail.cs b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesFinancialAddressesAbaStatusDetail.cs
index f8591e7219..b3bb3b2c72 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesFinancialAddressesAbaStatusDetail.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesFinancialAddressesAbaStatusDetail.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesFinancialAddressesAbaStatusDetail : StripeEntity<FinancialAccountFeaturesFinancialAddressesAbaStatusDetail>
     {
@@ -14,6 +17,9 @@ public class FinancialAccountFeaturesFinancialAddressesAbaStatusDetail : StripeE
         /// <c>restricted_other</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class FinancialAccountFeaturesFinancialAddressesAbaStatusDetail : StripeE
         /// One of: <c>contact_stripe</c>, <c>provide_information</c>, or <c>remove_restriction</c>.
         /// </summary>
         [JsonProperty("resolution")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("resolution")]
+#endif
         public string Resolution { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class FinancialAccountFeaturesFinancialAddressesAbaStatusDetail : StripeE
         /// One of: <c>inbound_flows</c>, or <c>outbound_flows</c>.
         /// </summary>
         [JsonProperty("restriction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("restriction")]
+#endif
         public string Restriction { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesInboundTransfers.cs b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesInboundTransfers.cs
index 3a0ba76404..0468c959b8 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesInboundTransfers.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesInboundTransfers.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesInboundTransfers : StripeEntity<FinancialAccountFeaturesInboundTransfers>
     {
@@ -9,6 +12,9 @@ public class FinancialAccountFeaturesInboundTransfers : StripeEntity<FinancialAc
         /// Toggle settings for enabling/disabling an inbound ACH specific feature.
         /// </summary>
         [JsonProperty("ach")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ach")]
+#endif
         public FinancialAccountFeaturesInboundTransfersAch Ach { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesInboundTransfersAch.cs b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesInboundTransfersAch.cs
index 89ef7e751e..780d642adc 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesInboundTransfersAch.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesInboundTransfersAch.cs
@@ -3,6 +3,9 @@ namespace Stripe.Treasury
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesInboundTransfersAch : StripeEntity<FinancialAccountFeaturesInboundTransfersAch>
     {
@@ -10,6 +13,9 @@ public class FinancialAccountFeaturesInboundTransfersAch : StripeEntity<Financia
         /// Whether the FinancialAccount should have the Feature.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool Requested { get; set; }
 
         /// <summary>
@@ -17,12 +23,18 @@ public class FinancialAccountFeaturesInboundTransfersAch : StripeEntity<Financia
         /// One of: <c>active</c>, <c>pending</c>, or <c>restricted</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
         /// Additional details; includes at least one entry when the status is not <c>active</c>.
         /// </summary>
         [JsonProperty("status_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_details")]
+#endif
         public List<FinancialAccountFeaturesInboundTransfersAchStatusDetail> StatusDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesInboundTransfersAchStatusDetail.cs b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesInboundTransfersAchStatusDetail.cs
index 4338055b36..382f7d580b 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesInboundTransfersAchStatusDetail.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesInboundTransfersAchStatusDetail.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesInboundTransfersAchStatusDetail : StripeEntity<FinancialAccountFeaturesInboundTransfersAchStatusDetail>
     {
@@ -14,6 +17,9 @@ public class FinancialAccountFeaturesInboundTransfersAchStatusDetail : StripeEnt
         /// <c>restricted_other</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class FinancialAccountFeaturesInboundTransfersAchStatusDetail : StripeEnt
         /// One of: <c>contact_stripe</c>, <c>provide_information</c>, or <c>remove_restriction</c>.
         /// </summary>
         [JsonProperty("resolution")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("resolution")]
+#endif
         public string Resolution { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class FinancialAccountFeaturesInboundTransfersAchStatusDetail : StripeEnt
         /// One of: <c>inbound_flows</c>, or <c>outbound_flows</c>.
         /// </summary>
         [JsonProperty("restriction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("restriction")]
+#endif
         public string Restriction { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesIntraStripeFlows.cs b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesIntraStripeFlows.cs
index 41127304c6..123cd27333 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesIntraStripeFlows.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesIntraStripeFlows.cs
@@ -3,6 +3,9 @@ namespace Stripe.Treasury
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesIntraStripeFlows : StripeEntity<FinancialAccountFeaturesIntraStripeFlows>
     {
@@ -10,6 +13,9 @@ public class FinancialAccountFeaturesIntraStripeFlows : StripeEntity<FinancialAc
         /// Whether the FinancialAccount should have the Feature.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool Requested { get; set; }
 
         /// <summary>
@@ -17,12 +23,18 @@ public class FinancialAccountFeaturesIntraStripeFlows : StripeEntity<FinancialAc
         /// One of: <c>active</c>, <c>pending</c>, or <c>restricted</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
         /// Additional details; includes at least one entry when the status is not <c>active</c>.
         /// </summary>
         [JsonProperty("status_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_details")]
+#endif
         public List<FinancialAccountFeaturesIntraStripeFlowsStatusDetail> StatusDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesIntraStripeFlowsStatusDetail.cs b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesIntraStripeFlowsStatusDetail.cs
index e854763180..e5e953b510 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesIntraStripeFlowsStatusDetail.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesIntraStripeFlowsStatusDetail.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesIntraStripeFlowsStatusDetail : StripeEntity<FinancialAccountFeaturesIntraStripeFlowsStatusDetail>
     {
@@ -14,6 +17,9 @@ public class FinancialAccountFeaturesIntraStripeFlowsStatusDetail : StripeEntity
         /// <c>restricted_other</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class FinancialAccountFeaturesIntraStripeFlowsStatusDetail : StripeEntity
         /// One of: <c>contact_stripe</c>, <c>provide_information</c>, or <c>remove_restriction</c>.
         /// </summary>
         [JsonProperty("resolution")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("resolution")]
+#endif
         public string Resolution { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class FinancialAccountFeaturesIntraStripeFlowsStatusDetail : StripeEntity
         /// One of: <c>inbound_flows</c>, or <c>outbound_flows</c>.
         /// </summary>
         [JsonProperty("restriction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("restriction")]
+#endif
         public string Restriction { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundPayments.cs b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundPayments.cs
index 09edcff7e8..b2620c706c 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundPayments.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundPayments.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesOutboundPayments : StripeEntity<FinancialAccountFeaturesOutboundPayments>
     {
@@ -9,12 +12,18 @@ public class FinancialAccountFeaturesOutboundPayments : StripeEntity<FinancialAc
         /// Toggle settings for enabling/disabling an outbound ACH specific feature.
         /// </summary>
         [JsonProperty("ach")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ach")]
+#endif
         public FinancialAccountFeaturesOutboundPaymentsAch Ach { get; set; }
 
         /// <summary>
         /// Toggle settings for enabling/disabling a feature.
         /// </summary>
         [JsonProperty("us_domestic_wire")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_domestic_wire")]
+#endif
         public FinancialAccountFeaturesOutboundPaymentsUsDomesticWire UsDomesticWire { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundPaymentsAch.cs b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundPaymentsAch.cs
index 7546d24698..4f35a7f798 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundPaymentsAch.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundPaymentsAch.cs
@@ -3,6 +3,9 @@ namespace Stripe.Treasury
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesOutboundPaymentsAch : StripeEntity<FinancialAccountFeaturesOutboundPaymentsAch>
     {
@@ -10,6 +13,9 @@ public class FinancialAccountFeaturesOutboundPaymentsAch : StripeEntity<Financia
         /// Whether the FinancialAccount should have the Feature.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool Requested { get; set; }
 
         /// <summary>
@@ -17,12 +23,18 @@ public class FinancialAccountFeaturesOutboundPaymentsAch : StripeEntity<Financia
         /// One of: <c>active</c>, <c>pending</c>, or <c>restricted</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
         /// Additional details; includes at least one entry when the status is not <c>active</c>.
         /// </summary>
         [JsonProperty("status_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_details")]
+#endif
         public List<FinancialAccountFeaturesOutboundPaymentsAchStatusDetail> StatusDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundPaymentsAchStatusDetail.cs b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundPaymentsAchStatusDetail.cs
index 7accdce114..8a4cca5973 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundPaymentsAchStatusDetail.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundPaymentsAchStatusDetail.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesOutboundPaymentsAchStatusDetail : StripeEntity<FinancialAccountFeaturesOutboundPaymentsAchStatusDetail>
     {
@@ -14,6 +17,9 @@ public class FinancialAccountFeaturesOutboundPaymentsAchStatusDetail : StripeEnt
         /// <c>restricted_other</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class FinancialAccountFeaturesOutboundPaymentsAchStatusDetail : StripeEnt
         /// One of: <c>contact_stripe</c>, <c>provide_information</c>, or <c>remove_restriction</c>.
         /// </summary>
         [JsonProperty("resolution")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("resolution")]
+#endif
         public string Resolution { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class FinancialAccountFeaturesOutboundPaymentsAchStatusDetail : StripeEnt
         /// One of: <c>inbound_flows</c>, or <c>outbound_flows</c>.
         /// </summary>
         [JsonProperty("restriction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("restriction")]
+#endif
         public string Restriction { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundPaymentsUsDomesticWire.cs b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundPaymentsUsDomesticWire.cs
index 28e5b50774..32418f5600 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundPaymentsUsDomesticWire.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundPaymentsUsDomesticWire.cs
@@ -3,6 +3,9 @@ namespace Stripe.Treasury
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesOutboundPaymentsUsDomesticWire : StripeEntity<FinancialAccountFeaturesOutboundPaymentsUsDomesticWire>
     {
@@ -10,6 +13,9 @@ public class FinancialAccountFeaturesOutboundPaymentsUsDomesticWire : StripeEnti
         /// Whether the FinancialAccount should have the Feature.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool Requested { get; set; }
 
         /// <summary>
@@ -17,12 +23,18 @@ public class FinancialAccountFeaturesOutboundPaymentsUsDomesticWire : StripeEnti
         /// One of: <c>active</c>, <c>pending</c>, or <c>restricted</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
         /// Additional details; includes at least one entry when the status is not <c>active</c>.
         /// </summary>
         [JsonProperty("status_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_details")]
+#endif
         public List<FinancialAccountFeaturesOutboundPaymentsUsDomesticWireStatusDetail> StatusDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundPaymentsUsDomesticWireStatusDetail.cs b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundPaymentsUsDomesticWireStatusDetail.cs
index 17f0b3d999..20da0ae0ed 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundPaymentsUsDomesticWireStatusDetail.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundPaymentsUsDomesticWireStatusDetail.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesOutboundPaymentsUsDomesticWireStatusDetail : StripeEntity<FinancialAccountFeaturesOutboundPaymentsUsDomesticWireStatusDetail>
     {
@@ -14,6 +17,9 @@ public class FinancialAccountFeaturesOutboundPaymentsUsDomesticWireStatusDetail
         /// <c>restricted_other</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class FinancialAccountFeaturesOutboundPaymentsUsDomesticWireStatusDetail
         /// One of: <c>contact_stripe</c>, <c>provide_information</c>, or <c>remove_restriction</c>.
         /// </summary>
         [JsonProperty("resolution")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("resolution")]
+#endif
         public string Resolution { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class FinancialAccountFeaturesOutboundPaymentsUsDomesticWireStatusDetail
         /// One of: <c>inbound_flows</c>, or <c>outbound_flows</c>.
         /// </summary>
         [JsonProperty("restriction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("restriction")]
+#endif
         public string Restriction { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundTransfers.cs b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundTransfers.cs
index 290d3ffdfa..4f3d7fdf59 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundTransfers.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundTransfers.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesOutboundTransfers : StripeEntity<FinancialAccountFeaturesOutboundTransfers>
     {
@@ -9,12 +12,18 @@ public class FinancialAccountFeaturesOutboundTransfers : StripeEntity<FinancialA
         /// Toggle settings for enabling/disabling an outbound ACH specific feature.
         /// </summary>
         [JsonProperty("ach")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ach")]
+#endif
         public FinancialAccountFeaturesOutboundTransfersAch Ach { get; set; }
 
         /// <summary>
         /// Toggle settings for enabling/disabling a feature.
         /// </summary>
         [JsonProperty("us_domestic_wire")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_domestic_wire")]
+#endif
         public FinancialAccountFeaturesOutboundTransfersUsDomesticWire UsDomesticWire { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundTransfersAch.cs b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundTransfersAch.cs
index fbe6a93ccf..7903694fc6 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundTransfersAch.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundTransfersAch.cs
@@ -3,6 +3,9 @@ namespace Stripe.Treasury
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesOutboundTransfersAch : StripeEntity<FinancialAccountFeaturesOutboundTransfersAch>
     {
@@ -10,6 +13,9 @@ public class FinancialAccountFeaturesOutboundTransfersAch : StripeEntity<Financi
         /// Whether the FinancialAccount should have the Feature.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool Requested { get; set; }
 
         /// <summary>
@@ -17,12 +23,18 @@ public class FinancialAccountFeaturesOutboundTransfersAch : StripeEntity<Financi
         /// One of: <c>active</c>, <c>pending</c>, or <c>restricted</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
         /// Additional details; includes at least one entry when the status is not <c>active</c>.
         /// </summary>
         [JsonProperty("status_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_details")]
+#endif
         public List<FinancialAccountFeaturesOutboundTransfersAchStatusDetail> StatusDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundTransfersAchStatusDetail.cs b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundTransfersAchStatusDetail.cs
index 5e37b3e141..41df368e0d 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundTransfersAchStatusDetail.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundTransfersAchStatusDetail.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesOutboundTransfersAchStatusDetail : StripeEntity<FinancialAccountFeaturesOutboundTransfersAchStatusDetail>
     {
@@ -14,6 +17,9 @@ public class FinancialAccountFeaturesOutboundTransfersAchStatusDetail : StripeEn
         /// <c>restricted_other</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class FinancialAccountFeaturesOutboundTransfersAchStatusDetail : StripeEn
         /// One of: <c>contact_stripe</c>, <c>provide_information</c>, or <c>remove_restriction</c>.
         /// </summary>
         [JsonProperty("resolution")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("resolution")]
+#endif
         public string Resolution { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class FinancialAccountFeaturesOutboundTransfersAchStatusDetail : StripeEn
         /// One of: <c>inbound_flows</c>, or <c>outbound_flows</c>.
         /// </summary>
         [JsonProperty("restriction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("restriction")]
+#endif
         public string Restriction { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundTransfersUsDomesticWire.cs b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundTransfersUsDomesticWire.cs
index 0034ddcb84..d679d36f53 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundTransfersUsDomesticWire.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundTransfersUsDomesticWire.cs
@@ -3,6 +3,9 @@ namespace Stripe.Treasury
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesOutboundTransfersUsDomesticWire : StripeEntity<FinancialAccountFeaturesOutboundTransfersUsDomesticWire>
     {
@@ -10,6 +13,9 @@ public class FinancialAccountFeaturesOutboundTransfersUsDomesticWire : StripeEnt
         /// Whether the FinancialAccount should have the Feature.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool Requested { get; set; }
 
         /// <summary>
@@ -17,12 +23,18 @@ public class FinancialAccountFeaturesOutboundTransfersUsDomesticWire : StripeEnt
         /// One of: <c>active</c>, <c>pending</c>, or <c>restricted</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
         /// Additional details; includes at least one entry when the status is not <c>active</c>.
         /// </summary>
         [JsonProperty("status_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_details")]
+#endif
         public List<FinancialAccountFeaturesOutboundTransfersUsDomesticWireStatusDetail> StatusDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundTransfersUsDomesticWireStatusDetail.cs b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundTransfersUsDomesticWireStatusDetail.cs
index c98aa3a6af..d425108ef9 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundTransfersUsDomesticWireStatusDetail.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesOutboundTransfersUsDomesticWireStatusDetail.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesOutboundTransfersUsDomesticWireStatusDetail : StripeEntity<FinancialAccountFeaturesOutboundTransfersUsDomesticWireStatusDetail>
     {
@@ -14,6 +17,9 @@ public class FinancialAccountFeaturesOutboundTransfersUsDomesticWireStatusDetail
         /// <c>restricted_other</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class FinancialAccountFeaturesOutboundTransfersUsDomesticWireStatusDetail
         /// One of: <c>contact_stripe</c>, <c>provide_information</c>, or <c>remove_restriction</c>.
         /// </summary>
         [JsonProperty("resolution")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("resolution")]
+#endif
         public string Resolution { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class FinancialAccountFeaturesOutboundTransfersUsDomesticWireStatusDetail
         /// One of: <c>inbound_flows</c>, or <c>outbound_flows</c>.
         /// </summary>
         [JsonProperty("restriction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("restriction")]
+#endif
         public string Restriction { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccounts/FinancialAccount.cs b/src/Stripe.net/Entities/Treasury/FinancialAccounts/FinancialAccount.cs
index 3e45853f48..d41288a4d6 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccounts/FinancialAccount.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccounts/FinancialAccount.cs
@@ -5,6 +5,9 @@ namespace Stripe.Treasury
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Stripe Treasury provides users with a container for money called a FinancialAccount that
@@ -17,12 +20,18 @@ public class FinancialAccount : StripeEntity<FinancialAccount>, IHasId, IHasMeta
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -34,12 +43,18 @@ public class FinancialAccount : StripeEntity<FinancialAccount>, IHasId, IHasMeta
         /// <c>outbound_transfers.us_domestic_wire</c>, or <c>remote_deposit_capture</c>.
         /// </summary>
         [JsonProperty("active_features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active_features")]
+#endif
         public List<string> ActiveFeatures { get; set; }
 
         /// <summary>
         /// Balance information for the FinancialAccount.
         /// </summary>
         [JsonProperty("balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("balance")]
+#endif
         public FinancialAccountBalance Balance { get; set; }
 
         /// <summary>
@@ -47,6 +62,9 @@ public class FinancialAccount : StripeEntity<FinancialAccount>, IHasId, IHasMeta
         /// 3166-1 alpha-2</a>).
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -54,6 +72,10 @@ public class FinancialAccount : StripeEntity<FinancialAccount>, IHasId, IHasMeta
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -62,15 +84,24 @@ public class FinancialAccount : StripeEntity<FinancialAccount>, IHasId, IHasMeta
         /// control Features via the requested field.
         /// </summary>
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public FinancialAccountFeatures Features { get; set; }
 
         /// <summary>
         /// The set of credentials that resolve to a FinancialAccount.
         /// </summary>
         [JsonProperty("financial_addresses")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_addresses")]
+#endif
         public List<FinancialAccountFinancialAddress> FinancialAddresses { get; set; }
 
         [JsonProperty("is_default")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("is_default")]
+#endif
         public bool IsDefault { get; set; }
 
         /// <summary>
@@ -78,6 +109,9 @@ public class FinancialAccount : StripeEntity<FinancialAccount>, IHasId, IHasMeta
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -86,12 +120,18 @@ public class FinancialAccount : StripeEntity<FinancialAccount>, IHasId, IHasMeta
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The nickname for the FinancialAccount.
         /// </summary>
         [JsonProperty("nickname")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("nickname")]
+#endif
         public string Nickname { get; set; }
 
         /// <summary>
@@ -103,12 +143,18 @@ public class FinancialAccount : StripeEntity<FinancialAccount>, IHasId, IHasMeta
         /// <c>outbound_transfers.us_domestic_wire</c>, or <c>remote_deposit_capture</c>.
         /// </summary>
         [JsonProperty("pending_features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pending_features")]
+#endif
         public List<string> PendingFeatures { get; set; }
 
         /// <summary>
         /// The set of functionalities that the platform can restrict on the FinancialAccount.
         /// </summary>
         [JsonProperty("platform_restrictions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("platform_restrictions")]
+#endif
         public FinancialAccountPlatformRestrictions PlatformRestrictions { get; set; }
 
         /// <summary>
@@ -120,6 +166,9 @@ public class FinancialAccount : StripeEntity<FinancialAccount>, IHasId, IHasMeta
         /// <c>outbound_transfers.us_domestic_wire</c>, or <c>remote_deposit_capture</c>.
         /// </summary>
         [JsonProperty("restricted_features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("restricted_features")]
+#endif
         public List<string> RestrictedFeatures { get; set; }
 
         /// <summary>
@@ -127,9 +176,15 @@ public class FinancialAccount : StripeEntity<FinancialAccount>, IHasId, IHasMeta
         /// One of: <c>closed</c>, or <c>open</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         [JsonProperty("status_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_details")]
+#endif
         public FinancialAccountStatusDetails StatusDetails { get; set; }
 
         /// <summary>
@@ -138,6 +193,9 @@ public class FinancialAccount : StripeEntity<FinancialAccount>, IHasId, IHasMeta
         /// lowercase.
         /// </summary>
         [JsonProperty("supported_currencies")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("supported_currencies")]
+#endif
         public List<string> SupportedCurrencies { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccounts/FinancialAccountBalance.cs b/src/Stripe.net/Entities/Treasury/FinancialAccounts/FinancialAccountBalance.cs
index 085e4577ca..4dbb718ad7 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccounts/FinancialAccountBalance.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccounts/FinancialAccountBalance.cs
@@ -3,6 +3,9 @@ namespace Stripe.Treasury
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountBalance : StripeEntity<FinancialAccountBalance>
     {
@@ -10,12 +13,18 @@ public class FinancialAccountBalance : StripeEntity<FinancialAccountBalance>
         /// Funds the user can spend right now.
         /// </summary>
         [JsonProperty("cash")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cash")]
+#endif
         public Dictionary<string, long> Cash { get; set; }
 
         /// <summary>
         /// Funds not spendable yet, but will become available at a later time.
         /// </summary>
         [JsonProperty("inbound_pending")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("inbound_pending")]
+#endif
         public Dictionary<string, long> InboundPending { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class FinancialAccountBalance : StripeEntity<FinancialAccountBalance>
         /// flows.
         /// </summary>
         [JsonProperty("outbound_pending")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("outbound_pending")]
+#endif
         public Dictionary<string, long> OutboundPending { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccounts/FinancialAccountFinancialAddress.cs b/src/Stripe.net/Entities/Treasury/FinancialAccounts/FinancialAccountFinancialAddress.cs
index 318d6163fa..c3bc0566ec 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccounts/FinancialAccountFinancialAddress.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccounts/FinancialAccountFinancialAddress.cs
@@ -3,6 +3,9 @@ namespace Stripe.Treasury
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFinancialAddress : StripeEntity<FinancialAccountFinancialAddress>
     {
@@ -10,6 +13,9 @@ public class FinancialAccountFinancialAddress : StripeEntity<FinancialAccountFin
         /// ABA Records contain U.S. bank account details per the ABA format.
         /// </summary>
         [JsonProperty("aba")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("aba")]
+#endif
         public FinancialAccountFinancialAddressAba Aba { get; set; }
 
         /// <summary>
@@ -17,12 +23,18 @@ public class FinancialAccountFinancialAddress : StripeEntity<FinancialAccountFin
         /// One of: <c>ach</c>, or <c>us_domestic_wire</c>.
         /// </summary>
         [JsonProperty("supported_networks")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("supported_networks")]
+#endif
         public List<string> SupportedNetworks { get; set; }
 
         /// <summary>
         /// The type of financial address.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccounts/FinancialAccountFinancialAddressAba.cs b/src/Stripe.net/Entities/Treasury/FinancialAccounts/FinancialAccountFinancialAddressAba.cs
index 64bbf9e7bb..759cda1c76 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccounts/FinancialAccountFinancialAddressAba.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccounts/FinancialAccountFinancialAddressAba.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFinancialAddressAba : StripeEntity<FinancialAccountFinancialAddressAba>
     {
@@ -9,30 +12,45 @@ public class FinancialAccountFinancialAddressAba : StripeEntity<FinancialAccount
         /// The name of the person or business that owns the bank account.
         /// </summary>
         [JsonProperty("account_holder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_name")]
+#endif
         public string AccountHolderName { get; set; }
 
         /// <summary>
         /// The account number.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
         /// The last four characters of the account number.
         /// </summary>
         [JsonProperty("account_number_last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number_last4")]
+#endif
         public string AccountNumberLast4 { get; set; }
 
         /// <summary>
         /// Name of the bank.
         /// </summary>
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         /// <summary>
         /// Routing number for the account.
         /// </summary>
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccounts/FinancialAccountPlatformRestrictions.cs b/src/Stripe.net/Entities/Treasury/FinancialAccounts/FinancialAccountPlatformRestrictions.cs
index f0cfc6983b..c02bc0e05b 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccounts/FinancialAccountPlatformRestrictions.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccounts/FinancialAccountPlatformRestrictions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountPlatformRestrictions : StripeEntity<FinancialAccountPlatformRestrictions>
     {
@@ -10,6 +13,9 @@ public class FinancialAccountPlatformRestrictions : StripeEntity<FinancialAccoun
         /// One of: <c>restricted</c>, or <c>unrestricted</c>.
         /// </summary>
         [JsonProperty("inbound_flows")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("inbound_flows")]
+#endif
         public string InboundFlows { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class FinancialAccountPlatformRestrictions : StripeEntity<FinancialAccoun
         /// One of: <c>restricted</c>, or <c>unrestricted</c>.
         /// </summary>
         [JsonProperty("outbound_flows")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("outbound_flows")]
+#endif
         public string OutboundFlows { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccounts/FinancialAccountStatusDetails.cs b/src/Stripe.net/Entities/Treasury/FinancialAccounts/FinancialAccountStatusDetails.cs
index cddf186675..2d99ab2088 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccounts/FinancialAccountStatusDetails.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccounts/FinancialAccountStatusDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountStatusDetails : StripeEntity<FinancialAccountStatusDetails>
     {
@@ -9,6 +12,9 @@ public class FinancialAccountStatusDetails : StripeEntity<FinancialAccountStatus
         /// Details related to the closure of this FinancialAccount.
         /// </summary>
         [JsonProperty("closed")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("closed")]
+#endif
         public FinancialAccountStatusDetailsClosed Closed { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/FinancialAccounts/FinancialAccountStatusDetailsClosed.cs b/src/Stripe.net/Entities/Treasury/FinancialAccounts/FinancialAccountStatusDetailsClosed.cs
index 846257b357..8d13ecf7b7 100644
--- a/src/Stripe.net/Entities/Treasury/FinancialAccounts/FinancialAccountStatusDetailsClosed.cs
+++ b/src/Stripe.net/Entities/Treasury/FinancialAccounts/FinancialAccountStatusDetailsClosed.cs
@@ -3,6 +3,9 @@ namespace Stripe.Treasury
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountStatusDetailsClosed : StripeEntity<FinancialAccountStatusDetailsClosed>
     {
@@ -11,6 +14,9 @@ public class FinancialAccountStatusDetailsClosed : StripeEntity<FinancialAccount
         /// One of: <c>account_rejected</c>, <c>closed_by_platform</c>, or <c>other</c>.
         /// </summary>
         [JsonProperty("reasons")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reasons")]
+#endif
         public List<string> Reasons { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/InboundTransfers/InboundTransfer.cs b/src/Stripe.net/Entities/Treasury/InboundTransfers/InboundTransfer.cs
index 83fcab2fae..17935374ae 100644
--- a/src/Stripe.net/Entities/Treasury/InboundTransfers/InboundTransfer.cs
+++ b/src/Stripe.net/Entities/Treasury/InboundTransfers/InboundTransfer.cs
@@ -5,6 +5,9 @@ namespace Stripe.Treasury
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Use <a
@@ -17,30 +20,45 @@ namespace Stripe.Treasury
     /// href="https://docs.stripe.com/docs/treasury/moving-money/financial-accounts/into/inbound-transfers">Moving
     /// money with Treasury using InboundTransfer objects</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class InboundTransfer : StripeEntity<InboundTransfer>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Amount (in cents) transferred.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
         /// Returns <c>true</c> if the InboundTransfer is able to be canceled.
         /// </summary>
         [JsonProperty("cancelable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancelable")]
+#endif
         public bool Cancelable { get; set; }
 
         /// <summary>
@@ -48,6 +66,10 @@ public class InboundTransfer : StripeEntity<InboundTransfer>, IHasId, IHasMetada
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -56,24 +78,36 @@ public class InboundTransfer : StripeEntity<InboundTransfer>, IHasId, IHasMetada
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// Details about this InboundTransfer's failure. Only set when status is <c>failed</c>.
         /// </summary>
         [JsonProperty("failure_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("failure_details")]
+#endif
         public InboundTransferFailureDetails FailureDetails { get; set; }
 
         /// <summary>
         /// The FinancialAccount that received the funds.
         /// </summary>
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public string FinancialAccount { get; set; }
 
         /// <summary>
@@ -82,9 +116,15 @@ public class InboundTransfer : StripeEntity<InboundTransfer>, IHasId, IHasMetada
         /// under Stripe's money transmission licenses.
         /// </summary>
         [JsonProperty("hosted_regulatory_receipt_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hosted_regulatory_receipt_url")]
+#endif
         public string HostedRegulatoryReceiptUrl { get; set; }
 
         [JsonProperty("linked_flows")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("linked_flows")]
+#endif
         public InboundTransferLinkedFlows LinkedFlows { get; set; }
 
         /// <summary>
@@ -92,6 +132,9 @@ public class InboundTransfer : StripeEntity<InboundTransfer>, IHasId, IHasMetada
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -100,18 +143,27 @@ public class InboundTransfer : StripeEntity<InboundTransfer>, IHasId, IHasMetada
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The origin payment method to be debited for an InboundTransfer.
         /// </summary>
         [JsonProperty("origin_payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("origin_payment_method")]
+#endif
         public string OriginPaymentMethod { get; set; }
 
         /// <summary>
         /// Details about the PaymentMethod for an InboundTransfer.
         /// </summary>
         [JsonProperty("origin_payment_method_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("origin_payment_method_details")]
+#endif
         public InboundTransferOriginPaymentMethodDetails OriginPaymentMethodDetails { get; set; }
 
         /// <summary>
@@ -119,6 +171,9 @@ public class InboundTransfer : StripeEntity<InboundTransfer>, IHasId, IHasMetada
         /// InboundTransfer went to the <c>succeeded</c> state.
         /// </summary>
         [JsonProperty("returned")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("returned")]
+#endif
         public bool? Returned { get; set; }
 
         /// <summary>
@@ -126,6 +181,9 @@ public class InboundTransfer : StripeEntity<InboundTransfer>, IHasId, IHasMetada
         /// networks support <c>statement_descriptor</c>.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
 
         /// <summary>
@@ -137,9 +195,15 @@ public class InboundTransfer : StripeEntity<InboundTransfer>, IHasId, IHasMetada
         /// One of: <c>canceled</c>, <c>failed</c>, <c>processing</c>, or <c>succeeded</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         [JsonProperty("status_transitions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_transitions")]
+#endif
         public InboundTransferStatusTransitions StatusTransitions { get; set; }
 
         #region Expandable Transaction
@@ -149,6 +213,9 @@ public class InboundTransfer : StripeEntity<InboundTransfer>, IHasId, IHasMetada
         /// The Transaction associated with this object.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string TransactionId
         {
             get => this.InternalTransaction?.Id;
@@ -162,6 +229,9 @@ public string TransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Transaction Transaction
         {
             get => this.InternalTransaction?.ExpandedObject;
@@ -170,6 +240,10 @@ public Transaction Transaction
 
         [JsonProperty("transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<Transaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Transaction>))]
+#endif
         internal ExpandableField<Transaction> InternalTransaction { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Treasury/InboundTransfers/InboundTransferFailureDetails.cs b/src/Stripe.net/Entities/Treasury/InboundTransfers/InboundTransferFailureDetails.cs
index 84db26597e..6842e2801c 100644
--- a/src/Stripe.net/Entities/Treasury/InboundTransfers/InboundTransferFailureDetails.cs
+++ b/src/Stripe.net/Entities/Treasury/InboundTransfers/InboundTransferFailureDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InboundTransferFailureDetails : StripeEntity<InboundTransferFailureDetails>
     {
@@ -15,6 +18,9 @@ public class InboundTransferFailureDetails : StripeEntity<InboundTransferFailure
         /// <c>other</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/InboundTransfers/InboundTransferLinkedFlows.cs b/src/Stripe.net/Entities/Treasury/InboundTransfers/InboundTransferLinkedFlows.cs
index 06a40a0802..1edc91a98e 100644
--- a/src/Stripe.net/Entities/Treasury/InboundTransfers/InboundTransferLinkedFlows.cs
+++ b/src/Stripe.net/Entities/Treasury/InboundTransfers/InboundTransferLinkedFlows.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InboundTransferLinkedFlows : StripeEntity<InboundTransferLinkedFlows>
     {
@@ -10,6 +13,9 @@ public class InboundTransferLinkedFlows : StripeEntity<InboundTransferLinkedFlow
         /// this field contains a reference to the ReceivedDebit return.
         /// </summary>
         [JsonProperty("received_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("received_debit")]
+#endif
         public string ReceivedDebit { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/InboundTransfers/InboundTransferOriginPaymentMethodDetails.cs b/src/Stripe.net/Entities/Treasury/InboundTransfers/InboundTransferOriginPaymentMethodDetails.cs
index 42277db259..98c1e9cabe 100644
--- a/src/Stripe.net/Entities/Treasury/InboundTransfers/InboundTransferOriginPaymentMethodDetails.cs
+++ b/src/Stripe.net/Entities/Treasury/InboundTransfers/InboundTransferOriginPaymentMethodDetails.cs
@@ -2,19 +2,31 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InboundTransferOriginPaymentMethodDetails : StripeEntity<InboundTransferOriginPaymentMethodDetails>
     {
         [JsonProperty("billing_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_details")]
+#endif
         public InboundTransferOriginPaymentMethodDetailsBillingDetails BillingDetails { get; set; }
 
         /// <summary>
         /// The type of the payment method used in the InboundTransfer.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public InboundTransferOriginPaymentMethodDetailsUsBankAccount UsBankAccount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/InboundTransfers/InboundTransferOriginPaymentMethodDetailsBillingDetails.cs b/src/Stripe.net/Entities/Treasury/InboundTransfers/InboundTransferOriginPaymentMethodDetailsBillingDetails.cs
index 7d8eabcc86..b5fd1b23c1 100644
--- a/src/Stripe.net/Entities/Treasury/InboundTransfers/InboundTransferOriginPaymentMethodDetailsBillingDetails.cs
+++ b/src/Stripe.net/Entities/Treasury/InboundTransfers/InboundTransferOriginPaymentMethodDetailsBillingDetails.cs
@@ -2,22 +2,34 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InboundTransferOriginPaymentMethodDetailsBillingDetails : StripeEntity<InboundTransferOriginPaymentMethodDetailsBillingDetails>
     {
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public Address Address { get; set; }
 
         /// <summary>
         /// Email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// Full name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/InboundTransfers/InboundTransferOriginPaymentMethodDetailsUsBankAccount.cs b/src/Stripe.net/Entities/Treasury/InboundTransfers/InboundTransferOriginPaymentMethodDetailsUsBankAccount.cs
index 3632eaf378..23da87aa45 100644
--- a/src/Stripe.net/Entities/Treasury/InboundTransfers/InboundTransferOriginPaymentMethodDetailsUsBankAccount.cs
+++ b/src/Stripe.net/Entities/Treasury/InboundTransfers/InboundTransferOriginPaymentMethodDetailsUsBankAccount.cs
@@ -3,7 +3,13 @@ namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class InboundTransferOriginPaymentMethodDetailsUsBankAccount : StripeEntity<InboundTransferOriginPaymentMethodDetailsUsBankAccount>
     {
         /// <summary>
@@ -11,6 +17,9 @@ public class InboundTransferOriginPaymentMethodDetailsUsBankAccount : StripeEnti
         /// One of: <c>company</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("account_holder_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_type")]
+#endif
         public string AccountHolderType { get; set; }
 
         /// <summary>
@@ -18,12 +27,18 @@ public class InboundTransferOriginPaymentMethodDetailsUsBankAccount : StripeEnti
         /// One of: <c>checking</c>, or <c>savings</c>.
         /// </summary>
         [JsonProperty("account_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_type")]
+#endif
         public string AccountType { get; set; }
 
         /// <summary>
         /// Name of the bank associated with the bank account.
         /// </summary>
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         /// <summary>
@@ -31,12 +46,18 @@ public class InboundTransferOriginPaymentMethodDetailsUsBankAccount : StripeEnti
         /// whether two bank accounts are the same.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
         /// Last four digits of the bank account number.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         #region Expandable Mandate
@@ -46,6 +67,9 @@ public class InboundTransferOriginPaymentMethodDetailsUsBankAccount : StripeEnti
         /// ID of the mandate used to make this payment.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string MandateId
         {
             get => this.InternalMandate?.Id;
@@ -59,6 +83,9 @@ public string MandateId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Mandate Mandate
         {
             get => this.InternalMandate?.ExpandedObject;
@@ -67,6 +94,10 @@ public Mandate Mandate
 
         [JsonProperty("mandate")]
         [JsonConverter(typeof(ExpandableFieldConverter<Mandate>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Mandate>))]
+#endif
         internal ExpandableField<Mandate> InternalMandate { get; set; }
         #endregion
 
@@ -76,12 +107,18 @@ public Mandate Mandate
         /// about money movement timelines for each network type.
         /// </summary>
         [JsonProperty("network")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network")]
+#endif
         public string Network { get; set; }
 
         /// <summary>
         /// Routing number of the bank account.
         /// </summary>
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/InboundTransfers/InboundTransferStatusTransitions.cs b/src/Stripe.net/Entities/Treasury/InboundTransfers/InboundTransferStatusTransitions.cs
index 6140f90b6b..72489dedd9 100644
--- a/src/Stripe.net/Entities/Treasury/InboundTransfers/InboundTransferStatusTransitions.cs
+++ b/src/Stripe.net/Entities/Treasury/InboundTransfers/InboundTransferStatusTransitions.cs
@@ -4,6 +4,9 @@ namespace Stripe.Treasury
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InboundTransferStatusTransitions : StripeEntity<InboundTransferStatusTransitions>
     {
@@ -12,6 +15,10 @@ public class InboundTransferStatusTransitions : StripeEntity<InboundTransferStat
         /// </summary>
         [JsonProperty("canceled_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("canceled_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? CanceledAt { get; set; }
 
         /// <summary>
@@ -19,6 +26,10 @@ public class InboundTransferStatusTransitions : StripeEntity<InboundTransferStat
         /// </summary>
         [JsonProperty("failed_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("failed_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? FailedAt { get; set; }
 
         /// <summary>
@@ -26,6 +37,10 @@ public class InboundTransferStatusTransitions : StripeEntity<InboundTransferStat
         /// </summary>
         [JsonProperty("succeeded_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("succeeded_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? SucceededAt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPayment.cs b/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPayment.cs
index 8ef2e5d39b..64045b8350 100644
--- a/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPayment.cs
+++ b/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPayment.cs
@@ -5,6 +5,9 @@ namespace Stripe.Treasury
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Use <a
@@ -22,30 +25,45 @@ namespace Stripe.Treasury
     /// href="https://docs.stripe.com/docs/treasury/moving-money/financial-accounts/out-of/outbound-payments">Moving
     /// money with Treasury using OutboundPayment objects</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class OutboundPayment : StripeEntity<OutboundPayment>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Amount (in cents) transferred.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
         /// Returns <c>true</c> if the object can be canceled, and <c>false</c> otherwise.
         /// </summary>
         [JsonProperty("cancelable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancelable")]
+#endif
         public bool Cancelable { get; set; }
 
         /// <summary>
@@ -53,6 +71,10 @@ public class OutboundPayment : StripeEntity<OutboundPayment>, IHasId, IHasMetada
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -61,6 +83,9 @@ public class OutboundPayment : StripeEntity<OutboundPayment>, IHasId, IHasMetada
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -68,12 +93,18 @@ public class OutboundPayment : StripeEntity<OutboundPayment>, IHasId, IHasMetada
         /// OutboundPayment is sent.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -81,18 +112,27 @@ public class OutboundPayment : StripeEntity<OutboundPayment>, IHasId, IHasMetada
         /// OutboundPayment was created using <c>destination_payment_method_data</c>.
         /// </summary>
         [JsonProperty("destination_payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination_payment_method")]
+#endif
         public string DestinationPaymentMethod { get; set; }
 
         /// <summary>
         /// Details about the PaymentMethod for an OutboundPayment.
         /// </summary>
         [JsonProperty("destination_payment_method_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination_payment_method_details")]
+#endif
         public OutboundPaymentDestinationPaymentMethodDetails DestinationPaymentMethodDetails { get; set; }
 
         /// <summary>
         /// Details about the end user.
         /// </summary>
         [JsonProperty("end_user_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end_user_details")]
+#endif
         public OutboundPaymentEndUserDetails EndUserDetails { get; set; }
 
         /// <summary>
@@ -100,12 +140,19 @@ public class OutboundPayment : StripeEntity<OutboundPayment>, IHasId, IHasMetada
         /// </summary>
         [JsonProperty("expected_arrival_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expected_arrival_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime ExpectedArrivalDate { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// The FinancialAccount that funds were pulled from.
         /// </summary>
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public string FinancialAccount { get; set; }
 
         /// <summary>
@@ -114,6 +161,9 @@ public class OutboundPayment : StripeEntity<OutboundPayment>, IHasId, IHasMetada
         /// under Stripe's money transmission licenses.
         /// </summary>
         [JsonProperty("hosted_regulatory_receipt_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hosted_regulatory_receipt_url")]
+#endif
         public string HostedRegulatoryReceiptUrl { get; set; }
 
         /// <summary>
@@ -121,6 +171,9 @@ public class OutboundPayment : StripeEntity<OutboundPayment>, IHasId, IHasMetada
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -129,12 +182,18 @@ public class OutboundPayment : StripeEntity<OutboundPayment>, IHasId, IHasMetada
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Details about a returned OutboundPayment. Only set when the status is <c>returned</c>.
         /// </summary>
         [JsonProperty("returned_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("returned_details")]
+#endif
         public OutboundPaymentReturnedDetails ReturnedDetails { get; set; }
 
         /// <summary>
@@ -142,6 +201,9 @@ public class OutboundPayment : StripeEntity<OutboundPayment>, IHasId, IHasMetada
         /// bank statement for external bank transfer).
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
 
         /// <summary>
@@ -155,15 +217,24 @@ public class OutboundPayment : StripeEntity<OutboundPayment>, IHasId, IHasMetada
         /// <c>returned</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         [JsonProperty("status_transitions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_transitions")]
+#endif
         public OutboundPaymentStatusTransitions StatusTransitions { get; set; }
 
         /// <summary>
         /// Details about network-specific tracking information if available.
         /// </summary>
         [JsonProperty("tracking_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tracking_details")]
+#endif
         public OutboundPaymentTrackingDetails TrackingDetails { get; set; }
 
         #region Expandable Transaction
@@ -173,6 +244,9 @@ public class OutboundPayment : StripeEntity<OutboundPayment>, IHasId, IHasMetada
         /// The Transaction associated with this object.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string TransactionId
         {
             get => this.InternalTransaction?.Id;
@@ -186,6 +260,9 @@ public string TransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Transaction Transaction
         {
             get => this.InternalTransaction?.ExpandedObject;
@@ -194,6 +271,10 @@ public Transaction Transaction
 
         [JsonProperty("transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<Transaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Transaction>))]
+#endif
         internal ExpandableField<Transaction> InternalTransaction { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodDetails.cs b/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodDetails.cs
index 60a0621323..9fe448fbc6 100644
--- a/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodDetails.cs
+++ b/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodDetails.cs
@@ -2,13 +2,22 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundPaymentDestinationPaymentMethodDetails : StripeEntity<OutboundPaymentDestinationPaymentMethodDetails>
     {
         [JsonProperty("billing_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_details")]
+#endif
         public OutboundPaymentDestinationPaymentMethodDetailsBillingDetails BillingDetails { get; set; }
 
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public OutboundPaymentDestinationPaymentMethodDetailsFinancialAccount FinancialAccount { get; set; }
 
         /// <summary>
@@ -16,9 +25,15 @@ public class OutboundPaymentDestinationPaymentMethodDetails : StripeEntity<Outbo
         /// One of: <c>financial_account</c>, or <c>us_bank_account</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public OutboundPaymentDestinationPaymentMethodDetailsUsBankAccount UsBankAccount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodDetailsBillingDetails.cs b/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodDetailsBillingDetails.cs
index 46a6476240..fc3294c3fb 100644
--- a/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodDetailsBillingDetails.cs
+++ b/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodDetailsBillingDetails.cs
@@ -2,22 +2,34 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundPaymentDestinationPaymentMethodDetailsBillingDetails : StripeEntity<OutboundPaymentDestinationPaymentMethodDetailsBillingDetails>
     {
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public Address Address { get; set; }
 
         /// <summary>
         /// Email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// Full name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodDetailsFinancialAccount.cs b/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodDetailsFinancialAccount.cs
index 0a600bd1b9..f34c3e92a9 100644
--- a/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodDetailsFinancialAccount.cs
+++ b/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodDetailsFinancialAccount.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundPaymentDestinationPaymentMethodDetailsFinancialAccount : StripeEntity<OutboundPaymentDestinationPaymentMethodDetailsFinancialAccount>, IHasId
     {
@@ -9,12 +12,18 @@ public class OutboundPaymentDestinationPaymentMethodDetailsFinancialAccount : St
         /// Token of the FinancialAccount.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// The rails used to send funds.
         /// </summary>
         [JsonProperty("network")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network")]
+#endif
         public string Network { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodDetailsUsBankAccount.cs b/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodDetailsUsBankAccount.cs
index a38ba79b26..af7749cb3a 100644
--- a/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodDetailsUsBankAccount.cs
+++ b/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodDetailsUsBankAccount.cs
@@ -3,7 +3,13 @@ namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class OutboundPaymentDestinationPaymentMethodDetailsUsBankAccount : StripeEntity<OutboundPaymentDestinationPaymentMethodDetailsUsBankAccount>
     {
         /// <summary>
@@ -11,6 +17,9 @@ public class OutboundPaymentDestinationPaymentMethodDetailsUsBankAccount : Strip
         /// One of: <c>company</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("account_holder_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_type")]
+#endif
         public string AccountHolderType { get; set; }
 
         /// <summary>
@@ -18,12 +27,18 @@ public class OutboundPaymentDestinationPaymentMethodDetailsUsBankAccount : Strip
         /// One of: <c>checking</c>, or <c>savings</c>.
         /// </summary>
         [JsonProperty("account_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_type")]
+#endif
         public string AccountType { get; set; }
 
         /// <summary>
         /// Name of the bank associated with the bank account.
         /// </summary>
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         /// <summary>
@@ -31,12 +46,18 @@ public class OutboundPaymentDestinationPaymentMethodDetailsUsBankAccount : Strip
         /// whether two bank accounts are the same.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
         /// Last four digits of the bank account number.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         #region Expandable Mandate
@@ -46,6 +67,9 @@ public class OutboundPaymentDestinationPaymentMethodDetailsUsBankAccount : Strip
         /// ID of the mandate used to make this payment.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string MandateId
         {
             get => this.InternalMandate?.Id;
@@ -59,6 +83,9 @@ public string MandateId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Mandate Mandate
         {
             get => this.InternalMandate?.ExpandedObject;
@@ -67,6 +94,10 @@ public Mandate Mandate
 
         [JsonProperty("mandate")]
         [JsonConverter(typeof(ExpandableFieldConverter<Mandate>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Mandate>))]
+#endif
         internal ExpandableField<Mandate> InternalMandate { get; set; }
         #endregion
 
@@ -77,12 +108,18 @@ public Mandate Mandate
         /// One of: <c>ach</c>, or <c>us_domestic_wire</c>.
         /// </summary>
         [JsonProperty("network")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network")]
+#endif
         public string Network { get; set; }
 
         /// <summary>
         /// Routing number of the bank account.
         /// </summary>
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentEndUserDetails.cs b/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentEndUserDetails.cs
index d9b281aee6..13842fc597 100644
--- a/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentEndUserDetails.cs
+++ b/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentEndUserDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundPaymentEndUserDetails : StripeEntity<OutboundPaymentEndUserDetails>
     {
@@ -12,6 +15,9 @@ public class OutboundPaymentEndUserDetails : StripeEntity<OutboundPaymentEndUser
         /// blocked.
         /// </summary>
         [JsonProperty("ip_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip_address")]
+#endif
         public string IpAddress { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class OutboundPaymentEndUserDetails : StripeEntity<OutboundPaymentEndUser
         /// user by a platform. Otherwise, <c>false</c>.
         /// </summary>
         [JsonProperty("present")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("present")]
+#endif
         public bool Present { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentReturnedDetails.cs b/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentReturnedDetails.cs
index d497542377..eaaf53e006 100644
--- a/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentReturnedDetails.cs
+++ b/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentReturnedDetails.cs
@@ -3,7 +3,13 @@ namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class OutboundPaymentReturnedDetails : StripeEntity<OutboundPaymentReturnedDetails>
     {
         /// <summary>
@@ -14,6 +20,9 @@ public class OutboundPaymentReturnedDetails : StripeEntity<OutboundPaymentReturn
         /// <c>other</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         #region Expandable Transaction
@@ -23,6 +32,9 @@ public class OutboundPaymentReturnedDetails : StripeEntity<OutboundPaymentReturn
         /// The Transaction associated with this object.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string TransactionId
         {
             get => this.InternalTransaction?.Id;
@@ -36,6 +48,9 @@ public string TransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Transaction Transaction
         {
             get => this.InternalTransaction?.ExpandedObject;
@@ -44,6 +59,10 @@ public Transaction Transaction
 
         [JsonProperty("transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<Transaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Transaction>))]
+#endif
         internal ExpandableField<Transaction> InternalTransaction { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentStatusTransitions.cs b/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentStatusTransitions.cs
index 7150774d70..a907aae5f3 100644
--- a/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentStatusTransitions.cs
+++ b/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentStatusTransitions.cs
@@ -4,6 +4,9 @@ namespace Stripe.Treasury
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundPaymentStatusTransitions : StripeEntity<OutboundPaymentStatusTransitions>
     {
@@ -12,6 +15,10 @@ public class OutboundPaymentStatusTransitions : StripeEntity<OutboundPaymentStat
         /// </summary>
         [JsonProperty("canceled_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("canceled_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? CanceledAt { get; set; }
 
         /// <summary>
@@ -19,6 +26,10 @@ public class OutboundPaymentStatusTransitions : StripeEntity<OutboundPaymentStat
         /// </summary>
         [JsonProperty("failed_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("failed_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? FailedAt { get; set; }
 
         /// <summary>
@@ -26,6 +37,10 @@ public class OutboundPaymentStatusTransitions : StripeEntity<OutboundPaymentStat
         /// </summary>
         [JsonProperty("posted_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("posted_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? PostedAt { get; set; }
 
         /// <summary>
@@ -33,6 +48,10 @@ public class OutboundPaymentStatusTransitions : StripeEntity<OutboundPaymentStat
         /// </summary>
         [JsonProperty("returned_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("returned_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ReturnedAt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentTrackingDetails.cs b/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentTrackingDetails.cs
index c3b4ec4431..7779cb9a9f 100644
--- a/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentTrackingDetails.cs
+++ b/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentTrackingDetails.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundPaymentTrackingDetails : StripeEntity<OutboundPaymentTrackingDetails>
     {
         [JsonProperty("ach")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ach")]
+#endif
         public OutboundPaymentTrackingDetailsAch Ach { get; set; }
 
         /// <summary>
@@ -13,9 +19,15 @@ public class OutboundPaymentTrackingDetails : StripeEntity<OutboundPaymentTracki
         /// One of: <c>ach</c>, or <c>us_domestic_wire</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         [JsonProperty("us_domestic_wire")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_domestic_wire")]
+#endif
         public OutboundPaymentTrackingDetailsUsDomesticWire UsDomesticWire { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentTrackingDetailsAch.cs b/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentTrackingDetailsAch.cs
index 3641758310..dd208d9096 100644
--- a/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentTrackingDetailsAch.cs
+++ b/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentTrackingDetailsAch.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundPaymentTrackingDetailsAch : StripeEntity<OutboundPaymentTrackingDetailsAch>
     {
@@ -9,6 +12,9 @@ public class OutboundPaymentTrackingDetailsAch : StripeEntity<OutboundPaymentTra
         /// ACH trace ID of the OutboundPayment for payments sent over the <c>ach</c> network.
         /// </summary>
         [JsonProperty("trace_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trace_id")]
+#endif
         public string TraceId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentTrackingDetailsUsDomesticWire.cs b/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentTrackingDetailsUsDomesticWire.cs
index 179e8c6053..e31b34d53f 100644
--- a/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentTrackingDetailsUsDomesticWire.cs
+++ b/src/Stripe.net/Entities/Treasury/OutboundPayments/OutboundPaymentTrackingDetailsUsDomesticWire.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundPaymentTrackingDetailsUsDomesticWire : StripeEntity<OutboundPaymentTrackingDetailsUsDomesticWire>
     {
@@ -10,18 +13,27 @@ public class OutboundPaymentTrackingDetailsUsDomesticWire : StripeEntity<Outboun
         /// <c>us_domestic_wire</c> network.
         /// </summary>
         [JsonProperty("chips")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("chips")]
+#endif
         public string Chips { get; set; }
 
         /// <summary>
         /// IMAD of the OutboundPayment for payments sent over the <c>us_domestic_wire</c> network.
         /// </summary>
         [JsonProperty("imad")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("imad")]
+#endif
         public string Imad { get; set; }
 
         /// <summary>
         /// OMAD of the OutboundPayment for payments sent over the <c>us_domestic_wire</c> network.
         /// </summary>
         [JsonProperty("omad")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("omad")]
+#endif
         public string Omad { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransfer.cs b/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransfer.cs
index 0377349d62..c1acd40549 100644
--- a/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransfer.cs
+++ b/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransfer.cs
@@ -5,6 +5,9 @@ namespace Stripe.Treasury
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Use <a
@@ -24,30 +27,45 @@ namespace Stripe.Treasury
     /// href="https://docs.stripe.com/docs/treasury/moving-money/financial-accounts/out-of/outbound-transfers">Moving
     /// money with Treasury using OutboundTransfer objects</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class OutboundTransfer : StripeEntity<OutboundTransfer>, IHasId, IHasMetadata, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Amount (in cents) transferred.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
         /// Returns <c>true</c> if the object can be canceled, and <c>false</c> otherwise.
         /// </summary>
         [JsonProperty("cancelable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancelable")]
+#endif
         public bool Cancelable { get; set; }
 
         /// <summary>
@@ -55,6 +73,10 @@ public class OutboundTransfer : StripeEntity<OutboundTransfer>, IHasId, IHasMeta
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -63,21 +85,33 @@ public class OutboundTransfer : StripeEntity<OutboundTransfer>, IHasId, IHasMeta
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// The PaymentMethod used as the payment instrument for an OutboundTransfer.
         /// </summary>
         [JsonProperty("destination_payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination_payment_method")]
+#endif
         public string DestinationPaymentMethod { get; set; }
 
         [JsonProperty("destination_payment_method_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination_payment_method_details")]
+#endif
         public OutboundTransferDestinationPaymentMethodDetails DestinationPaymentMethodDetails { get; set; }
 
         /// <summary>
@@ -85,12 +119,19 @@ public class OutboundTransfer : StripeEntity<OutboundTransfer>, IHasId, IHasMeta
         /// </summary>
         [JsonProperty("expected_arrival_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expected_arrival_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime ExpectedArrivalDate { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// The FinancialAccount that funds were pulled from.
         /// </summary>
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public string FinancialAccount { get; set; }
 
         /// <summary>
@@ -99,6 +140,9 @@ public class OutboundTransfer : StripeEntity<OutboundTransfer>, IHasId, IHasMeta
         /// under Stripe's money transmission licenses.
         /// </summary>
         [JsonProperty("hosted_regulatory_receipt_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hosted_regulatory_receipt_url")]
+#endif
         public string HostedRegulatoryReceiptUrl { get; set; }
 
         /// <summary>
@@ -106,6 +150,9 @@ public class OutboundTransfer : StripeEntity<OutboundTransfer>, IHasId, IHasMeta
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -114,18 +161,27 @@ public class OutboundTransfer : StripeEntity<OutboundTransfer>, IHasId, IHasMeta
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Details about a returned OutboundTransfer. Only set when the status is <c>returned</c>.
         /// </summary>
         [JsonProperty("returned_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("returned_details")]
+#endif
         public OutboundTransferReturnedDetails ReturnedDetails { get; set; }
 
         /// <summary>
         /// Information about the OutboundTransfer to be sent to the recipient account.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
 
         /// <summary>
@@ -139,15 +195,24 @@ public class OutboundTransfer : StripeEntity<OutboundTransfer>, IHasId, IHasMeta
         /// <c>returned</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         [JsonProperty("status_transitions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_transitions")]
+#endif
         public OutboundTransferStatusTransitions StatusTransitions { get; set; }
 
         /// <summary>
         /// Details about network-specific tracking information if available.
         /// </summary>
         [JsonProperty("tracking_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tracking_details")]
+#endif
         public OutboundTransferTrackingDetails TrackingDetails { get; set; }
 
         #region Expandable Transaction
@@ -157,6 +222,9 @@ public class OutboundTransfer : StripeEntity<OutboundTransfer>, IHasId, IHasMeta
         /// The Transaction associated with this object.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string TransactionId
         {
             get => this.InternalTransaction?.Id;
@@ -170,6 +238,9 @@ public string TransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Transaction Transaction
         {
             get => this.InternalTransaction?.ExpandedObject;
@@ -178,6 +249,10 @@ public Transaction Transaction
 
         [JsonProperty("transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<Transaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Transaction>))]
+#endif
         internal ExpandableField<Transaction> InternalTransaction { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferDestinationPaymentMethodDetails.cs b/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferDestinationPaymentMethodDetails.cs
index 2d963d7a28..715ca1dd1a 100644
--- a/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferDestinationPaymentMethodDetails.cs
+++ b/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferDestinationPaymentMethodDetails.cs
@@ -2,13 +2,22 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundTransferDestinationPaymentMethodDetails : StripeEntity<OutboundTransferDestinationPaymentMethodDetails>
     {
         [JsonProperty("billing_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_details")]
+#endif
         public OutboundTransferDestinationPaymentMethodDetailsBillingDetails BillingDetails { get; set; }
 
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public OutboundTransferDestinationPaymentMethodDetailsFinancialAccount FinancialAccount { get; set; }
 
         /// <summary>
@@ -16,9 +25,15 @@ public class OutboundTransferDestinationPaymentMethodDetails : StripeEntity<Outb
         /// One of: <c>financial_account</c>, or <c>us_bank_account</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public OutboundTransferDestinationPaymentMethodDetailsUsBankAccount UsBankAccount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferDestinationPaymentMethodDetailsBillingDetails.cs b/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferDestinationPaymentMethodDetailsBillingDetails.cs
index 70af92cf5c..e2f374fe1a 100644
--- a/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferDestinationPaymentMethodDetailsBillingDetails.cs
+++ b/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferDestinationPaymentMethodDetailsBillingDetails.cs
@@ -2,22 +2,34 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundTransferDestinationPaymentMethodDetailsBillingDetails : StripeEntity<OutboundTransferDestinationPaymentMethodDetailsBillingDetails>
     {
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public Address Address { get; set; }
 
         /// <summary>
         /// Email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// Full name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferDestinationPaymentMethodDetailsFinancialAccount.cs b/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferDestinationPaymentMethodDetailsFinancialAccount.cs
index 9ed332c626..be8e49644e 100644
--- a/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferDestinationPaymentMethodDetailsFinancialAccount.cs
+++ b/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferDestinationPaymentMethodDetailsFinancialAccount.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundTransferDestinationPaymentMethodDetailsFinancialAccount : StripeEntity<OutboundTransferDestinationPaymentMethodDetailsFinancialAccount>, IHasId
     {
@@ -9,12 +12,18 @@ public class OutboundTransferDestinationPaymentMethodDetailsFinancialAccount : S
         /// Token of the FinancialAccount.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// The rails used to send funds.
         /// </summary>
         [JsonProperty("network")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network")]
+#endif
         public string Network { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferDestinationPaymentMethodDetailsUsBankAccount.cs b/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferDestinationPaymentMethodDetailsUsBankAccount.cs
index 8c4ff29947..883232db4f 100644
--- a/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferDestinationPaymentMethodDetailsUsBankAccount.cs
+++ b/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferDestinationPaymentMethodDetailsUsBankAccount.cs
@@ -3,7 +3,13 @@ namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class OutboundTransferDestinationPaymentMethodDetailsUsBankAccount : StripeEntity<OutboundTransferDestinationPaymentMethodDetailsUsBankAccount>
     {
         /// <summary>
@@ -11,6 +17,9 @@ public class OutboundTransferDestinationPaymentMethodDetailsUsBankAccount : Stri
         /// One of: <c>company</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("account_holder_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_type")]
+#endif
         public string AccountHolderType { get; set; }
 
         /// <summary>
@@ -18,12 +27,18 @@ public class OutboundTransferDestinationPaymentMethodDetailsUsBankAccount : Stri
         /// One of: <c>checking</c>, or <c>savings</c>.
         /// </summary>
         [JsonProperty("account_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_type")]
+#endif
         public string AccountType { get; set; }
 
         /// <summary>
         /// Name of the bank associated with the bank account.
         /// </summary>
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         /// <summary>
@@ -31,12 +46,18 @@ public class OutboundTransferDestinationPaymentMethodDetailsUsBankAccount : Stri
         /// whether two bank accounts are the same.
         /// </summary>
         [JsonProperty("fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fingerprint")]
+#endif
         public string Fingerprint { get; set; }
 
         /// <summary>
         /// Last four digits of the bank account number.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         #region Expandable Mandate
@@ -46,6 +67,9 @@ public class OutboundTransferDestinationPaymentMethodDetailsUsBankAccount : Stri
         /// ID of the mandate used to make this payment.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string MandateId
         {
             get => this.InternalMandate?.Id;
@@ -59,6 +83,9 @@ public string MandateId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Mandate Mandate
         {
             get => this.InternalMandate?.ExpandedObject;
@@ -67,6 +94,10 @@ public Mandate Mandate
 
         [JsonProperty("mandate")]
         [JsonConverter(typeof(ExpandableFieldConverter<Mandate>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Mandate>))]
+#endif
         internal ExpandableField<Mandate> InternalMandate { get; set; }
         #endregion
 
@@ -77,12 +108,18 @@ public Mandate Mandate
         /// One of: <c>ach</c>, or <c>us_domestic_wire</c>.
         /// </summary>
         [JsonProperty("network")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network")]
+#endif
         public string Network { get; set; }
 
         /// <summary>
         /// Routing number of the bank account.
         /// </summary>
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferReturnedDetails.cs b/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferReturnedDetails.cs
index 1e4859c9f6..973baed018 100644
--- a/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferReturnedDetails.cs
+++ b/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferReturnedDetails.cs
@@ -3,7 +3,13 @@ namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class OutboundTransferReturnedDetails : StripeEntity<OutboundTransferReturnedDetails>
     {
         /// <summary>
@@ -14,6 +20,9 @@ public class OutboundTransferReturnedDetails : StripeEntity<OutboundTransferRetu
         /// <c>other</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         #region Expandable Transaction
@@ -23,6 +32,9 @@ public class OutboundTransferReturnedDetails : StripeEntity<OutboundTransferRetu
         /// The Transaction associated with this object.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string TransactionId
         {
             get => this.InternalTransaction?.Id;
@@ -36,6 +48,9 @@ public string TransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Transaction Transaction
         {
             get => this.InternalTransaction?.ExpandedObject;
@@ -44,6 +59,10 @@ public Transaction Transaction
 
         [JsonProperty("transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<Transaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Transaction>))]
+#endif
         internal ExpandableField<Transaction> InternalTransaction { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferStatusTransitions.cs b/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferStatusTransitions.cs
index eb48106813..3851fd4680 100644
--- a/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferStatusTransitions.cs
+++ b/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferStatusTransitions.cs
@@ -4,6 +4,9 @@ namespace Stripe.Treasury
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundTransferStatusTransitions : StripeEntity<OutboundTransferStatusTransitions>
     {
@@ -12,6 +15,10 @@ public class OutboundTransferStatusTransitions : StripeEntity<OutboundTransferSt
         /// </summary>
         [JsonProperty("canceled_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("canceled_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? CanceledAt { get; set; }
 
         /// <summary>
@@ -19,6 +26,10 @@ public class OutboundTransferStatusTransitions : StripeEntity<OutboundTransferSt
         /// </summary>
         [JsonProperty("failed_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("failed_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? FailedAt { get; set; }
 
         /// <summary>
@@ -26,6 +37,10 @@ public class OutboundTransferStatusTransitions : StripeEntity<OutboundTransferSt
         /// </summary>
         [JsonProperty("posted_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("posted_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? PostedAt { get; set; }
 
         /// <summary>
@@ -33,6 +48,10 @@ public class OutboundTransferStatusTransitions : StripeEntity<OutboundTransferSt
         /// </summary>
         [JsonProperty("returned_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("returned_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ReturnedAt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferTrackingDetails.cs b/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferTrackingDetails.cs
index de26414e0c..53b5b9a8d6 100644
--- a/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferTrackingDetails.cs
+++ b/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferTrackingDetails.cs
@@ -2,10 +2,16 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundTransferTrackingDetails : StripeEntity<OutboundTransferTrackingDetails>
     {
         [JsonProperty("ach")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ach")]
+#endif
         public OutboundTransferTrackingDetailsAch Ach { get; set; }
 
         /// <summary>
@@ -13,9 +19,15 @@ public class OutboundTransferTrackingDetails : StripeEntity<OutboundTransferTrac
         /// One of: <c>ach</c>, or <c>us_domestic_wire</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         [JsonProperty("us_domestic_wire")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_domestic_wire")]
+#endif
         public OutboundTransferTrackingDetailsUsDomesticWire UsDomesticWire { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferTrackingDetailsAch.cs b/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferTrackingDetailsAch.cs
index 0a5e4e37f1..2f95e3475d 100644
--- a/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferTrackingDetailsAch.cs
+++ b/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferTrackingDetailsAch.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundTransferTrackingDetailsAch : StripeEntity<OutboundTransferTrackingDetailsAch>
     {
@@ -9,6 +12,9 @@ public class OutboundTransferTrackingDetailsAch : StripeEntity<OutboundTransferT
         /// ACH trace ID of the OutboundTransfer for transfers sent over the <c>ach</c> network.
         /// </summary>
         [JsonProperty("trace_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trace_id")]
+#endif
         public string TraceId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferTrackingDetailsUsDomesticWire.cs b/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferTrackingDetailsUsDomesticWire.cs
index 6f68de05a9..2ac9d73eef 100644
--- a/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferTrackingDetailsUsDomesticWire.cs
+++ b/src/Stripe.net/Entities/Treasury/OutboundTransfers/OutboundTransferTrackingDetailsUsDomesticWire.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundTransferTrackingDetailsUsDomesticWire : StripeEntity<OutboundTransferTrackingDetailsUsDomesticWire>
     {
@@ -10,6 +13,9 @@ public class OutboundTransferTrackingDetailsUsDomesticWire : StripeEntity<Outbou
         /// <c>us_domestic_wire</c> network.
         /// </summary>
         [JsonProperty("chips")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("chips")]
+#endif
         public string Chips { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class OutboundTransferTrackingDetailsUsDomesticWire : StripeEntity<Outbou
         /// network.
         /// </summary>
         [JsonProperty("imad")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("imad")]
+#endif
         public string Imad { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class OutboundTransferTrackingDetailsUsDomesticWire : StripeEntity<Outbou
         /// network.
         /// </summary>
         [JsonProperty("omad")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("omad")]
+#endif
         public string Omad { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCredit.cs b/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCredit.cs
index 894652d633..547c12d94f 100644
--- a/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCredit.cs
+++ b/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCredit.cs
@@ -4,30 +4,45 @@ namespace Stripe.Treasury
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// ReceivedCredits represent funds sent to a <a
     /// href="https://stripe.com/docs/api#financial_accounts">FinancialAccount</a> (for example,
     /// via ACH or wire). These money movements are not initiated from the FinancialAccount.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class ReceivedCredit : StripeEntity<ReceivedCredit>, IHasId, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Amount (in cents) transferred.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -35,6 +50,10 @@ public class ReceivedCredit : StripeEntity<ReceivedCredit>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -43,12 +62,18 @@ public class ReceivedCredit : StripeEntity<ReceivedCredit>, IHasId, IHasObject
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -58,12 +83,18 @@ public class ReceivedCredit : StripeEntity<ReceivedCredit>, IHasId, IHasObject
         /// or <c>other</c>.
         /// </summary>
         [JsonProperty("failure_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("failure_code")]
+#endif
         public string FailureCode { get; set; }
 
         /// <summary>
         /// The FinancialAccount that received the funds.
         /// </summary>
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public string FinancialAccount { get; set; }
 
         /// <summary>
@@ -72,12 +103,21 @@ public class ReceivedCredit : StripeEntity<ReceivedCredit>, IHasId, IHasObject
         /// under Stripe's money transmission licenses.
         /// </summary>
         [JsonProperty("hosted_regulatory_receipt_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hosted_regulatory_receipt_url")]
+#endif
         public string HostedRegulatoryReceiptUrl { get; set; }
 
         [JsonProperty("initiating_payment_method_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("initiating_payment_method_details")]
+#endif
         public ReceivedCreditInitiatingPaymentMethodDetails InitiatingPaymentMethodDetails { get; set; }
 
         [JsonProperty("linked_flows")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("linked_flows")]
+#endif
         public ReceivedCreditLinkedFlows LinkedFlows { get; set; }
 
         /// <summary>
@@ -85,6 +125,9 @@ public class ReceivedCredit : StripeEntity<ReceivedCredit>, IHasId, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -92,12 +135,18 @@ public class ReceivedCredit : StripeEntity<ReceivedCredit>, IHasId, IHasObject
         /// One of: <c>ach</c>, <c>card</c>, <c>stripe</c>, or <c>us_domestic_wire</c>.
         /// </summary>
         [JsonProperty("network")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network")]
+#endif
         public string Network { get; set; }
 
         /// <summary>
         /// Details describing when a ReceivedCredit may be reversed.
         /// </summary>
         [JsonProperty("reversal_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reversal_details")]
+#endif
         public ReceivedCreditReversalDetails ReversalDetails { get; set; }
 
         /// <summary>
@@ -107,6 +156,9 @@ public class ReceivedCredit : StripeEntity<ReceivedCredit>, IHasId, IHasObject
         /// One of: <c>failed</c>, or <c>succeeded</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         #region Expandable Transaction
@@ -116,6 +168,9 @@ public class ReceivedCredit : StripeEntity<ReceivedCredit>, IHasId, IHasObject
         /// The Transaction associated with this object.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string TransactionId
         {
             get => this.InternalTransaction?.Id;
@@ -129,6 +184,9 @@ public string TransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Transaction Transaction
         {
             get => this.InternalTransaction?.ExpandedObject;
@@ -137,6 +195,10 @@ public Transaction Transaction
 
         [JsonProperty("transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<Transaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Transaction>))]
+#endif
         internal ExpandableField<Transaction> InternalTransaction { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCreditInitiatingPaymentMethodDetails.cs b/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCreditInitiatingPaymentMethodDetails.cs
index c611ce27a8..e5754c0b5c 100644
--- a/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCreditInitiatingPaymentMethodDetails.cs
+++ b/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCreditInitiatingPaymentMethodDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReceivedCreditInitiatingPaymentMethodDetails : StripeEntity<ReceivedCreditInitiatingPaymentMethodDetails>
     {
@@ -9,12 +12,21 @@ public class ReceivedCreditInitiatingPaymentMethodDetails : StripeEntity<Receive
         /// Set when <c>type</c> is <c>balance</c>.
         /// </summary>
         [JsonProperty("balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("balance")]
+#endif
         public string Balance { get; set; }
 
         [JsonProperty("billing_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_details")]
+#endif
         public ReceivedCreditInitiatingPaymentMethodDetailsBillingDetails BillingDetails { get; set; }
 
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public ReceivedCreditInitiatingPaymentMethodDetailsFinancialAccount FinancialAccount { get; set; }
 
         /// <summary>
@@ -22,6 +34,9 @@ public class ReceivedCreditInitiatingPaymentMethodDetails : StripeEntity<Receive
         /// href="https://stripe.com/docs/api#issuing_cards">Issuing Card</a> ID.
         /// </summary>
         [JsonProperty("issuing_card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuing_card")]
+#endif
         public string IssuingCard { get; set; }
 
         /// <summary>
@@ -31,9 +46,15 @@ public class ReceivedCreditInitiatingPaymentMethodDetails : StripeEntity<Receive
         /// <c>us_bank_account</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public ReceivedCreditInitiatingPaymentMethodDetailsUsBankAccount UsBankAccount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCreditInitiatingPaymentMethodDetailsBillingDetails.cs b/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCreditInitiatingPaymentMethodDetailsBillingDetails.cs
index d8e750c56f..d2d6b4ca6a 100644
--- a/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCreditInitiatingPaymentMethodDetailsBillingDetails.cs
+++ b/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCreditInitiatingPaymentMethodDetailsBillingDetails.cs
@@ -2,22 +2,34 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReceivedCreditInitiatingPaymentMethodDetailsBillingDetails : StripeEntity<ReceivedCreditInitiatingPaymentMethodDetailsBillingDetails>
     {
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public Address Address { get; set; }
 
         /// <summary>
         /// Email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// Full name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCreditInitiatingPaymentMethodDetailsFinancialAccount.cs b/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCreditInitiatingPaymentMethodDetailsFinancialAccount.cs
index 402ed22516..e3729984d8 100644
--- a/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCreditInitiatingPaymentMethodDetailsFinancialAccount.cs
+++ b/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCreditInitiatingPaymentMethodDetailsFinancialAccount.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReceivedCreditInitiatingPaymentMethodDetailsFinancialAccount : StripeEntity<ReceivedCreditInitiatingPaymentMethodDetailsFinancialAccount>, IHasId
     {
@@ -9,6 +12,9 @@ public class ReceivedCreditInitiatingPaymentMethodDetailsFinancialAccount : Stri
         /// The FinancialAccount ID.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class ReceivedCreditInitiatingPaymentMethodDetailsFinancialAccount : Stri
         /// <c>stripe</c>.
         /// </summary>
         [JsonProperty("network")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network")]
+#endif
         public string Network { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCreditInitiatingPaymentMethodDetailsUsBankAccount.cs b/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCreditInitiatingPaymentMethodDetailsUsBankAccount.cs
index f5a4e14d76..c415747327 100644
--- a/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCreditInitiatingPaymentMethodDetailsUsBankAccount.cs
+++ b/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCreditInitiatingPaymentMethodDetailsUsBankAccount.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReceivedCreditInitiatingPaymentMethodDetailsUsBankAccount : StripeEntity<ReceivedCreditInitiatingPaymentMethodDetailsUsBankAccount>
     {
@@ -9,18 +12,27 @@ public class ReceivedCreditInitiatingPaymentMethodDetailsUsBankAccount : StripeE
         /// Bank name.
         /// </summary>
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         /// <summary>
         /// The last four digits of the bank account number.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
         /// The routing number for the bank account.
         /// </summary>
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCreditLinkedFlows.cs b/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCreditLinkedFlows.cs
index ee18217c26..2f05060454 100644
--- a/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCreditLinkedFlows.cs
+++ b/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCreditLinkedFlows.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReceivedCreditLinkedFlows : StripeEntity<ReceivedCreditLinkedFlows>
     {
@@ -9,6 +12,9 @@ public class ReceivedCreditLinkedFlows : StripeEntity<ReceivedCreditLinkedFlows>
         /// The CreditReversal created as a result of this ReceivedCredit being reversed.
         /// </summary>
         [JsonProperty("credit_reversal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("credit_reversal")]
+#endif
         public string CreditReversal { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class ReceivedCreditLinkedFlows : StripeEntity<ReceivedCreditLinkedFlows>
         /// object.
         /// </summary>
         [JsonProperty("issuing_authorization")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuing_authorization")]
+#endif
         public string IssuingAuthorization { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class ReceivedCreditLinkedFlows : StripeEntity<ReceivedCreditLinkedFlows>
         /// href="https://stripe.com/docs/api#issuing_transactions">Issuing transaction</a> object.
         /// </summary>
         [JsonProperty("issuing_transaction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuing_transaction")]
+#endif
         public string IssuingTransaction { get; set; }
 
         /// <summary>
@@ -32,12 +44,18 @@ public class ReceivedCreditLinkedFlows : StripeEntity<ReceivedCreditLinkedFlows>
         /// CreditReversals.
         /// </summary>
         [JsonProperty("source_flow")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source_flow")]
+#endif
         public string SourceFlow { get; set; }
 
         /// <summary>
         /// The expandable object of the source flow.
         /// </summary>
         [JsonProperty("source_flow_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source_flow_details")]
+#endif
         public ReceivedCreditLinkedFlowsSourceFlowDetails SourceFlowDetails { get; set; }
 
         /// <summary>
@@ -45,6 +63,9 @@ public class ReceivedCreditLinkedFlows : StripeEntity<ReceivedCreditLinkedFlows>
         /// <c>outbound_payment</c>).
         /// </summary>
         [JsonProperty("source_flow_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source_flow_type")]
+#endif
         public string SourceFlowType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCreditLinkedFlowsSourceFlowDetails.cs b/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCreditLinkedFlowsSourceFlowDetails.cs
index 01f1684b1c..7586676369 100644
--- a/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCreditLinkedFlowsSourceFlowDetails.cs
+++ b/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCreditLinkedFlowsSourceFlowDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReceivedCreditLinkedFlowsSourceFlowDetails : StripeEntity<ReceivedCreditLinkedFlowsSourceFlowDetails>
     {
@@ -12,6 +15,9 @@ public class ReceivedCreditLinkedFlowsSourceFlowDetails : StripeEntity<ReceivedC
         /// object known as a CreditReversal.
         /// </summary>
         [JsonProperty("credit_reversal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("credit_reversal")]
+#endif
         public CreditReversal CreditReversal { get; set; }
 
         /// <summary>
@@ -31,6 +37,9 @@ public class ReceivedCreditLinkedFlowsSourceFlowDetails : StripeEntity<ReceivedC
         /// money with Treasury using OutboundPayment objects</a>.
         /// </summary>
         [JsonProperty("outbound_payment")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("outbound_payment")]
+#endif
         public OutboundPayment OutboundPayment { get; set; }
 
         /// <summary>
@@ -52,6 +61,9 @@ public class ReceivedCreditLinkedFlowsSourceFlowDetails : StripeEntity<ReceivedC
         /// money with Treasury using OutboundTransfer objects</a>.
         /// </summary>
         [JsonProperty("outbound_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("outbound_transfer")]
+#endif
         public OutboundTransfer OutboundTransfer { get; set; }
 
         /// <summary>
@@ -65,6 +77,9 @@ public class ReceivedCreditLinkedFlowsSourceFlowDetails : StripeEntity<ReceivedC
         /// Related guide: <a href="https://stripe.com/docs/payouts">Receiving payouts</a>.
         /// </summary>
         [JsonProperty("payout")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payout")]
+#endif
         public Payout Payout { get; set; }
 
         /// <summary>
@@ -73,6 +88,9 @@ public class ReceivedCreditLinkedFlowsSourceFlowDetails : StripeEntity<ReceivedC
         /// <c>outbound_transfer</c>, or <c>payout</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCreditReversalDetails.cs b/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCreditReversalDetails.cs
index ca0e04a69f..5f06db71a8 100644
--- a/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCreditReversalDetails.cs
+++ b/src/Stripe.net/Entities/Treasury/ReceivedCredits/ReceivedCreditReversalDetails.cs
@@ -4,6 +4,9 @@ namespace Stripe.Treasury
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReceivedCreditReversalDetails : StripeEntity<ReceivedCreditReversalDetails>
     {
@@ -12,6 +15,10 @@ public class ReceivedCreditReversalDetails : StripeEntity<ReceivedCreditReversal
         /// </summary>
         [JsonProperty("deadline")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deadline")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? Deadline { get; set; }
 
         /// <summary>
@@ -20,6 +27,9 @@ public class ReceivedCreditReversalDetails : StripeEntity<ReceivedCreditReversal
         /// <c>other</c>, or <c>source_flow_restricted</c>.
         /// </summary>
         [JsonProperty("restricted_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("restricted_reason")]
+#endif
         public string RestrictedReason { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/ReceivedDebits/ReceivedDebit.cs b/src/Stripe.net/Entities/Treasury/ReceivedDebits/ReceivedDebit.cs
index f8403945f9..d9867440b0 100644
--- a/src/Stripe.net/Entities/Treasury/ReceivedDebits/ReceivedDebit.cs
+++ b/src/Stripe.net/Entities/Treasury/ReceivedDebits/ReceivedDebit.cs
@@ -4,30 +4,45 @@ namespace Stripe.Treasury
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// ReceivedDebits represent funds pulled from a <a
     /// href="https://stripe.com/docs/api#financial_accounts">FinancialAccount</a>. These are
     /// not initiated from the FinancialAccount.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class ReceivedDebit : StripeEntity<ReceivedDebit>, IHasId, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Amount (in cents) transferred.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
@@ -35,6 +50,10 @@ public class ReceivedDebit : StripeEntity<ReceivedDebit>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -43,12 +62,18 @@ public class ReceivedDebit : StripeEntity<ReceivedDebit>, IHasId, IHasObject
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -58,12 +83,18 @@ public class ReceivedDebit : StripeEntity<ReceivedDebit>, IHasId, IHasObject
         /// <c>international_transaction</c>, or <c>other</c>.
         /// </summary>
         [JsonProperty("failure_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("failure_code")]
+#endif
         public string FailureCode { get; set; }
 
         /// <summary>
         /// The FinancialAccount that funds were pulled from.
         /// </summary>
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public string FinancialAccount { get; set; }
 
         /// <summary>
@@ -72,12 +103,21 @@ public class ReceivedDebit : StripeEntity<ReceivedDebit>, IHasId, IHasObject
         /// under Stripe's money transmission licenses.
         /// </summary>
         [JsonProperty("hosted_regulatory_receipt_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hosted_regulatory_receipt_url")]
+#endif
         public string HostedRegulatoryReceiptUrl { get; set; }
 
         [JsonProperty("initiating_payment_method_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("initiating_payment_method_details")]
+#endif
         public ReceivedDebitInitiatingPaymentMethodDetails InitiatingPaymentMethodDetails { get; set; }
 
         [JsonProperty("linked_flows")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("linked_flows")]
+#endif
         public ReceivedDebitLinkedFlows LinkedFlows { get; set; }
 
         /// <summary>
@@ -85,6 +125,9 @@ public class ReceivedDebit : StripeEntity<ReceivedDebit>, IHasId, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -92,12 +135,18 @@ public class ReceivedDebit : StripeEntity<ReceivedDebit>, IHasId, IHasObject
         /// One of: <c>ach</c>, <c>card</c>, or <c>stripe</c>.
         /// </summary>
         [JsonProperty("network")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network")]
+#endif
         public string Network { get; set; }
 
         /// <summary>
         /// Details describing when a ReceivedDebit might be reversed.
         /// </summary>
         [JsonProperty("reversal_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reversal_details")]
+#endif
         public ReceivedDebitReversalDetails ReversalDetails { get; set; }
 
         /// <summary>
@@ -107,6 +156,9 @@ public class ReceivedDebit : StripeEntity<ReceivedDebit>, IHasId, IHasObject
         /// One of: <c>failed</c>, or <c>succeeded</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         #region Expandable Transaction
@@ -116,6 +168,9 @@ public class ReceivedDebit : StripeEntity<ReceivedDebit>, IHasId, IHasObject
         /// The Transaction associated with this object.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string TransactionId
         {
             get => this.InternalTransaction?.Id;
@@ -129,6 +184,9 @@ public string TransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Transaction Transaction
         {
             get => this.InternalTransaction?.ExpandedObject;
@@ -137,6 +195,10 @@ public Transaction Transaction
 
         [JsonProperty("transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<Transaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Transaction>))]
+#endif
         internal ExpandableField<Transaction> InternalTransaction { get; set; }
         #endregion
     }
diff --git a/src/Stripe.net/Entities/Treasury/ReceivedDebits/ReceivedDebitInitiatingPaymentMethodDetails.cs b/src/Stripe.net/Entities/Treasury/ReceivedDebits/ReceivedDebitInitiatingPaymentMethodDetails.cs
index 4d27865ebc..078aee4bdc 100644
--- a/src/Stripe.net/Entities/Treasury/ReceivedDebits/ReceivedDebitInitiatingPaymentMethodDetails.cs
+++ b/src/Stripe.net/Entities/Treasury/ReceivedDebits/ReceivedDebitInitiatingPaymentMethodDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReceivedDebitInitiatingPaymentMethodDetails : StripeEntity<ReceivedDebitInitiatingPaymentMethodDetails>
     {
@@ -9,12 +12,21 @@ public class ReceivedDebitInitiatingPaymentMethodDetails : StripeEntity<Received
         /// Set when <c>type</c> is <c>balance</c>.
         /// </summary>
         [JsonProperty("balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("balance")]
+#endif
         public string Balance { get; set; }
 
         [JsonProperty("billing_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_details")]
+#endif
         public ReceivedDebitInitiatingPaymentMethodDetailsBillingDetails BillingDetails { get; set; }
 
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public ReceivedDebitInitiatingPaymentMethodDetailsFinancialAccount FinancialAccount { get; set; }
 
         /// <summary>
@@ -22,6 +34,9 @@ public class ReceivedDebitInitiatingPaymentMethodDetails : StripeEntity<Received
         /// href="https://stripe.com/docs/api#issuing_cards">Issuing Card</a> ID.
         /// </summary>
         [JsonProperty("issuing_card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuing_card")]
+#endif
         public string IssuingCard { get; set; }
 
         /// <summary>
@@ -31,9 +46,15 @@ public class ReceivedDebitInitiatingPaymentMethodDetails : StripeEntity<Received
         /// <c>us_bank_account</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public ReceivedDebitInitiatingPaymentMethodDetailsUsBankAccount UsBankAccount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/ReceivedDebits/ReceivedDebitInitiatingPaymentMethodDetailsBillingDetails.cs b/src/Stripe.net/Entities/Treasury/ReceivedDebits/ReceivedDebitInitiatingPaymentMethodDetailsBillingDetails.cs
index 3835222b04..18c138690b 100644
--- a/src/Stripe.net/Entities/Treasury/ReceivedDebits/ReceivedDebitInitiatingPaymentMethodDetailsBillingDetails.cs
+++ b/src/Stripe.net/Entities/Treasury/ReceivedDebits/ReceivedDebitInitiatingPaymentMethodDetailsBillingDetails.cs
@@ -2,22 +2,34 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReceivedDebitInitiatingPaymentMethodDetailsBillingDetails : StripeEntity<ReceivedDebitInitiatingPaymentMethodDetailsBillingDetails>
     {
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public Address Address { get; set; }
 
         /// <summary>
         /// Email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// Full name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/ReceivedDebits/ReceivedDebitInitiatingPaymentMethodDetailsFinancialAccount.cs b/src/Stripe.net/Entities/Treasury/ReceivedDebits/ReceivedDebitInitiatingPaymentMethodDetailsFinancialAccount.cs
index 5e8c6835ba..03e37f27a5 100644
--- a/src/Stripe.net/Entities/Treasury/ReceivedDebits/ReceivedDebitInitiatingPaymentMethodDetailsFinancialAccount.cs
+++ b/src/Stripe.net/Entities/Treasury/ReceivedDebits/ReceivedDebitInitiatingPaymentMethodDetailsFinancialAccount.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReceivedDebitInitiatingPaymentMethodDetailsFinancialAccount : StripeEntity<ReceivedDebitInitiatingPaymentMethodDetailsFinancialAccount>, IHasId
     {
@@ -9,6 +12,9 @@ public class ReceivedDebitInitiatingPaymentMethodDetailsFinancialAccount : Strip
         /// The FinancialAccount ID.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class ReceivedDebitInitiatingPaymentMethodDetailsFinancialAccount : Strip
         /// <c>stripe</c>.
         /// </summary>
         [JsonProperty("network")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network")]
+#endif
         public string Network { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/ReceivedDebits/ReceivedDebitInitiatingPaymentMethodDetailsUsBankAccount.cs b/src/Stripe.net/Entities/Treasury/ReceivedDebits/ReceivedDebitInitiatingPaymentMethodDetailsUsBankAccount.cs
index 263a7fbc66..2b4f65b135 100644
--- a/src/Stripe.net/Entities/Treasury/ReceivedDebits/ReceivedDebitInitiatingPaymentMethodDetailsUsBankAccount.cs
+++ b/src/Stripe.net/Entities/Treasury/ReceivedDebits/ReceivedDebitInitiatingPaymentMethodDetailsUsBankAccount.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReceivedDebitInitiatingPaymentMethodDetailsUsBankAccount : StripeEntity<ReceivedDebitInitiatingPaymentMethodDetailsUsBankAccount>
     {
@@ -9,18 +12,27 @@ public class ReceivedDebitInitiatingPaymentMethodDetailsUsBankAccount : StripeEn
         /// Bank name.
         /// </summary>
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         /// <summary>
         /// The last four digits of the bank account number.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         /// <summary>
         /// The routing number for the bank account.
         /// </summary>
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/ReceivedDebits/ReceivedDebitLinkedFlows.cs b/src/Stripe.net/Entities/Treasury/ReceivedDebits/ReceivedDebitLinkedFlows.cs
index fc37bc1fb1..075e688efa 100644
--- a/src/Stripe.net/Entities/Treasury/ReceivedDebits/ReceivedDebitLinkedFlows.cs
+++ b/src/Stripe.net/Entities/Treasury/ReceivedDebits/ReceivedDebitLinkedFlows.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReceivedDebitLinkedFlows : StripeEntity<ReceivedDebitLinkedFlows>
     {
@@ -9,12 +12,18 @@ public class ReceivedDebitLinkedFlows : StripeEntity<ReceivedDebitLinkedFlows>
         /// The DebitReversal created as a result of this ReceivedDebit being reversed.
         /// </summary>
         [JsonProperty("debit_reversal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("debit_reversal")]
+#endif
         public string DebitReversal { get; set; }
 
         /// <summary>
         /// Set if the ReceivedDebit is associated with an InboundTransfer's return of funds.
         /// </summary>
         [JsonProperty("inbound_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("inbound_transfer")]
+#endif
         public string InboundTransfer { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ReceivedDebitLinkedFlows : StripeEntity<ReceivedDebitLinkedFlows>
         /// object.
         /// </summary>
         [JsonProperty("issuing_authorization")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuing_authorization")]
+#endif
         public string IssuingAuthorization { get; set; }
 
         /// <summary>
@@ -30,6 +42,9 @@ public class ReceivedDebitLinkedFlows : StripeEntity<ReceivedDebitLinkedFlows>
         /// href="https://stripe.com/docs/api#issuing_disputes">Issuing Dispute</a> object.
         /// </summary>
         [JsonProperty("issuing_transaction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuing_transaction")]
+#endif
         public string IssuingTransaction { get; set; }
 
         /// <summary>
@@ -37,6 +52,9 @@ public class ReceivedDebitLinkedFlows : StripeEntity<ReceivedDebitLinkedFlows>
         /// href="https://stripe.com/docs/api#payouts">Payout</a> object.
         /// </summary>
         [JsonProperty("payout")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payout")]
+#endif
         public string Payout { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/ReceivedDebits/ReceivedDebitReversalDetails.cs b/src/Stripe.net/Entities/Treasury/ReceivedDebits/ReceivedDebitReversalDetails.cs
index 5099b3f573..16a77f3929 100644
--- a/src/Stripe.net/Entities/Treasury/ReceivedDebits/ReceivedDebitReversalDetails.cs
+++ b/src/Stripe.net/Entities/Treasury/ReceivedDebits/ReceivedDebitReversalDetails.cs
@@ -4,6 +4,9 @@ namespace Stripe.Treasury
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReceivedDebitReversalDetails : StripeEntity<ReceivedDebitReversalDetails>
     {
@@ -12,6 +15,10 @@ public class ReceivedDebitReversalDetails : StripeEntity<ReceivedDebitReversalDe
         /// </summary>
         [JsonProperty("deadline")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deadline")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? Deadline { get; set; }
 
         /// <summary>
@@ -20,6 +27,9 @@ public class ReceivedDebitReversalDetails : StripeEntity<ReceivedDebitReversalDe
         /// <c>other</c>, or <c>source_flow_restricted</c>.
         /// </summary>
         [JsonProperty("restricted_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("restricted_reason")]
+#endif
         public string RestrictedReason { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/TransactionEntries/TransactionEntry.cs b/src/Stripe.net/Entities/Treasury/TransactionEntries/TransactionEntry.cs
index 0021f82eac..d2f188eab2 100644
--- a/src/Stripe.net/Entities/Treasury/TransactionEntries/TransactionEntry.cs
+++ b/src/Stripe.net/Entities/Treasury/TransactionEntries/TransactionEntry.cs
@@ -4,29 +4,44 @@ namespace Stripe.Treasury
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// TransactionEntries represent individual units of money movements within a single <a
     /// href="https://stripe.com/docs/api#transactions">Transaction</a>.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class TransactionEntry : StripeEntity<TransactionEntry>, IHasId, IHasObject
     {
         /// <summary>
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Change to a FinancialAccount's balance.
         /// </summary>
         [JsonProperty("balance_impact")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("balance_impact")]
+#endif
         public TransactionEntryBalanceImpact BalanceImpact { get; set; }
 
         /// <summary>
@@ -34,6 +49,10 @@ public class TransactionEntry : StripeEntity<TransactionEntry>, IHasId, IHasObje
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -42,6 +61,9 @@ public class TransactionEntry : StripeEntity<TransactionEntry>, IHasId, IHasObje
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -49,24 +71,37 @@ public class TransactionEntry : StripeEntity<TransactionEntry>, IHasId, IHasObje
         /// </summary>
         [JsonProperty("effective_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("effective_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime EffectiveAt { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// The FinancialAccount associated with this object.
         /// </summary>
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public string FinancialAccount { get; set; }
 
         /// <summary>
         /// Token of the flow associated with the TransactionEntry.
         /// </summary>
         [JsonProperty("flow")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flow")]
+#endif
         public string Flow { get; set; }
 
         /// <summary>
         /// Details of the flow associated with the TransactionEntry.
         /// </summary>
         [JsonProperty("flow_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flow_details")]
+#endif
         public TransactionEntryFlowDetails FlowDetails { get; set; }
 
         /// <summary>
@@ -76,6 +111,9 @@ public class TransactionEntry : StripeEntity<TransactionEntry>, IHasId, IHasObje
         /// <c>outbound_transfer</c>, <c>received_credit</c>, or <c>received_debit</c>.
         /// </summary>
         [JsonProperty("flow_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flow_type")]
+#endif
         public string FlowType { get; set; }
 
         /// <summary>
@@ -83,6 +121,9 @@ public class TransactionEntry : StripeEntity<TransactionEntry>, IHasId, IHasObje
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         #region Expandable Transaction
@@ -92,6 +133,9 @@ public class TransactionEntry : StripeEntity<TransactionEntry>, IHasId, IHasObje
         /// The Transaction associated with this object.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string TransactionId
         {
             get => this.InternalTransaction?.Id;
@@ -105,6 +149,9 @@ public string TransactionId
         /// For more information, see the <a href="https://stripe.com/docs/expand">expand documentation</a>.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public Transaction Transaction
         {
             get => this.InternalTransaction?.ExpandedObject;
@@ -113,6 +160,10 @@ public Transaction Transaction
 
         [JsonProperty("transaction")]
         [JsonConverter(typeof(ExpandableFieldConverter<Transaction>))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction")]
+        [STJS.JsonConverter(typeof(STJExpandableFieldConverter<Transaction>))]
+#endif
         internal ExpandableField<Transaction> InternalTransaction { get; set; }
         #endregion
 
@@ -129,6 +180,9 @@ public Transaction Transaction
         /// <c>received_credit</c>, or <c>received_debit</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/TransactionEntries/TransactionEntryBalanceImpact.cs b/src/Stripe.net/Entities/Treasury/TransactionEntries/TransactionEntryBalanceImpact.cs
index 1147aa749e..3c97b18d33 100644
--- a/src/Stripe.net/Entities/Treasury/TransactionEntries/TransactionEntryBalanceImpact.cs
+++ b/src/Stripe.net/Entities/Treasury/TransactionEntries/TransactionEntryBalanceImpact.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionEntryBalanceImpact : StripeEntity<TransactionEntryBalanceImpact>
     {
@@ -9,6 +12,9 @@ public class TransactionEntryBalanceImpact : StripeEntity<TransactionEntryBalanc
         /// The change made to funds the user can spend right now.
         /// </summary>
         [JsonProperty("cash")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cash")]
+#endif
         public long Cash { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class TransactionEntryBalanceImpact : StripeEntity<TransactionEntryBalanc
         /// later time.
         /// </summary>
         [JsonProperty("inbound_pending")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("inbound_pending")]
+#endif
         public long InboundPending { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class TransactionEntryBalanceImpact : StripeEntity<TransactionEntryBalanc
         /// for pending outbound flows.
         /// </summary>
         [JsonProperty("outbound_pending")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("outbound_pending")]
+#endif
         public long OutboundPending { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/TransactionEntries/TransactionEntryFlowDetails.cs b/src/Stripe.net/Entities/Treasury/TransactionEntries/TransactionEntryFlowDetails.cs
index e442fdad6a..250cd5f94a 100644
--- a/src/Stripe.net/Entities/Treasury/TransactionEntries/TransactionEntryFlowDetails.cs
+++ b/src/Stripe.net/Entities/Treasury/TransactionEntries/TransactionEntryFlowDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionEntryFlowDetails : StripeEntity<TransactionEntryFlowDetails>
     {
@@ -12,6 +15,9 @@ public class TransactionEntryFlowDetails : StripeEntity<TransactionEntryFlowDeta
         /// object known as a CreditReversal.
         /// </summary>
         [JsonProperty("credit_reversal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("credit_reversal")]
+#endif
         public CreditReversal CreditReversal { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class TransactionEntryFlowDetails : StripeEntity<TransactionEntryFlowDeta
         /// known as a DebitReversal.
         /// </summary>
         [JsonProperty("debit_reversal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("debit_reversal")]
+#endif
         public DebitReversal DebitReversal { get; set; }
 
         /// <summary>
@@ -35,6 +44,9 @@ public class TransactionEntryFlowDetails : StripeEntity<TransactionEntryFlowDeta
         /// money with Treasury using InboundTransfer objects</a>.
         /// </summary>
         [JsonProperty("inbound_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("inbound_transfer")]
+#endif
         public InboundTransfer InboundTransfer { get; set; }
 
         /// <summary>
@@ -47,6 +59,9 @@ public class TransactionEntryFlowDetails : StripeEntity<TransactionEntryFlowDeta
         /// card authorizations</a>.
         /// </summary>
         [JsonProperty("issuing_authorization")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuing_authorization")]
+#endif
         public Issuing.Authorization IssuingAuthorization { get; set; }
 
         /// <summary>
@@ -66,6 +81,9 @@ public class TransactionEntryFlowDetails : StripeEntity<TransactionEntryFlowDeta
         /// money with Treasury using OutboundPayment objects</a>.
         /// </summary>
         [JsonProperty("outbound_payment")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("outbound_payment")]
+#endif
         public OutboundPayment OutboundPayment { get; set; }
 
         /// <summary>
@@ -87,6 +105,9 @@ public class TransactionEntryFlowDetails : StripeEntity<TransactionEntryFlowDeta
         /// money with Treasury using OutboundTransfer objects</a>.
         /// </summary>
         [JsonProperty("outbound_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("outbound_transfer")]
+#endif
         public OutboundTransfer OutboundTransfer { get; set; }
 
         /// <summary>
@@ -95,6 +116,9 @@ public class TransactionEntryFlowDetails : StripeEntity<TransactionEntryFlowDeta
         /// via ACH or wire). These money movements are not initiated from the FinancialAccount.
         /// </summary>
         [JsonProperty("received_credit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("received_credit")]
+#endif
         public ReceivedCredit ReceivedCredit { get; set; }
 
         /// <summary>
@@ -103,6 +127,9 @@ public class TransactionEntryFlowDetails : StripeEntity<TransactionEntryFlowDeta
         /// not initiated from the FinancialAccount.
         /// </summary>
         [JsonProperty("received_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("received_debit")]
+#endif
         public ReceivedDebit ReceivedDebit { get; set; }
 
         /// <summary>
@@ -113,6 +140,9 @@ public class TransactionEntryFlowDetails : StripeEntity<TransactionEntryFlowDeta
         /// <c>outbound_transfer</c>, <c>received_credit</c>, or <c>received_debit</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/Transactions/Transaction.cs b/src/Stripe.net/Entities/Treasury/Transactions/Transaction.cs
index b6e2243993..0b8e766eb4 100644
--- a/src/Stripe.net/Entities/Treasury/Transactions/Transaction.cs
+++ b/src/Stripe.net/Entities/Treasury/Transactions/Transaction.cs
@@ -4,6 +4,9 @@ namespace Stripe.Treasury
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Transactions represent changes to a <a
@@ -15,24 +18,36 @@ public class Transaction : StripeEntity<Transaction>, IHasId, IHasObject
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Amount (in cents) transferred.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long Amount { get; set; }
 
         /// <summary>
         /// Change to a FinancialAccount's balance.
         /// </summary>
         [JsonProperty("balance_impact")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("balance_impact")]
+#endif
         public TransactionBalanceImpact BalanceImpact { get; set; }
 
         /// <summary>
@@ -40,6 +55,10 @@ public class Transaction : StripeEntity<Transaction>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -48,12 +67,18 @@ public class Transaction : StripeEntity<Transaction>, IHasId, IHasObject
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -61,24 +86,36 @@ public class Transaction : StripeEntity<Transaction>, IHasId, IHasObject
         /// in any list endpoints.
         /// </summary>
         [JsonProperty("entries")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("entries")]
+#endif
         public StripeList<TransactionEntry> Entries { get; set; }
 
         /// <summary>
         /// The FinancialAccount associated with this object.
         /// </summary>
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public string FinancialAccount { get; set; }
 
         /// <summary>
         /// ID of the flow that created the Transaction.
         /// </summary>
         [JsonProperty("flow")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flow")]
+#endif
         public string Flow { get; set; }
 
         /// <summary>
         /// Details of the flow that created the Transaction.
         /// </summary>
         [JsonProperty("flow_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flow_details")]
+#endif
         public TransactionFlowDetails FlowDetails { get; set; }
 
         /// <summary>
@@ -88,6 +125,9 @@ public class Transaction : StripeEntity<Transaction>, IHasId, IHasObject
         /// <c>outbound_transfer</c>, <c>received_credit</c>, or <c>received_debit</c>.
         /// </summary>
         [JsonProperty("flow_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flow_type")]
+#endif
         public string FlowType { get; set; }
 
         /// <summary>
@@ -95,6 +135,9 @@ public class Transaction : StripeEntity<Transaction>, IHasId, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -102,9 +145,15 @@ public class Transaction : StripeEntity<Transaction>, IHasId, IHasObject
         /// One of: <c>open</c>, <c>posted</c>, or <c>void</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         [JsonProperty("status_transitions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_transitions")]
+#endif
         public TransactionStatusTransitions StatusTransitions { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/Transactions/TransactionBalanceImpact.cs b/src/Stripe.net/Entities/Treasury/Transactions/TransactionBalanceImpact.cs
index 3659e6cac0..418471a0f8 100644
--- a/src/Stripe.net/Entities/Treasury/Transactions/TransactionBalanceImpact.cs
+++ b/src/Stripe.net/Entities/Treasury/Transactions/TransactionBalanceImpact.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionBalanceImpact : StripeEntity<TransactionBalanceImpact>
     {
@@ -9,6 +12,9 @@ public class TransactionBalanceImpact : StripeEntity<TransactionBalanceImpact>
         /// The change made to funds the user can spend right now.
         /// </summary>
         [JsonProperty("cash")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cash")]
+#endif
         public long Cash { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class TransactionBalanceImpact : StripeEntity<TransactionBalanceImpact>
         /// later time.
         /// </summary>
         [JsonProperty("inbound_pending")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("inbound_pending")]
+#endif
         public long InboundPending { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class TransactionBalanceImpact : StripeEntity<TransactionBalanceImpact>
         /// for pending outbound flows.
         /// </summary>
         [JsonProperty("outbound_pending")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("outbound_pending")]
+#endif
         public long OutboundPending { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/Transactions/TransactionFlowDetails.cs b/src/Stripe.net/Entities/Treasury/Transactions/TransactionFlowDetails.cs
index 6041c5252f..1cec6a2892 100644
--- a/src/Stripe.net/Entities/Treasury/Transactions/TransactionFlowDetails.cs
+++ b/src/Stripe.net/Entities/Treasury/Transactions/TransactionFlowDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionFlowDetails : StripeEntity<TransactionFlowDetails>
     {
@@ -12,6 +15,9 @@ public class TransactionFlowDetails : StripeEntity<TransactionFlowDetails>
         /// object known as a CreditReversal.
         /// </summary>
         [JsonProperty("credit_reversal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("credit_reversal")]
+#endif
         public CreditReversal CreditReversal { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class TransactionFlowDetails : StripeEntity<TransactionFlowDetails>
         /// known as a DebitReversal.
         /// </summary>
         [JsonProperty("debit_reversal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("debit_reversal")]
+#endif
         public DebitReversal DebitReversal { get; set; }
 
         /// <summary>
@@ -35,6 +44,9 @@ public class TransactionFlowDetails : StripeEntity<TransactionFlowDetails>
         /// money with Treasury using InboundTransfer objects</a>.
         /// </summary>
         [JsonProperty("inbound_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("inbound_transfer")]
+#endif
         public InboundTransfer InboundTransfer { get; set; }
 
         /// <summary>
@@ -47,6 +59,9 @@ public class TransactionFlowDetails : StripeEntity<TransactionFlowDetails>
         /// card authorizations</a>.
         /// </summary>
         [JsonProperty("issuing_authorization")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuing_authorization")]
+#endif
         public Issuing.Authorization IssuingAuthorization { get; set; }
 
         /// <summary>
@@ -66,6 +81,9 @@ public class TransactionFlowDetails : StripeEntity<TransactionFlowDetails>
         /// money with Treasury using OutboundPayment objects</a>.
         /// </summary>
         [JsonProperty("outbound_payment")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("outbound_payment")]
+#endif
         public OutboundPayment OutboundPayment { get; set; }
 
         /// <summary>
@@ -87,6 +105,9 @@ public class TransactionFlowDetails : StripeEntity<TransactionFlowDetails>
         /// money with Treasury using OutboundTransfer objects</a>.
         /// </summary>
         [JsonProperty("outbound_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("outbound_transfer")]
+#endif
         public OutboundTransfer OutboundTransfer { get; set; }
 
         /// <summary>
@@ -95,6 +116,9 @@ public class TransactionFlowDetails : StripeEntity<TransactionFlowDetails>
         /// via ACH or wire). These money movements are not initiated from the FinancialAccount.
         /// </summary>
         [JsonProperty("received_credit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("received_credit")]
+#endif
         public ReceivedCredit ReceivedCredit { get; set; }
 
         /// <summary>
@@ -103,6 +127,9 @@ public class TransactionFlowDetails : StripeEntity<TransactionFlowDetails>
         /// not initiated from the FinancialAccount.
         /// </summary>
         [JsonProperty("received_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("received_debit")]
+#endif
         public ReceivedDebit ReceivedDebit { get; set; }
 
         /// <summary>
@@ -113,6 +140,9 @@ public class TransactionFlowDetails : StripeEntity<TransactionFlowDetails>
         /// <c>outbound_transfer</c>, <c>received_credit</c>, or <c>received_debit</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/Treasury/Transactions/TransactionStatusTransitions.cs b/src/Stripe.net/Entities/Treasury/Transactions/TransactionStatusTransitions.cs
index e11b508215..638dc64e94 100644
--- a/src/Stripe.net/Entities/Treasury/Transactions/TransactionStatusTransitions.cs
+++ b/src/Stripe.net/Entities/Treasury/Transactions/TransactionStatusTransitions.cs
@@ -4,6 +4,9 @@ namespace Stripe.Treasury
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionStatusTransitions : StripeEntity<TransactionStatusTransitions>
     {
@@ -12,6 +15,10 @@ public class TransactionStatusTransitions : StripeEntity<TransactionStatusTransi
         /// </summary>
         [JsonProperty("posted_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("posted_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? PostedAt { get; set; }
 
         /// <summary>
@@ -19,6 +26,10 @@ public class TransactionStatusTransitions : StripeEntity<TransactionStatusTransi
         /// </summary>
         [JsonProperty("void_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("void_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? VoidAt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/UsageRecordSummaries/UsageRecordSummary.cs b/src/Stripe.net/Entities/UsageRecordSummaries/UsageRecordSummary.cs
index aa3465e3ae..3fc12372b3 100644
--- a/src/Stripe.net/Entities/UsageRecordSummaries/UsageRecordSummary.cs
+++ b/src/Stripe.net/Entities/UsageRecordSummaries/UsageRecordSummary.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// A usage record summary represents an aggregated view of how much usage was accrued for a
@@ -13,18 +16,27 @@ public class UsageRecordSummary : StripeEntity<UsageRecordSummary>, IHasId, IHas
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// The invoice in which this usage period has been billed for.
         /// </summary>
         [JsonProperty("invoice")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice")]
+#endif
         public string Invoice { get; set; }
 
         /// <summary>
@@ -32,21 +44,33 @@ public class UsageRecordSummary : StripeEntity<UsageRecordSummary>, IHasId, IHas
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         [JsonProperty("period")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("period")]
+#endif
         public UsageRecordSummaryPeriod Period { get; set; }
 
         /// <summary>
         /// The ID of the subscription item this summary is describing.
         /// </summary>
         [JsonProperty("subscription_item")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_item")]
+#endif
         public string SubscriptionItem { get; set; }
 
         /// <summary>
         /// The total usage within this usage period.
         /// </summary>
         [JsonProperty("total_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("total_usage")]
+#endif
         public long TotalUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/UsageRecordSummaries/UsageRecordSummaryPeriod.cs b/src/Stripe.net/Entities/UsageRecordSummaries/UsageRecordSummaryPeriod.cs
index 85c56c2352..63bd9c42b5 100644
--- a/src/Stripe.net/Entities/UsageRecordSummaries/UsageRecordSummaryPeriod.cs
+++ b/src/Stripe.net/Entities/UsageRecordSummaries/UsageRecordSummaryPeriod.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class UsageRecordSummaryPeriod : StripeEntity<UsageRecordSummaryPeriod>
     {
@@ -13,6 +16,10 @@ public class UsageRecordSummaryPeriod : StripeEntity<UsageRecordSummaryPeriod>
         /// </summary>
         [JsonProperty("end")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? End { get; set; }
 
         /// <summary>
@@ -20,6 +27,10 @@ public class UsageRecordSummaryPeriod : StripeEntity<UsageRecordSummaryPeriod>
         /// </summary>
         [JsonProperty("start")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("start")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? Start { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/UsageRecords/UsageRecord.cs b/src/Stripe.net/Entities/UsageRecords/UsageRecord.cs
index d039a5a049..c23657a212 100644
--- a/src/Stripe.net/Entities/UsageRecords/UsageRecord.cs
+++ b/src/Stripe.net/Entities/UsageRecords/UsageRecord.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Usage records allow you to report customer usage and metrics to Stripe for metered
@@ -22,12 +25,18 @@ public class UsageRecord : StripeEntity<UsageRecord>, IHasId, IHasObject
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -35,18 +44,27 @@ public class UsageRecord : StripeEntity<UsageRecord>, IHasId, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
         /// The usage quantity for the specified date.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long Quantity { get; set; }
 
         /// <summary>
         /// The ID of the subscription item this usage record contains data for.
         /// </summary>
         [JsonProperty("subscription_item")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_item")]
+#endif
         public string SubscriptionItem { get; set; }
 
         /// <summary>
@@ -54,6 +72,10 @@ public class UsageRecord : StripeEntity<UsageRecord>, IHasId, IHasObject
         /// </summary>
         [JsonProperty("timestamp")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("timestamp")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Timestamp { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
     }
 }
diff --git a/src/Stripe.net/Entities/V2/Billing/MeterEventAdjustments/MeterEventAdjustment.cs b/src/Stripe.net/Entities/V2/Billing/MeterEventAdjustments/MeterEventAdjustment.cs
index 47e4df60eb..8b5037d4fc 100644
--- a/src/Stripe.net/Entities/V2/Billing/MeterEventAdjustments/MeterEventAdjustment.cs
+++ b/src/Stripe.net/Entities/V2/Billing/MeterEventAdjustments/MeterEventAdjustment.cs
@@ -3,6 +3,9 @@ namespace Stripe.V2.Billing
 {
     using System;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MeterEventAdjustment : StripeEntity<MeterEventAdjustment>, IHasId, IHasObject
     {
@@ -10,6 +13,9 @@ public class MeterEventAdjustment : StripeEntity<MeterEventAdjustment>, IHasId,
         /// The unique id of this meter event adjustment.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
@@ -17,24 +23,36 @@ public class MeterEventAdjustment : StripeEntity<MeterEventAdjustment>, IHasId,
         /// the object field.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Specifies which event to cancel.
         /// </summary>
         [JsonProperty("cancel")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancel")]
+#endif
         public MeterEventAdjustmentCancel Cancel { get; set; }
 
         /// <summary>
         /// The time the adjustment was created.
         /// </summary>
         [JsonProperty("created")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// The name of the meter event. Corresponds with the <c>event_name</c> field on a meter.
         /// </summary>
         [JsonProperty("event_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("event_name")]
+#endif
         public string EventName { get; set; }
 
         /// <summary>
@@ -42,6 +60,9 @@ public class MeterEventAdjustment : StripeEntity<MeterEventAdjustment>, IHasId,
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -49,6 +70,9 @@ public class MeterEventAdjustment : StripeEntity<MeterEventAdjustment>, IHasId,
         /// One of: <c>complete</c>, or <c>pending</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -56,6 +80,9 @@ public class MeterEventAdjustment : StripeEntity<MeterEventAdjustment>, IHasId,
         /// period. Time period cancellation is not supported yet.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/V2/Billing/MeterEventAdjustments/MeterEventAdjustmentCancel.cs b/src/Stripe.net/Entities/V2/Billing/MeterEventAdjustments/MeterEventAdjustmentCancel.cs
index 1dc0d7d2f7..b4a92e6204 100644
--- a/src/Stripe.net/Entities/V2/Billing/MeterEventAdjustments/MeterEventAdjustmentCancel.cs
+++ b/src/Stripe.net/Entities/V2/Billing/MeterEventAdjustments/MeterEventAdjustmentCancel.cs
@@ -2,6 +2,9 @@
 namespace Stripe.V2.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MeterEventAdjustmentCancel : StripeEntity<MeterEventAdjustmentCancel>
     {
@@ -10,6 +13,9 @@ public class MeterEventAdjustmentCancel : StripeEntity<MeterEventAdjustmentCance
         /// receiving them.
         /// </summary>
         [JsonProperty("identifier")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("identifier")]
+#endif
         public string Identifier { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/V2/Billing/MeterEventSessions/MeterEventSession.cs b/src/Stripe.net/Entities/V2/Billing/MeterEventSessions/MeterEventSession.cs
index 04a074a544..f12f3d8d27 100644
--- a/src/Stripe.net/Entities/V2/Billing/MeterEventSessions/MeterEventSession.cs
+++ b/src/Stripe.net/Entities/V2/Billing/MeterEventSessions/MeterEventSession.cs
@@ -3,6 +3,9 @@ namespace Stripe.V2.Billing
 {
     using System;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MeterEventSession : StripeEntity<MeterEventSession>, IHasId, IHasObject
     {
@@ -10,6 +13,9 @@ public class MeterEventSession : StripeEntity<MeterEventSession>, IHasId, IHasOb
         /// The unique id of this auth session.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class MeterEventSession : StripeEntity<MeterEventSession>, IHasId, IHasOb
         /// the object field.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
@@ -24,18 +33,27 @@ public class MeterEventSession : StripeEntity<MeterEventSession>, IHasId, IHasOb
         /// high-throughput meter event API.
         /// </summary>
         [JsonProperty("authentication_token")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("authentication_token")]
+#endif
         public string AuthenticationToken { get; set; }
 
         /// <summary>
         /// The creation time of this session.
         /// </summary>
         [JsonProperty("created")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// The time at which this session will expire.
         /// </summary>
         [JsonProperty("expires_at")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+#endif
         public DateTime ExpiresAt { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -43,6 +61,9 @@ public class MeterEventSession : StripeEntity<MeterEventSession>, IHasId, IHasOb
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/V2/Billing/MeterEvents/MeterEvent.cs b/src/Stripe.net/Entities/V2/Billing/MeterEvents/MeterEvent.cs
index cc8ee0f028..df61bde2da 100644
--- a/src/Stripe.net/Entities/V2/Billing/MeterEvents/MeterEvent.cs
+++ b/src/Stripe.net/Entities/V2/Billing/MeterEvents/MeterEvent.cs
@@ -4,6 +4,9 @@ namespace Stripe.V2.Billing
     using System;
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Fix me empty_doc_string.
@@ -15,18 +18,27 @@ public class MeterEvent : StripeEntity<MeterEvent>, IHasObject
         /// the object field.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// The creation time of this meter event.
         /// </summary>
         [JsonProperty("created")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// The name of the meter event. Corresponds with the <c>event_name</c> field on a meter.
         /// </summary>
         [JsonProperty("event_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("event_name")]
+#endif
         public string EventName { get; set; }
 
         /// <summary>
@@ -35,6 +47,9 @@ public class MeterEvent : StripeEntity<MeterEvent>, IHasObject
         /// 24 hour period.
         /// </summary>
         [JsonProperty("identifier")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("identifier")]
+#endif
         public string Identifier { get; set; }
 
         /// <summary>
@@ -42,6 +57,9 @@ public class MeterEvent : StripeEntity<MeterEvent>, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -51,6 +69,9 @@ public class MeterEvent : StripeEntity<MeterEvent>, IHasObject
         /// payload.
         /// </summary>
         [JsonProperty("payload")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payload")]
+#endif
         public Dictionary<string, string> Payload { get; set; }
 
         /// <summary>
@@ -58,6 +79,9 @@ public class MeterEvent : StripeEntity<MeterEvent>, IHasObject
         /// the future. Defaults to current timestamp if not specified.
         /// </summary>
         [JsonProperty("timestamp")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("timestamp")]
+#endif
         public DateTime Timestamp { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
     }
 }
diff --git a/src/Stripe.net/Entities/V2/EventDestinations/EventDestination.cs b/src/Stripe.net/Entities/V2/EventDestinations/EventDestination.cs
index 7228fc017d..95d60b03f9 100644
--- a/src/Stripe.net/Entities/V2/EventDestinations/EventDestination.cs
+++ b/src/Stripe.net/Entities/V2/EventDestinations/EventDestination.cs
@@ -4,6 +4,9 @@ namespace Stripe.V2
     using System;
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Set up an event destination to receive events from Stripe across multiple destination
@@ -19,6 +22,9 @@ public class EventDestination : StripeEntity<EventDestination>, IHasId, IHasMeta
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
@@ -26,30 +32,45 @@ public class EventDestination : StripeEntity<EventDestination>, IHasId, IHasMeta
         /// the object field.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Amazon EventBridge configuration.
         /// </summary>
         [JsonProperty("amazon_eventbridge")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amazon_eventbridge")]
+#endif
         public EventDestinationAmazonEventbridge AmazonEventbridge { get; set; }
 
         /// <summary>
         /// Time at which the object was created.
         /// </summary>
         [JsonProperty("created")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// An optional description of what the event destination is used for.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// The list of events to enable for this endpoint.
         /// </summary>
         [JsonProperty("enabled_events")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled_events")]
+#endif
         public List<string> EnabledEvents { get; set; }
 
         /// <summary>
@@ -57,6 +78,9 @@ public class EventDestination : StripeEntity<EventDestination>, IHasId, IHasMeta
         /// One of: <c>snapshot</c>, or <c>thin</c>.
         /// </summary>
         [JsonProperty("event_payload")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("event_payload")]
+#endif
         public string EventPayload { get; set; }
 
         /// <summary>
@@ -64,6 +88,9 @@ public class EventDestination : StripeEntity<EventDestination>, IHasId, IHasMeta
         /// One of: <c>other_accounts</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("events_from")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("events_from")]
+#endif
         public List<string> EventsFrom { get; set; }
 
         /// <summary>
@@ -71,24 +98,36 @@ public class EventDestination : StripeEntity<EventDestination>, IHasId, IHasMeta
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
         /// Metadata.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Event destination name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// If using the snapshot event payload, the API version events are rendered as.
         /// </summary>
         [JsonProperty("snapshot_api_version")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("snapshot_api_version")]
+#endif
         public string SnapshotApiVersion { get; set; }
 
         /// <summary>
@@ -96,12 +135,18 @@ public class EventDestination : StripeEntity<EventDestination>, IHasId, IHasMeta
         /// One of: <c>disabled</c>, or <c>enabled</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
         /// Additional information about event destination status.
         /// </summary>
         [JsonProperty("status_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_details")]
+#endif
         public EventDestinationStatusDetails StatusDetails { get; set; }
 
         /// <summary>
@@ -109,18 +154,27 @@ public class EventDestination : StripeEntity<EventDestination>, IHasId, IHasMeta
         /// One of: <c>amazon_eventbridge</c>, or <c>webhook_endpoint</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
         /// Time at which the object was last updated.
         /// </summary>
         [JsonProperty("updated")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("updated")]
+#endif
         public DateTime Updated { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// Webhook endpoint configuration.
         /// </summary>
         [JsonProperty("webhook_endpoint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("webhook_endpoint")]
+#endif
         public EventDestinationWebhookEndpoint WebhookEndpoint { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/V2/EventDestinations/EventDestinationAmazonEventbridge.cs b/src/Stripe.net/Entities/V2/EventDestinations/EventDestinationAmazonEventbridge.cs
index 0c2c9435df..7cb8c95369 100644
--- a/src/Stripe.net/Entities/V2/EventDestinations/EventDestinationAmazonEventbridge.cs
+++ b/src/Stripe.net/Entities/V2/EventDestinations/EventDestinationAmazonEventbridge.cs
@@ -2,6 +2,9 @@
 namespace Stripe.V2
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class EventDestinationAmazonEventbridge : StripeEntity<EventDestinationAmazonEventbridge>
     {
@@ -9,12 +12,18 @@ public class EventDestinationAmazonEventbridge : StripeEntity<EventDestinationAm
         /// The AWS account ID.
         /// </summary>
         [JsonProperty("aws_account_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("aws_account_id")]
+#endif
         public string AwsAccountId { get; set; }
 
         /// <summary>
         /// The ARN of the AWS event source.
         /// </summary>
         [JsonProperty("aws_event_source_arn")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("aws_event_source_arn")]
+#endif
         public string AwsEventSourceArn { get; set; }
 
         /// <summary>
@@ -22,6 +31,9 @@ public class EventDestinationAmazonEventbridge : StripeEntity<EventDestinationAm
         /// One of: <c>active</c>, <c>deleted</c>, <c>pending</c>, or <c>unknown</c>.
         /// </summary>
         [JsonProperty("aws_event_source_status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("aws_event_source_status")]
+#endif
         public string AwsEventSourceStatus { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/V2/EventDestinations/EventDestinationStatusDetails.cs b/src/Stripe.net/Entities/V2/EventDestinations/EventDestinationStatusDetails.cs
index 683ee719d6..6b5e5793ea 100644
--- a/src/Stripe.net/Entities/V2/EventDestinations/EventDestinationStatusDetails.cs
+++ b/src/Stripe.net/Entities/V2/EventDestinations/EventDestinationStatusDetails.cs
@@ -2,6 +2,9 @@
 namespace Stripe.V2
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class EventDestinationStatusDetails : StripeEntity<EventDestinationStatusDetails>
     {
@@ -9,6 +12,9 @@ public class EventDestinationStatusDetails : StripeEntity<EventDestinationStatus
         /// Details about why the event destination has been disabled.
         /// </summary>
         [JsonProperty("disabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("disabled")]
+#endif
         public EventDestinationStatusDetailsDisabled Disabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/V2/EventDestinations/EventDestinationStatusDetailsDisabled.cs b/src/Stripe.net/Entities/V2/EventDestinations/EventDestinationStatusDetailsDisabled.cs
index 8a9380f5ac..ef2456a2b4 100644
--- a/src/Stripe.net/Entities/V2/EventDestinations/EventDestinationStatusDetailsDisabled.cs
+++ b/src/Stripe.net/Entities/V2/EventDestinations/EventDestinationStatusDetailsDisabled.cs
@@ -2,6 +2,9 @@
 namespace Stripe.V2
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class EventDestinationStatusDetailsDisabled : StripeEntity<EventDestinationStatusDetailsDisabled>
     {
@@ -10,6 +13,9 @@ public class EventDestinationStatusDetailsDisabled : StripeEntity<EventDestinati
         /// One of: <c>no_aws_event_source_exists</c>, or <c>user</c>.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/V2/EventDestinations/EventDestinationWebhookEndpoint.cs b/src/Stripe.net/Entities/V2/EventDestinations/EventDestinationWebhookEndpoint.cs
index 8c9d6f1200..f58033edf5 100644
--- a/src/Stripe.net/Entities/V2/EventDestinations/EventDestinationWebhookEndpoint.cs
+++ b/src/Stripe.net/Entities/V2/EventDestinations/EventDestinationWebhookEndpoint.cs
@@ -2,6 +2,9 @@
 namespace Stripe.V2
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class EventDestinationWebhookEndpoint : StripeEntity<EventDestinationWebhookEndpoint>
     {
@@ -9,12 +12,18 @@ public class EventDestinationWebhookEndpoint : StripeEntity<EventDestinationWebh
         /// The signing secret of the webhook endpoint, only includable on creation.
         /// </summary>
         [JsonProperty("signing_secret")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("signing_secret")]
+#endif
         public string SigningSecret { get; set; }
 
         /// <summary>
         /// The URL of the webhook endpoint, includable.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/V2/Events/Event.cs b/src/Stripe.net/Entities/V2/Events/Event.cs
index 38afede2bd..713f7ef2cf 100644
--- a/src/Stripe.net/Entities/V2/Events/Event.cs
+++ b/src/Stripe.net/Entities/V2/Events/Event.cs
@@ -3,6 +3,9 @@ namespace Stripe.V2
 {
     using System;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Code generated portion of Thin Event.
@@ -13,6 +16,9 @@ public partial class Event : StripeEntity<Event>, IHasId, IHasObject
         /// Unique identifier for the event.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
@@ -20,18 +26,27 @@ public partial class Event : StripeEntity<Event>, IHasId, IHasObject
         /// the object field.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// Authentication context needed to fetch the event or related object.
         /// </summary>
         [JsonProperty("context")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("context")]
+#endif
         public string Context { get; set; }
 
         /// <summary>
         /// Time at which the object was created.
         /// </summary>
         [JsonProperty("created")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
@@ -39,18 +54,27 @@ public partial class Event : StripeEntity<Event>, IHasId, IHasObject
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
         /// Reason for the event.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public EventReason Reason { get; set; }
 
         /// <summary>
         /// The type of the event.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/V2/Events/Event.partial.cs b/src/Stripe.net/Entities/V2/Events/Event.partial.cs
index d397a8fa72..1f56c25ae6 100644
--- a/src/Stripe.net/Entities/V2/Events/Event.partial.cs
+++ b/src/Stripe.net/Entities/V2/Events/Event.partial.cs
@@ -5,18 +5,29 @@ namespace Stripe.V2
     using System.Threading;
     using System.Threading.Tasks;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
+
     using Stripe.Infrastructure;
 
     /// <summary>
     /// Manually-maintained convenience methods added to ThinEvent.
     /// </summary>
     [JsonConverter(typeof(V2EventConverter))]
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJV2EventConverter))]
+#endif
     public partial class Event : StripeEntity<Event>, IHasId, IHasObject
     {
         /// <summary>
         /// Used for .FetchObject and .FetchData helpers.
         /// </summary>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
+
         internal ApiRequestor Requestor { get; set; }
 
         /// <summary>
diff --git a/src/Stripe.net/Entities/V2/Events/EventReason.cs b/src/Stripe.net/Entities/V2/Events/EventReason.cs
index 685a03f932..2db0006cad 100644
--- a/src/Stripe.net/Entities/V2/Events/EventReason.cs
+++ b/src/Stripe.net/Entities/V2/Events/EventReason.cs
@@ -2,6 +2,9 @@
 namespace Stripe.V2
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class EventReason : StripeEntity<EventReason>
     {
@@ -9,12 +12,18 @@ public class EventReason : StripeEntity<EventReason>
         /// Event reason type.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
         /// Information on the API request that instigated the event.
         /// </summary>
         [JsonProperty("request")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request")]
+#endif
         public EventReasonRequest Request { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/V2/Events/EventReasonRequest.cs b/src/Stripe.net/Entities/V2/Events/EventReasonRequest.cs
index 9f42d72af3..373500ee68 100644
--- a/src/Stripe.net/Entities/V2/Events/EventReasonRequest.cs
+++ b/src/Stripe.net/Entities/V2/Events/EventReasonRequest.cs
@@ -2,6 +2,9 @@
 namespace Stripe.V2
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class EventReasonRequest : StripeEntity<EventReasonRequest>, IHasId
     {
@@ -9,12 +12,18 @@ public class EventReasonRequest : StripeEntity<EventReasonRequest>, IHasId
         /// ID of the API request that caused the event.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// The idempotency key transmitted during the request.
         /// </summary>
         [JsonProperty("idempotency_key")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("idempotency_key")]
+#endif
         public string IdempotencyKey { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/V2/Events/EventRelatedObject.cs b/src/Stripe.net/Entities/V2/Events/EventRelatedObject.cs
index 63c9d9e253..5f880dac20 100644
--- a/src/Stripe.net/Entities/V2/Events/EventRelatedObject.cs
+++ b/src/Stripe.net/Entities/V2/Events/EventRelatedObject.cs
@@ -1,6 +1,9 @@
 namespace Stripe.V2
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class EventRelatedObject : StripeEntity<EventRelatedObject>, IHasId
     {
@@ -8,18 +11,27 @@ public class EventRelatedObject : StripeEntity<EventRelatedObject>, IHasId
         /// Unique identifier for the object relevant to the event.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// Type of the object relevant to the event.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
         /// URL to retrieve the resource.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/V2/StripeList.cs b/src/Stripe.net/Entities/V2/StripeList.cs
index 52a148803c..2d7549d370 100644
--- a/src/Stripe.net/Entities/V2/StripeList.cs
+++ b/src/Stripe.net/Entities/V2/StripeList.cs
@@ -3,26 +3,43 @@ namespace Stripe.V2
     using System.Collections;
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using Stripe.Infrastructure;
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     [JsonObject]
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJEnumerableObjectConverter))]
+#endif
     public class StripeList<T> : StripeEntity<StripeList<T>>, IEnumerable<T>
     {
         /// <summary>
         /// A list containing the actual response elements, paginated by any request parameters.
+        /// TODO(jar) does this need an ItemConverterType (like in Stripe.StripeList).
         /// </summary>
         [JsonProperty("data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("data")]
+#endif
         public List<T> Data { get; set; }
 
         /// <summary>
         /// The URL for accessing this list.
         /// </summary>
         [JsonProperty("next_page_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("next_page_url")]
+#endif
         public string NextPageUrl { get; set; }
 
         /// <summary>
         /// The URL for accessing this list.
         /// </summary>
         [JsonProperty("previous_page_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("previous_page_url")]
+#endif
         public string PreviousPageUrl { get; set; }
 
         public IEnumerator<T> GetEnumerator()
diff --git a/src/Stripe.net/Entities/WebhookEndpoints/WebhookEndpoint.cs b/src/Stripe.net/Entities/WebhookEndpoints/WebhookEndpoint.cs
index 8d4178339d..996b54b618 100644
--- a/src/Stripe.net/Entities/WebhookEndpoints/WebhookEndpoint.cs
+++ b/src/Stripe.net/Entities/WebhookEndpoints/WebhookEndpoint.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// You can configure <a href="https://docs.stripe.com/webhooks/">webhook endpoints</a> via
@@ -24,24 +27,36 @@ public class WebhookEndpoint : StripeEntity<WebhookEndpoint>, IHasId, IHasMetada
         /// Unique identifier for the object.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// String representing the object's type. Objects of the same type share the same value.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
 
         /// <summary>
         /// The API version events are rendered as for this webhook endpoint.
         /// </summary>
         [JsonProperty("api_version")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("api_version")]
+#endif
         public string ApiVersion { get; set; }
 
         /// <summary>
         /// The ID of the associated Connect application.
         /// </summary>
         [JsonProperty("application")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application")]
+#endif
         public string Application { get; set; }
 
         /// <summary>
@@ -49,18 +64,29 @@ public class WebhookEndpoint : StripeEntity<WebhookEndpoint>, IHasId, IHasMetada
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime Created { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// Whether this object is deleted or not.
         /// </summary>
         [JsonProperty("deleted", NullValueHandling = NullValueHandling.Ignore)]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+        [STJS.JsonIgnore(Condition = STJS.JsonIgnoreCondition.WhenWritingNull)]
+#endif
         public bool? Deleted { get; set; }
 
         /// <summary>
         /// An optional description of what the webhook is used for.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -68,6 +94,9 @@ public class WebhookEndpoint : StripeEntity<WebhookEndpoint>, IHasId, IHasMetada
         /// are enabled, except those that require explicit selection.
         /// </summary>
         [JsonProperty("enabled_events")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled_events")]
+#endif
         public List<string> EnabledEvents { get; set; }
 
         /// <summary>
@@ -75,6 +104,9 @@ public class WebhookEndpoint : StripeEntity<WebhookEndpoint>, IHasId, IHasMetada
         /// the object exists in test mode.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; set; }
 
         /// <summary>
@@ -83,6 +115,9 @@ public class WebhookEndpoint : StripeEntity<WebhookEndpoint>, IHasId, IHasMetada
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -91,18 +126,27 @@ public class WebhookEndpoint : StripeEntity<WebhookEndpoint>, IHasId, IHasMetada
         /// at creation.
         /// </summary>
         [JsonProperty("secret")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("secret")]
+#endif
         public string Secret { get; set; }
 
         /// <summary>
         /// The status of the webhook. It can be <c>enabled</c> or <c>disabled</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
         /// The URL of the webhook endpoint.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/_base/StripeEntity.cs b/src/Stripe.net/Entities/_base/StripeEntity.cs
index b3e7e7dd67..9a14beaed0 100644
--- a/src/Stripe.net/Entities/_base/StripeEntity.cs
+++ b/src/Stripe.net/Entities/_base/StripeEntity.cs
@@ -9,8 +9,14 @@ namespace Stripe
     using Newtonsoft.Json.Linq;
     using Stripe.Infrastructure;
 
+#if NET6_0_OR_GREATER
+    using STJ = System.Text.Json;
+    using STJS = System.Text.Json.Serialization;
+#endif
+
     [JsonObject(MemberSerialization.OptIn)]
     [JsonConverter(typeof(StripeEntityConverter))]
+    [NoSystemTextJsonAttributesNeeded("Converter is only needed for deserialization in Stripe.net.  Member serialization opt-in is implemented in STJMemberSerializationOptIn, which is placed on the concrete classes")]
     public abstract class StripeEntity : IStripeEntity
     {
         /// <summary>
@@ -22,12 +28,20 @@ public abstract class StripeEntity : IStripeEntity
         /// You should always prefer using the standard property accessors whenever possible. This
         /// accessor is not considered fully stable and might change or be removed in future
         /// versions.
+        /// This property is only available on the objects originally returned by Stripe's .NET
+        /// library. It is not available on objects deserialized from JSON in application code.
         /// </remarks>
         /// <returns>The raw <see cref="JObject">JObject</see>.</returns>
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public JObject RawJObject { get; protected set; }
 
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public StripeResponse StripeResponse { get; set; }
 
         /// <summary>
@@ -88,7 +102,11 @@ public override string ToString()
                 this.ToJson());
         }
 
-        /// <summary>Serializes the Stripe object as a JSON string.</summary>
+        /// <summary>Serializes the Stripe object's documented properties as a JSON string.</summary>
+        /// <remarks>
+        /// The returned string will not include any undocumented properties contained in
+        /// <see cref="RawJObject"/>.
+        /// </remarks>
         /// <returns>An indented JSON string represensation of the object.</returns>
         public string ToJson()
         {
diff --git a/src/Stripe.net/Entities/_common/Address.cs b/src/Stripe.net/Entities/_common/Address.cs
index b5f187f107..b0ec7e2b81 100644
--- a/src/Stripe.net/Entities/_common/Address.cs
+++ b/src/Stripe.net/Entities/_common/Address.cs
@@ -1,25 +1,46 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class Address : StripeEntity<Address>
     {
         [JsonProperty("city")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("city")]
+#endif
         public string City { get; set; }
 
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         [JsonProperty("line1")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line1")]
+#endif
         public string Line1 { get; set; }
 
         [JsonProperty("line2")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line2")]
+#endif
         public string Line2 { get; set; }
 
         [JsonProperty("postal_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("postal_code")]
+#endif
         public string PostalCode { get; set; }
 
         [JsonProperty("state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("state")]
+#endif
         public string State { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/_common/AddressJapan.cs b/src/Stripe.net/Entities/_common/AddressJapan.cs
index 12822b2500..d1515cb7e2 100644
--- a/src/Stripe.net/Entities/_common/AddressJapan.cs
+++ b/src/Stripe.net/Entities/_common/AddressJapan.cs
@@ -1,10 +1,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AddressJapan : Address
     {
         [JsonProperty("town")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("town")]
+#endif
         public string Town { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/_common/Amount.cs b/src/Stripe.net/Entities/_common/Amount.cs
index 3f624dbe92..4641e86415 100644
--- a/src/Stripe.net/Entities/_common/Amount.cs
+++ b/src/Stripe.net/Entities/_common/Amount.cs
@@ -1,13 +1,22 @@
 namespace Stripe.V2
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class Amount
     {
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public long Value { get; set; }
 
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
     }
-}
\ No newline at end of file
+}
diff --git a/src/Stripe.net/Entities/_common/Shipping.cs b/src/Stripe.net/Entities/_common/Shipping.cs
index 6d759a76fd..7bd15d42f6 100644
--- a/src/Stripe.net/Entities/_common/Shipping.cs
+++ b/src/Stripe.net/Entities/_common/Shipping.cs
@@ -1,22 +1,40 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class Shipping : StripeEntity<Shipping>
     {
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public Address Address { get; set; }
 
         [JsonProperty("carrier")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("carrier")]
+#endif
         public string Carrier { get; set; }
 
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
 
         [JsonProperty("tracking_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tracking_number")]
+#endif
         public string TrackingNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Entities/_interfaces/IBalanceTransactionSource.cs b/src/Stripe.net/Entities/_interfaces/IBalanceTransactionSource.cs
index 7dc1be596b..c3b4a5772b 100644
--- a/src/Stripe.net/Entities/_interfaces/IBalanceTransactionSource.cs
+++ b/src/Stripe.net/Entities/_interfaces/IBalanceTransactionSource.cs
@@ -1,5 +1,10 @@
 namespace Stripe
 {
+#if NET6_0_OR_GREATER
+    using Stripe.Infrastructure;
+    using STJS = System.Text.Json.Serialization;
+#endif
+
     /// <summary>
     /// Resources that implement this interface can appear as sources in balance transactions.
     /// <para>Possible concrete classes:</para>
@@ -39,6 +44,9 @@ namespace Stripe
     /// </item>
     /// </list>
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJStripeObjectConverter))]
+#endif
     public interface IBalanceTransactionSource : IStripeEntity, IHasId, IHasObject
     {
     }
diff --git a/src/Stripe.net/Entities/_interfaces/IExternalAccount.cs b/src/Stripe.net/Entities/_interfaces/IExternalAccount.cs
index 5dd8efbafd..d7c3f84ef5 100644
--- a/src/Stripe.net/Entities/_interfaces/IExternalAccount.cs
+++ b/src/Stripe.net/Entities/_interfaces/IExternalAccount.cs
@@ -1,5 +1,10 @@
 namespace Stripe
 {
+#if NET6_0_OR_GREATER
+    using Stripe.Infrastructure;
+    using STJS = System.Text.Json.Serialization;
+#endif
+
     /// <summary>
     /// Resources that implement this interface can be used as external accounts, i.e. they can
     /// be attached to a Stripe account to receive payouts.
@@ -13,6 +18,9 @@ namespace Stripe
     /// </item>
     /// </list>
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJStripeObjectConverter))]
+#endif
     public interface IExternalAccount : IStripeEntity, IHasId, IHasObject
     {
         Account Account { get; }
diff --git a/src/Stripe.net/Entities/_interfaces/IHasObject.cs b/src/Stripe.net/Entities/_interfaces/IHasObject.cs
index a7d6f5f681..b9238c60ae 100644
--- a/src/Stripe.net/Entities/_interfaces/IHasObject.cs
+++ b/src/Stripe.net/Entities/_interfaces/IHasObject.cs
@@ -1,10 +1,16 @@
 namespace Stripe
 {
-    using System.Collections.Generic;
+#if NET6_0_OR_GREATER
+    using Stripe.Infrastructure;
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Interface that identifies entities returned by Stripe that have an `object` attribute.
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJStripeObjectConverter))]
+#endif
     public interface IHasObject
     {
         /// <summary>
diff --git a/src/Stripe.net/Entities/_interfaces/IPaymentSource.cs b/src/Stripe.net/Entities/_interfaces/IPaymentSource.cs
index 31410060d5..d19362a24e 100644
--- a/src/Stripe.net/Entities/_interfaces/IPaymentSource.cs
+++ b/src/Stripe.net/Entities/_interfaces/IPaymentSource.cs
@@ -1,5 +1,10 @@
 namespace Stripe
 {
+#if NET6_0_OR_GREATER
+    using Stripe.Infrastructure;
+    using STJS = System.Text.Json.Serialization;
+#endif
+
     /// <summary>
     /// Resources that implement this interface can be used as payment sources when creating
     /// charges.
@@ -19,6 +24,9 @@ namespace Stripe
     /// </item>
     /// </list>
     /// </summary>
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJStripeObjectConverter))]
+#endif
     public interface IPaymentSource : IStripeEntity, IHasId, IHasObject
     {
     }
diff --git a/src/Stripe.net/Events/V1BillingMeterErrorReportTriggeredEvent.cs b/src/Stripe.net/Events/V1BillingMeterErrorReportTriggeredEvent.cs
index 82b6e1f933..2e7a5767ea 100644
--- a/src/Stripe.net/Events/V1BillingMeterErrorReportTriggeredEvent.cs
+++ b/src/Stripe.net/Events/V1BillingMeterErrorReportTriggeredEvent.cs
@@ -3,6 +3,9 @@ namespace Stripe.Events
 {
     using System.Threading.Tasks;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// This event occurs when there are invalid async usage events for a given meter.
@@ -13,6 +16,9 @@ public class V1BillingMeterErrorReportTriggeredEvent : V2.Event
         /// Data for the v1.billing.meter.error_report_triggered event.
         /// </summary>
         [JsonProperty("data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("data")]
+#endif
 
         public V1BillingMeterErrorReportTriggeredEventData Data { get; set; }
 
@@ -20,6 +26,9 @@ public class V1BillingMeterErrorReportTriggeredEvent : V2.Event
         /// Object containing the reference to API resource relevant to the event.
         /// </summary>
         [JsonProperty("related_object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("related_object")]
+#endif
 
         public V2.EventRelatedObject RelatedObject { get; set; }
 
diff --git a/src/Stripe.net/Events/V1BillingMeterErrorReportTriggeredEventData.cs b/src/Stripe.net/Events/V1BillingMeterErrorReportTriggeredEventData.cs
index ffa905a301..4b7dce3f3e 100644
--- a/src/Stripe.net/Events/V1BillingMeterErrorReportTriggeredEventData.cs
+++ b/src/Stripe.net/Events/V1BillingMeterErrorReportTriggeredEventData.cs
@@ -4,6 +4,9 @@ namespace Stripe.Events
     using System;
     using System.Threading.Tasks;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class V1BillingMeterErrorReportTriggeredEventData : StripeEntity<V1BillingMeterErrorReportTriggeredEventData>
     {
@@ -11,24 +14,36 @@ public class V1BillingMeterErrorReportTriggeredEventData : StripeEntity<V1Billin
         /// Extra field included in the event's <c>data</c> when fetched from /v2/events.
         /// </summary>
         [JsonProperty("developer_message_summary")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("developer_message_summary")]
+#endif
         public string DeveloperMessageSummary { get; set; }
 
         /// <summary>
         /// This contains information about why meter error happens.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public V1BillingMeterErrorReportTriggeredEventDataReason Reason { get; set; }
 
         /// <summary>
         /// The end of the window that is encapsulated by this summary.
         /// </summary>
         [JsonProperty("validation_end")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("validation_end")]
+#endif
         public DateTime ValidationEnd { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// The start of the window that is encapsulated by this summary.
         /// </summary>
         [JsonProperty("validation_start")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("validation_start")]
+#endif
         public DateTime ValidationStart { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
     }
 }
diff --git a/src/Stripe.net/Events/V1BillingMeterErrorReportTriggeredEventDataReason.cs b/src/Stripe.net/Events/V1BillingMeterErrorReportTriggeredEventDataReason.cs
index d10fc3b8ad..bd2f07cbd7 100644
--- a/src/Stripe.net/Events/V1BillingMeterErrorReportTriggeredEventDataReason.cs
+++ b/src/Stripe.net/Events/V1BillingMeterErrorReportTriggeredEventDataReason.cs
@@ -4,6 +4,9 @@ namespace Stripe.Events
     using System.Collections.Generic;
     using System.Threading.Tasks;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class V1BillingMeterErrorReportTriggeredEventDataReason : StripeEntity<V1BillingMeterErrorReportTriggeredEventDataReason>
     {
@@ -11,12 +14,18 @@ public class V1BillingMeterErrorReportTriggeredEventDataReason : StripeEntity<V1
         /// The total error count within this window.
         /// </summary>
         [JsonProperty("error_count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("error_count")]
+#endif
         public long ErrorCount { get; set; }
 
         /// <summary>
         /// The error details.
         /// </summary>
         [JsonProperty("error_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("error_types")]
+#endif
         public List<V1BillingMeterErrorReportTriggeredEventDataReasonErrorType> ErrorTypes { get; set; }
     }
 }
diff --git a/src/Stripe.net/Events/V1BillingMeterErrorReportTriggeredEventDataReasonErrorType.cs b/src/Stripe.net/Events/V1BillingMeterErrorReportTriggeredEventDataReasonErrorType.cs
index f6ff3832bc..ec0b915481 100644
--- a/src/Stripe.net/Events/V1BillingMeterErrorReportTriggeredEventDataReasonErrorType.cs
+++ b/src/Stripe.net/Events/V1BillingMeterErrorReportTriggeredEventDataReasonErrorType.cs
@@ -4,6 +4,9 @@ namespace Stripe.Events
     using System.Collections.Generic;
     using System.Threading.Tasks;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class V1BillingMeterErrorReportTriggeredEventDataReasonErrorType : StripeEntity<V1BillingMeterErrorReportTriggeredEventDataReasonErrorType>
     {
@@ -15,18 +18,27 @@ public class V1BillingMeterErrorReportTriggeredEventDataReasonErrorType : Stripe
         /// <c>no_meter</c>, <c>timestamp_in_future</c>, or <c>timestamp_too_far_in_past</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
         /// The number of errors of this type.
         /// </summary>
         [JsonProperty("error_count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("error_count")]
+#endif
         public long ErrorCount { get; set; }
 
         /// <summary>
         /// A list of sample errors of this type.
         /// </summary>
         [JsonProperty("sample_errors")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sample_errors")]
+#endif
         public List<V1BillingMeterErrorReportTriggeredEventDataReasonErrorTypeSampleError> SampleErrors { get; set; }
     }
 }
diff --git a/src/Stripe.net/Events/V1BillingMeterErrorReportTriggeredEventDataReasonErrorTypeSampleError.cs b/src/Stripe.net/Events/V1BillingMeterErrorReportTriggeredEventDataReasonErrorTypeSampleError.cs
index 0d7b25f660..97eb6bba70 100644
--- a/src/Stripe.net/Events/V1BillingMeterErrorReportTriggeredEventDataReasonErrorTypeSampleError.cs
+++ b/src/Stripe.net/Events/V1BillingMeterErrorReportTriggeredEventDataReasonErrorTypeSampleError.cs
@@ -3,6 +3,9 @@ namespace Stripe.Events
 {
     using System.Threading.Tasks;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class V1BillingMeterErrorReportTriggeredEventDataReasonErrorTypeSampleError : StripeEntity<V1BillingMeterErrorReportTriggeredEventDataReasonErrorTypeSampleError>
     {
@@ -10,12 +13,18 @@ public class V1BillingMeterErrorReportTriggeredEventDataReasonErrorTypeSampleErr
         /// The error message.
         /// </summary>
         [JsonProperty("error_message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("error_message")]
+#endif
         public string ErrorMessage { get; set; }
 
         /// <summary>
         /// The request causes the error.
         /// </summary>
         [JsonProperty("request")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request")]
+#endif
         public V1BillingMeterErrorReportTriggeredEventDataReasonErrorTypeSampleErrorRequest Request { get; set; }
     }
 }
diff --git a/src/Stripe.net/Events/V1BillingMeterErrorReportTriggeredEventDataReasonErrorTypeSampleErrorRequest.cs b/src/Stripe.net/Events/V1BillingMeterErrorReportTriggeredEventDataReasonErrorTypeSampleErrorRequest.cs
index c6b56c9ecc..cac57de703 100644
--- a/src/Stripe.net/Events/V1BillingMeterErrorReportTriggeredEventDataReasonErrorTypeSampleErrorRequest.cs
+++ b/src/Stripe.net/Events/V1BillingMeterErrorReportTriggeredEventDataReasonErrorTypeSampleErrorRequest.cs
@@ -3,6 +3,9 @@ namespace Stripe.Events
 {
     using System.Threading.Tasks;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class V1BillingMeterErrorReportTriggeredEventDataReasonErrorTypeSampleErrorRequest : StripeEntity<V1BillingMeterErrorReportTriggeredEventDataReasonErrorTypeSampleErrorRequest>
     {
@@ -10,6 +13,9 @@ public class V1BillingMeterErrorReportTriggeredEventDataReasonErrorTypeSampleErr
         /// The request idempotency key.
         /// </summary>
         [JsonProperty("identifier")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("identifier")]
+#endif
         public string Identifier { get; set; }
     }
 }
diff --git a/src/Stripe.net/Events/V1BillingMeterNoMeterFoundEvent.cs b/src/Stripe.net/Events/V1BillingMeterNoMeterFoundEvent.cs
index be4e1a345d..d2653eab7e 100644
--- a/src/Stripe.net/Events/V1BillingMeterNoMeterFoundEvent.cs
+++ b/src/Stripe.net/Events/V1BillingMeterNoMeterFoundEvent.cs
@@ -3,6 +3,9 @@ namespace Stripe.Events
 {
     using System.Threading.Tasks;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// This event occurs when async usage events have missing or invalid meter ids.
@@ -13,6 +16,9 @@ public class V1BillingMeterNoMeterFoundEvent : V2.Event
         /// Data for the v1.billing.meter.no_meter_found event.
         /// </summary>
         [JsonProperty("data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("data")]
+#endif
 
         public V1BillingMeterNoMeterFoundEventData Data { get; set; }
     }
diff --git a/src/Stripe.net/Events/V1BillingMeterNoMeterFoundEventData.cs b/src/Stripe.net/Events/V1BillingMeterNoMeterFoundEventData.cs
index b1ac8517f1..55792ce736 100644
--- a/src/Stripe.net/Events/V1BillingMeterNoMeterFoundEventData.cs
+++ b/src/Stripe.net/Events/V1BillingMeterNoMeterFoundEventData.cs
@@ -4,6 +4,9 @@ namespace Stripe.Events
     using System;
     using System.Threading.Tasks;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class V1BillingMeterNoMeterFoundEventData : StripeEntity<V1BillingMeterNoMeterFoundEventData>
     {
@@ -11,24 +14,36 @@ public class V1BillingMeterNoMeterFoundEventData : StripeEntity<V1BillingMeterNo
         /// Extra field included in the event's <c>data</c> when fetched from /v2/events.
         /// </summary>
         [JsonProperty("developer_message_summary")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("developer_message_summary")]
+#endif
         public string DeveloperMessageSummary { get; set; }
 
         /// <summary>
         /// This contains information about why meter error happens.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public V1BillingMeterNoMeterFoundEventDataReason Reason { get; set; }
 
         /// <summary>
         /// The end of the window that is encapsulated by this summary.
         /// </summary>
         [JsonProperty("validation_end")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("validation_end")]
+#endif
         public DateTime ValidationEnd { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
 
         /// <summary>
         /// The start of the window that is encapsulated by this summary.
         /// </summary>
         [JsonProperty("validation_start")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("validation_start")]
+#endif
         public DateTime ValidationStart { get; set; } = Stripe.Infrastructure.DateTimeUtils.UnixEpoch;
     }
 }
diff --git a/src/Stripe.net/Events/V1BillingMeterNoMeterFoundEventDataReason.cs b/src/Stripe.net/Events/V1BillingMeterNoMeterFoundEventDataReason.cs
index dd275359b5..3a74404440 100644
--- a/src/Stripe.net/Events/V1BillingMeterNoMeterFoundEventDataReason.cs
+++ b/src/Stripe.net/Events/V1BillingMeterNoMeterFoundEventDataReason.cs
@@ -4,6 +4,9 @@ namespace Stripe.Events
     using System.Collections.Generic;
     using System.Threading.Tasks;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class V1BillingMeterNoMeterFoundEventDataReason : StripeEntity<V1BillingMeterNoMeterFoundEventDataReason>
     {
@@ -11,12 +14,18 @@ public class V1BillingMeterNoMeterFoundEventDataReason : StripeEntity<V1BillingM
         /// The total error count within this window.
         /// </summary>
         [JsonProperty("error_count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("error_count")]
+#endif
         public long ErrorCount { get; set; }
 
         /// <summary>
         /// The error details.
         /// </summary>
         [JsonProperty("error_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("error_types")]
+#endif
         public List<V1BillingMeterNoMeterFoundEventDataReasonErrorType> ErrorTypes { get; set; }
     }
 }
diff --git a/src/Stripe.net/Events/V1BillingMeterNoMeterFoundEventDataReasonErrorType.cs b/src/Stripe.net/Events/V1BillingMeterNoMeterFoundEventDataReasonErrorType.cs
index c0bf5e9768..25795810fe 100644
--- a/src/Stripe.net/Events/V1BillingMeterNoMeterFoundEventDataReasonErrorType.cs
+++ b/src/Stripe.net/Events/V1BillingMeterNoMeterFoundEventDataReasonErrorType.cs
@@ -4,6 +4,9 @@ namespace Stripe.Events
     using System.Collections.Generic;
     using System.Threading.Tasks;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class V1BillingMeterNoMeterFoundEventDataReasonErrorType : StripeEntity<V1BillingMeterNoMeterFoundEventDataReasonErrorType>
     {
@@ -15,18 +18,27 @@ public class V1BillingMeterNoMeterFoundEventDataReasonErrorType : StripeEntity<V
         /// <c>no_meter</c>, <c>timestamp_in_future</c>, or <c>timestamp_too_far_in_past</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
         /// The number of errors of this type.
         /// </summary>
         [JsonProperty("error_count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("error_count")]
+#endif
         public long ErrorCount { get; set; }
 
         /// <summary>
         /// A list of sample errors of this type.
         /// </summary>
         [JsonProperty("sample_errors")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sample_errors")]
+#endif
         public List<V1BillingMeterNoMeterFoundEventDataReasonErrorTypeSampleError> SampleErrors { get; set; }
     }
 }
diff --git a/src/Stripe.net/Events/V1BillingMeterNoMeterFoundEventDataReasonErrorTypeSampleError.cs b/src/Stripe.net/Events/V1BillingMeterNoMeterFoundEventDataReasonErrorTypeSampleError.cs
index a83dc818fc..6358e1cf90 100644
--- a/src/Stripe.net/Events/V1BillingMeterNoMeterFoundEventDataReasonErrorTypeSampleError.cs
+++ b/src/Stripe.net/Events/V1BillingMeterNoMeterFoundEventDataReasonErrorTypeSampleError.cs
@@ -3,6 +3,9 @@ namespace Stripe.Events
 {
     using System.Threading.Tasks;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class V1BillingMeterNoMeterFoundEventDataReasonErrorTypeSampleError : StripeEntity<V1BillingMeterNoMeterFoundEventDataReasonErrorTypeSampleError>
     {
@@ -10,12 +13,18 @@ public class V1BillingMeterNoMeterFoundEventDataReasonErrorTypeSampleError : Str
         /// The error message.
         /// </summary>
         [JsonProperty("error_message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("error_message")]
+#endif
         public string ErrorMessage { get; set; }
 
         /// <summary>
         /// The request causes the error.
         /// </summary>
         [JsonProperty("request")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request")]
+#endif
         public V1BillingMeterNoMeterFoundEventDataReasonErrorTypeSampleErrorRequest Request { get; set; }
     }
 }
diff --git a/src/Stripe.net/Events/V1BillingMeterNoMeterFoundEventDataReasonErrorTypeSampleErrorRequest.cs b/src/Stripe.net/Events/V1BillingMeterNoMeterFoundEventDataReasonErrorTypeSampleErrorRequest.cs
index 6427470427..71a35a38ed 100644
--- a/src/Stripe.net/Events/V1BillingMeterNoMeterFoundEventDataReasonErrorTypeSampleErrorRequest.cs
+++ b/src/Stripe.net/Events/V1BillingMeterNoMeterFoundEventDataReasonErrorTypeSampleErrorRequest.cs
@@ -3,6 +3,9 @@ namespace Stripe.Events
 {
     using System.Threading.Tasks;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class V1BillingMeterNoMeterFoundEventDataReasonErrorTypeSampleErrorRequest : StripeEntity<V1BillingMeterNoMeterFoundEventDataReasonErrorTypeSampleErrorRequest>
     {
@@ -10,6 +13,9 @@ public class V1BillingMeterNoMeterFoundEventDataReasonErrorTypeSampleErrorReques
         /// The request idempotency key.
         /// </summary>
         [JsonProperty("identifier")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("identifier")]
+#endif
         public string Identifier { get; set; }
     }
 }
diff --git a/src/Stripe.net/Infrastructure/JsonConverters/STJAnyOfConverter.cs b/src/Stripe.net/Infrastructure/JsonConverters/STJAnyOfConverter.cs
new file mode 100644
index 0000000000..356ebc65cc
--- /dev/null
+++ b/src/Stripe.net/Infrastructure/JsonConverters/STJAnyOfConverter.cs
@@ -0,0 +1,96 @@
+#if NET6_0_OR_GREATER
+namespace Stripe.Infrastructure
+{
+    using System;
+    using System.Linq;
+    using System.Reflection;
+    using System.Text.Json;
+    using System.Text.Json.Serialization;
+
+    /// <summary>
+    /// Converts a <see cref="IAnyOf"/> to and from JSON.
+    /// </summary>
+    internal class STJAnyOfConverter : JsonConverter<object>
+    {
+        /// <summary>
+        /// Reads the JSON representation of the object.
+        /// </summary>
+        /// <param name="reader">The <see cref="Utf8JsonReader"/> to read from.</param>
+        /// <param name="typeToConvert">Type of the object.</param>
+        /// <param name="options">The calling serializer's options.</param>
+        /// <returns>The object value.</returns>
+        public override object Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+        {
+            if (reader.TokenType == JsonTokenType.Null)
+            {
+                return null;
+            }
+
+            object o = null;
+
+            // Try to deserialize with each possible type
+            var elem = JsonElement.ParseValue(ref reader);
+            foreach (var type in typeToConvert.GenericTypeArguments)
+            {
+                try
+                {
+                    o = JsonSerializer.Deserialize(elem, type, options);
+
+                    // If deserialization succeeds, stop
+                    break;
+                }
+                catch (JsonException)
+                {
+                    // Do nothing, just try the next type
+                }
+            }
+
+            if (o == null)
+            {
+                throw new JsonException(string.Format(
+                    "Cannot deserialize the current JSON object into any of the expected types ({0}).",
+                    string.Join(", ", typeToConvert.GenericTypeArguments.Select(t => t.FullName))));
+            }
+
+            return Activator.CreateInstance(typeToConvert, o);
+        }
+
+        /// <summary>
+        /// Writes the JSON representation of the object.
+        /// </summary>
+        /// <param name="writer">The <see cref="Utf8JsonWriter"/> to write to.</param>
+        /// <param name="value">The value.</param>
+        /// <param name="options">The calling serializer's options.</param>
+        public override void Write(Utf8JsonWriter writer, object value, JsonSerializerOptions options)
+        {
+            switch (value)
+            {
+                case null:
+                    JsonSerializer.Serialize(writer, null, options);
+                    break;
+
+                case IAnyOf anyOf:
+                    JsonSerializer.Serialize(writer, anyOf.Value, options);
+                    break;
+
+                default:
+                    throw new JsonException(string.Format(
+                        "Unexpected value when converting AnyOf. Expected IAnyOf, got {0}.",
+                        value.GetType()));
+            }
+        }
+
+        /// <summary>
+        /// Determines whether this instance can convert the specified object type.
+        /// </summary>
+        /// <param name="objectType">Type of the object.</param>
+        /// <returns>
+        ///     <c>true</c> if this instance can convert the specified object type; otherwise, <c>false</c>.
+        /// </returns>
+        public override bool CanConvert(Type objectType)
+        {
+            return typeof(IAnyOf).GetTypeInfo().IsAssignableFrom(objectType.GetTypeInfo());
+        }
+    }
+}
+#endif
diff --git a/src/Stripe.net/Infrastructure/JsonConverters/STJDefaultConverter.cs b/src/Stripe.net/Infrastructure/JsonConverters/STJDefaultConverter.cs
new file mode 100644
index 0000000000..c2760d6455
--- /dev/null
+++ b/src/Stripe.net/Infrastructure/JsonConverters/STJDefaultConverter.cs
@@ -0,0 +1,111 @@
+#if NET6_0_OR_GREATER
+namespace Stripe.Infrastructure
+{
+    using System;
+    using System.Text.Json;
+    using System.Text.Json.Serialization;
+    using static Stripe.Infrastructure.SerializablePropertyCache;
+
+    internal class STJDefaultConverter<T> : JsonConverter<T>
+    {
+        /// <summary>
+        /// Reads the JSON representation of the object.
+        ///
+        /// Adapted from https://learn.microsoft.com/en-us/dotnet/standard/serialization/system-text-json/converters-how-to#sample-factory-pattern-converter.
+        /// </summary>
+        /// <param name="reader">The <see cref="Utf8JsonReader"/> to read from.</param>
+        /// <param name="typeToConvert">Type of the object.</param>
+        /// <param name="options">The calling serializer's options.</param>
+        /// <returns>The object value.</returns>
+        public override T Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+        {
+            return this.ReadFullObject(ref reader, typeToConvert, options);
+        }
+
+        protected T ReadFullObject(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+        {
+            if (reader.TokenType != JsonTokenType.StartObject)
+            {
+                throw new JsonException();
+            }
+
+            var allProperties = GetPropertiesForType(typeToConvert);
+            var newInstance = Activator.CreateInstance(typeToConvert);
+
+            while (reader.Read())
+            {
+                if (reader.TokenType == JsonTokenType.EndObject)
+                {
+                    return (T)newInstance;
+                }
+
+                // Get the key.
+                if (reader.TokenType != JsonTokenType.PropertyName)
+                {
+                    throw new JsonException();
+                }
+
+                string propertyName = reader.GetString();
+
+                foreach (var property in allProperties)
+                {
+                    if (property.JsonPropertyName == propertyName)
+                    {
+                        var valueType = property.PropertyInfo.PropertyType;
+                        var valueConverter = property.GetConverter(options);
+
+                        // Get the value.
+                        reader.Read();
+#pragma warning disable SA1009 // Closing parenthesis should be spaced correctly
+                        object value = valueConverter.Read(ref reader, valueType, options)!;
+#pragma warning restore SA1009 // Closing parenthesis should be spaced correctly
+
+                        property.Set(newInstance, value);
+                        break;
+                    }
+                }
+            }
+
+            throw new JsonException();
+        }
+
+        /// <summary>
+        /// Writes the JSON representation of the object.
+        /// </summary>
+        /// <param name="writer">The <see cref="Utf8JsonWriter"/> to write to.</param>
+        /// <param name="value">The value.</param>
+        /// <param name="options">The calling serializer's options.</param>
+        public override void Write(Utf8JsonWriter writer, T value, JsonSerializerOptions options)
+        {
+            var allProperties = GetPropertiesForType(value.GetType());
+
+            writer.WriteStartObject();
+            foreach (var property in allProperties)
+            {
+                object valueToSerialize = property.Get(value);
+
+                switch (valueToSerialize)
+                {
+                    case null:
+                        if (property.IgnoreCondition != JsonIgnoreCondition.WhenWritingNull)
+                        {
+                            writer.WritePropertyName(property.JsonPropertyName);
+                            writer.WriteNullValue();
+                        }
+
+                        break;
+                    default:
+                        writer.WritePropertyName(property.JsonPropertyName);
+
+                        var converter = property.GetConverter(options);
+                        converter.Write(writer, valueToSerialize, options);
+
+                        break;
+                }
+            }
+
+            writer.WriteEndObject();
+        }
+    }
+}
+#endif
diff --git a/src/Stripe.net/Infrastructure/JsonConverters/STJEnumerableObjectConverter.cs b/src/Stripe.net/Infrastructure/JsonConverters/STJEnumerableObjectConverter.cs
new file mode 100644
index 0000000000..66cdc304a8
--- /dev/null
+++ b/src/Stripe.net/Infrastructure/JsonConverters/STJEnumerableObjectConverter.cs
@@ -0,0 +1,99 @@
+#if NET6_0_OR_GREATER
+namespace Stripe.Infrastructure
+{
+    using System;
+    using System.Collections;
+    using System.Reflection;
+    using System.Text.Json;
+    using System.Text.Json.Serialization;
+    using static Stripe.Infrastructure.SerializablePropertyCache;
+
+    /// <summary>
+    /// A custom converter for Enumerable objects.  This is needed because
+    /// STJ serializes IEnumerable objects as an array, and discards additional
+    /// fields (like those in StripeList or StripeSearchResult).
+    /// </summary>
+    internal class STJEnumerableObjectConverter : JsonConverterFactory
+    {
+        /// <summary>
+        /// Determines whether this instance can convert the specified object type.
+        /// </summary>
+        /// <param name="objectType">Type of the object.</param>
+        /// <returns>
+        ///     <c>true</c> if this instance can convert the specified object type; otherwise, <c>false</c>.
+        /// </returns>
+        public override bool CanConvert(Type objectType)
+        {
+            return typeof(IEnumerable).GetTypeInfo().IsAssignableFrom(objectType.GetTypeInfo());
+        }
+
+        public override JsonConverter CreateConverter(
+            Type type,
+            JsonSerializerOptions options)
+        {
+            Type[] typeArguments = type.GetGenericArguments();
+            Type fieldType = typeArguments[0];
+
+#pragma warning disable SA1009 // Closing parenthesis should be spaced correctly
+            JsonConverter converter = (JsonConverter)Activator.CreateInstance(
+                typeof(STJEnumerableObjectConverterInner<>).MakeGenericType(
+                    type),
+                BindingFlags.Instance | BindingFlags.Public,
+                binder: null,
+                args: null,
+                culture: null)!;
+#pragma warning restore SA1009 // Closing parenthesis should be spaced correctly
+
+            return converter;
+        }
+
+        internal class STJEnumerableObjectConverterInner<T> : JsonConverter<T>
+        {
+            /// <summary>
+            /// Reads the JSON representation of the object.
+            /// </summary>
+            /// <param name="reader">The <see cref="Utf8JsonReader"/> to read from.</param>
+            /// <param name="typeToConvert">Type of the object.</param>
+            /// <param name="options">The calling serializer's options.</param>
+            /// <returns>The object value.</returns>
+            public override T Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+            {
+                throw new NotSupportedException("STJEnumerableObjectConverter should only be used while serializing.");
+            }
+
+            /// <summary>
+            /// Writes the JSON representation of the object.
+            /// </summary>
+            /// <param name="writer">The <see cref="Utf8JsonWriter"/> to write to.</param>
+            /// <param name="value">The value.</param>
+            /// <param name="options">The calling serializer's options.</param>
+            public override void Write(Utf8JsonWriter writer, T value, JsonSerializerOptions options)
+            {
+                var allProperties = GetPropertiesForType(value.GetType());
+                writer.WriteStartObject();
+                foreach (var property in allProperties)
+                {
+                    var valueToSerialize = property.Get(value);
+
+                    writer.WritePropertyName(property.JsonPropertyName);
+                    switch (valueToSerialize)
+                    {
+                        case null:
+                            // this assumes that all of the members of a Stripe.net IEnumerable can be
+                            // written when null, which is a safe assumption at the time this was
+                            // written
+                            writer.WriteNullValue();
+                            break;
+                        default:
+                            var converter = property.GetConverter(options);
+                            converter.Write(writer, valueToSerialize, options);
+                            break;
+                    }
+                }
+
+                writer.WriteEndObject();
+            }
+        }
+    }
+}
+#endif
diff --git a/src/Stripe.net/Infrastructure/JsonConverters/STJExpandableFieldConverter.cs b/src/Stripe.net/Infrastructure/JsonConverters/STJExpandableFieldConverter.cs
new file mode 100644
index 0000000000..4ff5e851ed
--- /dev/null
+++ b/src/Stripe.net/Infrastructure/JsonConverters/STJExpandableFieldConverter.cs
@@ -0,0 +1,137 @@
+#if NET6_0_OR_GREATER
+namespace Stripe.Infrastructure
+{
+    using System;
+    using System.Reflection;
+    using System.Text.Json;
+    using System.Text.Json.Serialization;
+
+    /// <summary>
+    /// A JsonConverterFactory for use with generic IExpandableField implementations
+    /// to ensure we return a correctly typed custom converter.
+    /// </summary>
+#pragma warning disable SA1649 // File name should match first type name
+    internal class STJExpandableFieldConverterFactory : JsonConverterFactory
+#pragma warning restore SA1649 // File name should match first type name
+    {
+        public override bool CanConvert(Type typeToConvert)
+        {
+            return typeof(IExpandableField).GetTypeInfo().IsAssignableFrom(typeToConvert.GetTypeInfo());
+        }
+
+        public override JsonConverter CreateConverter(
+            Type type,
+            JsonSerializerOptions options)
+        {
+            Type[] typeArguments = type.GetGenericArguments();
+            Type fieldType = typeArguments[0];
+
+#pragma warning disable SA1009 // Closing parenthesis should be spaced correctly
+            JsonConverter converter = (JsonConverter)Activator.CreateInstance(
+                typeof(STJExpandableFieldConverter<>).MakeGenericType(
+                    fieldType),
+                BindingFlags.Instance | BindingFlags.Public,
+                binder: null,
+                args: null,
+                culture: null)!;
+#pragma warning restore SA1009 // Closing parenthesis should be spaced correctly
+
+            return converter;
+        }
+    }
+
+    /// <summary>
+    /// Converts a <see cref="ExpandableField{T}"/> to and from JSON.
+    /// </summary>
+    /// <typeparam name="T">Type of the field when expanded.</typeparam>
+#pragma warning disable SA1402 // File may only contain a single type
+    internal class STJExpandableFieldConverter<T> : JsonConverter<ExpandableField<T>>
+#pragma warning restore SA1402 // File may only contain a single type
+        where T : IHasId
+    {
+        public override bool HandleNull => true;
+
+        /// <summary>
+        /// Reads the JSON representation of the object.
+        /// </summary>
+        /// <param name="reader">The <see cref="Utf8JsonReader"/> to read from.</param>
+        /// <param name="typeToConvert">Type of the object.</param>
+        /// <param name="options">The calling serializer's options.</param>
+        /// <returns>The object value.</returns>
+        public override ExpandableField<T> Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+        {
+            var value = new ExpandableField<T>();
+
+            switch (reader.TokenType)
+            {
+                case JsonTokenType.Null:
+                    // Do nothing
+                    break;
+
+                case JsonTokenType.String:
+                    value.Id = (string)reader.GetString();
+                    break;
+
+                case JsonTokenType.StartObject:
+                    var elem = JsonElement.ParseValue(ref reader);
+
+                    value.ExpandedObject = (T)JsonSerializer.Deserialize(elem, typeToConvert.GenericTypeArguments[0], options);
+
+                    // If we failed to deserialize the expanded object (e.g. because of an unknown
+                    // type), make a last ditch attempt at getting the ID.
+                    if (value.ExpandedObject == null)
+                    {
+                        value.Id = elem.GetProperty("id").GetString();
+                    }
+
+                    break;
+
+                default:
+                    throw new JsonException(string.Format(
+                        "Unexpected token when converting ExpandableField: {0}.",
+                        reader.TokenType.ToString()));
+            }
+
+            return value;
+        }
+
+        /// <summary>
+        /// Writes the JSON representation of the object.
+        /// </summary>
+        /// <param name="writer">The <see cref="Utf8JsonWriter"/> to write to.</param>
+        /// <param name="value">The value.</param>
+        /// <param name="options">The calling serializer's options.</param>
+        public override void Write(Utf8JsonWriter writer, ExpandableField<T> value, JsonSerializerOptions options)
+        {
+            switch (value)
+            {
+                case null:
+                    writer.WriteNullValue();
+                    break;
+
+                case IExpandableField<T> expandableField:
+                    if (expandableField.IsExpanded)
+                    {
+                        JsonSerializer.Serialize(writer, expandableField.ExpandedObject, options);
+                    }
+                    else
+                    {
+                        writer.WriteStringValue(expandableField.Id);
+                    }
+
+                    break;
+
+                default:
+                    throw new JsonException(string.Format(
+                        "Unexpected value when converting ExpandableField. Expected IExpandableField, got {0}.",
+                        value.GetType()));
+            }
+        }
+
+        public override bool CanConvert(Type typeToConvert)
+        {
+            return typeof(IExpandableField).GetTypeInfo().IsAssignableFrom(typeToConvert.GetTypeInfo());
+        }
+    }
+}
+#endif
diff --git a/src/Stripe.net/Infrastructure/JsonConverters/STJMemberSerializationOptIn.cs b/src/Stripe.net/Infrastructure/JsonConverters/STJMemberSerializationOptIn.cs
new file mode 100644
index 0000000000..476712a107
--- /dev/null
+++ b/src/Stripe.net/Infrastructure/JsonConverters/STJMemberSerializationOptIn.cs
@@ -0,0 +1,48 @@
+#if NET6_0_OR_GREATER
+namespace Stripe.Infrastructure
+{
+    using System;
+    using System.Reflection;
+    using System.Text.Json;
+    using System.Text.Json.Serialization;
+    using static Stripe.Infrastructure.SerializablePropertyCache;
+
+    /// <summary>
+    /// A JsonConverterFactory to implement the equivalent to
+    /// Newtonsoft Json.NET [JsonObject(MemberSerialization.OptIn)].
+    /// This is needed to serialize non-public properties such as the
+    /// inner ExpandableField properties.
+    /// </summary>
+    internal class STJMemberSerializationOptIn : JsonConverterFactory
+    {
+        /// <summary>
+        /// Determines whether this instance can convert the specified object type.
+        /// </summary>
+        /// <param name="objectType">Type of the object.</param>
+        /// <returns>
+        ///     <c>true</c> if this instance can convert the specified object type; otherwise, <c>false</c>.
+        /// </returns>
+        public override bool CanConvert(Type objectType)
+        {
+            return objectType.IsClass;
+        }
+
+        public override JsonConverter CreateConverter(
+            Type type,
+            JsonSerializerOptions options)
+        {
+#pragma warning disable SA1009 // Closing parenthesis should be spaced correctly
+            JsonConverter converter = (JsonConverter)Activator.CreateInstance(
+                typeof(STJDefaultConverter<>).MakeGenericType(
+                    type),
+                BindingFlags.Instance | BindingFlags.Public,
+                binder: null,
+                args: null,
+                culture: null)!;
+#pragma warning restore SA1009 // Closing parenthesis should be spaced correctly
+
+            return converter;
+        }
+    }
+}
+#endif
diff --git a/src/Stripe.net/Infrastructure/JsonConverters/STJStripeObjectConverter.cs b/src/Stripe.net/Infrastructure/JsonConverters/STJStripeObjectConverter.cs
new file mode 100644
index 0000000000..ee6563bfeb
--- /dev/null
+++ b/src/Stripe.net/Infrastructure/JsonConverters/STJStripeObjectConverter.cs
@@ -0,0 +1,85 @@
+#if NET6_0_OR_GREATER
+namespace Stripe.Infrastructure
+{
+    using System;
+    using System.Reflection;
+    using System.Text.Json;
+    using System.Text.Json.Serialization;
+    using static Stripe.Infrastructure.SerializablePropertyCache;
+
+    /// <summary>
+    /// This converter can be used to deserialize any Stripe object. It is mainly useful for
+    /// polymorphic attributes, when the property's type is an interface instead of a concrete type.
+    /// In this case, the converter will use the value of the `object` key in the JSON payload to
+    /// decide which concrete type to instantiate. If no concrete type is found (or if one is found,
+    /// but it's not compatible with the expected interface), then the converter returns `null`.
+    /// </summary>
+    ///
+    internal class STJStripeObjectConverter : JsonConverterFactory
+    {
+        /// <summary>
+        /// Determines whether this instance can convert the specified object type.
+        /// </summary>
+        /// <param name="objectType">Type of the object.</param>
+        /// <returns>
+        ///     <c>true</c> if this instance can convert the specified object type; otherwise, <c>false</c>.
+        /// </returns>
+        public override bool CanConvert(Type objectType)
+        {
+            var typeInfo = objectType.GetTypeInfo();
+            return (typeInfo.IsInterface && typeInfo.FullName.StartsWith("Stripe")) ||
+                    typeInfo.FullName.Equals("Stripe.V2.Event");
+        }
+
+        public override JsonConverter CreateConverter(
+            Type type,
+            JsonSerializerOptions options)
+        {
+#pragma warning disable SA1009 // Closing parenthesis should be spaced correctly
+            JsonConverter converter = (JsonConverter)Activator.CreateInstance(
+                typeof(STJStripeObjectConverterInner<>).MakeGenericType(
+                    type),
+                BindingFlags.Instance | BindingFlags.Public,
+                binder: null,
+                args: null,
+                culture: null)!;
+#pragma warning restore SA1009 // Closing parenthesis should be spaced correctly
+
+            return converter;
+        }
+
+        internal class STJStripeObjectConverterInner<T> : STJDefaultConverter<T>
+        where T : class
+        {
+            /// <summary>
+            /// Reads the JSON representation of the object.  This creates the appropriate
+            /// type by examining the object property in the JSON (instead of looking at the
+            /// typeToConvert).
+            /// </summary>
+            /// <param name="reader">The <see cref="Utf8JsonReader"/> to read from.</param>
+            /// <param name="typeToConvert">Type of the object.</param>
+            /// <param name="options">The calling serializer's options.</param>
+            /// <returns>The object value.</returns>
+            public override T Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+            {
+                if (reader.TokenType == JsonTokenType.Null)
+                {
+                    return null;
+                }
+
+                var jsonObject = JsonElement.ParseValue(ref reader);
+                var objectValue = jsonObject.GetProperty("object").GetString();
+
+                Type concreteType = StripeTypeRegistry.GetConcreteType(typeToConvert, objectValue);
+                if (concreteType == null)
+                {
+                    // Couldn't find a concrete type to instantiate, return null.
+                    return null;
+                }
+
+                return (T)JsonSerializer.Deserialize(jsonObject, concreteType, options);
+            }
+        }
+    }
+}
+#endif
diff --git a/src/Stripe.net/Infrastructure/JsonConverters/STJUnixDateTimeConverter.cs b/src/Stripe.net/Infrastructure/JsonConverters/STJUnixDateTimeConverter.cs
new file mode 100644
index 0000000000..8fbf247152
--- /dev/null
+++ b/src/Stripe.net/Infrastructure/JsonConverters/STJUnixDateTimeConverter.cs
@@ -0,0 +1,99 @@
+#if NET6_0_OR_GREATER
+namespace Stripe.Infrastructure
+{
+    using System;
+    using System.Text.Json;
+    using System.Text.Json.Serialization;
+
+    /// <summary>
+    /// Converts a <see cref="DateTime"/> to and from Unix epoch time.
+    /// </summary>
+    /// <remarks>
+    /// This is a somewhat simplified version of the converter with the same name that was added in
+    /// Newtonsoft.Json 11.0. Once we bump the minimum version of Newtonsoft.Json to 11.0, we can
+    /// start using the provided converter and get rid of this class.
+    /// </remarks>
+    internal class STJUnixDateTimeConverter : JsonConverter<DateTime>
+    {
+        /// <summary>
+        /// Reads the JSON representation of the object.
+        /// </summary>
+        /// <param name="reader">The <see cref="Utf8JsonReader"/> to read from.</param>
+        /// <param name="typeToConvert">Type of the object.</param>
+        /// <param name="options">The calling serializer's options.</param>
+        /// <returns>The object value.</returns>
+        public override DateTime Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+        {
+            bool nullable = IsNullable(typeToConvert);
+            long seconds;
+
+            if (reader.TokenType == JsonTokenType.Number)
+            {
+                seconds = reader.GetInt64();
+            }
+            else if (reader.TokenType == JsonTokenType.String)
+            {
+                if (!long.TryParse(reader.GetString(), out seconds))
+                {
+                    throw new JsonException(string.Format("Cannot convert invalid value to {0}.", typeToConvert));
+                }
+            }
+            else
+            {
+                throw new JsonException(string.Format("Unexpected token parsing date. Expected Integer or String, got {0}.", reader.TokenType));
+            }
+
+            if (seconds >= 0)
+            {
+                return DateTimeUtils.UnixEpoch.AddSeconds(seconds);
+            }
+            else
+            {
+                throw new JsonException(string.Format("Cannot convert value that is before Unix epoch of 00:00:00 UTC on 1 January 1970 to {0}.", typeToConvert));
+            }
+        }
+
+        /// <summary>
+        /// Writes the JSON representation of the object.
+        /// </summary>
+        /// <param name="writer">The <see cref="Utf8JsonWriter"/> to write to.</param>
+        /// <param name="value">The value.</param>
+        /// <param name="options">The calling serializer's options.</param>
+        public override void Write(Utf8JsonWriter writer, DateTime value, JsonSerializerOptions options)
+        {
+            long seconds;
+
+            if (value is DateTime dateTime)
+            {
+                seconds = (long)(dateTime.ToUniversalTime() - DateTimeUtils.UnixEpoch).TotalSeconds;
+            }
+            else
+            {
+                throw new JsonException("Expected date object value.");
+            }
+
+            if (seconds < 0)
+            {
+                throw new JsonException("Cannot convert date value that is before Unix epoch of 00:00:00 UTC on 1 January 1970.");
+            }
+
+            writer.WriteNumberValue(seconds);
+        }
+
+        private static bool IsNullable(Type t)
+        {
+            if (t == null)
+            {
+                throw new ArgumentNullException(nameof(t));
+            }
+
+            if (t.IsValueType)
+            {
+                return t.IsGenericType && t.GetGenericTypeDefinition() == typeof(Nullable<>);
+            }
+
+            return true;
+        }
+    }
+}
+#endif
diff --git a/src/Stripe.net/Infrastructure/JsonConverters/STJV2EventConverter.cs b/src/Stripe.net/Infrastructure/JsonConverters/STJV2EventConverter.cs
new file mode 100644
index 0000000000..cee0c0f97b
--- /dev/null
+++ b/src/Stripe.net/Infrastructure/JsonConverters/STJV2EventConverter.cs
@@ -0,0 +1,41 @@
+#if NET6_0_OR_GREATER
+namespace Stripe.Infrastructure
+{
+    using System;
+    using System.Reflection;
+    using System.Text.Json;
+    using System.Text.Json.Serialization;
+    using static Stripe.Infrastructure.SerializablePropertyCache;
+
+    /// <summary>
+    /// Converts a <see cref="V2.Event"/> to JSON, including any fields
+    /// in derived classes.
+    /// </summary>
+    internal class STJV2EventConverter : STJDefaultConverter<V2.Event>
+    {
+        /// <summary>
+        /// Reads the JSON representation of the object.
+        /// </summary>
+        /// <param name="reader">The <see cref="Utf8JsonReader"/> to read from.</param>
+        /// <param name="typeToConvert">Type of the object.</param>
+        /// <param name="options">The calling serializer's options.</param>
+        /// <returns>The object value.</returns>
+        public override V2.Event Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+        {
+            throw new NotSupportedException("STJV2EventConverter should only be used while serializing.");
+        }
+
+        /// <summary>
+        /// Determines whether this instance can convert the specified object type.
+        /// </summary>
+        /// <param name="objectType">Type of the object.</param>
+        /// <returns>
+        ///     <c>true</c> if this instance can convert the specified object type; otherwise, <c>false</c>.
+        /// </returns>
+        public override bool CanConvert(Type objectType)
+        {
+            return typeof(Stripe.V2.Event).GetTypeInfo().IsAssignableFrom(objectType.GetTypeInfo());
+        }
+    }
+}
+#endif
diff --git a/src/Stripe.net/Infrastructure/JsonConverters/SerializablePropertyCache.cs b/src/Stripe.net/Infrastructure/JsonConverters/SerializablePropertyCache.cs
new file mode 100644
index 0000000000..f7bbece3a7
--- /dev/null
+++ b/src/Stripe.net/Infrastructure/JsonConverters/SerializablePropertyCache.cs
@@ -0,0 +1,211 @@
+#if NET6_0_OR_GREATER
+namespace Stripe.Infrastructure
+{
+    using System;
+    using System.Collections.Generic;
+    using System.Reflection;
+    using System.Text.Json;
+    using System.Text.Json.Serialization;
+
+    /// <summary>
+    /// An helper class for efficiently working with serializable properties.  This class manages
+    /// the data and metadata needed for many of our STJ custom converters.
+    /// </summary>
+    internal class SerializablePropertyCache
+    {
+        private static Dictionary<Type, JsonConverter> converterCache = new Dictionary<Type, JsonConverter>();
+        private static Dictionary<Type, List<SerializablePropertyInfo>> propertyCache = new Dictionary<Type, List<SerializablePropertyInfo>>();
+
+        internal static List<SerializablePropertyInfo> GetPropertiesForType(Type type)
+        {
+            if (!propertyCache.TryGetValue(type, out var propsToSerialize))
+            {
+                // Gets the all properties including nonpublic properties
+                var rawProps = type.GetProperties(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
+
+                propsToSerialize = new List<SerializablePropertyInfo>();
+                foreach (var prop in rawProps)
+                {
+                    var propertyNameAttribute = prop.GetCustomAttribute(typeof(JsonPropertyNameAttribute), false) as JsonPropertyNameAttribute;
+                    if (propertyNameAttribute == null)
+                    {
+                        // skip any properties not annotated with JsonPropertyName
+                        continue;
+                    }
+
+                    var ignoreCondition = default(JsonIgnoreCondition);
+                    if (prop.GetCustomAttribute(typeof(JsonIgnoreAttribute), false) is JsonIgnoreAttribute ignoreAttribute)
+                    {
+                        if (ignoreAttribute.Condition == JsonIgnoreCondition.Always)
+                        {
+                            continue;
+                        }
+
+                        ignoreCondition = ignoreAttribute.Condition;
+                    }
+
+                    var customConverterAttribute = prop.GetCustomAttribute(typeof(JsonConverterAttribute), false) as JsonConverterAttribute;
+
+                    propsToSerialize.Add(new SerializablePropertyInfo()
+                    {
+                        PropertyInfo = prop,
+                        JsonPropertyName = propertyNameAttribute.Name,
+                        IgnoreCondition = ignoreCondition,
+                        CustomConverterType = customConverterAttribute?.ConverterType,
+                    });
+                }
+
+                propertyCache[type] = propsToSerialize;
+            }
+
+            return propsToSerialize;
+        }
+
+        // Create the various methods stored in SerializablePropertyInfo
+        // this uses heavy reflection so that our internals are typesafe
+        // and that our converter interface is JsonConverter<object> which
+        // is required because JsonConverter does not expose Read or Write.
+        internal class SerializablePropertyInfo
+        {
+            private static MethodInfo createGetDelegateMethod = typeof(SerializablePropertyInfo).GetMethod("CreateGetDelegate", BindingFlags.Static | BindingFlags.NonPublic);
+            private static MethodInfo createSetDelegateMethod = typeof(SerializablePropertyInfo).GetMethod("CreateSetDelegate", BindingFlags.Static | BindingFlags.NonPublic);
+            private static MethodInfo getConverterForTypeMethod = typeof(SerializablePropertyInfo).GetMethod("GetConverterForType", BindingFlags.Static | BindingFlags.NonPublic);
+            private static MethodInfo getDefaultConverterMethod = typeof(SerializablePropertyInfo).GetMethod("GetDefaultConverter", BindingFlags.Static | BindingFlags.NonPublic);
+
+            private Func<object, object> getDelegate = null;
+            private Action<object, object> setDelegate = null;
+            private Func<JsonSerializerOptions, JsonConverter<object>> getConverter = null;
+
+            /// <summary>
+            /// The PropertyInfo object that describes this property.
+            /// </summary>
+            internal PropertyInfo PropertyInfo { get; set; }
+
+            /// <summary>
+            /// The JSON property name for this property.
+            /// </summary>
+            internal string JsonPropertyName { get; set; }
+
+            /// <summary>
+            /// The condition under which to ignore this property, or null
+            /// if JsonIgnore is not found.
+            /// </summary>
+            internal JsonIgnoreCondition? IgnoreCondition { get; set; }
+
+            internal Type CustomConverterType { get; set; }
+
+            /// <summary>
+            /// Gets the converter to use to convert this property, either
+            /// a custom one from the attribute or the converter returned
+            /// from the STJ serialization options.
+            /// </summary>
+            internal JsonConverter<object> GetConverter(JsonSerializerOptions options)
+            {
+                if (this.getConverter == null)
+                {
+                    var customConverter = default(JsonConverter<object>);
+                    if (this.CustomConverterType != null)
+                    {
+                        // this assumes any property-level JsonConverter attribute
+                        // specifies a JsonConverter<> type and not a JsonConverterFactory
+                        // type
+                        var baseType = this.CustomConverterType.BaseType;
+                        var cvtGenericMethod = getConverterForTypeMethod.MakeGenericMethod(baseType, baseType.GenericTypeArguments[0]);
+                        customConverter = (JsonConverter<object>)cvtGenericMethod.Invoke(null, new object[] { this.CustomConverterType });
+                    }
+
+                    var defaultCvtGenericMethod = getDefaultConverterMethod.MakeGenericMethod(this.PropertyInfo.PropertyType);
+                    var getDefaultConverter = (Func<JsonSerializerOptions, JsonConverter<object>>)defaultCvtGenericMethod.Invoke(null, new object[] { this.PropertyInfo.PropertyType });
+                    this.getConverter = options => customConverter ?? getDefaultConverter(options);
+                }
+
+                return this.getConverter(options);
+            }
+
+            /// <summary>
+            /// A fast GetValue method.
+            /// </summary>
+            internal object Get(object obj)
+            {
+                if (this.getDelegate == null)
+                {
+                    var gm = this.PropertyInfo.GetGetMethod(true);
+                    var getMethod = createGetDelegateMethod.MakeGenericMethod(this.PropertyInfo.DeclaringType, this.PropertyInfo.PropertyType);
+                    this.getDelegate = (Func<object, object>)getMethod.Invoke(null, new object[] { gm });
+                }
+
+                return this.getDelegate(obj);
+            }
+
+            /// <summary>
+            /// A fast SetValue method.
+            /// </summary>
+            internal void Set(object obj, object value)
+            {
+                if (this.setDelegate == null)
+                {
+                    var sm = this.PropertyInfo.GetSetMethod(true);
+                    var setMethod = createSetDelegateMethod.MakeGenericMethod(this.PropertyInfo.DeclaringType, this.PropertyInfo.PropertyType);
+                    this.setDelegate = (Action<object, object>)setMethod.Invoke(null, new object[] { sm });
+                }
+
+                this.setDelegate(obj, value);
+            }
+
+            // These are used via reflection, so don't warn
+#pragma warning disable IDE0051 // Remove unused private members
+            private static Func<object, object> CreateGetDelegate<T, TReturn>(MethodInfo m)
+            {
+                var f = (Func<T, TReturn>)Delegate.CreateDelegate(typeof(Func<T, TReturn>), m);
+                return t => f((T)t);
+            }
+
+            private static Action<object, object> CreateSetDelegate<T, TValue>(MethodInfo m)
+            {
+                var f = (Action<T, TValue>)Delegate.CreateDelegate(typeof(Action<T, TValue>), m);
+                return (t, v) => f((T)t, (TValue)v);
+            }
+
+            private static JsonConverter<object> GetConverterForType<T, TV>(Type ct)
+            where T : JsonConverter<TV>
+            {
+                if (!converterCache.TryGetValue(ct, out var conv))
+                {
+                    conv = (JsonConverter)Activator.CreateInstance(ct);
+                    converterCache[ct] = conv;
+                }
+
+                return new JsonConverterAdapter<T, TV>((T)conv);
+            }
+
+            private static Func<JsonSerializerOptions, JsonConverter<object>> GetDefaultConverter<TV>(Type t)
+            {
+                return options => new JsonConverterAdapter<JsonConverter<TV>, TV>((JsonConverter<TV>)options.GetConverter(t));
+            }
+#pragma warning restore IDE0051 // Remove unused private members
+
+        }
+
+        internal class JsonConverterAdapter<T, TV> : JsonConverter<object>
+        where T : JsonConverter<TV>
+        {
+            private T inner;
+
+            internal JsonConverterAdapter(T inner)
+            {
+                this.inner = inner;
+            }
+
+            public override object Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+            {
+                return this.inner.Read(ref reader, typeToConvert, options);
+            }
+
+            public override void Write(Utf8JsonWriter writer, object value, JsonSerializerOptions options)
+            {
+                this.inner.Write(writer, (TV)value, options);
+            }
+        }
+    }
+}
+#endif
diff --git a/src/Stripe.net/Infrastructure/JsonConverters/UnixDateTimeConverter.cs b/src/Stripe.net/Infrastructure/JsonConverters/UnixDateTimeConverter.cs
index 6e1c92b45b..869c954e31 100644
--- a/src/Stripe.net/Infrastructure/JsonConverters/UnixDateTimeConverter.cs
+++ b/src/Stripe.net/Infrastructure/JsonConverters/UnixDateTimeConverter.cs
@@ -14,8 +14,6 @@ namespace Stripe.Infrastructure
     /// </remarks>
     public class UnixDateTimeConverter : DateTimeConverterBase
     {
-        internal static readonly DateTime UnixEpoch = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
-
         /// <summary>
         /// Writes the JSON representation of the object.
         /// </summary>
@@ -28,7 +26,7 @@ public override void WriteJson(JsonWriter writer, object value, JsonSerializer s
 
             if (value is DateTime dateTime)
             {
-                seconds = (long)(dateTime.ToUniversalTime() - UnixEpoch).TotalSeconds;
+                seconds = (long)(dateTime.ToUniversalTime() - DateTimeUtils.UnixEpoch).TotalSeconds;
             }
             else
             {
@@ -84,7 +82,7 @@ public override object ReadJson(JsonReader reader, Type objectType, object exist
 
             if (seconds >= 0)
             {
-                return UnixEpoch.AddSeconds(seconds);
+                return DateTimeUtils.UnixEpoch.AddSeconds(seconds);
             }
             else
             {
diff --git a/src/Stripe.net/Infrastructure/NoSystemTextJsonAttributesNeededAttribute.cs b/src/Stripe.net/Infrastructure/NoSystemTextJsonAttributesNeededAttribute.cs
new file mode 100644
index 0000000000..a2a894bb52
--- /dev/null
+++ b/src/Stripe.net/Infrastructure/NoSystemTextJsonAttributesNeededAttribute.cs
@@ -0,0 +1,22 @@
+namespace Stripe
+{
+    using System;
+
+    /// <summary>
+    /// Used to indicate that a particular class or property that has Json.NET attributes does
+    /// not need System.Text.Json properties.  The reason will give more context as to why.
+    /// </summary>
+    /// <remarks>
+    /// This is only used for an internal wholesome test.
+    /// </remarks>
+    [AttributeUsage(AttributeTargets.Class | AttributeTargets.Property)]
+    internal class NoSystemTextJsonAttributesNeededAttribute : Attribute
+    {
+        public NoSystemTextJsonAttributesNeededAttribute(string reason)
+        {
+            this.Reason = reason;
+        }
+
+        public string Reason { get; }
+    }
+}
diff --git a/src/Stripe.net/Infrastructure/Public/AppInfo.cs b/src/Stripe.net/Infrastructure/Public/AppInfo.cs
index 6dc2697262..98c4655a97 100644
--- a/src/Stripe.net/Infrastructure/Public/AppInfo.cs
+++ b/src/Stripe.net/Infrastructure/Public/AppInfo.cs
@@ -2,6 +2,9 @@ namespace Stripe
 {
     using System.Text;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// Contains information about the "app" which this integration belongs to. This should be
@@ -11,20 +14,32 @@ public class AppInfo
     {
         /// <summary>Gets or sets the name of your application (e.g. <c>"MyAwesomeApp"</c>).</summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// Gets or sets your Stripe Partner ID (e.g. <c>"pp_partner_1234"</c>), if you have one.
         /// </summary>
         [JsonProperty("partner_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("partner_id")]
+#endif
         public string PartnerId { get; set; }
 
         /// <summary>Gets or sets the version of your application (e.g. <c>"1.2.34"</c>).</summary>
         [JsonProperty("version")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("version")]
+#endif
         public string Version { get; set; }
 
         /// <summary>Gets or sets the website for your application (e.g. <c>"https://myawesomeapp.info"</c>).</summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
 
         /// <summary>
diff --git a/src/Stripe.net/Infrastructure/Public/RequestTelemetry.cs b/src/Stripe.net/Infrastructure/Public/RequestTelemetry.cs
index 49c6bdd242..184628b8b2 100644
--- a/src/Stripe.net/Infrastructure/Public/RequestTelemetry.cs
+++ b/src/Stripe.net/Infrastructure/Public/RequestTelemetry.cs
@@ -6,6 +6,10 @@ namespace Stripe
     using System.Linq;
     using System.Net.Http;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
+
     using Stripe.Infrastructure;
 
     /// <summary>
@@ -90,18 +94,30 @@ public void MaybeEnqueueMetrics(HttpResponseMessage response, TimeSpan duration,
         private class ClientTelemetryPayload
         {
             [JsonProperty("last_request_metrics")]
+#if NET6_0_OR_GREATER
+            [STJS.JsonPropertyName("last_request_metrics")]
+#endif
             public RequestMetrics LastRequestMetrics { get; set; }
         }
 
         private class RequestMetrics
         {
             [JsonProperty("request_id")]
+#if NET6_0_OR_GREATER
+            [STJS.JsonPropertyName("request_id")]
+#endif
             public string RequestId { get; set; }
 
             [JsonProperty("request_duration_ms")]
+#if NET6_0_OR_GREATER
+            [STJS.JsonPropertyName("request_duration_ms")]
+#endif
             public long RequestDurationMs { get; set; }
 
             [JsonProperty("usage")]
+#if NET6_0_OR_GREATER
+            [STJS.JsonPropertyName("usage")]
+#endif
             public List<string> Usage { get; set; }
         }
     }
diff --git a/src/Stripe.net/Infrastructure/Public/StripeTypeRegistry.cs b/src/Stripe.net/Infrastructure/Public/StripeTypeRegistry.cs
index f7010fe317..76424938f7 100644
--- a/src/Stripe.net/Infrastructure/Public/StripeTypeRegistry.cs
+++ b/src/Stripe.net/Infrastructure/Public/StripeTypeRegistry.cs
@@ -179,10 +179,7 @@ public static class StripeTypeRegistry
             {
                 // V2ObjectsToTypes: The beginning of the section generated from our OpenAPI spec
                 { "v2.billing.meter_event", typeof(V2.Billing.MeterEvent) },
-                {
-                    "v2.billing.meter_event_adjustment", typeof(
-                    V2.Billing.MeterEventAdjustment)
-                },
+                { "v2.billing.meter_event_adjustment", typeof(V2.Billing.MeterEventAdjustment) },
                 { "v2.billing.meter_event_session", typeof(V2.Billing.MeterEventSession) },
                 { "v2.core.event", typeof(V2.Event) },
                 { "v2.core.event_destination", typeof(V2.EventDestination) },
diff --git a/src/Stripe.net/Infrastructure/Public/ThinEvent.cs b/src/Stripe.net/Infrastructure/Public/ThinEvent.cs
index bc01ca674c..6bf764de48 100644
--- a/src/Stripe.net/Infrastructure/Public/ThinEvent.cs
+++ b/src/Stripe.net/Infrastructure/Public/ThinEvent.cs
@@ -2,6 +2,10 @@ namespace Stripe
 {
     using System;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
+
     using Stripe.V2;
 
     /// <summary>
@@ -14,24 +18,36 @@ public class ThinEvent
         /// Unique identifier for the event.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; internal set; }
 
         /// <summary>
         /// The type of the event.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; internal set; }
 
         /// <summary>
         /// Time at which the object was created.
         /// </summary>
         [JsonProperty("created")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+#endif
         public DateTime Created { get; internal set; }
 
         /// <summary>
         /// Livemode indicates if the event is from a production(true) or test(false) account.
         /// </summary>
         [JsonProperty("livemode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("livemode")]
+#endif
         public bool Livemode { get; internal set; }
 
 #nullable enable
@@ -39,18 +55,27 @@ public class ThinEvent
         /// [Optional] Reason for the event.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public EventReason? Reason { get; internal set; }
 
         /// <summary>
         /// [Optional] Authentication context needed to fetch the event or related object.
         /// </summary>
         [JsonProperty("context")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("context")]
+#endif
         public string? Context { get; internal set; }
 
         /// <summary>
         /// [Optional] Object containing the reference to API resource relevant to the event.
         /// </summary>
         [JsonProperty("related_object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("related_object")]
+#endif
         public ThinEventRelatedObject? RelatedObject { get; internal set; }
     }
 }
diff --git a/src/Stripe.net/Infrastructure/Public/ThinEventRelatedObject.cs b/src/Stripe.net/Infrastructure/Public/ThinEventRelatedObject.cs
index 3f7ad1e1c7..c60391743c 100644
--- a/src/Stripe.net/Infrastructure/Public/ThinEventRelatedObject.cs
+++ b/src/Stripe.net/Infrastructure/Public/ThinEventRelatedObject.cs
@@ -3,16 +3,28 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ThinEventRelatedObject
     {
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; internal set; }
 
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; internal set; }
 
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; internal set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountCapabilities/AccountCapabilityService.cs b/src/Stripe.net/Services/AccountCapabilities/AccountCapabilityService.cs
index f49bf98ede..73d7e677d3 100644
--- a/src/Stripe.net/Services/AccountCapabilities/AccountCapabilityService.cs
+++ b/src/Stripe.net/Services/AccountCapabilities/AccountCapabilityService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class AccountCapabilityService : ServiceNested<Capability>,
+    public class AccountCapabilityService : Service,
         INestedListable<Capability, AccountCapabilityListOptions>,
         INestedRetrievable<Capability, AccountCapabilityGetOptions>,
         INestedUpdatable<Capability, AccountCapabilityUpdateOptions>
diff --git a/src/Stripe.net/Services/AccountCapabilities/AccountCapabilityUpdateOptions.cs b/src/Stripe.net/Services/AccountCapabilities/AccountCapabilityUpdateOptions.cs
index cb65f445ba..2cde2282f3 100644
--- a/src/Stripe.net/Services/AccountCapabilities/AccountCapabilityUpdateOptions.cs
+++ b/src/Stripe.net/Services/AccountCapabilities/AccountCapabilityUpdateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilityUpdateOptions : BaseOptions
     {
@@ -15,6 +18,9 @@ public class AccountCapabilityUpdateOptions : BaseOptions
         /// permanent capability returns an error.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountBankAccountOptions.cs b/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountBankAccountOptions.cs
index 0cbdda6263..102615c397 100644
--- a/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountBankAccountOptions.cs
+++ b/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountBankAccountOptions.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountExternalAccountBankAccountOptions : INestedOptions, IHasObject
     {
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; } = "bank_account";
 
         /// <summary>
@@ -13,6 +19,9 @@ public class AccountExternalAccountBankAccountOptions : INestedOptions, IHasObje
         /// when attaching the bank account to a <c>Customer</c> object.
         /// </summary>
         [JsonProperty("account_holder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_name")]
+#endif
         public string AccountHolderName { get; set; }
 
         /// <summary>
@@ -22,18 +31,27 @@ public class AccountExternalAccountBankAccountOptions : INestedOptions, IHasObje
         /// One of: <c>company</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("account_holder_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_type")]
+#endif
         public string AccountHolderType { get; set; }
 
         /// <summary>
         /// The account number for the bank account, in string form. Must be a checking account.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
         /// The country in which the bank account is located.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -41,6 +59,9 @@ public class AccountExternalAccountBankAccountOptions : INestedOptions, IHasObje
         /// href="docs/payouts">Stripe supports.</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -50,6 +71,9 @@ public class AccountExternalAccountBankAccountOptions : INestedOptions, IHasObje
         /// for<c>account_number</c>, this field is not required.
         /// </summary>
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountCardOptions.cs b/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountCardOptions.cs
index 4a28be8ad6..03fadcbd36 100644
--- a/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountCardOptions.cs
+++ b/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountCardOptions.cs
@@ -3,46 +3,88 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountExternalAccountCardOptions : INestedOptions, IHasMetadata, IHasObject
     {
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; } = "card";
 
         [JsonProperty("address_city")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_city")]
+#endif
         public string AddressCity { get; set; }
 
         [JsonProperty("address_country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_country")]
+#endif
         public string AddressCountry { get; set; }
 
         [JsonProperty("address_line1")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_line1")]
+#endif
         public string AddressLine1 { get; set; }
 
         [JsonProperty("address_line2")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_line2")]
+#endif
         public string AddressLine2 { get; set; }
 
         [JsonProperty("address_state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_state")]
+#endif
         public string AddressState { get; set; }
 
         [JsonProperty("address_zip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_zip")]
+#endif
         public string AddressZip { get; set; }
 
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         [JsonProperty("cvc")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cvc")]
+#endif
         public string Cvc { get; set; }
 
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public long? ExpMonth { get; set; }
 
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public long? ExpYear { get; set; }
 
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         [JsonProperty("number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("number")]
+#endif
         public string Number { get; set; }
 
         /// <summary>
@@ -51,6 +93,9 @@ public class AccountExternalAccountCardOptions : INestedOptions, IHasMetadata, I
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountCardTokenOptions.cs b/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountCardTokenOptions.cs
index 431f235177..1200f7bc47 100644
--- a/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountCardTokenOptions.cs
+++ b/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountCardTokenOptions.cs
@@ -2,16 +2,28 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountExternalAccountCardTokenOptions : INestedOptions, IHasObject
     {
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; } = "card";
 
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         [JsonProperty("token")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("token")]
+#endif
         public string Token { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountCreateOptions.cs b/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountCreateOptions.cs
index 04139de9cc..a8b771bfd4 100644
--- a/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountCreateOptions.cs
+++ b/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountCreateOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountExternalAccountCreateOptions : BaseOptions, IHasMetadata
     {
@@ -12,6 +15,9 @@ public class AccountExternalAccountCreateOptions : BaseOptions, IHasMetadata
         /// account becomes the default external account for its currency.
         /// </summary>
         [JsonProperty("default_for_currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_for_currency")]
+#endif
         public bool? DefaultForCurrency { get; set; }
 
         /// <summary>
@@ -19,6 +25,10 @@ public class AccountExternalAccountCreateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("external_account")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("external_account")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<string, AccountExternalAccountCardOptions, AccountExternalAccountBankAccountOptions, AccountExternalAccountCardTokenOptions> ExternalAccount { get; set; }
 
         /// <summary>
@@ -28,6 +38,9 @@ public class AccountExternalAccountCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountDocumentsBankAccountOwnershipVerificationOptions.cs b/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountDocumentsBankAccountOwnershipVerificationOptions.cs
index 087a11362a..07f925ff63 100644
--- a/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountDocumentsBankAccountOwnershipVerificationOptions.cs
+++ b/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountDocumentsBankAccountOwnershipVerificationOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountExternalAccountDocumentsBankAccountOwnershipVerificationOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class AccountExternalAccountDocumentsBankAccountOwnershipVerificationOpti
         /// value of <c>account_requirement</c>.
         /// </summary>
         [JsonProperty("files")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("files")]
+#endif
         public List<string> Files { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountDocumentsOptions.cs b/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountDocumentsOptions.cs
index fe5204684a..419ccf9561 100644
--- a/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountDocumentsOptions.cs
+++ b/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountDocumentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountExternalAccountDocumentsOptions : INestedOptions
     {
@@ -13,6 +16,9 @@ public class AccountExternalAccountDocumentsOptions : INestedOptions
         /// or a check.
         /// </summary>
         [JsonProperty("bank_account_ownership_verification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_account_ownership_verification")]
+#endif
         public AccountExternalAccountDocumentsBankAccountOwnershipVerificationOptions BankAccountOwnershipVerification { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountListOptions.cs b/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountListOptions.cs
index 18842c21fa..a9972450f6 100644
--- a/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountListOptions.cs
+++ b/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountExternalAccountListOptions : ListOptions, IHasObject
     {
@@ -10,6 +13,9 @@ public class AccountExternalAccountListOptions : ListOptions, IHasObject
         /// One of: <c>bank_account</c>, or <c>card</c>.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountService.cs b/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountService.cs
index 50cc417a49..30f8d6a447 100644
--- a/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountService.cs
+++ b/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class AccountExternalAccountService : ServiceNested<IExternalAccount>,
+    public class AccountExternalAccountService : Service,
         INestedCreatable<IExternalAccount, AccountExternalAccountCreateOptions>,
         INestedDeletable<IExternalAccount, AccountExternalAccountDeleteOptions>,
         INestedListable<IExternalAccount, AccountExternalAccountListOptions>,
diff --git a/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountUpdateOptions.cs b/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountUpdateOptions.cs
index cec2bd8da1..354ba24e52 100644
--- a/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountUpdateOptions.cs
+++ b/src/Stripe.net/Services/AccountExternalAccounts/AccountExternalAccountUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountExternalAccountUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -10,6 +13,9 @@ public class AccountExternalAccountUpdateOptions : BaseOptions, IHasMetadata
         /// The name of the person or business that owns the bank account.
         /// </summary>
         [JsonProperty("account_holder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_name")]
+#endif
         public string AccountHolderName { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class AccountExternalAccountUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>company</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("account_holder_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_type")]
+#endif
         public string AccountHolderType { get; set; }
 
         /// <summary>
@@ -26,66 +35,99 @@ public class AccountExternalAccountUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>checking</c>, <c>futsu</c>, <c>savings</c>, or <c>toza</c>.
         /// </summary>
         [JsonProperty("account_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_type")]
+#endif
         public string AccountType { get; set; }
 
         /// <summary>
         /// City/District/Suburb/Town/Village.
         /// </summary>
         [JsonProperty("address_city")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_city")]
+#endif
         public string AddressCity { get; set; }
 
         /// <summary>
         /// Billing address country, if provided when creating card.
         /// </summary>
         [JsonProperty("address_country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_country")]
+#endif
         public string AddressCountry { get; set; }
 
         /// <summary>
         /// Address line 1 (Street address/PO Box/Company name).
         /// </summary>
         [JsonProperty("address_line1")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_line1")]
+#endif
         public string AddressLine1 { get; set; }
 
         /// <summary>
         /// Address line 2 (Apartment/Suite/Unit/Building).
         /// </summary>
         [JsonProperty("address_line2")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_line2")]
+#endif
         public string AddressLine2 { get; set; }
 
         /// <summary>
         /// State/County/Province/Region.
         /// </summary>
         [JsonProperty("address_state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_state")]
+#endif
         public string AddressState { get; set; }
 
         /// <summary>
         /// ZIP or postal code.
         /// </summary>
         [JsonProperty("address_zip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_zip")]
+#endif
         public string AddressZip { get; set; }
 
         /// <summary>
         /// When set to true, this becomes the default external account for its currency.
         /// </summary>
         [JsonProperty("default_for_currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_for_currency")]
+#endif
         public bool? DefaultForCurrency { get; set; }
 
         /// <summary>
         /// Documents that may be submitted to satisfy various informational requests.
         /// </summary>
         [JsonProperty("documents")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("documents")]
+#endif
         public AccountExternalAccountDocumentsOptions Documents { get; set; }
 
         /// <summary>
         /// Two digit number representing the card’s expiration month.
         /// </summary>
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public string ExpMonth { get; set; }
 
         /// <summary>
         /// Four digit number representing the card’s expiration year.
         /// </summary>
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public string ExpYear { get; set; }
 
         /// <summary>
@@ -95,12 +137,18 @@ public class AccountExternalAccountUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Cardholder name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountLinks/AccountLinkCollectionOptionsOptions.cs b/src/Stripe.net/Services/AccountLinks/AccountLinkCollectionOptionsOptions.cs
index f5470213c5..ea26950998 100644
--- a/src/Stripe.net/Services/AccountLinks/AccountLinkCollectionOptionsOptions.cs
+++ b/src/Stripe.net/Services/AccountLinks/AccountLinkCollectionOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountLinkCollectionOptionsOptions : INestedOptions
     {
@@ -13,6 +16,9 @@ public class AccountLinkCollectionOptionsOptions : INestedOptions
         /// One of: <c>currently_due</c>, or <c>eventually_due</c>.
         /// </summary>
         [JsonProperty("fields")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fields")]
+#endif
         public string Fields { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class AccountLinkCollectionOptionsOptions : INestedOptions
         /// One of: <c>include</c>, or <c>omit</c>.
         /// </summary>
         [JsonProperty("future_requirements")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("future_requirements")]
+#endif
         public string FutureRequirements { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountLinks/AccountLinkCreateOptions.cs b/src/Stripe.net/Services/AccountLinks/AccountLinkCreateOptions.cs
index a967f6f79a..c8199f6046 100644
--- a/src/Stripe.net/Services/AccountLinks/AccountLinkCreateOptions.cs
+++ b/src/Stripe.net/Services/AccountLinks/AccountLinkCreateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountLinkCreateOptions : BaseOptions
     {
@@ -9,6 +12,9 @@ public class AccountLinkCreateOptions : BaseOptions
         /// The identifier of the account to create an account link for.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public string Account { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class AccountLinkCreateOptions : BaseOptions
         /// One of: <c>currently_due</c>, or <c>eventually_due</c>.
         /// </summary>
         [JsonProperty("collect")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("collect")]
+#endif
         public string Collect { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class AccountLinkCreateOptions : BaseOptions
         /// Onboarding flow.
         /// </summary>
         [JsonProperty("collection_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("collection_options")]
+#endif
         public AccountLinkCollectionOptionsOptions CollectionOptions { get; set; }
 
         /// <summary>
@@ -34,12 +46,18 @@ public class AccountLinkCreateOptions : BaseOptions
         /// should display a useful error to the user.
         /// </summary>
         [JsonProperty("refresh_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refresh_url")]
+#endif
         public string RefreshUrl { get; set; }
 
         /// <summary>
         /// The URL that the user will be redirected to upon leaving or completing the linked flow.
         /// </summary>
         [JsonProperty("return_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_url")]
+#endif
         public string ReturnUrl { get; set; }
 
         /// <summary>
@@ -48,6 +66,9 @@ public class AccountLinkCreateOptions : BaseOptions
         /// One of: <c>account_onboarding</c>, or <c>account_update</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountLinks/AccountLinkService.cs b/src/Stripe.net/Services/AccountLinks/AccountLinkService.cs
index 631947adda..103702701c 100644
--- a/src/Stripe.net/Services/AccountLinks/AccountLinkService.cs
+++ b/src/Stripe.net/Services/AccountLinks/AccountLinkService.cs
@@ -6,7 +6,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class AccountLinkService : Service<AccountLink>,
+    public class AccountLinkService : Service,
         ICreatable<AccountLink, AccountLinkCreateOptions>
     {
         public AccountLinkService()
diff --git a/src/Stripe.net/Services/AccountLoginLinks/AccountLoginLinkService.cs b/src/Stripe.net/Services/AccountLoginLinks/AccountLoginLinkService.cs
index 1d6c166d1b..ad1ddd223d 100644
--- a/src/Stripe.net/Services/AccountLoginLinks/AccountLoginLinkService.cs
+++ b/src/Stripe.net/Services/AccountLoginLinks/AccountLoginLinkService.cs
@@ -7,7 +7,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class AccountLoginLinkService : ServiceNested<LoginLink>,
+    public class AccountLoginLinkService : Service,
         INestedCreatable<LoginLink, AccountLoginLinkCreateOptions>
     {
         public AccountLoginLinkService()
diff --git a/src/Stripe.net/Services/AccountPersons/AccountPersonAdditionalTosAcceptancesAccountOptions.cs b/src/Stripe.net/Services/AccountPersons/AccountPersonAdditionalTosAcceptancesAccountOptions.cs
index 26eb38bac1..f050d60db6 100644
--- a/src/Stripe.net/Services/AccountPersons/AccountPersonAdditionalTosAcceptancesAccountOptions.cs
+++ b/src/Stripe.net/Services/AccountPersons/AccountPersonAdditionalTosAcceptancesAccountOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountPersonAdditionalTosAcceptancesAccountOptions : INestedOptions
     {
@@ -13,12 +16,19 @@ public class AccountPersonAdditionalTosAcceptancesAccountOptions : INestedOption
         /// </summary>
         [JsonProperty("date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? Date { get; set; }
 
         /// <summary>
         /// The IP address from which the account representative accepted the service agreement.
         /// </summary>
         [JsonProperty("ip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip")]
+#endif
         public string Ip { get; set; }
 
         /// <summary>
@@ -26,6 +36,9 @@ public class AccountPersonAdditionalTosAcceptancesAccountOptions : INestedOption
         /// agreement.
         /// </summary>
         [JsonProperty("user_agent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_agent")]
+#endif
         public string UserAgent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountPersons/AccountPersonAdditionalTosAcceptancesOptions.cs b/src/Stripe.net/Services/AccountPersons/AccountPersonAdditionalTosAcceptancesOptions.cs
index 23ab05be2e..18f135a758 100644
--- a/src/Stripe.net/Services/AccountPersons/AccountPersonAdditionalTosAcceptancesOptions.cs
+++ b/src/Stripe.net/Services/AccountPersons/AccountPersonAdditionalTosAcceptancesOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountPersonAdditionalTosAcceptancesOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class AccountPersonAdditionalTosAcceptancesOptions : INestedOptions
         /// Details on the legal guardian's acceptance of the main Stripe service agreement.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public AccountPersonAdditionalTosAcceptancesAccountOptions Account { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountPersons/AccountPersonCreateOptions.cs b/src/Stripe.net/Services/AccountPersons/AccountPersonCreateOptions.cs
index cd9486f1b9..150558a54b 100644
--- a/src/Stripe.net/Services/AccountPersons/AccountPersonCreateOptions.cs
+++ b/src/Stripe.net/Services/AccountPersons/AccountPersonCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountPersonCreateOptions : BaseOptions, IHasMetadata
     {
@@ -11,72 +14,108 @@ public class AccountPersonCreateOptions : BaseOptions, IHasMetadata
         /// agreements.
         /// </summary>
         [JsonProperty("additional_tos_acceptances")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("additional_tos_acceptances")]
+#endif
         public AccountPersonAdditionalTosAcceptancesOptions AdditionalTosAcceptances { get; set; }
 
         /// <summary>
         /// The person's address.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public AddressOptions Address { get; set; }
 
         /// <summary>
         /// The Kana variation of the person's address (Japan only).
         /// </summary>
         [JsonProperty("address_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_kana")]
+#endif
         public AddressJapanOptions AddressKana { get; set; }
 
         /// <summary>
         /// The Kanji variation of the person's address (Japan only).
         /// </summary>
         [JsonProperty("address_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_kanji")]
+#endif
         public AddressJapanOptions AddressKanji { get; set; }
 
         /// <summary>
         /// The person's date of birth.
         /// </summary>
         [JsonProperty("dob")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dob")]
+#endif
         public AccountPersonDobOptions Dob { get; set; }
 
         /// <summary>
         /// Documents that may be submitted to satisfy various informational requests.
         /// </summary>
         [JsonProperty("documents")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("documents")]
+#endif
         public AccountPersonDocumentsOptions Documents { get; set; }
 
         /// <summary>
         /// The person's email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// The person's first name.
         /// </summary>
         [JsonProperty("first_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_name")]
+#endif
         public string FirstName { get; set; }
 
         /// <summary>
         /// The Kana variation of the person's first name (Japan only).
         /// </summary>
         [JsonProperty("first_name_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_name_kana")]
+#endif
         public string FirstNameKana { get; set; }
 
         /// <summary>
         /// The Kanji variation of the person's first name (Japan only).
         /// </summary>
         [JsonProperty("first_name_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_name_kanji")]
+#endif
         public string FirstNameKanji { get; set; }
 
         /// <summary>
         /// A list of alternate names or aliases that the person is known by.
         /// </summary>
         [JsonProperty("full_name_aliases")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("full_name_aliases")]
+#endif
         public List<string> FullNameAliases { get; set; }
 
         /// <summary>
         /// The person's gender (International regulations require either "male" or "female").
         /// </summary>
         [JsonProperty("gender")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gender")]
+#endif
         public string Gender { get; set; }
 
         /// <summary>
@@ -87,6 +126,9 @@ public class AccountPersonCreateOptions : BaseOptions, IHasMetadata
         /// Stripe.js</a>.
         /// </summary>
         [JsonProperty("id_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id_number")]
+#endif
         public string IdNumber { get; set; }
 
         /// <summary>
@@ -97,30 +139,45 @@ public class AccountPersonCreateOptions : BaseOptions, IHasMetadata
         /// Stripe.js</a>.
         /// </summary>
         [JsonProperty("id_number_secondary")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id_number_secondary")]
+#endif
         public string IdNumberSecondary { get; set; }
 
         /// <summary>
         /// The person's last name.
         /// </summary>
         [JsonProperty("last_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_name")]
+#endif
         public string LastName { get; set; }
 
         /// <summary>
         /// The Kana variation of the person's last name (Japan only).
         /// </summary>
         [JsonProperty("last_name_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_name_kana")]
+#endif
         public string LastNameKana { get; set; }
 
         /// <summary>
         /// The Kanji variation of the person's last name (Japan only).
         /// </summary>
         [JsonProperty("last_name_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_name_kanji")]
+#endif
         public string LastNameKanji { get; set; }
 
         /// <summary>
         /// The person's maiden name.
         /// </summary>
         [JsonProperty("maiden_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("maiden_name")]
+#endif
         public string MaidenName { get; set; }
 
         /// <summary>
@@ -130,6 +187,9 @@ public class AccountPersonCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -138,6 +198,9 @@ public class AccountPersonCreateOptions : BaseOptions, IHasMetadata
         /// if unavailable.
         /// </summary>
         [JsonProperty("nationality")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("nationality")]
+#endif
         public string Nationality { get; set; }
 
         /// <summary>
@@ -145,44 +208,66 @@ public class AccountPersonCreateOptions : BaseOptions, IHasMetadata
         /// securely provide details to the person.
         /// </summary>
         [JsonProperty("person_token")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("person_token")]
+#endif
         public string PersonToken { get; set; }
 
         /// <summary>
         /// The person's phone number.
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
 
         /// <summary>
         /// Indicates if the person or any of their representatives, family members, or other
         /// closely related persons, declares that they hold or have held an important public job or
         /// function, in any jurisdiction.
+        /// One of: <c>existing</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("political_exposure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("political_exposure")]
+#endif
         public string PoliticalExposure { get; set; }
 
         /// <summary>
         /// The person's registered address.
         /// </summary>
         [JsonProperty("registered_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("registered_address")]
+#endif
         public AddressOptions RegisteredAddress { get; set; }
 
         /// <summary>
         /// The relationship that this person has with the account's legal entity.
         /// </summary>
         [JsonProperty("relationship")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("relationship")]
+#endif
         public AccountPersonRelationshipOptions Relationship { get; set; }
 
         /// <summary>
         /// The last four digits of the person's Social Security number (U.S. only).
         /// </summary>
         [JsonProperty("ssn_last_4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ssn_last_4")]
+#endif
         public string SsnLast4 { get; set; }
 
         /// <summary>
         /// The person's verification status.
         /// </summary>
         [JsonProperty("verification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification")]
+#endif
         public AccountPersonVerificationOptions Verification { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountPersons/AccountPersonDobOptions.cs b/src/Stripe.net/Services/AccountPersons/AccountPersonDobOptions.cs
index e17819f479..ebe4dec184 100644
--- a/src/Stripe.net/Services/AccountPersons/AccountPersonDobOptions.cs
+++ b/src/Stripe.net/Services/AccountPersons/AccountPersonDobOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountPersonDobOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class AccountPersonDobOptions : INestedOptions
         /// The day of birth, between 1 and 31.
         /// </summary>
         [JsonProperty("day")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("day")]
+#endif
         public long? Day { get; set; }
 
         /// <summary>
         /// The month of birth, between 1 and 12.
         /// </summary>
         [JsonProperty("month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("month")]
+#endif
         public long? Month { get; set; }
 
         /// <summary>
         /// The four-digit year of birth.
         /// </summary>
         [JsonProperty("year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("year")]
+#endif
         public long? Year { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountPersons/AccountPersonDocumentsCompanyAuthorizationOptions.cs b/src/Stripe.net/Services/AccountPersons/AccountPersonDocumentsCompanyAuthorizationOptions.cs
index 454e3f3b97..7c74aec4bc 100644
--- a/src/Stripe.net/Services/AccountPersons/AccountPersonDocumentsCompanyAuthorizationOptions.cs
+++ b/src/Stripe.net/Services/AccountPersons/AccountPersonDocumentsCompanyAuthorizationOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountPersonDocumentsCompanyAuthorizationOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class AccountPersonDocumentsCompanyAuthorizationOptions : INestedOptions
         /// value of <c>account_requirement</c>.
         /// </summary>
         [JsonProperty("files")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("files")]
+#endif
         public List<string> Files { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountPersons/AccountPersonDocumentsOptions.cs b/src/Stripe.net/Services/AccountPersons/AccountPersonDocumentsOptions.cs
index ee18dc6b41..d22c6ef3ac 100644
--- a/src/Stripe.net/Services/AccountPersons/AccountPersonDocumentsOptions.cs
+++ b/src/Stripe.net/Services/AccountPersons/AccountPersonDocumentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountPersonDocumentsOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class AccountPersonDocumentsOptions : INestedOptions
         /// the company.
         /// </summary>
         [JsonProperty("company_authorization")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("company_authorization")]
+#endif
         public AccountPersonDocumentsCompanyAuthorizationOptions CompanyAuthorization { get; set; }
 
         /// <summary>
         /// One or more documents showing the person's passport page with photo and personal data.
         /// </summary>
         [JsonProperty("passport")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("passport")]
+#endif
         public AccountPersonDocumentsPassportOptions Passport { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class AccountPersonDocumentsOptions : INestedOptions
         /// they are residing.
         /// </summary>
         [JsonProperty("visa")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("visa")]
+#endif
         public AccountPersonDocumentsVisaOptions Visa { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountPersons/AccountPersonDocumentsPassportOptions.cs b/src/Stripe.net/Services/AccountPersons/AccountPersonDocumentsPassportOptions.cs
index 0de955d482..ddbe761237 100644
--- a/src/Stripe.net/Services/AccountPersons/AccountPersonDocumentsPassportOptions.cs
+++ b/src/Stripe.net/Services/AccountPersons/AccountPersonDocumentsPassportOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountPersonDocumentsPassportOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class AccountPersonDocumentsPassportOptions : INestedOptions
         /// value of <c>account_requirement</c>.
         /// </summary>
         [JsonProperty("files")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("files")]
+#endif
         public List<string> Files { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountPersons/AccountPersonDocumentsVisaOptions.cs b/src/Stripe.net/Services/AccountPersons/AccountPersonDocumentsVisaOptions.cs
index 3ac6ad2ae5..02430d47f4 100644
--- a/src/Stripe.net/Services/AccountPersons/AccountPersonDocumentsVisaOptions.cs
+++ b/src/Stripe.net/Services/AccountPersons/AccountPersonDocumentsVisaOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountPersonDocumentsVisaOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class AccountPersonDocumentsVisaOptions : INestedOptions
         /// value of <c>account_requirement</c>.
         /// </summary>
         [JsonProperty("files")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("files")]
+#endif
         public List<string> Files { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountPersons/AccountPersonListOptions.cs b/src/Stripe.net/Services/AccountPersons/AccountPersonListOptions.cs
index 79c30c8b0c..bb28549d78 100644
--- a/src/Stripe.net/Services/AccountPersons/AccountPersonListOptions.cs
+++ b/src/Stripe.net/Services/AccountPersons/AccountPersonListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountPersonListOptions : ListOptions
     {
@@ -10,6 +13,9 @@ public class AccountPersonListOptions : ListOptions
         /// account's company.
         /// </summary>
         [JsonProperty("relationship")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("relationship")]
+#endif
         public AccountPersonRelationshipOptions Relationship { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountPersons/AccountPersonRelationshipOptions.cs b/src/Stripe.net/Services/AccountPersons/AccountPersonRelationshipOptions.cs
index 16b0d77960..0e77d1f60a 100644
--- a/src/Stripe.net/Services/AccountPersons/AccountPersonRelationshipOptions.cs
+++ b/src/Stripe.net/Services/AccountPersons/AccountPersonRelationshipOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountPersonRelationshipOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class AccountPersonRelationshipOptions : INestedOptions
         /// the account's representative.
         /// </summary>
         [JsonProperty("authorizer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("authorizer")]
+#endif
         public bool? Authorizer { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class AccountPersonRelationshipOptions : INestedOptions
         /// meets its regulatory obligations.
         /// </summary>
         [JsonProperty("director")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("director")]
+#endif
         public bool? Director { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class AccountPersonRelationshipOptions : INestedOptions
         /// the account's company.
         /// </summary>
         [JsonProperty("executive")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("executive")]
+#endif
         public bool? Executive { get; set; }
 
         /// <summary>
@@ -32,6 +44,9 @@ public class AccountPersonRelationshipOptions : INestedOptions
         /// guardians of the account's representative.
         /// </summary>
         [JsonProperty("legal_guardian")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("legal_guardian")]
+#endif
         public bool? LegalGuardian { get; set; }
 
         /// <summary>
@@ -39,12 +54,18 @@ public class AccountPersonRelationshipOptions : INestedOptions
         /// account's company.
         /// </summary>
         [JsonProperty("owner")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("owner")]
+#endif
         public bool? Owner { get; set; }
 
         /// <summary>
         /// The percent owned by the person of the account's legal entity.
         /// </summary>
         [JsonProperty("percent_ownership")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percent_ownership")]
+#endif
         public decimal? PercentOwnership { get; set; }
 
         /// <summary>
@@ -55,12 +76,18 @@ public class AccountPersonRelationshipOptions : INestedOptions
         /// responsible for opening the account.
         /// </summary>
         [JsonProperty("representative")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("representative")]
+#endif
         public bool? Representative { get; set; }
 
         /// <summary>
         /// The person's title (e.g., CEO, Support Engineer).
         /// </summary>
         [JsonProperty("title")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("title")]
+#endif
         public string Title { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountPersons/AccountPersonService.cs b/src/Stripe.net/Services/AccountPersons/AccountPersonService.cs
index 422c2b52ae..e7459fbf4f 100644
--- a/src/Stripe.net/Services/AccountPersons/AccountPersonService.cs
+++ b/src/Stripe.net/Services/AccountPersons/AccountPersonService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class AccountPersonService : ServiceNested<Person>,
+    public class AccountPersonService : Service,
         INestedCreatable<Person, AccountPersonCreateOptions>,
         INestedDeletable<Person, AccountPersonDeleteOptions>,
         INestedListable<Person, AccountPersonListOptions>,
diff --git a/src/Stripe.net/Services/AccountPersons/AccountPersonUpdateOptions.cs b/src/Stripe.net/Services/AccountPersons/AccountPersonUpdateOptions.cs
index 3eb2b3a6d2..b6186fe25d 100644
--- a/src/Stripe.net/Services/AccountPersons/AccountPersonUpdateOptions.cs
+++ b/src/Stripe.net/Services/AccountPersons/AccountPersonUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountPersonUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -11,72 +14,108 @@ public class AccountPersonUpdateOptions : BaseOptions, IHasMetadata
         /// agreements.
         /// </summary>
         [JsonProperty("additional_tos_acceptances")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("additional_tos_acceptances")]
+#endif
         public AccountPersonAdditionalTosAcceptancesOptions AdditionalTosAcceptances { get; set; }
 
         /// <summary>
         /// The person's address.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public AddressOptions Address { get; set; }
 
         /// <summary>
         /// The Kana variation of the person's address (Japan only).
         /// </summary>
         [JsonProperty("address_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_kana")]
+#endif
         public AddressJapanOptions AddressKana { get; set; }
 
         /// <summary>
         /// The Kanji variation of the person's address (Japan only).
         /// </summary>
         [JsonProperty("address_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_kanji")]
+#endif
         public AddressJapanOptions AddressKanji { get; set; }
 
         /// <summary>
         /// The person's date of birth.
         /// </summary>
         [JsonProperty("dob")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dob")]
+#endif
         public AccountPersonDobOptions Dob { get; set; }
 
         /// <summary>
         /// Documents that may be submitted to satisfy various informational requests.
         /// </summary>
         [JsonProperty("documents")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("documents")]
+#endif
         public AccountPersonDocumentsOptions Documents { get; set; }
 
         /// <summary>
         /// The person's email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// The person's first name.
         /// </summary>
         [JsonProperty("first_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_name")]
+#endif
         public string FirstName { get; set; }
 
         /// <summary>
         /// The Kana variation of the person's first name (Japan only).
         /// </summary>
         [JsonProperty("first_name_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_name_kana")]
+#endif
         public string FirstNameKana { get; set; }
 
         /// <summary>
         /// The Kanji variation of the person's first name (Japan only).
         /// </summary>
         [JsonProperty("first_name_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_name_kanji")]
+#endif
         public string FirstNameKanji { get; set; }
 
         /// <summary>
         /// A list of alternate names or aliases that the person is known by.
         /// </summary>
         [JsonProperty("full_name_aliases")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("full_name_aliases")]
+#endif
         public List<string> FullNameAliases { get; set; }
 
         /// <summary>
         /// The person's gender (International regulations require either "male" or "female").
         /// </summary>
         [JsonProperty("gender")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gender")]
+#endif
         public string Gender { get; set; }
 
         /// <summary>
@@ -87,6 +126,9 @@ public class AccountPersonUpdateOptions : BaseOptions, IHasMetadata
         /// Stripe.js</a>.
         /// </summary>
         [JsonProperty("id_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id_number")]
+#endif
         public string IdNumber { get; set; }
 
         /// <summary>
@@ -97,30 +139,45 @@ public class AccountPersonUpdateOptions : BaseOptions, IHasMetadata
         /// Stripe.js</a>.
         /// </summary>
         [JsonProperty("id_number_secondary")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id_number_secondary")]
+#endif
         public string IdNumberSecondary { get; set; }
 
         /// <summary>
         /// The person's last name.
         /// </summary>
         [JsonProperty("last_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_name")]
+#endif
         public string LastName { get; set; }
 
         /// <summary>
         /// The Kana variation of the person's last name (Japan only).
         /// </summary>
         [JsonProperty("last_name_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_name_kana")]
+#endif
         public string LastNameKana { get; set; }
 
         /// <summary>
         /// The Kanji variation of the person's last name (Japan only).
         /// </summary>
         [JsonProperty("last_name_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_name_kanji")]
+#endif
         public string LastNameKanji { get; set; }
 
         /// <summary>
         /// The person's maiden name.
         /// </summary>
         [JsonProperty("maiden_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("maiden_name")]
+#endif
         public string MaidenName { get; set; }
 
         /// <summary>
@@ -130,6 +187,9 @@ public class AccountPersonUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -138,6 +198,9 @@ public class AccountPersonUpdateOptions : BaseOptions, IHasMetadata
         /// if unavailable.
         /// </summary>
         [JsonProperty("nationality")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("nationality")]
+#endif
         public string Nationality { get; set; }
 
         /// <summary>
@@ -145,44 +208,66 @@ public class AccountPersonUpdateOptions : BaseOptions, IHasMetadata
         /// securely provide details to the person.
         /// </summary>
         [JsonProperty("person_token")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("person_token")]
+#endif
         public string PersonToken { get; set; }
 
         /// <summary>
         /// The person's phone number.
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
 
         /// <summary>
         /// Indicates if the person or any of their representatives, family members, or other
         /// closely related persons, declares that they hold or have held an important public job or
         /// function, in any jurisdiction.
+        /// One of: <c>existing</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("political_exposure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("political_exposure")]
+#endif
         public string PoliticalExposure { get; set; }
 
         /// <summary>
         /// The person's registered address.
         /// </summary>
         [JsonProperty("registered_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("registered_address")]
+#endif
         public AddressOptions RegisteredAddress { get; set; }
 
         /// <summary>
         /// The relationship that this person has with the account's legal entity.
         /// </summary>
         [JsonProperty("relationship")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("relationship")]
+#endif
         public AccountPersonRelationshipOptions Relationship { get; set; }
 
         /// <summary>
         /// The last four digits of the person's Social Security number (U.S. only).
         /// </summary>
         [JsonProperty("ssn_last_4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ssn_last_4")]
+#endif
         public string SsnLast4 { get; set; }
 
         /// <summary>
         /// The person's verification status.
         /// </summary>
         [JsonProperty("verification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification")]
+#endif
         public AccountPersonVerificationOptions Verification { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountPersons/AccountPersonVerificationAdditionalDocumentOptions.cs b/src/Stripe.net/Services/AccountPersons/AccountPersonVerificationAdditionalDocumentOptions.cs
index 42fdae74e6..73ded0f35b 100644
--- a/src/Stripe.net/Services/AccountPersons/AccountPersonVerificationAdditionalDocumentOptions.cs
+++ b/src/Stripe.net/Services/AccountPersons/AccountPersonVerificationAdditionalDocumentOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountPersonVerificationAdditionalDocumentOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class AccountPersonVerificationAdditionalDocumentOptions : INestedOptions
         /// and less than 10 MB in size.
         /// </summary>
         [JsonProperty("back")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("back")]
+#endif
         public string Back { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class AccountPersonVerificationAdditionalDocumentOptions : INestedOptions
         /// and less than 10 MB in size.
         /// </summary>
         [JsonProperty("front")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("front")]
+#endif
         public string Front { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountPersons/AccountPersonVerificationDocumentOptions.cs b/src/Stripe.net/Services/AccountPersons/AccountPersonVerificationDocumentOptions.cs
index aa2e532fba..a7668082ca 100644
--- a/src/Stripe.net/Services/AccountPersons/AccountPersonVerificationDocumentOptions.cs
+++ b/src/Stripe.net/Services/AccountPersons/AccountPersonVerificationDocumentOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountPersonVerificationDocumentOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class AccountPersonVerificationDocumentOptions : INestedOptions
         /// and less than 10 MB in size.
         /// </summary>
         [JsonProperty("back")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("back")]
+#endif
         public string Back { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class AccountPersonVerificationDocumentOptions : INestedOptions
         /// and less than 10 MB in size.
         /// </summary>
         [JsonProperty("front")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("front")]
+#endif
         public string Front { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountPersons/AccountPersonVerificationOptions.cs b/src/Stripe.net/Services/AccountPersons/AccountPersonVerificationOptions.cs
index b5cb9ca950..1c3994abde 100644
--- a/src/Stripe.net/Services/AccountPersons/AccountPersonVerificationOptions.cs
+++ b/src/Stripe.net/Services/AccountPersons/AccountPersonVerificationOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountPersonVerificationOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class AccountPersonVerificationOptions : INestedOptions
         /// well-known utility company.
         /// </summary>
         [JsonProperty("additional_document")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("additional_document")]
+#endif
         public AccountPersonVerificationAdditionalDocumentOptions AdditionalDocument { get; set; }
 
         /// <summary>
         /// An identifying document, either a passport or local ID card.
         /// </summary>
         [JsonProperty("document")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("document")]
+#endif
         public AccountPersonVerificationDocumentOptions Document { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsAccountManagementFeaturesOptions.cs b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsAccountManagementFeaturesOptions.cs
index 91b6163d59..1219065d66 100644
--- a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsAccountManagementFeaturesOptions.cs
+++ b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsAccountManagementFeaturesOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsAccountManagementFeaturesOptions : INestedOptions
     {
@@ -13,6 +16,9 @@ public class AccountSessionComponentsAccountManagementFeaturesOptions : INestedO
         /// <c>disable_stripe_user_authentication</c> defaults to false.
         /// </summary>
         [JsonProperty("disable_stripe_user_authentication")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("disable_stripe_user_authentication")]
+#endif
         public bool? DisableStripeUserAuthentication { get; set; }
 
         /// <summary>
@@ -23,6 +29,9 @@ public class AccountSessionComponentsAccountManagementFeaturesOptions : INestedO
         /// The default value for this feature is <c>true</c>.
         /// </summary>
         [JsonProperty("external_account_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("external_account_collection")]
+#endif
         public bool? ExternalAccountCollection { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsAccountManagementOptions.cs b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsAccountManagementOptions.cs
index 2cb591e3c3..647a7528f5 100644
--- a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsAccountManagementOptions.cs
+++ b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsAccountManagementOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsAccountManagementOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class AccountSessionComponentsAccountManagementOptions : INestedOptions
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
         /// The list of features enabled in the embedded component.
         /// </summary>
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsAccountManagementFeaturesOptions Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsAccountOnboardingFeaturesOptions.cs b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsAccountOnboardingFeaturesOptions.cs
index c2a6acf273..85c35e1b3f 100644
--- a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsAccountOnboardingFeaturesOptions.cs
+++ b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsAccountOnboardingFeaturesOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsAccountOnboardingFeaturesOptions : INestedOptions
     {
@@ -13,6 +16,9 @@ public class AccountSessionComponentsAccountOnboardingFeaturesOptions : INestedO
         /// <c>disable_stripe_user_authentication</c> defaults to false.
         /// </summary>
         [JsonProperty("disable_stripe_user_authentication")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("disable_stripe_user_authentication")]
+#endif
         public bool? DisableStripeUserAuthentication { get; set; }
 
         /// <summary>
@@ -23,6 +29,9 @@ public class AccountSessionComponentsAccountOnboardingFeaturesOptions : INestedO
         /// The default value for this feature is <c>true</c>.
         /// </summary>
         [JsonProperty("external_account_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("external_account_collection")]
+#endif
         public bool? ExternalAccountCollection { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsAccountOnboardingOptions.cs b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsAccountOnboardingOptions.cs
index 8b6e843ae6..95a767942a 100644
--- a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsAccountOnboardingOptions.cs
+++ b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsAccountOnboardingOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsAccountOnboardingOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class AccountSessionComponentsAccountOnboardingOptions : INestedOptions
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
         /// The list of features enabled in the embedded component.
         /// </summary>
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsAccountOnboardingFeaturesOptions Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsBalancesFeaturesOptions.cs b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsBalancesFeaturesOptions.cs
index c86e593081..b81df6af0d 100644
--- a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsBalancesFeaturesOptions.cs
+++ b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsBalancesFeaturesOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsBalancesFeaturesOptions : INestedOptions
     {
@@ -13,6 +16,9 @@ public class AccountSessionComponentsBalancesFeaturesOptions : INestedOptions
         /// <c>disable_stripe_user_authentication</c> defaults to false.
         /// </summary>
         [JsonProperty("disable_stripe_user_authentication")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("disable_stripe_user_authentication")]
+#endif
         public bool? DisableStripeUserAuthentication { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class AccountSessionComponentsBalancesFeaturesOptions : INestedOptions
         /// Loss Liability, default <c>false</c> otherwise.
         /// </summary>
         [JsonProperty("edit_payout_schedule")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("edit_payout_schedule")]
+#endif
         public bool? EditPayoutSchedule { get; set; }
 
         /// <summary>
@@ -30,6 +39,9 @@ public class AccountSessionComponentsBalancesFeaturesOptions : INestedOptions
         /// The default value for this feature is <c>true</c>.
         /// </summary>
         [JsonProperty("external_account_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("external_account_collection")]
+#endif
         public bool? ExternalAccountCollection { get; set; }
 
         /// <summary>
@@ -37,6 +49,9 @@ public class AccountSessionComponentsBalancesFeaturesOptions : INestedOptions
         /// Liability, default <c>false</c> otherwise.
         /// </summary>
         [JsonProperty("instant_payouts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("instant_payouts")]
+#endif
         public bool? InstantPayouts { get; set; }
 
         /// <summary>
@@ -44,6 +59,9 @@ public class AccountSessionComponentsBalancesFeaturesOptions : INestedOptions
         /// Liability, default <c>false</c> otherwise.
         /// </summary>
         [JsonProperty("standard_payouts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard_payouts")]
+#endif
         public bool? StandardPayouts { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsBalancesOptions.cs b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsBalancesOptions.cs
index 8b55c9849d..54578f6067 100644
--- a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsBalancesOptions.cs
+++ b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsBalancesOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsBalancesOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class AccountSessionComponentsBalancesOptions : INestedOptions
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
         /// The list of features enabled in the embedded component.
         /// </summary>
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsBalancesFeaturesOptions Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsDocumentsOptions.cs b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsDocumentsOptions.cs
index aa94a1c473..af0e67ede5 100644
--- a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsDocumentsOptions.cs
+++ b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsDocumentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsDocumentsOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class AccountSessionComponentsDocumentsOptions : INestedOptions
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
         /// The list of features enabled in the embedded component.
         /// </summary>
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsDocumentsFeaturesOptions Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsFinancialAccountFeaturesOptions.cs b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsFinancialAccountFeaturesOptions.cs
index 930ca72295..583cb57550 100644
--- a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsFinancialAccountFeaturesOptions.cs
+++ b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsFinancialAccountFeaturesOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsFinancialAccountFeaturesOptions : INestedOptions
     {
@@ -13,24 +16,36 @@ public class AccountSessionComponentsFinancialAccountFeaturesOptions : INestedOp
         /// <c>disable_stripe_user_authentication</c> defaults to false.
         /// </summary>
         [JsonProperty("disable_stripe_user_authentication")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("disable_stripe_user_authentication")]
+#endif
         public bool? DisableStripeUserAuthentication { get; set; }
 
         /// <summary>
         /// Whether to allow external accounts to be linked for money transfer.
         /// </summary>
         [JsonProperty("external_account_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("external_account_collection")]
+#endif
         public bool? ExternalAccountCollection { get; set; }
 
         /// <summary>
         /// Whether to allow sending money.
         /// </summary>
         [JsonProperty("send_money")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("send_money")]
+#endif
         public bool? SendMoney { get; set; }
 
         /// <summary>
         /// Whether to allow transferring balance.
         /// </summary>
         [JsonProperty("transfer_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_balance")]
+#endif
         public bool? TransferBalance { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsFinancialAccountOptions.cs b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsFinancialAccountOptions.cs
index f228a1c05f..011bae68e1 100644
--- a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsFinancialAccountOptions.cs
+++ b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsFinancialAccountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsFinancialAccountOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class AccountSessionComponentsFinancialAccountOptions : INestedOptions
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
         /// The list of features enabled in the embedded component.
         /// </summary>
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsFinancialAccountFeaturesOptions Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsFinancialAccountTransactionsFeaturesOptions.cs b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsFinancialAccountTransactionsFeaturesOptions.cs
index 8a3c4e7ed9..61753696eb 100644
--- a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsFinancialAccountTransactionsFeaturesOptions.cs
+++ b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsFinancialAccountTransactionsFeaturesOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsFinancialAccountTransactionsFeaturesOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class AccountSessionComponentsFinancialAccountTransactionsFeaturesOptions
         /// Whether to allow card spend dispute management features.
         /// </summary>
         [JsonProperty("card_spend_dispute_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_spend_dispute_management")]
+#endif
         public bool? CardSpendDisputeManagement { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsFinancialAccountTransactionsOptions.cs b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsFinancialAccountTransactionsOptions.cs
index 23864a5f46..1ee8211b26 100644
--- a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsFinancialAccountTransactionsOptions.cs
+++ b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsFinancialAccountTransactionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsFinancialAccountTransactionsOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class AccountSessionComponentsFinancialAccountTransactionsOptions : INest
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
         /// The list of features enabled in the embedded component.
         /// </summary>
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsFinancialAccountTransactionsFeaturesOptions Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsIssuingCardFeaturesOptions.cs b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsIssuingCardFeaturesOptions.cs
index 19009694b8..ee2123d86f 100644
--- a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsIssuingCardFeaturesOptions.cs
+++ b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsIssuingCardFeaturesOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsIssuingCardFeaturesOptions : INestedOptions
     {
@@ -9,24 +12,36 @@ public class AccountSessionComponentsIssuingCardFeaturesOptions : INestedOptions
         /// Whether to allow card management features.
         /// </summary>
         [JsonProperty("card_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_management")]
+#endif
         public bool? CardManagement { get; set; }
 
         /// <summary>
         /// Whether to allow card spend dispute management features.
         /// </summary>
         [JsonProperty("card_spend_dispute_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_spend_dispute_management")]
+#endif
         public bool? CardSpendDisputeManagement { get; set; }
 
         /// <summary>
         /// Whether to allow cardholder management features.
         /// </summary>
         [JsonProperty("cardholder_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder_management")]
+#endif
         public bool? CardholderManagement { get; set; }
 
         /// <summary>
         /// Whether to allow spend control management features.
         /// </summary>
         [JsonProperty("spend_control_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("spend_control_management")]
+#endif
         public bool? SpendControlManagement { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsIssuingCardOptions.cs b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsIssuingCardOptions.cs
index dc68cfa44d..688afb566f 100644
--- a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsIssuingCardOptions.cs
+++ b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsIssuingCardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsIssuingCardOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class AccountSessionComponentsIssuingCardOptions : INestedOptions
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
         /// The list of features enabled in the embedded component.
         /// </summary>
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsIssuingCardFeaturesOptions Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsIssuingCardsListFeaturesOptions.cs b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsIssuingCardsListFeaturesOptions.cs
index e29f246150..dd3486d9ab 100644
--- a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsIssuingCardsListFeaturesOptions.cs
+++ b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsIssuingCardsListFeaturesOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsIssuingCardsListFeaturesOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class AccountSessionComponentsIssuingCardsListFeaturesOptions : INestedOp
         /// Whether to allow card management features.
         /// </summary>
         [JsonProperty("card_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_management")]
+#endif
         public bool? CardManagement { get; set; }
 
         /// <summary>
         /// Whether to allow card spend dispute management features.
         /// </summary>
         [JsonProperty("card_spend_dispute_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_spend_dispute_management")]
+#endif
         public bool? CardSpendDisputeManagement { get; set; }
 
         /// <summary>
         /// Whether to allow cardholder management features.
         /// </summary>
         [JsonProperty("cardholder_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder_management")]
+#endif
         public bool? CardholderManagement { get; set; }
 
         /// <summary>
@@ -29,12 +41,18 @@ public class AccountSessionComponentsIssuingCardsListFeaturesOptions : INestedOp
         /// requirements are due or change, like custom accounts.
         /// </summary>
         [JsonProperty("disable_stripe_user_authentication")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("disable_stripe_user_authentication")]
+#endif
         public bool? DisableStripeUserAuthentication { get; set; }
 
         /// <summary>
         /// Whether to allow spend control management features.
         /// </summary>
         [JsonProperty("spend_control_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("spend_control_management")]
+#endif
         public bool? SpendControlManagement { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsIssuingCardsListOptions.cs b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsIssuingCardsListOptions.cs
index d22c10a8af..6ae0744174 100644
--- a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsIssuingCardsListOptions.cs
+++ b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsIssuingCardsListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsIssuingCardsListOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class AccountSessionComponentsIssuingCardsListOptions : INestedOptions
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
         /// The list of features enabled in the embedded component.
         /// </summary>
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsIssuingCardsListFeaturesOptions Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsNotificationBannerFeaturesOptions.cs b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsNotificationBannerFeaturesOptions.cs
index a7701e366e..d4ed54cd98 100644
--- a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsNotificationBannerFeaturesOptions.cs
+++ b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsNotificationBannerFeaturesOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsNotificationBannerFeaturesOptions : INestedOptions
     {
@@ -13,6 +16,9 @@ public class AccountSessionComponentsNotificationBannerFeaturesOptions : INested
         /// <c>disable_stripe_user_authentication</c> defaults to false.
         /// </summary>
         [JsonProperty("disable_stripe_user_authentication")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("disable_stripe_user_authentication")]
+#endif
         public bool? DisableStripeUserAuthentication { get; set; }
 
         /// <summary>
@@ -23,6 +29,9 @@ public class AccountSessionComponentsNotificationBannerFeaturesOptions : INested
         /// The default value for this feature is <c>true</c>.
         /// </summary>
         [JsonProperty("external_account_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("external_account_collection")]
+#endif
         public bool? ExternalAccountCollection { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsNotificationBannerOptions.cs b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsNotificationBannerOptions.cs
index a3c8257276..bfc169890c 100644
--- a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsNotificationBannerOptions.cs
+++ b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsNotificationBannerOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsNotificationBannerOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class AccountSessionComponentsNotificationBannerOptions : INestedOptions
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
         /// The list of features enabled in the embedded component.
         /// </summary>
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsNotificationBannerFeaturesOptions Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsOptions.cs b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsOptions.cs
index c85de94e7e..3e9123464f 100644
--- a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsOptions.cs
+++ b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsOptions : INestedOptions
     {
@@ -9,90 +12,135 @@ public class AccountSessionComponentsOptions : INestedOptions
         /// Configuration for the account management embedded component.
         /// </summary>
         [JsonProperty("account_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_management")]
+#endif
         public AccountSessionComponentsAccountManagementOptions AccountManagement { get; set; }
 
         /// <summary>
         /// Configuration for the account onboarding embedded component.
         /// </summary>
         [JsonProperty("account_onboarding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_onboarding")]
+#endif
         public AccountSessionComponentsAccountOnboardingOptions AccountOnboarding { get; set; }
 
         /// <summary>
         /// Configuration for the balances embedded component.
         /// </summary>
         [JsonProperty("balances")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("balances")]
+#endif
         public AccountSessionComponentsBalancesOptions Balances { get; set; }
 
         /// <summary>
         /// Configuration for the documents embedded component.
         /// </summary>
         [JsonProperty("documents")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("documents")]
+#endif
         public AccountSessionComponentsDocumentsOptions Documents { get; set; }
 
         /// <summary>
         /// Configuration for the financial account embedded component.
         /// </summary>
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public AccountSessionComponentsFinancialAccountOptions FinancialAccount { get; set; }
 
         /// <summary>
         /// Configuration for the financial account transactions embedded component.
         /// </summary>
         [JsonProperty("financial_account_transactions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account_transactions")]
+#endif
         public AccountSessionComponentsFinancialAccountTransactionsOptions FinancialAccountTransactions { get; set; }
 
         /// <summary>
         /// Configuration for the issuing card embedded component.
         /// </summary>
         [JsonProperty("issuing_card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuing_card")]
+#endif
         public AccountSessionComponentsIssuingCardOptions IssuingCard { get; set; }
 
         /// <summary>
         /// Configuration for the issuing cards list embedded component.
         /// </summary>
         [JsonProperty("issuing_cards_list")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuing_cards_list")]
+#endif
         public AccountSessionComponentsIssuingCardsListOptions IssuingCardsList { get; set; }
 
         /// <summary>
         /// Configuration for the notification banner embedded component.
         /// </summary>
         [JsonProperty("notification_banner")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("notification_banner")]
+#endif
         public AccountSessionComponentsNotificationBannerOptions NotificationBanner { get; set; }
 
         /// <summary>
         /// Configuration for the payment details embedded component.
         /// </summary>
         [JsonProperty("payment_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_details")]
+#endif
         public AccountSessionComponentsPaymentDetailsOptions PaymentDetails { get; set; }
 
         /// <summary>
         /// Configuration for the payments embedded component.
         /// </summary>
         [JsonProperty("payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payments")]
+#endif
         public AccountSessionComponentsPaymentsOptions Payments { get; set; }
 
         /// <summary>
         /// Configuration for the payouts embedded component.
         /// </summary>
         [JsonProperty("payouts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payouts")]
+#endif
         public AccountSessionComponentsPayoutsOptions Payouts { get; set; }
 
         /// <summary>
         /// Configuration for the payouts list embedded component.
         /// </summary>
         [JsonProperty("payouts_list")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payouts_list")]
+#endif
         public AccountSessionComponentsPayoutsListOptions PayoutsList { get; set; }
 
         /// <summary>
         /// Configuration for the tax registrations embedded component.
         /// </summary>
         [JsonProperty("tax_registrations")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_registrations")]
+#endif
         public AccountSessionComponentsTaxRegistrationsOptions TaxRegistrations { get; set; }
 
         /// <summary>
         /// Configuration for the tax settings embedded component.
         /// </summary>
         [JsonProperty("tax_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_settings")]
+#endif
         public AccountSessionComponentsTaxSettingsOptions TaxSettings { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsPaymentDetailsFeaturesOptions.cs b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsPaymentDetailsFeaturesOptions.cs
index 5e3487a340..3a60210fd0 100644
--- a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsPaymentDetailsFeaturesOptions.cs
+++ b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsPaymentDetailsFeaturesOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsPaymentDetailsFeaturesOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class AccountSessionComponentsPaymentDetailsFeaturesOptions : INestedOpti
         /// default.
         /// </summary>
         [JsonProperty("capture_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_payments")]
+#endif
         public bool? CapturePayments { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class AccountSessionComponentsPaymentDetailsFeaturesOptions : INestedOpti
         /// behalf of them. This is <c>false</c> by default.
         /// </summary>
         [JsonProperty("destination_on_behalf_of_charge_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination_on_behalf_of_charge_management")]
+#endif
         public bool? DestinationOnBehalfOfChargeManagement { get; set; }
 
         /// <summary>
@@ -24,12 +33,18 @@ public class AccountSessionComponentsPaymentDetailsFeaturesOptions : INestedOpti
         /// disputes. This is <c>true</c> by default.
         /// </summary>
         [JsonProperty("dispute_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dispute_management")]
+#endif
         public bool? DisputeManagement { get; set; }
 
         /// <summary>
         /// Whether to allow sending refunds. This is <c>true</c> by default.
         /// </summary>
         [JsonProperty("refund_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_management")]
+#endif
         public bool? RefundManagement { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsPaymentDetailsOptions.cs b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsPaymentDetailsOptions.cs
index 3227b4d168..b497cbd63a 100644
--- a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsPaymentDetailsOptions.cs
+++ b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsPaymentDetailsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsPaymentDetailsOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class AccountSessionComponentsPaymentDetailsOptions : INestedOptions
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
         /// The list of features enabled in the embedded component.
         /// </summary>
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsPaymentDetailsFeaturesOptions Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsPaymentsFeaturesOptions.cs b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsPaymentsFeaturesOptions.cs
index b65c38aee3..e6d3bf810f 100644
--- a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsPaymentsFeaturesOptions.cs
+++ b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsPaymentsFeaturesOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsPaymentsFeaturesOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class AccountSessionComponentsPaymentsFeaturesOptions : INestedOptions
         /// default.
         /// </summary>
         [JsonProperty("capture_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_payments")]
+#endif
         public bool? CapturePayments { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class AccountSessionComponentsPaymentsFeaturesOptions : INestedOptions
         /// behalf of them. This is <c>false</c> by default.
         /// </summary>
         [JsonProperty("destination_on_behalf_of_charge_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination_on_behalf_of_charge_management")]
+#endif
         public bool? DestinationOnBehalfOfChargeManagement { get; set; }
 
         /// <summary>
@@ -24,12 +33,18 @@ public class AccountSessionComponentsPaymentsFeaturesOptions : INestedOptions
         /// disputes. This is <c>true</c> by default.
         /// </summary>
         [JsonProperty("dispute_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dispute_management")]
+#endif
         public bool? DisputeManagement { get; set; }
 
         /// <summary>
         /// Whether to allow sending refunds. This is <c>true</c> by default.
         /// </summary>
         [JsonProperty("refund_management")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_management")]
+#endif
         public bool? RefundManagement { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsPaymentsOptions.cs b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsPaymentsOptions.cs
index 4d118ae7aa..79c8de3ac6 100644
--- a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsPaymentsOptions.cs
+++ b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsPaymentsOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class AccountSessionComponentsPaymentsOptions : INestedOptions
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
         /// The list of features enabled in the embedded component.
         /// </summary>
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsPaymentsFeaturesOptions Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsPayoutsFeaturesOptions.cs b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsPayoutsFeaturesOptions.cs
index 0a4f923b58..c4f25cb9bf 100644
--- a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsPayoutsFeaturesOptions.cs
+++ b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsPayoutsFeaturesOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsPayoutsFeaturesOptions : INestedOptions
     {
@@ -13,6 +16,9 @@ public class AccountSessionComponentsPayoutsFeaturesOptions : INestedOptions
         /// <c>disable_stripe_user_authentication</c> defaults to false.
         /// </summary>
         [JsonProperty("disable_stripe_user_authentication")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("disable_stripe_user_authentication")]
+#endif
         public bool? DisableStripeUserAuthentication { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class AccountSessionComponentsPayoutsFeaturesOptions : INestedOptions
         /// Loss Liability, default <c>false</c> otherwise.
         /// </summary>
         [JsonProperty("edit_payout_schedule")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("edit_payout_schedule")]
+#endif
         public bool? EditPayoutSchedule { get; set; }
 
         /// <summary>
@@ -30,6 +39,9 @@ public class AccountSessionComponentsPayoutsFeaturesOptions : INestedOptions
         /// The default value for this feature is <c>true</c>.
         /// </summary>
         [JsonProperty("external_account_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("external_account_collection")]
+#endif
         public bool? ExternalAccountCollection { get; set; }
 
         /// <summary>
@@ -37,6 +49,9 @@ public class AccountSessionComponentsPayoutsFeaturesOptions : INestedOptions
         /// Liability, default <c>false</c> otherwise.
         /// </summary>
         [JsonProperty("instant_payouts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("instant_payouts")]
+#endif
         public bool? InstantPayouts { get; set; }
 
         /// <summary>
@@ -44,6 +59,9 @@ public class AccountSessionComponentsPayoutsFeaturesOptions : INestedOptions
         /// Liability, default <c>false</c> otherwise.
         /// </summary>
         [JsonProperty("standard_payouts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard_payouts")]
+#endif
         public bool? StandardPayouts { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsPayoutsListOptions.cs b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsPayoutsListOptions.cs
index e1b926bba8..73501338ba 100644
--- a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsPayoutsListOptions.cs
+++ b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsPayoutsListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsPayoutsListOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class AccountSessionComponentsPayoutsListOptions : INestedOptions
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
         /// The list of features enabled in the embedded component.
         /// </summary>
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsPayoutsListFeaturesOptions Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsPayoutsOptions.cs b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsPayoutsOptions.cs
index 5a97cbc2b3..8dda859b5c 100644
--- a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsPayoutsOptions.cs
+++ b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsPayoutsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsPayoutsOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class AccountSessionComponentsPayoutsOptions : INestedOptions
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
         /// The list of features enabled in the embedded component.
         /// </summary>
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsPayoutsFeaturesOptions Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsTaxRegistrationsOptions.cs b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsTaxRegistrationsOptions.cs
index 5f0cfa7049..53dd3eebb4 100644
--- a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsTaxRegistrationsOptions.cs
+++ b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsTaxRegistrationsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsTaxRegistrationsOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class AccountSessionComponentsTaxRegistrationsOptions : INestedOptions
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
         /// The list of features enabled in the embedded component.
         /// </summary>
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsTaxRegistrationsFeaturesOptions Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsTaxSettingsOptions.cs b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsTaxSettingsOptions.cs
index 7a8020a36a..8727d9acb7 100644
--- a/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsTaxSettingsOptions.cs
+++ b/src/Stripe.net/Services/AccountSessions/AccountSessionComponentsTaxSettingsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionComponentsTaxSettingsOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class AccountSessionComponentsTaxSettingsOptions : INestedOptions
         /// Whether the embedded component is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
         /// The list of features enabled in the embedded component.
         /// </summary>
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public AccountSessionComponentsTaxSettingsFeaturesOptions Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountSessions/AccountSessionCreateOptions.cs b/src/Stripe.net/Services/AccountSessions/AccountSessionCreateOptions.cs
index 8231e54a3c..5369e50ce5 100644
--- a/src/Stripe.net/Services/AccountSessions/AccountSessionCreateOptions.cs
+++ b/src/Stripe.net/Services/AccountSessions/AccountSessionCreateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSessionCreateOptions : BaseOptions
     {
@@ -9,6 +12,9 @@ public class AccountSessionCreateOptions : BaseOptions
         /// The identifier of the account to create an Account Session for.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public string Account { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class AccountSessionCreateOptions : BaseOptions
         /// maps to its configuration (e.g. whether it has been enabled or not).
         /// </summary>
         [JsonProperty("components")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("components")]
+#endif
         public AccountSessionComponentsOptions Components { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/AccountSessions/AccountSessionService.cs b/src/Stripe.net/Services/AccountSessions/AccountSessionService.cs
index 4f4613c270..48e85d5335 100644
--- a/src/Stripe.net/Services/AccountSessions/AccountSessionService.cs
+++ b/src/Stripe.net/Services/AccountSessions/AccountSessionService.cs
@@ -6,7 +6,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class AccountSessionService : Service<AccountSession>,
+    public class AccountSessionService : Service,
         ICreatable<AccountSession, AccountSessionCreateOptions>
     {
         public AccountSessionService()
diff --git a/src/Stripe.net/Services/Accounts/AccountBankAccountOptions.cs b/src/Stripe.net/Services/Accounts/AccountBankAccountOptions.cs
index c29640ec3b..66db03e17b 100644
--- a/src/Stripe.net/Services/Accounts/AccountBankAccountOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountBankAccountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountBankAccountOptions : INestedOptions, IHasObject
     {
@@ -10,6 +13,9 @@ public class AccountBankAccountOptions : INestedOptions, IHasObject
         /// when attaching the bank account to a <c>Customer</c> object.
         /// </summary>
         [JsonProperty("account_holder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_name")]
+#endif
         public string AccountHolderName { get; set; }
 
         /// <summary>
@@ -19,18 +25,27 @@ public class AccountBankAccountOptions : INestedOptions, IHasObject
         /// One of: <c>company</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("account_holder_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_type")]
+#endif
         public string AccountHolderType { get; set; }
 
         /// <summary>
         /// The account number for the bank account, in string form. Must be a checking account.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
         /// The country in which the bank account is located.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -38,9 +53,15 @@ public class AccountBankAccountOptions : INestedOptions, IHasObject
         /// href="docs/payouts">Stripe supports.</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; } = "bank_account";
 
         /// <summary>
@@ -50,6 +71,9 @@ public class AccountBankAccountOptions : INestedOptions, IHasObject
         /// for<c>account_number</c>, this field is not required.
         /// </summary>
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountBusinessProfileAnnualRevenueOptions.cs b/src/Stripe.net/Services/Accounts/AccountBusinessProfileAnnualRevenueOptions.cs
index 973e353ccf..b132e5ae6b 100644
--- a/src/Stripe.net/Services/Accounts/AccountBusinessProfileAnnualRevenueOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountBusinessProfileAnnualRevenueOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountBusinessProfileAnnualRevenueOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class AccountBusinessProfileAnnualRevenueOptions : INestedOptions
         /// href="https://stripe.com/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class AccountBusinessProfileAnnualRevenueOptions : INestedOptions
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class AccountBusinessProfileAnnualRevenueOptions : INestedOptions
         /// the 31st of December, 2023.
         /// </summary>
         [JsonProperty("fiscal_year_end")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fiscal_year_end")]
+#endif
         public string FiscalYearEnd { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountBusinessProfileMonthlyEstimatedRevenueOptions.cs b/src/Stripe.net/Services/Accounts/AccountBusinessProfileMonthlyEstimatedRevenueOptions.cs
index 8477b09198..0fc33ac284 100644
--- a/src/Stripe.net/Services/Accounts/AccountBusinessProfileMonthlyEstimatedRevenueOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountBusinessProfileMonthlyEstimatedRevenueOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountBusinessProfileMonthlyEstimatedRevenueOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class AccountBusinessProfileMonthlyEstimatedRevenueOptions : INestedOptio
         /// href="https://stripe.com/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class AccountBusinessProfileMonthlyEstimatedRevenueOptions : INestedOptio
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountBusinessProfileOptions.cs b/src/Stripe.net/Services/Accounts/AccountBusinessProfileOptions.cs
index 455372c14d..0f889bc606 100644
--- a/src/Stripe.net/Services/Accounts/AccountBusinessProfileOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountBusinessProfileOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountBusinessProfileOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class AccountBusinessProfileOptions : INestedOptions
         /// The applicant's gross annual revenue for its preceding fiscal year.
         /// </summary>
         [JsonProperty("annual_revenue")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("annual_revenue")]
+#endif
         public AccountBusinessProfileAnnualRevenueOptions AnnualRevenue { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class AccountBusinessProfileOptions : INestedOptions
         /// the business.
         /// </summary>
         [JsonProperty("estimated_worker_count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("estimated_worker_count")]
+#endif
         public long? EstimatedWorkerCount { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class AccountBusinessProfileOptions : INestedOptions
         /// provide.
         /// </summary>
         [JsonProperty("mcc")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mcc")]
+#endif
         public string Mcc { get; set; }
 
         /// <summary>
@@ -31,12 +43,18 @@ public class AccountBusinessProfileOptions : INestedOptions
         /// and India.
         /// </summary>
         [JsonProperty("monthly_estimated_revenue")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("monthly_estimated_revenue")]
+#endif
         public AccountBusinessProfileMonthlyEstimatedRevenueOptions MonthlyEstimatedRevenue { get; set; }
 
         /// <summary>
         /// The customer-facing business name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -44,36 +62,54 @@ public class AccountBusinessProfileOptions : INestedOptions
         /// Used by Stripe for risk and underwriting purposes.
         /// </summary>
         [JsonProperty("product_description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_description")]
+#endif
         public string ProductDescription { get; set; }
 
         /// <summary>
         /// A publicly available mailing address for sending support issues to.
         /// </summary>
         [JsonProperty("support_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("support_address")]
+#endif
         public AddressOptions SupportAddress { get; set; }
 
         /// <summary>
         /// A publicly available email address for sending support issues to.
         /// </summary>
         [JsonProperty("support_email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("support_email")]
+#endif
         public string SupportEmail { get; set; }
 
         /// <summary>
         /// A publicly available phone number to call with support issues.
         /// </summary>
         [JsonProperty("support_phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("support_phone")]
+#endif
         public string SupportPhone { get; set; }
 
         /// <summary>
         /// A publicly available website for handling support issues.
         /// </summary>
         [JsonProperty("support_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("support_url")]
+#endif
         public string SupportUrl { get; set; }
 
         /// <summary>
         /// The business's publicly available website.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesAcssDebitPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesAcssDebitPaymentsOptions.cs
index 5ddd4e4904..e696c6607c 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesAcssDebitPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesAcssDebitPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesAcssDebitPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesAcssDebitPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesAffirmPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesAffirmPaymentsOptions.cs
index 1258ff0b98..84dc9397ce 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesAffirmPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesAffirmPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesAffirmPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesAffirmPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesAfterpayClearpayPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesAfterpayClearpayPaymentsOptions.cs
index 074531df1c..7026ca431d 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesAfterpayClearpayPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesAfterpayClearpayPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesAfterpayClearpayPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesAfterpayClearpayPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesAlmaPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesAlmaPaymentsOptions.cs
index d58002787f..81a01d64bc 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesAlmaPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesAlmaPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesAlmaPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesAlmaPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesAmazonPayPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesAmazonPayPaymentsOptions.cs
index e2fc40a286..7a8a8e768b 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesAmazonPayPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesAmazonPayPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesAmazonPayPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesAmazonPayPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesAuBecsDebitPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesAuBecsDebitPaymentsOptions.cs
index 68c2d4c385..ba30528504 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesAuBecsDebitPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesAuBecsDebitPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesAuBecsDebitPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesAuBecsDebitPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesBacsDebitPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesBacsDebitPaymentsOptions.cs
index f9dbf85efe..a84510c881 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesBacsDebitPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesBacsDebitPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesBacsDebitPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesBacsDebitPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesBancontactPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesBancontactPaymentsOptions.cs
index e19f328615..2e60245415 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesBancontactPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesBancontactPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesBancontactPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesBancontactPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesBankTransferPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesBankTransferPaymentsOptions.cs
index 2bc55c3305..8f289e3582 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesBankTransferPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesBankTransferPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesBankTransferPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesBankTransferPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesBlikPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesBlikPaymentsOptions.cs
index bbbce3b0d9..21a3fec207 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesBlikPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesBlikPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesBlikPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesBlikPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesBoletoPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesBoletoPaymentsOptions.cs
index 4b6e5c3d69..58d8e7e7fc 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesBoletoPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesBoletoPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesBoletoPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesBoletoPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesCardIssuingOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesCardIssuingOptions.cs
index b391916d2e..5c91a51f38 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesCardIssuingOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesCardIssuingOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesCardIssuingOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesCardIssuingOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesCardPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesCardPaymentsOptions.cs
index c9dd039cae..b2032e4ba0 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesCardPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesCardPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesCardPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesCardPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesCartesBancairesPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesCartesBancairesPaymentsOptions.cs
index 843ef4f0f1..07381a0cb9 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesCartesBancairesPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesCartesBancairesPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesCartesBancairesPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesCartesBancairesPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesCashappPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesCashappPaymentsOptions.cs
index 4314e414ff..002073c887 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesCashappPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesCashappPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesCashappPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesCashappPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesEpsPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesEpsPaymentsOptions.cs
index 559443a033..fd2cc550b9 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesEpsPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesEpsPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesEpsPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesEpsPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesFpxPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesFpxPaymentsOptions.cs
index 8927bc2a9e..b602b7b1ee 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesFpxPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesFpxPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesFpxPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesFpxPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesGbBankTransferPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesGbBankTransferPaymentsOptions.cs
index 5efda499b7..e9062aa05d 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesGbBankTransferPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesGbBankTransferPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesGbBankTransferPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesGbBankTransferPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesGiropayPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesGiropayPaymentsOptions.cs
index 036259f3a5..5a8c961585 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesGiropayPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesGiropayPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesGiropayPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesGiropayPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesGrabpayPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesGrabpayPaymentsOptions.cs
index 6f586d8531..e3f460e092 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesGrabpayPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesGrabpayPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesGrabpayPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesGrabpayPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesIdealPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesIdealPaymentsOptions.cs
index 74df36c227..8f6a60bb3b 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesIdealPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesIdealPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesIdealPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesIdealPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesIndiaInternationalPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesIndiaInternationalPaymentsOptions.cs
index 87e4fc3f7d..71b244efc8 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesIndiaInternationalPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesIndiaInternationalPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesIndiaInternationalPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesIndiaInternationalPaymentsOptions : INestedOptio
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesJcbPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesJcbPaymentsOptions.cs
index c83b875235..3225127a70 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesJcbPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesJcbPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesJcbPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesJcbPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesJpBankTransferPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesJpBankTransferPaymentsOptions.cs
index fe1ad75ea4..dac6152764 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesJpBankTransferPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesJpBankTransferPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesJpBankTransferPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesJpBankTransferPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesKakaoPayPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesKakaoPayPaymentsOptions.cs
index fd831ed037..b02208e26f 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesKakaoPayPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesKakaoPayPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesKakaoPayPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesKakaoPayPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesKlarnaPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesKlarnaPaymentsOptions.cs
index 50d65bb5e7..472386b1ea 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesKlarnaPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesKlarnaPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesKlarnaPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesKlarnaPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesKonbiniPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesKonbiniPaymentsOptions.cs
index b9bd16cd86..1c3ae8d37d 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesKonbiniPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesKonbiniPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesKonbiniPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesKonbiniPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesKrCardPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesKrCardPaymentsOptions.cs
index 209b9b2f2e..726fcd19ff 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesKrCardPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesKrCardPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesKrCardPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesKrCardPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesLegacyPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesLegacyPaymentsOptions.cs
index 726cfd1379..07fc80096e 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesLegacyPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesLegacyPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesLegacyPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesLegacyPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesLinkPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesLinkPaymentsOptions.cs
index 36de901b45..8407594f78 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesLinkPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesLinkPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesLinkPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesLinkPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesMobilepayPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesMobilepayPaymentsOptions.cs
index 00b94592f8..b96bda2e40 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesMobilepayPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesMobilepayPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesMobilepayPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesMobilepayPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesMultibancoPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesMultibancoPaymentsOptions.cs
index df68411233..54e3ce5df4 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesMultibancoPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesMultibancoPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesMultibancoPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesMultibancoPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesMxBankTransferPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesMxBankTransferPaymentsOptions.cs
index ad59f5382d..b687c84ebf 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesMxBankTransferPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesMxBankTransferPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesMxBankTransferPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesMxBankTransferPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesNaverPayPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesNaverPayPaymentsOptions.cs
index f2a39aa457..0cdeabe9b6 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesNaverPayPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesNaverPayPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesNaverPayPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesNaverPayPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesOptions.cs
index d8d784e21f..5133996f44 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesOptions : INestedOptions
     {
@@ -9,324 +12,486 @@ public class AccountCapabilitiesOptions : INestedOptions
         /// The acss_debit_payments capability.
         /// </summary>
         [JsonProperty("acss_debit_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acss_debit_payments")]
+#endif
         public AccountCapabilitiesAcssDebitPaymentsOptions AcssDebitPayments { get; set; }
 
         /// <summary>
         /// The affirm_payments capability.
         /// </summary>
         [JsonProperty("affirm_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("affirm_payments")]
+#endif
         public AccountCapabilitiesAffirmPaymentsOptions AffirmPayments { get; set; }
 
         /// <summary>
         /// The afterpay_clearpay_payments capability.
         /// </summary>
         [JsonProperty("afterpay_clearpay_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("afterpay_clearpay_payments")]
+#endif
         public AccountCapabilitiesAfterpayClearpayPaymentsOptions AfterpayClearpayPayments { get; set; }
 
         /// <summary>
         /// The alma_payments capability.
         /// </summary>
         [JsonProperty("alma_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alma_payments")]
+#endif
         public AccountCapabilitiesAlmaPaymentsOptions AlmaPayments { get; set; }
 
         /// <summary>
         /// The amazon_pay_payments capability.
         /// </summary>
         [JsonProperty("amazon_pay_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amazon_pay_payments")]
+#endif
         public AccountCapabilitiesAmazonPayPaymentsOptions AmazonPayPayments { get; set; }
 
         /// <summary>
         /// The au_becs_debit_payments capability.
         /// </summary>
         [JsonProperty("au_becs_debit_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("au_becs_debit_payments")]
+#endif
         public AccountCapabilitiesAuBecsDebitPaymentsOptions AuBecsDebitPayments { get; set; }
 
         /// <summary>
         /// The bacs_debit_payments capability.
         /// </summary>
         [JsonProperty("bacs_debit_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bacs_debit_payments")]
+#endif
         public AccountCapabilitiesBacsDebitPaymentsOptions BacsDebitPayments { get; set; }
 
         /// <summary>
         /// The bancontact_payments capability.
         /// </summary>
         [JsonProperty("bancontact_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bancontact_payments")]
+#endif
         public AccountCapabilitiesBancontactPaymentsOptions BancontactPayments { get; set; }
 
         /// <summary>
         /// The bank_transfer_payments capability.
         /// </summary>
         [JsonProperty("bank_transfer_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_transfer_payments")]
+#endif
         public AccountCapabilitiesBankTransferPaymentsOptions BankTransferPayments { get; set; }
 
         /// <summary>
         /// The blik_payments capability.
         /// </summary>
         [JsonProperty("blik_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("blik_payments")]
+#endif
         public AccountCapabilitiesBlikPaymentsOptions BlikPayments { get; set; }
 
         /// <summary>
         /// The boleto_payments capability.
         /// </summary>
         [JsonProperty("boleto_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("boleto_payments")]
+#endif
         public AccountCapabilitiesBoletoPaymentsOptions BoletoPayments { get; set; }
 
         /// <summary>
         /// The card_issuing capability.
         /// </summary>
         [JsonProperty("card_issuing")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_issuing")]
+#endif
         public AccountCapabilitiesCardIssuingOptions CardIssuing { get; set; }
 
         /// <summary>
         /// The card_payments capability.
         /// </summary>
         [JsonProperty("card_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_payments")]
+#endif
         public AccountCapabilitiesCardPaymentsOptions CardPayments { get; set; }
 
         /// <summary>
         /// The cartes_bancaires_payments capability.
         /// </summary>
         [JsonProperty("cartes_bancaires_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cartes_bancaires_payments")]
+#endif
         public AccountCapabilitiesCartesBancairesPaymentsOptions CartesBancairesPayments { get; set; }
 
         /// <summary>
         /// The cashapp_payments capability.
         /// </summary>
         [JsonProperty("cashapp_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cashapp_payments")]
+#endif
         public AccountCapabilitiesCashappPaymentsOptions CashappPayments { get; set; }
 
         /// <summary>
         /// The eps_payments capability.
         /// </summary>
         [JsonProperty("eps_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eps_payments")]
+#endif
         public AccountCapabilitiesEpsPaymentsOptions EpsPayments { get; set; }
 
         /// <summary>
         /// The fpx_payments capability.
         /// </summary>
         [JsonProperty("fpx_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fpx_payments")]
+#endif
         public AccountCapabilitiesFpxPaymentsOptions FpxPayments { get; set; }
 
         /// <summary>
         /// The gb_bank_transfer_payments capability.
         /// </summary>
         [JsonProperty("gb_bank_transfer_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gb_bank_transfer_payments")]
+#endif
         public AccountCapabilitiesGbBankTransferPaymentsOptions GbBankTransferPayments { get; set; }
 
         /// <summary>
         /// The giropay_payments capability.
         /// </summary>
         [JsonProperty("giropay_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("giropay_payments")]
+#endif
         public AccountCapabilitiesGiropayPaymentsOptions GiropayPayments { get; set; }
 
         /// <summary>
         /// The grabpay_payments capability.
         /// </summary>
         [JsonProperty("grabpay_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("grabpay_payments")]
+#endif
         public AccountCapabilitiesGrabpayPaymentsOptions GrabpayPayments { get; set; }
 
         /// <summary>
         /// The ideal_payments capability.
         /// </summary>
         [JsonProperty("ideal_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ideal_payments")]
+#endif
         public AccountCapabilitiesIdealPaymentsOptions IdealPayments { get; set; }
 
         /// <summary>
         /// The india_international_payments capability.
         /// </summary>
         [JsonProperty("india_international_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("india_international_payments")]
+#endif
         public AccountCapabilitiesIndiaInternationalPaymentsOptions IndiaInternationalPayments { get; set; }
 
         /// <summary>
         /// The jcb_payments capability.
         /// </summary>
         [JsonProperty("jcb_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("jcb_payments")]
+#endif
         public AccountCapabilitiesJcbPaymentsOptions JcbPayments { get; set; }
 
         /// <summary>
         /// The jp_bank_transfer_payments capability.
         /// </summary>
         [JsonProperty("jp_bank_transfer_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("jp_bank_transfer_payments")]
+#endif
         public AccountCapabilitiesJpBankTransferPaymentsOptions JpBankTransferPayments { get; set; }
 
         /// <summary>
         /// The kakao_pay_payments capability.
         /// </summary>
         [JsonProperty("kakao_pay_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kakao_pay_payments")]
+#endif
         public AccountCapabilitiesKakaoPayPaymentsOptions KakaoPayPayments { get; set; }
 
         /// <summary>
         /// The klarna_payments capability.
         /// </summary>
         [JsonProperty("klarna_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("klarna_payments")]
+#endif
         public AccountCapabilitiesKlarnaPaymentsOptions KlarnaPayments { get; set; }
 
         /// <summary>
         /// The konbini_payments capability.
         /// </summary>
         [JsonProperty("konbini_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("konbini_payments")]
+#endif
         public AccountCapabilitiesKonbiniPaymentsOptions KonbiniPayments { get; set; }
 
         /// <summary>
         /// The kr_card_payments capability.
         /// </summary>
         [JsonProperty("kr_card_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kr_card_payments")]
+#endif
         public AccountCapabilitiesKrCardPaymentsOptions KrCardPayments { get; set; }
 
         /// <summary>
         /// The legacy_payments capability.
         /// </summary>
         [JsonProperty("legacy_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("legacy_payments")]
+#endif
         public AccountCapabilitiesLegacyPaymentsOptions LegacyPayments { get; set; }
 
         /// <summary>
         /// The link_payments capability.
         /// </summary>
         [JsonProperty("link_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("link_payments")]
+#endif
         public AccountCapabilitiesLinkPaymentsOptions LinkPayments { get; set; }
 
         /// <summary>
         /// The mobilepay_payments capability.
         /// </summary>
         [JsonProperty("mobilepay_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mobilepay_payments")]
+#endif
         public AccountCapabilitiesMobilepayPaymentsOptions MobilepayPayments { get; set; }
 
         /// <summary>
         /// The multibanco_payments capability.
         /// </summary>
         [JsonProperty("multibanco_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("multibanco_payments")]
+#endif
         public AccountCapabilitiesMultibancoPaymentsOptions MultibancoPayments { get; set; }
 
         /// <summary>
         /// The mx_bank_transfer_payments capability.
         /// </summary>
         [JsonProperty("mx_bank_transfer_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mx_bank_transfer_payments")]
+#endif
         public AccountCapabilitiesMxBankTransferPaymentsOptions MxBankTransferPayments { get; set; }
 
         /// <summary>
         /// The naver_pay_payments capability.
         /// </summary>
         [JsonProperty("naver_pay_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("naver_pay_payments")]
+#endif
         public AccountCapabilitiesNaverPayPaymentsOptions NaverPayPayments { get; set; }
 
         /// <summary>
         /// The oxxo_payments capability.
         /// </summary>
         [JsonProperty("oxxo_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("oxxo_payments")]
+#endif
         public AccountCapabilitiesOxxoPaymentsOptions OxxoPayments { get; set; }
 
         /// <summary>
         /// The p24_payments capability.
         /// </summary>
         [JsonProperty("p24_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("p24_payments")]
+#endif
         public AccountCapabilitiesP24PaymentsOptions P24Payments { get; set; }
 
         /// <summary>
         /// The pay_by_bank_payments capability.
         /// </summary>
         [JsonProperty("pay_by_bank_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_by_bank_payments")]
+#endif
         public AccountCapabilitiesPayByBankPaymentsOptions PayByBankPayments { get; set; }
 
         /// <summary>
         /// The payco_payments capability.
         /// </summary>
         [JsonProperty("payco_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payco_payments")]
+#endif
         public AccountCapabilitiesPaycoPaymentsOptions PaycoPayments { get; set; }
 
         /// <summary>
         /// The paynow_payments capability.
         /// </summary>
         [JsonProperty("paynow_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paynow_payments")]
+#endif
         public AccountCapabilitiesPaynowPaymentsOptions PaynowPayments { get; set; }
 
         /// <summary>
         /// The promptpay_payments capability.
         /// </summary>
         [JsonProperty("promptpay_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promptpay_payments")]
+#endif
         public AccountCapabilitiesPromptpayPaymentsOptions PromptpayPayments { get; set; }
 
         /// <summary>
         /// The revolut_pay_payments capability.
         /// </summary>
         [JsonProperty("revolut_pay_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("revolut_pay_payments")]
+#endif
         public AccountCapabilitiesRevolutPayPaymentsOptions RevolutPayPayments { get; set; }
 
         /// <summary>
         /// The samsung_pay_payments capability.
         /// </summary>
         [JsonProperty("samsung_pay_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("samsung_pay_payments")]
+#endif
         public AccountCapabilitiesSamsungPayPaymentsOptions SamsungPayPayments { get; set; }
 
         /// <summary>
         /// The sepa_bank_transfer_payments capability.
         /// </summary>
         [JsonProperty("sepa_bank_transfer_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_bank_transfer_payments")]
+#endif
         public AccountCapabilitiesSepaBankTransferPaymentsOptions SepaBankTransferPayments { get; set; }
 
         /// <summary>
         /// The sepa_debit_payments capability.
         /// </summary>
         [JsonProperty("sepa_debit_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_debit_payments")]
+#endif
         public AccountCapabilitiesSepaDebitPaymentsOptions SepaDebitPayments { get; set; }
 
         /// <summary>
         /// The sofort_payments capability.
         /// </summary>
         [JsonProperty("sofort_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sofort_payments")]
+#endif
         public AccountCapabilitiesSofortPaymentsOptions SofortPayments { get; set; }
 
         /// <summary>
         /// The swish_payments capability.
         /// </summary>
         [JsonProperty("swish_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("swish_payments")]
+#endif
         public AccountCapabilitiesSwishPaymentsOptions SwishPayments { get; set; }
 
         /// <summary>
         /// The tax_reporting_us_1099_k capability.
         /// </summary>
         [JsonProperty("tax_reporting_us_1099_k")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_reporting_us_1099_k")]
+#endif
         public AccountCapabilitiesTaxReportingUs1099KOptions TaxReportingUs1099K { get; set; }
 
         /// <summary>
         /// The tax_reporting_us_1099_misc capability.
         /// </summary>
         [JsonProperty("tax_reporting_us_1099_misc")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_reporting_us_1099_misc")]
+#endif
         public AccountCapabilitiesTaxReportingUs1099MiscOptions TaxReportingUs1099Misc { get; set; }
 
         /// <summary>
         /// The transfers capability.
         /// </summary>
         [JsonProperty("transfers")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfers")]
+#endif
         public AccountCapabilitiesTransfersOptions Transfers { get; set; }
 
         /// <summary>
         /// The treasury capability.
         /// </summary>
         [JsonProperty("treasury")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("treasury")]
+#endif
         public AccountCapabilitiesTreasuryOptions Treasury { get; set; }
 
         /// <summary>
         /// The twint_payments capability.
         /// </summary>
         [JsonProperty("twint_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("twint_payments")]
+#endif
         public AccountCapabilitiesTwintPaymentsOptions TwintPayments { get; set; }
 
         /// <summary>
         /// The us_bank_account_ach_payments capability.
         /// </summary>
         [JsonProperty("us_bank_account_ach_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account_ach_payments")]
+#endif
         public AccountCapabilitiesUsBankAccountAchPaymentsOptions UsBankAccountAchPayments { get; set; }
 
         /// <summary>
         /// The us_bank_transfer_payments capability.
         /// </summary>
         [JsonProperty("us_bank_transfer_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_transfer_payments")]
+#endif
         public AccountCapabilitiesUsBankTransferPaymentsOptions UsBankTransferPayments { get; set; }
 
         /// <summary>
         /// The zip_payments capability.
         /// </summary>
         [JsonProperty("zip_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("zip_payments")]
+#endif
         public AccountCapabilitiesZipPaymentsOptions ZipPayments { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesOxxoPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesOxxoPaymentsOptions.cs
index 2ef5c8c060..117b109001 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesOxxoPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesOxxoPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesOxxoPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesOxxoPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesP24PaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesP24PaymentsOptions.cs
index 1f13e786c7..3ca25426ad 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesP24PaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesP24PaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesP24PaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesP24PaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesPayByBankPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesPayByBankPaymentsOptions.cs
index cec806cc86..3a431c26c7 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesPayByBankPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesPayByBankPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesPayByBankPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesPayByBankPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesPaycoPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesPaycoPaymentsOptions.cs
index 4564e8f1f4..677253bdad 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesPaycoPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesPaycoPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesPaycoPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesPaycoPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesPaynowPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesPaynowPaymentsOptions.cs
index 61678cd74d..057ab0d865 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesPaynowPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesPaynowPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesPaynowPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesPaynowPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesPromptpayPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesPromptpayPaymentsOptions.cs
index d45dbeaf68..0a87cbb6cc 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesPromptpayPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesPromptpayPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesPromptpayPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesPromptpayPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesRevolutPayPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesRevolutPayPaymentsOptions.cs
index d1a2468414..c74c337c44 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesRevolutPayPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesRevolutPayPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesRevolutPayPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesRevolutPayPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesSamsungPayPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesSamsungPayPaymentsOptions.cs
index 80be6a75dc..44889f426b 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesSamsungPayPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesSamsungPayPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesSamsungPayPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesSamsungPayPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesSepaBankTransferPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesSepaBankTransferPaymentsOptions.cs
index aabceb537d..c19ffbb973 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesSepaBankTransferPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesSepaBankTransferPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesSepaBankTransferPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesSepaBankTransferPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesSepaDebitPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesSepaDebitPaymentsOptions.cs
index 7377115ef7..b865e68acb 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesSepaDebitPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesSepaDebitPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesSepaDebitPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesSepaDebitPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesSofortPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesSofortPaymentsOptions.cs
index 8588198144..00b2490404 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesSofortPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesSofortPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesSofortPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesSofortPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesSwishPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesSwishPaymentsOptions.cs
index 793ce58775..1eb6ea35c5 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesSwishPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesSwishPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesSwishPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesSwishPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesTaxReportingUs1099KOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesTaxReportingUs1099KOptions.cs
index 2e39486adb..4556de5c4e 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesTaxReportingUs1099KOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesTaxReportingUs1099KOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesTaxReportingUs1099KOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesTaxReportingUs1099KOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesTaxReportingUs1099MiscOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesTaxReportingUs1099MiscOptions.cs
index c2bd10f174..d2cabdc55c 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesTaxReportingUs1099MiscOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesTaxReportingUs1099MiscOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesTaxReportingUs1099MiscOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesTaxReportingUs1099MiscOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesTransfersOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesTransfersOptions.cs
index 5a312c7db7..27e0f0d66e 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesTransfersOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesTransfersOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesTransfersOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesTransfersOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesTreasuryOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesTreasuryOptions.cs
index c8a4342955..a85269d364 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesTreasuryOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesTreasuryOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesTreasuryOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesTreasuryOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesTwintPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesTwintPaymentsOptions.cs
index a6cc4d2f76..1f61bebe24 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesTwintPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesTwintPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesTwintPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesTwintPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesUsBankAccountAchPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesUsBankAccountAchPaymentsOptions.cs
index bedaf1b349..e30aba9efa 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesUsBankAccountAchPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesUsBankAccountAchPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesUsBankAccountAchPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesUsBankAccountAchPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesUsBankTransferPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesUsBankTransferPaymentsOptions.cs
index 55d8c34e97..567bc11281 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesUsBankTransferPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesUsBankTransferPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesUsBankTransferPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesUsBankTransferPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCapabilitiesZipPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountCapabilitiesZipPaymentsOptions.cs
index 1e3afb1fb1..4e2782c2fe 100644
--- a/src/Stripe.net/Services/Accounts/AccountCapabilitiesZipPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCapabilitiesZipPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCapabilitiesZipPaymentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountCapabilitiesZipPaymentsOptions : INestedOptions
         /// capability are returned in the <c>requirements</c> arrays.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCardOptions.cs b/src/Stripe.net/Services/Accounts/AccountCardOptions.cs
index 7c9885aaaa..363d9be11c 100644
--- a/src/Stripe.net/Services/Accounts/AccountCardOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCardOptions.cs
@@ -3,40 +3,76 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCardOptions : INestedOptions, IHasMetadata, IHasObject
     {
         [JsonProperty("address_city")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_city")]
+#endif
         public string AddressCity { get; set; }
 
         [JsonProperty("address_country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_country")]
+#endif
         public string AddressCountry { get; set; }
 
         [JsonProperty("address_line1")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_line1")]
+#endif
         public string AddressLine1 { get; set; }
 
         [JsonProperty("address_line2")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_line2")]
+#endif
         public string AddressLine2 { get; set; }
 
         [JsonProperty("address_state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_state")]
+#endif
         public string AddressState { get; set; }
 
         [JsonProperty("address_zip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_zip")]
+#endif
         public string AddressZip { get; set; }
 
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         [JsonProperty("cvc")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cvc")]
+#endif
         public string Cvc { get; set; }
 
         [JsonProperty("default_for_currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_for_currency")]
+#endif
         public bool? DefaultForCurrency { get; set; }
 
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public long? ExpMonth { get; set; }
 
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public long? ExpYear { get; set; }
 
         /// <summary>
@@ -45,15 +81,27 @@ public class AccountCardOptions : INestedOptions, IHasMetadata, IHasObject
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         [JsonProperty("number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("number")]
+#endif
         public string Number { get; set; }
 
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; } = "card";
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCompanyDirectorshipDeclarationOptions.cs b/src/Stripe.net/Services/Accounts/AccountCompanyDirectorshipDeclarationOptions.cs
index 7ab410b493..51c2c31c9e 100644
--- a/src/Stripe.net/Services/Accounts/AccountCompanyDirectorshipDeclarationOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCompanyDirectorshipDeclarationOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCompanyDirectorshipDeclarationOptions : INestedOptions
     {
@@ -12,12 +15,19 @@ public class AccountCompanyDirectorshipDeclarationOptions : INestedOptions
         /// </summary>
         [JsonProperty("date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? Date { get; set; }
 
         /// <summary>
         /// The IP address from which the directorship declaration attestation was made.
         /// </summary>
         [JsonProperty("ip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip")]
+#endif
         public string Ip { get; set; }
 
         /// <summary>
@@ -25,6 +35,9 @@ public class AccountCompanyDirectorshipDeclarationOptions : INestedOptions
         /// made.
         /// </summary>
         [JsonProperty("user_agent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_agent")]
+#endif
         public string UserAgent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCompanyOptions.cs b/src/Stripe.net/Services/Accounts/AccountCompanyOptions.cs
index 1f81463e26..9e330a5872 100644
--- a/src/Stripe.net/Services/Accounts/AccountCompanyOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCompanyOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCompanyOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class AccountCompanyOptions : INestedOptions
         /// The company's primary address.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public AddressOptions Address { get; set; }
 
         /// <summary>
         /// The Kana variation of the company's primary address (Japan only).
         /// </summary>
         [JsonProperty("address_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_kana")]
+#endif
         public AddressJapanOptions AddressKana { get; set; }
 
         /// <summary>
         /// The Kanji variation of the company's primary address (Japan only).
         /// </summary>
         [JsonProperty("address_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_kanji")]
+#endif
         public AddressJapanOptions AddressKanji { get; set; }
 
         /// <summary>
@@ -32,6 +44,9 @@ public class AccountCompanyOptions : INestedOptions
         /// directors have been provided.
         /// </summary>
         [JsonProperty("directors_provided")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("directors_provided")]
+#endif
         public bool? DirectorsProvided { get; set; }
 
         /// <summary>
@@ -39,6 +54,9 @@ public class AccountCompanyOptions : INestedOptions
         /// current and correct.
         /// </summary>
         [JsonProperty("directorship_declaration")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("directorship_declaration")]
+#endif
         public AccountCompanyDirectorshipDeclarationOptions DirectorshipDeclaration { get; set; }
 
         /// <summary>
@@ -48,6 +66,9 @@ public class AccountCompanyOptions : INestedOptions
         /// <c>relationship.executive</c> requirement.
         /// </summary>
         [JsonProperty("executives_provided")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("executives_provided")]
+#endif
         public bool? ExecutivesProvided { get; set; }
 
         /// <summary>
@@ -55,30 +76,45 @@ public class AccountCompanyOptions : INestedOptions
         /// only).
         /// </summary>
         [JsonProperty("export_license_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("export_license_id")]
+#endif
         public string ExportLicenseId { get; set; }
 
         /// <summary>
         /// The purpose code to use for export transactions (India only).
         /// </summary>
         [JsonProperty("export_purpose_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("export_purpose_code")]
+#endif
         public string ExportPurposeCode { get; set; }
 
         /// <summary>
         /// The company's legal name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// The Kana variation of the company's legal name (Japan only).
         /// </summary>
         [JsonProperty("name_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name_kana")]
+#endif
         public string NameKana { get; set; }
 
         /// <summary>
         /// The Kanji variation of the company's legal name (Japan only).
         /// </summary>
         [JsonProperty("name_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name_kanji")]
+#endif
         public string NameKanji { get; set; }
 
         /// <summary>
@@ -87,6 +123,9 @@ public class AccountCompanyOptions : INestedOptions
         /// Persons API</a> for accounts with a <c>relationship.owner</c> requirement.
         /// </summary>
         [JsonProperty("owners_provided")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("owners_provided")]
+#endif
         public bool? OwnersProvided { get; set; }
 
         /// <summary>
@@ -94,6 +133,9 @@ public class AccountCompanyOptions : INestedOptions
         /// both current and correct.
         /// </summary>
         [JsonProperty("ownership_declaration")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ownership_declaration")]
+#endif
         public AccountCompanyOwnershipDeclarationOptions OwnershipDeclaration { get; set; }
 
         /// <summary>
@@ -101,12 +143,18 @@ public class AccountCompanyOptions : INestedOptions
         /// <c>qualifies_as_financial_institution</c>.
         /// </summary>
         [JsonProperty("ownership_exemption_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ownership_exemption_reason")]
+#endif
         public string OwnershipExemptionReason { get; set; }
 
         /// <summary>
         /// The company's phone number (used for verification).
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
 
         /// <summary>
@@ -116,6 +164,9 @@ public class AccountCompanyOptions : INestedOptions
         /// Hong Kong).
         /// </summary>
         [JsonProperty("registration_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("registration_number")]
+#endif
         public string RegistrationNumber { get; set; }
 
         /// <summary>
@@ -134,6 +185,9 @@ public class AccountCompanyOptions : INestedOptions
         /// <c>unincorporated_partnership</c>.
         /// </summary>
         [JsonProperty("structure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("structure")]
+#endif
         public string Structure { get; set; }
 
         /// <summary>
@@ -142,6 +196,9 @@ public class AccountCompanyOptions : INestedOptions
         /// Company Number in the UK.).
         /// </summary>
         [JsonProperty("tax_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_id")]
+#endif
         public string TaxId { get; set; }
 
         /// <summary>
@@ -149,18 +206,27 @@ public class AccountCompanyOptions : INestedOptions
         /// only).
         /// </summary>
         [JsonProperty("tax_id_registrar")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_id_registrar")]
+#endif
         public string TaxIdRegistrar { get; set; }
 
         /// <summary>
         /// The VAT number of the company.
         /// </summary>
         [JsonProperty("vat_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("vat_id")]
+#endif
         public string VatId { get; set; }
 
         /// <summary>
         /// Information on the verification state of the company.
         /// </summary>
         [JsonProperty("verification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification")]
+#endif
         public AccountCompanyVerificationOptions Verification { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCompanyOwnershipDeclarationOptions.cs b/src/Stripe.net/Services/Accounts/AccountCompanyOwnershipDeclarationOptions.cs
index 268cbb34d6..d37d49e715 100644
--- a/src/Stripe.net/Services/Accounts/AccountCompanyOwnershipDeclarationOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCompanyOwnershipDeclarationOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCompanyOwnershipDeclarationOptions : INestedOptions
     {
@@ -12,18 +15,28 @@ public class AccountCompanyOwnershipDeclarationOptions : INestedOptions
         /// </summary>
         [JsonProperty("date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? Date { get; set; }
 
         /// <summary>
         /// The IP address from which the beneficial owner attestation was made.
         /// </summary>
         [JsonProperty("ip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip")]
+#endif
         public string Ip { get; set; }
 
         /// <summary>
         /// The user agent of the browser from which the beneficial owner attestation was made.
         /// </summary>
         [JsonProperty("user_agent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_agent")]
+#endif
         public string UserAgent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCompanyVerificationDocumentOptions.cs b/src/Stripe.net/Services/Accounts/AccountCompanyVerificationDocumentOptions.cs
index 3a3060d18a..de5c994c8d 100644
--- a/src/Stripe.net/Services/Accounts/AccountCompanyVerificationDocumentOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCompanyVerificationDocumentOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCompanyVerificationDocumentOptions : INestedOptions
     {
@@ -13,6 +16,9 @@ public class AccountCompanyVerificationDocumentOptions : INestedOptions
         /// size.
         /// </summary>
         [JsonProperty("back")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("back")]
+#endif
         public string Back { get; set; }
 
         /// <summary>
@@ -23,6 +29,9 @@ public class AccountCompanyVerificationDocumentOptions : INestedOptions
         /// size.
         /// </summary>
         [JsonProperty("front")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("front")]
+#endif
         public string Front { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCompanyVerificationOptions.cs b/src/Stripe.net/Services/Accounts/AccountCompanyVerificationOptions.cs
index 3193526faa..5e4ce5f315 100644
--- a/src/Stripe.net/Services/Accounts/AccountCompanyVerificationOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCompanyVerificationOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCompanyVerificationOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class AccountCompanyVerificationOptions : INestedOptions
         /// A document verifying the business.
         /// </summary>
         [JsonProperty("document")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("document")]
+#endif
         public AccountCompanyVerificationDocumentOptions Document { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountControllerFeesOptions.cs b/src/Stripe.net/Services/Accounts/AccountControllerFeesOptions.cs
index 109d36808e..0e5ee8dfcb 100644
--- a/src/Stripe.net/Services/Accounts/AccountControllerFeesOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountControllerFeesOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountControllerFeesOptions : INestedOptions
     {
@@ -13,6 +16,9 @@ public class AccountControllerFeesOptions : INestedOptions
         /// One of: <c>account</c>, or <c>application</c>.
         /// </summary>
         [JsonProperty("payer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payer")]
+#endif
         public string Payer { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountControllerLossesOptions.cs b/src/Stripe.net/Services/Accounts/AccountControllerLossesOptions.cs
index 96b1f71376..e402ee0854 100644
--- a/src/Stripe.net/Services/Accounts/AccountControllerLossesOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountControllerLossesOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountControllerLossesOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountControllerLossesOptions : INestedOptions
         /// One of: <c>application</c>, or <c>stripe</c>.
         /// </summary>
         [JsonProperty("payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payments")]
+#endif
         public string Payments { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountControllerOptions.cs b/src/Stripe.net/Services/Accounts/AccountControllerOptions.cs
index 8f114acb85..d547592bbc 100644
--- a/src/Stripe.net/Services/Accounts/AccountControllerOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountControllerOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountControllerOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class AccountControllerOptions : INestedOptions
         /// A hash of configuration for who pays Stripe fees for product usage on this account.
         /// </summary>
         [JsonProperty("fees")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fees")]
+#endif
         public AccountControllerFeesOptions Fees { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class AccountControllerOptions : INestedOptions
         /// Stripe or a Connect application is responsible for them.
         /// </summary>
         [JsonProperty("losses")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("losses")]
+#endif
         public AccountControllerLossesOptions Losses { get; set; }
 
         /// <summary>
@@ -24,12 +33,18 @@ public class AccountControllerOptions : INestedOptions
         /// One of: <c>application</c>, or <c>stripe</c>.
         /// </summary>
         [JsonProperty("requirement_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requirement_collection")]
+#endif
         public string RequirementCollection { get; set; }
 
         /// <summary>
         /// A hash of configuration for Stripe-hosted dashboards.
         /// </summary>
         [JsonProperty("stripe_dashboard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("stripe_dashboard")]
+#endif
         public AccountControllerStripeDashboardOptions StripeDashboard { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountControllerStripeDashboardOptions.cs b/src/Stripe.net/Services/Accounts/AccountControllerStripeDashboardOptions.cs
index 0122f1cc3b..a15922dbb3 100644
--- a/src/Stripe.net/Services/Accounts/AccountControllerStripeDashboardOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountControllerStripeDashboardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountControllerStripeDashboardOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class AccountControllerStripeDashboardOptions : INestedOptions
         /// One of: <c>express</c>, <c>full</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountCreateOptions.cs b/src/Stripe.net/Services/Accounts/AccountCreateOptions.cs
index 76bda13239..93d0baa6b3 100644
--- a/src/Stripe.net/Services/Accounts/AccountCreateOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountCreateOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountCreateOptions : BaseOptions, IHasMetadata
     {
@@ -12,12 +15,18 @@ public class AccountCreateOptions : BaseOptions, IHasMetadata
         /// securely provide details to the account.
         /// </summary>
         [JsonProperty("account_token")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_token")]
+#endif
         public string AccountToken { get; set; }
 
         /// <summary>
         /// Business information about the account.
         /// </summary>
         [JsonProperty("business_profile")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("business_profile")]
+#endif
         public AccountBusinessProfileOptions BusinessProfile { get; set; }
 
         /// <summary>
@@ -31,6 +40,9 @@ public class AccountCreateOptions : BaseOptions, IHasMetadata
         /// <c>non_profit</c>.
         /// </summary>
         [JsonProperty("business_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("business_type")]
+#endif
         public string BusinessType { get; set; }
 
         /// <summary>
@@ -44,6 +56,9 @@ public class AccountCreateOptions : BaseOptions, IHasMetadata
         /// is <c>none</c>, which includes Custom accounts.
         /// </summary>
         [JsonProperty("capabilities")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capabilities")]
+#endif
         public AccountCapabilitiesOptions Capabilities { get; set; }
 
         /// <summary>
@@ -56,12 +71,18 @@ public class AccountCreateOptions : BaseOptions, IHasMetadata
         /// is <c>application</c>, which includes Custom accounts.
         /// </summary>
         [JsonProperty("company")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("company")]
+#endif
         public AccountCompanyOptions Company { get; set; }
 
         /// <summary>
         /// A hash of configuration describing the account controller's attributes.
         /// </summary>
         [JsonProperty("controller")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("controller")]
+#endif
         public AccountControllerOptions Controller { get; set; }
 
         /// <summary>
@@ -75,6 +96,9 @@ public class AccountCreateOptions : BaseOptions, IHasMetadata
         /// supported.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -83,12 +107,18 @@ public class AccountCreateOptions : BaseOptions, IHasMetadata
         /// account's country</a>.
         /// </summary>
         [JsonProperty("default_currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_currency")]
+#endif
         public string DefaultCurrency { get; set; }
 
         /// <summary>
         /// Documents that may be submitted to satisfy various informational requests.
         /// </summary>
         [JsonProperty("documents")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("documents")]
+#endif
         public AccountDocumentsOptions Documents { get; set; }
 
         /// <summary>
@@ -99,6 +129,9 @@ public class AccountCreateOptions : BaseOptions, IHasMetadata
         /// without your consent.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
@@ -121,6 +154,10 @@ public class AccountCreateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("external_account")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("external_account")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<string, AccountBankAccountOptions, AccountCardOptions> ExternalAccount { get; set; }
 
         /// <summary>
@@ -128,6 +165,9 @@ public class AccountCreateOptions : BaseOptions, IHasMetadata
         /// added to.
         /// </summary>
         [JsonProperty("groups")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("groups")]
+#endif
         public AccountGroupsOptions Groups { get; set; }
 
         /// <summary>
@@ -140,6 +180,9 @@ public class AccountCreateOptions : BaseOptions, IHasMetadata
         /// is <c>application</c>, which includes Custom accounts.
         /// </summary>
         [JsonProperty("individual")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("individual")]
+#endif
         public AccountIndividualOptions Individual { get; set; }
 
         /// <summary>
@@ -149,12 +192,18 @@ public class AccountCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Options for customizing how the account functions within Stripe.
         /// </summary>
         [JsonProperty("settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("settings")]
+#endif
         public AccountSettingsOptions Settings { get; set; }
 
         /// <summary>
@@ -166,6 +215,9 @@ public class AccountCreateOptions : BaseOptions, IHasMetadata
         /// <c>full</c> service agreement when empty.
         /// </summary>
         [JsonProperty("tos_acceptance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tos_acceptance")]
+#endif
         public AccountTosAcceptanceOptions TosAcceptance { get; set; }
 
         /// <summary>
@@ -174,6 +226,9 @@ public class AccountCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>custom</c>, <c>express</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountDocumentsBankAccountOwnershipVerificationOptions.cs b/src/Stripe.net/Services/Accounts/AccountDocumentsBankAccountOwnershipVerificationOptions.cs
index 2edbea6495..4aac3a8df5 100644
--- a/src/Stripe.net/Services/Accounts/AccountDocumentsBankAccountOwnershipVerificationOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountDocumentsBankAccountOwnershipVerificationOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountDocumentsBankAccountOwnershipVerificationOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class AccountDocumentsBankAccountOwnershipVerificationOptions : INestedOp
         /// value of <c>account_requirement</c>.
         /// </summary>
         [JsonProperty("files")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("files")]
+#endif
         public List<string> Files { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountDocumentsCompanyLicenseOptions.cs b/src/Stripe.net/Services/Accounts/AccountDocumentsCompanyLicenseOptions.cs
index 9fa2ce8ce5..de42013e87 100644
--- a/src/Stripe.net/Services/Accounts/AccountDocumentsCompanyLicenseOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountDocumentsCompanyLicenseOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountDocumentsCompanyLicenseOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class AccountDocumentsCompanyLicenseOptions : INestedOptions
         /// value of <c>account_requirement</c>.
         /// </summary>
         [JsonProperty("files")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("files")]
+#endif
         public List<string> Files { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountDocumentsCompanyMemorandumOfAssociationOptions.cs b/src/Stripe.net/Services/Accounts/AccountDocumentsCompanyMemorandumOfAssociationOptions.cs
index 052cb20697..1665d97d45 100644
--- a/src/Stripe.net/Services/Accounts/AccountDocumentsCompanyMemorandumOfAssociationOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountDocumentsCompanyMemorandumOfAssociationOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountDocumentsCompanyMemorandumOfAssociationOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class AccountDocumentsCompanyMemorandumOfAssociationOptions : INestedOpti
         /// value of <c>account_requirement</c>.
         /// </summary>
         [JsonProperty("files")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("files")]
+#endif
         public List<string> Files { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountDocumentsCompanyMinisterialDecreeOptions.cs b/src/Stripe.net/Services/Accounts/AccountDocumentsCompanyMinisterialDecreeOptions.cs
index 3ddb1b3a67..204840bfaa 100644
--- a/src/Stripe.net/Services/Accounts/AccountDocumentsCompanyMinisterialDecreeOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountDocumentsCompanyMinisterialDecreeOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountDocumentsCompanyMinisterialDecreeOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class AccountDocumentsCompanyMinisterialDecreeOptions : INestedOptions
         /// value of <c>account_requirement</c>.
         /// </summary>
         [JsonProperty("files")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("files")]
+#endif
         public List<string> Files { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountDocumentsCompanyRegistrationVerificationOptions.cs b/src/Stripe.net/Services/Accounts/AccountDocumentsCompanyRegistrationVerificationOptions.cs
index 2fc438f714..f79d860b96 100644
--- a/src/Stripe.net/Services/Accounts/AccountDocumentsCompanyRegistrationVerificationOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountDocumentsCompanyRegistrationVerificationOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountDocumentsCompanyRegistrationVerificationOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class AccountDocumentsCompanyRegistrationVerificationOptions : INestedOpt
         /// value of <c>account_requirement</c>.
         /// </summary>
         [JsonProperty("files")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("files")]
+#endif
         public List<string> Files { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountDocumentsCompanyTaxIdVerificationOptions.cs b/src/Stripe.net/Services/Accounts/AccountDocumentsCompanyTaxIdVerificationOptions.cs
index 1af9489c86..3d700be618 100644
--- a/src/Stripe.net/Services/Accounts/AccountDocumentsCompanyTaxIdVerificationOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountDocumentsCompanyTaxIdVerificationOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountDocumentsCompanyTaxIdVerificationOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class AccountDocumentsCompanyTaxIdVerificationOptions : INestedOptions
         /// value of <c>account_requirement</c>.
         /// </summary>
         [JsonProperty("files")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("files")]
+#endif
         public List<string> Files { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountDocumentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountDocumentsOptions.cs
index d317209ee1..016acde5c8 100644
--- a/src/Stripe.net/Services/Accounts/AccountDocumentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountDocumentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountDocumentsOptions : INestedOptions
     {
@@ -13,18 +16,27 @@ public class AccountDocumentsOptions : INestedOptions
         /// number, either a statement or a check.
         /// </summary>
         [JsonProperty("bank_account_ownership_verification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_account_ownership_verification")]
+#endif
         public AccountDocumentsBankAccountOwnershipVerificationOptions BankAccountOwnershipVerification { get; set; }
 
         /// <summary>
         /// One or more documents that demonstrate proof of a company's license to operate.
         /// </summary>
         [JsonProperty("company_license")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("company_license")]
+#endif
         public AccountDocumentsCompanyLicenseOptions CompanyLicense { get; set; }
 
         /// <summary>
         /// One or more documents showing the company's Memorandum of Association.
         /// </summary>
         [JsonProperty("company_memorandum_of_association")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("company_memorandum_of_association")]
+#endif
         public AccountDocumentsCompanyMemorandumOfAssociationOptions CompanyMemorandumOfAssociation { get; set; }
 
         /// <summary>
@@ -32,6 +44,9 @@ public class AccountDocumentsOptions : INestedOptions
         /// the company's establishment.
         /// </summary>
         [JsonProperty("company_ministerial_decree")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("company_ministerial_decree")]
+#endif
         public AccountDocumentsCompanyMinisterialDecreeOptions CompanyMinisterialDecree { get; set; }
 
         /// <summary>
@@ -39,12 +54,18 @@ public class AccountDocumentsOptions : INestedOptions
         /// appropriate local authorities.
         /// </summary>
         [JsonProperty("company_registration_verification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("company_registration_verification")]
+#endif
         public AccountDocumentsCompanyRegistrationVerificationOptions CompanyRegistrationVerification { get; set; }
 
         /// <summary>
         /// One or more documents that demonstrate proof of a company's tax ID.
         /// </summary>
         [JsonProperty("company_tax_id_verification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("company_tax_id_verification")]
+#endif
         public AccountDocumentsCompanyTaxIdVerificationOptions CompanyTaxIdVerification { get; set; }
 
         /// <summary>
@@ -52,12 +73,18 @@ public class AccountDocumentsOptions : INestedOptions
         /// business registry.
         /// </summary>
         [JsonProperty("proof_of_registration")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("proof_of_registration")]
+#endif
         public AccountDocumentsProofOfRegistrationOptions ProofOfRegistration { get; set; }
 
         /// <summary>
         /// One or more documents that demonstrate proof of ultimate beneficial ownership.
         /// </summary>
         [JsonProperty("proof_of_ultimate_beneficial_ownership")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("proof_of_ultimate_beneficial_ownership")]
+#endif
         public AccountDocumentsProofOfUltimateBeneficialOwnershipOptions ProofOfUltimateBeneficialOwnership { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountDocumentsProofOfRegistrationOptions.cs b/src/Stripe.net/Services/Accounts/AccountDocumentsProofOfRegistrationOptions.cs
index d386e0caf4..af8510cd3e 100644
--- a/src/Stripe.net/Services/Accounts/AccountDocumentsProofOfRegistrationOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountDocumentsProofOfRegistrationOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountDocumentsProofOfRegistrationOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class AccountDocumentsProofOfRegistrationOptions : INestedOptions
         /// value of <c>account_requirement</c>.
         /// </summary>
         [JsonProperty("files")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("files")]
+#endif
         public List<string> Files { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountDocumentsProofOfUltimateBeneficialOwnershipOptions.cs b/src/Stripe.net/Services/Accounts/AccountDocumentsProofOfUltimateBeneficialOwnershipOptions.cs
index bb48207c77..a64be73b41 100644
--- a/src/Stripe.net/Services/Accounts/AccountDocumentsProofOfUltimateBeneficialOwnershipOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountDocumentsProofOfUltimateBeneficialOwnershipOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountDocumentsProofOfUltimateBeneficialOwnershipOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class AccountDocumentsProofOfUltimateBeneficialOwnershipOptions : INested
         /// value of <c>account_requirement</c>.
         /// </summary>
         [JsonProperty("files")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("files")]
+#endif
         public List<string> Files { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountGroupsOptions.cs b/src/Stripe.net/Services/Accounts/AccountGroupsOptions.cs
index 8e3f7dc6d0..4f5ad8a0a0 100644
--- a/src/Stripe.net/Services/Accounts/AccountGroupsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountGroupsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountGroupsOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class AccountGroupsOptions : INestedOptions
         /// tool documentation</a> for details.
         /// </summary>
         [JsonProperty("payments_pricing")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payments_pricing")]
+#endif
         public string PaymentsPricing { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountIndividualOptions.cs b/src/Stripe.net/Services/Accounts/AccountIndividualOptions.cs
index 1c4b82914f..8a86ff5805 100644
--- a/src/Stripe.net/Services/Accounts/AccountIndividualOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountIndividualOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountIndividualOptions : INestedOptions, IHasMetadata
     {
@@ -10,60 +13,90 @@ public class AccountIndividualOptions : INestedOptions, IHasMetadata
         /// The individual's primary address.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public AddressOptions Address { get; set; }
 
         /// <summary>
         /// The Kana variation of the individual's primary address (Japan only).
         /// </summary>
         [JsonProperty("address_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_kana")]
+#endif
         public AddressJapanOptions AddressKana { get; set; }
 
         /// <summary>
         /// The Kanji variation of the individual's primary address (Japan only).
         /// </summary>
         [JsonProperty("address_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_kanji")]
+#endif
         public AddressJapanOptions AddressKanji { get; set; }
 
         /// <summary>
         /// The individual's date of birth.
         /// </summary>
         [JsonProperty("dob")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dob")]
+#endif
         public DobOptions Dob { get; set; }
 
         /// <summary>
         /// The individual's email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// The individual's first name.
         /// </summary>
         [JsonProperty("first_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_name")]
+#endif
         public string FirstName { get; set; }
 
         /// <summary>
         /// The Kana variation of the individual's first name (Japan only).
         /// </summary>
         [JsonProperty("first_name_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_name_kana")]
+#endif
         public string FirstNameKana { get; set; }
 
         /// <summary>
         /// The Kanji variation of the individual's first name (Japan only).
         /// </summary>
         [JsonProperty("first_name_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_name_kanji")]
+#endif
         public string FirstNameKanji { get; set; }
 
         /// <summary>
         /// A list of alternate names or aliases that the individual is known by.
         /// </summary>
         [JsonProperty("full_name_aliases")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("full_name_aliases")]
+#endif
         public List<string> FullNameAliases { get; set; }
 
         /// <summary>
         /// The individual's gender.
         /// </summary>
         [JsonProperty("gender")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gender")]
+#endif
         public string Gender { get; set; }
 
         /// <summary>
@@ -74,6 +107,9 @@ public class AccountIndividualOptions : INestedOptions, IHasMetadata
         /// Stripe.js</a>.
         /// </summary>
         [JsonProperty("id_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id_number")]
+#endif
         public string IdNumber { get; set; }
 
         /// <summary>
@@ -85,30 +121,45 @@ public class AccountIndividualOptions : INestedOptions, IHasMetadata
         /// Stripe.js</a>.
         /// </summary>
         [JsonProperty("id_number_secondary")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id_number_secondary")]
+#endif
         public string IdNumberSecondary { get; set; }
 
         /// <summary>
         /// The individual's last name.
         /// </summary>
         [JsonProperty("last_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_name")]
+#endif
         public string LastName { get; set; }
 
         /// <summary>
         /// The Kana variation of the individual's last name (Japan only).
         /// </summary>
         [JsonProperty("last_name_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_name_kana")]
+#endif
         public string LastNameKana { get; set; }
 
         /// <summary>
         /// The Kanji variation of the individual's last name (Japan only).
         /// </summary>
         [JsonProperty("last_name_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_name_kanji")]
+#endif
         public string LastNameKanji { get; set; }
 
         /// <summary>
         /// The individual's maiden name.
         /// </summary>
         [JsonProperty("maiden_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("maiden_name")]
+#endif
         public string MaidenName { get; set; }
 
         /// <summary>
@@ -118,12 +169,18 @@ public class AccountIndividualOptions : INestedOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The individual's phone number.
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
 
         /// <summary>
@@ -133,30 +190,45 @@ public class AccountIndividualOptions : INestedOptions, IHasMetadata
         /// One of: <c>existing</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("political_exposure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("political_exposure")]
+#endif
         public string PoliticalExposure { get; set; }
 
         /// <summary>
         /// The individual's registered address.
         /// </summary>
         [JsonProperty("registered_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("registered_address")]
+#endif
         public AddressOptions RegisteredAddress { get; set; }
 
         /// <summary>
         /// Describes the person’s relationship to the account.
         /// </summary>
         [JsonProperty("relationship")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("relationship")]
+#endif
         public AccountIndividualRelationshipOptions Relationship { get; set; }
 
         /// <summary>
         /// The last four digits of the individual's Social Security Number (U.S. only).
         /// </summary>
         [JsonProperty("ssn_last_4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ssn_last_4")]
+#endif
         public string SsnLast4 { get; set; }
 
         /// <summary>
         /// The individual's verification document information.
         /// </summary>
         [JsonProperty("verification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification")]
+#endif
         public AccountIndividualVerificationOptions Verification { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountIndividualRelationshipOptions.cs b/src/Stripe.net/Services/Accounts/AccountIndividualRelationshipOptions.cs
index 25b4210a37..a426912827 100644
--- a/src/Stripe.net/Services/Accounts/AccountIndividualRelationshipOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountIndividualRelationshipOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountIndividualRelationshipOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountIndividualRelationshipOptions : INestedOptions
         /// meets its regulatory obligations.
         /// </summary>
         [JsonProperty("director")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("director")]
+#endif
         public bool? Director { get; set; }
 
         /// <summary>
@@ -18,24 +24,36 @@ public class AccountIndividualRelationshipOptions : INestedOptions
         /// organization.
         /// </summary>
         [JsonProperty("executive")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("executive")]
+#endif
         public bool? Executive { get; set; }
 
         /// <summary>
         /// Whether the person is an owner of the account’s legal entity.
         /// </summary>
         [JsonProperty("owner")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("owner")]
+#endif
         public bool? Owner { get; set; }
 
         /// <summary>
         /// The percent owned by the person of the account's legal entity.
         /// </summary>
         [JsonProperty("percent_ownership")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percent_ownership")]
+#endif
         public decimal? PercentOwnership { get; set; }
 
         /// <summary>
         /// The person's title (e.g., CEO, Support Engineer).
         /// </summary>
         [JsonProperty("title")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("title")]
+#endif
         public string Title { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountIndividualVerificationAdditionalDocumentOptions.cs b/src/Stripe.net/Services/Accounts/AccountIndividualVerificationAdditionalDocumentOptions.cs
index fcc8f43ab6..2cc82a3691 100644
--- a/src/Stripe.net/Services/Accounts/AccountIndividualVerificationAdditionalDocumentOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountIndividualVerificationAdditionalDocumentOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountIndividualVerificationAdditionalDocumentOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class AccountIndividualVerificationAdditionalDocumentOptions : INestedOpt
         /// and less than 10 MB in size.
         /// </summary>
         [JsonProperty("back")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("back")]
+#endif
         public string Back { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class AccountIndividualVerificationAdditionalDocumentOptions : INestedOpt
         /// and less than 10 MB in size.
         /// </summary>
         [JsonProperty("front")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("front")]
+#endif
         public string Front { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountIndividualVerificationDocumentOptions.cs b/src/Stripe.net/Services/Accounts/AccountIndividualVerificationDocumentOptions.cs
index cf5fd12c46..e5ab42a0c4 100644
--- a/src/Stripe.net/Services/Accounts/AccountIndividualVerificationDocumentOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountIndividualVerificationDocumentOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountIndividualVerificationDocumentOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class AccountIndividualVerificationDocumentOptions : INestedOptions
         /// and less than 10 MB in size.
         /// </summary>
         [JsonProperty("back")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("back")]
+#endif
         public string Back { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class AccountIndividualVerificationDocumentOptions : INestedOptions
         /// and less than 10 MB in size.
         /// </summary>
         [JsonProperty("front")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("front")]
+#endif
         public string Front { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountIndividualVerificationOptions.cs b/src/Stripe.net/Services/Accounts/AccountIndividualVerificationOptions.cs
index 5701dd4d0c..e751661e71 100644
--- a/src/Stripe.net/Services/Accounts/AccountIndividualVerificationOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountIndividualVerificationOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountIndividualVerificationOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class AccountIndividualVerificationOptions : INestedOptions
         /// well-known utility company.
         /// </summary>
         [JsonProperty("additional_document")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("additional_document")]
+#endif
         public AccountIndividualVerificationAdditionalDocumentOptions AdditionalDocument { get; set; }
 
         /// <summary>
         /// An identifying document, either a passport or local ID card.
         /// </summary>
         [JsonProperty("document")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("document")]
+#endif
         public AccountIndividualVerificationDocumentOptions Document { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountRejectOptions.cs b/src/Stripe.net/Services/Accounts/AccountRejectOptions.cs
index 2863bd0dde..9cc2623c27 100644
--- a/src/Stripe.net/Services/Accounts/AccountRejectOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountRejectOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountRejectOptions : BaseOptions
     {
@@ -10,6 +13,9 @@ public class AccountRejectOptions : BaseOptions
         /// <c>other</c>.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountService.cs b/src/Stripe.net/Services/Accounts/AccountService.cs
index 98dc92f672..0a21214e4d 100644
--- a/src/Stripe.net/Services/Accounts/AccountService.cs
+++ b/src/Stripe.net/Services/Accounts/AccountService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class AccountService : Service<Account>,
+    public class AccountService : Service,
         ICreatable<Account, AccountCreateOptions>,
         IDeletable<Account, AccountDeleteOptions>,
         IListable<Account, AccountListOptions>,
diff --git a/src/Stripe.net/Services/Accounts/AccountSettingsBacsDebitPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountSettingsBacsDebitPaymentsOptions.cs
index 9d52062b9b..1a5378b218 100644
--- a/src/Stripe.net/Services/Accounts/AccountSettingsBacsDebitPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountSettingsBacsDebitPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSettingsBacsDebitPaymentsOptions : INestedOptions
     {
@@ -15,6 +18,9 @@ public class AccountSettingsBacsDebitPaymentsOptions : INestedOptions
         /// branding, which is free.
         /// </summary>
         [JsonProperty("display_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_name")]
+#endif
         public string DisplayName { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountSettingsBrandingOptions.cs b/src/Stripe.net/Services/Accounts/AccountSettingsBrandingOptions.cs
index 7ac516ce16..5c57de1fe0 100644
--- a/src/Stripe.net/Services/Accounts/AccountSettingsBrandingOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountSettingsBrandingOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSettingsBrandingOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class AccountSettingsBrandingOptions : INestedOptions
         /// for the account. Must be square and at least 128px x 128px.
         /// </summary>
         [JsonProperty("icon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("icon")]
+#endif
         public string Icon { get; set; }
 
         /// <summary>
@@ -18,18 +24,27 @@ public class AccountSettingsBrandingOptions : INestedOptions
         /// account's name next to it if provided. Must be at least 128px x 128px.
         /// </summary>
         [JsonProperty("logo")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("logo")]
+#endif
         public string Logo { get; set; }
 
         /// <summary>
         /// A CSS hex color value representing the primary branding color for this account.
         /// </summary>
         [JsonProperty("primary_color")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("primary_color")]
+#endif
         public string PrimaryColor { get; set; }
 
         /// <summary>
         /// A CSS hex color value representing the secondary branding color for this account.
         /// </summary>
         [JsonProperty("secondary_color")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("secondary_color")]
+#endif
         public string SecondaryColor { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountSettingsCardIssuingOptions.cs b/src/Stripe.net/Services/Accounts/AccountSettingsCardIssuingOptions.cs
index aefb939883..9f775b8296 100644
--- a/src/Stripe.net/Services/Accounts/AccountSettingsCardIssuingOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountSettingsCardIssuingOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSettingsCardIssuingOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountSettingsCardIssuingOptions : INestedOptions
         /// Disclosures</a>.
         /// </summary>
         [JsonProperty("tos_acceptance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tos_acceptance")]
+#endif
         public AccountSettingsCardIssuingTosAcceptanceOptions TosAcceptance { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountSettingsCardIssuingTosAcceptanceOptions.cs b/src/Stripe.net/Services/Accounts/AccountSettingsCardIssuingTosAcceptanceOptions.cs
index 52a390093c..0973b07136 100644
--- a/src/Stripe.net/Services/Accounts/AccountSettingsCardIssuingTosAcceptanceOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountSettingsCardIssuingTosAcceptanceOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSettingsCardIssuingTosAcceptanceOptions : INestedOptions
     {
@@ -13,12 +16,19 @@ public class AccountSettingsCardIssuingTosAcceptanceOptions : INestedOptions
         /// </summary>
         [JsonProperty("date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? Date { get; set; }
 
         /// <summary>
         /// The IP address from which the account representative accepted the service agreement.
         /// </summary>
         [JsonProperty("ip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip")]
+#endif
         public string Ip { get; set; }
 
         /// <summary>
@@ -26,6 +36,9 @@ public class AccountSettingsCardIssuingTosAcceptanceOptions : INestedOptions
         /// agreement.
         /// </summary>
         [JsonProperty("user_agent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_agent")]
+#endif
         public string UserAgent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountSettingsCardPaymentsDeclineOnOptions.cs b/src/Stripe.net/Services/Accounts/AccountSettingsCardPaymentsDeclineOnOptions.cs
index 97e5d2f0d9..c94637c2c0 100644
--- a/src/Stripe.net/Services/Accounts/AccountSettingsCardPaymentsDeclineOnOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountSettingsCardPaymentsDeclineOnOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSettingsCardPaymentsDeclineOnOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountSettingsCardPaymentsDeclineOnOptions : INestedOptions
         /// verification.
         /// </summary>
         [JsonProperty("avs_failure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("avs_failure")]
+#endif
         public bool? AvsFailure { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class AccountSettingsCardPaymentsDeclineOnOptions : INestedOptions
         /// applies when a CVC is provided and it fails bank verification.
         /// </summary>
         [JsonProperty("cvc_failure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cvc_failure")]
+#endif
         public bool? CvcFailure { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountSettingsCardPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountSettingsCardPaymentsOptions.cs
index be62d1847d..7431c1d997 100644
--- a/src/Stripe.net/Services/Accounts/AccountSettingsCardPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountSettingsCardPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSettingsCardPaymentsOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class AccountSettingsCardPaymentsOptions : INestedOptions
         /// accepted or declined the charge.
         /// </summary>
         [JsonProperty("decline_on")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("decline_on")]
+#endif
         public AccountSettingsCardPaymentsDeclineOnOptions DeclineOn { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class AccountSettingsCardPaymentsOptions : INestedOptions
         /// dynamic portion.
         /// </summary>
         [JsonProperty("statement_descriptor_prefix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_prefix")]
+#endif
         public string StatementDescriptorPrefix { get; set; }
 
         /// <summary>
@@ -29,6 +38,9 @@ public class AccountSettingsCardPaymentsOptions : INestedOptions
         /// the dynamic portion.
         /// </summary>
         [JsonProperty("statement_descriptor_prefix_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_prefix_kana")]
+#endif
         public string StatementDescriptorPrefixKana { get; set; }
 
         /// <summary>
@@ -39,6 +51,9 @@ public class AccountSettingsCardPaymentsOptions : INestedOptions
         /// the dynamic portion.
         /// </summary>
         [JsonProperty("statement_descriptor_prefix_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_prefix_kanji")]
+#endif
         public string StatementDescriptorPrefixKanji { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountSettingsInvoicesOptions.cs b/src/Stripe.net/Services/Accounts/AccountSettingsInvoicesOptions.cs
index b5522c09af..edbed5cbe6 100644
--- a/src/Stripe.net/Services/Accounts/AccountSettingsInvoicesOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountSettingsInvoicesOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSettingsInvoicesOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AccountSettingsInvoicesOptions : INestedOptions
         /// IDs get added when an invoice is finalized.
         /// </summary>
         [JsonProperty("default_account_tax_ids")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_account_tax_ids")]
+#endif
         public List<string> DefaultAccountTaxIds { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountSettingsOptions.cs b/src/Stripe.net/Services/Accounts/AccountSettingsOptions.cs
index 651052619b..cfa9e61ac1 100644
--- a/src/Stripe.net/Services/Accounts/AccountSettingsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountSettingsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSettingsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class AccountSettingsOptions : INestedOptions
         /// Settings specific to Bacs Direct Debit payments.
         /// </summary>
         [JsonProperty("bacs_debit_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bacs_debit_payments")]
+#endif
         public AccountSettingsBacsDebitPaymentsOptions BacsDebitPayments { get; set; }
 
         /// <summary>
@@ -16,42 +22,63 @@ public class AccountSettingsOptions : INestedOptions
         /// other products.
         /// </summary>
         [JsonProperty("branding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("branding")]
+#endif
         public AccountSettingsBrandingOptions Branding { get; set; }
 
         /// <summary>
         /// Settings specific to the account's use of the Card Issuing product.
         /// </summary>
         [JsonProperty("card_issuing")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_issuing")]
+#endif
         public AccountSettingsCardIssuingOptions CardIssuing { get; set; }
 
         /// <summary>
         /// Settings specific to card charging on the account.
         /// </summary>
         [JsonProperty("card_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_payments")]
+#endif
         public AccountSettingsCardPaymentsOptions CardPayments { get; set; }
 
         /// <summary>
         /// Settings specific to the account's use of Invoices.
         /// </summary>
         [JsonProperty("invoices")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoices")]
+#endif
         public AccountSettingsInvoicesOptions Invoices { get; set; }
 
         /// <summary>
         /// Settings that apply across payment methods for charging on the account.
         /// </summary>
         [JsonProperty("payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payments")]
+#endif
         public AccountSettingsPaymentsOptions Payments { get; set; }
 
         /// <summary>
         /// Settings specific to the account's payouts.
         /// </summary>
         [JsonProperty("payouts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payouts")]
+#endif
         public AccountSettingsPayoutsOptions Payouts { get; set; }
 
         /// <summary>
         /// Settings specific to the account's Treasury FinancialAccounts.
         /// </summary>
         [JsonProperty("treasury")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("treasury")]
+#endif
         public AccountSettingsTreasuryOptions Treasury { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountSettingsPaymentsOptions.cs b/src/Stripe.net/Services/Accounts/AccountSettingsPaymentsOptions.cs
index 1d3b74f6dd..94fc683e9c 100644
--- a/src/Stripe.net/Services/Accounts/AccountSettingsPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountSettingsPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSettingsPaymentsOptions : INestedOptions
     {
@@ -16,6 +19,9 @@ public class AccountSettingsPaymentsOptions : INestedOptions
         /// settings documentation</a>.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
 
         /// <summary>
@@ -25,6 +31,9 @@ public class AccountSettingsPaymentsOptions : INestedOptions
         /// requirements</a>.
         /// </summary>
         [JsonProperty("statement_descriptor_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_kana")]
+#endif
         public string StatementDescriptorKana { get; set; }
 
         /// <summary>
@@ -34,6 +43,9 @@ public class AccountSettingsPaymentsOptions : INestedOptions
         /// requirements</a>.
         /// </summary>
         [JsonProperty("statement_descriptor_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_kanji")]
+#endif
         public string StatementDescriptorKanji { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountSettingsPayoutsOptions.cs b/src/Stripe.net/Services/Accounts/AccountSettingsPayoutsOptions.cs
index 586a32f62c..28d62dcb0c 100644
--- a/src/Stripe.net/Services/Accounts/AccountSettingsPayoutsOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountSettingsPayoutsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSettingsPayoutsOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class AccountSettingsPayoutsOptions : INestedOptions
         /// Balances</a>.
         /// </summary>
         [JsonProperty("debit_negative_balances")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("debit_negative_balances")]
+#endif
         public bool? DebitNegativeBalances { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class AccountSettingsPayoutsOptions : INestedOptions
         /// Debit Card Payouts</a> documentation.
         /// </summary>
         [JsonProperty("schedule")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("schedule")]
+#endif
         public AccountSettingsPayoutsScheduleOptions Schedule { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class AccountSettingsPayoutsOptions : INestedOptions
         /// defaults to the platform's bank descriptor as set in the Dashboard.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountSettingsPayoutsScheduleOptions.cs b/src/Stripe.net/Services/Accounts/AccountSettingsPayoutsScheduleOptions.cs
index 4e8821abc5..8e8a387056 100644
--- a/src/Stripe.net/Services/Accounts/AccountSettingsPayoutsScheduleOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountSettingsPayoutsScheduleOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSettingsPayoutsScheduleOptions : INestedOptions
     {
@@ -16,6 +19,10 @@ public class AccountSettingsPayoutsScheduleOptions : INestedOptions
         /// </summary>
         [JsonProperty("delay_days")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("delay_days")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<long?, AccountSettingsPayoutsScheduleDelayDays> DelayDays { get; set; }
 
         /// <summary>
@@ -24,6 +31,9 @@ public class AccountSettingsPayoutsScheduleOptions : INestedOptions
         /// One of: <c>daily</c>, <c>manual</c>, <c>monthly</c>, or <c>weekly</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
 
         /// <summary>
@@ -33,6 +43,9 @@ public class AccountSettingsPayoutsScheduleOptions : INestedOptions
         /// is <c>monthly</c>.
         /// </summary>
         [JsonProperty("monthly_anchor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("monthly_anchor")]
+#endif
         public long? MonthlyAnchor { get; set; }
 
         /// <summary>
@@ -42,6 +55,9 @@ public class AccountSettingsPayoutsScheduleOptions : INestedOptions
         /// <c>tuesday</c>, or <c>wednesday</c>.
         /// </summary>
         [JsonProperty("weekly_anchor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("weekly_anchor")]
+#endif
         public string WeeklyAnchor { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountSettingsTreasuryOptions.cs b/src/Stripe.net/Services/Accounts/AccountSettingsTreasuryOptions.cs
index 89c98844da..dda28ff296 100644
--- a/src/Stripe.net/Services/Accounts/AccountSettingsTreasuryOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountSettingsTreasuryOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSettingsTreasuryOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class AccountSettingsTreasuryOptions : INestedOptions
         /// Details on the account's acceptance of the Stripe Treasury Services Agreement.
         /// </summary>
         [JsonProperty("tos_acceptance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tos_acceptance")]
+#endif
         public AccountSettingsTreasuryTosAcceptanceOptions TosAcceptance { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountSettingsTreasuryTosAcceptanceOptions.cs b/src/Stripe.net/Services/Accounts/AccountSettingsTreasuryTosAcceptanceOptions.cs
index 082713e1dd..9543e65d78 100644
--- a/src/Stripe.net/Services/Accounts/AccountSettingsTreasuryTosAcceptanceOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountSettingsTreasuryTosAcceptanceOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSettingsTreasuryTosAcceptanceOptions : INestedOptions
     {
@@ -13,12 +16,19 @@ public class AccountSettingsTreasuryTosAcceptanceOptions : INestedOptions
         /// </summary>
         [JsonProperty("date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? Date { get; set; }
 
         /// <summary>
         /// The IP address from which the account representative accepted the service agreement.
         /// </summary>
         [JsonProperty("ip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip")]
+#endif
         public string Ip { get; set; }
 
         /// <summary>
@@ -26,6 +36,9 @@ public class AccountSettingsTreasuryTosAcceptanceOptions : INestedOptions
         /// agreement.
         /// </summary>
         [JsonProperty("user_agent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_agent")]
+#endif
         public string UserAgent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountTosAcceptanceOptions.cs b/src/Stripe.net/Services/Accounts/AccountTosAcceptanceOptions.cs
index 83a0d41ec0..13e65d7644 100644
--- a/src/Stripe.net/Services/Accounts/AccountTosAcceptanceOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountTosAcceptanceOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountTosAcceptanceOptions : INestedOptions
     {
@@ -13,18 +16,28 @@ public class AccountTosAcceptanceOptions : INestedOptions
         /// </summary>
         [JsonProperty("date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? Date { get; set; }
 
         /// <summary>
         /// The IP address from which the account representative accepted their service agreement.
         /// </summary>
         [JsonProperty("ip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip")]
+#endif
         public string Ip { get; set; }
 
         /// <summary>
         /// The user's service agreement type.
         /// </summary>
         [JsonProperty("service_agreement")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("service_agreement")]
+#endif
         public string ServiceAgreement { get; set; }
 
         /// <summary>
@@ -32,6 +45,9 @@ public class AccountTosAcceptanceOptions : INestedOptions
         /// service agreement.
         /// </summary>
         [JsonProperty("user_agent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_agent")]
+#endif
         public string UserAgent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/AccountUpdateOptions.cs b/src/Stripe.net/Services/Accounts/AccountUpdateOptions.cs
index 52f4a54806..f6e0e36d08 100644
--- a/src/Stripe.net/Services/Accounts/AccountUpdateOptions.cs
+++ b/src/Stripe.net/Services/Accounts/AccountUpdateOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -12,12 +15,18 @@ public class AccountUpdateOptions : BaseOptions, IHasMetadata
         /// securely provide details to the account.
         /// </summary>
         [JsonProperty("account_token")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_token")]
+#endif
         public string AccountToken { get; set; }
 
         /// <summary>
         /// Business information about the account.
         /// </summary>
         [JsonProperty("business_profile")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("business_profile")]
+#endif
         public AccountBusinessProfileOptions BusinessProfile { get; set; }
 
         /// <summary>
@@ -31,6 +40,9 @@ public class AccountUpdateOptions : BaseOptions, IHasMetadata
         /// <c>non_profit</c>.
         /// </summary>
         [JsonProperty("business_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("business_type")]
+#endif
         public string BusinessType { get; set; }
 
         /// <summary>
@@ -44,6 +56,9 @@ public class AccountUpdateOptions : BaseOptions, IHasMetadata
         /// is <c>none</c>, which includes Custom accounts.
         /// </summary>
         [JsonProperty("capabilities")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capabilities")]
+#endif
         public AccountCapabilitiesOptions Capabilities { get; set; }
 
         /// <summary>
@@ -56,6 +71,9 @@ public class AccountUpdateOptions : BaseOptions, IHasMetadata
         /// is <c>application</c>, which includes Custom accounts.
         /// </summary>
         [JsonProperty("company")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("company")]
+#endif
         public AccountCompanyOptions Company { get; set; }
 
         /// <summary>
@@ -64,12 +82,18 @@ public class AccountUpdateOptions : BaseOptions, IHasMetadata
         /// account's country</a>.
         /// </summary>
         [JsonProperty("default_currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_currency")]
+#endif
         public string DefaultCurrency { get; set; }
 
         /// <summary>
         /// Documents that may be submitted to satisfy various informational requests.
         /// </summary>
         [JsonProperty("documents")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("documents")]
+#endif
         public AccountDocumentsOptions Documents { get; set; }
 
         /// <summary>
@@ -80,6 +104,9 @@ public class AccountUpdateOptions : BaseOptions, IHasMetadata
         /// without your consent.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
@@ -102,6 +129,10 @@ public class AccountUpdateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("external_account")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("external_account")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<string, AccountBankAccountOptions, AccountCardOptions> ExternalAccount { get; set; }
 
         /// <summary>
@@ -109,6 +140,9 @@ public class AccountUpdateOptions : BaseOptions, IHasMetadata
         /// added to.
         /// </summary>
         [JsonProperty("groups")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("groups")]
+#endif
         public AccountGroupsOptions Groups { get; set; }
 
         /// <summary>
@@ -121,6 +155,9 @@ public class AccountUpdateOptions : BaseOptions, IHasMetadata
         /// is <c>application</c>, which includes Custom accounts.
         /// </summary>
         [JsonProperty("individual")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("individual")]
+#endif
         public AccountIndividualOptions Individual { get; set; }
 
         /// <summary>
@@ -130,12 +167,18 @@ public class AccountUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Options for customizing how the account functions within Stripe.
         /// </summary>
         [JsonProperty("settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("settings")]
+#endif
         public AccountSettingsOptions Settings { get; set; }
 
         /// <summary>
@@ -147,6 +190,9 @@ public class AccountUpdateOptions : BaseOptions, IHasMetadata
         /// <c>full</c> service agreement when empty.
         /// </summary>
         [JsonProperty("tos_acceptance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tos_acceptance")]
+#endif
         public AccountTosAcceptanceOptions TosAcceptance { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Accounts/DobOptions.cs b/src/Stripe.net/Services/Accounts/DobOptions.cs
index 8d0a31ebf5..8275d17bc6 100644
--- a/src/Stripe.net/Services/Accounts/DobOptions.cs
+++ b/src/Stripe.net/Services/Accounts/DobOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DobOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class DobOptions : INestedOptions
         /// The day of birth, between 1 and 31.
         /// </summary>
         [JsonProperty("day")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("day")]
+#endif
         public long? Day { get; set; }
 
         /// <summary>
         /// The month of birth, between 1 and 12.
         /// </summary>
         [JsonProperty("month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("month")]
+#endif
         public long? Month { get; set; }
 
         /// <summary>
         /// The four-digit year of birth.
         /// </summary>
         [JsonProperty("year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("year")]
+#endif
         public long? Year { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/ApplePayDomains/ApplePayDomainCreateOptions.cs b/src/Stripe.net/Services/ApplePayDomains/ApplePayDomainCreateOptions.cs
index 9d2f60387d..cf15baf69f 100644
--- a/src/Stripe.net/Services/ApplePayDomains/ApplePayDomainCreateOptions.cs
+++ b/src/Stripe.net/Services/ApplePayDomains/ApplePayDomainCreateOptions.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ApplePayDomainCreateOptions : BaseOptions
     {
         [JsonProperty("domain_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("domain_name")]
+#endif
         public string DomainName { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/ApplePayDomains/ApplePayDomainListOptions.cs b/src/Stripe.net/Services/ApplePayDomains/ApplePayDomainListOptions.cs
index 226d018488..c0b7dceb14 100644
--- a/src/Stripe.net/Services/ApplePayDomains/ApplePayDomainListOptions.cs
+++ b/src/Stripe.net/Services/ApplePayDomains/ApplePayDomainListOptions.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ApplePayDomainListOptions : ListOptions
     {
         [JsonProperty("domain_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("domain_name")]
+#endif
         public string DomainName { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/ApplePayDomains/ApplePayDomainService.cs b/src/Stripe.net/Services/ApplePayDomains/ApplePayDomainService.cs
index 031ec3e743..98d1676383 100644
--- a/src/Stripe.net/Services/ApplePayDomains/ApplePayDomainService.cs
+++ b/src/Stripe.net/Services/ApplePayDomains/ApplePayDomainService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class ApplePayDomainService : Service<ApplePayDomain>,
+    public class ApplePayDomainService : Service,
         ICreatable<ApplePayDomain, ApplePayDomainCreateOptions>,
         IDeletable<ApplePayDomain, ApplePayDomainDeleteOptions>,
         IListable<ApplePayDomain, ApplePayDomainListOptions>,
diff --git a/src/Stripe.net/Services/ApplicationFeeRefunds/ApplicationFeeRefundCreateOptions.cs b/src/Stripe.net/Services/ApplicationFeeRefunds/ApplicationFeeRefundCreateOptions.cs
index 8eeb6307a7..07e16a1c87 100644
--- a/src/Stripe.net/Services/ApplicationFeeRefunds/ApplicationFeeRefundCreateOptions.cs
+++ b/src/Stripe.net/Services/ApplicationFeeRefunds/ApplicationFeeRefundCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ApplicationFeeRefundCreateOptions : BaseOptions, IHasMetadata
     {
@@ -11,6 +14,9 @@ public class ApplicationFeeRefundCreateOptions : BaseOptions, IHasMetadata
         /// this fee to refund. Can refund only up to the remaining unrefunded amount of the fee.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class ApplicationFeeRefundCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/ApplicationFeeRefunds/ApplicationFeeRefundService.cs b/src/Stripe.net/Services/ApplicationFeeRefunds/ApplicationFeeRefundService.cs
index 6ce7ad3003..93aeba58b7 100644
--- a/src/Stripe.net/Services/ApplicationFeeRefunds/ApplicationFeeRefundService.cs
+++ b/src/Stripe.net/Services/ApplicationFeeRefunds/ApplicationFeeRefundService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class ApplicationFeeRefundService : ServiceNested<ApplicationFeeRefund>,
+    public class ApplicationFeeRefundService : Service,
         INestedCreatable<ApplicationFeeRefund, ApplicationFeeRefundCreateOptions>,
         INestedListable<ApplicationFeeRefund, ApplicationFeeRefundListOptions>,
         INestedRetrievable<ApplicationFeeRefund, ApplicationFeeRefundGetOptions>,
diff --git a/src/Stripe.net/Services/ApplicationFeeRefunds/ApplicationFeeRefundUpdateOptions.cs b/src/Stripe.net/Services/ApplicationFeeRefunds/ApplicationFeeRefundUpdateOptions.cs
index c16d4b737c..0e55e9761f 100644
--- a/src/Stripe.net/Services/ApplicationFeeRefunds/ApplicationFeeRefundUpdateOptions.cs
+++ b/src/Stripe.net/Services/ApplicationFeeRefunds/ApplicationFeeRefundUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ApplicationFeeRefundUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -13,6 +16,9 @@ public class ApplicationFeeRefundUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/ApplicationFees/ApplicationFeeListOptions.cs b/src/Stripe.net/Services/ApplicationFees/ApplicationFeeListOptions.cs
index 7276f3ebef..782b453170 100644
--- a/src/Stripe.net/Services/ApplicationFees/ApplicationFeeListOptions.cs
+++ b/src/Stripe.net/Services/ApplicationFees/ApplicationFeeListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ApplicationFeeListOptions : ListOptionsWithCreated
     {
@@ -9,6 +12,9 @@ public class ApplicationFeeListOptions : ListOptionsWithCreated
         /// Only return application fees for the charge specified by this charge ID.
         /// </summary>
         [JsonProperty("charge")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("charge")]
+#endif
         public string Charge { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/ApplicationFees/ApplicationFeeService.cs b/src/Stripe.net/Services/ApplicationFees/ApplicationFeeService.cs
index 435f9e66f8..24409c541c 100644
--- a/src/Stripe.net/Services/ApplicationFees/ApplicationFeeService.cs
+++ b/src/Stripe.net/Services/ApplicationFees/ApplicationFeeService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class ApplicationFeeService : Service<ApplicationFee>,
+    public class ApplicationFeeService : Service,
         IListable<ApplicationFee, ApplicationFeeListOptions>,
         IRetrievable<ApplicationFee, ApplicationFeeGetOptions>
     {
diff --git a/src/Stripe.net/Services/Apps/Secrets/SecretCreateOptions.cs b/src/Stripe.net/Services/Apps/Secrets/SecretCreateOptions.cs
index 47a3c8858e..6115178901 100644
--- a/src/Stripe.net/Services/Apps/Secrets/SecretCreateOptions.cs
+++ b/src/Stripe.net/Services/Apps/Secrets/SecretCreateOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe.Apps
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SecretCreateOptions : BaseOptions
     {
@@ -12,18 +15,28 @@ public class SecretCreateOptions : BaseOptions
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpiresAt { get; set; }
 
         /// <summary>
         /// A name for the secret that's unique within the scope.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// The plaintext secret value to be stored.
         /// </summary>
         [JsonProperty("payload")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payload")]
+#endif
         public string Payload { get; set; }
 
         /// <summary>
@@ -31,6 +44,9 @@ public class SecretCreateOptions : BaseOptions
         /// access account-scoped secrets or secrets scoped to their own user.
         /// </summary>
         [JsonProperty("scope")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("scope")]
+#endif
         public SecretScopeOptions Scope { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Apps/Secrets/SecretDeleteWhereOptions.cs b/src/Stripe.net/Services/Apps/Secrets/SecretDeleteWhereOptions.cs
index d363e1f85c..3e5ef8901d 100644
--- a/src/Stripe.net/Services/Apps/Secrets/SecretDeleteWhereOptions.cs
+++ b/src/Stripe.net/Services/Apps/Secrets/SecretDeleteWhereOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Apps
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SecretDeleteWhereOptions : BaseOptions
     {
@@ -9,6 +12,9 @@ public class SecretDeleteWhereOptions : BaseOptions
         /// A name for the secret that's unique within the scope.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class SecretDeleteWhereOptions : BaseOptions
         /// access account-scoped secrets or secrets scoped to their own user.
         /// </summary>
         [JsonProperty("scope")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("scope")]
+#endif
         public SecretScopeOptions Scope { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Apps/Secrets/SecretFindOptions.cs b/src/Stripe.net/Services/Apps/Secrets/SecretFindOptions.cs
index 72199316be..f59557d27b 100644
--- a/src/Stripe.net/Services/Apps/Secrets/SecretFindOptions.cs
+++ b/src/Stripe.net/Services/Apps/Secrets/SecretFindOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Apps
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SecretFindOptions : BaseOptions
     {
@@ -9,6 +12,9 @@ public class SecretFindOptions : BaseOptions
         /// A name for the secret that's unique within the scope.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class SecretFindOptions : BaseOptions
         /// access account-scoped secrets or secrets scoped to their own user.
         /// </summary>
         [JsonProperty("scope")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("scope")]
+#endif
         public SecretScopeOptions Scope { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Apps/Secrets/SecretListOptions.cs b/src/Stripe.net/Services/Apps/Secrets/SecretListOptions.cs
index a9eea4fa09..d5e1a48f60 100644
--- a/src/Stripe.net/Services/Apps/Secrets/SecretListOptions.cs
+++ b/src/Stripe.net/Services/Apps/Secrets/SecretListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Apps
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SecretListOptions : ListOptions
     {
@@ -10,6 +13,9 @@ public class SecretListOptions : ListOptions
         /// access account-scoped secrets or secrets scoped to their own user.
         /// </summary>
         [JsonProperty("scope")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("scope")]
+#endif
         public SecretScopeOptions Scope { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Apps/Secrets/SecretScopeOptions.cs b/src/Stripe.net/Services/Apps/Secrets/SecretScopeOptions.cs
index b149af4e58..c9a8408033 100644
--- a/src/Stripe.net/Services/Apps/Secrets/SecretScopeOptions.cs
+++ b/src/Stripe.net/Services/Apps/Secrets/SecretScopeOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Apps
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SecretScopeOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SecretScopeOptions : INestedOptions
         /// One of: <c>account</c>, or <c>user</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class SecretScopeOptions : INestedOptions
         /// be provided if <c>type</c> is set to <c>account</c>.
         /// </summary>
         [JsonProperty("user")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user")]
+#endif
         public string User { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Apps/Secrets/SecretService.cs b/src/Stripe.net/Services/Apps/Secrets/SecretService.cs
index dc77c26a36..3428895de3 100644
--- a/src/Stripe.net/Services/Apps/Secrets/SecretService.cs
+++ b/src/Stripe.net/Services/Apps/Secrets/SecretService.cs
@@ -7,7 +7,7 @@ namespace Stripe.Apps
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class SecretService : Service<Secret>,
+    public class SecretService : Service,
         ICreatable<Secret, SecretCreateOptions>,
         IListable<Secret, SecretListOptions>
     {
diff --git a/src/Stripe.net/Services/BalanceTransactions/BalanceTransactionListOptions.cs b/src/Stripe.net/Services/BalanceTransactions/BalanceTransactionListOptions.cs
index 9fb2721d5f..a71aac972c 100644
--- a/src/Stripe.net/Services/BalanceTransactions/BalanceTransactionListOptions.cs
+++ b/src/Stripe.net/Services/BalanceTransactions/BalanceTransactionListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class BalanceTransactionListOptions : ListOptionsWithCreated
     {
@@ -12,6 +15,9 @@ public class BalanceTransactionListOptions : ListOptionsWithCreated
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -19,12 +25,18 @@ public class BalanceTransactionListOptions : ListOptionsWithCreated
         /// specified payout ID.
         /// </summary>
         [JsonProperty("payout")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payout")]
+#endif
         public string Payout { get; set; }
 
         /// <summary>
         /// Only returns the original transaction.
         /// </summary>
         [JsonProperty("source")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source")]
+#endif
         public string Source { get; set; }
 
         /// <summary>
@@ -45,6 +57,9 @@ public class BalanceTransactionListOptions : ListOptionsWithCreated
         /// or <c>transfer_refund</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BalanceTransactions/BalanceTransactionService.cs b/src/Stripe.net/Services/BalanceTransactions/BalanceTransactionService.cs
index 187ef36f95..9a2bfcb22f 100644
--- a/src/Stripe.net/Services/BalanceTransactions/BalanceTransactionService.cs
+++ b/src/Stripe.net/Services/BalanceTransactions/BalanceTransactionService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class BalanceTransactionService : Service<BalanceTransaction>,
+    public class BalanceTransactionService : Service,
         IListable<BalanceTransaction, BalanceTransactionListOptions>,
         IRetrievable<BalanceTransaction, BalanceTransactionGetOptions>
     {
diff --git a/src/Stripe.net/Services/Balances/BalanceService.cs b/src/Stripe.net/Services/Balances/BalanceService.cs
index dfb91a39d7..0489f7ceb5 100644
--- a/src/Stripe.net/Services/Balances/BalanceService.cs
+++ b/src/Stripe.net/Services/Balances/BalanceService.cs
@@ -6,8 +6,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class BalanceService : Service<Balance>,
-        ISingletonRetrievable<Balance>
+    public class BalanceService : Service, ISingletonRetrievable<Balance>
     {
         public BalanceService()
         {
diff --git a/src/Stripe.net/Services/BankAccounts/BankAccountCreateOptions.cs b/src/Stripe.net/Services/BankAccounts/BankAccountCreateOptions.cs
index 1e4dd9a03d..921e3f10df 100644
--- a/src/Stripe.net/Services/BankAccounts/BankAccountCreateOptions.cs
+++ b/src/Stripe.net/Services/BankAccounts/BankAccountCreateOptions.cs
@@ -2,15 +2,26 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
+
     using Stripe.Infrastructure;
 
     public class BankAccountCreateOptions : BaseOptions, IHasMetadata
     {
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         [JsonProperty("source")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<string, SourceBankAccount> Source { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BankAccounts/BankAccountDocumentsBankAccountOwnershipVerificationOptions.cs b/src/Stripe.net/Services/BankAccounts/BankAccountDocumentsBankAccountOwnershipVerificationOptions.cs
index 8f62d580f2..f44274c84c 100644
--- a/src/Stripe.net/Services/BankAccounts/BankAccountDocumentsBankAccountOwnershipVerificationOptions.cs
+++ b/src/Stripe.net/Services/BankAccounts/BankAccountDocumentsBankAccountOwnershipVerificationOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class BankAccountDocumentsBankAccountOwnershipVerificationOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class BankAccountDocumentsBankAccountOwnershipVerificationOptions : INest
         /// value of <c>account_requirement</c>.
         /// </summary>
         [JsonProperty("files")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("files")]
+#endif
         public List<string> Files { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BankAccounts/BankAccountDocumentsOptions.cs b/src/Stripe.net/Services/BankAccounts/BankAccountDocumentsOptions.cs
index 9295c3a8c0..8a164b8cf1 100644
--- a/src/Stripe.net/Services/BankAccounts/BankAccountDocumentsOptions.cs
+++ b/src/Stripe.net/Services/BankAccounts/BankAccountDocumentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class BankAccountDocumentsOptions : INestedOptions
     {
@@ -13,6 +16,9 @@ public class BankAccountDocumentsOptions : INestedOptions
         /// or a check.
         /// </summary>
         [JsonProperty("bank_account_ownership_verification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_account_ownership_verification")]
+#endif
         public BankAccountDocumentsBankAccountOwnershipVerificationOptions BankAccountOwnershipVerification { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BankAccounts/BankAccountListOptions.cs b/src/Stripe.net/Services/BankAccounts/BankAccountListOptions.cs
index 022f5fdefa..d54d0121b2 100644
--- a/src/Stripe.net/Services/BankAccounts/BankAccountListOptions.cs
+++ b/src/Stripe.net/Services/BankAccounts/BankAccountListOptions.cs
@@ -1,10 +1,20 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using Stripe.Infrastructure;
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class BankAccountListOptions : ListOptions
     {
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         internal string Object => "bank_account";
     }
 }
diff --git a/src/Stripe.net/Services/BankAccounts/BankAccountUpdateOptions.cs b/src/Stripe.net/Services/BankAccounts/BankAccountUpdateOptions.cs
index 1fa8139288..bfd1c2cc91 100644
--- a/src/Stripe.net/Services/BankAccounts/BankAccountUpdateOptions.cs
+++ b/src/Stripe.net/Services/BankAccounts/BankAccountUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class BankAccountUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -10,6 +13,9 @@ public class BankAccountUpdateOptions : BaseOptions, IHasMetadata
         /// The name of the person or business that owns the bank account.
         /// </summary>
         [JsonProperty("account_holder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_name")]
+#endif
         public string AccountHolderName { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class BankAccountUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>company</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("account_holder_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_type")]
+#endif
         public string AccountHolderType { get; set; }
 
         /// <summary>
@@ -26,12 +35,18 @@ public class BankAccountUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>checking</c>, <c>futsu</c>, <c>savings</c>, or <c>toza</c>.
         /// </summary>
         [JsonProperty("account_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_type")]
+#endif
         public string AccountType { get; set; }
 
         /// <summary>
         /// Documents that may be submitted to satisfy various informational requests.
         /// </summary>
         [JsonProperty("documents")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("documents")]
+#endif
         public BankAccountDocumentsOptions Documents { get; set; }
 
         /// <summary>
@@ -41,6 +56,9 @@ public class BankAccountUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BankAccounts/BankAccountVerifyOptions.cs b/src/Stripe.net/Services/BankAccounts/BankAccountVerifyOptions.cs
index 902bb486d0..55ddff4b47 100644
--- a/src/Stripe.net/Services/BankAccounts/BankAccountVerifyOptions.cs
+++ b/src/Stripe.net/Services/BankAccounts/BankAccountVerifyOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class BankAccountVerifyOptions : BaseOptions
     {
@@ -11,6 +14,9 @@ public class BankAccountVerifyOptions : BaseOptions
         /// to the bank account.
         /// </summary>
         [JsonProperty("amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amounts")]
+#endif
         public List<long> Amounts { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Billing/Alerts/AlertCreateOptions.cs b/src/Stripe.net/Services/Billing/Alerts/AlertCreateOptions.cs
index 023ac5c210..ad5897476a 100644
--- a/src/Stripe.net/Services/Billing/Alerts/AlertCreateOptions.cs
+++ b/src/Stripe.net/Services/Billing/Alerts/AlertCreateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AlertCreateOptions : BaseOptions
     {
@@ -9,18 +12,27 @@ public class AlertCreateOptions : BaseOptions
         /// The type of alert to create.
         /// </summary>
         [JsonProperty("alert_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alert_type")]
+#endif
         public string AlertType { get; set; }
 
         /// <summary>
         /// The title of the alert.
         /// </summary>
         [JsonProperty("title")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("title")]
+#endif
         public string Title { get; set; }
 
         /// <summary>
         /// The configuration of the usage threshold.
         /// </summary>
         [JsonProperty("usage_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("usage_threshold")]
+#endif
         public AlertUsageThresholdOptions UsageThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Billing/Alerts/AlertListOptions.cs b/src/Stripe.net/Services/Billing/Alerts/AlertListOptions.cs
index b088e01bb2..c6c95a2c2e 100644
--- a/src/Stripe.net/Services/Billing/Alerts/AlertListOptions.cs
+++ b/src/Stripe.net/Services/Billing/Alerts/AlertListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AlertListOptions : ListOptions
     {
@@ -9,12 +12,18 @@ public class AlertListOptions : ListOptions
         /// Filter results to only include this type of alert.
         /// </summary>
         [JsonProperty("alert_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alert_type")]
+#endif
         public string AlertType { get; set; }
 
         /// <summary>
         /// Filter results to only include alerts with the given meter.
         /// </summary>
         [JsonProperty("meter")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("meter")]
+#endif
         public string Meter { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Billing/Alerts/AlertService.cs b/src/Stripe.net/Services/Billing/Alerts/AlertService.cs
index ca0211d0c1..b2a49479ff 100644
--- a/src/Stripe.net/Services/Billing/Alerts/AlertService.cs
+++ b/src/Stripe.net/Services/Billing/Alerts/AlertService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Billing
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class AlertService : Service<Alert>,
+    public class AlertService : Service,
         ICreatable<Alert, AlertCreateOptions>,
         IListable<Alert, AlertListOptions>,
         IRetrievable<Alert, AlertGetOptions>
diff --git a/src/Stripe.net/Services/Billing/Alerts/AlertUsageThresholdFilterOptions.cs b/src/Stripe.net/Services/Billing/Alerts/AlertUsageThresholdFilterOptions.cs
index 988a304ab0..7d4aa5ba69 100644
--- a/src/Stripe.net/Services/Billing/Alerts/AlertUsageThresholdFilterOptions.cs
+++ b/src/Stripe.net/Services/Billing/Alerts/AlertUsageThresholdFilterOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AlertUsageThresholdFilterOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class AlertUsageThresholdFilterOptions : INestedOptions
         /// Limit the scope to this usage alert only to this customer.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
         /// What type of filter is being applied to this usage alert.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Billing/Alerts/AlertUsageThresholdOptions.cs b/src/Stripe.net/Services/Billing/Alerts/AlertUsageThresholdOptions.cs
index 3b8359cca1..16647366a9 100644
--- a/src/Stripe.net/Services/Billing/Alerts/AlertUsageThresholdOptions.cs
+++ b/src/Stripe.net/Services/Billing/Alerts/AlertUsageThresholdOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Billing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AlertUsageThresholdOptions : INestedOptions
     {
@@ -11,12 +14,18 @@ public class AlertUsageThresholdOptions : INestedOptions
         /// one filter at this time.
         /// </summary>
         [JsonProperty("filters")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("filters")]
+#endif
         public List<AlertUsageThresholdFilterOptions> Filters { get; set; }
 
         /// <summary>
         /// Defines at which value the alert will fire.
         /// </summary>
         [JsonProperty("gte")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gte")]
+#endif
         public long? Gte { get; set; }
 
         /// <summary>
@@ -24,12 +33,18 @@ public class AlertUsageThresholdOptions : INestedOptions
         /// monitored.
         /// </summary>
         [JsonProperty("meter")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("meter")]
+#endif
         public string Meter { get; set; }
 
         /// <summary>
         /// Whether the alert should only fire only once, or once per billing cycle.
         /// </summary>
         [JsonProperty("recurrence")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("recurrence")]
+#endif
         public string Recurrence { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Billing/CreditBalanceSummaries/CreditBalanceSummaryFilterApplicabilityScopeOptions.cs b/src/Stripe.net/Services/Billing/CreditBalanceSummaries/CreditBalanceSummaryFilterApplicabilityScopeOptions.cs
index 89fc866fcd..4aa34e6907 100644
--- a/src/Stripe.net/Services/Billing/CreditBalanceSummaries/CreditBalanceSummaryFilterApplicabilityScopeOptions.cs
+++ b/src/Stripe.net/Services/Billing/CreditBalanceSummaries/CreditBalanceSummaryFilterApplicabilityScopeOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Billing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditBalanceSummaryFilterApplicabilityScopeOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class CreditBalanceSummaryFilterApplicabilityScopeOptions : INestedOption
         /// <c>metered</c> price type.
         /// </summary>
         [JsonProperty("price_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price_type")]
+#endif
         public string PriceType { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class CreditBalanceSummaryFilterApplicabilityScopeOptions : INestedOption
         /// <c>metered</c> prices.
         /// </summary>
         [JsonProperty("prices")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("prices")]
+#endif
         public List<CreditBalanceSummaryFilterApplicabilityScopePriceOptions> Prices { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Billing/CreditBalanceSummaries/CreditBalanceSummaryFilterApplicabilityScopePriceOptions.cs b/src/Stripe.net/Services/Billing/CreditBalanceSummaries/CreditBalanceSummaryFilterApplicabilityScopePriceOptions.cs
index 66cdb248ec..08ec4a4108 100644
--- a/src/Stripe.net/Services/Billing/CreditBalanceSummaries/CreditBalanceSummaryFilterApplicabilityScopePriceOptions.cs
+++ b/src/Stripe.net/Services/Billing/CreditBalanceSummaries/CreditBalanceSummaryFilterApplicabilityScopePriceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditBalanceSummaryFilterApplicabilityScopePriceOptions : INestedOptions, IHasId
     {
@@ -9,6 +12,9 @@ public class CreditBalanceSummaryFilterApplicabilityScopePriceOptions : INestedO
         /// The price ID this credit grant should apply to.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Billing/CreditBalanceSummaries/CreditBalanceSummaryFilterOptions.cs b/src/Stripe.net/Services/Billing/CreditBalanceSummaries/CreditBalanceSummaryFilterOptions.cs
index 64a9f2555b..047ef057ac 100644
--- a/src/Stripe.net/Services/Billing/CreditBalanceSummaries/CreditBalanceSummaryFilterOptions.cs
+++ b/src/Stripe.net/Services/Billing/CreditBalanceSummaries/CreditBalanceSummaryFilterOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditBalanceSummaryFilterOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class CreditBalanceSummaryFilterOptions : INestedOptions
         /// The billing credit applicability scope for which to fetch credit balance summary.
         /// </summary>
         [JsonProperty("applicability_scope")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("applicability_scope")]
+#endif
         public CreditBalanceSummaryFilterApplicabilityScopeOptions ApplicabilityScope { get; set; }
 
         /// <summary>
         /// The credit grant for which to fetch credit balance summary.
         /// </summary>
         [JsonProperty("credit_grant")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("credit_grant")]
+#endif
         public string CreditGrant { get; set; }
 
         /// <summary>
@@ -22,6 +31,9 @@ public class CreditBalanceSummaryFilterOptions : INestedOptions
         /// One of: <c>applicability_scope</c>, or <c>credit_grant</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Billing/CreditBalanceSummaries/CreditBalanceSummaryGetOptions.cs b/src/Stripe.net/Services/Billing/CreditBalanceSummaries/CreditBalanceSummaryGetOptions.cs
index 8b81eefd8a..830e2e5d1b 100644
--- a/src/Stripe.net/Services/Billing/CreditBalanceSummaries/CreditBalanceSummaryGetOptions.cs
+++ b/src/Stripe.net/Services/Billing/CreditBalanceSummaries/CreditBalanceSummaryGetOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditBalanceSummaryGetOptions : BaseOptions
     {
@@ -9,12 +12,18 @@ public class CreditBalanceSummaryGetOptions : BaseOptions
         /// The customer for which to fetch credit balance summary.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
         /// The filter criteria for the credit balance summary.
         /// </summary>
         [JsonProperty("filter")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("filter")]
+#endif
         public CreditBalanceSummaryFilterOptions Filter { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Billing/CreditBalanceSummaries/CreditBalanceSummaryService.cs b/src/Stripe.net/Services/Billing/CreditBalanceSummaries/CreditBalanceSummaryService.cs
index 5691441acf..df54288dda 100644
--- a/src/Stripe.net/Services/Billing/CreditBalanceSummaries/CreditBalanceSummaryService.cs
+++ b/src/Stripe.net/Services/Billing/CreditBalanceSummaries/CreditBalanceSummaryService.cs
@@ -6,7 +6,7 @@ namespace Stripe.Billing
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class CreditBalanceSummaryService : Service<CreditBalanceSummary>,
+    public class CreditBalanceSummaryService : Service,
         ISingletonRetrievable<CreditBalanceSummary>
     {
         public CreditBalanceSummaryService()
diff --git a/src/Stripe.net/Services/Billing/CreditBalanceTransactions/CreditBalanceTransactionListOptions.cs b/src/Stripe.net/Services/Billing/CreditBalanceTransactions/CreditBalanceTransactionListOptions.cs
index 88addf4b6e..ae7eda774d 100644
--- a/src/Stripe.net/Services/Billing/CreditBalanceTransactions/CreditBalanceTransactionListOptions.cs
+++ b/src/Stripe.net/Services/Billing/CreditBalanceTransactions/CreditBalanceTransactionListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditBalanceTransactionListOptions : ListOptions
     {
@@ -9,12 +12,18 @@ public class CreditBalanceTransactionListOptions : ListOptions
         /// The credit grant for which to fetch credit balance transactions.
         /// </summary>
         [JsonProperty("credit_grant")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("credit_grant")]
+#endif
         public string CreditGrant { get; set; }
 
         /// <summary>
         /// The customer for which to fetch credit balance transactions.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Billing/CreditBalanceTransactions/CreditBalanceTransactionService.cs b/src/Stripe.net/Services/Billing/CreditBalanceTransactions/CreditBalanceTransactionService.cs
index 2262dd332b..f02c2b8a8c 100644
--- a/src/Stripe.net/Services/Billing/CreditBalanceTransactions/CreditBalanceTransactionService.cs
+++ b/src/Stripe.net/Services/Billing/CreditBalanceTransactions/CreditBalanceTransactionService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Billing
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class CreditBalanceTransactionService : Service<CreditBalanceTransaction>,
+    public class CreditBalanceTransactionService : Service,
         IListable<CreditBalanceTransaction, CreditBalanceTransactionListOptions>,
         IRetrievable<CreditBalanceTransaction, CreditBalanceTransactionGetOptions>
     {
diff --git a/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantAmountMonetaryOptions.cs b/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantAmountMonetaryOptions.cs
index 75434afaa7..338c4197d3 100644
--- a/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantAmountMonetaryOptions.cs
+++ b/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantAmountMonetaryOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditGrantAmountMonetaryOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class CreditGrantAmountMonetaryOptions : INestedOptions
         /// of the <c>value</c> parameter.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// A positive integer representing the amount of the credit grant.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public long? Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantAmountOptions.cs b/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantAmountOptions.cs
index 0b3f629f7d..a62e0603cd 100644
--- a/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantAmountOptions.cs
+++ b/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantAmountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditGrantAmountOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class CreditGrantAmountOptions : INestedOptions
         /// The monetary amount.
         /// </summary>
         [JsonProperty("monetary")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("monetary")]
+#endif
         public CreditGrantAmountMonetaryOptions Monetary { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class CreditGrantAmountOptions : INestedOptions
         /// credits.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantApplicabilityConfigOptions.cs b/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantApplicabilityConfigOptions.cs
index 687d3ec6d9..7b0b5150f0 100644
--- a/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantApplicabilityConfigOptions.cs
+++ b/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantApplicabilityConfigOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditGrantApplicabilityConfigOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class CreditGrantApplicabilityConfigOptions : INestedOptions
         /// Specify the scope of this applicability config.
         /// </summary>
         [JsonProperty("scope")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("scope")]
+#endif
         public CreditGrantApplicabilityConfigScopeOptions Scope { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantApplicabilityConfigScopeOptions.cs b/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantApplicabilityConfigScopeOptions.cs
index c37813d9ff..b32f358eff 100644
--- a/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantApplicabilityConfigScopeOptions.cs
+++ b/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantApplicabilityConfigScopeOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Billing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditGrantApplicabilityConfigScopeOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class CreditGrantApplicabilityConfigScopeOptions : INestedOptions
         /// <c>metered</c> price type.
         /// </summary>
         [JsonProperty("price_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price_type")]
+#endif
         public string PriceType { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class CreditGrantApplicabilityConfigScopeOptions : INestedOptions
         /// <c>metered</c> prices.
         /// </summary>
         [JsonProperty("prices")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("prices")]
+#endif
         public List<CreditGrantApplicabilityConfigScopePriceOptions> Prices { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantApplicabilityConfigScopePriceOptions.cs b/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantApplicabilityConfigScopePriceOptions.cs
index bcb3d170af..72594698ce 100644
--- a/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantApplicabilityConfigScopePriceOptions.cs
+++ b/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantApplicabilityConfigScopePriceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditGrantApplicabilityConfigScopePriceOptions : INestedOptions, IHasId
     {
@@ -9,6 +12,9 @@ public class CreditGrantApplicabilityConfigScopePriceOptions : INestedOptions, I
         /// The price ID this credit grant should apply to.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantCreateOptions.cs b/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantCreateOptions.cs
index fb9310f036..1299460dc3 100644
--- a/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantCreateOptions.cs
+++ b/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantCreateOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe.Billing
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditGrantCreateOptions : BaseOptions, IHasMetadata
     {
@@ -12,6 +15,9 @@ public class CreditGrantCreateOptions : BaseOptions, IHasMetadata
         /// Amount of this credit grant.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public CreditGrantAmountOptions Amount { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class CreditGrantCreateOptions : BaseOptions, IHasMetadata
         /// href="https://docs.stripe.com/api/billing/meter">Billing Meter</a> attached to them.
         /// </summary>
         [JsonProperty("applicability_config")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("applicability_config")]
+#endif
         public CreditGrantApplicabilityConfigOptions ApplicabilityConfig { get; set; }
 
         /// <summary>
@@ -27,12 +36,18 @@ public class CreditGrantCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>paid</c>, or <c>promotional</c>.
         /// </summary>
         [JsonProperty("category")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("category")]
+#endif
         public string Category { get; set; }
 
         /// <summary>
         /// ID of the customer to receive the billing credits.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
@@ -41,6 +56,10 @@ public class CreditGrantCreateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("effective_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("effective_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? EffectiveAt { get; set; }
 
         /// <summary>
@@ -49,6 +68,10 @@ public class CreditGrantCreateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpiresAt { get; set; }
 
         /// <summary>
@@ -57,12 +80,18 @@ public class CreditGrantCreateOptions : BaseOptions, IHasMetadata
         /// format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// A descriptive name shown in the Dashboard.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -70,6 +99,9 @@ public class CreditGrantCreateOptions : BaseOptions, IHasMetadata
         /// the default value of 50. The highest priority is 0 and the lowest is 100.
         /// </summary>
         [JsonProperty("priority")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("priority")]
+#endif
         public long? Priority { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantListOptions.cs b/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantListOptions.cs
index b487b27ebf..99babbe03d 100644
--- a/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantListOptions.cs
+++ b/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditGrantListOptions : ListOptions
     {
@@ -9,6 +12,9 @@ public class CreditGrantListOptions : ListOptions
         /// Only return credit grants for this customer.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantService.cs b/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantService.cs
index 4e39cccadc..9cce98826d 100644
--- a/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantService.cs
+++ b/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Billing
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class CreditGrantService : Service<CreditGrant>,
+    public class CreditGrantService : Service,
         ICreatable<CreditGrant, CreditGrantCreateOptions>,
         IListable<CreditGrant, CreditGrantListOptions>,
         IRetrievable<CreditGrant, CreditGrantGetOptions>,
diff --git a/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantUpdateOptions.cs b/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantUpdateOptions.cs
index 7a5ca34a62..67feb230db 100644
--- a/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantUpdateOptions.cs
+++ b/src/Stripe.net/Services/Billing/CreditGrants/CreditGrantUpdateOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe.Billing
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditGrantUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -14,6 +17,10 @@ public class CreditGrantUpdateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpiresAt { get; set; }
 
         /// <summary>
@@ -21,6 +28,9 @@ public class CreditGrantUpdateOptions : BaseOptions, IHasMetadata
         /// information about the object (for example, cost basis) in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Billing/MeterEventAdjustments/MeterEventAdjustmentCancelOptions.cs b/src/Stripe.net/Services/Billing/MeterEventAdjustments/MeterEventAdjustmentCancelOptions.cs
index 2553ef0a2c..1423f1478f 100644
--- a/src/Stripe.net/Services/Billing/MeterEventAdjustments/MeterEventAdjustmentCancelOptions.cs
+++ b/src/Stripe.net/Services/Billing/MeterEventAdjustments/MeterEventAdjustmentCancelOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MeterEventAdjustmentCancelOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class MeterEventAdjustmentCancelOptions : INestedOptions
         /// receiving them.
         /// </summary>
         [JsonProperty("identifier")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("identifier")]
+#endif
         public string Identifier { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Billing/MeterEventAdjustments/MeterEventAdjustmentCreateOptions.cs b/src/Stripe.net/Services/Billing/MeterEventAdjustments/MeterEventAdjustmentCreateOptions.cs
index b72677dcf9..a3fd11299e 100644
--- a/src/Stripe.net/Services/Billing/MeterEventAdjustments/MeterEventAdjustmentCreateOptions.cs
+++ b/src/Stripe.net/Services/Billing/MeterEventAdjustments/MeterEventAdjustmentCreateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MeterEventAdjustmentCreateOptions : BaseOptions
     {
@@ -9,12 +12,18 @@ public class MeterEventAdjustmentCreateOptions : BaseOptions
         /// Specifies which event to cancel.
         /// </summary>
         [JsonProperty("cancel")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancel")]
+#endif
         public MeterEventAdjustmentCancelOptions Cancel { get; set; }
 
         /// <summary>
         /// The name of the meter event. Corresponds with the <c>event_name</c> field on a meter.
         /// </summary>
         [JsonProperty("event_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("event_name")]
+#endif
         public string EventName { get; set; }
 
         /// <summary>
@@ -22,6 +31,9 @@ public class MeterEventAdjustmentCreateOptions : BaseOptions
         /// period cancellation is not supported yet.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Billing/MeterEventAdjustments/MeterEventAdjustmentService.cs b/src/Stripe.net/Services/Billing/MeterEventAdjustments/MeterEventAdjustmentService.cs
index 3c6a3b1dda..ab1468ec90 100644
--- a/src/Stripe.net/Services/Billing/MeterEventAdjustments/MeterEventAdjustmentService.cs
+++ b/src/Stripe.net/Services/Billing/MeterEventAdjustments/MeterEventAdjustmentService.cs
@@ -6,7 +6,7 @@ namespace Stripe.Billing
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class MeterEventAdjustmentService : Service<MeterEventAdjustment>,
+    public class MeterEventAdjustmentService : Service,
         ICreatable<MeterEventAdjustment, MeterEventAdjustmentCreateOptions>
     {
         public MeterEventAdjustmentService()
diff --git a/src/Stripe.net/Services/Billing/MeterEventSummaries/MeterEventSummaryListOptions.cs b/src/Stripe.net/Services/Billing/MeterEventSummaries/MeterEventSummaryListOptions.cs
index bc1abd82a4..74033df34d 100644
--- a/src/Stripe.net/Services/Billing/MeterEventSummaries/MeterEventSummaryListOptions.cs
+++ b/src/Stripe.net/Services/Billing/MeterEventSummaries/MeterEventSummaryListOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe.Billing
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MeterEventSummaryListOptions : ListOptions
     {
@@ -11,6 +14,9 @@ public class MeterEventSummaryListOptions : ListOptions
         /// The customer for which to fetch event summaries.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
@@ -19,6 +25,10 @@ public class MeterEventSummaryListOptions : ListOptions
         /// </summary>
         [JsonProperty("end_time")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end_time")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? EndTime { get; set; }
 
         /// <summary>
@@ -27,6 +37,10 @@ public class MeterEventSummaryListOptions : ListOptions
         /// </summary>
         [JsonProperty("start_time")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("start_time")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? StartTime { get; set; }
 
         /// <summary>
@@ -38,6 +52,9 @@ public class MeterEventSummaryListOptions : ListOptions
         /// One of: <c>day</c>, or <c>hour</c>.
         /// </summary>
         [JsonProperty("value_grouping_window")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value_grouping_window")]
+#endif
         public string ValueGroupingWindow { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Billing/MeterEventSummaries/MeterEventSummaryService.cs b/src/Stripe.net/Services/Billing/MeterEventSummaries/MeterEventSummaryService.cs
index f84cbc01a8..70cd486185 100644
--- a/src/Stripe.net/Services/Billing/MeterEventSummaries/MeterEventSummaryService.cs
+++ b/src/Stripe.net/Services/Billing/MeterEventSummaries/MeterEventSummaryService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Billing
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class MeterEventSummaryService : ServiceNested<MeterEventSummary>,
+    public class MeterEventSummaryService : Service,
         INestedListable<MeterEventSummary, MeterEventSummaryListOptions>
     {
         public MeterEventSummaryService()
diff --git a/src/Stripe.net/Services/Billing/MeterEvents/MeterEventCreateOptions.cs b/src/Stripe.net/Services/Billing/MeterEvents/MeterEventCreateOptions.cs
index a1503364b9..458f0505b4 100644
--- a/src/Stripe.net/Services/Billing/MeterEvents/MeterEventCreateOptions.cs
+++ b/src/Stripe.net/Services/Billing/MeterEvents/MeterEventCreateOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe.Billing
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MeterEventCreateOptions : BaseOptions
     {
@@ -12,6 +15,9 @@ public class MeterEventCreateOptions : BaseOptions
         /// The name of the meter event. Corresponds with the <c>event_name</c> field on a meter.
         /// </summary>
         [JsonProperty("event_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("event_name")]
+#endif
         public string EventName { get; set; }
 
         /// <summary>
@@ -22,6 +28,9 @@ public class MeterEventCreateOptions : BaseOptions
         /// helps prevent duplicate entries and ensures data integrity in high-frequency operations.
         /// </summary>
         [JsonProperty("identifier")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("identifier")]
+#endif
         public string Identifier { get; set; }
 
         /// <summary>
@@ -32,6 +41,9 @@ public class MeterEventCreateOptions : BaseOptions
         /// href="https://docs.stripe.com/billing/subscriptions/usage-based/recording-usage#payload-key-overrides">payload</a>.
         /// </summary>
         [JsonProperty("payload")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payload")]
+#endif
         public Dictionary<string, string> Payload { get; set; }
 
         /// <summary>
@@ -41,6 +53,10 @@ public class MeterEventCreateOptions : BaseOptions
         /// </summary>
         [JsonProperty("timestamp")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("timestamp")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? Timestamp { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Billing/MeterEvents/MeterEventService.cs b/src/Stripe.net/Services/Billing/MeterEvents/MeterEventService.cs
index 0e72b36e9c..93df8a30c0 100644
--- a/src/Stripe.net/Services/Billing/MeterEvents/MeterEventService.cs
+++ b/src/Stripe.net/Services/Billing/MeterEvents/MeterEventService.cs
@@ -6,7 +6,7 @@ namespace Stripe.Billing
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class MeterEventService : Service<MeterEvent>,
+    public class MeterEventService : Service,
         ICreatable<MeterEvent, MeterEventCreateOptions>
     {
         public MeterEventService()
diff --git a/src/Stripe.net/Services/Billing/Meters/MeterCreateOptions.cs b/src/Stripe.net/Services/Billing/Meters/MeterCreateOptions.cs
index 5e721013e6..3dfe332d7e 100644
--- a/src/Stripe.net/Services/Billing/Meters/MeterCreateOptions.cs
+++ b/src/Stripe.net/Services/Billing/Meters/MeterCreateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MeterCreateOptions : BaseOptions
     {
@@ -9,18 +12,27 @@ public class MeterCreateOptions : BaseOptions
         /// Fields that specify how to map a meter event to a customer.
         /// </summary>
         [JsonProperty("customer_mapping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_mapping")]
+#endif
         public MeterCustomerMappingOptions CustomerMapping { get; set; }
 
         /// <summary>
         /// The default settings to aggregate a meter's events with.
         /// </summary>
         [JsonProperty("default_aggregation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_aggregation")]
+#endif
         public MeterDefaultAggregationOptions DefaultAggregation { get; set; }
 
         /// <summary>
         /// The meter’s name. Not visible to the customer.
         /// </summary>
         [JsonProperty("display_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_name")]
+#endif
         public string DisplayName { get; set; }
 
         /// <summary>
@@ -28,6 +40,9 @@ public class MeterCreateOptions : BaseOptions
         /// field on meter events.
         /// </summary>
         [JsonProperty("event_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("event_name")]
+#endif
         public string EventName { get; set; }
 
         /// <summary>
@@ -35,12 +50,18 @@ public class MeterCreateOptions : BaseOptions
         /// One of: <c>day</c>, or <c>hour</c>.
         /// </summary>
         [JsonProperty("event_time_window")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("event_time_window")]
+#endif
         public string EventTimeWindow { get; set; }
 
         /// <summary>
         /// Fields that specify how to calculate a meter event's value.
         /// </summary>
         [JsonProperty("value_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value_settings")]
+#endif
         public MeterValueSettingsOptions ValueSettings { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Billing/Meters/MeterCustomerMappingOptions.cs b/src/Stripe.net/Services/Billing/Meters/MeterCustomerMappingOptions.cs
index bd66dae743..d82b44fd9e 100644
--- a/src/Stripe.net/Services/Billing/Meters/MeterCustomerMappingOptions.cs
+++ b/src/Stripe.net/Services/Billing/Meters/MeterCustomerMappingOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MeterCustomerMappingOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class MeterCustomerMappingOptions : INestedOptions
         /// The key in the meter event payload to use for mapping the event to a customer.
         /// </summary>
         [JsonProperty("event_payload_key")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("event_payload_key")]
+#endif
         public string EventPayloadKey { get; set; }
 
         /// <summary>
         /// The method for mapping a meter event to a customer. Must be <c>by_id</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Billing/Meters/MeterDefaultAggregationOptions.cs b/src/Stripe.net/Services/Billing/Meters/MeterDefaultAggregationOptions.cs
index 97a8e81ca9..7c7de951ba 100644
--- a/src/Stripe.net/Services/Billing/Meters/MeterDefaultAggregationOptions.cs
+++ b/src/Stripe.net/Services/Billing/Meters/MeterDefaultAggregationOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MeterDefaultAggregationOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class MeterDefaultAggregationOptions : INestedOptions
         /// One of: <c>count</c>, or <c>sum</c>.
         /// </summary>
         [JsonProperty("formula")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("formula")]
+#endif
         public string Formula { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Billing/Meters/MeterListOptions.cs b/src/Stripe.net/Services/Billing/Meters/MeterListOptions.cs
index 318617da7e..b194934cd9 100644
--- a/src/Stripe.net/Services/Billing/Meters/MeterListOptions.cs
+++ b/src/Stripe.net/Services/Billing/Meters/MeterListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MeterListOptions : ListOptions
     {
@@ -10,6 +13,9 @@ public class MeterListOptions : ListOptions
         /// One of: <c>active</c>, or <c>inactive</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Billing/Meters/MeterService.cs b/src/Stripe.net/Services/Billing/Meters/MeterService.cs
index 2dde43d57d..789b3d234e 100644
--- a/src/Stripe.net/Services/Billing/Meters/MeterService.cs
+++ b/src/Stripe.net/Services/Billing/Meters/MeterService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Billing
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class MeterService : Service<Meter>,
+    public class MeterService : Service,
         ICreatable<Meter, MeterCreateOptions>,
         IListable<Meter, MeterListOptions>,
         IRetrievable<Meter, MeterGetOptions>,
diff --git a/src/Stripe.net/Services/Billing/Meters/MeterUpdateOptions.cs b/src/Stripe.net/Services/Billing/Meters/MeterUpdateOptions.cs
index a8788a5f6d..a7a7872121 100644
--- a/src/Stripe.net/Services/Billing/Meters/MeterUpdateOptions.cs
+++ b/src/Stripe.net/Services/Billing/Meters/MeterUpdateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MeterUpdateOptions : BaseOptions
     {
@@ -9,6 +12,9 @@ public class MeterUpdateOptions : BaseOptions
         /// The meter’s name. Not visible to the customer.
         /// </summary>
         [JsonProperty("display_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_name")]
+#endif
         public string DisplayName { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Billing/Meters/MeterValueSettingsOptions.cs b/src/Stripe.net/Services/Billing/Meters/MeterValueSettingsOptions.cs
index 35935784bd..0de06e1a88 100644
--- a/src/Stripe.net/Services/Billing/Meters/MeterValueSettingsOptions.cs
+++ b/src/Stripe.net/Services/Billing/Meters/MeterValueSettingsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MeterValueSettingsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class MeterValueSettingsOptions : INestedOptions
         /// event_payload_key to "bytes_used".
         /// </summary>
         [JsonProperty("event_payload_key")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("event_payload_key")]
+#endif
         public string EventPayloadKey { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationBusinessProfileOptions.cs b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationBusinessProfileOptions.cs
index 821ddf3cb9..2c6ce155bf 100644
--- a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationBusinessProfileOptions.cs
+++ b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationBusinessProfileOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationBusinessProfileOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class ConfigurationBusinessProfileOptions : INestedOptions
         /// The messaging shown to customers in the portal.
         /// </summary>
         [JsonProperty("headline")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("headline")]
+#endif
         public string Headline { get; set; }
 
         /// <summary>
         /// A link to the business’s publicly available privacy policy.
         /// </summary>
         [JsonProperty("privacy_policy_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("privacy_policy_url")]
+#endif
         public string PrivacyPolicyUrl { get; set; }
 
         /// <summary>
         /// A link to the business’s publicly available terms of service.
         /// </summary>
         [JsonProperty("terms_of_service_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("terms_of_service_url")]
+#endif
         public string TermsOfServiceUrl { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationCreateOptions.cs b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationCreateOptions.cs
index 0a3a4e9abf..fdfaafd2bf 100644
--- a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationCreateOptions.cs
+++ b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.BillingPortal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationCreateOptions : BaseOptions, IHasMetadata
     {
@@ -10,6 +13,9 @@ public class ConfigurationCreateOptions : BaseOptions, IHasMetadata
         /// The business information shown to customers in the portal.
         /// </summary>
         [JsonProperty("business_profile")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("business_profile")]
+#endif
         public ConfigurationBusinessProfileOptions BusinessProfile { get; set; }
 
         /// <summary>
@@ -19,12 +25,18 @@ public class ConfigurationCreateOptions : BaseOptions, IHasMetadata
         /// when creating the session.
         /// </summary>
         [JsonProperty("default_return_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_return_url")]
+#endif
         public string DefaultReturnUrl { get; set; }
 
         /// <summary>
         /// Information about the features available in the portal.
         /// </summary>
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public ConfigurationFeaturesOptions Features { get; set; }
 
         /// <summary>
@@ -34,6 +46,9 @@ public class ConfigurationCreateOptions : BaseOptions, IHasMetadata
         /// docs</a>.
         /// </summary>
         [JsonProperty("login_page")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("login_page")]
+#endif
         public ConfigurationLoginPageOptions LoginPage { get; set; }
 
         /// <summary>
@@ -43,6 +58,9 @@ public class ConfigurationCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesCustomerUpdateOptions.cs b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesCustomerUpdateOptions.cs
index 5d9cbffcb8..82b883607a 100644
--- a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesCustomerUpdateOptions.cs
+++ b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesCustomerUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.BillingPortal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationFeaturesCustomerUpdateOptions : INestedOptions
     {
@@ -13,12 +16,18 @@ public class ConfigurationFeaturesCustomerUpdateOptions : INestedOptions
         /// <c>tax_id</c>.
         /// </summary>
         [JsonProperty("allowed_updates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allowed_updates")]
+#endif
         public List<string> AllowedUpdates { get; set; }
 
         /// <summary>
         /// Whether the feature is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesInvoiceHistoryOptions.cs b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesInvoiceHistoryOptions.cs
index 7c76d5841a..fc23910860 100644
--- a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesInvoiceHistoryOptions.cs
+++ b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesInvoiceHistoryOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationFeaturesInvoiceHistoryOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class ConfigurationFeaturesInvoiceHistoryOptions : INestedOptions
         /// Whether the feature is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesOptions.cs b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesOptions.cs
index 532e12501f..19143fe2ae 100644
--- a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesOptions.cs
+++ b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationFeaturesOptions : INestedOptions
     {
@@ -9,30 +12,45 @@ public class ConfigurationFeaturesOptions : INestedOptions
         /// Information about updating the customer details in the portal.
         /// </summary>
         [JsonProperty("customer_update")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_update")]
+#endif
         public ConfigurationFeaturesCustomerUpdateOptions CustomerUpdate { get; set; }
 
         /// <summary>
         /// Information about showing the billing history in the portal.
         /// </summary>
         [JsonProperty("invoice_history")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_history")]
+#endif
         public ConfigurationFeaturesInvoiceHistoryOptions InvoiceHistory { get; set; }
 
         /// <summary>
         /// Information about updating payment methods in the portal.
         /// </summary>
         [JsonProperty("payment_method_update")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_update")]
+#endif
         public ConfigurationFeaturesPaymentMethodUpdateOptions PaymentMethodUpdate { get; set; }
 
         /// <summary>
         /// Information about canceling subscriptions in the portal.
         /// </summary>
         [JsonProperty("subscription_cancel")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_cancel")]
+#endif
         public ConfigurationFeaturesSubscriptionCancelOptions SubscriptionCancel { get; set; }
 
         /// <summary>
         /// Information about updating subscriptions in the portal.
         /// </summary>
         [JsonProperty("subscription_update")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_update")]
+#endif
         public ConfigurationFeaturesSubscriptionUpdateOptions SubscriptionUpdate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesPaymentMethodUpdateOptions.cs b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesPaymentMethodUpdateOptions.cs
index a62ce7dc5a..3e3b0b0172 100644
--- a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesPaymentMethodUpdateOptions.cs
+++ b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesPaymentMethodUpdateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationFeaturesPaymentMethodUpdateOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class ConfigurationFeaturesPaymentMethodUpdateOptions : INestedOptions
         /// Whether the feature is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionCancelCancellationReasonOptions.cs b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionCancelCancellationReasonOptions.cs
index c005e31e03..3f86244975 100644
--- a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionCancelCancellationReasonOptions.cs
+++ b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionCancelCancellationReasonOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.BillingPortal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationFeaturesSubscriptionCancelCancellationReasonOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class ConfigurationFeaturesSubscriptionCancelCancellationReasonOptions :
         /// Whether the feature is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class ConfigurationFeaturesSubscriptionCancelCancellationReasonOptions :
         /// <c>unused</c>.
         /// </summary>
         [JsonProperty("options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("options")]
+#endif
         public List<string> Options { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionCancelOptions.cs b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionCancelOptions.cs
index c8cb0e4a27..1be46de231 100644
--- a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionCancelOptions.cs
+++ b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionCancelOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationFeaturesSubscriptionCancelOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class ConfigurationFeaturesSubscriptionCancelOptions : INestedOptions
         /// exposed to the customer.
         /// </summary>
         [JsonProperty("cancellation_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancellation_reason")]
+#endif
         public ConfigurationFeaturesSubscriptionCancelCancellationReasonOptions CancellationReason { get; set; }
 
         /// <summary>
         /// Whether the feature is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationFeaturesSubscriptionCancelOptions : INestedOptions
         /// One of: <c>at_period_end</c>, or <c>immediately</c>.
         /// </summary>
         [JsonProperty("mode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mode")]
+#endif
         public string Mode { get; set; }
 
         /// <summary>
@@ -34,6 +46,9 @@ public class ConfigurationFeaturesSubscriptionCancelOptions : INestedOptions
         /// One of: <c>always_invoice</c>, <c>create_prorations</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("proration_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("proration_behavior")]
+#endif
         public string ProrationBehavior { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdateOptions.cs b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdateOptions.cs
index a74438634a..a15500cb8c 100644
--- a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdateOptions.cs
+++ b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.BillingPortal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationFeaturesSubscriptionUpdateOptions : INestedOptions
     {
@@ -12,18 +15,27 @@ public class ConfigurationFeaturesSubscriptionUpdateOptions : INestedOptions
         /// One of: <c>price</c>, <c>promotion_code</c>, or <c>quantity</c>.
         /// </summary>
         [JsonProperty("default_allowed_updates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_allowed_updates")]
+#endif
         public List<string> DefaultAllowedUpdates { get; set; }
 
         /// <summary>
         /// Whether the feature is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
         /// The list of up to 10 products that support subscription updates.
         /// </summary>
         [JsonProperty("products")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("products")]
+#endif
         public List<ConfigurationFeaturesSubscriptionUpdateProductOptions> Products { get; set; }
 
         /// <summary>
@@ -32,6 +44,9 @@ public class ConfigurationFeaturesSubscriptionUpdateOptions : INestedOptions
         /// One of: <c>always_invoice</c>, <c>create_prorations</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("proration_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("proration_behavior")]
+#endif
         public string ProrationBehavior { get; set; }
 
         /// <summary>
@@ -39,6 +54,9 @@ public class ConfigurationFeaturesSubscriptionUpdateOptions : INestedOptions
         /// of applying immediately.
         /// </summary>
         [JsonProperty("schedule_at_period_end")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("schedule_at_period_end")]
+#endif
         public ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEndOptions ScheduleAtPeriodEnd { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdateProductOptions.cs b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdateProductOptions.cs
index f43655453b..32db8197c9 100644
--- a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdateProductOptions.cs
+++ b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdateProductOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.BillingPortal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationFeaturesSubscriptionUpdateProductOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class ConfigurationFeaturesSubscriptionUpdateProductOptions : INestedOpti
         /// The list of price IDs for the product that a subscription can be updated to.
         /// </summary>
         [JsonProperty("prices")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("prices")]
+#endif
         public List<string> Prices { get; set; }
 
         /// <summary>
         /// The product id.
         /// </summary>
         [JsonProperty("product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product")]
+#endif
         public string Product { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEndConditionOptions.cs b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEndConditionOptions.cs
index fe8b0b13a6..53d2800b4e 100644
--- a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEndConditionOptions.cs
+++ b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEndConditionOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEndConditionOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEndCondition
         /// One of: <c>decreasing_item_amount</c>, or <c>shortening_interval</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEndOptions.cs b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEndOptions.cs
index 1e05d554c5..ff88a27a64 100644
--- a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEndOptions.cs
+++ b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEndOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.BillingPortal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEndOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEndOptions :
         /// of the current period.
         /// </summary>
         [JsonProperty("conditions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("conditions")]
+#endif
         public List<ConfigurationFeaturesSubscriptionUpdateScheduleAtPeriodEndConditionOptions> Conditions { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationListOptions.cs b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationListOptions.cs
index 6991062123..9046b19b88 100644
--- a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationListOptions.cs
+++ b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationListOptions : ListOptions
     {
@@ -10,6 +13,9 @@ public class ConfigurationListOptions : ListOptions
         /// list active configurations).
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool? Active { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class ConfigurationListOptions : ListOptions
         /// list the default configuration).
         /// </summary>
         [JsonProperty("is_default")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("is_default")]
+#endif
         public bool? IsDefault { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationLoginPageOptions.cs b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationLoginPageOptions.cs
index 4db3eff9da..a8665a9159 100644
--- a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationLoginPageOptions.cs
+++ b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationLoginPageOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationLoginPageOptions : INestedOptions
     {
@@ -13,6 +16,9 @@ public class ConfigurationLoginPageOptions : INestedOptions
         /// Set to <c>false</c> to deactivate the <c>login_page.url</c>.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationService.cs b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationService.cs
index ed8834123f..7f6cba7134 100644
--- a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationService.cs
+++ b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationService.cs
@@ -8,7 +8,7 @@ namespace Stripe.BillingPortal
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class ConfigurationService : Service<Configuration>,
+    public class ConfigurationService : Service,
         ICreatable<Configuration, ConfigurationCreateOptions>,
         IListable<Configuration, ConfigurationListOptions>,
         IRetrievable<Configuration, ConfigurationGetOptions>,
diff --git a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationUpdateOptions.cs b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationUpdateOptions.cs
index 545039751d..052f396b30 100644
--- a/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationUpdateOptions.cs
+++ b/src/Stripe.net/Services/BillingPortal/Configurations/ConfigurationUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.BillingPortal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -10,12 +13,18 @@ public class ConfigurationUpdateOptions : BaseOptions, IHasMetadata
         /// Whether the configuration is active and can be used to create portal sessions.
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool? Active { get; set; }
 
         /// <summary>
         /// The business information shown to customers in the portal.
         /// </summary>
         [JsonProperty("business_profile")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("business_profile")]
+#endif
         public ConfigurationBusinessProfileOptions BusinessProfile { get; set; }
 
         /// <summary>
@@ -25,12 +34,18 @@ public class ConfigurationUpdateOptions : BaseOptions, IHasMetadata
         /// when creating the session.
         /// </summary>
         [JsonProperty("default_return_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_return_url")]
+#endif
         public string DefaultReturnUrl { get; set; }
 
         /// <summary>
         /// Information about the features available in the portal.
         /// </summary>
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public ConfigurationFeaturesOptions Features { get; set; }
 
         /// <summary>
@@ -40,6 +55,9 @@ public class ConfigurationUpdateOptions : BaseOptions, IHasMetadata
         /// docs</a>.
         /// </summary>
         [JsonProperty("login_page")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("login_page")]
+#endif
         public ConfigurationLoginPageOptions LoginPage { get; set; }
 
         /// <summary>
@@ -49,6 +67,9 @@ public class ConfigurationUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BillingPortal/Sessions/SessionCreateOptions.cs b/src/Stripe.net/Services/BillingPortal/Sessions/SessionCreateOptions.cs
index 37fe74e124..18fe2083ce 100644
--- a/src/Stripe.net/Services/BillingPortal/Sessions/SessionCreateOptions.cs
+++ b/src/Stripe.net/Services/BillingPortal/Sessions/SessionCreateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCreateOptions : BaseOptions
     {
@@ -12,12 +15,18 @@ public class SessionCreateOptions : BaseOptions
         /// session uses the default configuration.
         /// </summary>
         [JsonProperty("configuration")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("configuration")]
+#endif
         public string Configuration { get; set; }
 
         /// <summary>
         /// The ID of an existing customer.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class SessionCreateOptions : BaseOptions
         /// more about using customer portal deep links and flows.
         /// </summary>
         [JsonProperty("flow_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flow_data")]
+#endif
         public SessionFlowDataOptions FlowData { get; set; }
 
         /// <summary>
@@ -40,6 +52,9 @@ public class SessionCreateOptions : BaseOptions
         /// <c>tr</c>, <c>vi</c>, <c>zh</c>, <c>zh-HK</c>, or <c>zh-TW</c>.
         /// </summary>
         [JsonProperty("locale")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("locale")]
+#endif
         public string Locale { get; set; }
 
         /// <summary>
@@ -53,6 +68,9 @@ public class SessionCreateOptions : BaseOptions
         /// displays.
         /// </summary>
         [JsonProperty("on_behalf_of")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+#endif
         public string OnBehalfOf { get; set; }
 
         /// <summary>
@@ -60,6 +78,9 @@ public class SessionCreateOptions : BaseOptions
         /// to your website.
         /// </summary>
         [JsonProperty("return_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_url")]
+#endif
         public string ReturnUrl { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataAfterCompletionHostedConfirmationOptions.cs b/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataAfterCompletionHostedConfirmationOptions.cs
index 3ccd442481..5890b3f5a0 100644
--- a/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataAfterCompletionHostedConfirmationOptions.cs
+++ b/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataAfterCompletionHostedConfirmationOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionFlowDataAfterCompletionHostedConfirmationOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionFlowDataAfterCompletionHostedConfirmationOptions : INestedOp
         /// A custom message to display to the customer after the flow is completed.
         /// </summary>
         [JsonProperty("custom_message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_message")]
+#endif
         public string CustomMessage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataAfterCompletionOptions.cs b/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataAfterCompletionOptions.cs
index a1ee6972c7..5361ef4a57 100644
--- a/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataAfterCompletionOptions.cs
+++ b/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataAfterCompletionOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionFlowDataAfterCompletionOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class SessionFlowDataAfterCompletionOptions : INestedOptions
         /// Configuration when <c>after_completion.type=hosted_confirmation</c>.
         /// </summary>
         [JsonProperty("hosted_confirmation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hosted_confirmation")]
+#endif
         public SessionFlowDataAfterCompletionHostedConfirmationOptions HostedConfirmation { get; set; }
 
         /// <summary>
         /// Configuration when <c>after_completion.type=redirect</c>.
         /// </summary>
         [JsonProperty("redirect")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("redirect")]
+#endif
         public SessionFlowDataAfterCompletionRedirectOptions Redirect { get; set; }
 
         /// <summary>
@@ -22,6 +31,9 @@ public class SessionFlowDataAfterCompletionOptions : INestedOptions
         /// One of: <c>hosted_confirmation</c>, <c>portal_homepage</c>, or <c>redirect</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataAfterCompletionRedirectOptions.cs b/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataAfterCompletionRedirectOptions.cs
index 2ea4cae1ad..ccb3e9e800 100644
--- a/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataAfterCompletionRedirectOptions.cs
+++ b/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataAfterCompletionRedirectOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionFlowDataAfterCompletionRedirectOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionFlowDataAfterCompletionRedirectOptions : INestedOptions
         /// The URL the customer will be redirected to after the flow is completed.
         /// </summary>
         [JsonProperty("return_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_url")]
+#endif
         public string ReturnUrl { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataOptions.cs b/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataOptions.cs
index c40d90b2e2..421feb191b 100644
--- a/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataOptions.cs
+++ b/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionFlowDataOptions : INestedOptions
     {
@@ -9,24 +12,36 @@ public class SessionFlowDataOptions : INestedOptions
         /// Behavior after the flow is completed.
         /// </summary>
         [JsonProperty("after_completion")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("after_completion")]
+#endif
         public SessionFlowDataAfterCompletionOptions AfterCompletion { get; set; }
 
         /// <summary>
         /// Configuration when <c>flow_data.type=subscription_cancel</c>.
         /// </summary>
         [JsonProperty("subscription_cancel")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_cancel")]
+#endif
         public SessionFlowDataSubscriptionCancelOptions SubscriptionCancel { get; set; }
 
         /// <summary>
         /// Configuration when <c>flow_data.type=subscription_update</c>.
         /// </summary>
         [JsonProperty("subscription_update")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_update")]
+#endif
         public SessionFlowDataSubscriptionUpdateOptions SubscriptionUpdate { get; set; }
 
         /// <summary>
         /// Configuration when <c>flow_data.type=subscription_update_confirm</c>.
         /// </summary>
         [JsonProperty("subscription_update_confirm")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_update_confirm")]
+#endif
         public SessionFlowDataSubscriptionUpdateConfirmOptions SubscriptionUpdateConfirm { get; set; }
 
         /// <summary>
@@ -35,6 +50,9 @@ public class SessionFlowDataOptions : INestedOptions
         /// <c>subscription_update</c>, or <c>subscription_update_confirm</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataSubscriptionCancelOptions.cs b/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataSubscriptionCancelOptions.cs
index 6921969b95..cf2de52a5e 100644
--- a/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataSubscriptionCancelOptions.cs
+++ b/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataSubscriptionCancelOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionFlowDataSubscriptionCancelOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class SessionFlowDataSubscriptionCancelOptions : INestedOptions
         /// Specify a retention strategy to be used in the cancellation flow.
         /// </summary>
         [JsonProperty("retention")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("retention")]
+#endif
         public SessionFlowDataSubscriptionCancelRetentionOptions Retention { get; set; }
 
         /// <summary>
         /// The ID of the subscription to be canceled.
         /// </summary>
         [JsonProperty("subscription")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription")]
+#endif
         public string Subscription { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataSubscriptionCancelRetentionCouponOfferOptions.cs b/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataSubscriptionCancelRetentionCouponOfferOptions.cs
index aae7c75e40..cba7c838d4 100644
--- a/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataSubscriptionCancelRetentionCouponOfferOptions.cs
+++ b/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataSubscriptionCancelRetentionCouponOfferOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionFlowDataSubscriptionCancelRetentionCouponOfferOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionFlowDataSubscriptionCancelRetentionCouponOfferOptions : INes
         /// The ID of the coupon to be offered.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataSubscriptionCancelRetentionOptions.cs b/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataSubscriptionCancelRetentionOptions.cs
index 4cb8a5cf7c..9ebd26ba8d 100644
--- a/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataSubscriptionCancelRetentionOptions.cs
+++ b/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataSubscriptionCancelRetentionOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionFlowDataSubscriptionCancelRetentionOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class SessionFlowDataSubscriptionCancelRetentionOptions : INestedOptions
         /// Configuration when <c>retention.type=coupon_offer</c>.
         /// </summary>
         [JsonProperty("coupon_offer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon_offer")]
+#endif
         public SessionFlowDataSubscriptionCancelRetentionCouponOfferOptions CouponOffer { get; set; }
 
         /// <summary>
         /// Type of retention strategy to use with the customer.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataSubscriptionUpdateConfirmDiscountOptions.cs b/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataSubscriptionUpdateConfirmDiscountOptions.cs
index 8eef46c0cc..08f9dd540b 100644
--- a/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataSubscriptionUpdateConfirmDiscountOptions.cs
+++ b/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataSubscriptionUpdateConfirmDiscountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionFlowDataSubscriptionUpdateConfirmDiscountOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class SessionFlowDataSubscriptionUpdateConfirmDiscountOptions : INestedOp
         /// The ID of the coupon to apply to this subscription update.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
         /// The ID of a promotion code to apply to this subscription update.
         /// </summary>
         [JsonProperty("promotion_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotion_code")]
+#endif
         public string PromotionCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataSubscriptionUpdateConfirmItemOptions.cs b/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataSubscriptionUpdateConfirmItemOptions.cs
index dd979ea742..3274e2d588 100644
--- a/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataSubscriptionUpdateConfirmItemOptions.cs
+++ b/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataSubscriptionUpdateConfirmItemOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionFlowDataSubscriptionUpdateConfirmItemOptions : INestedOptions, IHasId
     {
@@ -11,6 +14,9 @@ public class SessionFlowDataSubscriptionUpdateConfirmItemOptions : INestedOption
         /// item</a> to be updated.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class SessionFlowDataSubscriptionUpdateConfirmItemOptions : INestedOption
         /// href="https://stripe.com/docs/api/customer_portal/configuration#portal_configuration_object-features-subscription_update-products"><c>features.subscription_update.products</c></a>.
         /// </summary>
         [JsonProperty("price")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price")]
+#endif
         public string Price { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class SessionFlowDataSubscriptionUpdateConfirmItemOptions : INestedOption
         /// that the customer should subscribe to through this flow.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataSubscriptionUpdateConfirmOptions.cs b/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataSubscriptionUpdateConfirmOptions.cs
index 6d766a7eff..a76f794c49 100644
--- a/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataSubscriptionUpdateConfirmOptions.cs
+++ b/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataSubscriptionUpdateConfirmOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.BillingPortal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionFlowDataSubscriptionUpdateConfirmOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class SessionFlowDataSubscriptionUpdateConfirmOptions : INestedOptions
         /// one may be specified.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<SessionFlowDataSubscriptionUpdateConfirmDiscountOptions> Discounts { get; set; }
 
         /// <summary>
@@ -19,12 +25,18 @@ public class SessionFlowDataSubscriptionUpdateConfirmOptions : INestedOptions
         /// with multiple items are not updatable.
         /// </summary>
         [JsonProperty("items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("items")]
+#endif
         public List<SessionFlowDataSubscriptionUpdateConfirmItemOptions> Items { get; set; }
 
         /// <summary>
         /// The ID of the subscription to be updated.
         /// </summary>
         [JsonProperty("subscription")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription")]
+#endif
         public string Subscription { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataSubscriptionUpdateOptions.cs b/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataSubscriptionUpdateOptions.cs
index 9a1b9439bd..4fece253ce 100644
--- a/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataSubscriptionUpdateOptions.cs
+++ b/src/Stripe.net/Services/BillingPortal/Sessions/SessionFlowDataSubscriptionUpdateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.BillingPortal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionFlowDataSubscriptionUpdateOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionFlowDataSubscriptionUpdateOptions : INestedOptions
         /// The ID of the subscription to be updated.
         /// </summary>
         [JsonProperty("subscription")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription")]
+#endif
         public string Subscription { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/BillingPortal/Sessions/SessionService.cs b/src/Stripe.net/Services/BillingPortal/Sessions/SessionService.cs
index a2007841ac..2c18bfeae3 100644
--- a/src/Stripe.net/Services/BillingPortal/Sessions/SessionService.cs
+++ b/src/Stripe.net/Services/BillingPortal/Sessions/SessionService.cs
@@ -6,7 +6,7 @@ namespace Stripe.BillingPortal
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class SessionService : Service<Session>,
+    public class SessionService : Service,
         ICreatable<Session, SessionCreateOptions>
     {
         public SessionService()
diff --git a/src/Stripe.net/Services/Cards/CardCreateOptions.cs b/src/Stripe.net/Services/Cards/CardCreateOptions.cs
index 79b1b2af6c..dc6ad9e84d 100644
--- a/src/Stripe.net/Services/Cards/CardCreateOptions.cs
+++ b/src/Stripe.net/Services/Cards/CardCreateOptions.cs
@@ -2,21 +2,38 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
+
     using Stripe.Infrastructure;
 
     public class CardCreateOptions : BaseOptions, IHasMetadata
     {
         [JsonProperty("default_for_currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_for_currency")]
+#endif
         public bool? DefaultForCurrency { get; set; }
 
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         [JsonProperty("source")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<string, CardCreateNestedOptions> Source { get; set; }
 
         [JsonProperty("validate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("validate")]
+#endif
         public bool? Validate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Cards/CardDocumentsBankAccountOwnershipVerificationOptions.cs b/src/Stripe.net/Services/Cards/CardDocumentsBankAccountOwnershipVerificationOptions.cs
index a58fb47ed8..4fc48b5c2d 100644
--- a/src/Stripe.net/Services/Cards/CardDocumentsBankAccountOwnershipVerificationOptions.cs
+++ b/src/Stripe.net/Services/Cards/CardDocumentsBankAccountOwnershipVerificationOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardDocumentsBankAccountOwnershipVerificationOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class CardDocumentsBankAccountOwnershipVerificationOptions : INestedOptio
         /// value of <c>account_requirement</c>.
         /// </summary>
         [JsonProperty("files")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("files")]
+#endif
         public List<string> Files { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Cards/CardDocumentsOptions.cs b/src/Stripe.net/Services/Cards/CardDocumentsOptions.cs
index 4142de7c8b..eb78df0bec 100644
--- a/src/Stripe.net/Services/Cards/CardDocumentsOptions.cs
+++ b/src/Stripe.net/Services/Cards/CardDocumentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardDocumentsOptions : INestedOptions
     {
@@ -13,6 +16,9 @@ public class CardDocumentsOptions : INestedOptions
         /// or a check.
         /// </summary>
         [JsonProperty("bank_account_ownership_verification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_account_ownership_verification")]
+#endif
         public CardDocumentsBankAccountOwnershipVerificationOptions BankAccountOwnershipVerification { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Cards/CardListOptions.cs b/src/Stripe.net/Services/Cards/CardListOptions.cs
index 428200b9ef..2c5b2b99ee 100644
--- a/src/Stripe.net/Services/Cards/CardListOptions.cs
+++ b/src/Stripe.net/Services/Cards/CardListOptions.cs
@@ -1,10 +1,20 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using Stripe.Infrastructure;
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class CardListOptions : ListOptions
     {
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         internal string Object => "card";
     }
 }
diff --git a/src/Stripe.net/Services/Cards/CardUpdateOptions.cs b/src/Stripe.net/Services/Cards/CardUpdateOptions.cs
index f1ff562d00..a009aa279c 100644
--- a/src/Stripe.net/Services/Cards/CardUpdateOptions.cs
+++ b/src/Stripe.net/Services/Cards/CardUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -12,60 +15,90 @@ public class CardUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>checking</c>, <c>futsu</c>, <c>savings</c>, or <c>toza</c>.
         /// </summary>
         [JsonProperty("account_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_type")]
+#endif
         public string AccountType { get; set; }
 
         /// <summary>
         /// City/District/Suburb/Town/Village.
         /// </summary>
         [JsonProperty("address_city")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_city")]
+#endif
         public string AddressCity { get; set; }
 
         /// <summary>
         /// Billing address country, if provided when creating card.
         /// </summary>
         [JsonProperty("address_country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_country")]
+#endif
         public string AddressCountry { get; set; }
 
         /// <summary>
         /// Address line 1 (Street address/PO Box/Company name).
         /// </summary>
         [JsonProperty("address_line1")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_line1")]
+#endif
         public string AddressLine1 { get; set; }
 
         /// <summary>
         /// Address line 2 (Apartment/Suite/Unit/Building).
         /// </summary>
         [JsonProperty("address_line2")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_line2")]
+#endif
         public string AddressLine2 { get; set; }
 
         /// <summary>
         /// State/County/Province/Region.
         /// </summary>
         [JsonProperty("address_state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_state")]
+#endif
         public string AddressState { get; set; }
 
         /// <summary>
         /// ZIP or postal code.
         /// </summary>
         [JsonProperty("address_zip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_zip")]
+#endif
         public string AddressZip { get; set; }
 
         /// <summary>
         /// Documents that may be submitted to satisfy various informational requests.
         /// </summary>
         [JsonProperty("documents")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("documents")]
+#endif
         public CardDocumentsOptions Documents { get; set; }
 
         /// <summary>
         /// Two digit number representing the card’s expiration month.
         /// </summary>
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public long? ExpMonth { get; set; }
 
         /// <summary>
         /// Four digit number representing the card’s expiration year.
         /// </summary>
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public long? ExpYear { get; set; }
 
         /// <summary>
@@ -75,15 +108,24 @@ public class CardUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Cardholder name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         [JsonProperty("validate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("validate")]
+#endif
         public bool? Validate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Charges/CardCreateNestedOptions.cs b/src/Stripe.net/Services/Charges/CardCreateNestedOptions.cs
index 756bd4d31e..4626a124ef 100644
--- a/src/Stripe.net/Services/Charges/CardCreateNestedOptions.cs
+++ b/src/Stripe.net/Services/Charges/CardCreateNestedOptions.cs
@@ -3,37 +3,70 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardCreateNestedOptions : INestedOptions, IHasMetadata, IHasObject
     {
         [JsonProperty("address_city")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_city")]
+#endif
         public string AddressCity { get; set; }
 
         [JsonProperty("address_country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_country")]
+#endif
         public string AddressCountry { get; set; }
 
         [JsonProperty("address_line1")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_line1")]
+#endif
         public string AddressLine1 { get; set; }
 
         [JsonProperty("address_line2")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_line2")]
+#endif
         public string AddressLine2 { get; set; }
 
         [JsonProperty("address_state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_state")]
+#endif
         public string AddressState { get; set; }
 
         [JsonProperty("address_zip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_zip")]
+#endif
         public string AddressZip { get; set; }
 
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         [JsonProperty("cvc")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cvc")]
+#endif
         public string Cvc { get; set; }
 
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public long? ExpMonth { get; set; }
 
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public long? ExpYear { get; set; }
 
         /// <summary>
@@ -42,15 +75,27 @@ public class CardCreateNestedOptions : INestedOptions, IHasMetadata, IHasObject
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         [JsonProperty("number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("number")]
+#endif
         public string Number { get; set; }
 
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; } = "card";
     }
 }
diff --git a/src/Stripe.net/Services/Charges/ChargeCaptureOptions.cs b/src/Stripe.net/Services/Charges/ChargeCaptureOptions.cs
index c3d6745163..96adcdb53a 100644
--- a/src/Stripe.net/Services/Charges/ChargeCaptureOptions.cs
+++ b/src/Stripe.net/Services/Charges/ChargeCaptureOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargeCaptureOptions : BaseOptions
     {
@@ -10,12 +13,18 @@ public class ChargeCaptureOptions : BaseOptions
         /// additional amount will be automatically refunded.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
         /// An application fee to add on to this charge.
         /// </summary>
         [JsonProperty("application_fee")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee")]
+#endif
         public long? ApplicationFee { get; set; }
 
         /// <summary>
@@ -23,9 +32,15 @@ public class ChargeCaptureOptions : BaseOptions
         /// the original amount.
         /// </summary>
         [JsonProperty("application_fee_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_amount")]
+#endif
         public long? ApplicationFeeAmount { get; set; }
 
         [JsonProperty("exchange_rate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exchange_rate")]
+#endif
         public decimal? ExchangeRate { get; set; }
 
         /// <summary>
@@ -34,6 +49,9 @@ public class ChargeCaptureOptions : BaseOptions
         /// sent in test mode.
         /// </summary>
         [JsonProperty("receipt_email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("receipt_email")]
+#endif
         public string ReceiptEmail { get; set; }
 
         /// <summary>
@@ -47,6 +65,9 @@ public class ChargeCaptureOptions : BaseOptions
         /// <c>statement_descriptor_suffix</c>, in which case this value is used as the suffix.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
 
         /// <summary>
@@ -57,6 +78,9 @@ public class ChargeCaptureOptions : BaseOptions
         /// the account's statement descriptor.
         /// </summary>
         [JsonProperty("statement_descriptor_suffix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_suffix")]
+#endif
         public string StatementDescriptorSuffix { get; set; }
 
         /// <summary>
@@ -65,6 +89,9 @@ public class ChargeCaptureOptions : BaseOptions
         /// the Connect documentation</a> for details.
         /// </summary>
         [JsonProperty("transfer_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_data")]
+#endif
         public ChargeTransferDataOptions TransferData { get; set; }
 
         /// <summary>
@@ -74,6 +101,9 @@ public class ChargeCaptureOptions : BaseOptions
         /// documentation</a> for details.
         /// </summary>
         [JsonProperty("transfer_group")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_group")]
+#endif
         public string TransferGroup { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Charges/ChargeCreateOptions.cs b/src/Stripe.net/Services/Charges/ChargeCreateOptions.cs
index 90ceb68f6a..9811574aa8 100644
--- a/src/Stripe.net/Services/Charges/ChargeCreateOptions.cs
+++ b/src/Stripe.net/Services/Charges/ChargeCreateOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargeCreateOptions : BaseOptions, IHasMetadata
     {
@@ -17,6 +20,9 @@ public class ChargeCreateOptions : BaseOptions, IHasMetadata
         /// 99999999 for a USD charge of $999,999.99).
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -27,6 +33,9 @@ public class ChargeCreateOptions : BaseOptions, IHasMetadata
         /// href="https://stripe.com/docs/connect/direct-charges#collect-fees">documentation</a>.
         /// </summary>
         [JsonProperty("application_fee_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_amount")]
+#endif
         public long? ApplicationFeeAmount { get; set; }
 
         /// <summary>
@@ -38,6 +47,9 @@ public class ChargeCreateOptions : BaseOptions, IHasMetadata
         /// later</a> documentation.
         /// </summary>
         [JsonProperty("capture")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture")]
+#endif
         public bool? Capture { get; set; }
 
         /// <summary>
@@ -46,12 +58,18 @@ public class ChargeCreateOptions : BaseOptions, IHasMetadata
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// The ID of an existing customer that will be charged in this request.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
@@ -61,15 +79,27 @@ public class ChargeCreateOptions : BaseOptions, IHasMetadata
         /// <c>description</c> of the charge(s) that they are describing.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         [JsonProperty("destination")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination")]
+#endif
         public ChargeDestinationOptions Destination { get; set; }
 
         [JsonProperty("exchange_rate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exchange_rate")]
+#endif
         public decimal? ExchangeRate { get; set; }
 
         [JsonProperty("level3")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("level3")]
+#endif
         public ChargeLevel3Options Level3 { get; set; }
 
         /// <summary>
@@ -79,6 +109,9 @@ public class ChargeCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -88,6 +121,9 @@ public class ChargeCreateOptions : BaseOptions, IHasMetadata
         /// Separate Charges and Transfers</a>.
         /// </summary>
         [JsonProperty("on_behalf_of")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+#endif
         public string OnBehalfOf { get; set; }
 
         /// <summary>
@@ -96,6 +132,9 @@ public class ChargeCreateOptions : BaseOptions, IHasMetadata
         /// information.
         /// </summary>
         [JsonProperty("radar_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("radar_options")]
+#endif
         public ChargeRadarOptionsOptions RadarOptions { get; set; }
 
         /// <summary>
@@ -109,12 +148,18 @@ public class ChargeCreateOptions : BaseOptions, IHasMetadata
         /// href="https://dashboard.stripe.com/account/emails">email settings</a>.
         /// </summary>
         [JsonProperty("receipt_email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("receipt_email")]
+#endif
         public string ReceiptEmail { get; set; }
 
         /// <summary>
         /// Shipping information for the charge. Helps prevent fraud on charges for physical goods.
         /// </summary>
         [JsonProperty("shipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping")]
+#endif
         public ChargeShippingOptions Shipping { get; set; }
 
         /// <summary>
@@ -132,6 +177,10 @@ public class ChargeCreateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("source")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<string, CardCreateNestedOptions> Source { get; set; }
 
         /// <summary>
@@ -145,6 +194,9 @@ public class ChargeCreateOptions : BaseOptions, IHasMetadata
         /// <c>statement_descriptor_suffix</c>, in which case this value is used as the suffix.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
 
         /// <summary>
@@ -155,6 +207,9 @@ public class ChargeCreateOptions : BaseOptions, IHasMetadata
         /// the account's statement descriptor.
         /// </summary>
         [JsonProperty("statement_descriptor_suffix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_suffix")]
+#endif
         public string StatementDescriptorSuffix { get; set; }
 
         /// <summary>
@@ -163,6 +218,9 @@ public class ChargeCreateOptions : BaseOptions, IHasMetadata
         /// the Connect documentation</a> for details.
         /// </summary>
         [JsonProperty("transfer_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_data")]
+#endif
         public ChargeTransferDataOptions TransferData { get; set; }
 
         /// <summary>
@@ -171,6 +229,9 @@ public class ChargeCreateOptions : BaseOptions, IHasMetadata
         /// transactions</a>.
         /// </summary>
         [JsonProperty("transfer_group")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_group")]
+#endif
         public string TransferGroup { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Charges/ChargeDestinationOptions.cs b/src/Stripe.net/Services/Charges/ChargeDestinationOptions.cs
index 4700d1f4f4..ad3b39891c 100644
--- a/src/Stripe.net/Services/Charges/ChargeDestinationOptions.cs
+++ b/src/Stripe.net/Services/Charges/ChargeDestinationOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargeDestinationOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class ChargeDestinationOptions : INestedOptions
         /// ID of an existing, connected Stripe account.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public string Account { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class ChargeDestinationOptions : INestedOptions
         /// less than or equal to the charge amount.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Charges/ChargeFraudDetailsOptions.cs b/src/Stripe.net/Services/Charges/ChargeFraudDetailsOptions.cs
index 4ea564ff6c..4802d37301 100644
--- a/src/Stripe.net/Services/Charges/ChargeFraudDetailsOptions.cs
+++ b/src/Stripe.net/Services/Charges/ChargeFraudDetailsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargeFraudDetailsOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class ChargeFraudDetailsOptions : INestedOptions
         /// One of: <c>fraudulent</c>, or <c>safe</c>.
         /// </summary>
         [JsonProperty("user_report")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_report")]
+#endif
         public string UserReport { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Charges/ChargeLevel3LineItemOptions.cs b/src/Stripe.net/Services/Charges/ChargeLevel3LineItemOptions.cs
index e3422944a0..7525abf87e 100644
--- a/src/Stripe.net/Services/Charges/ChargeLevel3LineItemOptions.cs
+++ b/src/Stripe.net/Services/Charges/ChargeLevel3LineItemOptions.cs
@@ -2,25 +2,46 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargeLevel3LineItemOptions : INestedOptions
     {
         [JsonProperty("discount_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount_amount")]
+#endif
         public long? DiscountAmount { get; set; }
 
         [JsonProperty("product_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_code")]
+#endif
         public string ProductCode { get; set; }
 
         [JsonProperty("product_description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_description")]
+#endif
         public string ProductDescription { get; set; }
 
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         [JsonProperty("tax_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_amount")]
+#endif
         public long? TaxAmount { get; set; }
 
         [JsonProperty("unit_cost")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_cost")]
+#endif
         public long? UnitCost { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Charges/ChargeLevel3Options.cs b/src/Stripe.net/Services/Charges/ChargeLevel3Options.cs
index f16ec38994..2bfc433b50 100644
--- a/src/Stripe.net/Services/Charges/ChargeLevel3Options.cs
+++ b/src/Stripe.net/Services/Charges/ChargeLevel3Options.cs
@@ -3,25 +3,46 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargeLevel3Options : INestedOptions
     {
         [JsonProperty("customer_reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_reference")]
+#endif
         public string CustomerReference { get; set; }
 
         [JsonProperty("line_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line_items")]
+#endif
         public List<ChargeLevel3LineItemOptions> LineItems { get; set; }
 
         [JsonProperty("merchant_reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("merchant_reference")]
+#endif
         public string MerchantReference { get; set; }
 
         [JsonProperty("shipping_address_zip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_address_zip")]
+#endif
         public string ShippingAddressZip { get; set; }
 
         [JsonProperty("shipping_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_amount")]
+#endif
         public long? ShippingAmount { get; set; }
 
         [JsonProperty("shipping_from_zip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_from_zip")]
+#endif
         public string ShippingFromZip { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Charges/ChargeListOptions.cs b/src/Stripe.net/Services/Charges/ChargeListOptions.cs
index b29c866700..ddf807d2fd 100644
--- a/src/Stripe.net/Services/Charges/ChargeListOptions.cs
+++ b/src/Stripe.net/Services/Charges/ChargeListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargeListOptions : ListOptionsWithCreated
     {
@@ -9,6 +12,9 @@ public class ChargeListOptions : ListOptionsWithCreated
         /// Only return charges for the customer specified by this customer ID.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
@@ -16,12 +22,18 @@ public class ChargeListOptions : ListOptionsWithCreated
         /// PaymentIntent ID.
         /// </summary>
         [JsonProperty("payment_intent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_intent")]
+#endif
         public string PaymentIntent { get; set; }
 
         /// <summary>
         /// Only return charges for this transfer group, limited to 100.
         /// </summary>
         [JsonProperty("transfer_group")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_group")]
+#endif
         public string TransferGroup { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Charges/ChargeRadarOptionsOptions.cs b/src/Stripe.net/Services/Charges/ChargeRadarOptionsOptions.cs
index b2a41d3c42..e59c86dc95 100644
--- a/src/Stripe.net/Services/Charges/ChargeRadarOptionsOptions.cs
+++ b/src/Stripe.net/Services/Charges/ChargeRadarOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargeRadarOptionsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class ChargeRadarOptionsOptions : INestedOptions
         /// predictions on your payments.
         /// </summary>
         [JsonProperty("session")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("session")]
+#endif
         public string Session { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Charges/ChargeService.cs b/src/Stripe.net/Services/Charges/ChargeService.cs
index de6af2de9d..601030cc37 100644
--- a/src/Stripe.net/Services/Charges/ChargeService.cs
+++ b/src/Stripe.net/Services/Charges/ChargeService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class ChargeService : Service<Charge>,
+    public class ChargeService : Service,
         ICreatable<Charge, ChargeCreateOptions>,
         IListable<Charge, ChargeListOptions>,
         IRetrievable<Charge, ChargeGetOptions>,
diff --git a/src/Stripe.net/Services/Charges/ChargeShippingOptions.cs b/src/Stripe.net/Services/Charges/ChargeShippingOptions.cs
index 2f6cf827f7..3162a55149 100644
--- a/src/Stripe.net/Services/Charges/ChargeShippingOptions.cs
+++ b/src/Stripe.net/Services/Charges/ChargeShippingOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargeShippingOptions : INestedOptions
     {
@@ -9,24 +12,36 @@ public class ChargeShippingOptions : INestedOptions
         /// Shipping address.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public AddressOptions Address { get; set; }
 
         /// <summary>
         /// The delivery service that shipped a physical product, such as Fedex, UPS, USPS, etc.
         /// </summary>
         [JsonProperty("carrier")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("carrier")]
+#endif
         public string Carrier { get; set; }
 
         /// <summary>
         /// Recipient name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// Recipient phone (including extension).
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
 
         /// <summary>
@@ -35,6 +50,9 @@ public class ChargeShippingOptions : INestedOptions
         /// commas.
         /// </summary>
         [JsonProperty("tracking_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tracking_number")]
+#endif
         public string TrackingNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Charges/ChargeSourceListOptions.cs b/src/Stripe.net/Services/Charges/ChargeSourceListOptions.cs
index ab7f0d0f13..aaa43eb6fb 100644
--- a/src/Stripe.net/Services/Charges/ChargeSourceListOptions.cs
+++ b/src/Stripe.net/Services/Charges/ChargeSourceListOptions.cs
@@ -1,10 +1,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargeSourceListOptions : INestedOptions, IHasObject
     {
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Charges/ChargeTransferDataOptions.cs b/src/Stripe.net/Services/Charges/ChargeTransferDataOptions.cs
index ad9d3510fa..a8d87665cf 100644
--- a/src/Stripe.net/Services/Charges/ChargeTransferDataOptions.cs
+++ b/src/Stripe.net/Services/Charges/ChargeTransferDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargeTransferDataOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class ChargeTransferDataOptions : INestedOptions
         /// charge amount is transferred to the destination account.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
         /// ID of an existing, connected Stripe account.
         /// </summary>
         [JsonProperty("destination")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination")]
+#endif
         public string Destination { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Charges/ChargeUpdateOptions.cs b/src/Stripe.net/Services/Charges/ChargeUpdateOptions.cs
index efa9ecfadd..09c9024f68 100644
--- a/src/Stripe.net/Services/Charges/ChargeUpdateOptions.cs
+++ b/src/Stripe.net/Services/Charges/ChargeUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ChargeUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -11,6 +14,9 @@ public class ChargeUpdateOptions : BaseOptions, IHasMetadata
         /// only be updated if there is no existing associated customer with this charge.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
@@ -20,9 +26,15 @@ public class ChargeUpdateOptions : BaseOptions, IHasMetadata
         /// the charge(s) that they are describing.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         [JsonProperty("exchange_rate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exchange_rate")]
+#endif
         public decimal? ExchangeRate { get; set; }
 
         /// <summary>
@@ -33,6 +45,9 @@ public class ChargeUpdateOptions : BaseOptions, IHasMetadata
         /// send to improve our fraud detection algorithms.
         /// </summary>
         [JsonProperty("fraud_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fraud_details")]
+#endif
         public ChargeFraudDetailsOptions FraudDetails { get; set; }
 
         /// <summary>
@@ -42,6 +57,9 @@ public class ChargeUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -49,12 +67,18 @@ public class ChargeUpdateOptions : BaseOptions, IHasMetadata
         /// field is updated, then a new email receipt will be sent to the updated address.
         /// </summary>
         [JsonProperty("receipt_email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("receipt_email")]
+#endif
         public string ReceiptEmail { get; set; }
 
         /// <summary>
         /// Shipping information for the charge. Helps prevent fraud on charges for physical goods.
         /// </summary>
         [JsonProperty("shipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping")]
+#endif
         public ChargeShippingOptions Shipping { get; set; }
 
         /// <summary>
@@ -64,6 +88,9 @@ public class ChargeUpdateOptions : BaseOptions, IHasMetadata
         /// documentation</a> for details.
         /// </summary>
         [JsonProperty("transfer_group")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_group")]
+#endif
         public string TransferGroup { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/SessionLineItems/SessionLineItemService.cs b/src/Stripe.net/Services/Checkout/SessionLineItems/SessionLineItemService.cs
index 778b68f37a..d81e03c029 100644
--- a/src/Stripe.net/Services/Checkout/SessionLineItems/SessionLineItemService.cs
+++ b/src/Stripe.net/Services/Checkout/SessionLineItems/SessionLineItemService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Checkout
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class SessionLineItemService : ServiceNested<LineItem>,
+    public class SessionLineItemService : Service,
         INestedListable<LineItem, SessionLineItemListOptions>
     {
         public SessionLineItemService()
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionAdaptivePricingOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionAdaptivePricingOptions.cs
index b0ac89f0ac..bc5c78999b 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionAdaptivePricingOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionAdaptivePricingOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionAdaptivePricingOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class SessionAdaptivePricingOptions : INestedOptions
         /// href="https://dashboard.stripe.com/settings/adaptive-pricing">dashboard setting</a>.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionAfterExpirationOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionAfterExpirationOptions.cs
index 653944c60d..64373c4441 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionAfterExpirationOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionAfterExpirationOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionAfterExpirationOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionAfterExpirationOptions : INestedOptions
         /// Configure a Checkout Session that can be used to recover an expired session.
         /// </summary>
         [JsonProperty("recovery")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("recovery")]
+#endif
         public SessionAfterExpirationRecoveryOptions Recovery { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionAfterExpirationRecoveryOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionAfterExpirationRecoveryOptions.cs
index 6017c60927..de58997a13 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionAfterExpirationRecoveryOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionAfterExpirationRecoveryOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionAfterExpirationRecoveryOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SessionAfterExpirationRecoveryOptions : INestedOptions
         /// <c>false</c>.
         /// </summary>
         [JsonProperty("allow_promotion_codes")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allow_promotion_codes")]
+#endif
         public bool? AllowPromotionCodes { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class SessionAfterExpirationRecoveryOptions : INestedOptions
         /// Checkout Session object upon expiration.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionAutomaticTaxLiabilityOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionAutomaticTaxLiabilityOptions.cs
index ff0ef9edd1..fd5376f8c0 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionAutomaticTaxLiabilityOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionAutomaticTaxLiabilityOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionAutomaticTaxLiabilityOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionAutomaticTaxLiabilityOptions : INestedOptions
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public string Account { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class SessionAutomaticTaxLiabilityOptions : INestedOptions
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionAutomaticTaxOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionAutomaticTaxOptions.cs
index a69fafc391..ca85a52213 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionAutomaticTaxOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionAutomaticTaxOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionAutomaticTaxOptions : INestedOptions
     {
@@ -13,6 +16,9 @@ public class SessionAutomaticTaxOptions : INestedOptions
         /// necessary for tax calculation.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class SessionAutomaticTaxOptions : INestedOptions
         /// transaction is returned in the report of the connected account.
         /// </summary>
         [JsonProperty("liability")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("liability")]
+#endif
         public SessionAutomaticTaxLiabilityOptions Liability { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionCollectedInformationOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionCollectedInformationOptions.cs
index bd737ef891..f3617e3ac1 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionCollectedInformationOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionCollectedInformationOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCollectedInformationOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionCollectedInformationOptions : INestedOptions
         /// The shipping details to apply to this Session.
         /// </summary>
         [JsonProperty("shipping_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_details")]
+#endif
         public SessionCollectedInformationShippingDetailsOptions ShippingDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionCollectedInformationShippingDetailsOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionCollectedInformationShippingDetailsOptions.cs
index b75897a910..ff47e40634 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionCollectedInformationShippingDetailsOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionCollectedInformationShippingDetailsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCollectedInformationShippingDetailsOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class SessionCollectedInformationShippingDetailsOptions : INestedOptions
         /// The address of the customer.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public AddressOptions Address { get; set; }
 
         /// <summary>
         /// The name of customer.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionConsentCollectionOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionConsentCollectionOptions.cs
index 9fa5752693..a4cf45832a 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionConsentCollectionOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionConsentCollectionOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionConsentCollectionOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SessionConsentCollectionOptions : INestedOptions
         /// <c>hidden</c>, it will hide legal text related to the reuse of a payment method.
         /// </summary>
         [JsonProperty("payment_method_reuse_agreement")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_reuse_agreement")]
+#endif
         public SessionConsentCollectionPaymentMethodReuseAgreementOptions PaymentMethodReuseAgreement { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class SessionConsentCollectionOptions : INestedOptions
         /// One of: <c>auto</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("promotions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotions")]
+#endif
         public string Promotions { get; set; }
 
         /// <summary>
@@ -29,6 +38,9 @@ public class SessionConsentCollectionOptions : INestedOptions
         /// One of: <c>none</c>, or <c>required</c>.
         /// </summary>
         [JsonProperty("terms_of_service")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("terms_of_service")]
+#endif
         public string TermsOfService { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionConsentCollectionPaymentMethodReuseAgreementOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionConsentCollectionPaymentMethodReuseAgreementOptions.cs
index 6909c597f5..c9e9589a05 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionConsentCollectionPaymentMethodReuseAgreementOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionConsentCollectionPaymentMethodReuseAgreementOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionConsentCollectionPaymentMethodReuseAgreementOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class SessionConsentCollectionPaymentMethodReuseAgreementOptions : INeste
         /// One of: <c>auto</c>, or <c>hidden</c>.
         /// </summary>
         [JsonProperty("position")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("position")]
+#endif
         public string Position { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionCreateOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionCreateOptions.cs
index 540dc6695a..f504aedf2d 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionCreateOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionCreateOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe.Checkout
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCreateOptions : BaseOptions, IHasMetadata
     {
@@ -13,18 +16,27 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// href="https://docs.stripe.com/payments/checkout/adaptive-pricing">Adaptive Pricing</a>.
         /// </summary>
         [JsonProperty("adaptive_pricing")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("adaptive_pricing")]
+#endif
         public SessionAdaptivePricingOptions AdaptivePricing { get; set; }
 
         /// <summary>
         /// Configure actions after a Checkout Session has expired.
         /// </summary>
         [JsonProperty("after_expiration")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("after_expiration")]
+#endif
         public SessionAfterExpirationOptions AfterExpiration { get; set; }
 
         /// <summary>
         /// Enables user redeemable promotion codes.
         /// </summary>
         [JsonProperty("allow_promotion_codes")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allow_promotion_codes")]
+#endif
         public bool? AllowPromotionCodes { get; set; }
 
         /// <summary>
@@ -32,6 +44,9 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// subscriptions.
         /// </summary>
         [JsonProperty("automatic_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatic_tax")]
+#endif
         public SessionAutomaticTaxOptions AutomaticTax { get; set; }
 
         /// <summary>
@@ -40,6 +55,9 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>auto</c>, or <c>required</c>.
         /// </summary>
         [JsonProperty("billing_address_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_address_collection")]
+#endif
         public string BillingAddressCollection { get; set; }
 
         /// <summary>
@@ -48,6 +66,9 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// if ui_mode is <c>embedded</c>.
         /// </summary>
         [JsonProperty("cancel_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancel_url")]
+#endif
         public string CancelUrl { get; set; }
 
         /// <summary>
@@ -55,12 +76,18 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// or similar, and can be used to reconcile the session with your internal systems.
         /// </summary>
         [JsonProperty("client_reference_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("client_reference_id")]
+#endif
         public string ClientReferenceId { get; set; }
 
         /// <summary>
         /// Configure fields for the Checkout Session to gather active consent from customers.
         /// </summary>
         [JsonProperty("consent_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("consent_collection")]
+#endif
         public SessionConsentCollectionOptions ConsentCollection { get; set; }
 
         /// <summary>
@@ -69,6 +96,9 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// currency</a>. Required in <c>setup</c> mode when <c>payment_method_types</c> is not set.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -76,12 +106,18 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// are supported.
         /// </summary>
         [JsonProperty("custom_fields")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_fields")]
+#endif
         public List<SessionCustomFieldOptions> CustomFields { get; set; }
 
         /// <summary>
         /// Display additional text for your customers using custom text.
         /// </summary>
         [JsonProperty("custom_text")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_text")]
+#endif
         public SessionCustomTextOptions CustomText { get; set; }
 
         /// <summary>
@@ -110,6 +146,9 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// future reuse.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
@@ -129,6 +168,9 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>always</c>, or <c>if_required</c>.
         /// </summary>
         [JsonProperty("customer_creation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_creation")]
+#endif
         public string CustomerCreation { get; set; }
 
         /// <summary>
@@ -138,6 +180,9 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// the customer once a session is complete, use the <c>customer</c> field.
         /// </summary>
         [JsonProperty("customer_email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_email")]
+#endif
         public string CustomerEmail { get; set; }
 
         /// <summary>
@@ -145,6 +190,9 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// provided when <c>customer</c> is provided.
         /// </summary>
         [JsonProperty("customer_update")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_update")]
+#endif
         public SessionCustomerUpdateOptions CustomerUpdate { get; set; }
 
         /// <summary>
@@ -152,6 +200,9 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// specified.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<SessionDiscountOptions> Discounts { get; set; }
 
         /// <summary>
@@ -161,12 +212,19 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpiresAt { get; set; }
 
         /// <summary>
         /// Generate a post-purchase Invoice for one-time payments.
         /// </summary>
         [JsonProperty("invoice_creation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_creation")]
+#endif
         public SessionInvoiceCreationOptions InvoiceCreation { get; set; }
 
         /// <summary>
@@ -181,6 +239,9 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// initial invoice only.
         /// </summary>
         [JsonProperty("line_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line_items")]
+#endif
         public List<SessionLineItemOptions> LineItems { get; set; }
 
         /// <summary>
@@ -194,6 +255,9 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// <c>tr</c>, <c>vi</c>, <c>zh</c>, <c>zh-HK</c>, or <c>zh-TW</c>.
         /// </summary>
         [JsonProperty("locale")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("locale")]
+#endif
         public string Locale { get; set; }
 
         /// <summary>
@@ -203,6 +267,9 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -211,6 +278,9 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>payment</c>, <c>setup</c>, or <c>subscription</c>.
         /// </summary>
         [JsonProperty("mode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mode")]
+#endif
         public string Mode { get; set; }
 
         /// <summary>
@@ -218,6 +288,9 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// <c>payment</c> mode.
         /// </summary>
         [JsonProperty("payment_intent_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_intent_data")]
+#endif
         public SessionPaymentIntentDataOptions PaymentIntentData { get; set; }
 
         /// <summary>
@@ -235,12 +308,18 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>always</c>, or <c>if_required</c>.
         /// </summary>
         [JsonProperty("payment_method_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_collection")]
+#endif
         public string PaymentMethodCollection { get; set; }
 
         /// <summary>
         /// The ID of the payment method configuration to use with this Checkout session.
         /// </summary>
         [JsonProperty("payment_method_configuration")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_configuration")]
+#endif
         public string PaymentMethodConfiguration { get; set; }
 
         /// <summary>
@@ -248,12 +327,18 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// Checkout session.
         /// </summary>
         [JsonProperty("payment_method_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_data")]
+#endif
         public SessionPaymentMethodDataOptions PaymentMethodData { get; set; }
 
         /// <summary>
         /// Payment-method-specific configuration.
         /// </summary>
         [JsonProperty("payment_method_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_options")]
+#endif
         public SessionPaymentMethodOptionsOptions PaymentMethodOptions { get; set; }
 
         /// <summary>
@@ -285,6 +370,9 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// <c>zip</c>.
         /// </summary>
         [JsonProperty("payment_method_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_types")]
+#endif
         public List<string> PaymentMethodTypes { get; set; }
 
         /// <summary>
@@ -296,6 +384,9 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// with Checkout</a>.
         /// </summary>
         [JsonProperty("phone_number_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone_number_collection")]
+#endif
         public SessionPhoneNumberCollectionOptions PhoneNumberCollection { get; set; }
 
         /// <summary>
@@ -305,6 +396,9 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>always</c>, <c>if_required</c>, or <c>never</c>.
         /// </summary>
         [JsonProperty("redirect_on_completion")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("redirect_on_completion")]
+#endif
         public string RedirectOnCompletion { get; set; }
 
         /// <summary>
@@ -313,6 +407,9 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// <c>embedded</c> and redirect-based payment methods are enabled on the session.
         /// </summary>
         [JsonProperty("return_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_url")]
+#endif
         public string ReturnUrl { get; set; }
 
         /// <summary>
@@ -320,6 +417,9 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// and <c>subscription</c> mode.
         /// </summary>
         [JsonProperty("saved_payment_method_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("saved_payment_method_options")]
+#endif
         public SessionSavedPaymentMethodOptionsOptions SavedPaymentMethodOptions { get; set; }
 
         /// <summary>
@@ -327,6 +427,9 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// <c>setup</c> mode.
         /// </summary>
         [JsonProperty("setup_intent_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_intent_data")]
+#endif
         public SessionSetupIntentDataOptions SetupIntentData { get; set; }
 
         /// <summary>
@@ -334,12 +437,18 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// customer.
         /// </summary>
         [JsonProperty("shipping_address_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_address_collection")]
+#endif
         public SessionShippingAddressCollectionOptions ShippingAddressCollection { get; set; }
 
         /// <summary>
         /// The shipping rate options to apply to this Session. Up to a maximum of 5.
         /// </summary>
         [JsonProperty("shipping_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_options")]
+#endif
         public List<SessionShippingOptionOptions> ShippingOptions { get; set; }
 
         /// <summary>
@@ -350,6 +459,9 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>auto</c>, <c>book</c>, <c>donate</c>, <c>pay</c>, or <c>subscribe</c>.
         /// </summary>
         [JsonProperty("submit_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("submit_type")]
+#endif
         public string SubmitType { get; set; }
 
         /// <summary>
@@ -357,6 +469,9 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// <c>subscription</c> mode.
         /// </summary>
         [JsonProperty("subscription_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_data")]
+#endif
         public SessionSubscriptionDataOptions SubscriptionData { get; set; }
 
         /// <summary>
@@ -367,12 +482,18 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// success page</a>.
         /// </summary>
         [JsonProperty("success_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("success_url")]
+#endif
         public string SuccessUrl { get; set; }
 
         /// <summary>
         /// Controls tax ID collection during checkout.
         /// </summary>
         [JsonProperty("tax_id_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_id_collection")]
+#endif
         public SessionTaxIdCollectionOptions TaxIdCollection { get; set; }
 
         /// <summary>
@@ -380,6 +501,9 @@ public class SessionCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>embedded</c>, or <c>hosted</c>.
         /// </summary>
         [JsonProperty("ui_mode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ui_mode")]
+#endif
         public string UiMode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionCustomFieldDropdownOptionOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionCustomFieldDropdownOptionOptions.cs
index f0348e405f..4fc9f4f9b0 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionCustomFieldDropdownOptionOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionCustomFieldDropdownOptionOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCustomFieldDropdownOptionOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionCustomFieldDropdownOptionOptions : INestedOptions
         /// The label for the option, displayed to the customer. Up to 100 characters.
         /// </summary>
         [JsonProperty("label")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("label")]
+#endif
         public string Label { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class SessionCustomFieldDropdownOptionOptions : INestedOptions
         /// alphanumeric, and up to 100 characters.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionCustomFieldDropdownOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionCustomFieldDropdownOptions.cs
index 5b3b8b0b46..c3cc7e8282 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionCustomFieldDropdownOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionCustomFieldDropdownOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Checkout
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCustomFieldDropdownOptions : INestedOptions
     {
@@ -11,12 +14,18 @@ public class SessionCustomFieldDropdownOptions : INestedOptions
         /// the <c>options</c> array.
         /// </summary>
         [JsonProperty("default_value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_value")]
+#endif
         public string DefaultValue { get; set; }
 
         /// <summary>
         /// The options available for the customer to select. Up to 200 options allowed.
         /// </summary>
         [JsonProperty("options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("options")]
+#endif
         public List<SessionCustomFieldDropdownOptionOptions> Options { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionCustomFieldLabelOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionCustomFieldLabelOptions.cs
index d60608e7c0..f99f388ad7 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionCustomFieldLabelOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionCustomFieldLabelOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCustomFieldLabelOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class SessionCustomFieldLabelOptions : INestedOptions
         /// Custom text for the label, displayed to the customer. Up to 50 characters.
         /// </summary>
         [JsonProperty("custom")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom")]
+#endif
         public string Custom { get; set; }
 
         /// <summary>
         /// The type of the label.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionCustomFieldNumericOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionCustomFieldNumericOptions.cs
index 51b8b01595..339f5982b2 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionCustomFieldNumericOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionCustomFieldNumericOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCustomFieldNumericOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class SessionCustomFieldNumericOptions : INestedOptions
         /// The value that will pre-fill the field on the payment page.
         /// </summary>
         [JsonProperty("default_value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_value")]
+#endif
         public string DefaultValue { get; set; }
 
         /// <summary>
         /// The maximum character length constraint for the customer's input.
         /// </summary>
         [JsonProperty("maximum_length")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("maximum_length")]
+#endif
         public long? MaximumLength { get; set; }
 
         /// <summary>
         /// The minimum character length requirement for the customer's input.
         /// </summary>
         [JsonProperty("minimum_length")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("minimum_length")]
+#endif
         public long? MinimumLength { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionCustomFieldOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionCustomFieldOptions.cs
index 32c0be7420..4cfb722e06 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionCustomFieldOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionCustomFieldOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCustomFieldOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionCustomFieldOptions : INestedOptions
         /// Configuration for <c>type=dropdown</c> fields.
         /// </summary>
         [JsonProperty("dropdown")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dropdown")]
+#endif
         public SessionCustomFieldDropdownOptions Dropdown { get; set; }
 
         /// <summary>
@@ -16,18 +22,27 @@ public class SessionCustomFieldOptions : INestedOptions
         /// unique to this field, alphanumeric, and up to 200 characters.
         /// </summary>
         [JsonProperty("key")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("key")]
+#endif
         public string Key { get; set; }
 
         /// <summary>
         /// The label for the field, displayed to the customer.
         /// </summary>
         [JsonProperty("label")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("label")]
+#endif
         public SessionCustomFieldLabelOptions Label { get; set; }
 
         /// <summary>
         /// Configuration for <c>type=numeric</c> fields.
         /// </summary>
         [JsonProperty("numeric")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("numeric")]
+#endif
         public SessionCustomFieldNumericOptions Numeric { get; set; }
 
         /// <summary>
@@ -35,12 +50,18 @@ public class SessionCustomFieldOptions : INestedOptions
         /// Session. Defaults to <c>false</c>.
         /// </summary>
         [JsonProperty("optional")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("optional")]
+#endif
         public bool? Optional { get; set; }
 
         /// <summary>
         /// Configuration for <c>type=text</c> fields.
         /// </summary>
         [JsonProperty("text")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("text")]
+#endif
         public SessionCustomFieldTextOptions Text { get; set; }
 
         /// <summary>
@@ -48,6 +69,9 @@ public class SessionCustomFieldOptions : INestedOptions
         /// One of: <c>dropdown</c>, <c>numeric</c>, or <c>text</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionCustomFieldTextOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionCustomFieldTextOptions.cs
index 760ed9be8e..9bc477c0de 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionCustomFieldTextOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionCustomFieldTextOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCustomFieldTextOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class SessionCustomFieldTextOptions : INestedOptions
         /// The value that will pre-fill the field on the payment page.
         /// </summary>
         [JsonProperty("default_value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_value")]
+#endif
         public string DefaultValue { get; set; }
 
         /// <summary>
         /// The maximum character length constraint for the customer's input.
         /// </summary>
         [JsonProperty("maximum_length")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("maximum_length")]
+#endif
         public long? MaximumLength { get; set; }
 
         /// <summary>
         /// The minimum character length requirement for the customer's input.
         /// </summary>
         [JsonProperty("minimum_length")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("minimum_length")]
+#endif
         public long? MinimumLength { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionCustomTextAfterSubmitOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionCustomTextAfterSubmitOptions.cs
index 64b5ff75ef..c803f9e155 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionCustomTextAfterSubmitOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionCustomTextAfterSubmitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCustomTextAfterSubmitOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionCustomTextAfterSubmitOptions : INestedOptions
         /// Text may be up to 1200 characters in length.
         /// </summary>
         [JsonProperty("message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("message")]
+#endif
         public string Message { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionCustomTextOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionCustomTextOptions.cs
index 25fbef606f..3e78b48b5b 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionCustomTextOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionCustomTextOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCustomTextOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class SessionCustomTextOptions : INestedOptions
         /// Custom text that should be displayed after the payment confirmation button.
         /// </summary>
         [JsonProperty("after_submit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("after_submit")]
+#endif
         public SessionCustomTextAfterSubmitOptions AfterSubmit { get; set; }
 
         /// <summary>
         /// Custom text that should be displayed alongside shipping address collection.
         /// </summary>
         [JsonProperty("shipping_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_address")]
+#endif
         public SessionCustomTextShippingAddressOptions ShippingAddress { get; set; }
 
         /// <summary>
         /// Custom text that should be displayed alongside the payment confirmation button.
         /// </summary>
         [JsonProperty("submit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("submit")]
+#endif
         public SessionCustomTextSubmitOptions Submit { get; set; }
 
         /// <summary>
@@ -28,6 +40,9 @@ public class SessionCustomTextOptions : INestedOptions
         /// text.
         /// </summary>
         [JsonProperty("terms_of_service_acceptance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("terms_of_service_acceptance")]
+#endif
         public SessionCustomTextTermsOfServiceAcceptanceOptions TermsOfServiceAcceptance { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionCustomTextShippingAddressOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionCustomTextShippingAddressOptions.cs
index 00bd79bda4..44676934e7 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionCustomTextShippingAddressOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionCustomTextShippingAddressOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCustomTextShippingAddressOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionCustomTextShippingAddressOptions : INestedOptions
         /// Text may be up to 1200 characters in length.
         /// </summary>
         [JsonProperty("message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("message")]
+#endif
         public string Message { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionCustomTextSubmitOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionCustomTextSubmitOptions.cs
index d4dd7fa9eb..f9a7c09811 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionCustomTextSubmitOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionCustomTextSubmitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCustomTextSubmitOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionCustomTextSubmitOptions : INestedOptions
         /// Text may be up to 1200 characters in length.
         /// </summary>
         [JsonProperty("message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("message")]
+#endif
         public string Message { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionCustomTextTermsOfServiceAcceptanceOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionCustomTextTermsOfServiceAcceptanceOptions.cs
index d5a1c55d09..dcdde77fc9 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionCustomTextTermsOfServiceAcceptanceOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionCustomTextTermsOfServiceAcceptanceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCustomTextTermsOfServiceAcceptanceOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionCustomTextTermsOfServiceAcceptanceOptions : INestedOptions
         /// Text may be up to 1200 characters in length.
         /// </summary>
         [JsonProperty("message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("message")]
+#endif
         public string Message { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionCustomerDetailsOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionCustomerDetailsOptions.cs
index eda28fe6c0..f012f9cead 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionCustomerDetailsOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionCustomerDetailsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCustomerDetailsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionCustomerDetailsOptions : INestedOptions
         /// Customer's email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionCustomerUpdateOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionCustomerUpdateOptions.cs
index 2145f32182..3c54c37f68 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionCustomerUpdateOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionCustomerUpdateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCustomerUpdateOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class SessionCustomerUpdateOptions : INestedOptions
         /// One of: <c>auto</c>, or <c>never</c>.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public string Address { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class SessionCustomerUpdateOptions : INestedOptions
         /// One of: <c>auto</c>, or <c>never</c>.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -29,6 +38,9 @@ public class SessionCustomerUpdateOptions : INestedOptions
         /// One of: <c>auto</c>, or <c>never</c>.
         /// </summary>
         [JsonProperty("shipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping")]
+#endif
         public string Shipping { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionDiscountOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionDiscountOptions.cs
index 54601a46a7..94c8b8b9e5 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionDiscountOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionDiscountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionDiscountOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class SessionDiscountOptions : INestedOptions
         /// The ID of the coupon to apply to this Session.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
         /// The ID of a promotion code to apply to this Session.
         /// </summary>
         [JsonProperty("promotion_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotion_code")]
+#endif
         public string PromotionCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionInvoiceCreationInvoiceDataCustomFieldOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionInvoiceCreationInvoiceDataCustomFieldOptions.cs
index bc144d9b97..bbf5d04eef 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionInvoiceCreationInvoiceDataCustomFieldOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionInvoiceCreationInvoiceDataCustomFieldOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionInvoiceCreationInvoiceDataCustomFieldOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class SessionInvoiceCreationInvoiceDataCustomFieldOptions : INestedOption
         /// The name of the custom field. This may be up to 40 characters.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// The value of the custom field. This may be up to 140 characters.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionInvoiceCreationInvoiceDataIssuerOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionInvoiceCreationInvoiceDataIssuerOptions.cs
index d1bd4e3e22..4db17ef3da 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionInvoiceCreationInvoiceDataIssuerOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionInvoiceCreationInvoiceDataIssuerOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionInvoiceCreationInvoiceDataIssuerOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionInvoiceCreationInvoiceDataIssuerOptions : INestedOptions
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public string Account { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class SessionInvoiceCreationInvoiceDataIssuerOptions : INestedOptions
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionInvoiceCreationInvoiceDataOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionInvoiceCreationInvoiceDataOptions.cs
index 004ae56978..a54b2a2b29 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionInvoiceCreationInvoiceDataOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionInvoiceCreationInvoiceDataOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Checkout
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionInvoiceCreationInvoiceDataOptions : INestedOptions, IHasMetadata
     {
@@ -10,24 +13,36 @@ public class SessionInvoiceCreationInvoiceDataOptions : INestedOptions, IHasMeta
         /// The account tax IDs associated with the invoice.
         /// </summary>
         [JsonProperty("account_tax_ids")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_tax_ids")]
+#endif
         public List<string> AccountTaxIds { get; set; }
 
         /// <summary>
         /// Default custom fields to be displayed on invoices for this customer.
         /// </summary>
         [JsonProperty("custom_fields")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_fields")]
+#endif
         public List<SessionInvoiceCreationInvoiceDataCustomFieldOptions> CustomFields { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// Default footer to be displayed on invoices for this customer.
         /// </summary>
         [JsonProperty("footer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("footer")]
+#endif
         public string Footer { get; set; }
 
         /// <summary>
@@ -35,6 +50,9 @@ public class SessionInvoiceCreationInvoiceDataOptions : INestedOptions, IHasMeta
         /// branding and support information of the specified account.
         /// </summary>
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public SessionInvoiceCreationInvoiceDataIssuerOptions Issuer { get; set; }
 
         /// <summary>
@@ -44,12 +62,18 @@ public class SessionInvoiceCreationInvoiceDataOptions : INestedOptions, IHasMeta
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Default options for invoice PDF rendering for this customer.
         /// </summary>
         [JsonProperty("rendering_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("rendering_options")]
+#endif
         public SessionInvoiceCreationInvoiceDataRenderingOptionsOptions RenderingOptions { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionInvoiceCreationInvoiceDataRenderingOptionsOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionInvoiceCreationInvoiceDataRenderingOptionsOptions.cs
index 75714724a7..fb921655aa 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionInvoiceCreationInvoiceDataRenderingOptionsOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionInvoiceCreationInvoiceDataRenderingOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionInvoiceCreationInvoiceDataRenderingOptionsOptions : INestedOptions
     {
@@ -14,6 +17,9 @@ public class SessionInvoiceCreationInvoiceDataRenderingOptionsOptions : INestedO
         /// One of: <c>exclude_tax</c>, or <c>include_inclusive_tax</c>.
         /// </summary>
         [JsonProperty("amount_tax_display")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_tax_display")]
+#endif
         public string AmountTaxDisplay { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionInvoiceCreationOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionInvoiceCreationOptions.cs
index 1bcb8db3a0..ed77c9528a 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionInvoiceCreationOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionInvoiceCreationOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionInvoiceCreationOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class SessionInvoiceCreationOptions : INestedOptions
         /// Set to <c>true</c> to enable invoice creation.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
         /// Parameters passed when creating invoices for payment-mode Checkout Sessions.
         /// </summary>
         [JsonProperty("invoice_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_data")]
+#endif
         public SessionInvoiceCreationInvoiceDataOptions InvoiceData { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionLineItemAdjustableQuantityOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionLineItemAdjustableQuantityOptions.cs
index 91ee753b30..75c51df28e 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionLineItemAdjustableQuantityOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionLineItemAdjustableQuantityOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionLineItemAdjustableQuantityOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionLineItemAdjustableQuantityOptions : INestedOptions
         /// Set to true if the quantity can be adjusted to any non-negative integer.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class SessionLineItemAdjustableQuantityOptions : INestedOptions
         /// value is 99. You can specify a value up to 999999.
         /// </summary>
         [JsonProperty("maximum")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("maximum")]
+#endif
         public long? Maximum { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class SessionLineItemAdjustableQuantityOptions : INestedOptions
         /// this value is 0.
         /// </summary>
         [JsonProperty("minimum")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("minimum")]
+#endif
         public long? Minimum { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionLineItemOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionLineItemOptions.cs
index fc14c3f0aa..efdeb896d5 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionLineItemOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionLineItemOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Checkout
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionLineItemOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class SessionLineItemOptions : INestedOptions
         /// during Checkout.
         /// </summary>
         [JsonProperty("adjustable_quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("adjustable_quantity")]
+#endif
         public SessionLineItemAdjustableQuantityOptions AdjustableQuantity { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class SessionLineItemOptions : INestedOptions
         /// support the following countries: US, GB, AU, and all countries in the EU.
         /// </summary>
         [JsonProperty("dynamic_tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dynamic_tax_rates")]
+#endif
         public List<string> DynamicTaxRates { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class SessionLineItemOptions : INestedOptions
         /// <c>price_data</c> is required.
         /// </summary>
         [JsonProperty("price")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price")]
+#endif
         public string Price { get; set; }
 
         /// <summary>
@@ -34,6 +46,9 @@ public class SessionLineItemOptions : INestedOptions
         /// object inline. One of <c>price</c> or <c>price_data</c> is required.
         /// </summary>
         [JsonProperty("price_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price_data")]
+#endif
         public SessionLineItemPriceDataOptions PriceData { get; set; }
 
         /// <summary>
@@ -41,6 +56,9 @@ public class SessionLineItemOptions : INestedOptions
         /// <c>recurring.usage_type=metered</c>.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         /// <summary>
@@ -48,6 +66,9 @@ public class SessionLineItemOptions : INestedOptions
         /// line item.
         /// </summary>
         [JsonProperty("tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rates")]
+#endif
         public List<string> TaxRates { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionLineItemPriceDataOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionLineItemPriceDataOptions.cs
index 980a337ced..b3eae49af9 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionLineItemPriceDataOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionLineItemPriceDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionLineItemPriceDataOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class SessionLineItemPriceDataOptions : INestedOptions
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class SessionLineItemPriceDataOptions : INestedOptions
         /// <c>product_data</c> is required.
         /// </summary>
         [JsonProperty("product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product")]
+#endif
         public string Product { get; set; }
 
         /// <summary>
@@ -25,12 +34,18 @@ public class SessionLineItemPriceDataOptions : INestedOptions
         /// <c>product_data</c> is required.
         /// </summary>
         [JsonProperty("product_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_data")]
+#endif
         public SessionLineItemPriceDataProductDataOptions ProductData { get; set; }
 
         /// <summary>
         /// The recurring components of a price such as <c>interval</c> and <c>interval_count</c>.
         /// </summary>
         [JsonProperty("recurring")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("recurring")]
+#endif
         public SessionLineItemPriceDataRecurringOptions Recurring { get; set; }
 
         /// <summary>
@@ -43,6 +58,9 @@ public class SessionLineItemPriceDataOptions : INestedOptions
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
@@ -50,6 +68,9 @@ public class SessionLineItemPriceDataOptions : INestedOptions
         /// One of <c>unit_amount</c> or <c>unit_amount_decimal</c> is required.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
@@ -58,6 +79,9 @@ public class SessionLineItemPriceDataOptions : INestedOptions
         /// <c>unit_amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionLineItemPriceDataProductDataOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionLineItemPriceDataProductDataOptions.cs
index cc96f9695d..b0345ceca0 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionLineItemPriceDataProductDataOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionLineItemPriceDataProductDataOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Checkout
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionLineItemPriceDataProductDataOptions : INestedOptions, IHasMetadata
     {
@@ -12,6 +15,9 @@ public class SessionLineItemPriceDataProductDataOptions : INestedOptions, IHasMe
         /// rendering purposes.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class SessionLineItemPriceDataProductDataOptions : INestedOptions, IHasMe
         /// customer.
         /// </summary>
         [JsonProperty("images")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("images")]
+#endif
         public List<string> Images { get; set; }
 
         /// <summary>
@@ -28,18 +37,27 @@ public class SessionLineItemPriceDataProductDataOptions : INestedOptions, IHasMe
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The product's name, meant to be displayable to the customer.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// A <a href="https://stripe.com/docs/tax/tax-categories">tax code</a> ID.
         /// </summary>
         [JsonProperty("tax_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_code")]
+#endif
         public string TaxCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionLineItemPriceDataRecurringOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionLineItemPriceDataRecurringOptions.cs
index 7e4a086762..c39ad884de 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionLineItemPriceDataRecurringOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionLineItemPriceDataRecurringOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionLineItemPriceDataRecurringOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class SessionLineItemPriceDataRecurringOptions : INestedOptions
         /// One of: <c>day</c>, <c>month</c>, <c>week</c>, or <c>year</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class SessionLineItemPriceDataRecurringOptions : INestedOptions
         /// years interval allowed (3 years, 36 months, or 156 weeks).
         /// </summary>
         [JsonProperty("interval_count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_count")]
+#endif
         public long? IntervalCount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionListOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionListOptions.cs
index c242456d67..353ca7b79d 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionListOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionListOptions : ListOptionsWithCreated
     {
@@ -9,24 +12,36 @@ public class SessionListOptions : ListOptionsWithCreated
         /// Only return the Checkout Sessions for the Customer specified.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
         /// Only return the Checkout Sessions for the Customer details specified.
         /// </summary>
         [JsonProperty("customer_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_details")]
+#endif
         public SessionCustomerDetailsOptions CustomerDetails { get; set; }
 
         /// <summary>
         /// Only return the Checkout Session for the PaymentIntent specified.
         /// </summary>
         [JsonProperty("payment_intent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_intent")]
+#endif
         public string PaymentIntent { get; set; }
 
         /// <summary>
         /// Only return the Checkout Sessions for the Payment Link specified.
         /// </summary>
         [JsonProperty("payment_link")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_link")]
+#endif
         public string PaymentLink { get; set; }
 
         /// <summary>
@@ -34,12 +49,18 @@ public class SessionListOptions : ListOptionsWithCreated
         /// One of: <c>complete</c>, <c>expired</c>, or <c>open</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
         /// Only return the Checkout Session for the subscription specified.
         /// </summary>
         [JsonProperty("subscription")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription")]
+#endif
         public string Subscription { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentIntentDataOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentIntentDataOptions.cs
index 266c3c1b04..e4a651b845 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentIntentDataOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentIntentDataOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Checkout
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentIntentDataOptions : INestedOptions, IHasMetadata
     {
@@ -15,6 +18,9 @@ public class SessionPaymentIntentDataOptions : INestedOptions, IHasMetadata
         /// accounts</a>.
         /// </summary>
         [JsonProperty("application_fee_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_amount")]
+#endif
         public long? ApplicationFeeAmount { get; set; }
 
         /// <summary>
@@ -22,12 +28,18 @@ public class SessionPaymentIntentDataOptions : INestedOptions, IHasMetadata
         /// One of: <c>automatic</c>, <c>automatic_async</c>, or <c>manual</c>.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -37,6 +49,9 @@ public class SessionPaymentIntentDataOptions : INestedOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -45,6 +60,9 @@ public class SessionPaymentIntentDataOptions : INestedOptions, IHasMetadata
         /// for connected accounts</a>.
         /// </summary>
         [JsonProperty("on_behalf_of")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+#endif
         public string OnBehalfOf { get; set; }
 
         /// <summary>
@@ -54,6 +72,9 @@ public class SessionPaymentIntentDataOptions : INestedOptions, IHasMetadata
         /// settings</a>.
         /// </summary>
         [JsonProperty("receipt_email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("receipt_email")]
+#endif
         public string ReceiptEmail { get; set; }
 
         /// <summary>
@@ -80,12 +101,18 @@ public class SessionPaymentIntentDataOptions : INestedOptions, IHasMetadata
         /// One of: <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
         /// Shipping information for this payment.
         /// </summary>
         [JsonProperty("shipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping")]
+#endif
         public ChargeShippingOptions Shipping { get; set; }
 
         /// <summary>
@@ -100,6 +127,9 @@ public class SessionPaymentIntentDataOptions : INestedOptions, IHasMetadata
         /// instead.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
 
         /// <summary>
@@ -109,6 +139,9 @@ public class SessionPaymentIntentDataOptions : INestedOptions, IHasMetadata
         /// customer's statement.
         /// </summary>
         [JsonProperty("statement_descriptor_suffix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_suffix")]
+#endif
         public string StatementDescriptorSuffix { get; set; }
 
         /// <summary>
@@ -118,6 +151,9 @@ public class SessionPaymentIntentDataOptions : INestedOptions, IHasMetadata
         /// accounts</a>.
         /// </summary>
         [JsonProperty("transfer_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_data")]
+#endif
         public SessionPaymentIntentDataTransferDataOptions TransferData { get; set; }
 
         /// <summary>
@@ -127,6 +163,9 @@ public class SessionPaymentIntentDataOptions : INestedOptions, IHasMetadata
         /// connected accounts</a> for details.
         /// </summary>
         [JsonProperty("transfer_group")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_group")]
+#endif
         public string TransferGroup { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentIntentDataTransferDataOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentIntentDataTransferDataOptions.cs
index bd4cc0d66e..9beb78e00b 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentIntentDataTransferDataOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentIntentDataTransferDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentIntentDataTransferDataOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionPaymentIntentDataTransferDataOptions : INestedOptions
         /// The amount that will be transferred automatically when a charge succeeds.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class SessionPaymentIntentDataTransferDataOptions : INestedOptions
         /// <c>transfer</c> field.
         /// </summary>
         [JsonProperty("destination")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination")]
+#endif
         public string Destination { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodDataOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodDataOptions.cs
index b2e023e017..889f14a230 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodDataOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodDataOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class SessionPaymentMethodDataOptions : INestedOptions
         /// One of: <c>always</c>, <c>limited</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("allow_redisplay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allow_redisplay")]
+#endif
         public string AllowRedisplay { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsAcssDebitMandateOptionsOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsAcssDebitMandateOptionsOptions.cs
index 87a5bb3248..25080c02d7 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsAcssDebitMandateOptionsOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsAcssDebitMandateOptionsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Checkout
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsAcssDebitMandateOptionsOptions : INestedOptions
     {
@@ -14,6 +17,9 @@ public class SessionPaymentMethodOptionsAcssDebitMandateOptionsOptions : INested
         /// Intent.
         /// </summary>
         [JsonProperty("custom_mandate_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_mandate_url")]
+#endif
         public string CustomMandateUrl { get; set; }
 
         /// <summary>
@@ -22,6 +28,9 @@ public class SessionPaymentMethodOptionsAcssDebitMandateOptionsOptions : INested
         /// One of: <c>invoice</c>, or <c>subscription</c>.
         /// </summary>
         [JsonProperty("default_for")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_for")]
+#endif
         public List<string> DefaultFor { get; set; }
 
         /// <summary>
@@ -29,6 +38,9 @@ public class SessionPaymentMethodOptionsAcssDebitMandateOptionsOptions : INested
         /// 'interval' or 'combined'.
         /// </summary>
         [JsonProperty("interval_description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_description")]
+#endif
         public string IntervalDescription { get; set; }
 
         /// <summary>
@@ -36,6 +48,9 @@ public class SessionPaymentMethodOptionsAcssDebitMandateOptionsOptions : INested
         /// One of: <c>combined</c>, <c>interval</c>, or <c>sporadic</c>.
         /// </summary>
         [JsonProperty("payment_schedule")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_schedule")]
+#endif
         public string PaymentSchedule { get; set; }
 
         /// <summary>
@@ -43,6 +58,9 @@ public class SessionPaymentMethodOptionsAcssDebitMandateOptionsOptions : INested
         /// One of: <c>business</c>, or <c>personal</c>.
         /// </summary>
         [JsonProperty("transaction_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_type")]
+#endif
         public string TransactionType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsAcssDebitOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsAcssDebitOptions.cs
index 785cb47fec..2985b4afbe 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsAcssDebitOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsAcssDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsAcssDebitOptions : INestedOptions
     {
@@ -12,12 +15,18 @@ public class SessionPaymentMethodOptionsAcssDebitOptions : INestedOptions
         /// One of: <c>cad</c>, or <c>usd</c>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// Additional fields for Mandate creation.
         /// </summary>
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public SessionPaymentMethodOptionsAcssDebitMandateOptionsOptions MandateOptions { get; set; }
 
         /// <summary>
@@ -42,6 +51,9 @@ public class SessionPaymentMethodOptionsAcssDebitOptions : INestedOptions
         /// One of: <c>none</c>, <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
@@ -50,6 +62,9 @@ public class SessionPaymentMethodOptionsAcssDebitOptions : INestedOptions
         /// and 15 calendar days from now.
         /// </summary>
         [JsonProperty("target_date")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("target_date")]
+#endif
         public string TargetDate { get; set; }
 
         /// <summary>
@@ -57,6 +72,9 @@ public class SessionPaymentMethodOptionsAcssDebitOptions : INestedOptions
         /// One of: <c>automatic</c>, <c>instant</c>, or <c>microdeposits</c>.
         /// </summary>
         [JsonProperty("verification_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification_method")]
+#endif
         public string VerificationMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsAffirmOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsAffirmOptions.cs
index 886e2795f5..171f79ddfb 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsAffirmOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsAffirmOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsAffirmOptions : INestedOptions
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsAffirmOptions : INestedOptions
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsAfterpayClearpayOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsAfterpayClearpayOptions.cs
index aeb9b7b351..b6f57a4a62 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsAfterpayClearpayOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsAfterpayClearpayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsAfterpayClearpayOptions : INestedOptions
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsAfterpayClearpayOptions : INestedOptions
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsAlipayOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsAlipayOptions.cs
index 18d2466180..bdb20b1ac0 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsAlipayOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsAlipayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsAlipayOptions : INestedOptions
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsAlipayOptions : INestedOptions
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsAmazonPayOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsAmazonPayOptions.cs
index 9e51348170..b059be4765 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsAmazonPayOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsAmazonPayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsAmazonPayOptions : INestedOptions
     {
@@ -27,6 +30,9 @@ public class SessionPaymentMethodOptionsAmazonPayOptions : INestedOptions
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsAuBecsDebitOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsAuBecsDebitOptions.cs
index dd48f96dea..c27eedda7f 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsAuBecsDebitOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsAuBecsDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsAuBecsDebitOptions : INestedOptions
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsAuBecsDebitOptions : INestedOptions
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
@@ -34,6 +40,9 @@ public class SessionPaymentMethodOptionsAuBecsDebitOptions : INestedOptions
         /// and 15 calendar days from now.
         /// </summary>
         [JsonProperty("target_date")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("target_date")]
+#endif
         public string TargetDate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsBacsDebitMandateOptionsOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsBacsDebitMandateOptionsOptions.cs
index e0318c35e5..7d4d906be8 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsBacsDebitMandateOptionsOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsBacsDebitMandateOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsBacsDebitMandateOptionsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class SessionPaymentMethodOptionsBacsDebitMandateOptionsOptions : INested
         /// '/', '_', '-', '&amp;', '.'. Cannot begin with 'DDIC' or 'STRIPE'.
         /// </summary>
         [JsonProperty("reference_prefix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference_prefix")]
+#endif
         public string ReferencePrefix { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsBacsDebitOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsBacsDebitOptions.cs
index 97821c2330..a8a85949d3 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsBacsDebitOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsBacsDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsBacsDebitOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionPaymentMethodOptionsBacsDebitOptions : INestedOptions
         /// Additional fields for Mandate creation.
         /// </summary>
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public SessionPaymentMethodOptionsBacsDebitMandateOptionsOptions MandateOptions { get; set; }
 
         /// <summary>
@@ -33,6 +39,9 @@ public class SessionPaymentMethodOptionsBacsDebitOptions : INestedOptions
         /// One of: <c>none</c>, <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
@@ -41,6 +50,9 @@ public class SessionPaymentMethodOptionsBacsDebitOptions : INestedOptions
         /// and 15 calendar days from now.
         /// </summary>
         [JsonProperty("target_date")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("target_date")]
+#endif
         public string TargetDate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsBancontactOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsBancontactOptions.cs
index 63aae6e36e..ab27f548e4 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsBancontactOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsBancontactOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsBancontactOptions : INestedOptions
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsBancontactOptions : INestedOptions
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsBoletoOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsBoletoOptions.cs
index 097d7fe3d6..b0241fe7ee 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsBoletoOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsBoletoOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsBoletoOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class SessionPaymentMethodOptionsBoletoOptions : INestedOptions
         /// expire on Wednesday at 23:59 America/Sao_Paulo time.
         /// </summary>
         [JsonProperty("expires_after_days")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_after_days")]
+#endif
         public long? ExpiresAfterDays { get; set; }
 
         /// <summary>
@@ -35,6 +41,9 @@ public class SessionPaymentMethodOptionsBoletoOptions : INestedOptions
         /// One of: <c>none</c>, <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsCardInstallmentsOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsCardInstallmentsOptions.cs
index f9aed6548b..5ef080b710 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsCardInstallmentsOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsCardInstallmentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsCardInstallmentsOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SessionPaymentMethodOptionsCardInstallmentsOptions : INestedOptions
         /// prevent any installment plan from applying to a payment.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsCardOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsCardOptions.cs
index 63419f3427..a347e10daf 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsCardOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsCardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsCardOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionPaymentMethodOptionsCardOptions : INestedOptions
         /// Installment options for card payments.
         /// </summary>
         [JsonProperty("installments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("installments")]
+#endif
         public SessionPaymentMethodOptionsCardInstallmentsOptions Installments { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class SessionPaymentMethodOptionsCardOptions : INestedOptions
         /// One of: <c>if_available</c>, or <c>never</c>.
         /// </summary>
         [JsonProperty("request_extended_authorization")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_extended_authorization")]
+#endif
         public string RequestExtendedAuthorization { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class SessionPaymentMethodOptionsCardOptions : INestedOptions
         /// One of: <c>if_available</c>, or <c>never</c>.
         /// </summary>
         [JsonProperty("request_incremental_authorization")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_incremental_authorization")]
+#endif
         public string RequestIncrementalAuthorization { get; set; }
 
         /// <summary>
@@ -34,6 +46,9 @@ public class SessionPaymentMethodOptionsCardOptions : INestedOptions
         /// One of: <c>if_available</c>, or <c>never</c>.
         /// </summary>
         [JsonProperty("request_multicapture")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_multicapture")]
+#endif
         public string RequestMulticapture { get; set; }
 
         /// <summary>
@@ -42,6 +57,9 @@ public class SessionPaymentMethodOptionsCardOptions : INestedOptions
         /// One of: <c>if_available</c>, or <c>never</c>.
         /// </summary>
         [JsonProperty("request_overcapture")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_overcapture")]
+#endif
         public string RequestOvercapture { get; set; }
 
         /// <summary>
@@ -57,6 +75,9 @@ public class SessionPaymentMethodOptionsCardOptions : INestedOptions
         /// One of: <c>any</c>, <c>automatic</c>, or <c>challenge</c>.
         /// </summary>
         [JsonProperty("request_three_d_secure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_three_d_secure")]
+#endif
         public string RequestThreeDSecure { get; set; }
 
         /// <summary>
@@ -64,6 +85,9 @@ public class SessionPaymentMethodOptionsCardOptions : INestedOptions
         /// card brands.
         /// </summary>
         [JsonProperty("restrictions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("restrictions")]
+#endif
         public SessionPaymentMethodOptionsCardRestrictionsOptions Restrictions { get; set; }
 
         /// <summary>
@@ -88,6 +112,9 @@ public class SessionPaymentMethodOptionsCardOptions : INestedOptions
         /// One of: <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
@@ -98,6 +125,9 @@ public class SessionPaymentMethodOptionsCardOptions : INestedOptions
         /// (including separators) will appear truncated to 22 characters.
         /// </summary>
         [JsonProperty("statement_descriptor_suffix_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_suffix_kana")]
+#endif
         public string StatementDescriptorSuffixKana { get; set; }
 
         /// <summary>
@@ -108,6 +138,9 @@ public class SessionPaymentMethodOptionsCardOptions : INestedOptions
         /// (including separators) will appear truncated to 17 characters.
         /// </summary>
         [JsonProperty("statement_descriptor_suffix_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_suffix_kanji")]
+#endif
         public string StatementDescriptorSuffixKanji { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsCardRestrictionsOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsCardRestrictionsOptions.cs
index 174a9174d4..d13dd1cc1d 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsCardRestrictionsOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsCardRestrictionsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Checkout
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsCardRestrictionsOptions : INestedOptions
     {
@@ -13,6 +16,9 @@ public class SessionPaymentMethodOptionsCardRestrictionsOptions : INestedOptions
         /// <c>visa</c>.
         /// </summary>
         [JsonProperty("brands_blocked")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("brands_blocked")]
+#endif
         public List<string> BrandsBlocked { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsCashappOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsCashappOptions.cs
index 1899c1e58e..59bcd4305c 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsCashappOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsCashappOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsCashappOptions : INestedOptions
     {
@@ -27,6 +30,9 @@ public class SessionPaymentMethodOptionsCashappOptions : INestedOptions
         /// One of: <c>none</c>, <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransferOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransferOptions.cs
index 1a01e54ae7..53bef818d1 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransferOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransferOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransferOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SessionPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransfe
         /// <c>BE</c>, <c>DE</c>, <c>ES</c>, <c>FR</c>, <c>IE</c>, or <c>NL</c>.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsCustomerBalanceBankTransferOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsCustomerBalanceBankTransferOptions.cs
index 1d3aba71ea..e6ee50335a 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsCustomerBalanceBankTransferOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsCustomerBalanceBankTransferOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Checkout
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsCustomerBalanceBankTransferOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SessionPaymentMethodOptionsCustomerBalanceBankTransferOptions : INe
         /// Configuration for eu_bank_transfer funding type.
         /// </summary>
         [JsonProperty("eu_bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eu_bank_transfer")]
+#endif
         public SessionPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransferOptions EuBankTransfer { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class SessionPaymentMethodOptionsCustomerBalanceBankTransferOptions : INe
         /// <c>swift</c>, or <c>zengin</c>.
         /// </summary>
         [JsonProperty("requested_address_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested_address_types")]
+#endif
         public List<string> RequestedAddressTypes { get; set; }
 
         /// <summary>
@@ -29,6 +38,9 @@ public class SessionPaymentMethodOptionsCustomerBalanceBankTransferOptions : INe
         /// <c>mx_bank_transfer</c>, or <c>us_bank_transfer</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsCustomerBalanceOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsCustomerBalanceOptions.cs
index b02213e282..7b665c1389 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsCustomerBalanceOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsCustomerBalanceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsCustomerBalanceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SessionPaymentMethodOptionsCustomerBalanceOptions : INestedOptions
         /// <c>bank_transfer</c>.
         /// </summary>
         [JsonProperty("bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_transfer")]
+#endif
         public SessionPaymentMethodOptionsCustomerBalanceBankTransferOptions BankTransfer { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class SessionPaymentMethodOptionsCustomerBalanceOptions : INestedOptions
         /// balance. Permitted values include: <c>bank_transfer</c>.
         /// </summary>
         [JsonProperty("funding_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding_type")]
+#endif
         public string FundingType { get; set; }
 
         /// <summary>
@@ -40,6 +49,9 @@ public class SessionPaymentMethodOptionsCustomerBalanceOptions : INestedOptions
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsEpsOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsEpsOptions.cs
index e6bf2b51b6..0a04994e48 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsEpsOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsEpsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsEpsOptions : INestedOptions
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsEpsOptions : INestedOptions
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsFpxOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsFpxOptions.cs
index 0acde9c10f..c9a94e02b6 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsFpxOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsFpxOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsFpxOptions : INestedOptions
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsFpxOptions : INestedOptions
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsGiropayOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsGiropayOptions.cs
index f1f32e608d..7008c7fe4f 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsGiropayOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsGiropayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsGiropayOptions : INestedOptions
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsGiropayOptions : INestedOptions
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsGrabpayOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsGrabpayOptions.cs
index f98e442209..0aea4b2a13 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsGrabpayOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsGrabpayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsGrabpayOptions : INestedOptions
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsGrabpayOptions : INestedOptions
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsIdealOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsIdealOptions.cs
index 92d3be1df4..cf381c8dad 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsIdealOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsIdealOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsIdealOptions : INestedOptions
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsIdealOptions : INestedOptions
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsKakaoPayOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsKakaoPayOptions.cs
index c4fc94aed6..597af6c782 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsKakaoPayOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsKakaoPayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsKakaoPayOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionPaymentMethodOptionsKakaoPayOptions : INestedOptions
         /// Controls when the funds will be captured from the customer's account.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
@@ -33,6 +39,9 @@ public class SessionPaymentMethodOptionsKakaoPayOptions : INestedOptions
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsKlarnaOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsKlarnaOptions.cs
index c248f0f058..746998ca22 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsKlarnaOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsKlarnaOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsKlarnaOptions : INestedOptions
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsKlarnaOptions : INestedOptions
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsKonbiniOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsKonbiniOptions.cs
index 29a8622944..a7083b84bf 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsKonbiniOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsKonbiniOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsKonbiniOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class SessionPaymentMethodOptionsKonbiniOptions : INestedOptions
         /// Wednesday 23:59:59 JST. Defaults to 3 days.
         /// </summary>
         [JsonProperty("expires_after_days")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_after_days")]
+#endif
         public long? ExpiresAfterDays { get; set; }
 
         /// <summary>
@@ -35,6 +41,9 @@ public class SessionPaymentMethodOptionsKonbiniOptions : INestedOptions
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsKrCardOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsKrCardOptions.cs
index e14c0e24dd..925cfb8a76 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsKrCardOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsKrCardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsKrCardOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionPaymentMethodOptionsKrCardOptions : INestedOptions
         /// Controls when the funds will be captured from the customer's account.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
@@ -33,6 +39,9 @@ public class SessionPaymentMethodOptionsKrCardOptions : INestedOptions
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsLinkOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsLinkOptions.cs
index f1d097fcbb..2d12f8fc60 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsLinkOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsLinkOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsLinkOptions : INestedOptions
     {
@@ -27,6 +30,9 @@ public class SessionPaymentMethodOptionsLinkOptions : INestedOptions
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsMobilepayOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsMobilepayOptions.cs
index 74212b5efe..576a4e02b4 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsMobilepayOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsMobilepayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsMobilepayOptions : INestedOptions
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsMobilepayOptions : INestedOptions
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsMultibancoOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsMultibancoOptions.cs
index 9ce87d8dde..206d49ed87 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsMultibancoOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsMultibancoOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsMultibancoOptions : INestedOptions
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsMultibancoOptions : INestedOptions
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsNaverPayOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsNaverPayOptions.cs
index a9548835c2..0e37ab5cf7 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsNaverPayOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsNaverPayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsNaverPayOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionPaymentMethodOptionsNaverPayOptions : INestedOptions
         /// Controls when the funds will be captured from the customer's account.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
@@ -33,6 +39,9 @@ public class SessionPaymentMethodOptionsNaverPayOptions : INestedOptions
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsOptions.cs
index 8df2aa8c9c..45c11391c5 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsOptions : INestedOptions
     {
@@ -9,234 +12,351 @@ public class SessionPaymentMethodOptionsOptions : INestedOptions
         /// contains details about the ACSS Debit payment method options.
         /// </summary>
         [JsonProperty("acss_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acss_debit")]
+#endif
         public SessionPaymentMethodOptionsAcssDebitOptions AcssDebit { get; set; }
 
         /// <summary>
         /// contains details about the Affirm payment method options.
         /// </summary>
         [JsonProperty("affirm")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("affirm")]
+#endif
         public SessionPaymentMethodOptionsAffirmOptions Affirm { get; set; }
 
         /// <summary>
         /// contains details about the Afterpay Clearpay payment method options.
         /// </summary>
         [JsonProperty("afterpay_clearpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("afterpay_clearpay")]
+#endif
         public SessionPaymentMethodOptionsAfterpayClearpayOptions AfterpayClearpay { get; set; }
 
         /// <summary>
         /// contains details about the Alipay payment method options.
         /// </summary>
         [JsonProperty("alipay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alipay")]
+#endif
         public SessionPaymentMethodOptionsAlipayOptions Alipay { get; set; }
 
         /// <summary>
         /// contains details about the AmazonPay payment method options.
         /// </summary>
         [JsonProperty("amazon_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amazon_pay")]
+#endif
         public SessionPaymentMethodOptionsAmazonPayOptions AmazonPay { get; set; }
 
         /// <summary>
         /// contains details about the AU Becs Debit payment method options.
         /// </summary>
         [JsonProperty("au_becs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("au_becs_debit")]
+#endif
         public SessionPaymentMethodOptionsAuBecsDebitOptions AuBecsDebit { get; set; }
 
         /// <summary>
         /// contains details about the Bacs Debit payment method options.
         /// </summary>
         [JsonProperty("bacs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bacs_debit")]
+#endif
         public SessionPaymentMethodOptionsBacsDebitOptions BacsDebit { get; set; }
 
         /// <summary>
         /// contains details about the Bancontact payment method options.
         /// </summary>
         [JsonProperty("bancontact")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bancontact")]
+#endif
         public SessionPaymentMethodOptionsBancontactOptions Bancontact { get; set; }
 
         /// <summary>
         /// contains details about the Boleto payment method options.
         /// </summary>
         [JsonProperty("boleto")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("boleto")]
+#endif
         public SessionPaymentMethodOptionsBoletoOptions Boleto { get; set; }
 
         /// <summary>
         /// contains details about the Card payment method options.
         /// </summary>
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public SessionPaymentMethodOptionsCardOptions Card { get; set; }
 
         /// <summary>
         /// contains details about the Cashapp Pay payment method options.
         /// </summary>
         [JsonProperty("cashapp")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cashapp")]
+#endif
         public SessionPaymentMethodOptionsCashappOptions Cashapp { get; set; }
 
         /// <summary>
         /// contains details about the Customer Balance payment method options.
         /// </summary>
         [JsonProperty("customer_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_balance")]
+#endif
         public SessionPaymentMethodOptionsCustomerBalanceOptions CustomerBalance { get; set; }
 
         /// <summary>
         /// contains details about the EPS payment method options.
         /// </summary>
         [JsonProperty("eps")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eps")]
+#endif
         public SessionPaymentMethodOptionsEpsOptions Eps { get; set; }
 
         /// <summary>
         /// contains details about the FPX payment method options.
         /// </summary>
         [JsonProperty("fpx")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fpx")]
+#endif
         public SessionPaymentMethodOptionsFpxOptions Fpx { get; set; }
 
         /// <summary>
         /// contains details about the Giropay payment method options.
         /// </summary>
         [JsonProperty("giropay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("giropay")]
+#endif
         public SessionPaymentMethodOptionsGiropayOptions Giropay { get; set; }
 
         /// <summary>
         /// contains details about the Grabpay payment method options.
         /// </summary>
         [JsonProperty("grabpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("grabpay")]
+#endif
         public SessionPaymentMethodOptionsGrabpayOptions Grabpay { get; set; }
 
         /// <summary>
         /// contains details about the Ideal payment method options.
         /// </summary>
         [JsonProperty("ideal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ideal")]
+#endif
         public SessionPaymentMethodOptionsIdealOptions Ideal { get; set; }
 
         /// <summary>
         /// contains details about the Kakao Pay payment method options.
         /// </summary>
         [JsonProperty("kakao_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kakao_pay")]
+#endif
         public SessionPaymentMethodOptionsKakaoPayOptions KakaoPay { get; set; }
 
         /// <summary>
         /// contains details about the Klarna payment method options.
         /// </summary>
         [JsonProperty("klarna")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("klarna")]
+#endif
         public SessionPaymentMethodOptionsKlarnaOptions Klarna { get; set; }
 
         /// <summary>
         /// contains details about the Konbini payment method options.
         /// </summary>
         [JsonProperty("konbini")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("konbini")]
+#endif
         public SessionPaymentMethodOptionsKonbiniOptions Konbini { get; set; }
 
         /// <summary>
         /// contains details about the Korean card payment method options.
         /// </summary>
         [JsonProperty("kr_card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kr_card")]
+#endif
         public SessionPaymentMethodOptionsKrCardOptions KrCard { get; set; }
 
         /// <summary>
         /// contains details about the Link payment method options.
         /// </summary>
         [JsonProperty("link")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("link")]
+#endif
         public SessionPaymentMethodOptionsLinkOptions Link { get; set; }
 
         /// <summary>
         /// contains details about the Mobilepay payment method options.
         /// </summary>
         [JsonProperty("mobilepay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mobilepay")]
+#endif
         public SessionPaymentMethodOptionsMobilepayOptions Mobilepay { get; set; }
 
         /// <summary>
         /// contains details about the Multibanco payment method options.
         /// </summary>
         [JsonProperty("multibanco")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("multibanco")]
+#endif
         public SessionPaymentMethodOptionsMultibancoOptions Multibanco { get; set; }
 
         /// <summary>
         /// contains details about the Naver Pay payment method options.
         /// </summary>
         [JsonProperty("naver_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("naver_pay")]
+#endif
         public SessionPaymentMethodOptionsNaverPayOptions NaverPay { get; set; }
 
         /// <summary>
         /// contains details about the OXXO payment method options.
         /// </summary>
         [JsonProperty("oxxo")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("oxxo")]
+#endif
         public SessionPaymentMethodOptionsOxxoOptions Oxxo { get; set; }
 
         /// <summary>
         /// contains details about the P24 payment method options.
         /// </summary>
         [JsonProperty("p24")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("p24")]
+#endif
         public SessionPaymentMethodOptionsP24Options P24 { get; set; }
 
         /// <summary>
         /// contains details about the Pay By Bank payment method options.
         /// </summary>
         [JsonProperty("pay_by_bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_by_bank")]
+#endif
         public SessionPaymentMethodOptionsPayByBankOptions PayByBank { get; set; }
 
         /// <summary>
         /// contains details about the PAYCO payment method options.
         /// </summary>
         [JsonProperty("payco")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payco")]
+#endif
         public SessionPaymentMethodOptionsPaycoOptions Payco { get; set; }
 
         /// <summary>
         /// contains details about the PayNow payment method options.
         /// </summary>
         [JsonProperty("paynow")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paynow")]
+#endif
         public SessionPaymentMethodOptionsPaynowOptions Paynow { get; set; }
 
         /// <summary>
         /// contains details about the PayPal payment method options.
         /// </summary>
         [JsonProperty("paypal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paypal")]
+#endif
         public SessionPaymentMethodOptionsPaypalOptions Paypal { get; set; }
 
         /// <summary>
         /// contains details about the Pix payment method options.
         /// </summary>
         [JsonProperty("pix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pix")]
+#endif
         public SessionPaymentMethodOptionsPixOptions Pix { get; set; }
 
         /// <summary>
         /// contains details about the RevolutPay payment method options.
         /// </summary>
         [JsonProperty("revolut_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("revolut_pay")]
+#endif
         public SessionPaymentMethodOptionsRevolutPayOptions RevolutPay { get; set; }
 
         /// <summary>
         /// contains details about the Samsung Pay payment method options.
         /// </summary>
         [JsonProperty("samsung_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("samsung_pay")]
+#endif
         public SessionPaymentMethodOptionsSamsungPayOptions SamsungPay { get; set; }
 
         /// <summary>
         /// contains details about the Sepa Debit payment method options.
         /// </summary>
         [JsonProperty("sepa_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_debit")]
+#endif
         public SessionPaymentMethodOptionsSepaDebitOptions SepaDebit { get; set; }
 
         /// <summary>
         /// contains details about the Sofort payment method options.
         /// </summary>
         [JsonProperty("sofort")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sofort")]
+#endif
         public SessionPaymentMethodOptionsSofortOptions Sofort { get; set; }
 
         /// <summary>
         /// contains details about the Swish payment method options.
         /// </summary>
         [JsonProperty("swish")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("swish")]
+#endif
         public SessionPaymentMethodOptionsSwishOptions Swish { get; set; }
 
         /// <summary>
         /// contains details about the Us Bank Account payment method options.
         /// </summary>
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public SessionPaymentMethodOptionsUsBankAccountOptions UsBankAccount { get; set; }
 
         /// <summary>
         /// contains details about the WeChat Pay payment method options.
         /// </summary>
         [JsonProperty("wechat_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wechat_pay")]
+#endif
         public SessionPaymentMethodOptionsWechatPayOptions WechatPay { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsOxxoOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsOxxoOptions.cs
index 3419f420ee..0a037842ce 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsOxxoOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsOxxoOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsOxxoOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class SessionPaymentMethodOptionsOxxoOptions : INestedOptions
         /// expire on Wednesday at 23:59 America/Mexico_City time.
         /// </summary>
         [JsonProperty("expires_after_days")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_after_days")]
+#endif
         public long? ExpiresAfterDays { get; set; }
 
         /// <summary>
@@ -34,6 +40,9 @@ public class SessionPaymentMethodOptionsOxxoOptions : INestedOptions
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsP24Options.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsP24Options.cs
index fc06213909..685386bcd0 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsP24Options.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsP24Options.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsP24Options : INestedOptions
     {
@@ -26,12 +29,18 @@ public class SessionPaymentMethodOptionsP24Options : INestedOptions
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
         /// Confirm that the payer has accepted the P24 terms and conditions.
         /// </summary>
         [JsonProperty("tos_shown_and_accepted")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tos_shown_and_accepted")]
+#endif
         public bool? TosShownAndAccepted { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsPaycoOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsPaycoOptions.cs
index 5164581d71..5f31bc1c8d 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsPaycoOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsPaycoOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsPaycoOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionPaymentMethodOptionsPaycoOptions : INestedOptions
         /// Controls when the funds will be captured from the customer's account.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsPaynowOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsPaynowOptions.cs
index 0d2afd5760..14ca9f0d89 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsPaynowOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsPaynowOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsPaynowOptions : INestedOptions
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsPaynowOptions : INestedOptions
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsPaypalOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsPaypalOptions.cs
index 637b613d75..bc250e0302 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsPaypalOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsPaypalOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsPaypalOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionPaymentMethodOptionsPaypalOptions : INestedOptions
         /// Controls when the funds will be captured from the customer's account.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class SessionPaymentMethodOptionsPaypalOptions : INestedOptions
         /// <c>pl-PL</c>, <c>pt-PT</c>, <c>sk-SK</c>, or <c>sv-SE</c>.
         /// </summary>
         [JsonProperty("preferred_locale")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_locale")]
+#endif
         public string PreferredLocale { get; set; }
 
         /// <summary>
@@ -28,12 +37,18 @@ public class SessionPaymentMethodOptionsPaypalOptions : INestedOptions
         /// settings to block multiple payments per invoice ID.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
         /// The risk correlation ID for an on-session payment using a saved PayPal payment method.
         /// </summary>
         [JsonProperty("risk_correlation_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("risk_correlation_id")]
+#endif
         public string RiskCorrelationId { get; set; }
 
         /// <summary>
@@ -62,6 +77,9 @@ public class SessionPaymentMethodOptionsPaypalOptions : INestedOptions
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsPixOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsPixOptions.cs
index 2e6b0f87fc..cd27203643 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsPixOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsPixOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsPixOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SessionPaymentMethodOptionsPixOptions : INestedOptions
         /// Defaults to 86400 seconds.
         /// </summary>
         [JsonProperty("expires_after_seconds")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_after_seconds")]
+#endif
         public long? ExpiresAfterSeconds { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsRevolutPayOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsRevolutPayOptions.cs
index eaa7a0b855..44d21d3db6 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsRevolutPayOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsRevolutPayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsRevolutPayOptions : INestedOptions
     {
@@ -27,6 +30,9 @@ public class SessionPaymentMethodOptionsRevolutPayOptions : INestedOptions
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsSamsungPayOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsSamsungPayOptions.cs
index 64ed560ac4..dfa9eff745 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsSamsungPayOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsSamsungPayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsSamsungPayOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionPaymentMethodOptionsSamsungPayOptions : INestedOptions
         /// Controls when the funds will be captured from the customer's account.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsSepaDebitMandateOptionsOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsSepaDebitMandateOptionsOptions.cs
index ef2d5df496..25fbc4010d 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsSepaDebitMandateOptionsOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsSepaDebitMandateOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsSepaDebitMandateOptionsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class SessionPaymentMethodOptionsSepaDebitMandateOptionsOptions : INested
         /// '/', '_', '-', '&amp;', '.'. Cannot begin with 'STRIPE'.
         /// </summary>
         [JsonProperty("reference_prefix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference_prefix")]
+#endif
         public string ReferencePrefix { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsSepaDebitOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsSepaDebitOptions.cs
index a9cb5fe5d8..882efdcf19 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsSepaDebitOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsSepaDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsSepaDebitOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionPaymentMethodOptionsSepaDebitOptions : INestedOptions
         /// Additional fields for Mandate creation.
         /// </summary>
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public SessionPaymentMethodOptionsSepaDebitMandateOptionsOptions MandateOptions { get; set; }
 
         /// <summary>
@@ -33,6 +39,9 @@ public class SessionPaymentMethodOptionsSepaDebitOptions : INestedOptions
         /// One of: <c>none</c>, <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
@@ -41,6 +50,9 @@ public class SessionPaymentMethodOptionsSepaDebitOptions : INestedOptions
         /// and 15 calendar days from now.
         /// </summary>
         [JsonProperty("target_date")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("target_date")]
+#endif
         public string TargetDate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsSofortOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsSofortOptions.cs
index f2b40b756b..366e17ed9f 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsSofortOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsSofortOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsSofortOptions : INestedOptions
     {
@@ -26,6 +29,9 @@ public class SessionPaymentMethodOptionsSofortOptions : INestedOptions
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsSwishOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsSwishOptions.cs
index 3051a0621a..d7a26c85d7 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsSwishOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsSwishOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsSwishOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SessionPaymentMethodOptionsSwishOptions : INestedOptions
         /// Defaults to the <c>id</c> of the Payment Intent.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions.cs
index ec240147c8..8a4669f35b 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Checkout
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions : INestedOptions
     {
@@ -14,6 +17,9 @@ public class SessionPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions
         /// <c>transactions</c>.
         /// </summary>
         [JsonProperty("permissions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("permissions")]
+#endif
         public List<string> Permissions { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class SessionPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions
         /// One of: <c>balances</c>, <c>ownership</c>, or <c>transactions</c>.
         /// </summary>
         [JsonProperty("prefetch")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("prefetch")]
+#endif
         public List<string> Prefetch { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsUsBankAccountOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsUsBankAccountOptions.cs
index f883fdecad..de9c42bc8a 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsUsBankAccountOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsUsBankAccountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsUsBankAccountOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionPaymentMethodOptionsUsBankAccountOptions : INestedOptions
         /// Additional fields for Financial Connections Session creation.
         /// </summary>
         [JsonProperty("financial_connections")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_connections")]
+#endif
         public SessionPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions FinancialConnections { get; set; }
 
         /// <summary>
@@ -33,6 +39,9 @@ public class SessionPaymentMethodOptionsUsBankAccountOptions : INestedOptions
         /// One of: <c>none</c>, <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
@@ -41,6 +50,9 @@ public class SessionPaymentMethodOptionsUsBankAccountOptions : INestedOptions
         /// and 15 calendar days from now.
         /// </summary>
         [JsonProperty("target_date")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("target_date")]
+#endif
         public string TargetDate { get; set; }
 
         /// <summary>
@@ -48,6 +60,9 @@ public class SessionPaymentMethodOptionsUsBankAccountOptions : INestedOptions
         /// One of: <c>automatic</c>, or <c>instant</c>.
         /// </summary>
         [JsonProperty("verification_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification_method")]
+#endif
         public string VerificationMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsWechatPayOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsWechatPayOptions.cs
index cd368191f1..633fced469 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsWechatPayOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPaymentMethodOptionsWechatPayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPaymentMethodOptionsWechatPayOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionPaymentMethodOptionsWechatPayOptions : INestedOptions
         /// The app ID registered with WeChat Pay. Only required when client is ios or android.
         /// </summary>
         [JsonProperty("app_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("app_id")]
+#endif
         public string AppId { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class SessionPaymentMethodOptionsWechatPayOptions : INestedOptions
         /// One of: <c>android</c>, <c>ios</c>, or <c>web</c>.
         /// </summary>
         [JsonProperty("client")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("client")]
+#endif
         public string Client { get; set; }
 
         /// <summary>
@@ -39,6 +48,9 @@ public class SessionPaymentMethodOptionsWechatPayOptions : INestedOptions
         /// href="https://stripe.com/strong-customer-authentication">SCA</a>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionPhoneNumberCollectionOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionPhoneNumberCollectionOptions.cs
index eca8ff7c73..ad0c35284d 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionPhoneNumberCollectionOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionPhoneNumberCollectionOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionPhoneNumberCollectionOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class SessionPhoneNumberCollectionOptions : INestedOptions
         /// Can only be set in <c>payment</c> and <c>subscription</c> mode.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionSavedPaymentMethodOptionsOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionSavedPaymentMethodOptionsOptions.cs
index faeaabb1ad..95689a4760 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionSavedPaymentMethodOptionsOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionSavedPaymentMethodOptionsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Checkout
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionSavedPaymentMethodOptionsOptions : INestedOptions
     {
@@ -13,6 +16,9 @@ public class SessionSavedPaymentMethodOptionsOptions : INestedOptions
         /// One of: <c>always</c>, <c>limited</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("allow_redisplay_filters")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allow_redisplay_filters")]
+#endif
         public List<string> AllowRedisplayFilters { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class SessionSavedPaymentMethodOptionsOptions : INestedOptions
         /// One of: <c>disabled</c>, or <c>enabled</c>.
         /// </summary>
         [JsonProperty("payment_method_save")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_save")]
+#endif
         public string PaymentMethodSave { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionService.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionService.cs
index 30f2a96442..c6603e8558 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionService.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Checkout
     using System.Threading;
     using System.Threading.Tasks;
 
-    public partial class SessionService : Service<Session>,
+    public partial class SessionService : Service,
         ICreatable<Session, SessionCreateOptions>,
         IListable<Session, SessionListOptions>,
         IRetrievable<Session, SessionGetOptions>,
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionSetupIntentDataOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionSetupIntentDataOptions.cs
index bc5767ccb4..c75fd508d3 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionSetupIntentDataOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionSetupIntentDataOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Checkout
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionSetupIntentDataOptions : INestedOptions, IHasMetadata
     {
@@ -10,6 +13,9 @@ public class SessionSetupIntentDataOptions : INestedOptions, IHasMetadata
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -19,12 +25,18 @@ public class SessionSetupIntentDataOptions : INestedOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The Stripe account for which the setup is intended.
         /// </summary>
         [JsonProperty("on_behalf_of")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+#endif
         public string OnBehalfOf { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionShippingAddressCollectionOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionShippingAddressCollectionOptions.cs
index 133368dde3..b0fa31c696 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionShippingAddressCollectionOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionShippingAddressCollectionOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Checkout
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionShippingAddressCollectionOptions : INestedOptions
     {
@@ -41,6 +44,9 @@ public class SessionShippingAddressCollectionOptions : INestedOptions
         /// <c>XK</c>, <c>YE</c>, <c>YT</c>, <c>ZA</c>, <c>ZM</c>, <c>ZW</c>, or <c>ZZ</c>.
         /// </summary>
         [JsonProperty("allowed_countries")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allowed_countries")]
+#endif
         public List<string> AllowedCountries { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionShippingOptionOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionShippingOptionOptions.cs
index 55aa569ec0..5b61091091 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionShippingOptionOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionShippingOptionOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionShippingOptionOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class SessionShippingOptionOptions : INestedOptions
         /// The ID of the Shipping Rate to use for this shipping option.
         /// </summary>
         [JsonProperty("shipping_rate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_rate")]
+#endif
         public string ShippingRate { get; set; }
 
         /// <summary>
         /// Parameters to be passed to Shipping Rate creation for this shipping option.
         /// </summary>
         [JsonProperty("shipping_rate_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_rate_data")]
+#endif
         public SessionShippingOptionShippingRateDataOptions ShippingRateData { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionShippingOptionShippingRateDataDeliveryEstimateMaximumOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionShippingOptionShippingRateDataDeliveryEstimateMaximumOptions.cs
index c901ebf8b0..0d26e73681 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionShippingOptionShippingRateDataDeliveryEstimateMaximumOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionShippingOptionShippingRateDataDeliveryEstimateMaximumOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionShippingOptionShippingRateDataDeliveryEstimateMaximumOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class SessionShippingOptionShippingRateDataDeliveryEstimateMaximumOptions
         /// One of: <c>business_day</c>, <c>day</c>, <c>hour</c>, <c>month</c>, or <c>week</c>.
         /// </summary>
         [JsonProperty("unit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit")]
+#endif
         public string Unit { get; set; }
 
         /// <summary>
         /// Must be greater than 0.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public long? Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionShippingOptionShippingRateDataDeliveryEstimateMinimumOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionShippingOptionShippingRateDataDeliveryEstimateMinimumOptions.cs
index f11f50b332..d2fe972e6e 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionShippingOptionShippingRateDataDeliveryEstimateMinimumOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionShippingOptionShippingRateDataDeliveryEstimateMinimumOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionShippingOptionShippingRateDataDeliveryEstimateMinimumOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class SessionShippingOptionShippingRateDataDeliveryEstimateMinimumOptions
         /// One of: <c>business_day</c>, <c>day</c>, <c>hour</c>, <c>month</c>, or <c>week</c>.
         /// </summary>
         [JsonProperty("unit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit")]
+#endif
         public string Unit { get; set; }
 
         /// <summary>
         /// Must be greater than 0.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public long? Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionShippingOptionShippingRateDataDeliveryEstimateOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionShippingOptionShippingRateDataDeliveryEstimateOptions.cs
index 174a365eee..977a165a32 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionShippingOptionShippingRateDataDeliveryEstimateOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionShippingOptionShippingRateDataDeliveryEstimateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionShippingOptionShippingRateDataDeliveryEstimateOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class SessionShippingOptionShippingRateDataDeliveryEstimateOptions : INes
         /// infinite.
         /// </summary>
         [JsonProperty("maximum")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("maximum")]
+#endif
         public SessionShippingOptionShippingRateDataDeliveryEstimateMaximumOptions Maximum { get; set; }
 
         /// <summary>
         /// The lower bound of the estimated range. If empty, represents no lower bound.
         /// </summary>
         [JsonProperty("minimum")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("minimum")]
+#endif
         public SessionShippingOptionShippingRateDataDeliveryEstimateMinimumOptions Minimum { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionShippingOptionShippingRateDataFixedAmountCurrencyOptionsOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionShippingOptionShippingRateDataFixedAmountCurrencyOptionsOptions.cs
index bb0f2d9264..aeba5d0562 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionShippingOptionShippingRateDataFixedAmountCurrencyOptionsOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionShippingOptionShippingRateDataFixedAmountCurrencyOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionShippingOptionShippingRateDataFixedAmountCurrencyOptionsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionShippingOptionShippingRateDataFixedAmountCurrencyOptionsOpti
         /// A non-negative integer in cents representing how much to charge.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class SessionShippingOptionShippingRateDataFixedAmountCurrencyOptionsOpti
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionShippingOptionShippingRateDataFixedAmountOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionShippingOptionShippingRateDataFixedAmountOptions.cs
index 8b90cf0bc6..ad9797fcdc 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionShippingOptionShippingRateDataFixedAmountOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionShippingOptionShippingRateDataFixedAmountOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Checkout
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionShippingOptionShippingRateDataFixedAmountOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SessionShippingOptionShippingRateDataFixedAmountOptions : INestedOp
         /// A non-negative integer in cents representing how much to charge.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class SessionShippingOptionShippingRateDataFixedAmountOptions : INestedOp
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class SessionShippingOptionShippingRateDataFixedAmountOptions : INestedOp
         /// code</a> and a <a href="https://stripe.com/docs/currencies">supported currency</a>.
         /// </summary>
         [JsonProperty("currency_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency_options")]
+#endif
         public Dictionary<string, SessionShippingOptionShippingRateDataFixedAmountCurrencyOptionsOptions> CurrencyOptions { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionShippingOptionShippingRateDataOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionShippingOptionShippingRateDataOptions.cs
index 8f2e6a133a..2087600ea1 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionShippingOptionShippingRateDataOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionShippingOptionShippingRateDataOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Checkout
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionShippingOptionShippingRateDataOptions : INestedOptions, IHasMetadata
     {
@@ -11,6 +14,9 @@ public class SessionShippingOptionShippingRateDataOptions : INestedOptions, IHas
         /// customer. This will appear on CheckoutSessions.
         /// </summary>
         [JsonProperty("delivery_estimate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("delivery_estimate")]
+#endif
         public SessionShippingOptionShippingRateDataDeliveryEstimateOptions DeliveryEstimate { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class SessionShippingOptionShippingRateDataOptions : INestedOptions, IHas
         /// on CheckoutSessions.
         /// </summary>
         [JsonProperty("display_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_name")]
+#endif
         public string DisplayName { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class SessionShippingOptionShippingRateDataOptions : INestedOptions, IHas
         /// <c>fixed_amount</c>.
         /// </summary>
         [JsonProperty("fixed_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amount")]
+#endif
         public SessionShippingOptionShippingRateDataFixedAmountOptions FixedAmount { get; set; }
 
         /// <summary>
@@ -34,6 +46,9 @@ public class SessionShippingOptionShippingRateDataOptions : INestedOptions, IHas
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -42,6 +57,9 @@ public class SessionShippingOptionShippingRateDataOptions : INestedOptions, IHas
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
@@ -49,12 +67,18 @@ public class SessionShippingOptionShippingRateDataOptions : INestedOptions, IHas
         /// code is <c>txcd_92010001</c>.
         /// </summary>
         [JsonProperty("tax_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_code")]
+#endif
         public string TaxCode { get; set; }
 
         /// <summary>
         /// The type of calculation to use on the shipping rate.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionSubscriptionDataInvoiceSettingsIssuerOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionSubscriptionDataInvoiceSettingsIssuerOptions.cs
index 35afdb0729..abd7f84016 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionSubscriptionDataInvoiceSettingsIssuerOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionSubscriptionDataInvoiceSettingsIssuerOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionSubscriptionDataInvoiceSettingsIssuerOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionSubscriptionDataInvoiceSettingsIssuerOptions : INestedOption
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public string Account { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class SessionSubscriptionDataInvoiceSettingsIssuerOptions : INestedOption
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionSubscriptionDataInvoiceSettingsOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionSubscriptionDataInvoiceSettingsOptions.cs
index 7e9c8c7b0d..3235f91da3 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionSubscriptionDataInvoiceSettingsOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionSubscriptionDataInvoiceSettingsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionSubscriptionDataInvoiceSettingsOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SessionSubscriptionDataInvoiceSettingsOptions : INestedOptions
         /// branding and support information of the specified account.
         /// </summary>
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public SessionSubscriptionDataInvoiceSettingsIssuerOptions Issuer { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionSubscriptionDataOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionSubscriptionDataOptions.cs
index a32bebec3f..1a440f826c 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionSubscriptionDataOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionSubscriptionDataOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe.Checkout
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionSubscriptionDataOptions : INestedOptions, IHasMetadata
     {
@@ -17,6 +20,9 @@ public class SessionSubscriptionDataOptions : INestedOptions, IHasMetadata
         /// href="https://stripe.com/docs/connect/subscriptions#collecting-fees-on-subscriptions">documentation</a>.
         /// </summary>
         [JsonProperty("application_fee_percent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_percent")]
+#endif
         public decimal? ApplicationFeePercent { get; set; }
 
         /// <summary>
@@ -24,6 +30,10 @@ public class SessionSubscriptionDataOptions : INestedOptions, IHasMetadata
         /// </summary>
         [JsonProperty("billing_cycle_anchor")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_cycle_anchor")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? BillingCycleAnchor { get; set; }
 
         /// <summary>
@@ -32,6 +42,9 @@ public class SessionSubscriptionDataOptions : INestedOptions, IHasMetadata
         /// populated from the subscription.
         /// </summary>
         [JsonProperty("default_tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_tax_rates")]
+#endif
         public List<string> DefaultTaxRates { get; set; }
 
         /// <summary>
@@ -40,12 +53,18 @@ public class SessionSubscriptionDataOptions : INestedOptions, IHasMetadata
         /// href="https://stripe.com/docs/customer-management">customer portal</a>.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// All invoices will be billed using the specified settings.
         /// </summary>
         [JsonProperty("invoice_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_settings")]
+#endif
         public SessionSubscriptionDataInvoiceSettingsOptions InvoiceSettings { get; set; }
 
         /// <summary>
@@ -55,12 +74,18 @@ public class SessionSubscriptionDataOptions : INestedOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The account on behalf of which to charge, for each of the subscription's invoices.
         /// </summary>
         [JsonProperty("on_behalf_of")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+#endif
         public string OnBehalfOf { get; set; }
 
         /// <summary>
@@ -69,6 +94,9 @@ public class SessionSubscriptionDataOptions : INestedOptions, IHasMetadata
         /// One of: <c>create_prorations</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("proration_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("proration_behavior")]
+#endif
         public string ProrationBehavior { get; set; }
 
         /// <summary>
@@ -77,6 +105,9 @@ public class SessionSubscriptionDataOptions : INestedOptions, IHasMetadata
         /// charges.
         /// </summary>
         [JsonProperty("transfer_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_data")]
+#endif
         public SessionSubscriptionDataTransferDataOptions TransferData { get; set; }
 
         /// <summary>
@@ -85,6 +116,10 @@ public class SessionSubscriptionDataOptions : INestedOptions, IHasMetadata
         /// </summary>
         [JsonProperty("trial_end")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_end")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? TrialEnd { get; set; }
 
         /// <summary>
@@ -92,12 +127,18 @@ public class SessionSubscriptionDataOptions : INestedOptions, IHasMetadata
         /// the first time. Has to be at least 1.
         /// </summary>
         [JsonProperty("trial_period_days")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_period_days")]
+#endif
         public long? TrialPeriodDays { get; set; }
 
         /// <summary>
         /// Settings related to subscription trials.
         /// </summary>
         [JsonProperty("trial_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_settings")]
+#endif
         public SessionSubscriptionDataTrialSettingsOptions TrialSettings { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionSubscriptionDataTransferDataOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionSubscriptionDataTransferDataOptions.cs
index f495c90533..df6274aeb3 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionSubscriptionDataTransferDataOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionSubscriptionDataTransferDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionSubscriptionDataTransferDataOptions : INestedOptions
     {
@@ -12,12 +15,18 @@ public class SessionSubscriptionDataTransferDataOptions : INestedOptions
         /// destination.
         /// </summary>
         [JsonProperty("amount_percent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_percent")]
+#endif
         public decimal? AmountPercent { get; set; }
 
         /// <summary>
         /// ID of an existing, connected Stripe account.
         /// </summary>
         [JsonProperty("destination")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination")]
+#endif
         public string Destination { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionSubscriptionDataTrialSettingsEndBehaviorOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionSubscriptionDataTrialSettingsEndBehaviorOptions.cs
index 94687d607b..0f0bffa9d0 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionSubscriptionDataTrialSettingsEndBehaviorOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionSubscriptionDataTrialSettingsEndBehaviorOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionSubscriptionDataTrialSettingsEndBehaviorOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class SessionSubscriptionDataTrialSettingsEndBehaviorOptions : INestedOpt
         /// One of: <c>cancel</c>, <c>create_invoice</c>, or <c>pause</c>.
         /// </summary>
         [JsonProperty("missing_payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("missing_payment_method")]
+#endif
         public string MissingPaymentMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionSubscriptionDataTrialSettingsOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionSubscriptionDataTrialSettingsOptions.cs
index f69b336b5d..bdd63d49ec 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionSubscriptionDataTrialSettingsOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionSubscriptionDataTrialSettingsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionSubscriptionDataTrialSettingsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionSubscriptionDataTrialSettingsOptions : INestedOptions
         /// Defines how the subscription should behave when the user's free trial ends.
         /// </summary>
         [JsonProperty("end_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end_behavior")]
+#endif
         public SessionSubscriptionDataTrialSettingsEndBehaviorOptions EndBehavior { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionTaxIdCollectionOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionTaxIdCollectionOptions.cs
index 73a037694e..ef27e41a4e 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionTaxIdCollectionOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionTaxIdCollectionOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Checkout
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionTaxIdCollectionOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SessionTaxIdCollectionOptions : INestedOptions
         /// Enable tax ID collection during checkout. Defaults to <c>false</c>.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class SessionTaxIdCollectionOptions : INestedOptions
         /// One of: <c>if_supported</c>, or <c>never</c>.
         /// </summary>
         [JsonProperty("required")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("required")]
+#endif
         public string Required { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Checkout/Sessions/SessionUpdateOptions.cs b/src/Stripe.net/Services/Checkout/Sessions/SessionUpdateOptions.cs
index da123270f8..54d8f0c9a4 100644
--- a/src/Stripe.net/Services/Checkout/Sessions/SessionUpdateOptions.cs
+++ b/src/Stripe.net/Services/Checkout/Sessions/SessionUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Checkout
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -10,6 +13,9 @@ public class SessionUpdateOptions : BaseOptions, IHasMetadata
         /// Information about the customer collected within the Checkout Session.
         /// </summary>
         [JsonProperty("collected_information")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("collected_information")]
+#endif
         public SessionCollectedInformationOptions CollectedInformation { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class SessionUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Climate/Orders/OrderBeneficiaryOptions.cs b/src/Stripe.net/Services/Climate/Orders/OrderBeneficiaryOptions.cs
index 078dbd985d..9ca0b93ff5 100644
--- a/src/Stripe.net/Services/Climate/Orders/OrderBeneficiaryOptions.cs
+++ b/src/Stripe.net/Services/Climate/Orders/OrderBeneficiaryOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Climate
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OrderBeneficiaryOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class OrderBeneficiaryOptions : INestedOptions
         /// Publicly displayable name for the end beneficiary of carbon removal.
         /// </summary>
         [JsonProperty("public_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("public_name")]
+#endif
         public string PublicName { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Climate/Orders/OrderCreateOptions.cs b/src/Stripe.net/Services/Climate/Orders/OrderCreateOptions.cs
index a02faa61c6..cf1c4e0b72 100644
--- a/src/Stripe.net/Services/Climate/Orders/OrderCreateOptions.cs
+++ b/src/Stripe.net/Services/Climate/Orders/OrderCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Climate
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OrderCreateOptions : BaseOptions, IHasMetadata
     {
@@ -11,6 +14,9 @@ public class OrderCreateOptions : BaseOptions, IHasMetadata
         /// specified.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class OrderCreateOptions : BaseOptions, IHasMetadata
         /// Stripe account if not set.
         /// </summary>
         [JsonProperty("beneficiary")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("beneficiary")]
+#endif
         public OrderBeneficiaryOptions Beneficiary { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class OrderCreateOptions : BaseOptions, IHasMetadata
         /// currency for your account</a>. If omitted, the account's default currency will be used.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -36,18 +48,27 @@ public class OrderCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Requested number of tons for the order. Either this or <c>amount</c> must be specified.
         /// </summary>
         [JsonProperty("metric_tons")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metric_tons")]
+#endif
         public decimal? MetricTons { get; set; }
 
         /// <summary>
         /// Unique identifier of the Climate product.
         /// </summary>
         [JsonProperty("product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product")]
+#endif
         public string Product { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Climate/Orders/OrderService.cs b/src/Stripe.net/Services/Climate/Orders/OrderService.cs
index e0a3632e81..0f41775b5e 100644
--- a/src/Stripe.net/Services/Climate/Orders/OrderService.cs
+++ b/src/Stripe.net/Services/Climate/Orders/OrderService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Climate
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class OrderService : Service<Order>,
+    public class OrderService : Service,
         ICreatable<Order, OrderCreateOptions>,
         IListable<Order, OrderListOptions>,
         IRetrievable<Order, OrderGetOptions>,
diff --git a/src/Stripe.net/Services/Climate/Orders/OrderUpdateOptions.cs b/src/Stripe.net/Services/Climate/Orders/OrderUpdateOptions.cs
index 118fcedcb0..9635747f4f 100644
--- a/src/Stripe.net/Services/Climate/Orders/OrderUpdateOptions.cs
+++ b/src/Stripe.net/Services/Climate/Orders/OrderUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Climate
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OrderUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -11,6 +14,9 @@ public class OrderUpdateOptions : BaseOptions, IHasMetadata
         /// Stripe account if not set.
         /// </summary>
         [JsonProperty("beneficiary")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("beneficiary")]
+#endif
         public OrderBeneficiaryOptions Beneficiary { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class OrderUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Climate/Products/ProductService.cs b/src/Stripe.net/Services/Climate/Products/ProductService.cs
index 0e037929ac..90f75f3203 100644
--- a/src/Stripe.net/Services/Climate/Products/ProductService.cs
+++ b/src/Stripe.net/Services/Climate/Products/ProductService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Climate
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class ProductService : Service<Product>,
+    public class ProductService : Service,
         IListable<Product, ProductListOptions>,
         IRetrievable<Product, ProductGetOptions>
     {
diff --git a/src/Stripe.net/Services/Climate/Suppliers/SupplierService.cs b/src/Stripe.net/Services/Climate/Suppliers/SupplierService.cs
index cdfdaed24f..102c0f402b 100644
--- a/src/Stripe.net/Services/Climate/Suppliers/SupplierService.cs
+++ b/src/Stripe.net/Services/Climate/Suppliers/SupplierService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Climate
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class SupplierService : Service<Supplier>,
+    public class SupplierService : Service,
         IListable<Supplier, SupplierListOptions>,
         IRetrievable<Supplier, SupplierGetOptions>
     {
diff --git a/src/Stripe.net/Services/ConfirmationTokens/ConfirmationTokenService.cs b/src/Stripe.net/Services/ConfirmationTokens/ConfirmationTokenService.cs
index 320a4ddbd7..21c990844e 100644
--- a/src/Stripe.net/Services/ConfirmationTokens/ConfirmationTokenService.cs
+++ b/src/Stripe.net/Services/ConfirmationTokens/ConfirmationTokenService.cs
@@ -7,7 +7,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class ConfirmationTokenService : Service<ConfirmationToken>,
+    public class ConfirmationTokenService : Service,
         IRetrievable<ConfirmationToken, ConfirmationTokenGetOptions>
     {
         public ConfirmationTokenService()
diff --git a/src/Stripe.net/Services/CountrySpecs/CountrySpecService.cs b/src/Stripe.net/Services/CountrySpecs/CountrySpecService.cs
index f43e3d12ef..1e2775f34c 100644
--- a/src/Stripe.net/Services/CountrySpecs/CountrySpecService.cs
+++ b/src/Stripe.net/Services/CountrySpecs/CountrySpecService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class CountrySpecService : Service<CountrySpec>,
+    public class CountrySpecService : Service,
         IListable<CountrySpec, CountrySpecListOptions>,
         IRetrievable<CountrySpec, CountrySpecGetOptions>
     {
diff --git a/src/Stripe.net/Services/Coupons/CouponAppliesToOptions.cs b/src/Stripe.net/Services/Coupons/CouponAppliesToOptions.cs
index 1d5a200a4c..bde013ea6a 100644
--- a/src/Stripe.net/Services/Coupons/CouponAppliesToOptions.cs
+++ b/src/Stripe.net/Services/Coupons/CouponAppliesToOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CouponAppliesToOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class CouponAppliesToOptions : INestedOptions
         /// An array of Product IDs that this Coupon will apply to.
         /// </summary>
         [JsonProperty("products")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("products")]
+#endif
         public List<string> Products { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Coupons/CouponCreateOptions.cs b/src/Stripe.net/Services/Coupons/CouponCreateOptions.cs
index ae552b6d63..6f7e042ecb 100644
--- a/src/Stripe.net/Services/Coupons/CouponCreateOptions.cs
+++ b/src/Stripe.net/Services/Coupons/CouponCreateOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CouponCreateOptions : BaseOptions, IHasId, IHasMetadata
     {
@@ -13,12 +16,18 @@ public class CouponCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// if <c>percent_off</c> is not passed).
         /// </summary>
         [JsonProperty("amount_off")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_off")]
+#endif
         public long? AmountOff { get; set; }
 
         /// <summary>
         /// A hash containing directions for what this Coupon will apply discounts to.
         /// </summary>
         [JsonProperty("applies_to")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("applies_to")]
+#endif
         public CouponAppliesToOptions AppliesTo { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class CouponCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// of the <c>amount_off</c> parameter (required if <c>amount_off</c> is passed).
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -35,6 +47,9 @@ public class CouponCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// href="https://stripe.com/docs/currencies">supported currency</a>.
         /// </summary>
         [JsonProperty("currency_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency_options")]
+#endif
         public Dictionary<string, CouponCurrencyOptionsOptions> CurrencyOptions { get; set; }
 
         /// <summary>
@@ -43,6 +58,9 @@ public class CouponCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// One of: <c>forever</c>, <c>once</c>, or <c>repeating</c>.
         /// </summary>
         [JsonProperty("duration")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("duration")]
+#endif
         public string Duration { get; set; }
 
         /// <summary>
@@ -50,6 +68,9 @@ public class CouponCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// positive integer that specifies the number of months the discount will be in effect.
         /// </summary>
         [JsonProperty("duration_in_months")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("duration_in_months")]
+#endif
         public long? DurationInMonths { get; set; }
 
         /// <summary>
@@ -58,6 +79,9 @@ public class CouponCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// blank and we'll generate a random code for you.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
@@ -66,6 +90,9 @@ public class CouponCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// of your blog can use.
         /// </summary>
         [JsonProperty("max_redemptions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("max_redemptions")]
+#endif
         public long? MaxRedemptions { get; set; }
 
         /// <summary>
@@ -75,6 +102,9 @@ public class CouponCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -82,6 +112,9 @@ public class CouponCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// default the <c>id</c> is shown if <c>name</c> is not set.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -89,6 +122,9 @@ public class CouponCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// discount the coupon will apply (required if <c>amount_off</c> is not passed).
         /// </summary>
         [JsonProperty("percent_off")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percent_off")]
+#endif
         public decimal? PercentOff { get; set; }
 
         /// <summary>
@@ -97,6 +133,10 @@ public class CouponCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// </summary>
         [JsonProperty("redeem_by")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("redeem_by")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? RedeemBy { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Coupons/CouponCurrencyOptionsOptions.cs b/src/Stripe.net/Services/Coupons/CouponCurrencyOptionsOptions.cs
index 78ac53a2e7..c83dd57218 100644
--- a/src/Stripe.net/Services/Coupons/CouponCurrencyOptionsOptions.cs
+++ b/src/Stripe.net/Services/Coupons/CouponCurrencyOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CouponCurrencyOptionsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class CouponCurrencyOptionsOptions : INestedOptions
         /// A positive integer representing the amount to subtract from an invoice total.
         /// </summary>
         [JsonProperty("amount_off")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_off")]
+#endif
         public long? AmountOff { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Coupons/CouponService.cs b/src/Stripe.net/Services/Coupons/CouponService.cs
index 7ac08d2ba1..c4e35f1889 100644
--- a/src/Stripe.net/Services/Coupons/CouponService.cs
+++ b/src/Stripe.net/Services/Coupons/CouponService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class CouponService : Service<Coupon>,
+    public class CouponService : Service,
         ICreatable<Coupon, CouponCreateOptions>,
         IDeletable<Coupon, CouponDeleteOptions>,
         IListable<Coupon, CouponListOptions>,
diff --git a/src/Stripe.net/Services/Coupons/CouponUpdateOptions.cs b/src/Stripe.net/Services/Coupons/CouponUpdateOptions.cs
index 972c14a205..8b1105a80c 100644
--- a/src/Stripe.net/Services/Coupons/CouponUpdateOptions.cs
+++ b/src/Stripe.net/Services/Coupons/CouponUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CouponUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -13,6 +16,9 @@ public class CouponUpdateOptions : BaseOptions, IHasMetadata
         /// href="https://stripe.com/docs/currencies">supported currency</a>.
         /// </summary>
         [JsonProperty("currency_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency_options")]
+#endif
         public Dictionary<string, CouponCurrencyOptionsOptions> CurrencyOptions { get; set; }
 
         /// <summary>
@@ -22,6 +28,9 @@ public class CouponUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -29,6 +38,9 @@ public class CouponUpdateOptions : BaseOptions, IHasMetadata
         /// default the <c>id</c> is shown if <c>name</c> is not set.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CreditNotePreviewLines/CreditNotePreviewLinesLineOptions.cs b/src/Stripe.net/Services/CreditNotePreviewLines/CreditNotePreviewLinesLineOptions.cs
index cfcaa31067..06e59f7cdc 100644
--- a/src/Stripe.net/Services/CreditNotePreviewLines/CreditNotePreviewLinesLineOptions.cs
+++ b/src/Stripe.net/Services/CreditNotePreviewLines/CreditNotePreviewLinesLineOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditNotePreviewLinesLineOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class CreditNotePreviewLinesLineOptions : INestedOptions
         /// exclusive.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class CreditNotePreviewLinesLineOptions : INestedOptions
         /// <c>custom_line_item</c>.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -26,12 +35,18 @@ public class CreditNotePreviewLinesLineOptions : INestedOptions
         /// <c>invoice_line_item</c>.
         /// </summary>
         [JsonProperty("invoice_line_item")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_line_item")]
+#endif
         public string InvoiceLineItem { get; set; }
 
         /// <summary>
         /// The line item quantity to credit.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         /// <summary>
@@ -39,6 +54,9 @@ public class CreditNotePreviewLinesLineOptions : INestedOptions
         /// <c>tax_rates</c>.
         /// </summary>
         [JsonProperty("tax_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_amounts")]
+#endif
         public List<CreditNotePreviewLinesLineTaxAmountOptions> TaxAmounts { get; set; }
 
         /// <summary>
@@ -46,6 +64,9 @@ public class CreditNotePreviewLinesLineOptions : INestedOptions
         /// is <c>custom_line_item</c> and cannot be mixed with <c>tax_amounts</c>.
         /// </summary>
         [JsonProperty("tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rates")]
+#endif
         public List<string> TaxRates { get; set; }
 
         /// <summary>
@@ -54,6 +75,9 @@ public class CreditNotePreviewLinesLineOptions : INestedOptions
         /// One of: <c>custom_line_item</c>, or <c>invoice_line_item</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
@@ -62,6 +86,9 @@ public class CreditNotePreviewLinesLineOptions : INestedOptions
         /// credit for this line item. Only valid when <c>type</c> is <c>custom_line_item</c>.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
@@ -70,6 +97,9 @@ public class CreditNotePreviewLinesLineOptions : INestedOptions
         /// <c>unit_amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CreditNotePreviewLines/CreditNotePreviewLinesLineTaxAmountOptions.cs b/src/Stripe.net/Services/CreditNotePreviewLines/CreditNotePreviewLinesLineTaxAmountOptions.cs
index 16f5395f9c..478d9f747c 100644
--- a/src/Stripe.net/Services/CreditNotePreviewLines/CreditNotePreviewLinesLineTaxAmountOptions.cs
+++ b/src/Stripe.net/Services/CreditNotePreviewLines/CreditNotePreviewLinesLineTaxAmountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditNotePreviewLinesLineTaxAmountOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class CreditNotePreviewLinesLineTaxAmountOptions : INestedOptions
         /// The amount, in cents (or local equivalent), of the tax.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -16,12 +22,18 @@ public class CreditNotePreviewLinesLineTaxAmountOptions : INestedOptions
         /// created by Stripe.
         /// </summary>
         [JsonProperty("tax_rate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rate")]
+#endif
         public string TaxRate { get; set; }
 
         /// <summary>
         /// The amount on which tax is calculated, in cents (or local equivalent).
         /// </summary>
         [JsonProperty("taxable_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxable_amount")]
+#endif
         public long? TaxableAmount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CreditNotePreviewLines/CreditNotePreviewLinesListOptions.cs b/src/Stripe.net/Services/CreditNotePreviewLines/CreditNotePreviewLinesListOptions.cs
index 088c838ef2..e789882a57 100644
--- a/src/Stripe.net/Services/CreditNotePreviewLines/CreditNotePreviewLinesListOptions.cs
+++ b/src/Stripe.net/Services/CreditNotePreviewLines/CreditNotePreviewLinesListOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditNotePreviewLinesListOptions : ListOptions, IHasMetadata
     {
@@ -13,6 +16,9 @@ public class CreditNotePreviewLinesListOptions : ListOptions, IHasMetadata
         /// credit note.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class CreditNotePreviewLinesListOptions : ListOptions, IHasMetadata
         /// customer's balance, which will be automatically applied to their next invoice.
         /// </summary>
         [JsonProperty("credit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("credit_amount")]
+#endif
         public long? CreditAmount { get; set; }
 
         /// <summary>
@@ -29,6 +38,10 @@ public class CreditNotePreviewLinesListOptions : ListOptions, IHasMetadata
         /// </summary>
         [JsonProperty("effective_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("effective_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? EffectiveAt { get; set; }
 
         /// <summary>
@@ -37,24 +50,36 @@ public class CreditNotePreviewLinesListOptions : ListOptions, IHasMetadata
         /// One of: <c>credit_note</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("email_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email_type")]
+#endif
         public string EmailType { get; set; }
 
         /// <summary>
         /// ID of the invoice.
         /// </summary>
         [JsonProperty("invoice")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice")]
+#endif
         public string Invoice { get; set; }
 
         /// <summary>
         /// Line items that make up the credit note.
         /// </summary>
         [JsonProperty("lines")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lines")]
+#endif
         public List<CreditNotePreviewLinesLineOptions> Lines { get; set; }
 
         /// <summary>
         /// The credit note's memo appears on the credit note PDF.
         /// </summary>
         [JsonProperty("memo")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("memo")]
+#endif
         public string Memo { get; set; }
 
         /// <summary>
@@ -64,6 +89,9 @@ public class CreditNotePreviewLinesListOptions : ListOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -71,6 +99,9 @@ public class CreditNotePreviewLinesListOptions : ListOptions, IHasMetadata
         /// credited outside of Stripe.
         /// </summary>
         [JsonProperty("out_of_band_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("out_of_band_amount")]
+#endif
         public long? OutOfBandAmount { get; set; }
 
         /// <summary>
@@ -80,12 +111,18 @@ public class CreditNotePreviewLinesListOptions : ListOptions, IHasMetadata
         /// <c>product_unsatisfactory</c>.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
 
         /// <summary>
         /// ID of an existing refund to link this credit note to.
         /// </summary>
         [JsonProperty("refund")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund")]
+#endif
         public string Refund { get; set; }
 
         /// <summary>
@@ -93,6 +130,9 @@ public class CreditNotePreviewLinesListOptions : ListOptions, IHasMetadata
         /// set, a refund will be created for the charge associated with the invoice.
         /// </summary>
         [JsonProperty("refund_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_amount")]
+#endif
         public long? RefundAmount { get; set; }
 
         /// <summary>
@@ -100,6 +140,9 @@ public class CreditNotePreviewLinesListOptions : ListOptions, IHasMetadata
         /// included in the credit note.
         /// </summary>
         [JsonProperty("shipping_cost")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_cost")]
+#endif
         public CreditNotePreviewLinesShippingCostOptions ShippingCost { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CreditNotePreviewLines/CreditNotePreviewLinesService.cs b/src/Stripe.net/Services/CreditNotePreviewLines/CreditNotePreviewLinesService.cs
index ad9234d450..a9a04321c2 100644
--- a/src/Stripe.net/Services/CreditNotePreviewLines/CreditNotePreviewLinesService.cs
+++ b/src/Stripe.net/Services/CreditNotePreviewLines/CreditNotePreviewLinesService.cs
@@ -7,7 +7,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class CreditNotePreviewLinesService : ServiceNested<CreditNoteLineItem>
+    public class CreditNotePreviewLinesService : Service
     {
         public CreditNotePreviewLinesService()
         {
diff --git a/src/Stripe.net/Services/CreditNotePreviewLines/CreditNotePreviewLinesShippingCostOptions.cs b/src/Stripe.net/Services/CreditNotePreviewLines/CreditNotePreviewLinesShippingCostOptions.cs
index 29b24d1dfd..26dc927be7 100644
--- a/src/Stripe.net/Services/CreditNotePreviewLines/CreditNotePreviewLinesShippingCostOptions.cs
+++ b/src/Stripe.net/Services/CreditNotePreviewLines/CreditNotePreviewLinesShippingCostOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditNotePreviewLinesShippingCostOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class CreditNotePreviewLinesShippingCostOptions : INestedOptions
         /// The ID of the shipping rate to use for this order.
         /// </summary>
         [JsonProperty("shipping_rate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_rate")]
+#endif
         public string ShippingRate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CreditNotes/CreditNoteCreateOptions.cs b/src/Stripe.net/Services/CreditNotes/CreditNoteCreateOptions.cs
index 1cf46d060f..4f1145bfea 100644
--- a/src/Stripe.net/Services/CreditNotes/CreditNoteCreateOptions.cs
+++ b/src/Stripe.net/Services/CreditNotes/CreditNoteCreateOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditNoteCreateOptions : BaseOptions, IHasMetadata
     {
@@ -13,6 +16,9 @@ public class CreditNoteCreateOptions : BaseOptions, IHasMetadata
         /// credit note.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class CreditNoteCreateOptions : BaseOptions, IHasMetadata
         /// customer's balance, which will be automatically applied to their next invoice.
         /// </summary>
         [JsonProperty("credit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("credit_amount")]
+#endif
         public long? CreditAmount { get; set; }
 
         /// <summary>
@@ -29,6 +38,10 @@ public class CreditNoteCreateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("effective_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("effective_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? EffectiveAt { get; set; }
 
         /// <summary>
@@ -37,24 +50,36 @@ public class CreditNoteCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>credit_note</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("email_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email_type")]
+#endif
         public string EmailType { get; set; }
 
         /// <summary>
         /// ID of the invoice.
         /// </summary>
         [JsonProperty("invoice")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice")]
+#endif
         public string Invoice { get; set; }
 
         /// <summary>
         /// Line items that make up the credit note.
         /// </summary>
         [JsonProperty("lines")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lines")]
+#endif
         public List<CreditNoteLineOptions> Lines { get; set; }
 
         /// <summary>
         /// The credit note's memo appears on the credit note PDF.
         /// </summary>
         [JsonProperty("memo")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("memo")]
+#endif
         public string Memo { get; set; }
 
         /// <summary>
@@ -64,6 +89,9 @@ public class CreditNoteCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -71,6 +99,9 @@ public class CreditNoteCreateOptions : BaseOptions, IHasMetadata
         /// credited outside of Stripe.
         /// </summary>
         [JsonProperty("out_of_band_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("out_of_band_amount")]
+#endif
         public long? OutOfBandAmount { get; set; }
 
         /// <summary>
@@ -80,12 +111,18 @@ public class CreditNoteCreateOptions : BaseOptions, IHasMetadata
         /// <c>product_unsatisfactory</c>.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
 
         /// <summary>
         /// ID of an existing refund to link this credit note to.
         /// </summary>
         [JsonProperty("refund")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund")]
+#endif
         public string Refund { get; set; }
 
         /// <summary>
@@ -93,6 +130,9 @@ public class CreditNoteCreateOptions : BaseOptions, IHasMetadata
         /// set, a refund will be created for the charge associated with the invoice.
         /// </summary>
         [JsonProperty("refund_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_amount")]
+#endif
         public long? RefundAmount { get; set; }
 
         /// <summary>
@@ -100,6 +140,9 @@ public class CreditNoteCreateOptions : BaseOptions, IHasMetadata
         /// included in the credit note.
         /// </summary>
         [JsonProperty("shipping_cost")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_cost")]
+#endif
         public CreditNoteShippingCostOptions ShippingCost { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CreditNotes/CreditNoteLineOptions.cs b/src/Stripe.net/Services/CreditNotes/CreditNoteLineOptions.cs
index 280d105a04..8c7c6d3d98 100644
--- a/src/Stripe.net/Services/CreditNotes/CreditNoteLineOptions.cs
+++ b/src/Stripe.net/Services/CreditNotes/CreditNoteLineOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditNoteLineOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class CreditNoteLineOptions : INestedOptions
         /// exclusive.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class CreditNoteLineOptions : INestedOptions
         /// <c>custom_line_item</c>.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -26,12 +35,18 @@ public class CreditNoteLineOptions : INestedOptions
         /// <c>invoice_line_item</c>.
         /// </summary>
         [JsonProperty("invoice_line_item")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_line_item")]
+#endif
         public string InvoiceLineItem { get; set; }
 
         /// <summary>
         /// The line item quantity to credit.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         /// <summary>
@@ -39,6 +54,9 @@ public class CreditNoteLineOptions : INestedOptions
         /// <c>tax_rates</c>.
         /// </summary>
         [JsonProperty("tax_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_amounts")]
+#endif
         public List<CreditNoteLineTaxAmountOptions> TaxAmounts { get; set; }
 
         /// <summary>
@@ -46,6 +64,9 @@ public class CreditNoteLineOptions : INestedOptions
         /// is <c>custom_line_item</c> and cannot be mixed with <c>tax_amounts</c>.
         /// </summary>
         [JsonProperty("tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rates")]
+#endif
         public List<string> TaxRates { get; set; }
 
         /// <summary>
@@ -54,6 +75,9 @@ public class CreditNoteLineOptions : INestedOptions
         /// One of: <c>custom_line_item</c>, or <c>invoice_line_item</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
@@ -62,6 +86,9 @@ public class CreditNoteLineOptions : INestedOptions
         /// credit for this line item. Only valid when <c>type</c> is <c>custom_line_item</c>.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
@@ -70,6 +97,9 @@ public class CreditNoteLineOptions : INestedOptions
         /// <c>unit_amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CreditNotes/CreditNoteLineTaxAmountOptions.cs b/src/Stripe.net/Services/CreditNotes/CreditNoteLineTaxAmountOptions.cs
index 3cef18cde0..0d9d3e45a3 100644
--- a/src/Stripe.net/Services/CreditNotes/CreditNoteLineTaxAmountOptions.cs
+++ b/src/Stripe.net/Services/CreditNotes/CreditNoteLineTaxAmountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditNoteLineTaxAmountOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class CreditNoteLineTaxAmountOptions : INestedOptions
         /// The amount, in cents (or local equivalent), of the tax.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -16,12 +22,18 @@ public class CreditNoteLineTaxAmountOptions : INestedOptions
         /// created by Stripe.
         /// </summary>
         [JsonProperty("tax_rate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rate")]
+#endif
         public string TaxRate { get; set; }
 
         /// <summary>
         /// The amount on which tax is calculated, in cents (or local equivalent).
         /// </summary>
         [JsonProperty("taxable_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxable_amount")]
+#endif
         public long? TaxableAmount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CreditNotes/CreditNoteListOptions.cs b/src/Stripe.net/Services/CreditNotes/CreditNoteListOptions.cs
index e294cdbce6..aa337ca70a 100644
--- a/src/Stripe.net/Services/CreditNotes/CreditNoteListOptions.cs
+++ b/src/Stripe.net/Services/CreditNotes/CreditNoteListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditNoteListOptions : ListOptionsWithCreated
     {
@@ -9,12 +12,18 @@ public class CreditNoteListOptions : ListOptionsWithCreated
         /// Only return credit notes for the customer specified by this customer ID.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
         /// Only return credit notes for the invoice specified by this invoice ID.
         /// </summary>
         [JsonProperty("invoice")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice")]
+#endif
         public string Invoice { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CreditNotes/CreditNoteListPreviewLineItemsOptions.cs b/src/Stripe.net/Services/CreditNotes/CreditNoteListPreviewLineItemsOptions.cs
index 29324c265c..6923fc8751 100644
--- a/src/Stripe.net/Services/CreditNotes/CreditNoteListPreviewLineItemsOptions.cs
+++ b/src/Stripe.net/Services/CreditNotes/CreditNoteListPreviewLineItemsOptions.cs
@@ -3,35 +3,66 @@ namespace Stripe
     using System;
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
+
     using Stripe.Infrastructure;
 
     public class CreditNoteListPreviewLineItemsOptions : ListOptions, IHasMetadata
     {
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         [JsonProperty("credit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("credit_amount")]
+#endif
         public long? CreditAmount { get; set; }
 
         [JsonProperty("invoice")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice")]
+#endif
         public string Invoice { get; set; }
 
         [JsonProperty("memo")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("memo")]
+#endif
         public string Memo { get; set; }
 
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         [JsonProperty("out_of_band_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("out_of_band_amount")]
+#endif
         public long? OutOfBandAmount { get; set; }
 
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
 
         [JsonProperty("refund")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund")]
+#endif
         public string Refund { get; set; }
 
         [JsonProperty("refund_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_amount")]
+#endif
         public long? RefundAmount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CreditNotes/CreditNotePreviewOptions.cs b/src/Stripe.net/Services/CreditNotes/CreditNotePreviewOptions.cs
index f9f79aaf51..39e6732e24 100644
--- a/src/Stripe.net/Services/CreditNotes/CreditNotePreviewOptions.cs
+++ b/src/Stripe.net/Services/CreditNotes/CreditNotePreviewOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditNotePreviewOptions : BaseOptions, IHasMetadata
     {
@@ -13,6 +16,9 @@ public class CreditNotePreviewOptions : BaseOptions, IHasMetadata
         /// credit note.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class CreditNotePreviewOptions : BaseOptions, IHasMetadata
         /// customer's balance, which will be automatically applied to their next invoice.
         /// </summary>
         [JsonProperty("credit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("credit_amount")]
+#endif
         public long? CreditAmount { get; set; }
 
         /// <summary>
@@ -29,6 +38,10 @@ public class CreditNotePreviewOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("effective_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("effective_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? EffectiveAt { get; set; }
 
         /// <summary>
@@ -37,24 +50,36 @@ public class CreditNotePreviewOptions : BaseOptions, IHasMetadata
         /// One of: <c>credit_note</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("email_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email_type")]
+#endif
         public string EmailType { get; set; }
 
         /// <summary>
         /// ID of the invoice.
         /// </summary>
         [JsonProperty("invoice")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice")]
+#endif
         public string Invoice { get; set; }
 
         /// <summary>
         /// Line items that make up the credit note.
         /// </summary>
         [JsonProperty("lines")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lines")]
+#endif
         public List<CreditNoteLineOptions> Lines { get; set; }
 
         /// <summary>
         /// The credit note's memo appears on the credit note PDF.
         /// </summary>
         [JsonProperty("memo")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("memo")]
+#endif
         public string Memo { get; set; }
 
         /// <summary>
@@ -64,6 +89,9 @@ public class CreditNotePreviewOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -71,6 +99,9 @@ public class CreditNotePreviewOptions : BaseOptions, IHasMetadata
         /// credited outside of Stripe.
         /// </summary>
         [JsonProperty("out_of_band_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("out_of_band_amount")]
+#endif
         public long? OutOfBandAmount { get; set; }
 
         /// <summary>
@@ -80,12 +111,18 @@ public class CreditNotePreviewOptions : BaseOptions, IHasMetadata
         /// <c>product_unsatisfactory</c>.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
 
         /// <summary>
         /// ID of an existing refund to link this credit note to.
         /// </summary>
         [JsonProperty("refund")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund")]
+#endif
         public string Refund { get; set; }
 
         /// <summary>
@@ -93,6 +130,9 @@ public class CreditNotePreviewOptions : BaseOptions, IHasMetadata
         /// set, a refund will be created for the charge associated with the invoice.
         /// </summary>
         [JsonProperty("refund_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_amount")]
+#endif
         public long? RefundAmount { get; set; }
 
         /// <summary>
@@ -100,6 +140,9 @@ public class CreditNotePreviewOptions : BaseOptions, IHasMetadata
         /// included in the credit note.
         /// </summary>
         [JsonProperty("shipping_cost")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_cost")]
+#endif
         public CreditNoteShippingCostOptions ShippingCost { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CreditNotes/CreditNoteShippingCostOptions.cs b/src/Stripe.net/Services/CreditNotes/CreditNoteShippingCostOptions.cs
index c43fd8612f..5861cfffed 100644
--- a/src/Stripe.net/Services/CreditNotes/CreditNoteShippingCostOptions.cs
+++ b/src/Stripe.net/Services/CreditNotes/CreditNoteShippingCostOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditNoteShippingCostOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class CreditNoteShippingCostOptions : INestedOptions
         /// The ID of the shipping rate to use for this order.
         /// </summary>
         [JsonProperty("shipping_rate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_rate")]
+#endif
         public string ShippingRate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CreditNotes/CreditNoteUpdateOptions.cs b/src/Stripe.net/Services/CreditNotes/CreditNoteUpdateOptions.cs
index 72e782e3b9..24caabd151 100644
--- a/src/Stripe.net/Services/CreditNotes/CreditNoteUpdateOptions.cs
+++ b/src/Stripe.net/Services/CreditNotes/CreditNoteUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditNoteUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -10,6 +13,9 @@ public class CreditNoteUpdateOptions : BaseOptions, IHasMetadata
         /// Credit note memo.
         /// </summary>
         [JsonProperty("memo")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("memo")]
+#endif
         public string Memo { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class CreditNoteUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CustomerBalanceTransactions/CustomerBalanceTransactionCreateOptions.cs b/src/Stripe.net/Services/CustomerBalanceTransactions/CustomerBalanceTransactionCreateOptions.cs
index 4c43ebf25e..0980b65f80 100644
--- a/src/Stripe.net/Services/CustomerBalanceTransactions/CustomerBalanceTransactionCreateOptions.cs
+++ b/src/Stripe.net/Services/CustomerBalanceTransactions/CustomerBalanceTransactionCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerBalanceTransactionCreateOptions : BaseOptions, IHasMetadata
     {
@@ -11,6 +14,9 @@ public class CustomerBalanceTransactionCreateOptions : BaseOptions, IHasMetadata
         /// customer's credit balance.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -22,12 +28,18 @@ public class CustomerBalanceTransactionCreateOptions : BaseOptions, IHasMetadata
         /// will be updated to this value.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -37,6 +49,9 @@ public class CustomerBalanceTransactionCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CustomerBalanceTransactions/CustomerBalanceTransactionService.cs b/src/Stripe.net/Services/CustomerBalanceTransactions/CustomerBalanceTransactionService.cs
index 84c7bf6cda..a3f939884a 100644
--- a/src/Stripe.net/Services/CustomerBalanceTransactions/CustomerBalanceTransactionService.cs
+++ b/src/Stripe.net/Services/CustomerBalanceTransactions/CustomerBalanceTransactionService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class CustomerBalanceTransactionService : ServiceNested<CustomerBalanceTransaction>,
+    public class CustomerBalanceTransactionService : Service,
         INestedCreatable<CustomerBalanceTransaction, CustomerBalanceTransactionCreateOptions>,
         INestedListable<CustomerBalanceTransaction, CustomerBalanceTransactionListOptions>,
         INestedRetrievable<CustomerBalanceTransaction, CustomerBalanceTransactionGetOptions>,
diff --git a/src/Stripe.net/Services/CustomerBalanceTransactions/CustomerBalanceTransactionUpdateOptions.cs b/src/Stripe.net/Services/CustomerBalanceTransactions/CustomerBalanceTransactionUpdateOptions.cs
index f90f8adee3..fbc5e7f5ed 100644
--- a/src/Stripe.net/Services/CustomerBalanceTransactions/CustomerBalanceTransactionUpdateOptions.cs
+++ b/src/Stripe.net/Services/CustomerBalanceTransactions/CustomerBalanceTransactionUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerBalanceTransactionUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -10,6 +13,9 @@ public class CustomerBalanceTransactionUpdateOptions : BaseOptions, IHasMetadata
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class CustomerBalanceTransactionUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionService.cs b/src/Stripe.net/Services/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionService.cs
index 4c32883da9..d32477971c 100644
--- a/src/Stripe.net/Services/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionService.cs
+++ b/src/Stripe.net/Services/CustomerCashBalanceTransactions/CustomerCashBalanceTransactionService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class CustomerCashBalanceTransactionService : ServiceNested<CustomerCashBalanceTransaction>,
+    public class CustomerCashBalanceTransactionService : Service,
         INestedListable<CustomerCashBalanceTransaction, CustomerCashBalanceTransactionListOptions>,
         INestedRetrievable<CustomerCashBalanceTransaction, CustomerCashBalanceTransactionGetOptions>
     {
diff --git a/src/Stripe.net/Services/CustomerCashBalances/CustomerCashBalanceService.cs b/src/Stripe.net/Services/CustomerCashBalances/CustomerCashBalanceService.cs
index 527a2d5f0d..bee543e398 100644
--- a/src/Stripe.net/Services/CustomerCashBalances/CustomerCashBalanceService.cs
+++ b/src/Stripe.net/Services/CustomerCashBalances/CustomerCashBalanceService.cs
@@ -7,7 +7,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class CustomerCashBalanceService : ServiceNested<CashBalance>
+    public class CustomerCashBalanceService : Service
     {
         public CustomerCashBalanceService()
         {
diff --git a/src/Stripe.net/Services/CustomerCashBalances/CustomerCashBalanceUpdateOptions.cs b/src/Stripe.net/Services/CustomerCashBalances/CustomerCashBalanceUpdateOptions.cs
index ce5141b8cf..412a2be07d 100644
--- a/src/Stripe.net/Services/CustomerCashBalances/CustomerCashBalanceUpdateOptions.cs
+++ b/src/Stripe.net/Services/CustomerCashBalances/CustomerCashBalanceUpdateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerCashBalanceUpdateOptions : BaseOptions
     {
@@ -9,6 +12,9 @@ public class CustomerCashBalanceUpdateOptions : BaseOptions
         /// A hash of settings for this cash balance.
         /// </summary>
         [JsonProperty("settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("settings")]
+#endif
         public CustomerCashBalanceSettingsOptions Settings { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CustomerFundingInstructions/CustomerFundingInstructionsBankTransferEuBankTransferOptions.cs b/src/Stripe.net/Services/CustomerFundingInstructions/CustomerFundingInstructionsBankTransferEuBankTransferOptions.cs
index 9358d30452..58e957056a 100644
--- a/src/Stripe.net/Services/CustomerFundingInstructions/CustomerFundingInstructionsBankTransferEuBankTransferOptions.cs
+++ b/src/Stripe.net/Services/CustomerFundingInstructions/CustomerFundingInstructionsBankTransferEuBankTransferOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerFundingInstructionsBankTransferEuBankTransferOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class CustomerFundingInstructionsBankTransferEuBankTransferOptions : INes
         /// <c>BE</c>, <c>DE</c>, <c>ES</c>, <c>FR</c>, <c>IE</c>, or <c>NL</c>.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CustomerFundingInstructions/CustomerFundingInstructionsBankTransferOptions.cs b/src/Stripe.net/Services/CustomerFundingInstructions/CustomerFundingInstructionsBankTransferOptions.cs
index 9475805e3e..1dc7a8c9b6 100644
--- a/src/Stripe.net/Services/CustomerFundingInstructions/CustomerFundingInstructionsBankTransferOptions.cs
+++ b/src/Stripe.net/Services/CustomerFundingInstructions/CustomerFundingInstructionsBankTransferOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerFundingInstructionsBankTransferOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class CustomerFundingInstructionsBankTransferOptions : INestedOptions
         /// Configuration for eu_bank_transfer funding type.
         /// </summary>
         [JsonProperty("eu_bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eu_bank_transfer")]
+#endif
         public CustomerFundingInstructionsBankTransferEuBankTransferOptions EuBankTransfer { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class CustomerFundingInstructionsBankTransferOptions : INestedOptions
         /// One of: <c>iban</c>, <c>sort_code</c>, <c>spei</c>, or <c>zengin</c>.
         /// </summary>
         [JsonProperty("requested_address_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested_address_types")]
+#endif
         public List<string> RequestedAddressTypes { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class CustomerFundingInstructionsBankTransferOptions : INestedOptions
         /// <c>mx_bank_transfer</c>, or <c>us_bank_transfer</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CustomerFundingInstructions/CustomerFundingInstructionsCreateOptions.cs b/src/Stripe.net/Services/CustomerFundingInstructions/CustomerFundingInstructionsCreateOptions.cs
index 14f577fa5a..eceac44512 100644
--- a/src/Stripe.net/Services/CustomerFundingInstructions/CustomerFundingInstructionsCreateOptions.cs
+++ b/src/Stripe.net/Services/CustomerFundingInstructions/CustomerFundingInstructionsCreateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerFundingInstructionsCreateOptions : BaseOptions
     {
@@ -9,6 +12,9 @@ public class CustomerFundingInstructionsCreateOptions : BaseOptions
         /// Additional parameters for <c>bank_transfer</c> funding types.
         /// </summary>
         [JsonProperty("bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_transfer")]
+#endif
         public CustomerFundingInstructionsBankTransferOptions BankTransfer { get; set; }
 
         /// <summary>
@@ -17,12 +23,18 @@ public class CustomerFundingInstructionsCreateOptions : BaseOptions
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// The <c>funding_type</c> to get the instructions for.
         /// </summary>
         [JsonProperty("funding_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding_type")]
+#endif
         public string FundingType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CustomerFundingInstructions/CustomerFundingInstructionsService.cs b/src/Stripe.net/Services/CustomerFundingInstructions/CustomerFundingInstructionsService.cs
index 5c92a3a10c..465a913786 100644
--- a/src/Stripe.net/Services/CustomerFundingInstructions/CustomerFundingInstructionsService.cs
+++ b/src/Stripe.net/Services/CustomerFundingInstructions/CustomerFundingInstructionsService.cs
@@ -7,7 +7,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class CustomerFundingInstructionsService : ServiceNested<FundingInstructions>
+    public class CustomerFundingInstructionsService : Service
     {
         public CustomerFundingInstructionsService()
         {
diff --git a/src/Stripe.net/Services/CustomerPaymentMethods/CustomerPaymentMethodListOptions.cs b/src/Stripe.net/Services/CustomerPaymentMethods/CustomerPaymentMethodListOptions.cs
index b7afc20aab..9e98724146 100644
--- a/src/Stripe.net/Services/CustomerPaymentMethods/CustomerPaymentMethodListOptions.cs
+++ b/src/Stripe.net/Services/CustomerPaymentMethods/CustomerPaymentMethodListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerPaymentMethodListOptions : ListOptions
     {
@@ -13,6 +16,9 @@ public class CustomerPaymentMethodListOptions : ListOptions
         /// One of: <c>always</c>, <c>limited</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("allow_redisplay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allow_redisplay")]
+#endif
         public string AllowRedisplay { get; set; }
 
         /// <summary>
@@ -32,6 +38,9 @@ public class CustomerPaymentMethodListOptions : ListOptions
         /// <c>zip</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CustomerPaymentMethods/CustomerPaymentMethodService.cs b/src/Stripe.net/Services/CustomerPaymentMethods/CustomerPaymentMethodService.cs
index af9040c799..fd9ccbf540 100644
--- a/src/Stripe.net/Services/CustomerPaymentMethods/CustomerPaymentMethodService.cs
+++ b/src/Stripe.net/Services/CustomerPaymentMethods/CustomerPaymentMethodService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class CustomerPaymentMethodService : ServiceNested<PaymentMethod>,
+    public class CustomerPaymentMethodService : Service,
         INestedListable<PaymentMethod, CustomerPaymentMethodListOptions>,
         INestedRetrievable<PaymentMethod, CustomerPaymentMethodGetOptions>
     {
diff --git a/src/Stripe.net/Services/CustomerPaymentSources/CustomerPaymentSourceCreateOptions.cs b/src/Stripe.net/Services/CustomerPaymentSources/CustomerPaymentSourceCreateOptions.cs
index 408f1291f7..5db96273c2 100644
--- a/src/Stripe.net/Services/CustomerPaymentSources/CustomerPaymentSourceCreateOptions.cs
+++ b/src/Stripe.net/Services/CustomerPaymentSources/CustomerPaymentSourceCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerPaymentSourceCreateOptions : BaseOptions, IHasMetadata
     {
@@ -13,15 +16,24 @@ public class CustomerPaymentSourceCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Please refer to full <a href="https://stripe.com/docs/api">documentation</a> instead.
         /// </summary>
         [JsonProperty("source")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source")]
+#endif
         public string Source { get; set; }
 
         [JsonProperty("validate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("validate")]
+#endif
         public bool? Validate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CustomerPaymentSources/CustomerPaymentSourceListOptions.cs b/src/Stripe.net/Services/CustomerPaymentSources/CustomerPaymentSourceListOptions.cs
index c6d455dc88..1f806779a5 100644
--- a/src/Stripe.net/Services/CustomerPaymentSources/CustomerPaymentSourceListOptions.cs
+++ b/src/Stripe.net/Services/CustomerPaymentSources/CustomerPaymentSourceListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerPaymentSourceListOptions : ListOptions, IHasObject
     {
@@ -9,6 +12,9 @@ public class CustomerPaymentSourceListOptions : ListOptions, IHasObject
         /// Filter sources according to a particular object type.
         /// </summary>
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         public string Object { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CustomerPaymentSources/CustomerPaymentSourceOwnerOptions.cs b/src/Stripe.net/Services/CustomerPaymentSources/CustomerPaymentSourceOwnerOptions.cs
index 51c6042963..b07e953bd2 100644
--- a/src/Stripe.net/Services/CustomerPaymentSources/CustomerPaymentSourceOwnerOptions.cs
+++ b/src/Stripe.net/Services/CustomerPaymentSources/CustomerPaymentSourceOwnerOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerPaymentSourceOwnerOptions : INestedOptions
     {
@@ -9,24 +12,36 @@ public class CustomerPaymentSourceOwnerOptions : INestedOptions
         /// Owner's address.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public AddressOptions Address { get; set; }
 
         /// <summary>
         /// Owner's email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// Owner's full name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// Owner's phone number.
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CustomerPaymentSources/CustomerPaymentSourceService.cs b/src/Stripe.net/Services/CustomerPaymentSources/CustomerPaymentSourceService.cs
index d98d95de71..494c55863e 100644
--- a/src/Stripe.net/Services/CustomerPaymentSources/CustomerPaymentSourceService.cs
+++ b/src/Stripe.net/Services/CustomerPaymentSources/CustomerPaymentSourceService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class CustomerPaymentSourceService : ServiceNested<IPaymentSource>,
+    public class CustomerPaymentSourceService : Service,
         INestedCreatable<IPaymentSource, CustomerPaymentSourceCreateOptions>,
         INestedDeletable<IPaymentSource, CustomerPaymentSourceDeleteOptions>,
         INestedListable<IPaymentSource, CustomerPaymentSourceListOptions>,
diff --git a/src/Stripe.net/Services/CustomerPaymentSources/CustomerPaymentSourceUpdateOptions.cs b/src/Stripe.net/Services/CustomerPaymentSources/CustomerPaymentSourceUpdateOptions.cs
index 639c5878d9..509a8b93f4 100644
--- a/src/Stripe.net/Services/CustomerPaymentSources/CustomerPaymentSourceUpdateOptions.cs
+++ b/src/Stripe.net/Services/CustomerPaymentSources/CustomerPaymentSourceUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerPaymentSourceUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -10,6 +13,9 @@ public class CustomerPaymentSourceUpdateOptions : BaseOptions, IHasMetadata
         /// The name of the person or business that owns the bank account.
         /// </summary>
         [JsonProperty("account_holder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_name")]
+#endif
         public string AccountHolderName { get; set; }
 
         /// <summary>
@@ -18,54 +24,81 @@ public class CustomerPaymentSourceUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>company</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("account_holder_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_type")]
+#endif
         public string AccountHolderType { get; set; }
 
         /// <summary>
         /// City/District/Suburb/Town/Village.
         /// </summary>
         [JsonProperty("address_city")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_city")]
+#endif
         public string AddressCity { get; set; }
 
         /// <summary>
         /// Billing address country, if provided when creating card.
         /// </summary>
         [JsonProperty("address_country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_country")]
+#endif
         public string AddressCountry { get; set; }
 
         /// <summary>
         /// Address line 1 (Street address/PO Box/Company name).
         /// </summary>
         [JsonProperty("address_line1")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_line1")]
+#endif
         public string AddressLine1 { get; set; }
 
         /// <summary>
         /// Address line 2 (Apartment/Suite/Unit/Building).
         /// </summary>
         [JsonProperty("address_line2")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_line2")]
+#endif
         public string AddressLine2 { get; set; }
 
         /// <summary>
         /// State/County/Province/Region.
         /// </summary>
         [JsonProperty("address_state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_state")]
+#endif
         public string AddressState { get; set; }
 
         /// <summary>
         /// ZIP or postal code.
         /// </summary>
         [JsonProperty("address_zip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_zip")]
+#endif
         public string AddressZip { get; set; }
 
         /// <summary>
         /// Two digit number representing the card’s expiration month.
         /// </summary>
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public string ExpMonth { get; set; }
 
         /// <summary>
         /// Four digit number representing the card’s expiration year.
         /// </summary>
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public string ExpYear { get; set; }
 
         /// <summary>
@@ -75,15 +108,24 @@ public class CustomerPaymentSourceUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Cardholder name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         [JsonProperty("owner")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("owner")]
+#endif
         public CustomerPaymentSourceOwnerOptions Owner { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CustomerPaymentSources/CustomerPaymentSourceVerifyOptions.cs b/src/Stripe.net/Services/CustomerPaymentSources/CustomerPaymentSourceVerifyOptions.cs
index c28aa62556..014e1edfe5 100644
--- a/src/Stripe.net/Services/CustomerPaymentSources/CustomerPaymentSourceVerifyOptions.cs
+++ b/src/Stripe.net/Services/CustomerPaymentSources/CustomerPaymentSourceVerifyOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerPaymentSourceVerifyOptions : BaseOptions
     {
@@ -11,6 +14,9 @@ public class CustomerPaymentSourceVerifyOptions : BaseOptions
         /// to the bank account.
         /// </summary>
         [JsonProperty("amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amounts")]
+#endif
         public List<long?> Amounts { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CustomerSessions/CustomerSessionComponentsBuyButtonOptions.cs b/src/Stripe.net/Services/CustomerSessions/CustomerSessionComponentsBuyButtonOptions.cs
index 3a95a27804..8d74b07e1e 100644
--- a/src/Stripe.net/Services/CustomerSessions/CustomerSessionComponentsBuyButtonOptions.cs
+++ b/src/Stripe.net/Services/CustomerSessions/CustomerSessionComponentsBuyButtonOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerSessionComponentsBuyButtonOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class CustomerSessionComponentsBuyButtonOptions : INestedOptions
         /// Whether the buy button is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CustomerSessions/CustomerSessionComponentsOptions.cs b/src/Stripe.net/Services/CustomerSessions/CustomerSessionComponentsOptions.cs
index ca1d3ab807..0d63536302 100644
--- a/src/Stripe.net/Services/CustomerSessions/CustomerSessionComponentsOptions.cs
+++ b/src/Stripe.net/Services/CustomerSessions/CustomerSessionComponentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerSessionComponentsOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class CustomerSessionComponentsOptions : INestedOptions
         /// Configuration for buy button.
         /// </summary>
         [JsonProperty("buy_button")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("buy_button")]
+#endif
         public CustomerSessionComponentsBuyButtonOptions BuyButton { get; set; }
 
         /// <summary>
         /// Configuration for the Payment Element.
         /// </summary>
         [JsonProperty("payment_element")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_element")]
+#endif
         public CustomerSessionComponentsPaymentElementOptions PaymentElement { get; set; }
 
         /// <summary>
         /// Configuration for the pricing table.
         /// </summary>
         [JsonProperty("pricing_table")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pricing_table")]
+#endif
         public CustomerSessionComponentsPricingTableOptions PricingTable { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CustomerSessions/CustomerSessionComponentsPaymentElementFeaturesOptions.cs b/src/Stripe.net/Services/CustomerSessions/CustomerSessionComponentsPaymentElementFeaturesOptions.cs
index d4364d00de..0b1978d321 100644
--- a/src/Stripe.net/Services/CustomerSessions/CustomerSessionComponentsPaymentElementFeaturesOptions.cs
+++ b/src/Stripe.net/Services/CustomerSessions/CustomerSessionComponentsPaymentElementFeaturesOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerSessionComponentsPaymentElementFeaturesOptions : INestedOptions
     {
@@ -18,6 +21,9 @@ public class CustomerSessionComponentsPaymentElementFeaturesOptions : INestedOpt
         /// One of: <c>always</c>, <c>limited</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("payment_method_allow_redisplay_filters")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_allow_redisplay_filters")]
+#endif
         public List<string> PaymentMethodAllowRedisplayFilters { get; set; }
 
         /// <summary>
@@ -26,6 +32,9 @@ public class CustomerSessionComponentsPaymentElementFeaturesOptions : INestedOpt
         /// One of: <c>disabled</c>, or <c>enabled</c>.
         /// </summary>
         [JsonProperty("payment_method_redisplay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_redisplay")]
+#endif
         public string PaymentMethodRedisplay { get; set; }
 
         /// <summary>
@@ -33,6 +42,9 @@ public class CustomerSessionComponentsPaymentElementFeaturesOptions : INestedOpt
         /// This parameter defaults to <c>3</c>.
         /// </summary>
         [JsonProperty("payment_method_redisplay_limit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_redisplay_limit")]
+#endif
         public long? PaymentMethodRedisplayLimit { get; set; }
 
         /// <summary>
@@ -47,6 +59,9 @@ public class CustomerSessionComponentsPaymentElementFeaturesOptions : INestedOpt
         /// One of: <c>disabled</c>, or <c>enabled</c>.
         /// </summary>
         [JsonProperty("payment_method_remove")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_remove")]
+#endif
         public string PaymentMethodRemove { get; set; }
 
         /// <summary>
@@ -62,6 +77,9 @@ public class CustomerSessionComponentsPaymentElementFeaturesOptions : INestedOpt
         /// One of: <c>disabled</c>, or <c>enabled</c>.
         /// </summary>
         [JsonProperty("payment_method_save")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_save")]
+#endif
         public string PaymentMethodSave { get; set; }
 
         /// <summary>
@@ -76,6 +94,9 @@ public class CustomerSessionComponentsPaymentElementFeaturesOptions : INestedOpt
         /// One of: <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("payment_method_save_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_save_usage")]
+#endif
         public string PaymentMethodSaveUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CustomerSessions/CustomerSessionComponentsPaymentElementOptions.cs b/src/Stripe.net/Services/CustomerSessions/CustomerSessionComponentsPaymentElementOptions.cs
index a9a5a7ed13..ed6619680a 100644
--- a/src/Stripe.net/Services/CustomerSessions/CustomerSessionComponentsPaymentElementOptions.cs
+++ b/src/Stripe.net/Services/CustomerSessions/CustomerSessionComponentsPaymentElementOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerSessionComponentsPaymentElementOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class CustomerSessionComponentsPaymentElementOptions : INestedOptions
         /// Whether the Payment Element is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
         /// This hash defines whether the Payment Element supports certain features.
         /// </summary>
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public CustomerSessionComponentsPaymentElementFeaturesOptions Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CustomerSessions/CustomerSessionComponentsPricingTableOptions.cs b/src/Stripe.net/Services/CustomerSessions/CustomerSessionComponentsPricingTableOptions.cs
index 184c0f86c9..0994a56cb2 100644
--- a/src/Stripe.net/Services/CustomerSessions/CustomerSessionComponentsPricingTableOptions.cs
+++ b/src/Stripe.net/Services/CustomerSessions/CustomerSessionComponentsPricingTableOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerSessionComponentsPricingTableOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class CustomerSessionComponentsPricingTableOptions : INestedOptions
         /// Whether the pricing table is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CustomerSessions/CustomerSessionCreateOptions.cs b/src/Stripe.net/Services/CustomerSessions/CustomerSessionCreateOptions.cs
index d6be9b7e76..e69cebd9e6 100644
--- a/src/Stripe.net/Services/CustomerSessions/CustomerSessionCreateOptions.cs
+++ b/src/Stripe.net/Services/CustomerSessions/CustomerSessionCreateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerSessionCreateOptions : BaseOptions
     {
@@ -9,12 +12,18 @@ public class CustomerSessionCreateOptions : BaseOptions
         /// Configuration for each component. Exactly 1 component must be enabled.
         /// </summary>
         [JsonProperty("components")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("components")]
+#endif
         public CustomerSessionComponentsOptions Components { get; set; }
 
         /// <summary>
         /// The ID of an existing customer for which to create the Customer Session.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CustomerSessions/CustomerSessionService.cs b/src/Stripe.net/Services/CustomerSessions/CustomerSessionService.cs
index 91a884aaeb..5170820297 100644
--- a/src/Stripe.net/Services/CustomerSessions/CustomerSessionService.cs
+++ b/src/Stripe.net/Services/CustomerSessions/CustomerSessionService.cs
@@ -6,7 +6,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class CustomerSessionService : Service<CustomerSession>,
+    public class CustomerSessionService : Service,
         ICreatable<CustomerSession, CustomerSessionCreateOptions>
     {
         public CustomerSessionService()
diff --git a/src/Stripe.net/Services/CustomerTaxIds/CustomerTaxIdCreateOptions.cs b/src/Stripe.net/Services/CustomerTaxIds/CustomerTaxIdCreateOptions.cs
index 3539f028ac..285e1e5a64 100644
--- a/src/Stripe.net/Services/CustomerTaxIds/CustomerTaxIdCreateOptions.cs
+++ b/src/Stripe.net/Services/CustomerTaxIds/CustomerTaxIdCreateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerTaxIdCreateOptions : BaseOptions
     {
@@ -48,12 +51,18 @@ public class CustomerTaxIdCreateOptions : BaseOptions
         /// <c>vn_tin</c>, <c>za_vat</c>, <c>zm_tin</c>, or <c>zw_tin</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
         /// Value of the tax ID.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/CustomerTaxIds/CustomerTaxIdService.cs b/src/Stripe.net/Services/CustomerTaxIds/CustomerTaxIdService.cs
index 4f03ab3f71..60bb534747 100644
--- a/src/Stripe.net/Services/CustomerTaxIds/CustomerTaxIdService.cs
+++ b/src/Stripe.net/Services/CustomerTaxIds/CustomerTaxIdService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class CustomerTaxIdService : ServiceNested<TaxId>,
+    public class CustomerTaxIdService : Service,
         INestedCreatable<TaxId, CustomerTaxIdCreateOptions>,
         INestedDeletable<TaxId, CustomerTaxIdDeleteOptions>,
         INestedListable<TaxId, CustomerTaxIdListOptions>,
diff --git a/src/Stripe.net/Services/Customers/CustomerCashBalanceOptions.cs b/src/Stripe.net/Services/Customers/CustomerCashBalanceOptions.cs
index b7ffefde0a..c806aed531 100644
--- a/src/Stripe.net/Services/Customers/CustomerCashBalanceOptions.cs
+++ b/src/Stripe.net/Services/Customers/CustomerCashBalanceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerCashBalanceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class CustomerCashBalanceOptions : INestedOptions
         /// of funds received.
         /// </summary>
         [JsonProperty("settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("settings")]
+#endif
         public CustomerCashBalanceSettingsOptions Settings { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Customers/CustomerCashBalanceSettingsOptions.cs b/src/Stripe.net/Services/Customers/CustomerCashBalanceSettingsOptions.cs
index 4ce95e7dd6..4508d099bf 100644
--- a/src/Stripe.net/Services/Customers/CustomerCashBalanceSettingsOptions.cs
+++ b/src/Stripe.net/Services/Customers/CustomerCashBalanceSettingsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerCashBalanceSettingsOptions : INestedOptions
     {
@@ -13,6 +16,9 @@ public class CustomerCashBalanceSettingsOptions : INestedOptions
         /// One of: <c>automatic</c>, <c>manual</c>, or <c>merchant_default</c>.
         /// </summary>
         [JsonProperty("reconciliation_mode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reconciliation_mode")]
+#endif
         public string ReconciliationMode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Customers/CustomerCreateOptions.cs b/src/Stripe.net/Services/Customers/CustomerCreateOptions.cs
index 799ac05ab8..ef46b7e414 100644
--- a/src/Stripe.net/Services/Customers/CustomerCreateOptions.cs
+++ b/src/Stripe.net/Services/Customers/CustomerCreateOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerCreateOptions : BaseOptions, IHasMetadata
     {
@@ -11,6 +14,9 @@ public class CustomerCreateOptions : BaseOptions, IHasMetadata
         /// The customer's address.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public AddressOptions Address { get; set; }
 
         /// <summary>
@@ -20,15 +26,24 @@ public class CustomerCreateOptions : BaseOptions, IHasMetadata
         /// amount due on an invoice.
         /// </summary>
         [JsonProperty("balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("balance")]
+#endif
         public long? Balance { get; set; }
 
         /// <summary>
         /// Balance information and default balance settings for this customer.
         /// </summary>
         [JsonProperty("cash_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cash_balance")]
+#endif
         public CustomerCashBalanceOptions CashBalance { get; set; }
 
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
@@ -36,6 +51,9 @@ public class CustomerCreateOptions : BaseOptions, IHasMetadata
         /// the customer in the dashboard.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -43,6 +61,9 @@ public class CustomerCreateOptions : BaseOptions, IHasMetadata
         /// can be useful for searching and tracking. This may be up to <em>512 characters</em>.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
@@ -50,12 +71,18 @@ public class CustomerCreateOptions : BaseOptions, IHasMetadata
         /// uppercase letters or numbers.
         /// </summary>
         [JsonProperty("invoice_prefix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_prefix")]
+#endif
         public string InvoicePrefix { get; set; }
 
         /// <summary>
         /// Default invoice settings for this customer.
         /// </summary>
         [JsonProperty("invoice_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_settings")]
+#endif
         public CustomerInvoiceSettingsOptions InvoiceSettings { get; set; }
 
         /// <summary>
@@ -65,36 +92,57 @@ public class CustomerCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The customer's full name or business name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// The sequence to be used on the customer's next invoice. Defaults to 1.
         /// </summary>
         [JsonProperty("next_invoice_sequence")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("next_invoice_sequence")]
+#endif
         public long? NextInvoiceSequence { get; set; }
 
         [JsonProperty("payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method")]
+#endif
         public string PaymentMethod { get; set; }
 
         /// <summary>
         /// The customer's phone number.
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
 
         [JsonProperty("plan")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("plan")]
+#endif
         public string Plan { get; set; }
 
         /// <summary>
         /// Customer's preferred languages, ordered by preference.
         /// </summary>
         [JsonProperty("preferred_locales")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_locales")]
+#endif
         public List<string> PreferredLocales { get; set; }
 
         /// <summary>
@@ -103,22 +151,35 @@ public class CustomerCreateOptions : BaseOptions, IHasMetadata
         /// discount.
         /// </summary>
         [JsonProperty("promotion_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotion_code")]
+#endif
         public string PromotionCode { get; set; }
 
         /// <summary>
         /// The customer's shipping information. Appears on invoices emailed to this customer.
         /// </summary>
         [JsonProperty("shipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping")]
+#endif
         public ShippingOptions Shipping { get; set; }
 
         [JsonProperty("source")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<string, CardCreateNestedOptions> Source { get; set; }
 
         /// <summary>
         /// Tax details about the customer.
         /// </summary>
         [JsonProperty("tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax")]
+#endif
         public CustomerTaxOptions Tax { get; set; }
 
         /// <summary>
@@ -126,21 +187,33 @@ public class CustomerCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>exempt</c>, <c>none</c>, or <c>reverse</c>.
         /// </summary>
         [JsonProperty("tax_exempt")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_exempt")]
+#endif
         public string TaxExempt { get; set; }
 
         /// <summary>
         /// The customer's tax IDs.
         /// </summary>
         [JsonProperty("tax_id_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_id_data")]
+#endif
         public List<CustomerTaxIdDataOptions> TaxIdData { get; set; }
 
         /// <summary>
         /// ID of the test clock to attach to the customer.
         /// </summary>
         [JsonProperty("test_clock")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("test_clock")]
+#endif
         public string TestClock { get; set; }
 
         [JsonProperty("validate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("validate")]
+#endif
         public bool? Validate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Customers/CustomerInvoiceSettingsCustomFieldOptions.cs b/src/Stripe.net/Services/Customers/CustomerInvoiceSettingsCustomFieldOptions.cs
index 4f88e06a27..676a8bcdec 100644
--- a/src/Stripe.net/Services/Customers/CustomerInvoiceSettingsCustomFieldOptions.cs
+++ b/src/Stripe.net/Services/Customers/CustomerInvoiceSettingsCustomFieldOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerInvoiceSettingsCustomFieldOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class CustomerInvoiceSettingsCustomFieldOptions : INestedOptions
         /// The name of the custom field. This may be up to 40 characters.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// The value of the custom field. This may be up to 140 characters.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Customers/CustomerInvoiceSettingsOptions.cs b/src/Stripe.net/Services/Customers/CustomerInvoiceSettingsOptions.cs
index 1936bfc232..fe219ee2f9 100644
--- a/src/Stripe.net/Services/Customers/CustomerInvoiceSettingsOptions.cs
+++ b/src/Stripe.net/Services/Customers/CustomerInvoiceSettingsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerInvoiceSettingsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class CustomerInvoiceSettingsOptions : INestedOptions
         /// When updating, pass an empty string to remove previously-defined fields.
         /// </summary>
         [JsonProperty("custom_fields")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_fields")]
+#endif
         public List<CustomerInvoiceSettingsCustomFieldOptions> CustomFields { get; set; }
 
         /// <summary>
@@ -18,18 +24,27 @@ public class CustomerInvoiceSettingsOptions : INestedOptions
         /// default payment method for subscriptions and invoices.
         /// </summary>
         [JsonProperty("default_payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_payment_method")]
+#endif
         public string DefaultPaymentMethod { get; set; }
 
         /// <summary>
         /// Default footer to be displayed on invoices for this customer.
         /// </summary>
         [JsonProperty("footer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("footer")]
+#endif
         public string Footer { get; set; }
 
         /// <summary>
         /// Default options for invoice PDF rendering for this customer.
         /// </summary>
         [JsonProperty("rendering_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("rendering_options")]
+#endif
         public CustomerInvoiceSettingsRenderingOptionsOptions RenderingOptions { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Customers/CustomerInvoiceSettingsRenderingOptionsOptions.cs b/src/Stripe.net/Services/Customers/CustomerInvoiceSettingsRenderingOptionsOptions.cs
index af37cb2fff..8af0d1faf1 100644
--- a/src/Stripe.net/Services/Customers/CustomerInvoiceSettingsRenderingOptionsOptions.cs
+++ b/src/Stripe.net/Services/Customers/CustomerInvoiceSettingsRenderingOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerInvoiceSettingsRenderingOptionsOptions : INestedOptions
     {
@@ -14,12 +17,18 @@ public class CustomerInvoiceSettingsRenderingOptionsOptions : INestedOptions
         /// One of: <c>exclude_tax</c>, or <c>include_inclusive_tax</c>.
         /// </summary>
         [JsonProperty("amount_tax_display")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_tax_display")]
+#endif
         public string AmountTaxDisplay { get; set; }
 
         /// <summary>
         /// ID of the invoice rendering template to use for future invoices.
         /// </summary>
         [JsonProperty("template")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("template")]
+#endif
         public string Template { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Customers/CustomerListOptions.cs b/src/Stripe.net/Services/Customers/CustomerListOptions.cs
index 7b1ce3f455..7d781ea7e9 100644
--- a/src/Stripe.net/Services/Customers/CustomerListOptions.cs
+++ b/src/Stripe.net/Services/Customers/CustomerListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerListOptions : ListOptionsWithCreated
     {
@@ -10,6 +13,9 @@ public class CustomerListOptions : ListOptionsWithCreated
         /// value must be a string.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class CustomerListOptions : ListOptionsWithCreated
         /// response will not include customers with test clocks if this parameter is not set.
         /// </summary>
         [JsonProperty("test_clock")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("test_clock")]
+#endif
         public string TestClock { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Customers/CustomerService.cs b/src/Stripe.net/Services/Customers/CustomerService.cs
index 9a152d8d93..51e8d9350d 100644
--- a/src/Stripe.net/Services/Customers/CustomerService.cs
+++ b/src/Stripe.net/Services/Customers/CustomerService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public partial class CustomerService : Service<Customer>,
+    public partial class CustomerService : Service,
         ICreatable<Customer, CustomerCreateOptions>,
         IDeletable<Customer, CustomerDeleteOptions>,
         IListable<Customer, CustomerListOptions>,
diff --git a/src/Stripe.net/Services/Customers/CustomerTaxIdDataOptions.cs b/src/Stripe.net/Services/Customers/CustomerTaxIdDataOptions.cs
index 35b890c661..959b6afc0f 100644
--- a/src/Stripe.net/Services/Customers/CustomerTaxIdDataOptions.cs
+++ b/src/Stripe.net/Services/Customers/CustomerTaxIdDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerTaxIdDataOptions : INestedOptions
     {
@@ -48,12 +51,18 @@ public class CustomerTaxIdDataOptions : INestedOptions
         /// <c>vn_tin</c>, <c>za_vat</c>, <c>zm_tin</c>, or <c>zw_tin</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
         /// Value of the tax ID.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Customers/CustomerTaxOptions.cs b/src/Stripe.net/Services/Customers/CustomerTaxOptions.cs
index 9b166e88fe..b579f196fb 100644
--- a/src/Stripe.net/Services/Customers/CustomerTaxOptions.cs
+++ b/src/Stripe.net/Services/Customers/CustomerTaxOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerTaxOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class CustomerTaxOptions : INestedOptions
         /// frequently since it could result in unexpected tax location/reporting outcomes.
         /// </summary>
         [JsonProperty("ip_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip_address")]
+#endif
         public string IpAddress { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class CustomerTaxOptions : INestedOptions
         /// One of: <c>auto</c>, <c>deferred</c>, or <c>immediately</c>.
         /// </summary>
         [JsonProperty("validate_location")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("validate_location")]
+#endif
         public string ValidateLocation { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Customers/CustomerUpdateOptions.cs b/src/Stripe.net/Services/Customers/CustomerUpdateOptions.cs
index c302361dd0..2e8f2518b6 100644
--- a/src/Stripe.net/Services/Customers/CustomerUpdateOptions.cs
+++ b/src/Stripe.net/Services/Customers/CustomerUpdateOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -11,6 +14,9 @@ public class CustomerUpdateOptions : BaseOptions, IHasMetadata
         /// The customer's address.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public AddressOptions Address { get; set; }
 
         /// <summary>
@@ -20,15 +26,24 @@ public class CustomerUpdateOptions : BaseOptions, IHasMetadata
         /// amount due on an invoice.
         /// </summary>
         [JsonProperty("balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("balance")]
+#endif
         public long? Balance { get; set; }
 
         /// <summary>
         /// Balance information and default balance settings for this customer.
         /// </summary>
         [JsonProperty("cash_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cash_balance")]
+#endif
         public CustomerCashBalanceOptions CashBalance { get; set; }
 
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
@@ -44,6 +59,9 @@ public class CustomerUpdateOptions : BaseOptions, IHasMetadata
         /// property.
         /// </summary>
         [JsonProperty("default_source")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_source")]
+#endif
         public string DefaultSource { get; set; }
 
         /// <summary>
@@ -51,6 +69,9 @@ public class CustomerUpdateOptions : BaseOptions, IHasMetadata
         /// the customer in the dashboard.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -58,6 +79,9 @@ public class CustomerUpdateOptions : BaseOptions, IHasMetadata
         /// can be useful for searching and tracking. This may be up to <em>512 characters</em>.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
@@ -65,12 +89,18 @@ public class CustomerUpdateOptions : BaseOptions, IHasMetadata
         /// uppercase letters or numbers.
         /// </summary>
         [JsonProperty("invoice_prefix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_prefix")]
+#endif
         public string InvoicePrefix { get; set; }
 
         /// <summary>
         /// Default invoice settings for this customer.
         /// </summary>
         [JsonProperty("invoice_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_settings")]
+#endif
         public CustomerInvoiceSettingsOptions InvoiceSettings { get; set; }
 
         /// <summary>
@@ -80,30 +110,45 @@ public class CustomerUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The customer's full name or business name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// The sequence to be used on the customer's next invoice. Defaults to 1.
         /// </summary>
         [JsonProperty("next_invoice_sequence")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("next_invoice_sequence")]
+#endif
         public long? NextInvoiceSequence { get; set; }
 
         /// <summary>
         /// The customer's phone number.
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
 
         /// <summary>
         /// Customer's preferred languages, ordered by preference.
         /// </summary>
         [JsonProperty("preferred_locales")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_locales")]
+#endif
         public List<string> PreferredLocales { get; set; }
 
         /// <summary>
@@ -112,22 +157,35 @@ public class CustomerUpdateOptions : BaseOptions, IHasMetadata
         /// discount.
         /// </summary>
         [JsonProperty("promotion_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotion_code")]
+#endif
         public string PromotionCode { get; set; }
 
         /// <summary>
         /// The customer's shipping information. Appears on invoices emailed to this customer.
         /// </summary>
         [JsonProperty("shipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping")]
+#endif
         public ShippingOptions Shipping { get; set; }
 
         [JsonProperty("source")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<string, CardCreateNestedOptions> Source { get; set; }
 
         /// <summary>
         /// Tax details about the customer.
         /// </summary>
         [JsonProperty("tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax")]
+#endif
         public CustomerTaxOptions Tax { get; set; }
 
         /// <summary>
@@ -135,9 +193,15 @@ public class CustomerUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>exempt</c>, <c>none</c>, or <c>reverse</c>.
         /// </summary>
         [JsonProperty("tax_exempt")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_exempt")]
+#endif
         public string TaxExempt { get; set; }
 
         [JsonProperty("validate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("validate")]
+#endif
         public bool? Validate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Customers/ShippingOptions.cs b/src/Stripe.net/Services/Customers/ShippingOptions.cs
index 0689843327..864647184c 100644
--- a/src/Stripe.net/Services/Customers/ShippingOptions.cs
+++ b/src/Stripe.net/Services/Customers/ShippingOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ShippingOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class ShippingOptions : INestedOptions
         /// Customer shipping address.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public AddressOptions Address { get; set; }
 
         /// <summary>
         /// Customer name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// Customer phone (including extension).
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Disputes/DisputeEvidenceEnhancedEvidenceOptions.cs b/src/Stripe.net/Services/Disputes/DisputeEvidenceEnhancedEvidenceOptions.cs
index 58e909e30a..2bd3d35858 100644
--- a/src/Stripe.net/Services/Disputes/DisputeEvidenceEnhancedEvidenceOptions.cs
+++ b/src/Stripe.net/Services/Disputes/DisputeEvidenceEnhancedEvidenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeEvidenceEnhancedEvidenceOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class DisputeEvidenceEnhancedEvidenceOptions : INestedOptions
         /// Evidence provided for Visa Compelling Evidence 3.0 evidence submission.
         /// </summary>
         [JsonProperty("visa_compelling_evidence_3")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("visa_compelling_evidence_3")]
+#endif
         public DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3Options VisaCompellingEvidence3 { get; set; }
 
         /// <summary>
         /// Evidence provided for Visa compliance evidence submission.
         /// </summary>
         [JsonProperty("visa_compliance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("visa_compliance")]
+#endif
         public DisputeEvidenceEnhancedEvidenceVisaComplianceOptions VisaCompliance { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTransactionOptions.cs b/src/Stripe.net/Services/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTransactionOptions.cs
index 520b2369e5..b432900cdc 100644
--- a/src/Stripe.net/Services/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTransactionOptions.cs
+++ b/src/Stripe.net/Services/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTransactionOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTransactionOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTrans
         /// User Account ID used to log into business platform. Must be recognizable by the user.
         /// </summary>
         [JsonProperty("customer_account_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_account_id")]
+#endif
         public string CustomerAccountId { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTrans
         /// hardware and software attributes. Must be at least 20 characters.
         /// </summary>
         [JsonProperty("customer_device_fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_device_fingerprint")]
+#endif
         public string CustomerDeviceFingerprint { get; set; }
 
         /// <summary>
@@ -23,18 +32,27 @@ public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTrans
         /// International Mobile Equipment Identity [IMEI]). Must be at least 15 characters.
         /// </summary>
         [JsonProperty("customer_device_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_device_id")]
+#endif
         public string CustomerDeviceId { get; set; }
 
         /// <summary>
         /// The email address of the customer.
         /// </summary>
         [JsonProperty("customer_email_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_email_address")]
+#endif
         public string CustomerEmailAddress { get; set; }
 
         /// <summary>
         /// The IP address that the customer used when making the purchase.
         /// </summary>
         [JsonProperty("customer_purchase_ip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_purchase_ip")]
+#endif
         public string CustomerPurchaseIp { get; set; }
 
         /// <summary>
@@ -42,12 +60,18 @@ public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTrans
         /// One of: <c>merchandise</c>, or <c>services</c>.
         /// </summary>
         [JsonProperty("merchandise_or_services")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("merchandise_or_services")]
+#endif
         public string MerchandiseOrServices { get; set; }
 
         /// <summary>
         /// A description of the product or service that was sold.
         /// </summary>
         [JsonProperty("product_description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_description")]
+#endif
         public string ProductDescription { get; set; }
 
         /// <summary>
@@ -55,6 +79,9 @@ public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTrans
         /// Compelling Evidence 3.0 evidence submission.
         /// </summary>
         [JsonProperty("shipping_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_address")]
+#endif
         public AddressOptions ShippingAddress { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3Options.cs b/src/Stripe.net/Services/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3Options.cs
index 062e1b6d14..b39ce69ac7 100644
--- a/src/Stripe.net/Services/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3Options.cs
+++ b/src/Stripe.net/Services/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3Options.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3Options : INestedOptions
     {
@@ -10,6 +13,9 @@ public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3Options : INe
         /// Disputed transaction details for Visa Compelling Evidence 3.0 evidence submission.
         /// </summary>
         [JsonProperty("disputed_transaction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("disputed_transaction")]
+#endif
         public DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3DisputedTransactionOptions DisputedTransaction { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3Options : INe
         /// 3.0 evidence submission.
         /// </summary>
         [JsonProperty("prior_undisputed_transactions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("prior_undisputed_transactions")]
+#endif
         public List<DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisputedTransactionOptions> PriorUndisputedTransactions { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisputedTransactionOptions.cs b/src/Stripe.net/Services/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisputedTransactionOptions.cs
index 63213c3962..f6f93c857e 100644
--- a/src/Stripe.net/Services/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisputedTransactionOptions.cs
+++ b/src/Stripe.net/Services/Disputes/DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisputedTransactionOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisputedTransactionOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisput
         /// Stripe charge ID for the Visa Compelling Evidence 3.0 eligible prior charge.
         /// </summary>
         [JsonProperty("charge")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("charge")]
+#endif
         public string Charge { get; set; }
 
         /// <summary>
         /// User Account ID used to log into business platform. Must be recognizable by the user.
         /// </summary>
         [JsonProperty("customer_account_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_account_id")]
+#endif
         public string CustomerAccountId { get; set; }
 
         /// <summary>
@@ -22,6 +31,9 @@ public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisput
         /// hardware and software attributes. Must be at least 20 characters.
         /// </summary>
         [JsonProperty("customer_device_fingerprint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_device_fingerprint")]
+#endif
         public string CustomerDeviceFingerprint { get; set; }
 
         /// <summary>
@@ -29,24 +41,36 @@ public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisput
         /// International Mobile Equipment Identity [IMEI]). Must be at least 15 characters.
         /// </summary>
         [JsonProperty("customer_device_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_device_id")]
+#endif
         public string CustomerDeviceId { get; set; }
 
         /// <summary>
         /// The email address of the customer.
         /// </summary>
         [JsonProperty("customer_email_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_email_address")]
+#endif
         public string CustomerEmailAddress { get; set; }
 
         /// <summary>
         /// The IP address that the customer used when making the purchase.
         /// </summary>
         [JsonProperty("customer_purchase_ip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_purchase_ip")]
+#endif
         public string CustomerPurchaseIp { get; set; }
 
         /// <summary>
         /// A description of the product or service that was sold.
         /// </summary>
         [JsonProperty("product_description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_description")]
+#endif
         public string ProductDescription { get; set; }
 
         /// <summary>
@@ -54,6 +78,9 @@ public class DisputeEvidenceEnhancedEvidenceVisaCompellingEvidence3PriorUndisput
         /// Compelling Evidence 3.0 evidence submission.
         /// </summary>
         [JsonProperty("shipping_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_address")]
+#endif
         public AddressOptions ShippingAddress { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Disputes/DisputeEvidenceEnhancedEvidenceVisaComplianceOptions.cs b/src/Stripe.net/Services/Disputes/DisputeEvidenceEnhancedEvidenceVisaComplianceOptions.cs
index 017f950722..d3e2898d86 100644
--- a/src/Stripe.net/Services/Disputes/DisputeEvidenceEnhancedEvidenceVisaComplianceOptions.cs
+++ b/src/Stripe.net/Services/Disputes/DisputeEvidenceEnhancedEvidenceVisaComplianceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeEvidenceEnhancedEvidenceVisaComplianceOptions : INestedOptions
     {
@@ -13,6 +16,9 @@ public class DisputeEvidenceEnhancedEvidenceVisaComplianceOptions : INestedOptio
         /// the dispute.
         /// </summary>
         [JsonProperty("fee_acknowledged")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fee_acknowledged")]
+#endif
         public bool? FeeAcknowledged { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Disputes/DisputeEvidenceOptions.cs b/src/Stripe.net/Services/Disputes/DisputeEvidenceOptions.cs
index ec558503c9..c1cb6f10d6 100644
--- a/src/Stripe.net/Services/Disputes/DisputeEvidenceOptions.cs
+++ b/src/Stripe.net/Services/Disputes/DisputeEvidenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeEvidenceOptions : INestedOptions
     {
@@ -11,12 +14,18 @@ public class DisputeEvidenceOptions : INestedOptions
         /// timestamps, and any detailed recorded activity. Has a maximum character count of 20,000.
         /// </summary>
         [JsonProperty("access_activity_log")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("access_activity_log")]
+#endif
         public string AccessActivityLog { get; set; }
 
         /// <summary>
         /// The billing address provided by the customer.
         /// </summary>
         [JsonProperty("billing_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_address")]
+#endif
         public string BillingAddress { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class DisputeEvidenceOptions : INestedOptions
         /// subscription cancellation policy, as shown to the customer.
         /// </summary>
         [JsonProperty("cancellation_policy")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancellation_policy")]
+#endif
         public string CancellationPolicy { get; set; }
 
         /// <summary>
@@ -31,6 +43,9 @@ public class DisputeEvidenceOptions : INestedOptions
         /// purchase. Has a maximum character count of 20,000.
         /// </summary>
         [JsonProperty("cancellation_policy_disclosure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancellation_policy_disclosure")]
+#endif
         public string CancellationPolicyDisclosure { get; set; }
 
         /// <summary>
@@ -38,6 +53,9 @@ public class DisputeEvidenceOptions : INestedOptions
         /// character count of 20,000.
         /// </summary>
         [JsonProperty("cancellation_rebuttal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancellation_rebuttal")]
+#endif
         public string CancellationRebuttal { get; set; }
 
         /// <summary>
@@ -47,24 +65,36 @@ public class DisputeEvidenceOptions : INestedOptions
         /// use of or satisfaction with the product or service.
         /// </summary>
         [JsonProperty("customer_communication")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_communication")]
+#endif
         public string CustomerCommunication { get; set; }
 
         /// <summary>
         /// The email address of the customer.
         /// </summary>
         [JsonProperty("customer_email_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_email_address")]
+#endif
         public string CustomerEmailAddress { get; set; }
 
         /// <summary>
         /// The name of the customer.
         /// </summary>
         [JsonProperty("customer_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_name")]
+#endif
         public string CustomerName { get; set; }
 
         /// <summary>
         /// The IP address that the customer used when making the purchase.
         /// </summary>
         [JsonProperty("customer_purchase_ip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_purchase_ip")]
+#endif
         public string CustomerPurchaseIp { get; set; }
 
         /// <summary>
@@ -72,6 +102,9 @@ public class DisputeEvidenceOptions : INestedOptions
         /// relevant document or contract showing the customer's signature.
         /// </summary>
         [JsonProperty("customer_signature")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_signature")]
+#endif
         public string CustomerSignature { get; set; }
 
         /// <summary>
@@ -81,6 +114,9 @@ public class DisputeEvidenceOptions : INestedOptions
         /// document from the disputed payment that proves the two payments are separate.
         /// </summary>
         [JsonProperty("duplicate_charge_documentation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("duplicate_charge_documentation")]
+#endif
         public string DuplicateChargeDocumentation { get; set; }
 
         /// <summary>
@@ -88,6 +124,9 @@ public class DisputeEvidenceOptions : INestedOptions
         /// that appears to be a duplicate. Has a maximum character count of 20,000.
         /// </summary>
         [JsonProperty("duplicate_charge_explanation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("duplicate_charge_explanation")]
+#endif
         public string DuplicateChargeExplanation { get; set; }
 
         /// <summary>
@@ -95,12 +134,18 @@ public class DisputeEvidenceOptions : INestedOptions
         /// charge.
         /// </summary>
         [JsonProperty("duplicate_charge_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("duplicate_charge_id")]
+#endif
         public string DuplicateChargeId { get; set; }
 
         /// <summary>
         /// Additional evidence for qualifying evidence programs.
         /// </summary>
         [JsonProperty("enhanced_evidence")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enhanced_evidence")]
+#endif
         public DisputeEvidenceEnhancedEvidenceOptions EnhancedEvidence { get; set; }
 
         /// <summary>
@@ -108,6 +153,9 @@ public class DisputeEvidenceOptions : INestedOptions
         /// 20,000.
         /// </summary>
         [JsonProperty("product_description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_description")]
+#endif
         public string ProductDescription { get; set; }
 
         /// <summary>
@@ -115,6 +163,9 @@ public class DisputeEvidenceOptions : INestedOptions
         /// receipt or message sent to the customer notifying them of the charge.
         /// </summary>
         [JsonProperty("receipt")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("receipt")]
+#endif
         public string Receipt { get; set; }
 
         /// <summary>
@@ -122,6 +173,9 @@ public class DisputeEvidenceOptions : INestedOptions
         /// refund policy, as shown to the customer.
         /// </summary>
         [JsonProperty("refund_policy")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_policy")]
+#endif
         public string RefundPolicy { get; set; }
 
         /// <summary>
@@ -129,6 +183,9 @@ public class DisputeEvidenceOptions : INestedOptions
         /// purchase. Has a maximum character count of 20,000.
         /// </summary>
         [JsonProperty("refund_policy_disclosure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_policy_disclosure")]
+#endif
         public string RefundPolicyDisclosure { get; set; }
 
         /// <summary>
@@ -136,6 +193,9 @@ public class DisputeEvidenceOptions : INestedOptions
         /// character count of 20,000.
         /// </summary>
         [JsonProperty("refund_refusal_explanation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_refusal_explanation")]
+#endif
         public string RefundRefusalExplanation { get; set; }
 
         /// <summary>
@@ -143,6 +203,9 @@ public class DisputeEvidenceOptions : INestedOptions
         /// clear human-readable format.
         /// </summary>
         [JsonProperty("service_date")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("service_date")]
+#endif
         public string ServiceDate { get; set; }
 
         /// <summary>
@@ -151,6 +214,9 @@ public class DisputeEvidenceOptions : INestedOptions
         /// include a copy of a signed contract, work order, or other form of written agreement.
         /// </summary>
         [JsonProperty("service_documentation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("service_documentation")]
+#endif
         public string ServiceDocumentation { get; set; }
 
         /// <summary>
@@ -158,6 +224,9 @@ public class DisputeEvidenceOptions : INestedOptions
         /// complete address information as possible.
         /// </summary>
         [JsonProperty("shipping_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_address")]
+#endif
         public string ShippingAddress { get; set; }
 
         /// <summary>
@@ -165,6 +234,9 @@ public class DisputeEvidenceOptions : INestedOptions
         /// multiple carriers were used for this purchase, please separate them with commas.
         /// </summary>
         [JsonProperty("shipping_carrier")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_carrier")]
+#endif
         public string ShippingCarrier { get; set; }
 
         /// <summary>
@@ -172,6 +244,9 @@ public class DisputeEvidenceOptions : INestedOptions
         /// human-readable format.
         /// </summary>
         [JsonProperty("shipping_date")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_date")]
+#endif
         public string ShippingDate { get; set; }
 
         /// <summary>
@@ -181,6 +256,9 @@ public class DisputeEvidenceOptions : INestedOptions
         /// shipping label, etc. It should show the customer's full shipping address, if possible.
         /// </summary>
         [JsonProperty("shipping_documentation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_documentation")]
+#endif
         public string ShippingDocumentation { get; set; }
 
         /// <summary>
@@ -189,6 +267,9 @@ public class DisputeEvidenceOptions : INestedOptions
         /// commas.
         /// </summary>
         [JsonProperty("shipping_tracking_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_tracking_number")]
+#endif
         public string ShippingTrackingNumber { get; set; }
 
         /// <summary>
@@ -196,12 +277,18 @@ public class DisputeEvidenceOptions : INestedOptions
         /// additional evidence or statements.
         /// </summary>
         [JsonProperty("uncategorized_file")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("uncategorized_file")]
+#endif
         public string UncategorizedFile { get; set; }
 
         /// <summary>
         /// Any additional evidence or statements. Has a maximum character count of 20,000.
         /// </summary>
         [JsonProperty("uncategorized_text")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("uncategorized_text")]
+#endif
         public string UncategorizedText { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Disputes/DisputeListOptions.cs b/src/Stripe.net/Services/Disputes/DisputeListOptions.cs
index 51c406efd5..2a21f1fad9 100644
--- a/src/Stripe.net/Services/Disputes/DisputeListOptions.cs
+++ b/src/Stripe.net/Services/Disputes/DisputeListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeListOptions : ListOptionsWithCreated
     {
@@ -9,12 +12,18 @@ public class DisputeListOptions : ListOptionsWithCreated
         /// Only return disputes associated to the charge specified by this charge ID.
         /// </summary>
         [JsonProperty("charge")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("charge")]
+#endif
         public string Charge { get; set; }
 
         /// <summary>
         /// Only return disputes associated to the PaymentIntent specified by this PaymentIntent ID.
         /// </summary>
         [JsonProperty("payment_intent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_intent")]
+#endif
         public string PaymentIntent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Disputes/DisputeService.cs b/src/Stripe.net/Services/Disputes/DisputeService.cs
index 8478e9ee27..25aa5e7602 100644
--- a/src/Stripe.net/Services/Disputes/DisputeService.cs
+++ b/src/Stripe.net/Services/Disputes/DisputeService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class DisputeService : Service<Dispute>,
+    public class DisputeService : Service,
         IListable<Dispute, DisputeListOptions>,
         IRetrievable<Dispute, DisputeGetOptions>,
         IUpdatable<Dispute, DisputeUpdateOptions>
diff --git a/src/Stripe.net/Services/Disputes/DisputeUpdateOptions.cs b/src/Stripe.net/Services/Disputes/DisputeUpdateOptions.cs
index d03e609bd0..d7054b7938 100644
--- a/src/Stripe.net/Services/Disputes/DisputeUpdateOptions.cs
+++ b/src/Stripe.net/Services/Disputes/DisputeUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -12,6 +15,9 @@ public class DisputeUpdateOptions : BaseOptions, IHasMetadata
         /// to 150,000.
         /// </summary>
         [JsonProperty("evidence")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("evidence")]
+#endif
         public DisputeEvidenceOptions Evidence { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class DisputeUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -30,6 +39,9 @@ public class DisputeUpdateOptions : BaseOptions, IHasMetadata
         /// (the default).
         /// </summary>
         [JsonProperty("submit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("submit")]
+#endif
         public bool? Submit { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Entitlements/ActiveEntitlements/ActiveEntitlementListOptions.cs b/src/Stripe.net/Services/Entitlements/ActiveEntitlements/ActiveEntitlementListOptions.cs
index 45d6373db9..93f4804a71 100644
--- a/src/Stripe.net/Services/Entitlements/ActiveEntitlements/ActiveEntitlementListOptions.cs
+++ b/src/Stripe.net/Services/Entitlements/ActiveEntitlements/ActiveEntitlementListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Entitlements
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ActiveEntitlementListOptions : ListOptions
     {
@@ -9,6 +12,9 @@ public class ActiveEntitlementListOptions : ListOptions
         /// The ID of the customer.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Entitlements/ActiveEntitlements/ActiveEntitlementService.cs b/src/Stripe.net/Services/Entitlements/ActiveEntitlements/ActiveEntitlementService.cs
index a8d2c7a2cd..6dee760fdd 100644
--- a/src/Stripe.net/Services/Entitlements/ActiveEntitlements/ActiveEntitlementService.cs
+++ b/src/Stripe.net/Services/Entitlements/ActiveEntitlements/ActiveEntitlementService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Entitlements
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class ActiveEntitlementService : Service<ActiveEntitlement>,
+    public class ActiveEntitlementService : Service,
         IListable<ActiveEntitlement, ActiveEntitlementListOptions>,
         IRetrievable<ActiveEntitlement, ActiveEntitlementGetOptions>
     {
diff --git a/src/Stripe.net/Services/Entitlements/Features/FeatureCreateOptions.cs b/src/Stripe.net/Services/Entitlements/Features/FeatureCreateOptions.cs
index c433eb1f4e..e5adb3a785 100644
--- a/src/Stripe.net/Services/Entitlements/Features/FeatureCreateOptions.cs
+++ b/src/Stripe.net/Services/Entitlements/Features/FeatureCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Entitlements
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FeatureCreateOptions : BaseOptions, IHasMetadata
     {
@@ -10,6 +13,9 @@ public class FeatureCreateOptions : BaseOptions, IHasMetadata
         /// A unique key you provide as your own system identifier. This may be up to 80 characters.
         /// </summary>
         [JsonProperty("lookup_key")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lookup_key")]
+#endif
         public string LookupKey { get; set; }
 
         /// <summary>
@@ -17,12 +23,18 @@ public class FeatureCreateOptions : BaseOptions, IHasMetadata
         /// additional information about the object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The feature's name, for your own purpose, not meant to be displayable to the customer.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Entitlements/Features/FeatureListOptions.cs b/src/Stripe.net/Services/Entitlements/Features/FeatureListOptions.cs
index 16196aebc9..dbb39280e2 100644
--- a/src/Stripe.net/Services/Entitlements/Features/FeatureListOptions.cs
+++ b/src/Stripe.net/Services/Entitlements/Features/FeatureListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Entitlements
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FeatureListOptions : ListOptions
     {
@@ -9,12 +12,18 @@ public class FeatureListOptions : ListOptions
         /// If set, filter results to only include features with the given archive status.
         /// </summary>
         [JsonProperty("archived")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("archived")]
+#endif
         public bool? Archived { get; set; }
 
         /// <summary>
         /// If set, filter results to only include features with the given lookup_key.
         /// </summary>
         [JsonProperty("lookup_key")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lookup_key")]
+#endif
         public string LookupKey { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Entitlements/Features/FeatureService.cs b/src/Stripe.net/Services/Entitlements/Features/FeatureService.cs
index 33be9afc30..890cb31cc4 100644
--- a/src/Stripe.net/Services/Entitlements/Features/FeatureService.cs
+++ b/src/Stripe.net/Services/Entitlements/Features/FeatureService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Entitlements
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class FeatureService : Service<Feature>,
+    public class FeatureService : Service,
         ICreatable<Feature, FeatureCreateOptions>,
         IListable<Feature, FeatureListOptions>,
         IRetrievable<Feature, FeatureGetOptions>,
diff --git a/src/Stripe.net/Services/Entitlements/Features/FeatureUpdateOptions.cs b/src/Stripe.net/Services/Entitlements/Features/FeatureUpdateOptions.cs
index b8f09b0ca7..1bbc46dc98 100644
--- a/src/Stripe.net/Services/Entitlements/Features/FeatureUpdateOptions.cs
+++ b/src/Stripe.net/Services/Entitlements/Features/FeatureUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Entitlements
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FeatureUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -11,6 +14,9 @@ public class FeatureUpdateOptions : BaseOptions, IHasMetadata
         /// features list endpoint.
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool? Active { get; set; }
 
         /// <summary>
@@ -18,12 +24,18 @@ public class FeatureUpdateOptions : BaseOptions, IHasMetadata
         /// additional information about the object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The feature's name, for your own purpose, not meant to be displayable to the customer.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/EphemeralKeys/EphemeralKeyCreateOptions.cs b/src/Stripe.net/Services/EphemeralKeys/EphemeralKeyCreateOptions.cs
index f9d861a5ac..d298ece32c 100644
--- a/src/Stripe.net/Services/EphemeralKeys/EphemeralKeyCreateOptions.cs
+++ b/src/Stripe.net/Services/EphemeralKeys/EphemeralKeyCreateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class EphemeralKeyCreateOptions : BaseOptions
     {
@@ -9,12 +12,18 @@ public class EphemeralKeyCreateOptions : BaseOptions
         /// The ID of the Customer you'd like to modify using the resulting ephemeral key.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
         /// The ID of the Issuing Card you'd like to access using the resulting ephemeral key.
         /// </summary>
         [JsonProperty("issuing_card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuing_card")]
+#endif
         public string IssuingCard { get; set; }
 
         /// <summary>
@@ -22,9 +31,15 @@ public class EphemeralKeyCreateOptions : BaseOptions
         /// Cards without exchanging sensitive information.
         /// </summary>
         [JsonProperty("nonce")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("nonce")]
+#endif
         public string Nonce { get; set; }
 
         [JsonIgnore]
+#if NET6_0_OR_GREATER
+        [STJS.JsonIgnore]
+#endif
         public string StripeVersion { get; set; }
 
         /// <summary>
@@ -32,6 +47,9 @@ public class EphemeralKeyCreateOptions : BaseOptions
         /// ephemeral key.
         /// </summary>
         [JsonProperty("verification_session")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification_session")]
+#endif
         public string VerificationSession { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Events/EventListOptions.cs b/src/Stripe.net/Services/Events/EventListOptions.cs
index 1b14c98501..4760de5684 100644
--- a/src/Stripe.net/Services/Events/EventListOptions.cs
+++ b/src/Stripe.net/Services/Events/EventListOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class EventListOptions : ListOptionsWithCreated
     {
@@ -12,6 +15,9 @@ public class EventListOptions : ListOptionsWithCreated
         /// be returned.
         /// </summary>
         [JsonProperty("delivery_success")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("delivery_success")]
+#endif
         public bool? DeliverySuccess { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class EventListOptions : ListOptionsWithCreated
         /// list will be filtered to include only events with a matching event property.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class EventListOptions : ListOptionsWithCreated
         /// or <c>types</c>, but not both.
         /// </summary>
         [JsonProperty("types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("types")]
+#endif
         public List<string> Types { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Events/EventService.cs b/src/Stripe.net/Services/Events/EventService.cs
index 4cb2451f37..b2244b717a 100644
--- a/src/Stripe.net/Services/Events/EventService.cs
+++ b/src/Stripe.net/Services/Events/EventService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class EventService : Service<Event>,
+    public class EventService : Service,
         IListable<Event, EventListOptions>,
         IRetrievable<Event, EventGetOptions>
     {
diff --git a/src/Stripe.net/Services/FileLinks/FileLinkCreateOptions.cs b/src/Stripe.net/Services/FileLinks/FileLinkCreateOptions.cs
index d43782dfec..ba83b471ef 100644
--- a/src/Stripe.net/Services/FileLinks/FileLinkCreateOptions.cs
+++ b/src/Stripe.net/Services/FileLinks/FileLinkCreateOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FileLinkCreateOptions : BaseOptions, IHasMetadata
     {
@@ -13,6 +16,10 @@ public class FileLinkCreateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpiresAt { get; set; }
 
         /// <summary>
@@ -24,6 +31,9 @@ public class FileLinkCreateOptions : BaseOptions, IHasMetadata
         /// <c>tax_document_user_upload</c>, or <c>terminal_reader_splashscreen</c>.
         /// </summary>
         [JsonProperty("file")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("file")]
+#endif
         public string File { get; set; }
 
         /// <summary>
@@ -33,6 +43,9 @@ public class FileLinkCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/FileLinks/FileLinkListOptions.cs b/src/Stripe.net/Services/FileLinks/FileLinkListOptions.cs
index eef4a07003..621b75db44 100644
--- a/src/Stripe.net/Services/FileLinks/FileLinkListOptions.cs
+++ b/src/Stripe.net/Services/FileLinks/FileLinkListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FileLinkListOptions : ListOptionsWithCreated
     {
@@ -9,12 +12,18 @@ public class FileLinkListOptions : ListOptionsWithCreated
         /// Filter links by their expiration status. By default, Stripe returns all links.
         /// </summary>
         [JsonProperty("expired")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expired")]
+#endif
         public bool? Expired { get; set; }
 
         /// <summary>
         /// Only return links for the given file.
         /// </summary>
         [JsonProperty("file")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("file")]
+#endif
         public string File { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/FileLinks/FileLinkService.cs b/src/Stripe.net/Services/FileLinks/FileLinkService.cs
index d77ea1680c..00a765e223 100644
--- a/src/Stripe.net/Services/FileLinks/FileLinkService.cs
+++ b/src/Stripe.net/Services/FileLinks/FileLinkService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class FileLinkService : Service<FileLink>,
+    public class FileLinkService : Service,
         ICreatable<FileLink, FileLinkCreateOptions>,
         IListable<FileLink, FileLinkListOptions>,
         IRetrievable<FileLink, FileLinkGetOptions>,
diff --git a/src/Stripe.net/Services/FileLinks/FileLinkUpdateOptions.cs b/src/Stripe.net/Services/FileLinks/FileLinkUpdateOptions.cs
index 639c1f8ce3..f830e191af 100644
--- a/src/Stripe.net/Services/FileLinks/FileLinkUpdateOptions.cs
+++ b/src/Stripe.net/Services/FileLinks/FileLinkUpdateOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FileLinkUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -14,6 +17,10 @@ public class FileLinkUpdateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpiresAt { get; set; }
 
         /// <summary>
@@ -23,6 +30,9 @@ public class FileLinkUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Files/FileCreateOptions.cs b/src/Stripe.net/Services/Files/FileCreateOptions.cs
index 5e5c862c33..10444aba4b 100644
--- a/src/Stripe.net/Services/Files/FileCreateOptions.cs
+++ b/src/Stripe.net/Services/Files/FileCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.IO;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FileCreateOptions : BaseOptions
     {
@@ -11,6 +14,9 @@ public class FileCreateOptions : BaseOptions
         /// transfers for the <c>multipart/form-data</c> protocol.
         /// </summary>
         [JsonProperty("file")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("file")]
+#endif
         public Stream File { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class FileCreateOptions : BaseOptions
         /// href="https://stripe.com/docs/api#file_links">file link</a> for the newly created file.
         /// </summary>
         [JsonProperty("file_link_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("file_link_data")]
+#endif
         public FileFileLinkDataOptions FileLinkData { get; set; }
 
         /// <summary>
@@ -30,6 +39,9 @@ public class FileCreateOptions : BaseOptions
         /// <c>terminal_reader_splashscreen</c>.
         /// </summary>
         [JsonProperty("purpose")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("purpose")]
+#endif
         public string Purpose { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Files/FileFileLinkDataOptions.cs b/src/Stripe.net/Services/Files/FileFileLinkDataOptions.cs
index 5e0457fd05..154425007e 100644
--- a/src/Stripe.net/Services/Files/FileFileLinkDataOptions.cs
+++ b/src/Stripe.net/Services/Files/FileFileLinkDataOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FileFileLinkDataOptions : INestedOptions, IHasMetadata
     {
@@ -16,6 +19,9 @@ public class FileFileLinkDataOptions : INestedOptions, IHasMetadata
         /// <c>tax_document_user_upload</c>, or <c>terminal_reader_splashscreen</c>.
         /// </summary>
         [JsonProperty("create")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("create")]
+#endif
         public bool? Create { get; set; }
 
         /// <summary>
@@ -23,6 +29,10 @@ public class FileFileLinkDataOptions : INestedOptions, IHasMetadata
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpiresAt { get; set; }
 
         /// <summary>
@@ -32,6 +42,9 @@ public class FileFileLinkDataOptions : INestedOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Files/FileListOptions.cs b/src/Stripe.net/Services/Files/FileListOptions.cs
index c0b844bce4..882edd97dd 100644
--- a/src/Stripe.net/Services/Files/FileListOptions.cs
+++ b/src/Stripe.net/Services/Files/FileListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FileListOptions : ListOptionsWithCreated
     {
@@ -17,6 +20,9 @@ public class FileListOptions : ListOptionsWithCreated
         /// <c>tax_document_user_upload</c>, or <c>terminal_reader_splashscreen</c>.
         /// </summary>
         [JsonProperty("purpose")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("purpose")]
+#endif
         public string Purpose { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Files/FileService.cs b/src/Stripe.net/Services/Files/FileService.cs
index 62f5ea5d6d..706d61ccdd 100644
--- a/src/Stripe.net/Services/Files/FileService.cs
+++ b/src/Stripe.net/Services/Files/FileService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class FileService : Service<File>,
+    public class FileService : Service,
         ICreatable<File, FileCreateOptions>,
         IListable<File, FileListOptions>,
         IRetrievable<File, FileGetOptions>
diff --git a/src/Stripe.net/Services/FinancialConnections/AccountOwners/AccountOwnerListOptions.cs b/src/Stripe.net/Services/FinancialConnections/AccountOwners/AccountOwnerListOptions.cs
index 989c06a341..2921ba5a2a 100644
--- a/src/Stripe.net/Services/FinancialConnections/AccountOwners/AccountOwnerListOptions.cs
+++ b/src/Stripe.net/Services/FinancialConnections/AccountOwners/AccountOwnerListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.FinancialConnections
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountOwnerListOptions : ListOptions
     {
@@ -9,6 +12,9 @@ public class AccountOwnerListOptions : ListOptions
         /// The ID of the ownership object to fetch owners from.
         /// </summary>
         [JsonProperty("ownership")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ownership")]
+#endif
         public string Ownership { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/FinancialConnections/AccountOwners/AccountOwnerService.cs b/src/Stripe.net/Services/FinancialConnections/AccountOwners/AccountOwnerService.cs
index 5479f5c046..e6f0b99b18 100644
--- a/src/Stripe.net/Services/FinancialConnections/AccountOwners/AccountOwnerService.cs
+++ b/src/Stripe.net/Services/FinancialConnections/AccountOwners/AccountOwnerService.cs
@@ -8,7 +8,7 @@ namespace Stripe.FinancialConnections
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class AccountOwnerService : ServiceNested<AccountOwner>,
+    public class AccountOwnerService : Service,
         INestedListable<AccountOwner, AccountOwnerListOptions>
     {
         public AccountOwnerService()
diff --git a/src/Stripe.net/Services/FinancialConnections/Accounts/AccountAccountHolderOptions.cs b/src/Stripe.net/Services/FinancialConnections/Accounts/AccountAccountHolderOptions.cs
index 15961bd0f6..2ab372fa4e 100644
--- a/src/Stripe.net/Services/FinancialConnections/Accounts/AccountAccountHolderOptions.cs
+++ b/src/Stripe.net/Services/FinancialConnections/Accounts/AccountAccountHolderOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.FinancialConnections
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountAccountHolderOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class AccountAccountHolderOptions : INestedOptions
         /// The ID of the Stripe account whose accounts will be retrieved.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public string Account { get; set; }
 
         /// <summary>
         /// The ID of the Stripe customer whose accounts will be retrieved.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/FinancialConnections/Accounts/AccountListOptions.cs b/src/Stripe.net/Services/FinancialConnections/Accounts/AccountListOptions.cs
index 4c00de9a31..c03f417a83 100644
--- a/src/Stripe.net/Services/FinancialConnections/Accounts/AccountListOptions.cs
+++ b/src/Stripe.net/Services/FinancialConnections/Accounts/AccountListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.FinancialConnections
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountListOptions : ListOptions
     {
@@ -11,12 +14,18 @@ public class AccountListOptions : ListOptions
         /// exclusive.
         /// </summary>
         [JsonProperty("account_holder")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder")]
+#endif
         public AccountAccountHolderOptions AccountHolder { get; set; }
 
         /// <summary>
         /// If present, only return accounts that were collected as part of the given session.
         /// </summary>
         [JsonProperty("session")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("session")]
+#endif
         public string Session { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/FinancialConnections/Accounts/AccountRefreshOptions.cs b/src/Stripe.net/Services/FinancialConnections/Accounts/AccountRefreshOptions.cs
index 56c0211fd2..3c965638d7 100644
--- a/src/Stripe.net/Services/FinancialConnections/Accounts/AccountRefreshOptions.cs
+++ b/src/Stripe.net/Services/FinancialConnections/Accounts/AccountRefreshOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.FinancialConnections
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountRefreshOptions : BaseOptions
     {
@@ -11,6 +14,9 @@ public class AccountRefreshOptions : BaseOptions
         /// One of: <c>balance</c>, <c>ownership</c>, or <c>transactions</c>.
         /// </summary>
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public List<string> Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/FinancialConnections/Accounts/AccountService.cs b/src/Stripe.net/Services/FinancialConnections/Accounts/AccountService.cs
index 146358f386..d103902ecc 100644
--- a/src/Stripe.net/Services/FinancialConnections/Accounts/AccountService.cs
+++ b/src/Stripe.net/Services/FinancialConnections/Accounts/AccountService.cs
@@ -8,7 +8,7 @@ namespace Stripe.FinancialConnections
     using System.Threading;
     using System.Threading.Tasks;
 
-    public partial class AccountService : Service<Account>,
+    public partial class AccountService : Service,
         IListable<Account, AccountListOptions>,
         IRetrievable<Account, AccountGetOptions>
     {
diff --git a/src/Stripe.net/Services/FinancialConnections/Accounts/AccountSubscribeOptions.cs b/src/Stripe.net/Services/FinancialConnections/Accounts/AccountSubscribeOptions.cs
index d6742f31b1..d88b554791 100644
--- a/src/Stripe.net/Services/FinancialConnections/Accounts/AccountSubscribeOptions.cs
+++ b/src/Stripe.net/Services/FinancialConnections/Accounts/AccountSubscribeOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.FinancialConnections
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountSubscribeOptions : BaseOptions
     {
@@ -10,6 +13,9 @@ public class AccountSubscribeOptions : BaseOptions
         /// The list of account features to which you would like to subscribe.
         /// </summary>
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public List<string> Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/FinancialConnections/Accounts/AccountUnsubscribeOptions.cs b/src/Stripe.net/Services/FinancialConnections/Accounts/AccountUnsubscribeOptions.cs
index cf6be4a41c..f180094348 100644
--- a/src/Stripe.net/Services/FinancialConnections/Accounts/AccountUnsubscribeOptions.cs
+++ b/src/Stripe.net/Services/FinancialConnections/Accounts/AccountUnsubscribeOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.FinancialConnections
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AccountUnsubscribeOptions : BaseOptions
     {
@@ -10,6 +13,9 @@ public class AccountUnsubscribeOptions : BaseOptions
         /// The list of account features from which you would like to unsubscribe.
         /// </summary>
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public List<string> Features { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/FinancialConnections/Sessions/SessionAccountHolderOptions.cs b/src/Stripe.net/Services/FinancialConnections/Sessions/SessionAccountHolderOptions.cs
index 6626bed201..dad23c3bd5 100644
--- a/src/Stripe.net/Services/FinancialConnections/Sessions/SessionAccountHolderOptions.cs
+++ b/src/Stripe.net/Services/FinancialConnections/Sessions/SessionAccountHolderOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.FinancialConnections
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionAccountHolderOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SessionAccountHolderOptions : INestedOptions
         /// <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public string Account { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class SessionAccountHolderOptions : INestedOptions
         /// if <c>type</c> is <c>customer</c>.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class SessionAccountHolderOptions : INestedOptions
         /// One of: <c>account</c>, or <c>customer</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/FinancialConnections/Sessions/SessionCreateOptions.cs b/src/Stripe.net/Services/FinancialConnections/Sessions/SessionCreateOptions.cs
index 812d9b598f..add8eb8a85 100644
--- a/src/Stripe.net/Services/FinancialConnections/Sessions/SessionCreateOptions.cs
+++ b/src/Stripe.net/Services/FinancialConnections/Sessions/SessionCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.FinancialConnections
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionCreateOptions : BaseOptions
     {
@@ -10,12 +13,18 @@ public class SessionCreateOptions : BaseOptions
         /// The account holder to link accounts for.
         /// </summary>
         [JsonProperty("account_holder")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder")]
+#endif
         public SessionAccountHolderOptions AccountHolder { get; set; }
 
         /// <summary>
         /// Filters to restrict the kinds of accounts to collect.
         /// </summary>
         [JsonProperty("filters")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("filters")]
+#endif
         public SessionFiltersOptions Filters { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class SessionCreateOptions : BaseOptions
         /// <c>transactions</c>.
         /// </summary>
         [JsonProperty("permissions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("permissions")]
+#endif
         public List<string> Permissions { get; set; }
 
         /// <summary>
@@ -34,6 +46,9 @@ public class SessionCreateOptions : BaseOptions
         /// One of: <c>balances</c>, <c>ownership</c>, or <c>transactions</c>.
         /// </summary>
         [JsonProperty("prefetch")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("prefetch")]
+#endif
         public List<string> Prefetch { get; set; }
 
         /// <summary>
@@ -41,6 +56,9 @@ public class SessionCreateOptions : BaseOptions
         /// user will be redirected to this URL to return to your app.
         /// </summary>
         [JsonProperty("return_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_url")]
+#endif
         public string ReturnUrl { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/FinancialConnections/Sessions/SessionFiltersOptions.cs b/src/Stripe.net/Services/FinancialConnections/Sessions/SessionFiltersOptions.cs
index 23c5d9d8c1..fb91729f93 100644
--- a/src/Stripe.net/Services/FinancialConnections/Sessions/SessionFiltersOptions.cs
+++ b/src/Stripe.net/Services/FinancialConnections/Sessions/SessionFiltersOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.FinancialConnections
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SessionFiltersOptions : INestedOptions
     {
@@ -14,12 +17,18 @@ public class SessionFiltersOptions : INestedOptions
         /// <c>savings</c>.
         /// </summary>
         [JsonProperty("account_subcategories")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_subcategories")]
+#endif
         public List<string> AccountSubcategories { get; set; }
 
         /// <summary>
         /// List of countries from which to collect accounts.
         /// </summary>
         [JsonProperty("countries")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("countries")]
+#endif
         public List<string> Countries { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/FinancialConnections/Sessions/SessionService.cs b/src/Stripe.net/Services/FinancialConnections/Sessions/SessionService.cs
index 587341a32b..7ff4c9e043 100644
--- a/src/Stripe.net/Services/FinancialConnections/Sessions/SessionService.cs
+++ b/src/Stripe.net/Services/FinancialConnections/Sessions/SessionService.cs
@@ -7,7 +7,7 @@ namespace Stripe.FinancialConnections
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class SessionService : Service<Session>,
+    public class SessionService : Service,
         ICreatable<Session, SessionCreateOptions>,
         IRetrievable<Session, SessionGetOptions>
     {
diff --git a/src/Stripe.net/Services/FinancialConnections/Transactions/TransactionListOptions.cs b/src/Stripe.net/Services/FinancialConnections/Transactions/TransactionListOptions.cs
index b94d13a824..f335cf09e5 100644
--- a/src/Stripe.net/Services/FinancialConnections/Transactions/TransactionListOptions.cs
+++ b/src/Stripe.net/Services/FinancialConnections/Transactions/TransactionListOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe.FinancialConnections
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionListOptions : ListOptions
     {
@@ -11,6 +14,9 @@ public class TransactionListOptions : ListOptions
         /// The ID of the Financial Connections Account whose transactions will be retrieved.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public string Account { get; set; }
 
         /// <summary>
@@ -20,6 +26,10 @@ public class TransactionListOptions : ListOptions
         /// </summary>
         [JsonProperty("transacted_at")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transacted_at")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, DateRangeOptions> TransactedAt { get; set; }
 
         /// <summary>
@@ -27,6 +37,9 @@ public class TransactionListOptions : ListOptions
         /// be a dictionary with the following options:.
         /// </summary>
         [JsonProperty("transaction_refresh")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_refresh")]
+#endif
         public TransactionTransactionRefreshOptions TransactionRefresh { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/FinancialConnections/Transactions/TransactionService.cs b/src/Stripe.net/Services/FinancialConnections/Transactions/TransactionService.cs
index fefced8b7d..a3e7d49094 100644
--- a/src/Stripe.net/Services/FinancialConnections/Transactions/TransactionService.cs
+++ b/src/Stripe.net/Services/FinancialConnections/Transactions/TransactionService.cs
@@ -8,7 +8,7 @@ namespace Stripe.FinancialConnections
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class TransactionService : Service<Transaction>,
+    public class TransactionService : Service,
         IListable<Transaction, TransactionListOptions>,
         IRetrievable<Transaction, TransactionGetOptions>
     {
diff --git a/src/Stripe.net/Services/FinancialConnections/Transactions/TransactionTransactionRefreshOptions.cs b/src/Stripe.net/Services/FinancialConnections/Transactions/TransactionTransactionRefreshOptions.cs
index 6d61ee542c..32ee1cad36 100644
--- a/src/Stripe.net/Services/FinancialConnections/Transactions/TransactionTransactionRefreshOptions.cs
+++ b/src/Stripe.net/Services/FinancialConnections/Transactions/TransactionTransactionRefreshOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.FinancialConnections
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionTransactionRefreshOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class TransactionTransactionRefreshOptions : INestedOptions
         /// place after this refresh (non-inclusive).
         /// </summary>
         [JsonProperty("after")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("after")]
+#endif
         public string After { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Forwarding/Requests/RequestCreateOptions.cs b/src/Stripe.net/Services/Forwarding/Requests/RequestCreateOptions.cs
index 1fbfcdbb98..2895ced1cf 100644
--- a/src/Stripe.net/Services/Forwarding/Requests/RequestCreateOptions.cs
+++ b/src/Stripe.net/Services/Forwarding/Requests/RequestCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Forwarding
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RequestCreateOptions : BaseOptions, IHasMetadata
     {
@@ -13,6 +16,9 @@ public class RequestCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class RequestCreateOptions : BaseOptions, IHasMetadata
         /// PaymentMethods is allowed.
         /// </summary>
         [JsonProperty("payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method")]
+#endif
         public string PaymentMethod { get; set; }
 
         /// <summary>
@@ -28,18 +37,27 @@ public class RequestCreateOptions : BaseOptions, IHasMetadata
         /// or <c>request_signature</c>.
         /// </summary>
         [JsonProperty("replacements")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("replacements")]
+#endif
         public List<string> Replacements { get; set; }
 
         /// <summary>
         /// The request body and headers to be sent to the destination endpoint.
         /// </summary>
         [JsonProperty("request")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request")]
+#endif
         public RequestRequestOptions Request { get; set; }
 
         /// <summary>
         /// The destination URL for the forwarded request. Must be supported by the config.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Forwarding/Requests/RequestRequestHeaderOptions.cs b/src/Stripe.net/Services/Forwarding/Requests/RequestRequestHeaderOptions.cs
index 73a42a8f07..bcbace435b 100644
--- a/src/Stripe.net/Services/Forwarding/Requests/RequestRequestHeaderOptions.cs
+++ b/src/Stripe.net/Services/Forwarding/Requests/RequestRequestHeaderOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Forwarding
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RequestRequestHeaderOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class RequestRequestHeaderOptions : INestedOptions
         /// The header name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// The header value.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Forwarding/Requests/RequestRequestOptions.cs b/src/Stripe.net/Services/Forwarding/Requests/RequestRequestOptions.cs
index 65a7a4b5fb..ed5b39ee17 100644
--- a/src/Stripe.net/Services/Forwarding/Requests/RequestRequestOptions.cs
+++ b/src/Stripe.net/Services/Forwarding/Requests/RequestRequestOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Forwarding
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RequestRequestOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RequestRequestOptions : INestedOptions
         /// The body payload to send to the destination endpoint.
         /// </summary>
         [JsonProperty("body")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("body")]
+#endif
         public string Body { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class RequestRequestOptions : INestedOptions
         /// (excluding Stripe-generated ones such as the Content-Type header) should be included.
         /// </summary>
         [JsonProperty("headers")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("headers")]
+#endif
         public List<RequestRequestHeaderOptions> Headers { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Forwarding/Requests/RequestService.cs b/src/Stripe.net/Services/Forwarding/Requests/RequestService.cs
index 349fea0455..3f1dcd1ab0 100644
--- a/src/Stripe.net/Services/Forwarding/Requests/RequestService.cs
+++ b/src/Stripe.net/Services/Forwarding/Requests/RequestService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Forwarding
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class RequestService : Service<Request>,
+    public class RequestService : Service,
         ICreatable<Request, RequestCreateOptions>,
         IListable<Request, RequestListOptions>,
         IRetrievable<Request, RequestGetOptions>
diff --git a/src/Stripe.net/Services/Identity/VerificationReports/VerificationReportListOptions.cs b/src/Stripe.net/Services/Identity/VerificationReports/VerificationReportListOptions.cs
index 32e8cee70d..43de94792b 100644
--- a/src/Stripe.net/Services/Identity/VerificationReports/VerificationReportListOptions.cs
+++ b/src/Stripe.net/Services/Identity/VerificationReports/VerificationReportListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Identity
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationReportListOptions : ListOptionsWithCreated
     {
@@ -10,6 +13,9 @@ public class VerificationReportListOptions : ListOptionsWithCreated
         /// and can be used to reconcile this verification with your internal systems.
         /// </summary>
         [JsonProperty("client_reference_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("client_reference_id")]
+#endif
         public string ClientReferenceId { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class VerificationReportListOptions : ListOptionsWithCreated
         /// One of: <c>document</c>, or <c>id_number</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class VerificationReportListOptions : ListOptionsWithCreated
         /// provide a VerificationIntent ID.
         /// </summary>
         [JsonProperty("verification_session")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification_session")]
+#endif
         public string VerificationSession { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Identity/VerificationReports/VerificationReportService.cs b/src/Stripe.net/Services/Identity/VerificationReports/VerificationReportService.cs
index c470fc06c4..65c79dfa57 100644
--- a/src/Stripe.net/Services/Identity/VerificationReports/VerificationReportService.cs
+++ b/src/Stripe.net/Services/Identity/VerificationReports/VerificationReportService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Identity
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class VerificationReportService : Service<VerificationReport>,
+    public class VerificationReportService : Service,
         IListable<VerificationReport, VerificationReportListOptions>,
         IRetrievable<VerificationReport, VerificationReportGetOptions>
     {
diff --git a/src/Stripe.net/Services/Identity/VerificationSessions/VerificationSessionCreateOptions.cs b/src/Stripe.net/Services/Identity/VerificationSessions/VerificationSessionCreateOptions.cs
index 0d2e04ba1b..8cf5cea8fa 100644
--- a/src/Stripe.net/Services/Identity/VerificationSessions/VerificationSessionCreateOptions.cs
+++ b/src/Stripe.net/Services/Identity/VerificationSessions/VerificationSessionCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Identity
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationSessionCreateOptions : BaseOptions, IHasMetadata
     {
@@ -11,6 +14,9 @@ public class VerificationSessionCreateOptions : BaseOptions, IHasMetadata
         /// and can be used to reconcile this verification with your internal systems.
         /// </summary>
         [JsonProperty("client_reference_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("client_reference_id")]
+#endif
         public string ClientReferenceId { get; set; }
 
         /// <summary>
@@ -20,30 +26,45 @@ public class VerificationSessionCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// A set of options for the session’s verification checks.
         /// </summary>
         [JsonProperty("options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("options")]
+#endif
         public VerificationSessionOptionsOptions Options { get; set; }
 
         /// <summary>
         /// Details provided about the user being verified. These details may be shown to the user.
         /// </summary>
         [JsonProperty("provided_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("provided_details")]
+#endif
         public VerificationSessionProvidedDetailsOptions ProvidedDetails { get; set; }
 
         /// <summary>
         /// Token referencing a Customer resource.
         /// </summary>
         [JsonProperty("related_customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("related_customer")]
+#endif
         public string RelatedCustomer { get; set; }
 
         /// <summary>
         /// The URL that the user will be redirected to upon completing the verification flow.
         /// </summary>
         [JsonProperty("return_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_url")]
+#endif
         public string ReturnUrl { get; set; }
 
         /// <summary>
@@ -53,6 +74,9 @@ public class VerificationSessionCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>document</c>, or <c>id_number</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
@@ -60,6 +84,9 @@ public class VerificationSessionCreateOptions : BaseOptions, IHasMetadata
         /// https://docs.stripe.com/identity/verification-flows.
         /// </summary>
         [JsonProperty("verification_flow")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification_flow")]
+#endif
         public string VerificationFlow { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Identity/VerificationSessions/VerificationSessionListOptions.cs b/src/Stripe.net/Services/Identity/VerificationSessions/VerificationSessionListOptions.cs
index db1236a310..267fc2e6a8 100644
--- a/src/Stripe.net/Services/Identity/VerificationSessions/VerificationSessionListOptions.cs
+++ b/src/Stripe.net/Services/Identity/VerificationSessions/VerificationSessionListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Identity
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationSessionListOptions : ListOptionsWithCreated
     {
@@ -10,9 +13,15 @@ public class VerificationSessionListOptions : ListOptionsWithCreated
         /// and can be used to reconcile this verification with your internal systems.
         /// </summary>
         [JsonProperty("client_reference_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("client_reference_id")]
+#endif
         public string ClientReferenceId { get; set; }
 
         [JsonProperty("related_customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("related_customer")]
+#endif
         public string RelatedCustomer { get; set; }
 
         /// <summary>
@@ -22,6 +31,9 @@ public class VerificationSessionListOptions : ListOptionsWithCreated
         /// One of: <c>canceled</c>, <c>processing</c>, <c>requires_input</c>, or <c>verified</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Identity/VerificationSessions/VerificationSessionOptionsDocumentOptions.cs b/src/Stripe.net/Services/Identity/VerificationSessions/VerificationSessionOptionsDocumentOptions.cs
index d6075f1a6f..a1ad94f4eb 100644
--- a/src/Stripe.net/Services/Identity/VerificationSessions/VerificationSessionOptionsDocumentOptions.cs
+++ b/src/Stripe.net/Services/Identity/VerificationSessions/VerificationSessionOptionsDocumentOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Identity
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationSessionOptionsDocumentOptions : INestedOptions
     {
@@ -13,6 +16,9 @@ public class VerificationSessionOptionsDocumentOptions : INestedOptions
         /// One of: <c>driving_license</c>, <c>id_card</c>, or <c>passport</c>.
         /// </summary>
         [JsonProperty("allowed_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allowed_types")]
+#endif
         public List<string> AllowedTypes { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class VerificationSessionOptionsDocumentOptions : INestedOptions
         /// check</a> with the document’s extracted name and date of birth.
         /// </summary>
         [JsonProperty("require_id_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("require_id_number")]
+#endif
         public bool? RequireIdNumber { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class VerificationSessionOptionsDocumentOptions : INestedOptions
         /// camera.
         /// </summary>
         [JsonProperty("require_live_capture")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("require_live_capture")]
+#endif
         public bool? RequireLiveCapture { get; set; }
 
         /// <summary>
@@ -37,6 +49,9 @@ public class VerificationSessionOptionsDocumentOptions : INestedOptions
         /// href="https://stripe.com/docs/identity/selfie">Learn more</a>.
         /// </summary>
         [JsonProperty("require_matching_selfie")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("require_matching_selfie")]
+#endif
         public bool? RequireMatchingSelfie { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Identity/VerificationSessions/VerificationSessionOptionsOptions.cs b/src/Stripe.net/Services/Identity/VerificationSessions/VerificationSessionOptionsOptions.cs
index 65faa548c0..f6d7f02da0 100644
--- a/src/Stripe.net/Services/Identity/VerificationSessions/VerificationSessionOptionsOptions.cs
+++ b/src/Stripe.net/Services/Identity/VerificationSessions/VerificationSessionOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Identity
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationSessionOptionsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class VerificationSessionOptionsOptions : INestedOptions
         /// check</a>.
         /// </summary>
         [JsonProperty("document")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("document")]
+#endif
         public VerificationSessionOptionsDocumentOptions Document { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Identity/VerificationSessions/VerificationSessionProvidedDetailsOptions.cs b/src/Stripe.net/Services/Identity/VerificationSessions/VerificationSessionProvidedDetailsOptions.cs
index eb4423118c..766361f966 100644
--- a/src/Stripe.net/Services/Identity/VerificationSessions/VerificationSessionProvidedDetailsOptions.cs
+++ b/src/Stripe.net/Services/Identity/VerificationSessions/VerificationSessionProvidedDetailsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Identity
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationSessionProvidedDetailsOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class VerificationSessionProvidedDetailsOptions : INestedOptions
         /// Email of user being verified.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// Phone number of user being verified.
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Identity/VerificationSessions/VerificationSessionService.cs b/src/Stripe.net/Services/Identity/VerificationSessions/VerificationSessionService.cs
index 4bb30d7cdf..f93166fc8d 100644
--- a/src/Stripe.net/Services/Identity/VerificationSessions/VerificationSessionService.cs
+++ b/src/Stripe.net/Services/Identity/VerificationSessions/VerificationSessionService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Identity
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class VerificationSessionService : Service<VerificationSession>,
+    public class VerificationSessionService : Service,
         ICreatable<VerificationSession, VerificationSessionCreateOptions>,
         IListable<VerificationSession, VerificationSessionListOptions>,
         IRetrievable<VerificationSession, VerificationSessionGetOptions>,
diff --git a/src/Stripe.net/Services/Identity/VerificationSessions/VerificationSessionUpdateOptions.cs b/src/Stripe.net/Services/Identity/VerificationSessions/VerificationSessionUpdateOptions.cs
index 7e4d2d7c38..209dc1751b 100644
--- a/src/Stripe.net/Services/Identity/VerificationSessions/VerificationSessionUpdateOptions.cs
+++ b/src/Stripe.net/Services/Identity/VerificationSessions/VerificationSessionUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Identity
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class VerificationSessionUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -13,18 +16,27 @@ public class VerificationSessionUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// A set of options for the session’s verification checks.
         /// </summary>
         [JsonProperty("options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("options")]
+#endif
         public VerificationSessionOptionsOptions Options { get; set; }
 
         /// <summary>
         /// Details provided about the user being verified. These details may be shown to the user.
         /// </summary>
         [JsonProperty("provided_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("provided_details")]
+#endif
         public VerificationSessionProvidedDetailsOptions ProvidedDetails { get; set; }
 
         /// <summary>
@@ -33,6 +45,9 @@ public class VerificationSessionUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>document</c>, or <c>id_number</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/InvoiceItems/InvoiceItemCreateOptions.cs b/src/Stripe.net/Services/InvoiceItems/InvoiceItemCreateOptions.cs
index cfd69eda63..b4cac85130 100644
--- a/src/Stripe.net/Services/InvoiceItems/InvoiceItemCreateOptions.cs
+++ b/src/Stripe.net/Services/InvoiceItems/InvoiceItemCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceItemCreateOptions : BaseOptions, IHasMetadata
     {
@@ -12,6 +15,9 @@ public class InvoiceItemCreateOptions : BaseOptions, IHasMetadata
         /// on the invoice.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -20,12 +26,18 @@ public class InvoiceItemCreateOptions : BaseOptions, IHasMetadata
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// The ID of the customer who will be billed when this invoice item is billed.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
@@ -33,6 +45,9 @@ public class InvoiceItemCreateOptions : BaseOptions, IHasMetadata
         /// displayed in the invoice for easy tracking.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -40,6 +55,9 @@ public class InvoiceItemCreateOptions : BaseOptions, IHasMetadata
         /// or negative invoice items, and true for all other invoice items.
         /// </summary>
         [JsonProperty("discountable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discountable")]
+#endif
         public bool? Discountable { get; set; }
 
         /// <summary>
@@ -47,6 +65,9 @@ public class InvoiceItemCreateOptions : BaseOptions, IHasMetadata
         /// line item.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<InvoiceItemDiscountOptions> Discounts { get; set; }
 
         /// <summary>
@@ -56,6 +77,9 @@ public class InvoiceItemCreateOptions : BaseOptions, IHasMetadata
         /// to draft invoices and there is a maximum of 250 items per invoice.
         /// </summary>
         [JsonProperty("invoice")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice")]
+#endif
         public string Invoice { get; set; }
 
         /// <summary>
@@ -65,6 +89,9 @@ public class InvoiceItemCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -76,12 +103,18 @@ public class InvoiceItemCreateOptions : BaseOptions, IHasMetadata
         /// Recognition documentation</a> for details.
         /// </summary>
         [JsonProperty("period")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("period")]
+#endif
         public InvoiceItemPeriodOptions Period { get; set; }
 
         /// <summary>
         /// The ID of the price object. One of <c>price</c> or <c>price_data</c> is required.
         /// </summary>
         [JsonProperty("price")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price")]
+#endif
         public string Price { get; set; }
 
         /// <summary>
@@ -89,12 +122,18 @@ public class InvoiceItemCreateOptions : BaseOptions, IHasMetadata
         /// object inline. One of <c>price</c> or <c>price_data</c> is required.
         /// </summary>
         [JsonProperty("price_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price_data")]
+#endif
         public InvoiceItemPriceDataOptions PriceData { get; set; }
 
         /// <summary>
         /// Non-negative integer. The quantity of units for the invoice item.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         /// <summary>
@@ -105,6 +144,9 @@ public class InvoiceItemCreateOptions : BaseOptions, IHasMetadata
         /// of a particular subscription.
         /// </summary>
         [JsonProperty("subscription")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription")]
+#endif
         public string Subscription { get; set; }
 
         /// <summary>
@@ -117,12 +159,18 @@ public class InvoiceItemCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
         /// A <a href="https://stripe.com/docs/tax/tax-categories">tax code</a> ID.
         /// </summary>
         [JsonProperty("tax_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_code")]
+#endif
         public string TaxCode { get; set; }
 
         /// <summary>
@@ -130,6 +178,9 @@ public class InvoiceItemCreateOptions : BaseOptions, IHasMetadata
         /// the invoice do not apply to this invoice item.
         /// </summary>
         [JsonProperty("tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rates")]
+#endif
         public List<string> TaxRates { get; set; }
 
         /// <summary>
@@ -139,6 +190,9 @@ public class InvoiceItemCreateOptions : BaseOptions, IHasMetadata
         /// <c>amount_due</c> on the invoice.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
@@ -147,6 +201,9 @@ public class InvoiceItemCreateOptions : BaseOptions, IHasMetadata
         /// <c>unit_amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/InvoiceItems/InvoiceItemDiscountOptions.cs b/src/Stripe.net/Services/InvoiceItems/InvoiceItemDiscountOptions.cs
index 8e404fd572..3eff636e2a 100644
--- a/src/Stripe.net/Services/InvoiceItems/InvoiceItemDiscountOptions.cs
+++ b/src/Stripe.net/Services/InvoiceItems/InvoiceItemDiscountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceItemDiscountOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class InvoiceItemDiscountOptions : INestedOptions
         /// ID of the coupon to create a new discount for.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
         /// ID of an existing discount on the object (or one of its ancestors) to reuse.
         /// </summary>
         [JsonProperty("discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+#endif
         public string Discount { get; set; }
 
         /// <summary>
         /// ID of the promotion code to create a new discount for.
         /// </summary>
         [JsonProperty("promotion_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotion_code")]
+#endif
         public string PromotionCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/InvoiceItems/InvoiceItemListOptions.cs b/src/Stripe.net/Services/InvoiceItems/InvoiceItemListOptions.cs
index 9bffbf1df2..369620fa40 100644
--- a/src/Stripe.net/Services/InvoiceItems/InvoiceItemListOptions.cs
+++ b/src/Stripe.net/Services/InvoiceItems/InvoiceItemListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceItemListOptions : ListOptionsWithCreated
     {
@@ -10,6 +13,9 @@ public class InvoiceItemListOptions : ListOptionsWithCreated
         /// invoice items will be returned.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class InvoiceItemListOptions : ListOptionsWithCreated
         /// items will be returned. If specifying an invoice, no customer identifier is needed.
         /// </summary>
         [JsonProperty("invoice")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice")]
+#endif
         public string Invoice { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class InvoiceItemListOptions : ListOptionsWithCreated
         /// If unspecified, no filter is applied.
         /// </summary>
         [JsonProperty("pending")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pending")]
+#endif
         public bool? Pending { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/InvoiceItems/InvoiceItemPeriodOptions.cs b/src/Stripe.net/Services/InvoiceItems/InvoiceItemPeriodOptions.cs
index 4226e753d3..8911852463 100644
--- a/src/Stripe.net/Services/InvoiceItems/InvoiceItemPeriodOptions.cs
+++ b/src/Stripe.net/Services/InvoiceItems/InvoiceItemPeriodOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceItemPeriodOptions : INestedOptions
     {
@@ -13,6 +16,10 @@ public class InvoiceItemPeriodOptions : INestedOptions
         /// </summary>
         [JsonProperty("end")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? End { get; set; }
 
         /// <summary>
@@ -20,6 +27,10 @@ public class InvoiceItemPeriodOptions : INestedOptions
         /// </summary>
         [JsonProperty("start")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("start")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? Start { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/InvoiceItems/InvoiceItemPriceDataOptions.cs b/src/Stripe.net/Services/InvoiceItems/InvoiceItemPriceDataOptions.cs
index 9ea0d3f3ed..d6ff6cb3a6 100644
--- a/src/Stripe.net/Services/InvoiceItems/InvoiceItemPriceDataOptions.cs
+++ b/src/Stripe.net/Services/InvoiceItems/InvoiceItemPriceDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceItemPriceDataOptions : INestedOptions
     {
@@ -11,12 +14,18 @@ public class InvoiceItemPriceDataOptions : INestedOptions
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// The ID of the product that this price will belong to.
         /// </summary>
         [JsonProperty("product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product")]
+#endif
         public string Product { get; set; }
 
         /// <summary>
@@ -29,6 +38,9 @@ public class InvoiceItemPriceDataOptions : INestedOptions
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
@@ -36,6 +48,9 @@ public class InvoiceItemPriceDataOptions : INestedOptions
         /// how much to charge.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
@@ -44,6 +59,9 @@ public class InvoiceItemPriceDataOptions : INestedOptions
         /// <c>unit_amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/InvoiceItems/InvoiceItemService.cs b/src/Stripe.net/Services/InvoiceItems/InvoiceItemService.cs
index 36f0ee3a32..9acb2fe2f1 100644
--- a/src/Stripe.net/Services/InvoiceItems/InvoiceItemService.cs
+++ b/src/Stripe.net/Services/InvoiceItems/InvoiceItemService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class InvoiceItemService : Service<InvoiceItem>,
+    public class InvoiceItemService : Service,
         ICreatable<InvoiceItem, InvoiceItemCreateOptions>,
         IDeletable<InvoiceItem, InvoiceItemDeleteOptions>,
         IListable<InvoiceItem, InvoiceItemListOptions>,
diff --git a/src/Stripe.net/Services/InvoiceItems/InvoiceItemUpdateOptions.cs b/src/Stripe.net/Services/InvoiceItems/InvoiceItemUpdateOptions.cs
index 888e219e82..a8e171ed7f 100644
--- a/src/Stripe.net/Services/InvoiceItems/InvoiceItemUpdateOptions.cs
+++ b/src/Stripe.net/Services/InvoiceItems/InvoiceItemUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceItemUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -12,6 +15,9 @@ public class InvoiceItemUpdateOptions : BaseOptions, IHasMetadata
         /// negative amount.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class InvoiceItemUpdateOptions : BaseOptions, IHasMetadata
         /// displayed in the invoice for easy tracking.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class InvoiceItemUpdateOptions : BaseOptions, IHasMetadata
         /// for prorations.
         /// </summary>
         [JsonProperty("discountable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discountable")]
+#endif
         public bool? Discountable { get; set; }
 
         /// <summary>
@@ -35,6 +47,9 @@ public class InvoiceItemUpdateOptions : BaseOptions, IHasMetadata
         /// string to remove previously-defined discounts.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<InvoiceItemDiscountOptions> Discounts { get; set; }
 
         /// <summary>
@@ -44,6 +59,9 @@ public class InvoiceItemUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -55,12 +73,18 @@ public class InvoiceItemUpdateOptions : BaseOptions, IHasMetadata
         /// Recognition documentation</a> for details.
         /// </summary>
         [JsonProperty("period")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("period")]
+#endif
         public InvoiceItemPeriodOptions Period { get; set; }
 
         /// <summary>
         /// The ID of the price object. One of <c>price</c> or <c>price_data</c> is required.
         /// </summary>
         [JsonProperty("price")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price")]
+#endif
         public string Price { get; set; }
 
         /// <summary>
@@ -68,12 +92,18 @@ public class InvoiceItemUpdateOptions : BaseOptions, IHasMetadata
         /// object inline. One of <c>price</c> or <c>price_data</c> is required.
         /// </summary>
         [JsonProperty("price_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price_data")]
+#endif
         public InvoiceItemPriceDataOptions PriceData { get; set; }
 
         /// <summary>
         /// Non-negative integer. The quantity of units for the invoice item.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         /// <summary>
@@ -86,12 +116,18 @@ public class InvoiceItemUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
         /// A <a href="https://stripe.com/docs/tax/tax-categories">tax code</a> ID.
         /// </summary>
         [JsonProperty("tax_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_code")]
+#endif
         public string TaxCode { get; set; }
 
         /// <summary>
@@ -100,6 +136,9 @@ public class InvoiceItemUpdateOptions : BaseOptions, IHasMetadata
         /// previously-defined tax rates.
         /// </summary>
         [JsonProperty("tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rates")]
+#endif
         public List<string> TaxRates { get; set; }
 
         /// <summary>
@@ -109,6 +148,9 @@ public class InvoiceItemUpdateOptions : BaseOptions, IHasMetadata
         /// unit_amount.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
@@ -117,6 +159,9 @@ public class InvoiceItemUpdateOptions : BaseOptions, IHasMetadata
         /// <c>unit_amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemDiscountOptions.cs b/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemDiscountOptions.cs
index fabd6e5a3b..111122dfbf 100644
--- a/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemDiscountOptions.cs
+++ b/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemDiscountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceLineItemDiscountOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class InvoiceLineItemDiscountOptions : INestedOptions
         /// ID of the coupon to create a new discount for.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
         /// ID of an existing discount on the object (or one of its ancestors) to reuse.
         /// </summary>
         [JsonProperty("discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+#endif
         public string Discount { get; set; }
 
         /// <summary>
         /// ID of the promotion code to create a new discount for.
         /// </summary>
         [JsonProperty("promotion_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotion_code")]
+#endif
         public string PromotionCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemPeriodOptions.cs b/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemPeriodOptions.cs
index baaf13e180..98238fc450 100644
--- a/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemPeriodOptions.cs
+++ b/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemPeriodOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceLineItemPeriodOptions : INestedOptions
     {
@@ -13,6 +16,10 @@ public class InvoiceLineItemPeriodOptions : INestedOptions
         /// </summary>
         [JsonProperty("end")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? End { get; set; }
 
         /// <summary>
@@ -20,6 +27,10 @@ public class InvoiceLineItemPeriodOptions : INestedOptions
         /// </summary>
         [JsonProperty("start")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("start")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? Start { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemPriceDataOptions.cs b/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemPriceDataOptions.cs
index bb00d8ea85..53872b4991 100644
--- a/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemPriceDataOptions.cs
+++ b/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemPriceDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceLineItemPriceDataOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class InvoiceLineItemPriceDataOptions : INestedOptions
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class InvoiceLineItemPriceDataOptions : INestedOptions
         /// <c>product_data</c> is required.
         /// </summary>
         [JsonProperty("product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product")]
+#endif
         public string Product { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class InvoiceLineItemPriceDataOptions : INestedOptions
         /// <c>product_data</c> is required.
         /// </summary>
         [JsonProperty("product_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_data")]
+#endif
         public InvoiceLineItemPriceDataProductDataOptions ProductData { get; set; }
 
         /// <summary>
@@ -37,6 +49,9 @@ public class InvoiceLineItemPriceDataOptions : INestedOptions
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
@@ -44,6 +59,9 @@ public class InvoiceLineItemPriceDataOptions : INestedOptions
         /// One of <c>unit_amount</c> or <c>unit_amount_decimal</c> is required.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
@@ -52,6 +70,9 @@ public class InvoiceLineItemPriceDataOptions : INestedOptions
         /// <c>unit_amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemPriceDataProductDataOptions.cs b/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemPriceDataProductDataOptions.cs
index 950dfd0e6e..87a917559d 100644
--- a/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemPriceDataProductDataOptions.cs
+++ b/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemPriceDataProductDataOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceLineItemPriceDataProductDataOptions : INestedOptions, IHasMetadata
     {
@@ -12,6 +15,9 @@ public class InvoiceLineItemPriceDataProductDataOptions : INestedOptions, IHasMe
         /// rendering purposes.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class InvoiceLineItemPriceDataProductDataOptions : INestedOptions, IHasMe
         /// customer.
         /// </summary>
         [JsonProperty("images")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("images")]
+#endif
         public List<string> Images { get; set; }
 
         /// <summary>
@@ -28,18 +37,27 @@ public class InvoiceLineItemPriceDataProductDataOptions : INestedOptions, IHasMe
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The product's name, meant to be displayable to the customer.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// A <a href="https://stripe.com/docs/tax/tax-categories">tax code</a> ID.
         /// </summary>
         [JsonProperty("tax_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_code")]
+#endif
         public string TaxCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemService.cs b/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemService.cs
index 5ebf6494c7..49c2cb93f7 100644
--- a/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemService.cs
+++ b/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class InvoiceLineItemService : ServiceNested<InvoiceLineItem>,
+    public class InvoiceLineItemService : Service,
         INestedListable<InvoiceLineItem, InvoiceLineItemListOptions>,
         INestedUpdatable<InvoiceLineItem, InvoiceLineItemUpdateOptions>
     {
diff --git a/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemTaxAmountOptions.cs b/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemTaxAmountOptions.cs
index a554ad8632..7d668a5ec6 100644
--- a/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemTaxAmountOptions.cs
+++ b/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemTaxAmountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceLineItemTaxAmountOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class InvoiceLineItemTaxAmountOptions : INestedOptions
         /// The amount, in cents (or local equivalent), of the tax.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -21,12 +27,18 @@ public class InvoiceLineItemTaxAmountOptions : INestedOptions
         /// payments, or line items.
         /// </summary>
         [JsonProperty("tax_rate_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rate_data")]
+#endif
         public InvoiceLineItemTaxAmountTaxRateDataOptions TaxRateData { get; set; }
 
         /// <summary>
         /// The amount on which tax is calculated, in cents (or local equivalent).
         /// </summary>
         [JsonProperty("taxable_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxable_amount")]
+#endif
         public long? TaxableAmount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemTaxAmountTaxRateDataOptions.cs b/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemTaxAmountTaxRateDataOptions.cs
index 8ed28474d6..8ac630e2a7 100644
--- a/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemTaxAmountTaxRateDataOptions.cs
+++ b/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemTaxAmountTaxRateDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceLineItemTaxAmountTaxRateDataOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class InvoiceLineItemTaxAmountTaxRateDataOptions : INestedOptions
         /// 3166-1 alpha-2</a>).
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -17,18 +23,27 @@ public class InvoiceLineItemTaxAmountTaxRateDataOptions : INestedOptions
         /// visible to your customers.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// The display name of the tax rate, which will be shown to users.
         /// </summary>
         [JsonProperty("display_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_name")]
+#endif
         public string DisplayName { get; set; }
 
         /// <summary>
         /// This specifies if the tax rate is inclusive or exclusive.
         /// </summary>
         [JsonProperty("inclusive")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("inclusive")]
+#endif
         public bool? Inclusive { get; set; }
 
         /// <summary>
@@ -36,6 +51,9 @@ public class InvoiceLineItemTaxAmountTaxRateDataOptions : INestedOptions
         /// purposes. It also appears on your customer’s invoice.
         /// </summary>
         [JsonProperty("jurisdiction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("jurisdiction")]
+#endif
         public string Jurisdiction { get; set; }
 
         /// <summary>
@@ -45,6 +63,9 @@ public class InvoiceLineItemTaxAmountTaxRateDataOptions : INestedOptions
         /// <c>amount</c> of the tax is also zero.
         /// </summary>
         [JsonProperty("percentage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentage")]
+#endif
         public decimal? Percentage { get; set; }
 
         /// <summary>
@@ -52,6 +73,9 @@ public class InvoiceLineItemTaxAmountTaxRateDataOptions : INestedOptions
         /// without country prefix. For example, "NY" for New York, United States.
         /// </summary>
         [JsonProperty("state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("state")]
+#endif
         public string State { get; set; }
 
         /// <summary>
@@ -62,6 +86,9 @@ public class InvoiceLineItemTaxAmountTaxRateDataOptions : INestedOptions
         /// <c>vat</c>.
         /// </summary>
         [JsonProperty("tax_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_type")]
+#endif
         public string TaxType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemUpdateOptions.cs b/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemUpdateOptions.cs
index 3d65b0cd2f..546175b79a 100644
--- a/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemUpdateOptions.cs
+++ b/src/Stripe.net/Services/InvoiceLineItems/InvoiceLineItemUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceLineItemUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -12,6 +15,9 @@ public class InvoiceLineItemUpdateOptions : BaseOptions, IHasMetadata
         /// negative amount.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class InvoiceLineItemUpdateOptions : BaseOptions, IHasMetadata
         /// displayed in the invoice for easy tracking.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class InvoiceLineItemUpdateOptions : BaseOptions, IHasMetadata
         /// prorations.
         /// </summary>
         [JsonProperty("discountable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discountable")]
+#endif
         public bool? Discountable { get; set; }
 
         /// <summary>
@@ -35,6 +47,9 @@ public class InvoiceLineItemUpdateOptions : BaseOptions, IHasMetadata
         /// previously-defined discounts.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<InvoiceLineItemDiscountOptions> Discounts { get; set; }
 
         /// <summary>
@@ -49,6 +64,9 @@ public class InvoiceLineItemUpdateOptions : BaseOptions, IHasMetadata
         /// items, where any existing metadata on the invoice line is merged with the incoming data.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -60,12 +78,18 @@ public class InvoiceLineItemUpdateOptions : BaseOptions, IHasMetadata
         /// Recognition documentation</a> for details.
         /// </summary>
         [JsonProperty("period")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("period")]
+#endif
         public InvoiceLineItemPeriodOptions Period { get; set; }
 
         /// <summary>
         /// The ID of the price object. One of <c>price</c> or <c>price_data</c> is required.
         /// </summary>
         [JsonProperty("price")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price")]
+#endif
         public string Price { get; set; }
 
         /// <summary>
@@ -73,12 +97,18 @@ public class InvoiceLineItemUpdateOptions : BaseOptions, IHasMetadata
         /// object inline. One of <c>price</c> or <c>price_data</c> is required.
         /// </summary>
         [JsonProperty("price_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price_data")]
+#endif
         public InvoiceLineItemPriceDataOptions PriceData { get; set; }
 
         /// <summary>
         /// Non-negative integer. The quantity of units for the line item.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         /// <summary>
@@ -92,6 +122,9 @@ public class InvoiceLineItemUpdateOptions : BaseOptions, IHasMetadata
         /// string to remove previously defined tax amounts.
         /// </summary>
         [JsonProperty("tax_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_amounts")]
+#endif
         public List<InvoiceLineItemTaxAmountOptions> TaxAmounts { get; set; }
 
         /// <summary>
@@ -100,6 +133,9 @@ public class InvoiceLineItemUpdateOptions : BaseOptions, IHasMetadata
         /// previously-defined tax rates.
         /// </summary>
         [JsonProperty("tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rates")]
+#endif
         public List<string> TaxRates { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/InvoiceLineItems/InvoiceUpdateInvoiceLineItemsOptions.cs b/src/Stripe.net/Services/InvoiceLineItems/InvoiceUpdateInvoiceLineItemsOptions.cs
index afd7f9fd42..d434a93617 100644
--- a/src/Stripe.net/Services/InvoiceLineItems/InvoiceUpdateInvoiceLineItemsOptions.cs
+++ b/src/Stripe.net/Services/InvoiceLineItems/InvoiceUpdateInvoiceLineItemsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
     using System;
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     [Obsolete("Use InvoiceLineItemUpdateOptions instead.")]
     public class InvoiceUpdateInvoiceLineItemsOptions : BaseOptions, IHasMetadata
@@ -13,6 +16,9 @@ public class InvoiceUpdateInvoiceLineItemsOptions : BaseOptions, IHasMetadata
         /// negative amount.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class InvoiceUpdateInvoiceLineItemsOptions : BaseOptions, IHasMetadata
         /// displayed in the invoice for easy tracking.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class InvoiceUpdateInvoiceLineItemsOptions : BaseOptions, IHasMetadata
         /// prorations.
         /// </summary>
         [JsonProperty("discountable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discountable")]
+#endif
         public bool? Discountable { get; set; }
 
         /// <summary>
@@ -36,6 +48,9 @@ public class InvoiceUpdateInvoiceLineItemsOptions : BaseOptions, IHasMetadata
         /// previously-defined discounts.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<InvoiceLineItemDiscountOptions> Discounts { get; set; }
 
         /// <summary>
@@ -50,6 +65,9 @@ public class InvoiceUpdateInvoiceLineItemsOptions : BaseOptions, IHasMetadata
         /// items, where any existing metadata on the invoice line is merged with the incoming data.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -61,12 +79,18 @@ public class InvoiceUpdateInvoiceLineItemsOptions : BaseOptions, IHasMetadata
         /// Recognition documentation</a> for details.
         /// </summary>
         [JsonProperty("period")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("period")]
+#endif
         public InvoiceLineItemPeriodOptions Period { get; set; }
 
         /// <summary>
         /// The ID of the price object. One of <c>price</c> or <c>price_data</c> is required.
         /// </summary>
         [JsonProperty("price")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price")]
+#endif
         public string Price { get; set; }
 
         /// <summary>
@@ -74,12 +98,18 @@ public class InvoiceUpdateInvoiceLineItemsOptions : BaseOptions, IHasMetadata
         /// object inline. One of <c>price</c> or <c>price_data</c> is required.
         /// </summary>
         [JsonProperty("price_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price_data")]
+#endif
         public InvoiceLineItemPriceDataOptions PriceData { get; set; }
 
         /// <summary>
         /// Non-negative integer. The quantity of units for the line item.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         /// <summary>
@@ -93,6 +123,9 @@ public class InvoiceUpdateInvoiceLineItemsOptions : BaseOptions, IHasMetadata
         /// string to remove previously defined tax amounts.
         /// </summary>
         [JsonProperty("tax_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_amounts")]
+#endif
         public List<InvoiceLineItemTaxAmountOptions> TaxAmounts { get; set; }
 
         /// <summary>
@@ -101,6 +134,9 @@ public class InvoiceUpdateInvoiceLineItemsOptions : BaseOptions, IHasMetadata
         /// previously-defined tax rates.
         /// </summary>
         [JsonProperty("tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rates")]
+#endif
         public List<string> TaxRates { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/InvoiceRenderingTemplates/InvoiceRenderingTemplateGetOptions.cs b/src/Stripe.net/Services/InvoiceRenderingTemplates/InvoiceRenderingTemplateGetOptions.cs
index 6ca4eeb979..275792e89f 100644
--- a/src/Stripe.net/Services/InvoiceRenderingTemplates/InvoiceRenderingTemplateGetOptions.cs
+++ b/src/Stripe.net/Services/InvoiceRenderingTemplates/InvoiceRenderingTemplateGetOptions.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceRenderingTemplateGetOptions : BaseOptions
     {
         [JsonProperty("version")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("version")]
+#endif
         public long? Version { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/InvoiceRenderingTemplates/InvoiceRenderingTemplateListOptions.cs b/src/Stripe.net/Services/InvoiceRenderingTemplates/InvoiceRenderingTemplateListOptions.cs
index d304d6a3e6..527f392862 100644
--- a/src/Stripe.net/Services/InvoiceRenderingTemplates/InvoiceRenderingTemplateListOptions.cs
+++ b/src/Stripe.net/Services/InvoiceRenderingTemplates/InvoiceRenderingTemplateListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceRenderingTemplateListOptions : ListOptions
     {
@@ -9,6 +12,9 @@ public class InvoiceRenderingTemplateListOptions : ListOptions
         /// One of: <c>active</c>, or <c>archived</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/InvoiceRenderingTemplates/InvoiceRenderingTemplateService.cs b/src/Stripe.net/Services/InvoiceRenderingTemplates/InvoiceRenderingTemplateService.cs
index df34c6f878..83020d88b1 100644
--- a/src/Stripe.net/Services/InvoiceRenderingTemplates/InvoiceRenderingTemplateService.cs
+++ b/src/Stripe.net/Services/InvoiceRenderingTemplates/InvoiceRenderingTemplateService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class InvoiceRenderingTemplateService : Service<InvoiceRenderingTemplate>,
+    public class InvoiceRenderingTemplateService : Service,
         IListable<InvoiceRenderingTemplate, InvoiceRenderingTemplateListOptions>,
         IRetrievable<InvoiceRenderingTemplate, InvoiceRenderingTemplateGetOptions>
     {
diff --git a/src/Stripe.net/Services/Invoices/InvoiceAddLinesOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceAddLinesOptions.cs
index 7f72d2def5..5dcf77af81 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceAddLinesOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceAddLinesOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceAddLinesOptions : BaseOptions
     {
@@ -13,12 +16,18 @@ public class InvoiceAddLinesOptions : BaseOptions
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("invoice_metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_metadata")]
+#endif
         public Dictionary<string, string> InvoiceMetadata { get; set; }
 
         /// <summary>
         /// The line items to add.
         /// </summary>
         [JsonProperty("lines")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lines")]
+#endif
         public List<InvoiceLineOptions> Lines { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceAutomaticTaxLiabilityOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceAutomaticTaxLiabilityOptions.cs
index f5a1099060..10feb896fb 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceAutomaticTaxLiabilityOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceAutomaticTaxLiabilityOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceAutomaticTaxLiabilityOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class InvoiceAutomaticTaxLiabilityOptions : INestedOptions
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public string Account { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class InvoiceAutomaticTaxLiabilityOptions : INestedOptions
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceAutomaticTaxOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceAutomaticTaxOptions.cs
index cfdf99f524..2bc7526b30 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceAutomaticTaxOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceAutomaticTaxOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceAutomaticTaxOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class InvoiceAutomaticTaxOptions : INestedOptions
         /// <c>tax_behavior=unspecified</c>) cannot be added to automatic tax invoices.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class InvoiceAutomaticTaxOptions : INestedOptions
         /// transaction is returned in the report of the connected account.
         /// </summary>
         [JsonProperty("liability")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("liability")]
+#endif
         public InvoiceAutomaticTaxLiabilityOptions Liability { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceCreateOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceCreateOptions.cs
index f85aebf9c5..69e77a35ba 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceCreateOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceCreateOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceCreateOptions : BaseOptions, IHasMetadata
     {
@@ -13,6 +16,9 @@ public class InvoiceCreateOptions : BaseOptions, IHasMetadata
         /// draft.
         /// </summary>
         [JsonProperty("account_tax_ids")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_tax_ids")]
+#endif
         public List<string> AccountTaxIds { get; set; }
 
         /// <summary>
@@ -23,6 +29,9 @@ public class InvoiceCreateOptions : BaseOptions, IHasMetadata
         /// href="https://stripe.com/docs/billing/invoices/connect#collecting-fees">documentation</a>.
         /// </summary>
         [JsonProperty("application_fee_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_amount")]
+#endif
         public long? ApplicationFeeAmount { get; set; }
 
         /// <summary>
@@ -32,12 +41,18 @@ public class InvoiceCreateOptions : BaseOptions, IHasMetadata
         /// automatically advance without an explicit action.
         /// </summary>
         [JsonProperty("auto_advance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("auto_advance")]
+#endif
         public bool? AutoAdvance { get; set; }
 
         /// <summary>
         /// Settings for automatic tax lookup for this invoice.
         /// </summary>
         [JsonProperty("automatic_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatic_tax")]
+#endif
         public InvoiceAutomaticTaxOptions AutomaticTax { get; set; }
 
         /// <summary>
@@ -46,6 +61,10 @@ public class InvoiceCreateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("automatically_finalizes_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatically_finalizes_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? AutomaticallyFinalizesAt { get; set; }
 
         /// <summary>
@@ -56,6 +75,9 @@ public class InvoiceCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>charge_automatically</c>, or <c>send_invoice</c>.
         /// </summary>
         [JsonProperty("collection_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("collection_method")]
+#endif
         public string CollectionMethod { get; set; }
 
         /// <summary>
@@ -63,18 +85,27 @@ public class InvoiceCreateOptions : BaseOptions, IHasMetadata
         /// specified.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// A list of up to 4 custom fields to be displayed on the invoice.
         /// </summary>
         [JsonProperty("custom_fields")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_fields")]
+#endif
         public List<InvoiceCustomFieldOptions> CustomFields { get; set; }
 
         /// <summary>
         /// The ID of the customer who will be billed.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
@@ -82,6 +113,9 @@ public class InvoiceCreateOptions : BaseOptions, IHasMetadata
         /// invoices where <c>collection_method=send_invoice</c>.
         /// </summary>
         [JsonProperty("days_until_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("days_until_due")]
+#endif
         public long? DaysUntilDue { get; set; }
 
         /// <summary>
@@ -90,6 +124,9 @@ public class InvoiceCreateOptions : BaseOptions, IHasMetadata
         /// method, if any, or to the default payment method in the customer's invoice settings.
         /// </summary>
         [JsonProperty("default_payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_payment_method")]
+#endif
         public string DefaultPaymentMethod { get; set; }
 
         /// <summary>
@@ -98,12 +135,18 @@ public class InvoiceCreateOptions : BaseOptions, IHasMetadata
         /// subscription's default source, if any, or to the customer's default source.
         /// </summary>
         [JsonProperty("default_source")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_source")]
+#endif
         public string DefaultSource { get; set; }
 
         /// <summary>
         /// The tax rates that will apply to any line item that does not have <c>tax_rates</c> set.
         /// </summary>
         [JsonProperty("default_tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_tax_rates")]
+#endif
         public List<string> DefaultTaxRates { get; set; }
 
         /// <summary>
@@ -111,6 +154,9 @@ public class InvoiceCreateOptions : BaseOptions, IHasMetadata
         /// Referenced as 'memo' in the Dashboard.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -119,6 +165,9 @@ public class InvoiceCreateOptions : BaseOptions, IHasMetadata
         /// avoid inheriting any discounts.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<InvoiceDiscountOptions> Discounts { get; set; }
 
         /// <summary>
@@ -127,6 +176,10 @@ public class InvoiceCreateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("due_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("due_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? DueDate { get; set; }
 
         /// <summary>
@@ -136,12 +189,19 @@ public class InvoiceCreateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("effective_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("effective_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? EffectiveAt { get; set; }
 
         /// <summary>
         /// Footer to be displayed on the invoice.
         /// </summary>
         [JsonProperty("footer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("footer")]
+#endif
         public string Footer { get; set; }
 
         /// <summary>
@@ -150,6 +210,9 @@ public class InvoiceCreateOptions : BaseOptions, IHasMetadata
         /// documentation</a> for more details.
         /// </summary>
         [JsonProperty("from_invoice")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("from_invoice")]
+#endif
         public InvoiceFromInvoiceOptions FromInvoice { get; set; }
 
         /// <summary>
@@ -157,6 +220,9 @@ public class InvoiceCreateOptions : BaseOptions, IHasMetadata
         /// branding and support information of the specified account.
         /// </summary>
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public InvoiceIssuerOptions Issuer { get; set; }
 
         /// <summary>
@@ -166,6 +232,9 @@ public class InvoiceCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -177,6 +246,9 @@ public class InvoiceCreateOptions : BaseOptions, IHasMetadata
         /// invoice numbers, Stripe handles this aspect of compliance for you automatically.
         /// </summary>
         [JsonProperty("number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("number")]
+#endif
         public string Number { get; set; }
 
         /// <summary>
@@ -186,6 +258,9 @@ public class InvoiceCreateOptions : BaseOptions, IHasMetadata
         /// with Connect</a> documentation for details.
         /// </summary>
         [JsonProperty("on_behalf_of")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+#endif
         public string OnBehalfOf { get; set; }
 
         /// <summary>
@@ -193,6 +268,9 @@ public class InvoiceCreateOptions : BaseOptions, IHasMetadata
         /// finalized.
         /// </summary>
         [JsonProperty("payment_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_settings")]
+#endif
         public InvoicePaymentSettingsOptions PaymentSettings { get; set; }
 
         /// <summary>
@@ -201,6 +279,9 @@ public class InvoiceCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>exclude</c>, or <c>include</c>.
         /// </summary>
         [JsonProperty("pending_invoice_items_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pending_invoice_items_behavior")]
+#endif
         public string PendingInvoiceItemsBehavior { get; set; }
 
         /// <summary>
@@ -208,12 +289,18 @@ public class InvoiceCreateOptions : BaseOptions, IHasMetadata
         /// customer-facing surfaces such as PDF and Hosted Invoice Page.
         /// </summary>
         [JsonProperty("rendering")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("rendering")]
+#endif
         public InvoiceRenderingOptions Rendering { get; set; }
 
         /// <summary>
         /// Settings for the cost of shipping for this invoice.
         /// </summary>
         [JsonProperty("shipping_cost")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_cost")]
+#endif
         public InvoiceShippingCostOptions ShippingCost { get; set; }
 
         /// <summary>
@@ -222,6 +309,9 @@ public class InvoiceCreateOptions : BaseOptions, IHasMetadata
         /// customer.
         /// </summary>
         [JsonProperty("shipping_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_details")]
+#endif
         public InvoiceShippingDetailsOptions ShippingDetails { get; set; }
 
         /// <summary>
@@ -231,6 +321,9 @@ public class InvoiceCreateOptions : BaseOptions, IHasMetadata
         /// subscription item's product's <c>statement_descriptor</c>.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
 
         /// <summary>
@@ -239,6 +332,9 @@ public class InvoiceCreateOptions : BaseOptions, IHasMetadata
         /// and regular subscription events won't be affected.
         /// </summary>
         [JsonProperty("subscription")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription")]
+#endif
         public string Subscription { get; set; }
 
         /// <summary>
@@ -246,6 +342,9 @@ public class InvoiceCreateOptions : BaseOptions, IHasMetadata
         /// ID of the resulting transfer will be found on the invoice's charge.
         /// </summary>
         [JsonProperty("transfer_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_data")]
+#endif
         public InvoiceTransferDataOptions TransferData { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceCreatePreviewOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceCreatePreviewOptions.cs
index ff99fe660b..5ed03820e4 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceCreatePreviewOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceCreatePreviewOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceCreatePreviewOptions : BaseOptions
     {
@@ -10,6 +13,9 @@ public class InvoiceCreatePreviewOptions : BaseOptions
         /// Settings for automatic tax lookup for this invoice preview.
         /// </summary>
         [JsonProperty("automatic_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatic_tax")]
+#endif
         public InvoiceAutomaticTaxOptions AutomaticTax { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class InvoiceCreatePreviewOptions : BaseOptions
         /// instead.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class InvoiceCreatePreviewOptions : BaseOptions
         /// specified.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -33,6 +45,9 @@ public class InvoiceCreatePreviewOptions : BaseOptions
         /// <c>subscription</c>, or <c>schedule</c> must be set.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
@@ -41,6 +56,9 @@ public class InvoiceCreatePreviewOptions : BaseOptions
         /// <c>subscription</c>, or <c>schedule</c> must be set.
         /// </summary>
         [JsonProperty("customer_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_details")]
+#endif
         public InvoiceCustomerDetailsOptions CustomerDetails { get; set; }
 
         /// <summary>
@@ -50,12 +68,18 @@ public class InvoiceCreatePreviewOptions : BaseOptions
         /// avoid inheriting any discounts.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<InvoiceDiscountOptions> Discounts { get; set; }
 
         /// <summary>
         /// List of invoice items to add or update in the upcoming invoice preview (up to 250).
         /// </summary>
         [JsonProperty("invoice_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_items")]
+#endif
         public List<InvoiceUpcomingInvoiceItemOptions> InvoiceItems { get; set; }
 
         /// <summary>
@@ -63,6 +87,9 @@ public class InvoiceCreatePreviewOptions : BaseOptions
         /// branding and support information of the specified account.
         /// </summary>
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public InvoiceIssuerOptions Issuer { get; set; }
 
         /// <summary>
@@ -72,6 +99,9 @@ public class InvoiceCreatePreviewOptions : BaseOptions
         /// with Connect</a> documentation for details.
         /// </summary>
         [JsonProperty("on_behalf_of")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+#endif
         public string OnBehalfOf { get; set; }
 
         /// <summary>
@@ -80,6 +110,9 @@ public class InvoiceCreatePreviewOptions : BaseOptions
         /// One of: <c>next</c>, or <c>recurring</c>.
         /// </summary>
         [JsonProperty("preview_mode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preview_mode")]
+#endif
         public string PreviewMode { get; set; }
 
         /// <summary>
@@ -87,6 +120,9 @@ public class InvoiceCreatePreviewOptions : BaseOptions
         /// used with subscription or subscription fields.
         /// </summary>
         [JsonProperty("schedule")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("schedule")]
+#endif
         public string Schedule { get; set; }
 
         /// <summary>
@@ -94,6 +130,9 @@ public class InvoiceCreatePreviewOptions : BaseOptions
         /// <c>subscription</c> or <c>subscription_</c> prefixed fields.
         /// </summary>
         [JsonProperty("schedule_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("schedule_details")]
+#endif
         public InvoiceScheduleDetailsOptions ScheduleDetails { get; set; }
 
         /// <summary>
@@ -104,6 +143,9 @@ public class InvoiceCreatePreviewOptions : BaseOptions
         /// invoice from among the customer's subscriptions.
         /// </summary>
         [JsonProperty("subscription")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription")]
+#endif
         public string Subscription { get; set; }
 
         /// <summary>
@@ -111,6 +153,9 @@ public class InvoiceCreatePreviewOptions : BaseOptions
         /// with <c>schedule</c> or <c>schedule_details</c> fields.
         /// </summary>
         [JsonProperty("subscription_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_details")]
+#endif
         public InvoiceSubscriptionDetailsOptions SubscriptionDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceCustomFieldOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceCustomFieldOptions.cs
index 43f76c7d2d..b15c5c7558 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceCustomFieldOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceCustomFieldOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceCustomFieldOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class InvoiceCustomFieldOptions : INestedOptions
         /// The name of the custom field. This may be up to 40 characters.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// The value of the custom field. This may be up to 140 characters.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceCustomerDetailsOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceCustomerDetailsOptions.cs
index d300b0bdc0..96ccaf8ead 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceCustomerDetailsOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceCustomerDetailsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceCustomerDetailsOptions : INestedOptions
     {
@@ -10,18 +13,27 @@ public class InvoiceCustomerDetailsOptions : INestedOptions
         /// The customer's address.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public AddressOptions Address { get; set; }
 
         /// <summary>
         /// The customer's shipping information. Appears on invoices emailed to this customer.
         /// </summary>
         [JsonProperty("shipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping")]
+#endif
         public ShippingOptions Shipping { get; set; }
 
         /// <summary>
         /// Tax details about the customer.
         /// </summary>
         [JsonProperty("tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax")]
+#endif
         public InvoiceCustomerDetailsTaxOptions Tax { get; set; }
 
         /// <summary>
@@ -29,12 +41,18 @@ public class InvoiceCustomerDetailsOptions : INestedOptions
         /// One of: <c>exempt</c>, <c>none</c>, or <c>reverse</c>.
         /// </summary>
         [JsonProperty("tax_exempt")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_exempt")]
+#endif
         public string TaxExempt { get; set; }
 
         /// <summary>
         /// The customer's tax IDs.
         /// </summary>
         [JsonProperty("tax_ids")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_ids")]
+#endif
         public List<InvoiceCustomerDetailsTaxIdOptions> TaxIds { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceCustomerDetailsTaxIdOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceCustomerDetailsTaxIdOptions.cs
index 9112960bb7..9d0033763c 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceCustomerDetailsTaxIdOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceCustomerDetailsTaxIdOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceCustomerDetailsTaxIdOptions : INestedOptions
     {
@@ -48,12 +51,18 @@ public class InvoiceCustomerDetailsTaxIdOptions : INestedOptions
         /// <c>vn_tin</c>, <c>za_vat</c>, <c>zm_tin</c>, or <c>zw_tin</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
         /// Value of the tax ID.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceCustomerDetailsTaxOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceCustomerDetailsTaxOptions.cs
index 87f6e831a9..25aacf905a 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceCustomerDetailsTaxOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceCustomerDetailsTaxOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceCustomerDetailsTaxOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class InvoiceCustomerDetailsTaxOptions : INestedOptions
         /// frequently since it could result in unexpected tax location/reporting outcomes.
         /// </summary>
         [JsonProperty("ip_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip_address")]
+#endif
         public string IpAddress { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceDiscountOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceDiscountOptions.cs
index aca19811e3..312c44bf7d 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceDiscountOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceDiscountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceDiscountOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class InvoiceDiscountOptions : INestedOptions
         /// ID of the coupon to create a new discount for.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
         /// ID of an existing discount on the object (or one of its ancestors) to reuse.
         /// </summary>
         [JsonProperty("discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+#endif
         public string Discount { get; set; }
 
         /// <summary>
         /// ID of the promotion code to create a new discount for.
         /// </summary>
         [JsonProperty("promotion_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotion_code")]
+#endif
         public string PromotionCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceFinalizeOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceFinalizeOptions.cs
index 46836f815e..9dd92e1684 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceFinalizeOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceFinalizeOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceFinalizeOptions : BaseOptions
     {
@@ -12,6 +15,9 @@ public class InvoiceFinalizeOptions : BaseOptions
         /// automatically advance without an explicit action.
         /// </summary>
         [JsonProperty("auto_advance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("auto_advance")]
+#endif
         public bool? AutoAdvance { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceFromInvoiceOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceFromInvoiceOptions.cs
index 67d5f0efb5..c4384e2bf4 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceFromInvoiceOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceFromInvoiceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceFromInvoiceOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class InvoiceFromInvoiceOptions : INestedOptions
         /// 'revision' is permitted.
         /// </summary>
         [JsonProperty("action")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("action")]
+#endif
         public string Action { get; set; }
 
         /// <summary>
         /// The <c>id</c> of the invoice that will be cloned.
         /// </summary>
         [JsonProperty("invoice")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice")]
+#endif
         public string Invoice { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceIssuerOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceIssuerOptions.cs
index 35d78ff58c..e2622b9006 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceIssuerOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceIssuerOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceIssuerOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class InvoiceIssuerOptions : INestedOptions
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public string Account { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class InvoiceIssuerOptions : INestedOptions
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceLineDiscountOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceLineDiscountOptions.cs
index daf2c6687e..84b9499a2a 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceLineDiscountOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceLineDiscountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceLineDiscountOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class InvoiceLineDiscountOptions : INestedOptions
         /// ID of the coupon to create a new discount for.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
         /// ID of an existing discount on the object (or one of its ancestors) to reuse.
         /// </summary>
         [JsonProperty("discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+#endif
         public string Discount { get; set; }
 
         /// <summary>
         /// ID of the promotion code to create a new discount for.
         /// </summary>
         [JsonProperty("promotion_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotion_code")]
+#endif
         public string PromotionCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceLineItemListOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceLineItemListOptions.cs
index 20a07b1b0a..e0c6dd34c9 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceLineItemListOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceLineItemListOptions.cs
@@ -2,19 +2,40 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceLineItemListOptions : ListOptions
     {
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         [JsonProperty("subscription")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription")]
+#endif
         public string Subscription { get; set; }
 
+        [JsonProperty("subscription_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_items")]
+#endif
+        public List<InvoiceSubscriptionItemOptions> SubscriptionItems { get; set; }
+
         [JsonProperty("subscription_plan")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_plan")]
+#endif
         public string SubscriptionPlan { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceLineOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceLineOptions.cs
index a6a5430213..e4908a3fac 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceLineOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceLineOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceLineOptions : INestedOptions, IHasMetadata, IHasId
     {
@@ -12,6 +15,9 @@ public class InvoiceLineOptions : INestedOptions, IHasMetadata, IHasId
         /// negative amount.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class InvoiceLineOptions : INestedOptions, IHasMetadata, IHasId
         /// One of: <c>delete</c>, or <c>unassign</c>.
         /// </summary>
         [JsonProperty("behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("behavior")]
+#endif
         public string Behavior { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class InvoiceLineOptions : INestedOptions, IHasMetadata, IHasId
         /// displayed in the invoice for easy tracking.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -35,6 +47,9 @@ public class InvoiceLineOptions : INestedOptions, IHasMetadata, IHasId
         /// prorations.
         /// </summary>
         [JsonProperty("discountable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discountable")]
+#endif
         public bool? Discountable { get; set; }
 
         /// <summary>
@@ -43,12 +58,18 @@ public class InvoiceLineOptions : INestedOptions, IHasMetadata, IHasId
         /// previously-defined discounts.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<InvoiceLineDiscountOptions> Discounts { get; set; }
 
         /// <summary>
         /// ID of an existing line item to remove from this invoice.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
@@ -56,6 +77,9 @@ public class InvoiceLineOptions : INestedOptions, IHasMetadata, IHasId
         /// will be created.
         /// </summary>
         [JsonProperty("invoice_item")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_item")]
+#endif
         public string InvoiceItem { get; set; }
 
         /// <summary>
@@ -70,6 +94,9 @@ public class InvoiceLineOptions : INestedOptions, IHasMetadata, IHasId
         /// items, where any existing metadata on the invoice line is merged with the incoming data.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -81,12 +108,18 @@ public class InvoiceLineOptions : INestedOptions, IHasMetadata, IHasId
         /// Recognition documentation</a> for details.
         /// </summary>
         [JsonProperty("period")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("period")]
+#endif
         public InvoiceLinePeriodOptions Period { get; set; }
 
         /// <summary>
         /// The ID of the price object. One of <c>price</c> or <c>price_data</c> is required.
         /// </summary>
         [JsonProperty("price")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price")]
+#endif
         public string Price { get; set; }
 
         /// <summary>
@@ -94,12 +127,18 @@ public class InvoiceLineOptions : INestedOptions, IHasMetadata, IHasId
         /// object inline. One of <c>price</c> or <c>price_data</c> is required.
         /// </summary>
         [JsonProperty("price_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price_data")]
+#endif
         public InvoiceLinePriceDataOptions PriceData { get; set; }
 
         /// <summary>
         /// Non-negative integer. The quantity of units for the line item.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         /// <summary>
@@ -113,6 +152,9 @@ public class InvoiceLineOptions : INestedOptions, IHasMetadata, IHasId
         /// string to remove previously defined tax amounts.
         /// </summary>
         [JsonProperty("tax_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_amounts")]
+#endif
         public List<InvoiceLineTaxAmountOptions> TaxAmounts { get; set; }
 
         /// <summary>
@@ -121,6 +163,9 @@ public class InvoiceLineOptions : INestedOptions, IHasMetadata, IHasId
         /// previously-defined tax rates.
         /// </summary>
         [JsonProperty("tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rates")]
+#endif
         public List<string> TaxRates { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceLinePeriodOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceLinePeriodOptions.cs
index bacfbd8542..6eedfbe544 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceLinePeriodOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceLinePeriodOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceLinePeriodOptions : INestedOptions
     {
@@ -13,6 +16,10 @@ public class InvoiceLinePeriodOptions : INestedOptions
         /// </summary>
         [JsonProperty("end")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? End { get; set; }
 
         /// <summary>
@@ -20,6 +27,10 @@ public class InvoiceLinePeriodOptions : INestedOptions
         /// </summary>
         [JsonProperty("start")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("start")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? Start { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceLinePriceDataOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceLinePriceDataOptions.cs
index 3c4d902241..59ffe78936 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceLinePriceDataOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceLinePriceDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceLinePriceDataOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class InvoiceLinePriceDataOptions : INestedOptions
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class InvoiceLinePriceDataOptions : INestedOptions
         /// <c>product_data</c> is required.
         /// </summary>
         [JsonProperty("product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product")]
+#endif
         public string Product { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class InvoiceLinePriceDataOptions : INestedOptions
         /// <c>product_data</c> is required.
         /// </summary>
         [JsonProperty("product_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_data")]
+#endif
         public InvoiceLinePriceDataProductDataOptions ProductData { get; set; }
 
         /// <summary>
@@ -37,6 +49,9 @@ public class InvoiceLinePriceDataOptions : INestedOptions
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
@@ -44,6 +59,9 @@ public class InvoiceLinePriceDataOptions : INestedOptions
         /// One of <c>unit_amount</c> or <c>unit_amount_decimal</c> is required.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
@@ -52,6 +70,9 @@ public class InvoiceLinePriceDataOptions : INestedOptions
         /// <c>unit_amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceLinePriceDataProductDataOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceLinePriceDataProductDataOptions.cs
index 627bb42f91..926fcbcba8 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceLinePriceDataProductDataOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceLinePriceDataProductDataOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceLinePriceDataProductDataOptions : INestedOptions, IHasMetadata
     {
@@ -12,6 +15,9 @@ public class InvoiceLinePriceDataProductDataOptions : INestedOptions, IHasMetada
         /// rendering purposes.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class InvoiceLinePriceDataProductDataOptions : INestedOptions, IHasMetada
         /// customer.
         /// </summary>
         [JsonProperty("images")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("images")]
+#endif
         public List<string> Images { get; set; }
 
         /// <summary>
@@ -28,18 +37,27 @@ public class InvoiceLinePriceDataProductDataOptions : INestedOptions, IHasMetada
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The product's name, meant to be displayable to the customer.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// A <a href="https://stripe.com/docs/tax/tax-categories">tax code</a> ID.
         /// </summary>
         [JsonProperty("tax_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_code")]
+#endif
         public string TaxCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceLineTaxAmountOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceLineTaxAmountOptions.cs
index 4a2098790b..d43d4e39d3 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceLineTaxAmountOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceLineTaxAmountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceLineTaxAmountOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class InvoiceLineTaxAmountOptions : INestedOptions
         /// The amount, in cents (or local equivalent), of the tax.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -21,12 +27,18 @@ public class InvoiceLineTaxAmountOptions : INestedOptions
         /// payments, or line items.
         /// </summary>
         [JsonProperty("tax_rate_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rate_data")]
+#endif
         public InvoiceLineTaxAmountTaxRateDataOptions TaxRateData { get; set; }
 
         /// <summary>
         /// The amount on which tax is calculated, in cents (or local equivalent).
         /// </summary>
         [JsonProperty("taxable_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxable_amount")]
+#endif
         public long? TaxableAmount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceLineTaxAmountTaxRateDataOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceLineTaxAmountTaxRateDataOptions.cs
index 5206bf403e..55fcef3c83 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceLineTaxAmountTaxRateDataOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceLineTaxAmountTaxRateDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceLineTaxAmountTaxRateDataOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class InvoiceLineTaxAmountTaxRateDataOptions : INestedOptions
         /// 3166-1 alpha-2</a>).
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -17,18 +23,27 @@ public class InvoiceLineTaxAmountTaxRateDataOptions : INestedOptions
         /// visible to your customers.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// The display name of the tax rate, which will be shown to users.
         /// </summary>
         [JsonProperty("display_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_name")]
+#endif
         public string DisplayName { get; set; }
 
         /// <summary>
         /// This specifies if the tax rate is inclusive or exclusive.
         /// </summary>
         [JsonProperty("inclusive")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("inclusive")]
+#endif
         public bool? Inclusive { get; set; }
 
         /// <summary>
@@ -36,6 +51,9 @@ public class InvoiceLineTaxAmountTaxRateDataOptions : INestedOptions
         /// purposes. It also appears on your customer’s invoice.
         /// </summary>
         [JsonProperty("jurisdiction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("jurisdiction")]
+#endif
         public string Jurisdiction { get; set; }
 
         /// <summary>
@@ -45,6 +63,9 @@ public class InvoiceLineTaxAmountTaxRateDataOptions : INestedOptions
         /// <c>amount</c> of the tax is also zero.
         /// </summary>
         [JsonProperty("percentage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentage")]
+#endif
         public decimal? Percentage { get; set; }
 
         /// <summary>
@@ -52,6 +73,9 @@ public class InvoiceLineTaxAmountTaxRateDataOptions : INestedOptions
         /// without country prefix. For example, "NY" for New York, United States.
         /// </summary>
         [JsonProperty("state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("state")]
+#endif
         public string State { get; set; }
 
         /// <summary>
@@ -62,6 +86,9 @@ public class InvoiceLineTaxAmountTaxRateDataOptions : INestedOptions
         /// <c>vat</c>.
         /// </summary>
         [JsonProperty("tax_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_type")]
+#endif
         public string TaxType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceListLineItemsOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceListLineItemsOptions.cs
index 6d6d6b39e4..58208e64d0 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceListLineItemsOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceListLineItemsOptions.cs
@@ -3,20 +3,41 @@ namespace Stripe
     using System;
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     [Obsolete("Use InvoiceLineItemListOptions instead.")]
     public class InvoiceListLineItemsOptions : ListOptions
     {
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         [JsonProperty("subscription")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription")]
+#endif
         public string Subscription { get; set; }
 
+        [JsonProperty("subscription_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_items")]
+#endif
+        public List<InvoiceSubscriptionItemOptions> SubscriptionItems { get; set; }
+
         [JsonProperty("subscription_plan")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_plan")]
+#endif
         public string SubscriptionPlan { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceListOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceListOptions.cs
index 679249c455..cf269acf6f 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceListOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceListOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceListOptions : ListOptionsWithCreated
     {
@@ -13,16 +16,26 @@ public class InvoiceListOptions : ListOptionsWithCreated
         /// One of: <c>charge_automatically</c>, or <c>send_invoice</c>.
         /// </summary>
         [JsonProperty("collection_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("collection_method")]
+#endif
         public string CollectionMethod { get; set; }
 
         /// <summary>
         /// Only return invoices for the customer specified by this customer ID.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         [JsonProperty("due_date")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("due_date")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, DateRangeOptions> DueDate { get; set; }
 
         /// <summary>
@@ -33,12 +46,18 @@ public class InvoiceListOptions : ListOptionsWithCreated
         /// One of: <c>draft</c>, <c>open</c>, <c>paid</c>, <c>uncollectible</c>, or <c>void</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
         /// Only return invoices for the subscription specified by this subscription ID.
         /// </summary>
         [JsonProperty("subscription")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription")]
+#endif
         public string Subscription { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoicePayOptions.cs b/src/Stripe.net/Services/Invoices/InvoicePayOptions.cs
index b32f0f8c2e..bd5369a954 100644
--- a/src/Stripe.net/Services/Invoices/InvoicePayOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoicePayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoicePayOptions : BaseOptions
     {
@@ -17,6 +20,9 @@ public class InvoicePayOptions : BaseOptions
         /// forgive the difference. Defaults to <c>false</c>.
         /// </summary>
         [JsonProperty("forgive")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("forgive")]
+#endif
         public bool? Forgive { get; set; }
 
         /// <summary>
@@ -25,6 +31,9 @@ public class InvoicePayOptions : BaseOptions
         /// default_payment_method or default_source, if set.
         /// </summary>
         [JsonProperty("mandate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate")]
+#endif
         public string Mandate { get; set; }
 
         /// <summary>
@@ -32,6 +41,9 @@ public class InvoicePayOptions : BaseOptions
         /// Defaults to <c>true</c> (off-session).
         /// </summary>
         [JsonProperty("off_session")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("off_session")]
+#endif
         public bool? OffSession { get; set; }
 
         /// <summary>
@@ -39,6 +51,9 @@ public class InvoicePayOptions : BaseOptions
         /// no charge being made. Defaults to <c>false</c>.
         /// </summary>
         [JsonProperty("paid_out_of_band")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paid_out_of_band")]
+#endif
         public bool? PaidOutOfBand { get; set; }
 
         /// <summary>
@@ -46,6 +61,9 @@ public class InvoicePayOptions : BaseOptions
         /// belonging to the customer associated with the invoice being paid.
         /// </summary>
         [JsonProperty("payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method")]
+#endif
         public string PaymentMethod { get; set; }
 
         /// <summary>
@@ -53,6 +71,9 @@ public class InvoicePayOptions : BaseOptions
         /// customer associated with the invoice being paid.
         /// </summary>
         [JsonProperty("source")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source")]
+#endif
         public string Source { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsOptions.cs b/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsOptions.cs
index ca320ba88a..6bd33bd469 100644
--- a/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoicePaymentSettingsOptions : INestedOptions
     {
@@ -12,12 +15,18 @@ public class InvoicePaymentSettingsOptions : INestedOptions
         /// default_source, if set.
         /// </summary>
         [JsonProperty("default_mandate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_mandate")]
+#endif
         public string DefaultMandate { get; set; }
 
         /// <summary>
         /// Payment-method-specific configuration to provide to the invoice’s PaymentIntent.
         /// </summary>
         [JsonProperty("payment_method_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_options")]
+#endif
         public InvoicePaymentSettingsPaymentMethodOptionsOptions PaymentMethodOptions { get; set; }
 
         /// <summary>
@@ -37,6 +46,9 @@ public class InvoicePaymentSettingsOptions : INestedOptions
         /// <c>sofort</c>, <c>swish</c>, <c>us_bank_account</c>, or <c>wechat_pay</c>.
         /// </summary>
         [JsonProperty("payment_method_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_types")]
+#endif
         public List<string> PaymentMethodTypes { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsAcssDebitMandateOptionsOptions.cs b/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsAcssDebitMandateOptionsOptions.cs
index 51deec74ab..c1099bc859 100644
--- a/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsAcssDebitMandateOptionsOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsAcssDebitMandateOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoicePaymentSettingsPaymentMethodOptionsAcssDebitMandateOptionsOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsAcssDebitMandateOptionsOp
         /// One of: <c>business</c>, or <c>personal</c>.
         /// </summary>
         [JsonProperty("transaction_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_type")]
+#endif
         public string TransactionType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsAcssDebitOptions.cs b/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsAcssDebitOptions.cs
index 34c0fe2565..e0a8043987 100644
--- a/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsAcssDebitOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsAcssDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoicePaymentSettingsPaymentMethodOptionsAcssDebitOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsAcssDebitOptions : INeste
         /// Additional fields for Mandate creation.
         /// </summary>
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public InvoicePaymentSettingsPaymentMethodOptionsAcssDebitMandateOptionsOptions MandateOptions { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsAcssDebitOptions : INeste
         /// One of: <c>automatic</c>, <c>instant</c>, or <c>microdeposits</c>.
         /// </summary>
         [JsonProperty("verification_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification_method")]
+#endif
         public string VerificationMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsBancontactOptions.cs b/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsBancontactOptions.cs
index 9c8511856a..d1f96edc5e 100644
--- a/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsBancontactOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsBancontactOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoicePaymentSettingsPaymentMethodOptionsBancontactOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsBancontactOptions : INest
         /// One of: <c>de</c>, <c>en</c>, <c>fr</c>, or <c>nl</c>.
         /// </summary>
         [JsonProperty("preferred_language")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_language")]
+#endif
         public string PreferredLanguage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCardInstallmentsOptions.cs b/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCardInstallmentsOptions.cs
index cd6c838b6a..4c5708bbcb 100644
--- a/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCardInstallmentsOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCardInstallmentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoicePaymentSettingsPaymentMethodOptionsCardInstallmentsOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class InvoicePaymentSettingsPaymentMethodOptionsCardInstallmentsOptions :
         /// selected plan from applying to a payment.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
         /// The selected installment plan to use for this invoice.
         /// </summary>
         [JsonProperty("plan")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("plan")]
+#endif
         public InvoicePaymentSettingsPaymentMethodOptionsCardInstallmentsPlanOptions Plan { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCardInstallmentsPlanOptions.cs b/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCardInstallmentsPlanOptions.cs
index 2163da1844..19031b807d 100644
--- a/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCardInstallmentsPlanOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCardInstallmentsPlanOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoicePaymentSettingsPaymentMethodOptionsCardInstallmentsPlanOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsCardInstallmentsPlanOptio
         /// installment payments your customer will make to their credit card.
         /// </summary>
         [JsonProperty("count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("count")]
+#endif
         public long? Count { get; set; }
 
         /// <summary>
@@ -18,12 +24,18 @@ public class InvoicePaymentSettingsPaymentMethodOptionsCardInstallmentsPlanOptio
         /// <c>month</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
 
         /// <summary>
         /// Type of installment plan, one of <c>fixed_count</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCardOptions.cs b/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCardOptions.cs
index 5cc0120f68..19261c6610 100644
--- a/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCardOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoicePaymentSettingsPaymentMethodOptionsCardOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsCardOptions : INestedOpti
         /// href="https://stripe.com/docs/payments/installments">installments integration guide</a>.
         /// </summary>
         [JsonProperty("installments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("installments")]
+#endif
         public InvoicePaymentSettingsPaymentMethodOptionsCardInstallmentsOptions Installments { get; set; }
 
         /// <summary>
@@ -26,6 +32,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsCardOptions : INestedOpti
         /// One of: <c>any</c>, <c>automatic</c>, or <c>challenge</c>.
         /// </summary>
         [JsonProperty("request_three_d_secure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_three_d_secure")]
+#endif
         public string RequestThreeDSecure { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransferOptions.cs b/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransferOptions.cs
index 6e545f89ba..105fd1f4c6 100644
--- a/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransferOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransferOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransferOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransf
         /// <c>BE</c>, <c>DE</c>, <c>ES</c>, <c>FR</c>, <c>IE</c>, or <c>NL</c>.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferOptions.cs b/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferOptions.cs
index 4a868c8dc2..b9e168ed3f 100644
--- a/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransf
         /// Configuration for eu_bank_transfer funding type.
         /// </summary>
         [JsonProperty("eu_bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eu_bank_transfer")]
+#endif
         public InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransferOptions EuBankTransfer { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransf
         /// <c>mx_bank_transfer</c>, or <c>us_bank_transfer</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceOptions.cs b/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceOptions.cs
index ff5b2baa2e..a280693e53 100644
--- a/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceOptions :
         /// <c>bank_transfer</c>.
         /// </summary>
         [JsonProperty("bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_transfer")]
+#endif
         public InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferOptions BankTransfer { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceOptions :
         /// balance. Permitted values include: <c>bank_transfer</c>.
         /// </summary>
         [JsonProperty("funding_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding_type")]
+#endif
         public string FundingType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsOptions.cs b/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsOptions.cs
index 390618be61..fbc13846e2 100644
--- a/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoicePaymentSettingsPaymentMethodOptionsOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsOptions : INestedOptions
         /// pre-authorized debit payment method options to pass to the invoice’s PaymentIntent.
         /// </summary>
         [JsonProperty("acss_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acss_debit")]
+#endif
         public InvoicePaymentSettingsPaymentMethodOptionsAcssDebitOptions AcssDebit { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsOptions : INestedOptions
         /// payment method options to pass to the invoice’s PaymentIntent.
         /// </summary>
         [JsonProperty("bancontact")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bancontact")]
+#endif
         public InvoicePaymentSettingsPaymentMethodOptionsBancontactOptions Bancontact { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsOptions : INestedOptions
         /// options to pass to the invoice’s PaymentIntent.
         /// </summary>
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public InvoicePaymentSettingsPaymentMethodOptionsCardOptions Card { get; set; }
 
         /// <summary>
@@ -31,6 +43,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsOptions : INestedOptions
         /// transfer payment method options to pass to the invoice’s PaymentIntent.
         /// </summary>
         [JsonProperty("customer_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_balance")]
+#endif
         public InvoicePaymentSettingsPaymentMethodOptionsCustomerBalanceOptions CustomerBalance { get; set; }
 
         /// <summary>
@@ -38,6 +53,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsOptions : INestedOptions
         /// method options to pass to the invoice’s PaymentIntent.
         /// </summary>
         [JsonProperty("konbini")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("konbini")]
+#endif
         public InvoicePaymentSettingsPaymentMethodOptionsKonbiniOptions Konbini { get; set; }
 
         /// <summary>
@@ -45,6 +63,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsOptions : INestedOptions
         /// Debit payment method options to pass to the invoice’s PaymentIntent.
         /// </summary>
         [JsonProperty("sepa_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_debit")]
+#endif
         public InvoicePaymentSettingsPaymentMethodOptionsSepaDebitOptions SepaDebit { get; set; }
 
         /// <summary>
@@ -52,6 +73,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsOptions : INestedOptions
         /// debit payment method options to pass to the invoice’s PaymentIntent.
         /// </summary>
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountOptions UsBankAccount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsFiltersOptions.cs b/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsFiltersOptions.cs
index 8ce45177ea..c25f6e7c42 100644
--- a/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsFiltersOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsFiltersOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsFiltersOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialCon
         /// One of: <c>checking</c>, or <c>savings</c>.
         /// </summary>
         [JsonProperty("account_subcategories")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_subcategories")]
+#endif
         public List<string> AccountSubcategories { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions.cs b/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions.cs
index c9a80017e2..e47cc26926 100644
--- a/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialCon
         /// method.
         /// </summary>
         [JsonProperty("filters")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("filters")]
+#endif
         public InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsFiltersOptions Filters { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialCon
         /// <c>transactions</c>.
         /// </summary>
         [JsonProperty("permissions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("permissions")]
+#endif
         public List<string> Permissions { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialCon
         /// One of: <c>balances</c>, <c>ownership</c>, or <c>transactions</c>.
         /// </summary>
         [JsonProperty("prefetch")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("prefetch")]
+#endif
         public List<string> Prefetch { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountOptions.cs b/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountOptions.cs
index 48ab141be4..50744ffa69 100644
--- a/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountOptions : IN
         /// Additional fields for Financial Connections Session creation.
         /// </summary>
         [JsonProperty("financial_connections")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_connections")]
+#endif
         public InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions FinancialConnections { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class InvoicePaymentSettingsPaymentMethodOptionsUsBankAccountOptions : IN
         /// One of: <c>automatic</c>, <c>instant</c>, or <c>microdeposits</c>.
         /// </summary>
         [JsonProperty("verification_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification_method")]
+#endif
         public string VerificationMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceRemoveLinesOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceRemoveLinesOptions.cs
index 553f8e4964..065693e2e0 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceRemoveLinesOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceRemoveLinesOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceRemoveLinesOptions : BaseOptions
     {
@@ -13,12 +16,18 @@ public class InvoiceRemoveLinesOptions : BaseOptions
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("invoice_metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_metadata")]
+#endif
         public Dictionary<string, string> InvoiceMetadata { get; set; }
 
         /// <summary>
         /// The line items to remove.
         /// </summary>
         [JsonProperty("lines")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lines")]
+#endif
         public List<InvoiceLineOptions> Lines { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceRenderingOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceRenderingOptions.cs
index 2855bc82f6..64c937bd06 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceRenderingOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceRenderingOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceRenderingOptions : INestedOptions
     {
@@ -14,24 +17,36 @@ public class InvoiceRenderingOptions : INestedOptions
         /// One of: <c>exclude_tax</c>, or <c>include_inclusive_tax</c>.
         /// </summary>
         [JsonProperty("amount_tax_display")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_tax_display")]
+#endif
         public string AmountTaxDisplay { get; set; }
 
         /// <summary>
         /// Invoice pdf rendering options.
         /// </summary>
         [JsonProperty("pdf")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pdf")]
+#endif
         public InvoiceRenderingPdfOptions Pdf { get; set; }
 
         /// <summary>
         /// ID of the invoice rendering template to use for this invoice.
         /// </summary>
         [JsonProperty("template")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("template")]
+#endif
         public string Template { get; set; }
 
         /// <summary>
         /// The specific version of invoice rendering template to use for this invoice.
         /// </summary>
         [JsonProperty("template_version")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("template_version")]
+#endif
         public long? TemplateVersion { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceRenderingPdfOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceRenderingPdfOptions.cs
index 2401bb7f8c..d8ce840523 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceRenderingPdfOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceRenderingPdfOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceRenderingPdfOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class InvoiceRenderingPdfOptions : INestedOptions
         /// One of: <c>a4</c>, <c>auto</c>, or <c>letter</c>.
         /// </summary>
         [JsonProperty("page_size")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("page_size")]
+#endif
         public string PageSize { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsOptions.cs
index babadbd7cf..eaee01f597 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceScheduleDetailsOptions : INestedOptions
     {
@@ -15,6 +18,9 @@ public class InvoiceScheduleDetailsOptions : INestedOptions
         /// One of: <c>cancel</c>, or <c>release</c>.
         /// </summary>
         [JsonProperty("end_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end_behavior")]
+#endif
         public string EndBehavior { get; set; }
 
         /// <summary>
@@ -23,6 +29,9 @@ public class InvoiceScheduleDetailsOptions : INestedOptions
         /// <c>end_date</c> of one phase will always equal the <c>start_date</c> of the next phase.
         /// </summary>
         [JsonProperty("phases")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phases")]
+#endif
         public List<InvoiceScheduleDetailsPhaseOptions> Phases { get; set; }
 
         /// <summary>
@@ -31,6 +40,9 @@ public class InvoiceScheduleDetailsOptions : INestedOptions
         /// One of: <c>always_invoice</c>, <c>create_prorations</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("proration_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("proration_behavior")]
+#endif
         public string ProrationBehavior { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseAddInvoiceItemDiscountOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseAddInvoiceItemDiscountOptions.cs
index e24c03cb8f..7e13ece374 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseAddInvoiceItemDiscountOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseAddInvoiceItemDiscountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceScheduleDetailsPhaseAddInvoiceItemDiscountOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class InvoiceScheduleDetailsPhaseAddInvoiceItemDiscountOptions : INestedO
         /// ID of the coupon to create a new discount for.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
         /// ID of an existing discount on the object (or one of its ancestors) to reuse.
         /// </summary>
         [JsonProperty("discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+#endif
         public string Discount { get; set; }
 
         /// <summary>
         /// ID of the promotion code to create a new discount for.
         /// </summary>
         [JsonProperty("promotion_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotion_code")]
+#endif
         public string PromotionCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseAddInvoiceItemOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseAddInvoiceItemOptions.cs
index fa985b064b..bc121d1008 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseAddInvoiceItemOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseAddInvoiceItemOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceScheduleDetailsPhaseAddInvoiceItemOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class InvoiceScheduleDetailsPhaseAddInvoiceItemOptions : INestedOptions
         /// The coupons to redeem into discounts for the item.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<InvoiceScheduleDetailsPhaseAddInvoiceItemDiscountOptions> Discounts { get; set; }
 
         /// <summary>
         /// The ID of the price object. One of <c>price</c> or <c>price_data</c> is required.
         /// </summary>
         [JsonProperty("price")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price")]
+#endif
         public string Price { get; set; }
 
         /// <summary>
@@ -23,12 +32,18 @@ public class InvoiceScheduleDetailsPhaseAddInvoiceItemOptions : INestedOptions
         /// object inline. One of <c>price</c> or <c>price_data</c> is required.
         /// </summary>
         [JsonProperty("price_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price_data")]
+#endif
         public InvoiceScheduleDetailsPhaseAddInvoiceItemPriceDataOptions PriceData { get; set; }
 
         /// <summary>
         /// Quantity for this item. Defaults to 1.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         /// <summary>
@@ -36,6 +51,9 @@ public class InvoiceScheduleDetailsPhaseAddInvoiceItemOptions : INestedOptions
         /// apply to this item.
         /// </summary>
         [JsonProperty("tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rates")]
+#endif
         public List<string> TaxRates { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseAddInvoiceItemPriceDataOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseAddInvoiceItemPriceDataOptions.cs
index ea47828602..2562255d4a 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseAddInvoiceItemPriceDataOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseAddInvoiceItemPriceDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceScheduleDetailsPhaseAddInvoiceItemPriceDataOptions : INestedOptions
     {
@@ -11,12 +14,18 @@ public class InvoiceScheduleDetailsPhaseAddInvoiceItemPriceDataOptions : INested
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// The ID of the product that this price will belong to.
         /// </summary>
         [JsonProperty("product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product")]
+#endif
         public string Product { get; set; }
 
         /// <summary>
@@ -29,6 +38,9 @@ public class InvoiceScheduleDetailsPhaseAddInvoiceItemPriceDataOptions : INested
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
@@ -37,6 +49,9 @@ public class InvoiceScheduleDetailsPhaseAddInvoiceItemPriceDataOptions : INested
         /// customer.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
@@ -45,6 +60,9 @@ public class InvoiceScheduleDetailsPhaseAddInvoiceItemPriceDataOptions : INested
         /// <c>unit_amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseAutomaticTaxLiabilityOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseAutomaticTaxLiabilityOptions.cs
index c4911e42c7..f0cefca7dd 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseAutomaticTaxLiabilityOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseAutomaticTaxLiabilityOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceScheduleDetailsPhaseAutomaticTaxLiabilityOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class InvoiceScheduleDetailsPhaseAutomaticTaxLiabilityOptions : INestedOp
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public string Account { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class InvoiceScheduleDetailsPhaseAutomaticTaxLiabilityOptions : INestedOp
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseAutomaticTaxOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseAutomaticTaxOptions.cs
index a24b0a04a5..a8142f00a7 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseAutomaticTaxOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseAutomaticTaxOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceScheduleDetailsPhaseAutomaticTaxOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class InvoiceScheduleDetailsPhaseAutomaticTaxOptions : INestedOptions
         /// invoices generated by the subscription.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class InvoiceScheduleDetailsPhaseAutomaticTaxOptions : INestedOptions
         /// transaction is returned in the report of the connected account.
         /// </summary>
         [JsonProperty("liability")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("liability")]
+#endif
         public InvoiceScheduleDetailsPhaseAutomaticTaxLiabilityOptions Liability { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseBillingThresholdsOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseBillingThresholdsOptions.cs
index 80147c661f..56ad07b4f5 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseBillingThresholdsOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseBillingThresholdsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceScheduleDetailsPhaseBillingThresholdsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class InvoiceScheduleDetailsPhaseBillingThresholdsOptions : INestedOption
         /// Monetary threshold that triggers the subscription to advance to a new billing period.
         /// </summary>
         [JsonProperty("amount_gte")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_gte")]
+#endif
         public long? AmountGte { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class InvoiceScheduleDetailsPhaseBillingThresholdsOptions : INestedOption
         /// threshold was last reached; otherwise, the value will remain unchanged.
         /// </summary>
         [JsonProperty("reset_billing_cycle_anchor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reset_billing_cycle_anchor")]
+#endif
         public bool? ResetBillingCycleAnchor { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseDiscountOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseDiscountOptions.cs
index ea1f007190..654abf7f80 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseDiscountOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseDiscountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceScheduleDetailsPhaseDiscountOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class InvoiceScheduleDetailsPhaseDiscountOptions : INestedOptions
         /// ID of the coupon to create a new discount for.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
         /// ID of an existing discount on the object (or one of its ancestors) to reuse.
         /// </summary>
         [JsonProperty("discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+#endif
         public string Discount { get; set; }
 
         /// <summary>
         /// ID of the promotion code to create a new discount for.
         /// </summary>
         [JsonProperty("promotion_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotion_code")]
+#endif
         public string PromotionCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseInvoiceSettingsIssuerOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseInvoiceSettingsIssuerOptions.cs
index 65a118a77d..07c2f831ce 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseInvoiceSettingsIssuerOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseInvoiceSettingsIssuerOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceScheduleDetailsPhaseInvoiceSettingsIssuerOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class InvoiceScheduleDetailsPhaseInvoiceSettingsIssuerOptions : INestedOp
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public string Account { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class InvoiceScheduleDetailsPhaseInvoiceSettingsIssuerOptions : INestedOp
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseInvoiceSettingsOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseInvoiceSettingsOptions.cs
index 83bb706f40..9364ce1d07 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseInvoiceSettingsOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseInvoiceSettingsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceScheduleDetailsPhaseInvoiceSettingsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class InvoiceScheduleDetailsPhaseInvoiceSettingsOptions : INestedOptions
         /// on invoices generated by this phase of the subscription schedule.
         /// </summary>
         [JsonProperty("account_tax_ids")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_tax_ids")]
+#endif
         public List<string> AccountTaxIds { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class InvoiceScheduleDetailsPhaseInvoiceSettingsOptions : INestedOptions
         /// <c>billing=charge_automatically</c>.
         /// </summary>
         [JsonProperty("days_until_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("days_until_due")]
+#endif
         public long? DaysUntilDue { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class InvoiceScheduleDetailsPhaseInvoiceSettingsOptions : INestedOptions
         /// branding and support information of the specified account.
         /// </summary>
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public InvoiceScheduleDetailsPhaseInvoiceSettingsIssuerOptions Issuer { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseItemBillingThresholdsOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseItemBillingThresholdsOptions.cs
index 06602cc31a..d7b15b3f94 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseItemBillingThresholdsOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseItemBillingThresholdsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceScheduleDetailsPhaseItemBillingThresholdsOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class InvoiceScheduleDetailsPhaseItemBillingThresholdsOptions : INestedOp
         /// threshold</a>).
         /// </summary>
         [JsonProperty("usage_gte")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("usage_gte")]
+#endif
         public long? UsageGte { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseItemDiscountOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseItemDiscountOptions.cs
index a845968ddc..57a1ca9ea0 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseItemDiscountOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseItemDiscountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceScheduleDetailsPhaseItemDiscountOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class InvoiceScheduleDetailsPhaseItemDiscountOptions : INestedOptions
         /// ID of the coupon to create a new discount for.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
         /// ID of an existing discount on the object (or one of its ancestors) to reuse.
         /// </summary>
         [JsonProperty("discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+#endif
         public string Discount { get; set; }
 
         /// <summary>
         /// ID of the promotion code to create a new discount for.
         /// </summary>
         [JsonProperty("promotion_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotion_code")]
+#endif
         public string PromotionCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseItemOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseItemOptions.cs
index 8338bc0939..0b381026a6 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseItemOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseItemOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceScheduleDetailsPhaseItemOptions : INestedOptions, IHasMetadata
     {
@@ -12,12 +15,18 @@ public class InvoiceScheduleDetailsPhaseItemOptions : INestedOptions, IHasMetada
         /// thresholds.
         /// </summary>
         [JsonProperty("billing_thresholds")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_thresholds")]
+#endif
         public InvoiceScheduleDetailsPhaseItemBillingThresholdsOptions BillingThresholds { get; set; }
 
         /// <summary>
         /// The coupons to redeem into discounts for the subscription item.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<InvoiceScheduleDetailsPhaseItemDiscountOptions> Discounts { get; set; }
 
         /// <summary>
@@ -31,6 +40,9 @@ public class InvoiceScheduleDetailsPhaseItemOptions : INestedOptions, IHasMetada
         /// configuration item's <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -38,12 +50,18 @@ public class InvoiceScheduleDetailsPhaseItemOptions : INestedOptions, IHasMetada
         /// <c>price</c>.
         /// </summary>
         [JsonProperty("plan")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("plan")]
+#endif
         public string Plan { get; set; }
 
         /// <summary>
         /// The ID of the price object.
         /// </summary>
         [JsonProperty("price")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price")]
+#endif
         public string Price { get; set; }
 
         /// <summary>
@@ -51,6 +69,9 @@ public class InvoiceScheduleDetailsPhaseItemOptions : INestedOptions, IHasMetada
         /// object inline.
         /// </summary>
         [JsonProperty("price_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price_data")]
+#endif
         public InvoiceScheduleDetailsPhaseItemPriceDataOptions PriceData { get; set; }
 
         /// <summary>
@@ -58,6 +79,9 @@ public class InvoiceScheduleDetailsPhaseItemOptions : INestedOptions, IHasMetada
         /// <c>licensed</c> and not <c>metered</c>.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         /// <summary>
@@ -68,6 +92,9 @@ public class InvoiceScheduleDetailsPhaseItemOptions : INestedOptions, IHasMetada
         /// tax rates.
         /// </summary>
         [JsonProperty("tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rates")]
+#endif
         public List<string> TaxRates { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseItemPriceDataOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseItemPriceDataOptions.cs
index 40f49c7328..a5334993d4 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseItemPriceDataOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseItemPriceDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceScheduleDetailsPhaseItemPriceDataOptions : INestedOptions
     {
@@ -11,18 +14,27 @@ public class InvoiceScheduleDetailsPhaseItemPriceDataOptions : INestedOptions
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// The ID of the product that this price will belong to.
         /// </summary>
         [JsonProperty("product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product")]
+#endif
         public string Product { get; set; }
 
         /// <summary>
         /// The recurring components of a price such as <c>interval</c> and <c>interval_count</c>.
         /// </summary>
         [JsonProperty("recurring")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("recurring")]
+#endif
         public InvoiceScheduleDetailsPhaseItemPriceDataRecurringOptions Recurring { get; set; }
 
         /// <summary>
@@ -35,6 +47,9 @@ public class InvoiceScheduleDetailsPhaseItemPriceDataOptions : INestedOptions
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
@@ -42,6 +57,9 @@ public class InvoiceScheduleDetailsPhaseItemPriceDataOptions : INestedOptions
         /// how much to charge.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
@@ -50,6 +68,9 @@ public class InvoiceScheduleDetailsPhaseItemPriceDataOptions : INestedOptions
         /// <c>unit_amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseItemPriceDataRecurringOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseItemPriceDataRecurringOptions.cs
index fbbaa13240..670fcfbfac 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseItemPriceDataRecurringOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseItemPriceDataRecurringOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceScheduleDetailsPhaseItemPriceDataRecurringOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class InvoiceScheduleDetailsPhaseItemPriceDataRecurringOptions : INestedO
         /// One of: <c>day</c>, <c>month</c>, <c>week</c>, or <c>year</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class InvoiceScheduleDetailsPhaseItemPriceDataRecurringOptions : INestedO
         /// years interval allowed (3 years, 36 months, or 156 weeks).
         /// </summary>
         [JsonProperty("interval_count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_count")]
+#endif
         public long? IntervalCount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseOptions.cs
index 54f7697a2e..3b629db5d5 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceScheduleDetailsPhaseOptions : INestedOptions, IHasMetadata
     {
@@ -13,6 +16,9 @@ public class InvoiceScheduleDetailsPhaseOptions : INestedOptions, IHasMetadata
         /// invoice for this phase. You may pass up to 20 items.
         /// </summary>
         [JsonProperty("add_invoice_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("add_invoice_items")]
+#endif
         public List<InvoiceScheduleDetailsPhaseAddInvoiceItemOptions> AddInvoiceItems { get; set; }
 
         /// <summary>
@@ -24,12 +30,18 @@ public class InvoiceScheduleDetailsPhaseOptions : INestedOptions, IHasMetadata
         /// href="https://stripe.com/docs/connect/subscriptions#collecting-fees-on-subscriptions">documentation</a>.
         /// </summary>
         [JsonProperty("application_fee_percent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_percent")]
+#endif
         public decimal? ApplicationFeePercent { get; set; }
 
         /// <summary>
         /// Automatic tax settings for this phase.
         /// </summary>
         [JsonProperty("automatic_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatic_tax")]
+#endif
         public InvoiceScheduleDetailsPhaseAutomaticTaxOptions AutomaticTax { get; set; }
 
         /// <summary>
@@ -41,6 +53,9 @@ public class InvoiceScheduleDetailsPhaseOptions : INestedOptions, IHasMetadata
         /// One of: <c>automatic</c>, or <c>phase_start</c>.
         /// </summary>
         [JsonProperty("billing_cycle_anchor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_cycle_anchor")]
+#endif
         public string BillingCycleAnchor { get; set; }
 
         /// <summary>
@@ -48,6 +63,9 @@ public class InvoiceScheduleDetailsPhaseOptions : INestedOptions, IHasMetadata
         /// new billing period. Pass an empty string to remove previously-defined thresholds.
         /// </summary>
         [JsonProperty("billing_thresholds")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_thresholds")]
+#endif
         public InvoiceScheduleDetailsPhaseBillingThresholdsOptions BillingThresholds { get; set; }
 
         /// <summary>
@@ -59,6 +77,9 @@ public class InvoiceScheduleDetailsPhaseOptions : INestedOptions, IHasMetadata
         /// One of: <c>charge_automatically</c>, or <c>send_invoice</c>.
         /// </summary>
         [JsonProperty("collection_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("collection_method")]
+#endif
         public string CollectionMethod { get; set; }
 
         /// <summary>
@@ -67,6 +88,9 @@ public class InvoiceScheduleDetailsPhaseOptions : INestedOptions, IHasMetadata
         /// instead.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
@@ -75,6 +99,9 @@ public class InvoiceScheduleDetailsPhaseOptions : INestedOptions, IHasMetadata
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -83,6 +110,9 @@ public class InvoiceScheduleDetailsPhaseOptions : INestedOptions, IHasMetadata
         /// default payment method in the customer's invoice settings.
         /// </summary>
         [JsonProperty("default_payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_payment_method")]
+#endif
         public string DefaultPaymentMethod { get; set; }
 
         /// <summary>
@@ -94,6 +124,9 @@ public class InvoiceScheduleDetailsPhaseOptions : INestedOptions, IHasMetadata
         /// for any Invoices issued by the Subscription during this Phase.
         /// </summary>
         [JsonProperty("default_tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_tax_rates")]
+#endif
         public List<string> DefaultTaxRates { get; set; }
 
         /// <summary>
@@ -102,6 +135,9 @@ public class InvoiceScheduleDetailsPhaseOptions : INestedOptions, IHasMetadata
         /// certain local payment methods UIs.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -110,6 +146,9 @@ public class InvoiceScheduleDetailsPhaseOptions : INestedOptions, IHasMetadata
         /// any discounts.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<InvoiceScheduleDetailsPhaseDiscountOptions> Discounts { get; set; }
 
         /// <summary>
@@ -118,12 +157,19 @@ public class InvoiceScheduleDetailsPhaseOptions : INestedOptions, IHasMetadata
         /// </summary>
         [JsonProperty("end_date")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end_date")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, InvoiceScheduleDetailsPhaseEndDate> EndDate { get; set; }
 
         /// <summary>
         /// All invoices will be billed using the specified settings.
         /// </summary>
         [JsonProperty("invoice_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_settings")]
+#endif
         public InvoiceScheduleDetailsPhaseInvoiceSettingsOptions InvoiceSettings { get; set; }
 
         /// <summary>
@@ -131,6 +177,9 @@ public class InvoiceScheduleDetailsPhaseOptions : INestedOptions, IHasMetadata
         /// the subscription schedule.
         /// </summary>
         [JsonProperty("items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("items")]
+#endif
         public List<InvoiceScheduleDetailsPhaseItemOptions> Items { get; set; }
 
         /// <summary>
@@ -140,6 +189,9 @@ public class InvoiceScheduleDetailsPhaseOptions : INestedOptions, IHasMetadata
         /// If set, <c>end_date</c> must not be set.
         /// </summary>
         [JsonProperty("iterations")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iterations")]
+#endif
         public long? Iterations { get; set; }
 
         /// <summary>
@@ -153,6 +205,9 @@ public class InvoiceScheduleDetailsPhaseOptions : INestedOptions, IHasMetadata
         /// <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -160,6 +215,9 @@ public class InvoiceScheduleDetailsPhaseOptions : INestedOptions, IHasMetadata
         /// invoices.
         /// </summary>
         [JsonProperty("on_behalf_of")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+#endif
         public string OnBehalfOf { get; set; }
 
         /// <summary>
@@ -174,6 +232,9 @@ public class InvoiceScheduleDetailsPhaseOptions : INestedOptions, IHasMetadata
         /// One of: <c>always_invoice</c>, <c>create_prorations</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("proration_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("proration_behavior")]
+#endif
         public string ProrationBehavior { get; set; }
 
         /// <summary>
@@ -182,6 +243,10 @@ public class InvoiceScheduleDetailsPhaseOptions : INestedOptions, IHasMetadata
         /// </summary>
         [JsonProperty("start_date")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("start_date")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, InvoiceScheduleDetailsPhaseStartDate> StartDate { get; set; }
 
         /// <summary>
@@ -189,6 +254,9 @@ public class InvoiceScheduleDetailsPhaseOptions : INestedOptions, IHasMetadata
         /// subscription's invoices.
         /// </summary>
         [JsonProperty("transfer_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_data")]
+#endif
         public InvoiceScheduleDetailsPhaseTransferDataOptions TransferData { get; set; }
 
         /// <summary>
@@ -196,6 +264,9 @@ public class InvoiceScheduleDetailsPhaseOptions : INestedOptions, IHasMetadata
         /// charged for any fees.
         /// </summary>
         [JsonProperty("trial")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial")]
+#endif
         public bool? Trial { get; set; }
 
         /// <summary>
@@ -204,6 +275,10 @@ public class InvoiceScheduleDetailsPhaseOptions : INestedOptions, IHasMetadata
         /// </summary>
         [JsonProperty("trial_end")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_end")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, InvoiceScheduleDetailsPhaseTrialEnd> TrialEnd { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseTransferDataOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseTransferDataOptions.cs
index ce3522a722..92c71bd345 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseTransferDataOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceScheduleDetailsPhaseTransferDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceScheduleDetailsPhaseTransferDataOptions : INestedOptions
     {
@@ -12,12 +15,18 @@ public class InvoiceScheduleDetailsPhaseTransferDataOptions : INestedOptions
         /// destination.
         /// </summary>
         [JsonProperty("amount_percent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_percent")]
+#endif
         public decimal? AmountPercent { get; set; }
 
         /// <summary>
         /// ID of an existing, connected Stripe account.
         /// </summary>
         [JsonProperty("destination")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination")]
+#endif
         public string Destination { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceService.cs b/src/Stripe.net/Services/Invoices/InvoiceService.cs
index 05943f1731..420434832a 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceService.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public partial class InvoiceService : Service<Invoice>,
+    public partial class InvoiceService : Service,
         ICreatable<Invoice, InvoiceCreateOptions>,
         IDeletable<Invoice, InvoiceDeleteOptions>,
         IListable<Invoice, InvoiceListOptions>,
diff --git a/src/Stripe.net/Services/Invoices/InvoiceShippingCostOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceShippingCostOptions.cs
index 63ffe72fb1..3ab3f2f31f 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceShippingCostOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceShippingCostOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceShippingCostOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class InvoiceShippingCostOptions : INestedOptions
         /// The ID of the shipping rate to use for this order.
         /// </summary>
         [JsonProperty("shipping_rate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_rate")]
+#endif
         public string ShippingRate { get; set; }
 
         /// <summary>
         /// Parameters to create a new ad-hoc shipping rate for this order.
         /// </summary>
         [JsonProperty("shipping_rate_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_rate_data")]
+#endif
         public InvoiceShippingCostShippingRateDataOptions ShippingRateData { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceShippingCostShippingRateDataDeliveryEstimateMaximumOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceShippingCostShippingRateDataDeliveryEstimateMaximumOptions.cs
index d8fcf62c5d..6ef60283be 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceShippingCostShippingRateDataDeliveryEstimateMaximumOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceShippingCostShippingRateDataDeliveryEstimateMaximumOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceShippingCostShippingRateDataDeliveryEstimateMaximumOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class InvoiceShippingCostShippingRateDataDeliveryEstimateMaximumOptions :
         /// One of: <c>business_day</c>, <c>day</c>, <c>hour</c>, <c>month</c>, or <c>week</c>.
         /// </summary>
         [JsonProperty("unit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit")]
+#endif
         public string Unit { get; set; }
 
         /// <summary>
         /// Must be greater than 0.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public long? Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceShippingCostShippingRateDataDeliveryEstimateMinimumOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceShippingCostShippingRateDataDeliveryEstimateMinimumOptions.cs
index 034cce87e1..3d187bbd26 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceShippingCostShippingRateDataDeliveryEstimateMinimumOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceShippingCostShippingRateDataDeliveryEstimateMinimumOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceShippingCostShippingRateDataDeliveryEstimateMinimumOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class InvoiceShippingCostShippingRateDataDeliveryEstimateMinimumOptions :
         /// One of: <c>business_day</c>, <c>day</c>, <c>hour</c>, <c>month</c>, or <c>week</c>.
         /// </summary>
         [JsonProperty("unit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit")]
+#endif
         public string Unit { get; set; }
 
         /// <summary>
         /// Must be greater than 0.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public long? Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceShippingCostShippingRateDataDeliveryEstimateOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceShippingCostShippingRateDataDeliveryEstimateOptions.cs
index 7dcab5278f..91ff791769 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceShippingCostShippingRateDataDeliveryEstimateOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceShippingCostShippingRateDataDeliveryEstimateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceShippingCostShippingRateDataDeliveryEstimateOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class InvoiceShippingCostShippingRateDataDeliveryEstimateOptions : INeste
         /// infinite.
         /// </summary>
         [JsonProperty("maximum")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("maximum")]
+#endif
         public InvoiceShippingCostShippingRateDataDeliveryEstimateMaximumOptions Maximum { get; set; }
 
         /// <summary>
         /// The lower bound of the estimated range. If empty, represents no lower bound.
         /// </summary>
         [JsonProperty("minimum")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("minimum")]
+#endif
         public InvoiceShippingCostShippingRateDataDeliveryEstimateMinimumOptions Minimum { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceShippingCostShippingRateDataFixedAmountCurrencyOptionsOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceShippingCostShippingRateDataFixedAmountCurrencyOptionsOptions.cs
index 800ec8be3d..2ece5fff14 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceShippingCostShippingRateDataFixedAmountCurrencyOptionsOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceShippingCostShippingRateDataFixedAmountCurrencyOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceShippingCostShippingRateDataFixedAmountCurrencyOptionsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class InvoiceShippingCostShippingRateDataFixedAmountCurrencyOptionsOption
         /// A non-negative integer in cents representing how much to charge.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class InvoiceShippingCostShippingRateDataFixedAmountCurrencyOptionsOption
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceShippingCostShippingRateDataFixedAmountOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceShippingCostShippingRateDataFixedAmountOptions.cs
index f28ef98c46..dc5eb7398c 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceShippingCostShippingRateDataFixedAmountOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceShippingCostShippingRateDataFixedAmountOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceShippingCostShippingRateDataFixedAmountOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class InvoiceShippingCostShippingRateDataFixedAmountOptions : INestedOpti
         /// A non-negative integer in cents representing how much to charge.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class InvoiceShippingCostShippingRateDataFixedAmountOptions : INestedOpti
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class InvoiceShippingCostShippingRateDataFixedAmountOptions : INestedOpti
         /// code</a> and a <a href="https://stripe.com/docs/currencies">supported currency</a>.
         /// </summary>
         [JsonProperty("currency_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency_options")]
+#endif
         public Dictionary<string, InvoiceShippingCostShippingRateDataFixedAmountCurrencyOptionsOptions> CurrencyOptions { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceShippingCostShippingRateDataOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceShippingCostShippingRateDataOptions.cs
index 1ca533de8b..3fc65c17cb 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceShippingCostShippingRateDataOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceShippingCostShippingRateDataOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceShippingCostShippingRateDataOptions : INestedOptions, IHasMetadata
     {
@@ -11,6 +14,9 @@ public class InvoiceShippingCostShippingRateDataOptions : INestedOptions, IHasMe
         /// customer. This will appear on CheckoutSessions.
         /// </summary>
         [JsonProperty("delivery_estimate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("delivery_estimate")]
+#endif
         public InvoiceShippingCostShippingRateDataDeliveryEstimateOptions DeliveryEstimate { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class InvoiceShippingCostShippingRateDataOptions : INestedOptions, IHasMe
         /// on CheckoutSessions.
         /// </summary>
         [JsonProperty("display_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_name")]
+#endif
         public string DisplayName { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class InvoiceShippingCostShippingRateDataOptions : INestedOptions, IHasMe
         /// <c>fixed_amount</c>.
         /// </summary>
         [JsonProperty("fixed_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amount")]
+#endif
         public InvoiceShippingCostShippingRateDataFixedAmountOptions FixedAmount { get; set; }
 
         /// <summary>
@@ -34,6 +46,9 @@ public class InvoiceShippingCostShippingRateDataOptions : INestedOptions, IHasMe
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -42,6 +57,9 @@ public class InvoiceShippingCostShippingRateDataOptions : INestedOptions, IHasMe
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
@@ -49,12 +67,18 @@ public class InvoiceShippingCostShippingRateDataOptions : INestedOptions, IHasMe
         /// code is <c>txcd_92010001</c>.
         /// </summary>
         [JsonProperty("tax_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_code")]
+#endif
         public string TaxCode { get; set; }
 
         /// <summary>
         /// The type of calculation to use on the shipping rate.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceShippingDetailsOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceShippingDetailsOptions.cs
index 632873729d..e0db15c777 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceShippingDetailsOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceShippingDetailsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceShippingDetailsOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class InvoiceShippingDetailsOptions : INestedOptions
         /// Shipping address.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public AddressOptions Address { get; set; }
 
         /// <summary>
         /// Recipient name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// Recipient phone (including extension).
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceSubscriptionDetailsItemBillingThresholdsOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceSubscriptionDetailsItemBillingThresholdsOptions.cs
index 2e34768e10..442591b03f 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceSubscriptionDetailsItemBillingThresholdsOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceSubscriptionDetailsItemBillingThresholdsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceSubscriptionDetailsItemBillingThresholdsOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class InvoiceSubscriptionDetailsItemBillingThresholdsOptions : INestedOpt
         /// threshold</a>).
         /// </summary>
         [JsonProperty("usage_gte")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("usage_gte")]
+#endif
         public long? UsageGte { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceSubscriptionDetailsItemDiscountOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceSubscriptionDetailsItemDiscountOptions.cs
index 98773cf6e2..ab8b4a35e4 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceSubscriptionDetailsItemDiscountOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceSubscriptionDetailsItemDiscountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceSubscriptionDetailsItemDiscountOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class InvoiceSubscriptionDetailsItemDiscountOptions : INestedOptions
         /// ID of the coupon to create a new discount for.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
         /// ID of an existing discount on the object (or one of its ancestors) to reuse.
         /// </summary>
         [JsonProperty("discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+#endif
         public string Discount { get; set; }
 
         /// <summary>
         /// ID of the promotion code to create a new discount for.
         /// </summary>
         [JsonProperty("promotion_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotion_code")]
+#endif
         public string PromotionCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceSubscriptionDetailsItemOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceSubscriptionDetailsItemOptions.cs
index 0478a4b070..2b7287608a 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceSubscriptionDetailsItemOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceSubscriptionDetailsItemOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceSubscriptionDetailsItemOptions : INestedOptions, IHasId, IHasMetadata
     {
@@ -12,6 +15,9 @@ public class InvoiceSubscriptionDetailsItemOptions : INestedOptions, IHasId, IHa
         /// thresholds.
         /// </summary>
         [JsonProperty("billing_thresholds")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_thresholds")]
+#endif
         public InvoiceSubscriptionDetailsItemBillingThresholdsOptions BillingThresholds { get; set; }
 
         /// <summary>
@@ -20,24 +26,36 @@ public class InvoiceSubscriptionDetailsItemOptions : INestedOptions, IHasId, IHa
         /// meter attached.
         /// </summary>
         [JsonProperty("clear_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("clear_usage")]
+#endif
         public bool? ClearUsage { get; set; }
 
         /// <summary>
         /// A flag that, if set to <c>true</c>, will delete the specified item.
         /// </summary>
         [JsonProperty("deleted")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+#endif
         public bool? Deleted { get; set; }
 
         /// <summary>
         /// The coupons to redeem into discounts for the subscription item.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<InvoiceSubscriptionDetailsItemDiscountOptions> Discounts { get; set; }
 
         /// <summary>
         /// Subscription item to update.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
@@ -47,12 +65,18 @@ public class InvoiceSubscriptionDetailsItemOptions : INestedOptions, IHasId, IHa
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Plan ID for this item, as a string.
         /// </summary>
         [JsonProperty("plan")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("plan")]
+#endif
         public string Plan { get; set; }
 
         /// <summary>
@@ -61,6 +85,9 @@ public class InvoiceSubscriptionDetailsItemOptions : INestedOptions, IHasId, IHa
         /// <c>quantity</c> parameter is provided.
         /// </summary>
         [JsonProperty("price")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price")]
+#endif
         public string Price { get; set; }
 
         /// <summary>
@@ -68,12 +95,18 @@ public class InvoiceSubscriptionDetailsItemOptions : INestedOptions, IHasId, IHa
         /// object inline. One of <c>price</c> or <c>price_data</c> is required.
         /// </summary>
         [JsonProperty("price_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price_data")]
+#endif
         public InvoiceSubscriptionDetailsItemPriceDataOptions PriceData { get; set; }
 
         /// <summary>
         /// Quantity for this item.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         /// <summary>
@@ -84,6 +117,9 @@ public class InvoiceSubscriptionDetailsItemOptions : INestedOptions, IHasId, IHa
         /// tax rates.
         /// </summary>
         [JsonProperty("tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rates")]
+#endif
         public List<string> TaxRates { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceSubscriptionDetailsItemPriceDataOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceSubscriptionDetailsItemPriceDataOptions.cs
index ee95c29e65..f9a434ac3c 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceSubscriptionDetailsItemPriceDataOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceSubscriptionDetailsItemPriceDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceSubscriptionDetailsItemPriceDataOptions : INestedOptions
     {
@@ -11,18 +14,27 @@ public class InvoiceSubscriptionDetailsItemPriceDataOptions : INestedOptions
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// The ID of the product that this price will belong to.
         /// </summary>
         [JsonProperty("product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product")]
+#endif
         public string Product { get; set; }
 
         /// <summary>
         /// The recurring components of a price such as <c>interval</c> and <c>interval_count</c>.
         /// </summary>
         [JsonProperty("recurring")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("recurring")]
+#endif
         public InvoiceSubscriptionDetailsItemPriceDataRecurringOptions Recurring { get; set; }
 
         /// <summary>
@@ -35,6 +47,9 @@ public class InvoiceSubscriptionDetailsItemPriceDataOptions : INestedOptions
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
@@ -42,6 +57,9 @@ public class InvoiceSubscriptionDetailsItemPriceDataOptions : INestedOptions
         /// how much to charge.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
@@ -50,6 +68,9 @@ public class InvoiceSubscriptionDetailsItemPriceDataOptions : INestedOptions
         /// <c>unit_amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceSubscriptionDetailsItemPriceDataRecurringOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceSubscriptionDetailsItemPriceDataRecurringOptions.cs
index 0710377257..42bfeec755 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceSubscriptionDetailsItemPriceDataRecurringOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceSubscriptionDetailsItemPriceDataRecurringOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceSubscriptionDetailsItemPriceDataRecurringOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class InvoiceSubscriptionDetailsItemPriceDataRecurringOptions : INestedOp
         /// One of: <c>day</c>, <c>month</c>, <c>week</c>, or <c>year</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class InvoiceSubscriptionDetailsItemPriceDataRecurringOptions : INestedOp
         /// years interval allowed (3 years, 36 months, or 156 weeks).
         /// </summary>
         [JsonProperty("interval_count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_count")]
+#endif
         public long? IntervalCount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceSubscriptionDetailsOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceSubscriptionDetailsOptions.cs
index 65101b28cc..dd95901499 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceSubscriptionDetailsOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceSubscriptionDetailsOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceSubscriptionDetailsOptions : INestedOptions
     {
@@ -17,6 +20,10 @@ public class InvoiceSubscriptionDetailsOptions : INestedOptions
         /// </summary>
         [JsonProperty("billing_cycle_anchor")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_cycle_anchor")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, InvoiceSubscriptionDetailsBillingCycleAnchor> BillingCycleAnchor { get; set; }
 
         /// <summary>
@@ -27,6 +34,10 @@ public class InvoiceSubscriptionDetailsOptions : INestedOptions
         /// </summary>
         [JsonProperty("cancel_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancel_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? CancelAt { get; set; }
 
         /// <summary>
@@ -34,12 +45,18 @@ public class InvoiceSubscriptionDetailsOptions : INestedOptions
         /// (<c>current_period_end</c>). Defaults to <c>false</c>.
         /// </summary>
         [JsonProperty("cancel_at_period_end")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancel_at_period_end")]
+#endif
         public bool? CancelAtPeriodEnd { get; set; }
 
         /// <summary>
         /// This simulates the subscription being canceled or expired immediately.
         /// </summary>
         [JsonProperty("cancel_now")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancel_now")]
+#endif
         public bool? CancelNow { get; set; }
 
         /// <summary>
@@ -48,12 +65,18 @@ public class InvoiceSubscriptionDetailsOptions : INestedOptions
         /// have <c>tax_rates</c> set.
         /// </summary>
         [JsonProperty("default_tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_tax_rates")]
+#endif
         public List<string> DefaultTaxRates { get; set; }
 
         /// <summary>
         /// A list of up to 20 subscription items, each with an attached price.
         /// </summary>
         [JsonProperty("items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("items")]
+#endif
         public List<InvoiceSubscriptionDetailsItemOptions> Items { get; set; }
 
         /// <summary>
@@ -65,6 +88,9 @@ public class InvoiceSubscriptionDetailsOptions : INestedOptions
         /// One of: <c>always_invoice</c>, <c>create_prorations</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("proration_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("proration_behavior")]
+#endif
         public string ProrationBehavior { get; set; }
 
         /// <summary>
@@ -78,6 +104,10 @@ public class InvoiceSubscriptionDetailsOptions : INestedOptions
         /// </summary>
         [JsonProperty("proration_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("proration_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ProrationDate { get; set; }
 
         /// <summary>
@@ -85,6 +115,9 @@ public class InvoiceSubscriptionDetailsOptions : INestedOptions
         /// will preview the invoice that will be generated if the subscription is resumed.
         /// </summary>
         [JsonProperty("resume_at")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("resume_at")]
+#endif
         public string ResumeAt { get; set; }
 
         /// <summary>
@@ -92,6 +125,10 @@ public class InvoiceSubscriptionDetailsOptions : INestedOptions
         /// </summary>
         [JsonProperty("start_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("start_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? StartDate { get; set; }
 
         /// <summary>
@@ -101,6 +138,10 @@ public class InvoiceSubscriptionDetailsOptions : INestedOptions
         /// </summary>
         [JsonProperty("trial_end")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_end")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, InvoiceSubscriptionDetailsTrialEnd> TrialEnd { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceSubscriptionItemBillingThresholdsOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceSubscriptionItemBillingThresholdsOptions.cs
index 269a753bc1..283c4f89ac 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceSubscriptionItemBillingThresholdsOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceSubscriptionItemBillingThresholdsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceSubscriptionItemBillingThresholdsOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class InvoiceSubscriptionItemBillingThresholdsOptions : INestedOptions
         /// threshold</a>).
         /// </summary>
         [JsonProperty("usage_gte")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("usage_gte")]
+#endif
         public long? UsageGte { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceSubscriptionItemDiscountOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceSubscriptionItemDiscountOptions.cs
index 4d0f97405b..12a4b1702f 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceSubscriptionItemDiscountOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceSubscriptionItemDiscountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceSubscriptionItemDiscountOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class InvoiceSubscriptionItemDiscountOptions : INestedOptions
         /// ID of the coupon to create a new discount for.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
         /// ID of an existing discount on the object (or one of its ancestors) to reuse.
         /// </summary>
         [JsonProperty("discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+#endif
         public string Discount { get; set; }
 
         /// <summary>
         /// ID of the promotion code to create a new discount for.
         /// </summary>
         [JsonProperty("promotion_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotion_code")]
+#endif
         public string PromotionCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceSubscriptionItemOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceSubscriptionItemOptions.cs
index e7db32aaae..dabf0fd0aa 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceSubscriptionItemOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceSubscriptionItemOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceSubscriptionItemOptions : INestedOptions, IHasId, IHasMetadata
     {
@@ -12,6 +15,9 @@ public class InvoiceSubscriptionItemOptions : INestedOptions, IHasId, IHasMetada
         /// thresholds.
         /// </summary>
         [JsonProperty("billing_thresholds")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_thresholds")]
+#endif
         public InvoiceSubscriptionItemBillingThresholdsOptions BillingThresholds { get; set; }
 
         /// <summary>
@@ -20,24 +26,36 @@ public class InvoiceSubscriptionItemOptions : INestedOptions, IHasId, IHasMetada
         /// meter attached.
         /// </summary>
         [JsonProperty("clear_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("clear_usage")]
+#endif
         public bool? ClearUsage { get; set; }
 
         /// <summary>
         /// A flag that, if set to <c>true</c>, will delete the specified item.
         /// </summary>
         [JsonProperty("deleted")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+#endif
         public bool? Deleted { get; set; }
 
         /// <summary>
         /// The coupons to redeem into discounts for the subscription item.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<InvoiceSubscriptionItemDiscountOptions> Discounts { get; set; }
 
         /// <summary>
         /// Subscription item to update.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
@@ -47,12 +65,18 @@ public class InvoiceSubscriptionItemOptions : INestedOptions, IHasId, IHasMetada
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Plan ID for this item, as a string.
         /// </summary>
         [JsonProperty("plan")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("plan")]
+#endif
         public string Plan { get; set; }
 
         /// <summary>
@@ -61,6 +85,9 @@ public class InvoiceSubscriptionItemOptions : INestedOptions, IHasId, IHasMetada
         /// <c>quantity</c> parameter is provided.
         /// </summary>
         [JsonProperty("price")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price")]
+#endif
         public string Price { get; set; }
 
         /// <summary>
@@ -68,12 +95,18 @@ public class InvoiceSubscriptionItemOptions : INestedOptions, IHasId, IHasMetada
         /// object inline. One of <c>price</c> or <c>price_data</c> is required.
         /// </summary>
         [JsonProperty("price_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price_data")]
+#endif
         public InvoiceSubscriptionItemPriceDataOptions PriceData { get; set; }
 
         /// <summary>
         /// Quantity for this item.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         /// <summary>
@@ -84,6 +117,9 @@ public class InvoiceSubscriptionItemOptions : INestedOptions, IHasId, IHasMetada
         /// tax rates.
         /// </summary>
         [JsonProperty("tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rates")]
+#endif
         public List<string> TaxRates { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceSubscriptionItemPriceDataOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceSubscriptionItemPriceDataOptions.cs
index d03d0fc3bd..840e48b7e4 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceSubscriptionItemPriceDataOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceSubscriptionItemPriceDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceSubscriptionItemPriceDataOptions : INestedOptions
     {
@@ -11,18 +14,27 @@ public class InvoiceSubscriptionItemPriceDataOptions : INestedOptions
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// The ID of the product that this price will belong to.
         /// </summary>
         [JsonProperty("product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product")]
+#endif
         public string Product { get; set; }
 
         /// <summary>
         /// The recurring components of a price such as <c>interval</c> and <c>interval_count</c>.
         /// </summary>
         [JsonProperty("recurring")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("recurring")]
+#endif
         public InvoiceSubscriptionItemPriceDataRecurringOptions Recurring { get; set; }
 
         /// <summary>
@@ -35,6 +47,9 @@ public class InvoiceSubscriptionItemPriceDataOptions : INestedOptions
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
@@ -42,6 +57,9 @@ public class InvoiceSubscriptionItemPriceDataOptions : INestedOptions
         /// how much to charge.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
@@ -50,6 +68,9 @@ public class InvoiceSubscriptionItemPriceDataOptions : INestedOptions
         /// <c>unit_amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceSubscriptionItemPriceDataRecurringOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceSubscriptionItemPriceDataRecurringOptions.cs
index 6af3ba25bf..5abc22bad6 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceSubscriptionItemPriceDataRecurringOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceSubscriptionItemPriceDataRecurringOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceSubscriptionItemPriceDataRecurringOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class InvoiceSubscriptionItemPriceDataRecurringOptions : INestedOptions
         /// One of: <c>day</c>, <c>month</c>, <c>week</c>, or <c>year</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class InvoiceSubscriptionItemPriceDataRecurringOptions : INestedOptions
         /// years interval allowed (3 years, 36 months, or 156 weeks).
         /// </summary>
         [JsonProperty("interval_count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_count")]
+#endif
         public long? IntervalCount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceTransferDataOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceTransferDataOptions.cs
index f5a3d27615..e90f14e358 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceTransferDataOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceTransferDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceTransferDataOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class InvoiceTransferDataOptions : INestedOptions
         /// is set, the full amount is transferred.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
         /// ID of an existing, connected Stripe account.
         /// </summary>
         [JsonProperty("destination")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination")]
+#endif
         public string Destination { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceUpcomingInvoiceItemOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceUpcomingInvoiceItemOptions.cs
index d31808387c..c7d757e59d 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceUpcomingInvoiceItemOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceUpcomingInvoiceItemOptions.cs
@@ -2,51 +2,97 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
+
     using Stripe.Infrastructure;
 
     public class InvoiceUpcomingInvoiceItemOptions : INestedOptions, IHasMetadata
     {
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         [JsonProperty("discountable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discountable")]
+#endif
         public bool? Discountable { get; set; }
 
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<InvoiceItemDiscountOptions> Discounts { get; set; }
 
         [JsonProperty("invoiceitem")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoiceitem")]
+#endif
         [AllowNameMismatch]
         public string InvoiceItem { get; set; }
 
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         [JsonProperty("period")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("period")]
+#endif
         public InvoiceItemPeriodOptions Period { get; set; }
 
         [JsonProperty("price")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price")]
+#endif
         public string Price { get; set; }
 
         [JsonProperty("price_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price_data")]
+#endif
         public InvoiceItemPriceDataOptions PriceData { get; set; }
 
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         [JsonProperty("tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rates")]
+#endif
         public List<string> TaxRates { get; set; }
 
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceUpcomingLinesOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceUpcomingLinesOptions.cs
index e50e5f1735..9dfe546b3d 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceUpcomingLinesOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceUpcomingLinesOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceUpcomingLinesOptions : ListOptions
     {
@@ -12,6 +15,9 @@ public class InvoiceUpcomingLinesOptions : ListOptions
         /// Settings for automatic tax lookup for this invoice preview.
         /// </summary>
         [JsonProperty("automatic_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatic_tax")]
+#endif
         public InvoiceAutomaticTaxOptions AutomaticTax { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class InvoiceUpcomingLinesOptions : ListOptions
         /// instead.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class InvoiceUpcomingLinesOptions : ListOptions
         /// specified.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -35,6 +47,9 @@ public class InvoiceUpcomingLinesOptions : ListOptions
         /// <c>subscription</c>, or <c>schedule</c> must be set.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
@@ -43,6 +58,9 @@ public class InvoiceUpcomingLinesOptions : ListOptions
         /// <c>subscription</c>, or <c>schedule</c> must be set.
         /// </summary>
         [JsonProperty("customer_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_details")]
+#endif
         public InvoiceCustomerDetailsOptions CustomerDetails { get; set; }
 
         /// <summary>
@@ -52,12 +70,18 @@ public class InvoiceUpcomingLinesOptions : ListOptions
         /// avoid inheriting any discounts.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<InvoiceDiscountOptions> Discounts { get; set; }
 
         /// <summary>
         /// List of invoice items to add or update in the upcoming invoice preview (up to 250).
         /// </summary>
         [JsonProperty("invoice_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_items")]
+#endif
         public List<InvoiceUpcomingInvoiceItemOptions> InvoiceItems { get; set; }
 
         /// <summary>
@@ -65,6 +89,9 @@ public class InvoiceUpcomingLinesOptions : ListOptions
         /// branding and support information of the specified account.
         /// </summary>
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public InvoiceIssuerOptions Issuer { get; set; }
 
         /// <summary>
@@ -74,6 +101,9 @@ public class InvoiceUpcomingLinesOptions : ListOptions
         /// with Connect</a> documentation for details.
         /// </summary>
         [JsonProperty("on_behalf_of")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+#endif
         public string OnBehalfOf { get; set; }
 
         /// <summary>
@@ -82,6 +112,9 @@ public class InvoiceUpcomingLinesOptions : ListOptions
         /// One of: <c>next</c>, or <c>recurring</c>.
         /// </summary>
         [JsonProperty("preview_mode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preview_mode")]
+#endif
         public string PreviewMode { get; set; }
 
         /// <summary>
@@ -89,6 +122,9 @@ public class InvoiceUpcomingLinesOptions : ListOptions
         /// used with subscription or subscription fields.
         /// </summary>
         [JsonProperty("schedule")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("schedule")]
+#endif
         public string Schedule { get; set; }
 
         /// <summary>
@@ -96,6 +132,9 @@ public class InvoiceUpcomingLinesOptions : ListOptions
         /// <c>subscription</c> or <c>subscription_</c> prefixed fields.
         /// </summary>
         [JsonProperty("schedule_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("schedule_details")]
+#endif
         public InvoiceScheduleDetailsOptions ScheduleDetails { get; set; }
 
         /// <summary>
@@ -106,6 +145,9 @@ public class InvoiceUpcomingLinesOptions : ListOptions
         /// invoice from among the customer's subscriptions.
         /// </summary>
         [JsonProperty("subscription")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription")]
+#endif
         public string Subscription { get; set; }
 
         /// <summary>
@@ -119,6 +161,10 @@ public class InvoiceUpcomingLinesOptions : ListOptions
         /// </summary>
         [JsonProperty("subscription_billing_cycle_anchor")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_billing_cycle_anchor")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, SubscriptionBillingCycleAnchor> SubscriptionBillingCycleAnchor { get; set; }
 
         /// <summary>
@@ -130,6 +176,10 @@ public class InvoiceUpcomingLinesOptions : ListOptions
         /// </summary>
         [JsonProperty("subscription_cancel_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_cancel_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? SubscriptionCancelAt { get; set; }
 
         /// <summary>
@@ -139,6 +189,9 @@ public class InvoiceUpcomingLinesOptions : ListOptions
         /// <c>subscription_details.cancel_at_period_end</c> instead.
         /// </summary>
         [JsonProperty("subscription_cancel_at_period_end")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_cancel_at_period_end")]
+#endif
         public bool? SubscriptionCancelAtPeriodEnd { get; set; }
 
         /// <summary>
@@ -147,6 +200,9 @@ public class InvoiceUpcomingLinesOptions : ListOptions
         /// <c>subscription_details.cancel_now</c> instead.
         /// </summary>
         [JsonProperty("subscription_cancel_now")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_cancel_now")]
+#endif
         public bool? SubscriptionCancelNow { get; set; }
 
         /// <summary>
@@ -156,6 +212,9 @@ public class InvoiceUpcomingLinesOptions : ListOptions
         /// future API version. Use <c>subscription_details.default_tax_rates</c> instead.
         /// </summary>
         [JsonProperty("subscription_default_tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_default_tax_rates")]
+#endif
         public List<string> SubscriptionDefaultTaxRates { get; set; }
 
         /// <summary>
@@ -163,6 +222,9 @@ public class InvoiceUpcomingLinesOptions : ListOptions
         /// with <c>schedule</c> or <c>schedule_details</c> fields.
         /// </summary>
         [JsonProperty("subscription_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_details")]
+#endif
         public InvoiceSubscriptionDetailsOptions SubscriptionDetails { get; set; }
 
         /// <summary>
@@ -171,6 +233,9 @@ public class InvoiceUpcomingLinesOptions : ListOptions
         /// <c>subscription_details.items</c> instead.
         /// </summary>
         [JsonProperty("subscription_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_items")]
+#endif
         public List<InvoiceSubscriptionItemOptions> SubscriptionItems { get; set; }
 
         /// <summary>
@@ -184,6 +249,9 @@ public class InvoiceUpcomingLinesOptions : ListOptions
         /// One of: <c>always_invoice</c>, <c>create_prorations</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("subscription_proration_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_proration_behavior")]
+#endif
         public string SubscriptionProrationBehavior { get; set; }
 
         /// <summary>
@@ -199,6 +267,10 @@ public class InvoiceUpcomingLinesOptions : ListOptions
         /// </summary>
         [JsonProperty("subscription_proration_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_proration_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? SubscriptionProrationDate { get; set; }
 
         /// <summary>
@@ -208,6 +280,9 @@ public class InvoiceUpcomingLinesOptions : ListOptions
         /// <c>subscription_details.resume_at</c> instead.
         /// </summary>
         [JsonProperty("subscription_resume_at")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_resume_at")]
+#endif
         public string SubscriptionResumeAt { get; set; }
 
         /// <summary>
@@ -217,6 +292,10 @@ public class InvoiceUpcomingLinesOptions : ListOptions
         /// </summary>
         [JsonProperty("subscription_start_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_start_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? SubscriptionStartDate { get; set; }
 
         /// <summary>
@@ -227,6 +306,10 @@ public class InvoiceUpcomingLinesOptions : ListOptions
         /// </summary>
         [JsonProperty("subscription_trial_end")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_trial_end")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, SubscriptionTrialEnd> SubscriptionTrialEnd { get; set; }
 
         /// <summary>
@@ -238,6 +321,9 @@ public class InvoiceUpcomingLinesOptions : ListOptions
         /// subscriptions</a> to learn more.
         /// </summary>
         [JsonProperty("subscription_trial_from_plan")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_trial_from_plan")]
+#endif
         public bool? SubscriptionTrialFromPlan { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceUpdateLinesOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceUpdateLinesOptions.cs
index cff4293688..52dcfd7f11 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceUpdateLinesOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceUpdateLinesOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceUpdateLinesOptions : BaseOptions
     {
@@ -18,12 +21,18 @@ public class InvoiceUpdateLinesOptions : BaseOptions
         /// items, where any existing metadata on the invoice line is merged with the incoming data.
         /// </summary>
         [JsonProperty("invoice_metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_metadata")]
+#endif
         public Dictionary<string, string> InvoiceMetadata { get; set; }
 
         /// <summary>
         /// The line items to update.
         /// </summary>
         [JsonProperty("lines")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lines")]
+#endif
         public List<InvoiceLineOptions> Lines { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/InvoiceUpdateOptions.cs b/src/Stripe.net/Services/Invoices/InvoiceUpdateOptions.cs
index f2a87b68ce..ee5be5989d 100644
--- a/src/Stripe.net/Services/Invoices/InvoiceUpdateOptions.cs
+++ b/src/Stripe.net/Services/Invoices/InvoiceUpdateOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InvoiceUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -13,6 +16,9 @@ public class InvoiceUpdateOptions : BaseOptions, IHasMetadata
         /// draft.
         /// </summary>
         [JsonProperty("account_tax_ids")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_tax_ids")]
+#endif
         public List<string> AccountTaxIds { get; set; }
 
         /// <summary>
@@ -23,6 +29,9 @@ public class InvoiceUpdateOptions : BaseOptions, IHasMetadata
         /// href="https://stripe.com/docs/billing/invoices/connect#collecting-fees">documentation</a>.
         /// </summary>
         [JsonProperty("application_fee_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_amount")]
+#endif
         public long? ApplicationFeeAmount { get; set; }
 
         /// <summary>
@@ -31,12 +40,18 @@ public class InvoiceUpdateOptions : BaseOptions, IHasMetadata
         /// collection</a> of the invoice.
         /// </summary>
         [JsonProperty("auto_advance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("auto_advance")]
+#endif
         public bool? AutoAdvance { get; set; }
 
         /// <summary>
         /// Settings for automatic tax lookup for this invoice.
         /// </summary>
         [JsonProperty("automatic_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatic_tax")]
+#endif
         public InvoiceAutomaticTaxOptions AutomaticTax { get; set; }
 
         /// <summary>
@@ -46,6 +61,10 @@ public class InvoiceUpdateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("automatically_finalizes_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatically_finalizes_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? AutomaticallyFinalizesAt { get; set; }
 
         /// <summary>
@@ -54,6 +73,9 @@ public class InvoiceUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>charge_automatically</c>, or <c>send_invoice</c>.
         /// </summary>
         [JsonProperty("collection_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("collection_method")]
+#endif
         public string CollectionMethod { get; set; }
 
         /// <summary>
@@ -62,6 +84,9 @@ public class InvoiceUpdateOptions : BaseOptions, IHasMetadata
         /// field list on this invoice. Pass an empty string to remove previously-defined fields.
         /// </summary>
         [JsonProperty("custom_fields")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_fields")]
+#endif
         public List<InvoiceCustomFieldOptions> CustomFields { get; set; }
 
         /// <summary>
@@ -70,6 +95,9 @@ public class InvoiceUpdateOptions : BaseOptions, IHasMetadata
         /// <c>draft</c> invoices.
         /// </summary>
         [JsonProperty("days_until_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("days_until_due")]
+#endif
         public long? DaysUntilDue { get; set; }
 
         /// <summary>
@@ -78,6 +106,9 @@ public class InvoiceUpdateOptions : BaseOptions, IHasMetadata
         /// method, if any, or to the default payment method in the customer's invoice settings.
         /// </summary>
         [JsonProperty("default_payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_payment_method")]
+#endif
         public string DefaultPaymentMethod { get; set; }
 
         /// <summary>
@@ -86,6 +117,9 @@ public class InvoiceUpdateOptions : BaseOptions, IHasMetadata
         /// subscription's default source, if any, or to the customer's default source.
         /// </summary>
         [JsonProperty("default_source")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_source")]
+#endif
         public string DefaultSource { get; set; }
 
         /// <summary>
@@ -93,6 +127,9 @@ public class InvoiceUpdateOptions : BaseOptions, IHasMetadata
         /// Pass an empty string to remove previously-defined tax rates.
         /// </summary>
         [JsonProperty("default_tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_tax_rates")]
+#endif
         public List<string> DefaultTaxRates { get; set; }
 
         /// <summary>
@@ -100,6 +137,9 @@ public class InvoiceUpdateOptions : BaseOptions, IHasMetadata
         /// Referenced as 'memo' in the Dashboard.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -107,6 +147,9 @@ public class InvoiceUpdateOptions : BaseOptions, IHasMetadata
         /// previously-defined discounts.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<InvoiceDiscountOptions> Discounts { get; set; }
 
         /// <summary>
@@ -116,6 +159,10 @@ public class InvoiceUpdateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("due_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("due_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? DueDate { get; set; }
 
         /// <summary>
@@ -125,12 +172,19 @@ public class InvoiceUpdateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("effective_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("effective_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? EffectiveAt { get; set; }
 
         /// <summary>
         /// Footer to be displayed on the invoice.
         /// </summary>
         [JsonProperty("footer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("footer")]
+#endif
         public string Footer { get; set; }
 
         /// <summary>
@@ -138,6 +192,9 @@ public class InvoiceUpdateOptions : BaseOptions, IHasMetadata
         /// branding and support information of the specified account.
         /// </summary>
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public InvoiceIssuerOptions Issuer { get; set; }
 
         /// <summary>
@@ -147,6 +204,9 @@ public class InvoiceUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -158,6 +218,9 @@ public class InvoiceUpdateOptions : BaseOptions, IHasMetadata
         /// invoice numbers, Stripe handles this aspect of compliance for you automatically.
         /// </summary>
         [JsonProperty("number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("number")]
+#endif
         public string Number { get; set; }
 
         /// <summary>
@@ -167,6 +230,9 @@ public class InvoiceUpdateOptions : BaseOptions, IHasMetadata
         /// with Connect</a> documentation for details.
         /// </summary>
         [JsonProperty("on_behalf_of")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+#endif
         public string OnBehalfOf { get; set; }
 
         /// <summary>
@@ -174,6 +240,9 @@ public class InvoiceUpdateOptions : BaseOptions, IHasMetadata
         /// finalized.
         /// </summary>
         [JsonProperty("payment_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_settings")]
+#endif
         public InvoicePaymentSettingsOptions PaymentSettings { get; set; }
 
         /// <summary>
@@ -181,12 +250,18 @@ public class InvoiceUpdateOptions : BaseOptions, IHasMetadata
         /// customer-facing surfaces such as PDF and Hosted Invoice Page.
         /// </summary>
         [JsonProperty("rendering")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("rendering")]
+#endif
         public InvoiceRenderingOptions Rendering { get; set; }
 
         /// <summary>
         /// Settings for the cost of shipping for this invoice.
         /// </summary>
         [JsonProperty("shipping_cost")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_cost")]
+#endif
         public InvoiceShippingCostOptions ShippingCost { get; set; }
 
         /// <summary>
@@ -195,6 +270,9 @@ public class InvoiceUpdateOptions : BaseOptions, IHasMetadata
         /// customer.
         /// </summary>
         [JsonProperty("shipping_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_details")]
+#endif
         public InvoiceShippingDetailsOptions ShippingDetails { get; set; }
 
         /// <summary>
@@ -204,6 +282,9 @@ public class InvoiceUpdateOptions : BaseOptions, IHasMetadata
         /// subscription item's product's <c>statement_descriptor</c>.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
 
         /// <summary>
@@ -212,6 +293,9 @@ public class InvoiceUpdateOptions : BaseOptions, IHasMetadata
         /// if you POST an empty value.
         /// </summary>
         [JsonProperty("transfer_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_data")]
+#endif
         public InvoiceTransferDataOptions TransferData { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Invoices/UpcomingInvoiceOptions.cs b/src/Stripe.net/Services/Invoices/UpcomingInvoiceOptions.cs
index 4d7a4d72af..2fe1da749e 100644
--- a/src/Stripe.net/Services/Invoices/UpcomingInvoiceOptions.cs
+++ b/src/Stripe.net/Services/Invoices/UpcomingInvoiceOptions.cs
@@ -3,6 +3,10 @@ namespace Stripe
     using System;
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
+
     using Stripe.Infrastructure;
 
     public class UpcomingInvoiceOptions : BaseOptions
@@ -11,76 +15,151 @@ public class UpcomingInvoiceOptions : BaseOptions
         /// Settings for automatic tax lookup for this invoice.
         /// </summary>
         [JsonProperty("automatic_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatic_tax")]
+#endif
         public InvoiceAutomaticTaxOptions AutomaticTax { get; set; }
 
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
         /// Details about the customer you want to invoice.
         /// </summary>
         [JsonProperty("customer_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_details")]
+#endif
         public InvoiceCustomerDetailsOptions CustomerDetails { get; set; }
 
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<InvoiceDiscountOptions> Discounts { get; set; }
 
         [JsonProperty("invoice_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_items")]
+#endif
         public List<InvoiceUpcomingInvoiceItemOptions> InvoiceItems { get; set; }
 
         [JsonProperty("schedule")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("schedule")]
+#endif
         public string Schedule { get; set; }
 
         [JsonProperty("subscription")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription")]
+#endif
         public string Subscription { get; set; }
 
         [JsonProperty("subscription_billing_cycle_anchor")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_billing_cycle_anchor")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, SubscriptionBillingCycleAnchor> SubscriptionBillingCycleAnchor { get; set; }
 
         [JsonProperty("subscription_cancel_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_cancel_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? SubscriptionCancelAt { get; set; }
 
         [JsonProperty("subscription_cancel_at_period_end")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_cancel_at_period_end")]
+#endif
         public bool? SubscriptionCancelAtPeriodEnd { get; set; }
 
         [JsonProperty("subscription_cancel_now")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_cancel_now")]
+#endif
         public bool? SubscriptionCancelNow { get; set; }
 
         [JsonProperty("subscription_default_tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_default_tax_rates")]
+#endif
         public List<string> SubscriptionDefaultTaxRates { get; set; }
 
+        [JsonProperty("subscription_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_items")]
+#endif
+        public List<InvoiceSubscriptionItemOptions> SubscriptionItems { get; set; }
+
         [Obsolete("Use SubscriptionProrationBehavior instead.")]
         [JsonProperty("subscription_prorate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_prorate")]
+#endif
         public bool? SubscriptionProrate { get; set; }
 
         [JsonProperty("subscription_proration_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_proration_behavior")]
+#endif
         public string SubscriptionProrationBehavior { get; set; }
 
         [JsonProperty("subscription_proration_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_proration_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? SubscriptionProrationDate { get; set; }
 
         [JsonProperty("subscription_resume_at")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_resume_at")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, UpcomingInvoiceSubscriptionResumeAt> SubscriptionResumeAt { get; set; }
 
         [JsonProperty("subscription_start_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_start_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? SubscriptionStartDate { get; set; }
 
         [JsonProperty("subscription_trial_end")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_trial_end")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, SubscriptionTrialEnd> SubscriptionTrialEnd { get; set; }
 
         [JsonProperty("subscription_trial_from_plan")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_trial_from_plan")]
+#endif
         public bool? SubscriptionTrialFromPlan { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Authorizations/AuthorizationApproveOptions.cs b/src/Stripe.net/Services/Issuing/Authorizations/AuthorizationApproveOptions.cs
index 871c8c8b83..a812d63609 100644
--- a/src/Stripe.net/Services/Issuing/Authorizations/AuthorizationApproveOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Authorizations/AuthorizationApproveOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationApproveOptions : BaseOptions, IHasMetadata
     {
@@ -14,6 +17,9 @@ public class AuthorizationApproveOptions : BaseOptions, IHasMetadata
         /// decline an authorization request).
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -23,6 +29,9 @@ public class AuthorizationApproveOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Authorizations/AuthorizationDeclineOptions.cs b/src/Stripe.net/Services/Issuing/Authorizations/AuthorizationDeclineOptions.cs
index b829b22c9b..d406146619 100644
--- a/src/Stripe.net/Services/Issuing/Authorizations/AuthorizationDeclineOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Authorizations/AuthorizationDeclineOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationDeclineOptions : BaseOptions, IHasMetadata
     {
@@ -13,6 +16,9 @@ public class AuthorizationDeclineOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Authorizations/AuthorizationListOptions.cs b/src/Stripe.net/Services/Issuing/Authorizations/AuthorizationListOptions.cs
index 530f69bf99..a0e07763ee 100644
--- a/src/Stripe.net/Services/Issuing/Authorizations/AuthorizationListOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Authorizations/AuthorizationListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationListOptions : ListOptionsWithCreated
     {
@@ -9,12 +12,18 @@ public class AuthorizationListOptions : ListOptionsWithCreated
         /// Only return authorizations that belong to the given card.
         /// </summary>
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public string Card { get; set; }
 
         /// <summary>
         /// Only return authorizations that belong to the given cardholder.
         /// </summary>
         [JsonProperty("cardholder")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder")]
+#endif
         public string Cardholder { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class AuthorizationListOptions : ListOptionsWithCreated
         /// One of: <c>closed</c>, <c>pending</c>, or <c>reversed</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Authorizations/AuthorizationService.cs b/src/Stripe.net/Services/Issuing/Authorizations/AuthorizationService.cs
index a4d9dfb091..1eb711bbfb 100644
--- a/src/Stripe.net/Services/Issuing/Authorizations/AuthorizationService.cs
+++ b/src/Stripe.net/Services/Issuing/Authorizations/AuthorizationService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Issuing
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class AuthorizationService : Service<Authorization>,
+    public class AuthorizationService : Service,
         IListable<Authorization, AuthorizationListOptions>,
         IRetrievable<Authorization, AuthorizationGetOptions>,
         IUpdatable<Authorization, AuthorizationUpdateOptions>
diff --git a/src/Stripe.net/Services/Issuing/Authorizations/AuthorizationUpdateOptions.cs b/src/Stripe.net/Services/Issuing/Authorizations/AuthorizationUpdateOptions.cs
index c25e2c15a4..219fe69869 100644
--- a/src/Stripe.net/Services/Issuing/Authorizations/AuthorizationUpdateOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Authorizations/AuthorizationUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -13,6 +16,9 @@ public class AuthorizationUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Cardholders/CardholderBillingOptions.cs b/src/Stripe.net/Services/Issuing/Cardholders/CardholderBillingOptions.cs
index bc9b918b38..298d5213ad 100644
--- a/src/Stripe.net/Services/Issuing/Cardholders/CardholderBillingOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Cardholders/CardholderBillingOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardholderBillingOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class CardholderBillingOptions : INestedOptions
         /// The cardholder’s billing address.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public AddressOptions Address { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Cardholders/CardholderCompanyOptions.cs b/src/Stripe.net/Services/Issuing/Cardholders/CardholderCompanyOptions.cs
index a27aef7f6a..43a812171b 100644
--- a/src/Stripe.net/Services/Issuing/Cardholders/CardholderCompanyOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Cardholders/CardholderCompanyOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardholderCompanyOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class CardholderCompanyOptions : INestedOptions
         /// The entity's business ID number.
         /// </summary>
         [JsonProperty("tax_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_id")]
+#endif
         public string TaxId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Cardholders/CardholderCreateOptions.cs b/src/Stripe.net/Services/Issuing/Cardholders/CardholderCreateOptions.cs
index be03c73775..004b36b710 100644
--- a/src/Stripe.net/Services/Issuing/Cardholders/CardholderCreateOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Cardholders/CardholderCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardholderCreateOptions : BaseOptions, IHasMetadata
     {
@@ -10,24 +13,36 @@ public class CardholderCreateOptions : BaseOptions, IHasMetadata
         /// The cardholder's billing address.
         /// </summary>
         [JsonProperty("billing")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing")]
+#endif
         public CardholderBillingOptions Billing { get; set; }
 
         /// <summary>
         /// Additional information about a <c>company</c> cardholder.
         /// </summary>
         [JsonProperty("company")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("company")]
+#endif
         public CardholderCompanyOptions Company { get; set; }
 
         /// <summary>
         /// The cardholder's email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// Additional information about an <c>individual</c> cardholder.
         /// </summary>
         [JsonProperty("individual")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("individual")]
+#endif
         public CardholderIndividualOptions Individual { get; set; }
 
         /// <summary>
@@ -37,6 +52,9 @@ public class CardholderCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -45,6 +63,9 @@ public class CardholderCreateOptions : BaseOptions, IHasMetadata
         /// numbers.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -55,6 +76,9 @@ public class CardholderCreateOptions : BaseOptions, IHasMetadata
         /// Secure documentation</a> for more details.
         /// </summary>
         [JsonProperty("phone_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone_number")]
+#endif
         public string PhoneNumber { get; set; }
 
         /// <summary>
@@ -65,6 +89,9 @@ public class CardholderCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>de</c>, <c>en</c>, <c>es</c>, <c>fr</c>, or <c>it</c>.
         /// </summary>
         [JsonProperty("preferred_locales")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_locales")]
+#endif
         public List<string> PreferredLocales { get; set; }
 
         /// <summary>
@@ -73,6 +100,9 @@ public class CardholderCreateOptions : BaseOptions, IHasMetadata
         /// more details.
         /// </summary>
         [JsonProperty("spending_controls")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("spending_controls")]
+#endif
         public CardholderSpendingControlsOptions SpendingControls { get; set; }
 
         /// <summary>
@@ -81,6 +111,9 @@ public class CardholderCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>active</c>, or <c>inactive</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -90,6 +123,9 @@ public class CardholderCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>company</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Cardholders/CardholderIndividualCardIssuingOptions.cs b/src/Stripe.net/Services/Issuing/Cardholders/CardholderIndividualCardIssuingOptions.cs
index e57d00fafc..2631bc77b1 100644
--- a/src/Stripe.net/Services/Issuing/Cardholders/CardholderIndividualCardIssuingOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Cardholders/CardholderIndividualCardIssuingOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardholderIndividualCardIssuingOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class CardholderIndividualCardIssuingOptions : INestedOptions
         /// User Terms</a>. Required for cards backed by a Celtic program.
         /// </summary>
         [JsonProperty("user_terms_acceptance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_terms_acceptance")]
+#endif
         public CardholderIndividualCardIssuingUserTermsAcceptanceOptions UserTermsAcceptance { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Cardholders/CardholderIndividualCardIssuingUserTermsAcceptanceOptions.cs b/src/Stripe.net/Services/Issuing/Cardholders/CardholderIndividualCardIssuingUserTermsAcceptanceOptions.cs
index ead5dd5763..01394528e2 100644
--- a/src/Stripe.net/Services/Issuing/Cardholders/CardholderIndividualCardIssuingUserTermsAcceptanceOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Cardholders/CardholderIndividualCardIssuingUserTermsAcceptanceOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe.Issuing
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardholderIndividualCardIssuingUserTermsAcceptanceOptions : INestedOptions
     {
@@ -13,6 +16,10 @@ public class CardholderIndividualCardIssuingUserTermsAcceptanceOptions : INested
         /// </summary>
         [JsonProperty("date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? Date { get; set; }
 
         /// <summary>
@@ -20,6 +27,9 @@ public class CardholderIndividualCardIssuingUserTermsAcceptanceOptions : INested
         /// for Celtic Spend Card users.
         /// </summary>
         [JsonProperty("ip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip")]
+#endif
         public string Ip { get; set; }
 
         /// <summary>
@@ -27,6 +37,9 @@ public class CardholderIndividualCardIssuingUserTermsAcceptanceOptions : INested
         /// Terms.
         /// </summary>
         [JsonProperty("user_agent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_agent")]
+#endif
         public string UserAgent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Cardholders/CardholderIndividualDobOptions.cs b/src/Stripe.net/Services/Issuing/Cardholders/CardholderIndividualDobOptions.cs
index 3fa98a744d..a0739335bc 100644
--- a/src/Stripe.net/Services/Issuing/Cardholders/CardholderIndividualDobOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Cardholders/CardholderIndividualDobOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardholderIndividualDobOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class CardholderIndividualDobOptions : INestedOptions
         /// The day of birth, between 1 and 31.
         /// </summary>
         [JsonProperty("day")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("day")]
+#endif
         public long? Day { get; set; }
 
         /// <summary>
         /// The month of birth, between 1 and 12.
         /// </summary>
         [JsonProperty("month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("month")]
+#endif
         public long? Month { get; set; }
 
         /// <summary>
         /// The four-digit year of birth.
         /// </summary>
         [JsonProperty("year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("year")]
+#endif
         public long? Year { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Cardholders/CardholderIndividualOptions.cs b/src/Stripe.net/Services/Issuing/Cardholders/CardholderIndividualOptions.cs
index 6ebfb848a5..a5e6086bf3 100644
--- a/src/Stripe.net/Services/Issuing/Cardholders/CardholderIndividualOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Cardholders/CardholderIndividualOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardholderIndividualOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class CardholderIndividualOptions : INestedOptions
         /// Information related to the card_issuing program for this cardholder.
         /// </summary>
         [JsonProperty("card_issuing")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_issuing")]
+#endif
         public CardholderIndividualCardIssuingOptions CardIssuing { get; set; }
 
         /// <summary>
         /// The date of birth of this cardholder. Cardholders must be older than 13 years old.
         /// </summary>
         [JsonProperty("dob")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dob")]
+#endif
         public CardholderIndividualDobOptions Dob { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class CardholderIndividualOptions : INestedOptions
         /// apostrophes) or non-latin letters.
         /// </summary>
         [JsonProperty("first_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_name")]
+#endif
         public string FirstName { get; set; }
 
         /// <summary>
@@ -31,12 +43,18 @@ public class CardholderIndividualOptions : INestedOptions
         /// apostrophes) or non-latin letters.
         /// </summary>
         [JsonProperty("last_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_name")]
+#endif
         public string LastName { get; set; }
 
         /// <summary>
         /// Government-issued ID document for this cardholder.
         /// </summary>
         [JsonProperty("verification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification")]
+#endif
         public CardholderIndividualVerificationOptions Verification { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Cardholders/CardholderIndividualVerificationDocumentOptions.cs b/src/Stripe.net/Services/Issuing/Cardholders/CardholderIndividualVerificationDocumentOptions.cs
index dcdb4c8036..db3d47ef0b 100644
--- a/src/Stripe.net/Services/Issuing/Cardholders/CardholderIndividualVerificationDocumentOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Cardholders/CardholderIndividualVerificationDocumentOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardholderIndividualVerificationDocumentOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class CardholderIndividualVerificationDocumentOptions : INestedOptions
         /// upload</a> with a <c>purpose</c> value of <c>identity_document</c>.
         /// </summary>
         [JsonProperty("back")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("back")]
+#endif
         public string Back { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class CardholderIndividualVerificationDocumentOptions : INestedOptions
         /// upload</a> with a <c>purpose</c> value of <c>identity_document</c>.
         /// </summary>
         [JsonProperty("front")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("front")]
+#endif
         public string Front { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Cardholders/CardholderIndividualVerificationOptions.cs b/src/Stripe.net/Services/Issuing/Cardholders/CardholderIndividualVerificationOptions.cs
index d87787451f..6611a000ff 100644
--- a/src/Stripe.net/Services/Issuing/Cardholders/CardholderIndividualVerificationOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Cardholders/CardholderIndividualVerificationOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardholderIndividualVerificationOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class CardholderIndividualVerificationOptions : INestedOptions
         /// An identifying document, either a passport or local ID card.
         /// </summary>
         [JsonProperty("document")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("document")]
+#endif
         public CardholderIndividualVerificationDocumentOptions Document { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Cardholders/CardholderListOptions.cs b/src/Stripe.net/Services/Issuing/Cardholders/CardholderListOptions.cs
index 4c4ca76bbe..eaeb923fbc 100644
--- a/src/Stripe.net/Services/Issuing/Cardholders/CardholderListOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Cardholders/CardholderListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardholderListOptions : ListOptionsWithCreated
     {
@@ -9,12 +12,18 @@ public class CardholderListOptions : ListOptionsWithCreated
         /// Only return cardholders that have the given email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// Only return cardholders that have the given phone number.
         /// </summary>
         [JsonProperty("phone_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone_number")]
+#endif
         public string PhoneNumber { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class CardholderListOptions : ListOptionsWithCreated
         /// One of: <c>active</c>, <c>blocked</c>, or <c>inactive</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -31,6 +43,9 @@ public class CardholderListOptions : ListOptionsWithCreated
         /// One of: <c>company</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Cardholders/CardholderService.cs b/src/Stripe.net/Services/Issuing/Cardholders/CardholderService.cs
index bfa75de430..ce818896e6 100644
--- a/src/Stripe.net/Services/Issuing/Cardholders/CardholderService.cs
+++ b/src/Stripe.net/Services/Issuing/Cardholders/CardholderService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Issuing
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class CardholderService : Service<Cardholder>,
+    public class CardholderService : Service,
         ICreatable<Cardholder, CardholderCreateOptions>,
         IListable<Cardholder, CardholderListOptions>,
         IRetrievable<Cardholder, CardholderGetOptions>,
diff --git a/src/Stripe.net/Services/Issuing/Cardholders/CardholderSpendingControlsOptions.cs b/src/Stripe.net/Services/Issuing/Cardholders/CardholderSpendingControlsOptions.cs
index 47499af99f..e876cfc29a 100644
--- a/src/Stripe.net/Services/Issuing/Cardholders/CardholderSpendingControlsOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Cardholders/CardholderSpendingControlsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardholderSpendingControlsOptions : INestedOptions
     {
@@ -158,6 +161,9 @@ public class CardholderSpendingControlsOptions : INestedOptions
         /// <c>wrecking_and_salvage_yards</c>.
         /// </summary>
         [JsonProperty("allowed_categories")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allowed_categories")]
+#endif
         public List<string> AllowedCategories { get; set; }
 
         /// <summary>
@@ -167,6 +173,9 @@ public class CardholderSpendingControlsOptions : INestedOptions
         /// <c>blocked_merchant_countries</c>. Provide an empty value to unset this control.
         /// </summary>
         [JsonProperty("allowed_merchant_countries")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allowed_merchant_countries")]
+#endif
         public List<string> AllowedMerchantCountries { get; set; }
 
         /// <summary>
@@ -321,6 +330,9 @@ public class CardholderSpendingControlsOptions : INestedOptions
         /// <c>wrecking_and_salvage_yards</c>.
         /// </summary>
         [JsonProperty("blocked_categories")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("blocked_categories")]
+#endif
         public List<string> BlockedCategories { get; set; }
 
         /// <summary>
@@ -330,12 +342,18 @@ public class CardholderSpendingControlsOptions : INestedOptions
         /// this control.
         /// </summary>
         [JsonProperty("blocked_merchant_countries")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("blocked_merchant_countries")]
+#endif
         public List<string> BlockedMerchantCountries { get; set; }
 
         /// <summary>
         /// Limit spending with amount-based rules that apply across this cardholder's cards.
         /// </summary>
         [JsonProperty("spending_limits")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("spending_limits")]
+#endif
         public List<CardholderSpendingControlsSpendingLimitOptions> SpendingLimits { get; set; }
 
         /// <summary>
@@ -343,6 +361,9 @@ public class CardholderSpendingControlsOptions : INestedOptions
         /// currency.
         /// </summary>
         [JsonProperty("spending_limits_currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("spending_limits_currency")]
+#endif
         public string SpendingLimitsCurrency { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Cardholders/CardholderSpendingControlsSpendingLimitOptions.cs b/src/Stripe.net/Services/Issuing/Cardholders/CardholderSpendingControlsSpendingLimitOptions.cs
index e6ea705dfe..c59d829d10 100644
--- a/src/Stripe.net/Services/Issuing/Cardholders/CardholderSpendingControlsSpendingLimitOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Cardholders/CardholderSpendingControlsSpendingLimitOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardholderSpendingControlsSpendingLimitOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class CardholderSpendingControlsSpendingLimitOptions : INestedOptions
         /// Maximum amount allowed to spend per interval.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -163,6 +169,9 @@ public class CardholderSpendingControlsSpendingLimitOptions : INestedOptions
         /// <c>wrecking_and_salvage_yards</c>.
         /// </summary>
         [JsonProperty("categories")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("categories")]
+#endif
         public List<string> Categories { get; set; }
 
         /// <summary>
@@ -171,6 +180,9 @@ public class CardholderSpendingControlsSpendingLimitOptions : INestedOptions
         /// <c>weekly</c>, or <c>yearly</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Cardholders/CardholderUpdateOptions.cs b/src/Stripe.net/Services/Issuing/Cardholders/CardholderUpdateOptions.cs
index 785c8b9e2d..220b607d10 100644
--- a/src/Stripe.net/Services/Issuing/Cardholders/CardholderUpdateOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Cardholders/CardholderUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardholderUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -10,24 +13,36 @@ public class CardholderUpdateOptions : BaseOptions, IHasMetadata
         /// The cardholder's billing address.
         /// </summary>
         [JsonProperty("billing")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing")]
+#endif
         public CardholderBillingOptions Billing { get; set; }
 
         /// <summary>
         /// Additional information about a <c>company</c> cardholder.
         /// </summary>
         [JsonProperty("company")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("company")]
+#endif
         public CardholderCompanyOptions Company { get; set; }
 
         /// <summary>
         /// The cardholder's email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// Additional information about an <c>individual</c> cardholder.
         /// </summary>
         [JsonProperty("individual")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("individual")]
+#endif
         public CardholderIndividualOptions Individual { get; set; }
 
         /// <summary>
@@ -37,6 +52,9 @@ public class CardholderUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -45,6 +63,9 @@ public class CardholderUpdateOptions : BaseOptions, IHasMetadata
         /// documentation</a> for more details.
         /// </summary>
         [JsonProperty("phone_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone_number")]
+#endif
         public string PhoneNumber { get; set; }
 
         /// <summary>
@@ -55,6 +76,9 @@ public class CardholderUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>de</c>, <c>en</c>, <c>es</c>, <c>fr</c>, or <c>it</c>.
         /// </summary>
         [JsonProperty("preferred_locales")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_locales")]
+#endif
         public List<string> PreferredLocales { get; set; }
 
         /// <summary>
@@ -63,6 +87,9 @@ public class CardholderUpdateOptions : BaseOptions, IHasMetadata
         /// more details.
         /// </summary>
         [JsonProperty("spending_controls")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("spending_controls")]
+#endif
         public CardholderSpendingControlsOptions SpendingControls { get; set; }
 
         /// <summary>
@@ -70,6 +97,9 @@ public class CardholderUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>active</c>, or <c>inactive</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Cards/CardCreateOptions.cs b/src/Stripe.net/Services/Issuing/Cards/CardCreateOptions.cs
index d21317f02e..2eca0162df 100644
--- a/src/Stripe.net/Services/Issuing/Cards/CardCreateOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Cards/CardCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardCreateOptions : BaseOptions, IHasMetadata
     {
@@ -11,15 +14,24 @@ public class CardCreateOptions : BaseOptions, IHasMetadata
         /// object with which the card will be associated.
         /// </summary>
         [JsonProperty("cardholder")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder")]
+#endif
         public string Cardholder { get; set; }
 
         /// <summary>
         /// The currency for the card.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public string FinancialAccount { get; set; }
 
         /// <summary>
@@ -29,24 +41,36 @@ public class CardCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The personalization design object belonging to this card.
         /// </summary>
         [JsonProperty("personalization_design")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("personalization_design")]
+#endif
         public string PersonalizationDesign { get; set; }
 
         /// <summary>
         /// The desired PIN for this card.
         /// </summary>
         [JsonProperty("pin")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pin")]
+#endif
         public CardPinOptions Pin { get; set; }
 
         /// <summary>
         /// The card this is meant to be a replacement for (if any).
         /// </summary>
         [JsonProperty("replacement_for")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("replacement_for")]
+#endif
         public string ReplacementFor { get; set; }
 
         /// <summary>
@@ -55,18 +79,27 @@ public class CardCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>damaged</c>, <c>expired</c>, <c>lost</c>, or <c>stolen</c>.
         /// </summary>
         [JsonProperty("replacement_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("replacement_reason")]
+#endif
         public string ReplacementReason { get; set; }
 
         /// <summary>
         /// The second line to print on the card. Max length: 24 characters.
         /// </summary>
         [JsonProperty("second_line")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("second_line")]
+#endif
         public string SecondLine { get; set; }
 
         /// <summary>
         /// The address where the card will be shipped.
         /// </summary>
         [JsonProperty("shipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping")]
+#endif
         public CardShippingOptions Shipping { get; set; }
 
         /// <summary>
@@ -75,6 +108,9 @@ public class CardCreateOptions : BaseOptions, IHasMetadata
         /// more details.
         /// </summary>
         [JsonProperty("spending_controls")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("spending_controls")]
+#endif
         public CardSpendingControlsOptions SpendingControls { get; set; }
 
         /// <summary>
@@ -83,6 +119,9 @@ public class CardCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>active</c>, or <c>inactive</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -90,6 +129,9 @@ public class CardCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>physical</c>, or <c>virtual</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Cards/CardListOptions.cs b/src/Stripe.net/Services/Issuing/Cards/CardListOptions.cs
index a489512642..dd823dcc35 100644
--- a/src/Stripe.net/Services/Issuing/Cards/CardListOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Cards/CardListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardListOptions : ListOptionsWithCreated
     {
@@ -9,27 +12,42 @@ public class CardListOptions : ListOptionsWithCreated
         /// Only return cards belonging to the Cardholder with the provided ID.
         /// </summary>
         [JsonProperty("cardholder")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder")]
+#endif
         public string Cardholder { get; set; }
 
         /// <summary>
         /// Only return cards that have the given expiration month.
         /// </summary>
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public long? ExpMonth { get; set; }
 
         /// <summary>
         /// Only return cards that have the given expiration year.
         /// </summary>
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public long? ExpYear { get; set; }
 
         /// <summary>
         /// Only return cards that have the given last four digits.
         /// </summary>
         [JsonProperty("last4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last4")]
+#endif
         public string Last4 { get; set; }
 
         [JsonProperty("personalization_design")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("personalization_design")]
+#endif
         public string PersonalizationDesign { get; set; }
 
         /// <summary>
@@ -38,6 +56,9 @@ public class CardListOptions : ListOptionsWithCreated
         /// One of: <c>active</c>, <c>canceled</c>, or <c>inactive</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -45,6 +66,9 @@ public class CardListOptions : ListOptionsWithCreated
         /// One of: <c>physical</c>, or <c>virtual</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Cards/CardPinOptions.cs b/src/Stripe.net/Services/Issuing/Cards/CardPinOptions.cs
index 0242c42d41..fe7b587a3e 100644
--- a/src/Stripe.net/Services/Issuing/Cards/CardPinOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Cards/CardPinOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardPinOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class CardPinOptions : INestedOptions
         /// The card's desired new PIN, encrypted under Stripe's public key.
         /// </summary>
         [JsonProperty("encrypted_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("encrypted_number")]
+#endif
         public string EncryptedNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Cards/CardService.cs b/src/Stripe.net/Services/Issuing/Cards/CardService.cs
index 5d42027467..c5b3055bf8 100644
--- a/src/Stripe.net/Services/Issuing/Cards/CardService.cs
+++ b/src/Stripe.net/Services/Issuing/Cards/CardService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Issuing
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class CardService : Service<Card>,
+    public class CardService : Service,
         ICreatable<Card, CardCreateOptions>,
         IListable<Card, CardListOptions>,
         IRetrievable<Card, CardGetOptions>,
diff --git a/src/Stripe.net/Services/Issuing/Cards/CardShippingAddressValidationOptions.cs b/src/Stripe.net/Services/Issuing/Cards/CardShippingAddressValidationOptions.cs
index e9428e1c90..c993fad78d 100644
--- a/src/Stripe.net/Services/Issuing/Cards/CardShippingAddressValidationOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Cards/CardShippingAddressValidationOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardShippingAddressValidationOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class CardShippingAddressValidationOptions : INestedOptions
         /// <c>validation_and_normalization</c>.
         /// </summary>
         [JsonProperty("mode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mode")]
+#endif
         public string Mode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Cards/CardShippingCustomsOptions.cs b/src/Stripe.net/Services/Issuing/Cards/CardShippingCustomsOptions.cs
index 77fcb278ae..2ca36a6c94 100644
--- a/src/Stripe.net/Services/Issuing/Cards/CardShippingCustomsOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Cards/CardShippingCustomsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardShippingCustomsOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class CardShippingCustomsOptions : INestedOptions
         /// Required for bulk shipments to Europe.
         /// </summary>
         [JsonProperty("eori_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eori_number")]
+#endif
         public string EoriNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Cards/CardShippingOptions.cs b/src/Stripe.net/Services/Issuing/Cards/CardShippingOptions.cs
index 0daf3cf6ff..e06f4fa8a8 100644
--- a/src/Stripe.net/Services/Issuing/Cards/CardShippingOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Cards/CardShippingOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardShippingOptions : INestedOptions
     {
@@ -9,36 +12,54 @@ public class CardShippingOptions : INestedOptions
         /// The address that the card is shipped to.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public AddressOptions Address { get; set; }
 
         /// <summary>
         /// Address validation settings.
         /// </summary>
         [JsonProperty("address_validation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_validation")]
+#endif
         public CardShippingAddressValidationOptions AddressValidation { get; set; }
 
         /// <summary>
         /// Customs information for the shipment.
         /// </summary>
         [JsonProperty("customs")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customs")]
+#endif
         public CardShippingCustomsOptions Customs { get; set; }
 
         /// <summary>
         /// The name printed on the shipping label when shipping the card.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// Phone number of the recipient of the shipment.
         /// </summary>
         [JsonProperty("phone_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone_number")]
+#endif
         public string PhoneNumber { get; set; }
 
         /// <summary>
         /// Whether a signature is required for card delivery.
         /// </summary>
         [JsonProperty("require_signature")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("require_signature")]
+#endif
         public bool? RequireSignature { get; set; }
 
         /// <summary>
@@ -46,6 +67,9 @@ public class CardShippingOptions : INestedOptions
         /// One of: <c>express</c>, <c>priority</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("service")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("service")]
+#endif
         public string Service { get; set; }
 
         /// <summary>
@@ -53,6 +77,9 @@ public class CardShippingOptions : INestedOptions
         /// One of: <c>bulk</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Cards/CardSpendingControlsOptions.cs b/src/Stripe.net/Services/Issuing/Cards/CardSpendingControlsOptions.cs
index 8a4bef454c..16b1e13a88 100644
--- a/src/Stripe.net/Services/Issuing/Cards/CardSpendingControlsOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Cards/CardSpendingControlsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardSpendingControlsOptions : INestedOptions
     {
@@ -158,6 +161,9 @@ public class CardSpendingControlsOptions : INestedOptions
         /// <c>wrecking_and_salvage_yards</c>.
         /// </summary>
         [JsonProperty("allowed_categories")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allowed_categories")]
+#endif
         public List<string> AllowedCategories { get; set; }
 
         /// <summary>
@@ -167,6 +173,9 @@ public class CardSpendingControlsOptions : INestedOptions
         /// <c>blocked_merchant_countries</c>. Provide an empty value to unset this control.
         /// </summary>
         [JsonProperty("allowed_merchant_countries")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allowed_merchant_countries")]
+#endif
         public List<string> AllowedMerchantCountries { get; set; }
 
         /// <summary>
@@ -321,6 +330,9 @@ public class CardSpendingControlsOptions : INestedOptions
         /// <c>wrecking_and_salvage_yards</c>.
         /// </summary>
         [JsonProperty("blocked_categories")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("blocked_categories")]
+#endif
         public List<string> BlockedCategories { get; set; }
 
         /// <summary>
@@ -330,6 +342,9 @@ public class CardSpendingControlsOptions : INestedOptions
         /// this control.
         /// </summary>
         [JsonProperty("blocked_merchant_countries")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("blocked_merchant_countries")]
+#endif
         public List<string> BlockedMerchantCountries { get; set; }
 
         /// <summary>
@@ -338,6 +353,9 @@ public class CardSpendingControlsOptions : INestedOptions
         /// card, up the chain).
         /// </summary>
         [JsonProperty("spending_limits")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("spending_limits")]
+#endif
         public List<CardSpendingControlsSpendingLimitOptions> SpendingLimits { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Cards/CardSpendingControlsSpendingLimitOptions.cs b/src/Stripe.net/Services/Issuing/Cards/CardSpendingControlsSpendingLimitOptions.cs
index c0664fe7c9..be19eb293a 100644
--- a/src/Stripe.net/Services/Issuing/Cards/CardSpendingControlsSpendingLimitOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Cards/CardSpendingControlsSpendingLimitOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardSpendingControlsSpendingLimitOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class CardSpendingControlsSpendingLimitOptions : INestedOptions
         /// Maximum amount allowed to spend per interval.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -163,6 +169,9 @@ public class CardSpendingControlsSpendingLimitOptions : INestedOptions
         /// <c>wrecking_and_salvage_yards</c>.
         /// </summary>
         [JsonProperty("categories")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("categories")]
+#endif
         public List<string> Categories { get; set; }
 
         /// <summary>
@@ -171,6 +180,9 @@ public class CardSpendingControlsSpendingLimitOptions : INestedOptions
         /// <c>weekly</c>, or <c>yearly</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Cards/CardUpdateOptions.cs b/src/Stripe.net/Services/Issuing/Cards/CardUpdateOptions.cs
index bde72309a5..a1ff6de337 100644
--- a/src/Stripe.net/Services/Issuing/Cards/CardUpdateOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Cards/CardUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CardUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -11,6 +14,9 @@ public class CardUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>lost</c>, or <c>stolen</c>.
         /// </summary>
         [JsonProperty("cancellation_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancellation_reason")]
+#endif
         public string CancellationReason { get; set; }
 
         /// <summary>
@@ -20,21 +26,33 @@ public class CardUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         [JsonProperty("personalization_design")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("personalization_design")]
+#endif
         public string PersonalizationDesign { get; set; }
 
         /// <summary>
         /// The desired new PIN for this card.
         /// </summary>
         [JsonProperty("pin")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pin")]
+#endif
         public CardPinOptions Pin { get; set; }
 
         /// <summary>
         /// Updated shipping information for the card.
         /// </summary>
         [JsonProperty("shipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping")]
+#endif
         public CardShippingOptions Shipping { get; set; }
 
         /// <summary>
@@ -43,6 +61,9 @@ public class CardUpdateOptions : BaseOptions, IHasMetadata
         /// more details.
         /// </summary>
         [JsonProperty("spending_controls")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("spending_controls")]
+#endif
         public CardSpendingControlsOptions SpendingControls { get; set; }
 
         /// <summary>
@@ -53,6 +74,9 @@ public class CardUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>active</c>, <c>canceled</c>, or <c>inactive</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Disputes/DisputeCreateOptions.cs b/src/Stripe.net/Services/Issuing/Disputes/DisputeCreateOptions.cs
index 4c6eb76ce3..692c079dc7 100644
--- a/src/Stripe.net/Services/Issuing/Disputes/DisputeCreateOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Disputes/DisputeCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeCreateOptions : BaseOptions, IHasMetadata
     {
@@ -12,12 +15,18 @@ public class DisputeCreateOptions : BaseOptions, IHasMetadata
         /// not set, defaults to the full transaction amount.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
         /// Evidence provided for the dispute.
         /// </summary>
         [JsonProperty("evidence")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("evidence")]
+#endif
         public DisputeEvidenceOptions Evidence { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class DisputeCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -34,12 +46,18 @@ public class DisputeCreateOptions : BaseOptions, IHasMetadata
         /// FinancialAccounts, use <c>treasury.received_debit</c>.
         /// </summary>
         [JsonProperty("transaction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction")]
+#endif
         public string Transaction { get; set; }
 
         /// <summary>
         /// Params for disputes related to Treasury FinancialAccounts.
         /// </summary>
         [JsonProperty("treasury")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("treasury")]
+#endif
         public DisputeTreasuryOptions Treasury { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceCanceledOptions.cs b/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceCanceledOptions.cs
index 65d5f5db39..8d6975f8cf 100644
--- a/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceCanceledOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceCanceledOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe.Issuing
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeEvidenceCanceledOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class DisputeEvidenceCanceledOptions : INestedOptions
         /// Additional documentation supporting the dispute.
         /// </summary>
         [JsonProperty("additional_documentation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("additional_documentation")]
+#endif
         public string AdditionalDocumentation { get; set; }
 
         /// <summary>
@@ -19,18 +25,28 @@ public class DisputeEvidenceCanceledOptions : INestedOptions
         /// </summary>
         [JsonProperty("canceled_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("canceled_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? CanceledAt { get; set; }
 
         /// <summary>
         /// Whether the cardholder was provided with a cancellation policy.
         /// </summary>
         [JsonProperty("cancellation_policy_provided")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancellation_policy_provided")]
+#endif
         public bool? CancellationPolicyProvided { get; set; }
 
         /// <summary>
         /// Reason for canceling the order.
         /// </summary>
         [JsonProperty("cancellation_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancellation_reason")]
+#endif
         public string CancellationReason { get; set; }
 
         /// <summary>
@@ -38,18 +54,28 @@ public class DisputeEvidenceCanceledOptions : INestedOptions
         /// </summary>
         [JsonProperty("expected_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expected_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpectedAt { get; set; }
 
         /// <summary>
         /// Explanation of why the cardholder is disputing this transaction.
         /// </summary>
         [JsonProperty("explanation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("explanation")]
+#endif
         public string Explanation { get; set; }
 
         /// <summary>
         /// Description of the merchandise or service that was purchased.
         /// </summary>
         [JsonProperty("product_description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_description")]
+#endif
         public string ProductDescription { get; set; }
 
         /// <summary>
@@ -57,6 +83,9 @@ public class DisputeEvidenceCanceledOptions : INestedOptions
         /// One of: <c>merchandise</c>, or <c>service</c>.
         /// </summary>
         [JsonProperty("product_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_type")]
+#endif
         public string ProductType { get; set; }
 
         /// <summary>
@@ -64,6 +93,9 @@ public class DisputeEvidenceCanceledOptions : INestedOptions
         /// One of: <c>merchant_rejected</c>, or <c>successful</c>.
         /// </summary>
         [JsonProperty("return_status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_status")]
+#endif
         public string ReturnStatus { get; set; }
 
         /// <summary>
@@ -71,6 +103,10 @@ public class DisputeEvidenceCanceledOptions : INestedOptions
         /// </summary>
         [JsonProperty("returned_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("returned_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ReturnedAt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceDuplicateOptions.cs b/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceDuplicateOptions.cs
index 29aebf3ba7..42ed298bf9 100644
--- a/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceDuplicateOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceDuplicateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeEvidenceDuplicateOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class DisputeEvidenceDuplicateOptions : INestedOptions
         /// Additional documentation supporting the dispute.
         /// </summary>
         [JsonProperty("additional_documentation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("additional_documentation")]
+#endif
         public string AdditionalDocumentation { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class DisputeEvidenceDuplicateOptions : INestedOptions
         /// the card statement showing that the product had already been paid for.
         /// </summary>
         [JsonProperty("card_statement")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_statement")]
+#endif
         public string CardStatement { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class DisputeEvidenceDuplicateOptions : INestedOptions
         /// the receipt showing that the product had been paid for in cash.
         /// </summary>
         [JsonProperty("cash_receipt")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cash_receipt")]
+#endif
         public string CashReceipt { get; set; }
 
         /// <summary>
@@ -31,12 +43,18 @@ public class DisputeEvidenceDuplicateOptions : INestedOptions
         /// the front and back of the check that was used to pay for the product.
         /// </summary>
         [JsonProperty("check_image")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("check_image")]
+#endif
         public string CheckImage { get; set; }
 
         /// <summary>
         /// Explanation of why the cardholder is disputing this transaction.
         /// </summary>
         [JsonProperty("explanation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("explanation")]
+#endif
         public string Explanation { get; set; }
 
         /// <summary>
@@ -44,6 +62,9 @@ public class DisputeEvidenceDuplicateOptions : INestedOptions
         /// or more transactions that are copies of each other, this is original undisputed one.
         /// </summary>
         [JsonProperty("original_transaction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("original_transaction")]
+#endif
         public string OriginalTransaction { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceFraudulentOptions.cs b/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceFraudulentOptions.cs
index aa6ead1c85..408102b813 100644
--- a/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceFraudulentOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceFraudulentOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeEvidenceFraudulentOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class DisputeEvidenceFraudulentOptions : INestedOptions
         /// Additional documentation supporting the dispute.
         /// </summary>
         [JsonProperty("additional_documentation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("additional_documentation")]
+#endif
         public string AdditionalDocumentation { get; set; }
 
         /// <summary>
         /// Explanation of why the cardholder is disputing this transaction.
         /// </summary>
         [JsonProperty("explanation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("explanation")]
+#endif
         public string Explanation { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceMerchandiseNotAsDescribedOptions.cs b/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceMerchandiseNotAsDescribedOptions.cs
index 89c5619514..cc337c576a 100644
--- a/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceMerchandiseNotAsDescribedOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceMerchandiseNotAsDescribedOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe.Issuing
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeEvidenceMerchandiseNotAsDescribedOptions : INestedOptions
     {
@@ -12,12 +15,18 @@ public class DisputeEvidenceMerchandiseNotAsDescribedOptions : INestedOptions
         /// Additional documentation supporting the dispute.
         /// </summary>
         [JsonProperty("additional_documentation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("additional_documentation")]
+#endif
         public string AdditionalDocumentation { get; set; }
 
         /// <summary>
         /// Explanation of why the cardholder is disputing this transaction.
         /// </summary>
         [JsonProperty("explanation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("explanation")]
+#endif
         public string Explanation { get; set; }
 
         /// <summary>
@@ -25,12 +34,19 @@ public class DisputeEvidenceMerchandiseNotAsDescribedOptions : INestedOptions
         /// </summary>
         [JsonProperty("received_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("received_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ReceivedAt { get; set; }
 
         /// <summary>
         /// Description of the cardholder's attempt to return the product.
         /// </summary>
         [JsonProperty("return_description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_description")]
+#endif
         public string ReturnDescription { get; set; }
 
         /// <summary>
@@ -38,6 +54,9 @@ public class DisputeEvidenceMerchandiseNotAsDescribedOptions : INestedOptions
         /// One of: <c>merchant_rejected</c>, or <c>successful</c>.
         /// </summary>
         [JsonProperty("return_status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_status")]
+#endif
         public string ReturnStatus { get; set; }
 
         /// <summary>
@@ -45,6 +64,10 @@ public class DisputeEvidenceMerchandiseNotAsDescribedOptions : INestedOptions
         /// </summary>
         [JsonProperty("returned_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("returned_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ReturnedAt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceNoValidAuthorizationOptions.cs b/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceNoValidAuthorizationOptions.cs
index 1eed1af727..6b5c032e1a 100644
--- a/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceNoValidAuthorizationOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceNoValidAuthorizationOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeEvidenceNoValidAuthorizationOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class DisputeEvidenceNoValidAuthorizationOptions : INestedOptions
         /// Additional documentation supporting the dispute.
         /// </summary>
         [JsonProperty("additional_documentation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("additional_documentation")]
+#endif
         public string AdditionalDocumentation { get; set; }
 
         /// <summary>
         /// Explanation of why the cardholder is disputing this transaction.
         /// </summary>
         [JsonProperty("explanation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("explanation")]
+#endif
         public string Explanation { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceNotReceivedOptions.cs b/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceNotReceivedOptions.cs
index a84239bc23..368bc884cb 100644
--- a/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceNotReceivedOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceNotReceivedOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe.Issuing
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeEvidenceNotReceivedOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class DisputeEvidenceNotReceivedOptions : INestedOptions
         /// Additional documentation supporting the dispute.
         /// </summary>
         [JsonProperty("additional_documentation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("additional_documentation")]
+#endif
         public string AdditionalDocumentation { get; set; }
 
         /// <summary>
@@ -19,18 +25,28 @@ public class DisputeEvidenceNotReceivedOptions : INestedOptions
         /// </summary>
         [JsonProperty("expected_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expected_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpectedAt { get; set; }
 
         /// <summary>
         /// Explanation of why the cardholder is disputing this transaction.
         /// </summary>
         [JsonProperty("explanation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("explanation")]
+#endif
         public string Explanation { get; set; }
 
         /// <summary>
         /// Description of the merchandise or service that was purchased.
         /// </summary>
         [JsonProperty("product_description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_description")]
+#endif
         public string ProductDescription { get; set; }
 
         /// <summary>
@@ -38,6 +54,9 @@ public class DisputeEvidenceNotReceivedOptions : INestedOptions
         /// One of: <c>merchandise</c>, or <c>service</c>.
         /// </summary>
         [JsonProperty("product_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_type")]
+#endif
         public string ProductType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceOptions.cs b/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceOptions.cs
index 0f37e4faf4..83d190ad29 100644
--- a/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeEvidenceOptions : INestedOptions
     {
@@ -9,42 +12,63 @@ public class DisputeEvidenceOptions : INestedOptions
         /// Evidence provided when <c>reason</c> is 'canceled'.
         /// </summary>
         [JsonProperty("canceled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("canceled")]
+#endif
         public DisputeEvidenceCanceledOptions Canceled { get; set; }
 
         /// <summary>
         /// Evidence provided when <c>reason</c> is 'duplicate'.
         /// </summary>
         [JsonProperty("duplicate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("duplicate")]
+#endif
         public DisputeEvidenceDuplicateOptions Duplicate { get; set; }
 
         /// <summary>
         /// Evidence provided when <c>reason</c> is 'fraudulent'.
         /// </summary>
         [JsonProperty("fraudulent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fraudulent")]
+#endif
         public DisputeEvidenceFraudulentOptions Fraudulent { get; set; }
 
         /// <summary>
         /// Evidence provided when <c>reason</c> is 'merchandise_not_as_described'.
         /// </summary>
         [JsonProperty("merchandise_not_as_described")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("merchandise_not_as_described")]
+#endif
         public DisputeEvidenceMerchandiseNotAsDescribedOptions MerchandiseNotAsDescribed { get; set; }
 
         /// <summary>
         /// Evidence provided when <c>reason</c> is 'no_valid_authorization'.
         /// </summary>
         [JsonProperty("no_valid_authorization")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("no_valid_authorization")]
+#endif
         public DisputeEvidenceNoValidAuthorizationOptions NoValidAuthorization { get; set; }
 
         /// <summary>
         /// Evidence provided when <c>reason</c> is 'not_received'.
         /// </summary>
         [JsonProperty("not_received")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("not_received")]
+#endif
         public DisputeEvidenceNotReceivedOptions NotReceived { get; set; }
 
         /// <summary>
         /// Evidence provided when <c>reason</c> is 'other'.
         /// </summary>
         [JsonProperty("other")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("other")]
+#endif
         public DisputeEvidenceOtherOptions Other { get; set; }
 
         /// <summary>
@@ -55,12 +79,18 @@ public class DisputeEvidenceOptions : INestedOptions
         /// <c>other</c>, or <c>service_not_as_described</c>.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
 
         /// <summary>
         /// Evidence provided when <c>reason</c> is 'service_not_as_described'.
         /// </summary>
         [JsonProperty("service_not_as_described")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("service_not_as_described")]
+#endif
         public DisputeEvidenceServiceNotAsDescribedOptions ServiceNotAsDescribed { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceOtherOptions.cs b/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceOtherOptions.cs
index 3e13f7810e..14fee1f00d 100644
--- a/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceOtherOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceOtherOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeEvidenceOtherOptions : INestedOptions
     {
@@ -10,18 +13,27 @@ public class DisputeEvidenceOtherOptions : INestedOptions
         /// Additional documentation supporting the dispute.
         /// </summary>
         [JsonProperty("additional_documentation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("additional_documentation")]
+#endif
         public string AdditionalDocumentation { get; set; }
 
         /// <summary>
         /// Explanation of why the cardholder is disputing this transaction.
         /// </summary>
         [JsonProperty("explanation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("explanation")]
+#endif
         public string Explanation { get; set; }
 
         /// <summary>
         /// Description of the merchandise or service that was purchased.
         /// </summary>
         [JsonProperty("product_description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_description")]
+#endif
         public string ProductDescription { get; set; }
 
         /// <summary>
@@ -29,6 +41,9 @@ public class DisputeEvidenceOtherOptions : INestedOptions
         /// One of: <c>merchandise</c>, or <c>service</c>.
         /// </summary>
         [JsonProperty("product_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_type")]
+#endif
         public string ProductType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceServiceNotAsDescribedOptions.cs b/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceServiceNotAsDescribedOptions.cs
index da96aa68ad..65fc63603d 100644
--- a/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceServiceNotAsDescribedOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Disputes/DisputeEvidenceServiceNotAsDescribedOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe.Issuing
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeEvidenceServiceNotAsDescribedOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class DisputeEvidenceServiceNotAsDescribedOptions : INestedOptions
         /// Additional documentation supporting the dispute.
         /// </summary>
         [JsonProperty("additional_documentation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("additional_documentation")]
+#endif
         public string AdditionalDocumentation { get; set; }
 
         /// <summary>
@@ -19,18 +25,28 @@ public class DisputeEvidenceServiceNotAsDescribedOptions : INestedOptions
         /// </summary>
         [JsonProperty("canceled_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("canceled_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? CanceledAt { get; set; }
 
         /// <summary>
         /// Reason for canceling the order.
         /// </summary>
         [JsonProperty("cancellation_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancellation_reason")]
+#endif
         public string CancellationReason { get; set; }
 
         /// <summary>
         /// Explanation of why the cardholder is disputing this transaction.
         /// </summary>
         [JsonProperty("explanation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("explanation")]
+#endif
         public string Explanation { get; set; }
 
         /// <summary>
@@ -38,6 +54,10 @@ public class DisputeEvidenceServiceNotAsDescribedOptions : INestedOptions
         /// </summary>
         [JsonProperty("received_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("received_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ReceivedAt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Disputes/DisputeListOptions.cs b/src/Stripe.net/Services/Issuing/Disputes/DisputeListOptions.cs
index 77acd37bc3..49fa34e0eb 100644
--- a/src/Stripe.net/Services/Issuing/Disputes/DisputeListOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Disputes/DisputeListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeListOptions : ListOptionsWithCreated
     {
@@ -11,12 +14,18 @@ public class DisputeListOptions : ListOptionsWithCreated
         /// <c>won</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
         /// Select the Issuing dispute for the given transaction.
         /// </summary>
         [JsonProperty("transaction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction")]
+#endif
         public string Transaction { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Disputes/DisputeService.cs b/src/Stripe.net/Services/Issuing/Disputes/DisputeService.cs
index cfe4dd8759..16746f0364 100644
--- a/src/Stripe.net/Services/Issuing/Disputes/DisputeService.cs
+++ b/src/Stripe.net/Services/Issuing/Disputes/DisputeService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Issuing
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class DisputeService : Service<Dispute>,
+    public class DisputeService : Service,
         ICreatable<Dispute, DisputeCreateOptions>,
         IListable<Dispute, DisputeListOptions>,
         IRetrievable<Dispute, DisputeGetOptions>,
diff --git a/src/Stripe.net/Services/Issuing/Disputes/DisputeSubmitOptions.cs b/src/Stripe.net/Services/Issuing/Disputes/DisputeSubmitOptions.cs
index efa8bec608..466cba6b2c 100644
--- a/src/Stripe.net/Services/Issuing/Disputes/DisputeSubmitOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Disputes/DisputeSubmitOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeSubmitOptions : BaseOptions, IHasMetadata
     {
@@ -13,6 +16,9 @@ public class DisputeSubmitOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Disputes/DisputeTreasuryOptions.cs b/src/Stripe.net/Services/Issuing/Disputes/DisputeTreasuryOptions.cs
index 001c247d75..30c4e3302e 100644
--- a/src/Stripe.net/Services/Issuing/Disputes/DisputeTreasuryOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Disputes/DisputeTreasuryOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeTreasuryOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class DisputeTreasuryOptions : INestedOptions
         /// The ID of the ReceivedDebit to initiate an Issuings dispute for.
         /// </summary>
         [JsonProperty("received_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("received_debit")]
+#endif
         public string ReceivedDebit { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Disputes/DisputeUpdateOptions.cs b/src/Stripe.net/Services/Issuing/Disputes/DisputeUpdateOptions.cs
index 743a85ab44..07216afa8b 100644
--- a/src/Stripe.net/Services/Issuing/Disputes/DisputeUpdateOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Disputes/DisputeUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DisputeUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -11,12 +14,18 @@ public class DisputeUpdateOptions : BaseOptions, IHasMetadata
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
         /// Evidence provided for the dispute.
         /// </summary>
         [JsonProperty("evidence")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("evidence")]
+#endif
         public DisputeEvidenceOptions Evidence { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class DisputeUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/PersonalizationDesigns/PersonalizationDesignCarrierTextOptions.cs b/src/Stripe.net/Services/Issuing/PersonalizationDesigns/PersonalizationDesignCarrierTextOptions.cs
index 9809b8f688..07730a44af 100644
--- a/src/Stripe.net/Services/Issuing/PersonalizationDesigns/PersonalizationDesignCarrierTextOptions.cs
+++ b/src/Stripe.net/Services/Issuing/PersonalizationDesigns/PersonalizationDesignCarrierTextOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PersonalizationDesignCarrierTextOptions : INestedOptions
     {
@@ -9,24 +12,36 @@ public class PersonalizationDesignCarrierTextOptions : INestedOptions
         /// The footer body text of the carrier letter.
         /// </summary>
         [JsonProperty("footer_body")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("footer_body")]
+#endif
         public string FooterBody { get; set; }
 
         /// <summary>
         /// The footer title text of the carrier letter.
         /// </summary>
         [JsonProperty("footer_title")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("footer_title")]
+#endif
         public string FooterTitle { get; set; }
 
         /// <summary>
         /// The header body text of the carrier letter.
         /// </summary>
         [JsonProperty("header_body")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("header_body")]
+#endif
         public string HeaderBody { get; set; }
 
         /// <summary>
         /// The header title text of the carrier letter.
         /// </summary>
         [JsonProperty("header_title")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("header_title")]
+#endif
         public string HeaderTitle { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/PersonalizationDesigns/PersonalizationDesignCreateOptions.cs b/src/Stripe.net/Services/Issuing/PersonalizationDesigns/PersonalizationDesignCreateOptions.cs
index 41f14a8b1b..7686e01a91 100644
--- a/src/Stripe.net/Services/Issuing/PersonalizationDesigns/PersonalizationDesignCreateOptions.cs
+++ b/src/Stripe.net/Services/Issuing/PersonalizationDesigns/PersonalizationDesignCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PersonalizationDesignCreateOptions : BaseOptions, IHasMetadata
     {
@@ -11,12 +14,18 @@ public class PersonalizationDesignCreateOptions : BaseOptions, IHasMetadata
         /// have a <c>purpose</c> value of <c>issuing_logo</c>.
         /// </summary>
         [JsonProperty("card_logo")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_logo")]
+#endif
         public string CardLogo { get; set; }
 
         /// <summary>
         /// Hash containing carrier text, for use with physical bundles that support carrier text.
         /// </summary>
         [JsonProperty("carrier_text")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("carrier_text")]
+#endif
         public PersonalizationDesignCarrierTextOptions CarrierText { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PersonalizationDesignCreateOptions : BaseOptions, IHasMetadata
         /// This may be up to 200 characters.
         /// </summary>
         [JsonProperty("lookup_key")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lookup_key")]
+#endif
         public string LookupKey { get; set; }
 
         /// <summary>
@@ -33,18 +45,27 @@ public class PersonalizationDesignCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Friendly display name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// The physical bundle object belonging to this personalization design.
         /// </summary>
         [JsonProperty("physical_bundle")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("physical_bundle")]
+#endif
         public string PhysicalBundle { get; set; }
 
         /// <summary>
@@ -52,6 +73,9 @@ public class PersonalizationDesignCreateOptions : BaseOptions, IHasMetadata
         /// not specified.
         /// </summary>
         [JsonProperty("preferences")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferences")]
+#endif
         public PersonalizationDesignPreferencesOptions Preferences { get; set; }
 
         /// <summary>
@@ -59,6 +83,9 @@ public class PersonalizationDesignCreateOptions : BaseOptions, IHasMetadata
         /// design, and assign it to this personalization design.
         /// </summary>
         [JsonProperty("transfer_lookup_key")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_lookup_key")]
+#endif
         public bool? TransferLookupKey { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/PersonalizationDesigns/PersonalizationDesignListOptions.cs b/src/Stripe.net/Services/Issuing/PersonalizationDesigns/PersonalizationDesignListOptions.cs
index d7440d43e4..e89167086d 100644
--- a/src/Stripe.net/Services/Issuing/PersonalizationDesigns/PersonalizationDesignListOptions.cs
+++ b/src/Stripe.net/Services/Issuing/PersonalizationDesigns/PersonalizationDesignListOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PersonalizationDesignListOptions : ListOptions
     {
@@ -10,12 +13,18 @@ public class PersonalizationDesignListOptions : ListOptions
         /// Only return personalization designs with the given lookup keys.
         /// </summary>
         [JsonProperty("lookup_keys")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lookup_keys")]
+#endif
         public List<string> LookupKeys { get; set; }
 
         /// <summary>
         /// Only return personalization designs with the given preferences.
         /// </summary>
         [JsonProperty("preferences")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferences")]
+#endif
         public PersonalizationDesignPreferencesOptions Preferences { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class PersonalizationDesignListOptions : ListOptions
         /// One of: <c>active</c>, <c>inactive</c>, <c>rejected</c>, or <c>review</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/PersonalizationDesigns/PersonalizationDesignPreferencesOptions.cs b/src/Stripe.net/Services/Issuing/PersonalizationDesigns/PersonalizationDesignPreferencesOptions.cs
index 6ce44ace6f..1b32f70121 100644
--- a/src/Stripe.net/Services/Issuing/PersonalizationDesigns/PersonalizationDesignPreferencesOptions.cs
+++ b/src/Stripe.net/Services/Issuing/PersonalizationDesigns/PersonalizationDesignPreferencesOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PersonalizationDesignPreferencesOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class PersonalizationDesignPreferencesOptions : INestedOptions
         /// design is set as the default design.
         /// </summary>
         [JsonProperty("is_default")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("is_default")]
+#endif
         public bool? IsDefault { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class PersonalizationDesignPreferencesOptions : INestedOptions
         /// This parameter is only applicable to connected accounts.
         /// </summary>
         [JsonProperty("is_platform_default")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("is_platform_default")]
+#endif
         public bool? IsPlatformDefault { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/PersonalizationDesigns/PersonalizationDesignService.cs b/src/Stripe.net/Services/Issuing/PersonalizationDesigns/PersonalizationDesignService.cs
index 9e554b3eca..6ae8624c5b 100644
--- a/src/Stripe.net/Services/Issuing/PersonalizationDesigns/PersonalizationDesignService.cs
+++ b/src/Stripe.net/Services/Issuing/PersonalizationDesigns/PersonalizationDesignService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Issuing
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class PersonalizationDesignService : Service<PersonalizationDesign>,
+    public class PersonalizationDesignService : Service,
         ICreatable<PersonalizationDesign, PersonalizationDesignCreateOptions>,
         IListable<PersonalizationDesign, PersonalizationDesignListOptions>,
         IRetrievable<PersonalizationDesign, PersonalizationDesignGetOptions>,
diff --git a/src/Stripe.net/Services/Issuing/PersonalizationDesigns/PersonalizationDesignUpdateOptions.cs b/src/Stripe.net/Services/Issuing/PersonalizationDesigns/PersonalizationDesignUpdateOptions.cs
index ab50b04adb..ca5de498f7 100644
--- a/src/Stripe.net/Services/Issuing/PersonalizationDesigns/PersonalizationDesignUpdateOptions.cs
+++ b/src/Stripe.net/Services/Issuing/PersonalizationDesigns/PersonalizationDesignUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PersonalizationDesignUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -11,12 +14,18 @@ public class PersonalizationDesignUpdateOptions : BaseOptions, IHasMetadata
         /// have a <c>purpose</c> value of <c>issuing_logo</c>.
         /// </summary>
         [JsonProperty("card_logo")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_logo")]
+#endif
         public string CardLogo { get; set; }
 
         /// <summary>
         /// Hash containing carrier text, for use with physical bundles that support carrier text.
         /// </summary>
         [JsonProperty("carrier_text")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("carrier_text")]
+#endif
         public PersonalizationDesignCarrierTextOptions CarrierText { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PersonalizationDesignUpdateOptions : BaseOptions, IHasMetadata
         /// This may be up to 200 characters.
         /// </summary>
         [JsonProperty("lookup_key")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lookup_key")]
+#endif
         public string LookupKey { get; set; }
 
         /// <summary>
@@ -33,18 +45,27 @@ public class PersonalizationDesignUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Friendly display name. Providing an empty string will set the field to null.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// The physical bundle object belonging to this personalization design.
         /// </summary>
         [JsonProperty("physical_bundle")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("physical_bundle")]
+#endif
         public string PhysicalBundle { get; set; }
 
         /// <summary>
@@ -52,6 +73,9 @@ public class PersonalizationDesignUpdateOptions : BaseOptions, IHasMetadata
         /// not specified.
         /// </summary>
         [JsonProperty("preferences")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferences")]
+#endif
         public PersonalizationDesignPreferencesOptions Preferences { get; set; }
 
         /// <summary>
@@ -59,6 +83,9 @@ public class PersonalizationDesignUpdateOptions : BaseOptions, IHasMetadata
         /// design, and assign it to this personalization design.
         /// </summary>
         [JsonProperty("transfer_lookup_key")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_lookup_key")]
+#endif
         public bool? TransferLookupKey { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/PhysicalBundles/PhysicalBundleListOptions.cs b/src/Stripe.net/Services/Issuing/PhysicalBundles/PhysicalBundleListOptions.cs
index 4900269ad2..8e560ea329 100644
--- a/src/Stripe.net/Services/Issuing/PhysicalBundles/PhysicalBundleListOptions.cs
+++ b/src/Stripe.net/Services/Issuing/PhysicalBundles/PhysicalBundleListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PhysicalBundleListOptions : ListOptions
     {
@@ -10,6 +13,9 @@ public class PhysicalBundleListOptions : ListOptions
         /// One of: <c>active</c>, <c>inactive</c>, or <c>review</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PhysicalBundleListOptions : ListOptions
         /// One of: <c>custom</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/PhysicalBundles/PhysicalBundleService.cs b/src/Stripe.net/Services/Issuing/PhysicalBundles/PhysicalBundleService.cs
index 248aacff5a..5471eabd49 100644
--- a/src/Stripe.net/Services/Issuing/PhysicalBundles/PhysicalBundleService.cs
+++ b/src/Stripe.net/Services/Issuing/PhysicalBundles/PhysicalBundleService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Issuing
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class PhysicalBundleService : Service<PhysicalBundle>,
+    public class PhysicalBundleService : Service,
         IListable<PhysicalBundle, PhysicalBundleListOptions>,
         IRetrievable<PhysicalBundle, PhysicalBundleGetOptions>
     {
diff --git a/src/Stripe.net/Services/Issuing/Tokens/TokenListOptions.cs b/src/Stripe.net/Services/Issuing/Tokens/TokenListOptions.cs
index 8435a22e22..a2d01c1a7a 100644
--- a/src/Stripe.net/Services/Issuing/Tokens/TokenListOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Tokens/TokenListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenListOptions : ListOptionsWithCreated
     {
@@ -9,6 +12,9 @@ public class TokenListOptions : ListOptionsWithCreated
         /// The Issuing card identifier to list tokens for.
         /// </summary>
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public string Card { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class TokenListOptions : ListOptionsWithCreated
         /// One of: <c>active</c>, <c>deleted</c>, <c>requested</c>, or <c>suspended</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Tokens/TokenService.cs b/src/Stripe.net/Services/Issuing/Tokens/TokenService.cs
index 55fed08927..352e228e6a 100644
--- a/src/Stripe.net/Services/Issuing/Tokens/TokenService.cs
+++ b/src/Stripe.net/Services/Issuing/Tokens/TokenService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Issuing
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class TokenService : Service<Token>,
+    public class TokenService : Service,
         IListable<Token, TokenListOptions>,
         IRetrievable<Token, TokenGetOptions>,
         IUpdatable<Token, TokenUpdateOptions>
diff --git a/src/Stripe.net/Services/Issuing/Tokens/TokenUpdateOptions.cs b/src/Stripe.net/Services/Issuing/Tokens/TokenUpdateOptions.cs
index fb92e9ca93..8be457c4ac 100644
--- a/src/Stripe.net/Services/Issuing/Tokens/TokenUpdateOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Tokens/TokenUpdateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenUpdateOptions : BaseOptions
     {
@@ -10,6 +13,9 @@ public class TokenUpdateOptions : BaseOptions
         /// One of: <c>active</c>, <c>deleted</c>, or <c>suspended</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Transactions/TransactionListOptions.cs b/src/Stripe.net/Services/Issuing/Transactions/TransactionListOptions.cs
index 5c26d76df0..3b037e0606 100644
--- a/src/Stripe.net/Services/Issuing/Transactions/TransactionListOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Transactions/TransactionListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionListOptions : ListOptionsWithCreated
     {
@@ -9,12 +12,18 @@ public class TransactionListOptions : ListOptionsWithCreated
         /// Only return transactions that belong to the given card.
         /// </summary>
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public string Card { get; set; }
 
         /// <summary>
         /// Only return transactions that belong to the given cardholder.
         /// </summary>
         [JsonProperty("cardholder")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder")]
+#endif
         public string Cardholder { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class TransactionListOptions : ListOptionsWithCreated
         /// One of: <c>capture</c>, or <c>refund</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Issuing/Transactions/TransactionService.cs b/src/Stripe.net/Services/Issuing/Transactions/TransactionService.cs
index e1e80d2d9f..a2f36ce72f 100644
--- a/src/Stripe.net/Services/Issuing/Transactions/TransactionService.cs
+++ b/src/Stripe.net/Services/Issuing/Transactions/TransactionService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Issuing
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class TransactionService : Service<Transaction>,
+    public class TransactionService : Service,
         IListable<Transaction, TransactionListOptions>,
         IRetrievable<Transaction, TransactionGetOptions>,
         IUpdatable<Transaction, TransactionUpdateOptions>
diff --git a/src/Stripe.net/Services/Issuing/Transactions/TransactionUpdateOptions.cs b/src/Stripe.net/Services/Issuing/Transactions/TransactionUpdateOptions.cs
index 63fc850556..2d687c6943 100644
--- a/src/Stripe.net/Services/Issuing/Transactions/TransactionUpdateOptions.cs
+++ b/src/Stripe.net/Services/Issuing/Transactions/TransactionUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -13,6 +16,9 @@ public class TransactionUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Mandates/MandateService.cs b/src/Stripe.net/Services/Mandates/MandateService.cs
index 8c52ee9fa4..1caec5ad91 100644
--- a/src/Stripe.net/Services/Mandates/MandateService.cs
+++ b/src/Stripe.net/Services/Mandates/MandateService.cs
@@ -7,7 +7,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class MandateService : Service<Mandate>,
+    public class MandateService : Service,
         IRetrievable<Mandate, MandateGetOptions>
     {
         public MandateService()
diff --git a/src/Stripe.net/Services/OAuth/OAuthAuthorizeUrlOptions.cs b/src/Stripe.net/Services/OAuth/OAuthAuthorizeUrlOptions.cs
index a07963ca22..d43ab0e537 100644
--- a/src/Stripe.net/Services/OAuth/OAuthAuthorizeUrlOptions.cs
+++ b/src/Stripe.net/Services/OAuth/OAuthAuthorizeUrlOptions.cs
@@ -2,6 +2,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OAuthAuthorizeUrlOptions : BaseOptions
     {
@@ -10,6 +13,9 @@ public class OAuthAuthorizeUrlOptions : BaseOptions
         /// already connected. Defaults to <c>false</c>.
         /// </summary>
         [JsonProperty("always_prompt")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("always_prompt")]
+#endif
         public bool? AlwaysPrompt { get; set; }
 
         /// <summary>
@@ -17,10 +23,16 @@ public class OAuthAuthorizeUrlOptions : BaseOptions
         /// <see href="https://dashboard.stripe.com/account/applications/settings">application settings</see>.
         /// </summary>
         [JsonProperty("client_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("client_id")]
+#endif
         public string ClientId { get; set; }
 
         /// <summary>The only option at the moment is <c>code</c>.</summary>
         [JsonProperty("response_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("response_type")]
+#endif
         public string ResponseType { get; set; } = "code";
 
         /// <summary>
@@ -40,6 +52,9 @@ public class OAuthAuthorizeUrlOptions : BaseOptions
         /// </para>
         /// </summary>
         [JsonProperty("redirect_uri")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("redirect_uri")]
+#endif
         public string RedirectUri { get; set; }
 
         /// <summary>
@@ -47,12 +62,18 @@ public class OAuthAuthorizeUrlOptions : BaseOptions
         /// Defaults to <c>read_only</c>.
         /// </summary>
         [JsonProperty("scope")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("scope")]
+#endif
         public string Scope { get; set; }
 
         /// <summary>
         /// An arbitrary string value we will pass back to you, useful for CSRF protection.
         /// </summary>
         [JsonProperty("state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("state")]
+#endif
         public string State { get; set; }
 
         /// <summary>
@@ -68,10 +89,16 @@ public class OAuthAuthorizeUrlOptions : BaseOptions
         /// </para>
         /// </summary>
         [JsonProperty("stripe_landing")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("stripe_landing")]
+#endif
         public string StripeLanding { get; set; }
 
         /// <summary>Prefilled details in the account form for new users.</summary>
         [JsonProperty("stripe_user")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("stripe_user")]
+#endif
         public OAuthAuthorizeUrlStripeUserOptions StripeUser { get; set; }
 
         /// <summary>
@@ -83,6 +110,9 @@ public class OAuthAuthorizeUrlOptions : BaseOptions
         /// <see cref="SuggestedCapabilities"/> parameter in your OAuth link.
         /// </summary>
         [JsonProperty("suggested_capabilities")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("suggested_capabilities")]
+#endif
         public List<string> SuggestedCapabilities { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/OAuth/OAuthAuthorizeUrlStripeUserOptions.cs b/src/Stripe.net/Services/OAuth/OAuthAuthorizeUrlStripeUserOptions.cs
index 21d8007eca..cf8f612d94 100644
--- a/src/Stripe.net/Services/OAuth/OAuthAuthorizeUrlStripeUserOptions.cs
+++ b/src/Stripe.net/Services/OAuth/OAuthAuthorizeUrlStripeUserOptions.cs
@@ -1,6 +1,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OAuthAuthorizeUrlStripeUserOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class OAuthAuthorizeUrlStripeUserOptions : INestedOptions
         /// </para>
         /// </summary>
         [JsonProperty("block_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("block_kana")]
+#endif
         public string BlockKana { get; set; }
 
         /// <summary>
@@ -22,6 +28,9 @@ public class OAuthAuthorizeUrlStripeUserOptions : INestedOptions
         /// </para>
         /// </summary>
         [JsonProperty("block_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("block_kanji")]
+#endif
         public string BlockKanji { get; set; }
 
         /// <summary>
@@ -32,6 +41,9 @@ public class OAuthAuthorizeUrlStripeUserOptions : INestedOptions
         /// </para>
         /// </summary>
         [JsonProperty("building_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("building_kana")]
+#endif
         public string BuildingKana { get; set; }
 
         /// <summary>
@@ -42,10 +54,16 @@ public class OAuthAuthorizeUrlStripeUserOptions : INestedOptions
         /// </para>
         /// </summary>
         [JsonProperty("building_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("building_kanji")]
+#endif
         public string BuildingKanji { get; set; }
 
         /// <summary>The legal name of the business, also used for the statement descriptor.</summary>
         [JsonProperty("business_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("business_name")]
+#endif
         public string BusinessName { get; set; }
 
         /// <summary>
@@ -56,6 +74,9 @@ public class OAuthAuthorizeUrlStripeUserOptions : INestedOptions
         /// </para>
         /// </summary>
         [JsonProperty("business_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("business_type")]
+#endif
         public string BusinessType { get; set; }
 
         /// <summary>
@@ -66,6 +87,9 @@ public class OAuthAuthorizeUrlStripeUserOptions : INestedOptions
         /// </para>
         /// </summary>
         [JsonProperty("city")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("city")]
+#endif
         public string City { get; set; }
 
         /// <summary>
@@ -73,6 +97,9 @@ public class OAuthAuthorizeUrlStripeUserOptions : INestedOptions
         /// <para>Must be a country that Stripe currently supports.</para>
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -84,6 +111,9 @@ public class OAuthAuthorizeUrlStripeUserOptions : INestedOptions
         /// <para>Must prefill <see cref="Country"/> with the corresponding country.</para>
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -97,6 +127,9 @@ public class OAuthAuthorizeUrlStripeUserOptions : INestedOptions
         /// </para>
         /// </summary>
         [JsonProperty("dob_day")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dob_day")]
+#endif
         public long? DobDay { get; set; }
 
         /// <summary>
@@ -110,6 +143,9 @@ public class OAuthAuthorizeUrlStripeUserOptions : INestedOptions
         /// </para>
         /// </summary>
         [JsonProperty("dob_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dob_month")]
+#endif
         public long? DobMonth { get; set; }
 
         /// <summary>
@@ -123,15 +159,24 @@ public class OAuthAuthorizeUrlStripeUserOptions : INestedOptions
         /// </para>
         /// </summary>
         [JsonProperty("dob_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dob_year")]
+#endif
         public long? DobYear { get; set; }
 
         /// <summary>The user's email address. Must be a valid email format.</summary>
         /// <remarks>Recommended.</remarks>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>First name of the person who will be filling out a Stripe application.</summary>
         [JsonProperty("first_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_name")]
+#endif
         public string FirstName { get; set; }
 
         /// <summary>
@@ -145,6 +190,9 @@ public class OAuthAuthorizeUrlStripeUserOptions : INestedOptions
         /// </para>
         /// </summary>
         [JsonProperty("first_name_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_name_kana")]
+#endif
         public string FirstNameKana { get; set; }
 
         /// <summary>
@@ -158,6 +206,9 @@ public class OAuthAuthorizeUrlStripeUserOptions : INestedOptions
         /// </para>
         /// </summary>
         [JsonProperty("first_name_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_name_kanji")]
+#endif
         public string FirstNameKanji { get; set; }
 
         /// <summary>
@@ -171,10 +222,16 @@ public class OAuthAuthorizeUrlStripeUserOptions : INestedOptions
         /// </para>
         /// </summary>
         [JsonProperty("gender")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gender")]
+#endif
         public string Gender { get; set; }
 
         /// <summary>Last name of the person who will be filling out a Stripe application.</summary>
         [JsonProperty("last_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_name")]
+#endif
         public string LastName { get; set; }
 
         /// <summary>
@@ -188,6 +245,9 @@ public class OAuthAuthorizeUrlStripeUserOptions : INestedOptions
         /// </para>
         /// </summary>
         [JsonProperty("last_name_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_name_kana")]
+#endif
         public string LastNameKana { get; set; }
 
         /// <summary>
@@ -201,6 +261,9 @@ public class OAuthAuthorizeUrlStripeUserOptions : INestedOptions
         /// </para>
         /// </summary>
         [JsonProperty("last_name_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_name_kanji")]
+#endif
         public string LastNameKanji { get; set; }
 
         /// <summary>
@@ -208,14 +271,23 @@ public class OAuthAuthorizeUrlStripeUserOptions : INestedOptions
         /// <para>Must also prefill <see cref="Country"/> with the corresponding country.</para>
         /// </summary>
         [JsonProperty("phone_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone_number")]
+#endif
         public string PhoneNumber { get; set; }
 
         /// <summary><c>true</c> if the user sells a physical product, <c>false</c> otherwise.</summary>
         [JsonProperty("physical_product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("physical_product")]
+#endif
         public bool? PhysicalProduct { get; set; }
 
         /// <summary>A description of what the business is accepting payments for.</summary>
         [JsonProperty("product_description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_description")]
+#endif
         public string ProductDescription { get; set; }
 
         /// <summary>
@@ -228,10 +300,16 @@ public class OAuthAuthorizeUrlStripeUserOptions : INestedOptions
         /// </para>
         /// </summary>
         [JsonProperty("state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("state")]
+#endif
         public string State { get; set; }
 
         /// <summary>Street address of the business.</summary>
         [JsonProperty("street_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("street_address")]
+#endif
         public string StreetAddress { get; set; }
 
         /// <summary>
@@ -252,6 +330,9 @@ public class OAuthAuthorizeUrlStripeUserOptions : INestedOptions
         /// </summary>
         /// <remarks>Recommended.</remarks>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
 
         /// <summary>
@@ -262,6 +343,9 @@ public class OAuthAuthorizeUrlStripeUserOptions : INestedOptions
         /// </para>
         /// </summary>
         [JsonProperty("zip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("zip")]
+#endif
         public string Zip { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/OAuth/OAuthDeauthorizeOptions.cs b/src/Stripe.net/Services/OAuth/OAuthDeauthorizeOptions.cs
index bdd39c634c..6961cbb6e7 100644
--- a/src/Stripe.net/Services/OAuth/OAuthDeauthorizeOptions.cs
+++ b/src/Stripe.net/Services/OAuth/OAuthDeauthorizeOptions.cs
@@ -1,6 +1,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OAuthDeauthorizeOptions : BaseOptions
     {
@@ -9,10 +12,16 @@ public class OAuthDeauthorizeOptions : BaseOptions
         /// The account must be connected to this application.
         /// </summary>
         [JsonProperty("client_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("client_id")]
+#endif
         public string ClientId { get; set; }
 
         /// <summary>The account you'd like to disconnect from.</summary>
         [JsonProperty("stripe_user_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("stripe_user_id")]
+#endif
         public string StripeUserId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/OAuth/OAuthTokenCreateOptions.cs b/src/Stripe.net/Services/OAuth/OAuthTokenCreateOptions.cs
index 59634bfe22..4b24d55ebe 100644
--- a/src/Stripe.net/Services/OAuth/OAuthTokenCreateOptions.cs
+++ b/src/Stripe.net/Services/OAuth/OAuthTokenCreateOptions.cs
@@ -2,6 +2,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OAuthTokenCreateOptions : BaseOptions
     {
@@ -16,6 +19,9 @@ public class OAuthTokenCreateOptions : BaseOptions
         /// with a failure.
         /// </summary>
         [JsonProperty("assert_capabilities")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("assert_capabilities")]
+#endif
         public List<string> AssertCapabilities { get; set; }
 
         /// <summary>
@@ -24,10 +30,16 @@ public class OAuthTokenCreateOptions : BaseOptions
         /// depends on whether the <c>client_id</c> used was production or development).
         /// </summary>
         [JsonProperty("client_secret")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("client_secret")]
+#endif
         public string ClientSecret { get; set; }
 
         /// <summary>The value of the <c>code</c>, depending on the <c>grant_type</c>.</summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
@@ -35,10 +47,16 @@ public class OAuthTokenCreateOptions : BaseOptions
         /// <c>refresh_token</c> when using a refresh token to get a new access token.
         /// </summary>
         [JsonProperty("grant_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("grant_type")]
+#endif
         public string GrantType { get; set; }
 
         /// <summary>The value of the <c>refresh_token</c>, depending on the <c>grant_type</c>.</summary>
         [JsonProperty("refresh_token")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refresh_token")]
+#endif
         public string RefreshToken { get; set; }
 
         /// <summary>
@@ -50,6 +68,9 @@ public class OAuthTokenCreateOptions : BaseOptions
         /// <para>Defaults to the scope of the refresh token.</para>
         /// </summary>
         [JsonProperty("scope")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("scope")]
+#endif
         public string Scope { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentApplyCustomerBalanceOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentApplyCustomerBalanceOptions.cs
index 39307b30a2..3e31f73d9d 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentApplyCustomerBalanceOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentApplyCustomerBalanceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentApplyCustomerBalanceOptions : BaseOptions
     {
@@ -19,6 +22,9 @@ public class PaymentIntentApplyCustomerBalanceOptions : BaseOptions
         /// PaymentIntent.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -27,6 +33,9 @@ public class PaymentIntentApplyCustomerBalanceOptions : BaseOptions
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentAutomaticPaymentMethodsOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentAutomaticPaymentMethodsOptions.cs
index 6ae3061283..880c75f483 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentAutomaticPaymentMethodsOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentAutomaticPaymentMethodsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentAutomaticPaymentMethodsOptions : INestedOptions
     {
@@ -16,12 +19,18 @@ public class PaymentIntentAutomaticPaymentMethodsOptions : INestedOptions
         /// One of: <c>always</c>, or <c>never</c>.
         /// </summary>
         [JsonProperty("allow_redirects")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allow_redirects")]
+#endif
         public string AllowRedirects { get; set; }
 
         /// <summary>
         /// Whether this feature is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentCancelOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentCancelOptions.cs
index acd7e8914a..47a35b80a2 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentCancelOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentCancelOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentCancelOptions : BaseOptions
     {
@@ -12,6 +15,9 @@ public class PaymentIntentCancelOptions : BaseOptions
         /// <c>requested_by_customer</c>.
         /// </summary>
         [JsonProperty("cancellation_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancellation_reason")]
+#endif
         public string CancellationReason { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentCaptureOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentCaptureOptions.cs
index c8c4e3edcf..ff2bc026f3 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentCaptureOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentCaptureOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentCaptureOptions : BaseOptions, IHasMetadata
     {
@@ -12,6 +15,9 @@ public class PaymentIntentCaptureOptions : BaseOptions, IHasMetadata
         /// <c>amount_capturable</c> if it's not provided.
         /// </summary>
         [JsonProperty("amount_to_capture")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_to_capture")]
+#endif
         public long? AmountToCapture { get; set; }
 
         /// <summary>
@@ -23,6 +29,9 @@ public class PaymentIntentCaptureOptions : BaseOptions, IHasMetadata
         /// accounts</a>.
         /// </summary>
         [JsonProperty("application_fee_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_amount")]
+#endif
         public long? ApplicationFeeAmount { get; set; }
 
         /// <summary>
@@ -33,6 +42,9 @@ public class PaymentIntentCaptureOptions : BaseOptions, IHasMetadata
         /// PaymentIntents.
         /// </summary>
         [JsonProperty("final_capture")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("final_capture")]
+#endif
         public bool? FinalCapture { get; set; }
 
         /// <summary>
@@ -42,6 +54,9 @@ public class PaymentIntentCaptureOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -56,6 +71,9 @@ public class PaymentIntentCaptureOptions : BaseOptions, IHasMetadata
         /// instead.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
 
         /// <summary>
@@ -65,6 +83,9 @@ public class PaymentIntentCaptureOptions : BaseOptions, IHasMetadata
         /// customer's statement.
         /// </summary>
         [JsonProperty("statement_descriptor_suffix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_suffix")]
+#endif
         public string StatementDescriptorSuffix { get; set; }
 
         /// <summary>
@@ -74,6 +95,9 @@ public class PaymentIntentCaptureOptions : BaseOptions, IHasMetadata
         /// accounts</a>.
         /// </summary>
         [JsonProperty("transfer_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_data")]
+#endif
         public PaymentIntentTransferDataOptions TransferData { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentConfirmOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentConfirmOptions.cs
index df1932d79a..a939a4f10f 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentConfirmOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentConfirmOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentConfirmOptions : BaseOptions
     {
@@ -11,9 +14,15 @@ public class PaymentIntentConfirmOptions : BaseOptions
         /// One of: <c>automatic</c>, <c>automatic_async</c>, or <c>manual</c>.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         [JsonProperty("client_secret")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("client_secret")]
+#endif
         public string ClientSecret { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentIntentConfirmOptions : BaseOptions
         /// precedence.
         /// </summary>
         [JsonProperty("confirmation_token")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("confirmation_token")]
+#endif
         public string ConfirmationToken { get; set; }
 
         /// <summary>
@@ -34,15 +46,24 @@ public class PaymentIntentConfirmOptions : BaseOptions
         /// without authentication</a>.
         /// </summary>
         [JsonProperty("error_on_requires_action")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("error_on_requires_action")]
+#endif
         public bool? ErrorOnRequiresAction { get; set; }
 
         /// <summary>
         /// ID of the mandate that's used for this payment.
         /// </summary>
         [JsonProperty("mandate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate")]
+#endif
         public string Mandate { get; set; }
 
         [JsonProperty("mandate_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_data")]
+#endif
         public PaymentIntentMandateDataOptions MandateData { get; set; }
 
         /// <summary>
@@ -53,6 +74,9 @@ public class PaymentIntentConfirmOptions : BaseOptions
         /// later</a>.
         /// </summary>
         [JsonProperty("off_session")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("off_session")]
+#endif
         public bool? OffSession { get; set; }
 
         /// <summary>
@@ -61,6 +85,9 @@ public class PaymentIntentConfirmOptions : BaseOptions
         /// Source</a> object) to attach to this PaymentIntent.
         /// </summary>
         [JsonProperty("payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method")]
+#endif
         public string PaymentMethod { get; set; }
 
         /// <summary>
@@ -70,12 +97,18 @@ public class PaymentIntentConfirmOptions : BaseOptions
         /// property on the PaymentIntent.
         /// </summary>
         [JsonProperty("payment_method_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_data")]
+#endif
         public PaymentIntentPaymentMethodDataOptions PaymentMethodData { get; set; }
 
         /// <summary>
         /// Payment method-specific configuration for this PaymentIntent.
         /// </summary>
         [JsonProperty("payment_method_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_options")]
+#endif
         public PaymentIntentPaymentMethodOptionsOptions PaymentMethodOptions { get; set; }
 
         /// <summary>
@@ -84,6 +117,9 @@ public class PaymentIntentConfirmOptions : BaseOptions
         /// href="https://dashboard.stripe.com/settings/payment_methods">Stripe Dashboard</a>.
         /// </summary>
         [JsonProperty("payment_method_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_types")]
+#endif
         public List<string> PaymentMethodTypes { get; set; }
 
         /// <summary>
@@ -91,6 +127,9 @@ public class PaymentIntentConfirmOptions : BaseOptions
         /// href="https://stripe.com/docs/radar/radar-session">Radar Sessions</a>.
         /// </summary>
         [JsonProperty("radar_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("radar_options")]
+#endif
         public PaymentIntentRadarOptionsOptions RadarOptions { get; set; }
 
         /// <summary>
@@ -100,6 +139,9 @@ public class PaymentIntentConfirmOptions : BaseOptions
         /// settings</a>.
         /// </summary>
         [JsonProperty("receipt_email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("receipt_email")]
+#endif
         public string ReceiptEmail { get; set; }
 
         /// <summary>
@@ -109,6 +151,9 @@ public class PaymentIntentConfirmOptions : BaseOptions
         /// only used for cards and other redirect-based payment methods.
         /// </summary>
         [JsonProperty("return_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_url")]
+#endif
         public string ReturnUrl { get; set; }
 
         /// <summary>
@@ -137,12 +182,18 @@ public class PaymentIntentConfirmOptions : BaseOptions
         /// One of: <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
         /// Shipping information for this PaymentIntent.
         /// </summary>
         [JsonProperty("shipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping")]
+#endif
         public ChargeShippingOptions Shipping { get; set; }
 
         /// <summary>
@@ -150,6 +201,9 @@ public class PaymentIntentConfirmOptions : BaseOptions
         /// client-side SDKs to handle the next actions.
         /// </summary>
         [JsonProperty("use_stripe_sdk")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("use_stripe_sdk")]
+#endif
         public bool? UseStripeSdk { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentCreateOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentCreateOptions.cs
index 2aeb0dac7d..e72efb3c20 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentCreateOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentCreateOptions : BaseOptions, IHasMetadata
     {
@@ -17,6 +20,9 @@ public class PaymentIntentCreateOptions : BaseOptions, IHasMetadata
         /// 99999999 for a USD charge of $999,999.99).
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -28,6 +34,9 @@ public class PaymentIntentCreateOptions : BaseOptions, IHasMetadata
         /// accounts</a>.
         /// </summary>
         [JsonProperty("application_fee_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_amount")]
+#endif
         public long? ApplicationFeeAmount { get; set; }
 
         /// <summary>
@@ -36,6 +45,9 @@ public class PaymentIntentCreateOptions : BaseOptions, IHasMetadata
         /// parameters.
         /// </summary>
         [JsonProperty("automatic_payment_methods")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatic_payment_methods")]
+#endif
         public PaymentIntentAutomaticPaymentMethodsOptions AutomaticPaymentMethods { get; set; }
 
         /// <summary>
@@ -43,6 +55,9 @@ public class PaymentIntentCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>automatic</c>, <c>automatic_async</c>, or <c>manual</c>.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
@@ -54,6 +69,9 @@ public class PaymentIntentCreateOptions : BaseOptions, IHasMetadata
         /// API</a>.
         /// </summary>
         [JsonProperty("confirm")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("confirm")]
+#endif
         public bool? Confirm { get; set; }
 
         /// <summary>
@@ -62,6 +80,9 @@ public class PaymentIntentCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>automatic</c>, or <c>manual</c>.
         /// </summary>
         [JsonProperty("confirmation_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("confirmation_method")]
+#endif
         public string ConfirmationMethod { get; set; }
 
         /// <summary>
@@ -72,6 +93,9 @@ public class PaymentIntentCreateOptions : BaseOptions, IHasMetadata
         /// precedence.
         /// </summary>
         [JsonProperty("confirmation_token")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("confirmation_token")]
+#endif
         public string ConfirmationToken { get; set; }
 
         /// <summary>
@@ -80,6 +104,9 @@ public class PaymentIntentCreateOptions : BaseOptions, IHasMetadata
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -97,12 +124,18 @@ public class PaymentIntentCreateOptions : BaseOptions, IHasMetadata
         /// payment method representing the card is created and attached to the Customer instead.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -114,6 +147,9 @@ public class PaymentIntentCreateOptions : BaseOptions, IHasMetadata
         /// href="https://stripe.com/docs/api/payment_intents/create#create_payment_intent-confirm"><c>confirm=true</c></a>.
         /// </summary>
         [JsonProperty("error_on_requires_action")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("error_on_requires_action")]
+#endif
         public bool? ErrorOnRequiresAction { get; set; }
 
         /// <summary>
@@ -121,6 +157,9 @@ public class PaymentIntentCreateOptions : BaseOptions, IHasMetadata
         /// href="https://stripe.com/docs/api/payment_intents/create#create_payment_intent-confirm"><c>confirm=true</c></a>.
         /// </summary>
         [JsonProperty("mandate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate")]
+#endif
         public string Mandate { get; set; }
 
         /// <summary>
@@ -129,6 +168,9 @@ public class PaymentIntentCreateOptions : BaseOptions, IHasMetadata
         /// href="https://stripe.com/docs/api/payment_intents/create#create_payment_intent-confirm"><c>confirm=true</c></a>.
         /// </summary>
         [JsonProperty("mandate_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_data")]
+#endif
         public PaymentIntentMandateDataOptions MandateData { get; set; }
 
         /// <summary>
@@ -138,6 +180,9 @@ public class PaymentIntentCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -149,6 +194,9 @@ public class PaymentIntentCreateOptions : BaseOptions, IHasMetadata
         /// href="https://stripe.com/docs/api/payment_intents/create#create_payment_intent-confirm"><c>confirm=true</c></a>.
         /// </summary>
         [JsonProperty("off_session")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("off_session")]
+#endif
         public bool? OffSession { get; set; }
 
         /// <summary>
@@ -157,6 +205,9 @@ public class PaymentIntentCreateOptions : BaseOptions, IHasMetadata
         /// accounts</a>.
         /// </summary>
         [JsonProperty("on_behalf_of")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+#endif
         public string OnBehalfOf { get; set; }
 
         /// <summary>
@@ -170,6 +221,9 @@ public class PaymentIntentCreateOptions : BaseOptions, IHasMetadata
         /// recommend that you explicitly provide the <c>payment_method</c> moving forward.
         /// </summary>
         [JsonProperty("payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method")]
+#endif
         public string PaymentMethod { get; set; }
 
         /// <summary>
@@ -178,6 +232,9 @@ public class PaymentIntentCreateOptions : BaseOptions, IHasMetadata
         /// configuration</a> to use with this PaymentIntent.
         /// </summary>
         [JsonProperty("payment_method_configuration")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_configuration")]
+#endif
         public string PaymentMethodConfiguration { get; set; }
 
         /// <summary>
@@ -187,12 +244,18 @@ public class PaymentIntentCreateOptions : BaseOptions, IHasMetadata
         /// property on the PaymentIntent.
         /// </summary>
         [JsonProperty("payment_method_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_data")]
+#endif
         public PaymentIntentPaymentMethodDataOptions PaymentMethodData { get; set; }
 
         /// <summary>
         /// Payment method-specific configuration for this PaymentIntent.
         /// </summary>
         [JsonProperty("payment_method_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_options")]
+#endif
         public PaymentIntentPaymentMethodOptionsOptions PaymentMethodOptions { get; set; }
 
         /// <summary>
@@ -202,6 +265,9 @@ public class PaymentIntentCreateOptions : BaseOptions, IHasMetadata
         /// settings</a>.
         /// </summary>
         [JsonProperty("payment_method_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_types")]
+#endif
         public List<string> PaymentMethodTypes { get; set; }
 
         /// <summary>
@@ -209,6 +275,9 @@ public class PaymentIntentCreateOptions : BaseOptions, IHasMetadata
         /// href="https://stripe.com/docs/radar/radar-session">Radar Sessions</a>.
         /// </summary>
         [JsonProperty("radar_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("radar_options")]
+#endif
         public PaymentIntentRadarOptionsOptions RadarOptions { get; set; }
 
         /// <summary>
@@ -217,6 +286,9 @@ public class PaymentIntentCreateOptions : BaseOptions, IHasMetadata
         /// href="https://dashboard.stripe.com/account/emails">email settings</a>.
         /// </summary>
         [JsonProperty("receipt_email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("receipt_email")]
+#endif
         public string ReceiptEmail { get; set; }
 
         /// <summary>
@@ -227,6 +299,9 @@ public class PaymentIntentCreateOptions : BaseOptions, IHasMetadata
         /// href="https://stripe.com/docs/api/payment_intents/create#create_payment_intent-confirm"><c>confirm=true</c></a>.
         /// </summary>
         [JsonProperty("return_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_url")]
+#endif
         public string ReturnUrl { get; set; }
 
         /// <summary>
@@ -251,12 +326,18 @@ public class PaymentIntentCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
         /// Shipping information for this PaymentIntent.
         /// </summary>
         [JsonProperty("shipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping")]
+#endif
         public ChargeShippingOptions Shipping { get; set; }
 
         /// <summary>
@@ -271,6 +352,9 @@ public class PaymentIntentCreateOptions : BaseOptions, IHasMetadata
         /// instead.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
 
         /// <summary>
@@ -280,6 +364,9 @@ public class PaymentIntentCreateOptions : BaseOptions, IHasMetadata
         /// customer's statement.
         /// </summary>
         [JsonProperty("statement_descriptor_suffix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_suffix")]
+#endif
         public string StatementDescriptorSuffix { get; set; }
 
         /// <summary>
@@ -288,6 +375,9 @@ public class PaymentIntentCreateOptions : BaseOptions, IHasMetadata
         /// accounts</a>.
         /// </summary>
         [JsonProperty("transfer_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_data")]
+#endif
         public PaymentIntentTransferDataOptions TransferData { get; set; }
 
         /// <summary>
@@ -296,6 +386,9 @@ public class PaymentIntentCreateOptions : BaseOptions, IHasMetadata
         /// connected accounts</a>.
         /// </summary>
         [JsonProperty("transfer_group")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_group")]
+#endif
         public string TransferGroup { get; set; }
 
         /// <summary>
@@ -303,6 +396,9 @@ public class PaymentIntentCreateOptions : BaseOptions, IHasMetadata
         /// client-side SDKs to handle the next actions.
         /// </summary>
         [JsonProperty("use_stripe_sdk")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("use_stripe_sdk")]
+#endif
         public bool? UseStripeSdk { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentGetOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentGetOptions.cs
index 19ea47a450..6bbc060064 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentGetOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentGetOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentGetOptions : BaseOptions
     {
@@ -10,6 +13,9 @@ public class PaymentIntentGetOptions : BaseOptions
         /// retrieve the source.
         /// </summary>
         [JsonProperty("client_secret")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("client_secret")]
+#endif
         public string ClientSecret { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentIncrementAuthorizationOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentIncrementAuthorizationOptions.cs
index 34ef1975f6..1b2f275956 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentIncrementAuthorizationOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentIncrementAuthorizationOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentIncrementAuthorizationOptions : BaseOptions, IHasMetadata
     {
@@ -11,6 +14,9 @@ public class PaymentIntentIncrementAuthorizationOptions : BaseOptions, IHasMetad
         /// must be greater than the currently authorized amount.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -22,12 +28,18 @@ public class PaymentIntentIncrementAuthorizationOptions : BaseOptions, IHasMetad
         /// accounts</a>.
         /// </summary>
         [JsonProperty("application_fee_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_amount")]
+#endif
         public long? ApplicationFeeAmount { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -37,6 +49,9 @@ public class PaymentIntentIncrementAuthorizationOptions : BaseOptions, IHasMetad
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -47,6 +62,9 @@ public class PaymentIntentIncrementAuthorizationOptions : BaseOptions, IHasMetad
         /// Descriptor docs</a>.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
 
         /// <summary>
@@ -55,6 +73,9 @@ public class PaymentIntentIncrementAuthorizationOptions : BaseOptions, IHasMetad
         /// case for connected accounts</a>.
         /// </summary>
         [JsonProperty("transfer_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_data")]
+#endif
         public PaymentIntentTransferDataOptions TransferData { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentListOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentListOptions.cs
index 8cbb035c28..ca631a3f34 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentListOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentListOptions : ListOptionsWithCreated
     {
@@ -9,6 +12,9 @@ public class PaymentIntentListOptions : ListOptionsWithCreated
         /// Only return PaymentIntents for the customer that this customer ID specifies.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentMandateDataCustomerAcceptanceOnlineOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentMandateDataCustomerAcceptanceOnlineOptions.cs
index ce43635766..79a341f606 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentMandateDataCustomerAcceptanceOnlineOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentMandateDataCustomerAcceptanceOnlineOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentMandateDataCustomerAcceptanceOnlineOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class PaymentIntentMandateDataCustomerAcceptanceOnlineOptions : INestedOp
         /// The IP address from which the Mandate was accepted by the customer.
         /// </summary>
         [JsonProperty("ip_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip_address")]
+#endif
         public string IpAddress { get; set; }
 
         /// <summary>
         /// The user agent of the browser from which the Mandate was accepted by the customer.
         /// </summary>
         [JsonProperty("user_agent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_agent")]
+#endif
         public string UserAgent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentMandateDataCustomerAcceptanceOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentMandateDataCustomerAcceptanceOptions.cs
index de77e80726..5e7f40f9c3 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentMandateDataCustomerAcceptanceOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentMandateDataCustomerAcceptanceOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentMandateDataCustomerAcceptanceOptions : INestedOptions
     {
@@ -12,6 +15,10 @@ public class PaymentIntentMandateDataCustomerAcceptanceOptions : INestedOptions
         /// </summary>
         [JsonProperty("accepted_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("accepted_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? AcceptedAt { get; set; }
 
         /// <summary>
@@ -19,6 +26,9 @@ public class PaymentIntentMandateDataCustomerAcceptanceOptions : INestedOptions
         /// acceptance.
         /// </summary>
         [JsonProperty("offline")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("offline")]
+#endif
         public PaymentIntentMandateDataCustomerAcceptanceOfflineOptions Offline { get; set; }
 
         /// <summary>
@@ -26,6 +36,9 @@ public class PaymentIntentMandateDataCustomerAcceptanceOptions : INestedOptions
         /// acceptance.
         /// </summary>
         [JsonProperty("online")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("online")]
+#endif
         public PaymentIntentMandateDataCustomerAcceptanceOnlineOptions Online { get; set; }
 
         /// <summary>
@@ -34,6 +47,9 @@ public class PaymentIntentMandateDataCustomerAcceptanceOptions : INestedOptions
         /// One of: <c>offline</c>, or <c>online</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentMandateDataOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentMandateDataOptions.cs
index 115d23a9ac..5d96409641 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentMandateDataOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentMandateDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentMandateDataOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentIntentMandateDataOptions : INestedOptions
         /// This hash contains details about the customer acceptance of the Mandate.
         /// </summary>
         [JsonProperty("customer_acceptance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_acceptance")]
+#endif
         public PaymentIntentMandateDataCustomerAcceptanceOptions CustomerAcceptance { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataAcssDebitOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataAcssDebitOptions.cs
index b135ba2e11..390d785855 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataAcssDebitOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataAcssDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodDataAcssDebitOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class PaymentIntentPaymentMethodDataAcssDebitOptions : INestedOptions
         /// Customer's bank account number.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
         /// Institution number of the customer's bank.
         /// </summary>
         [JsonProperty("institution_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("institution_number")]
+#endif
         public string InstitutionNumber { get; set; }
 
         /// <summary>
         /// Transit number of the customer's bank.
         /// </summary>
         [JsonProperty("transit_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transit_number")]
+#endif
         public string TransitNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataAuBecsDebitOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataAuBecsDebitOptions.cs
index 96b0a549c1..4c2b516008 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataAuBecsDebitOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataAuBecsDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodDataAuBecsDebitOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class PaymentIntentPaymentMethodDataAuBecsDebitOptions : INestedOptions
         /// The account number for the bank account.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
         /// Bank-State-Branch number of the bank account.
         /// </summary>
         [JsonProperty("bsb_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bsb_number")]
+#endif
         public string BsbNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataBacsDebitOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataBacsDebitOptions.cs
index a3e9ed9695..696ae1aee5 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataBacsDebitOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataBacsDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodDataBacsDebitOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class PaymentIntentPaymentMethodDataBacsDebitOptions : INestedOptions
         /// Account number of the bank account that the funds will be debited from.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
         /// Sort code of the bank account. (e.g., <c>10-20-30</c>).
         /// </summary>
         [JsonProperty("sort_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sort_code")]
+#endif
         public string SortCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataBillingDetailsOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataBillingDetailsOptions.cs
index 2be9921664..e86728ac85 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataBillingDetailsOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataBillingDetailsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodDataBillingDetailsOptions : INestedOptions
     {
@@ -9,24 +12,36 @@ public class PaymentIntentPaymentMethodDataBillingDetailsOptions : INestedOption
         /// Billing address.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public AddressOptions Address { get; set; }
 
         /// <summary>
         /// Email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// Full name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// Billing phone number (including extension).
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataBoletoOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataBoletoOptions.cs
index 3181640e34..08aa3cc6b3 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataBoletoOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataBoletoOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodDataBoletoOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentIntentPaymentMethodDataBoletoOptions : INestedOptions
         /// consumers).
         /// </summary>
         [JsonProperty("tax_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_id")]
+#endif
         public string TaxId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataEpsOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataEpsOptions.cs
index b065250510..db9154c667 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataEpsOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataEpsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodDataEpsOptions : INestedOptions
     {
@@ -23,6 +26,9 @@ public class PaymentIntentPaymentMethodDataEpsOptions : INestedOptions
         /// <c>vr_bank_braunau</c>.
         /// </summary>
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataFpxOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataFpxOptions.cs
index 52bed15619..3fddcf324b 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataFpxOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataFpxOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodDataFpxOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentIntentPaymentMethodDataFpxOptions : INestedOptions
         /// One of: <c>company</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("account_holder_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_type")]
+#endif
         public string AccountHolderType { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class PaymentIntentPaymentMethodDataFpxOptions : INestedOptions
         /// <c>public_bank</c>, <c>rhb</c>, <c>standard_chartered</c>, or <c>uob</c>.
         /// </summary>
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataIdealOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataIdealOptions.cs
index 2def64005c..f7f37eb1b1 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataIdealOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataIdealOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodDataIdealOptions : INestedOptions
     {
@@ -14,6 +17,9 @@ public class PaymentIntentPaymentMethodDataIdealOptions : INestedOptions
         /// <c>yoursafe</c>.
         /// </summary>
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataKlarnaOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataKlarnaOptions.cs
index fb17606fcb..8513618275 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataKlarnaOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataKlarnaOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodDataKlarnaOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentIntentPaymentMethodDataKlarnaOptions : INestedOptions
         /// Customer's date of birth.
         /// </summary>
         [JsonProperty("dob")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dob")]
+#endif
         public DobOptions Dob { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataNaverPayOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataNaverPayOptions.cs
index a2b259b7dd..021a8b48a6 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataNaverPayOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataNaverPayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodDataNaverPayOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class PaymentIntentPaymentMethodDataNaverPayOptions : INestedOptions
         /// One of: <c>card</c>, or <c>points</c>.
         /// </summary>
         [JsonProperty("funding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding")]
+#endif
         public string Funding { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataOptions.cs
index 714091e401..c42f05682b 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
     {
@@ -11,6 +14,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// Debit payment method.
         /// </summary>
         [JsonProperty("acss_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acss_debit")]
+#endif
         public PaymentIntentPaymentMethodDataAcssDebitOptions AcssDebit { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// payment method.
         /// </summary>
         [JsonProperty("affirm")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("affirm")]
+#endif
         public PaymentIntentPaymentMethodDataAffirmOptions Affirm { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// the AfterpayClearpay payment method.
         /// </summary>
         [JsonProperty("afterpay_clearpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("afterpay_clearpay")]
+#endif
         public PaymentIntentPaymentMethodDataAfterpayClearpayOptions AfterpayClearpay { get; set; }
 
         /// <summary>
@@ -32,6 +44,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// payment method.
         /// </summary>
         [JsonProperty("alipay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alipay")]
+#endif
         public PaymentIntentPaymentMethodDataAlipayOptions Alipay { get; set; }
 
         /// <summary>
@@ -42,6 +57,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// One of: <c>always</c>, <c>limited</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("allow_redisplay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allow_redisplay")]
+#endif
         public string AllowRedisplay { get; set; }
 
         /// <summary>
@@ -49,6 +67,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// method.
         /// </summary>
         [JsonProperty("alma")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alma")]
+#endif
         public PaymentIntentPaymentMethodDataAlmaOptions Alma { get; set; }
 
         /// <summary>
@@ -56,6 +77,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// payment method.
         /// </summary>
         [JsonProperty("amazon_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amazon_pay")]
+#endif
         public PaymentIntentPaymentMethodDataAmazonPayOptions AmazonPay { get; set; }
 
         /// <summary>
@@ -63,6 +87,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// bank account.
         /// </summary>
         [JsonProperty("au_becs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("au_becs_debit")]
+#endif
         public PaymentIntentPaymentMethodDataAuBecsDebitOptions AuBecsDebit { get; set; }
 
         /// <summary>
@@ -70,6 +97,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// Direct Debit bank account.
         /// </summary>
         [JsonProperty("bacs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bacs_debit")]
+#endif
         public PaymentIntentPaymentMethodDataBacsDebitOptions BacsDebit { get; set; }
 
         /// <summary>
@@ -77,6 +107,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// Bancontact payment method.
         /// </summary>
         [JsonProperty("bancontact")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bancontact")]
+#endif
         public PaymentIntentPaymentMethodDataBancontactOptions Bancontact { get; set; }
 
         /// <summary>
@@ -84,6 +117,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// particular types of payment methods.
         /// </summary>
         [JsonProperty("billing_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_details")]
+#endif
         public PaymentIntentPaymentMethodDataBillingDetailsOptions BillingDetails { get; set; }
 
         /// <summary>
@@ -91,6 +127,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// payment method.
         /// </summary>
         [JsonProperty("blik")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("blik")]
+#endif
         public PaymentIntentPaymentMethodDataBlikOptions Blik { get; set; }
 
         /// <summary>
@@ -98,6 +137,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// payment method.
         /// </summary>
         [JsonProperty("boleto")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("boleto")]
+#endif
         public PaymentIntentPaymentMethodDataBoletoOptions Boleto { get; set; }
 
         /// <summary>
@@ -105,6 +147,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// Pay payment method.
         /// </summary>
         [JsonProperty("cashapp")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cashapp")]
+#endif
         public PaymentIntentPaymentMethodDataCashappOptions Cashapp { get; set; }
 
         /// <summary>
@@ -112,6 +157,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// CustomerBalance payment method.
         /// </summary>
         [JsonProperty("customer_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_balance")]
+#endif
         public PaymentIntentPaymentMethodDataCustomerBalanceOptions CustomerBalance { get; set; }
 
         /// <summary>
@@ -119,6 +167,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// method.
         /// </summary>
         [JsonProperty("eps")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eps")]
+#endif
         public PaymentIntentPaymentMethodDataEpsOptions Eps { get; set; }
 
         /// <summary>
@@ -126,6 +177,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// method.
         /// </summary>
         [JsonProperty("fpx")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fpx")]
+#endif
         public PaymentIntentPaymentMethodDataFpxOptions Fpx { get; set; }
 
         /// <summary>
@@ -133,6 +187,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// payment method.
         /// </summary>
         [JsonProperty("giropay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("giropay")]
+#endif
         public PaymentIntentPaymentMethodDataGiropayOptions Giropay { get; set; }
 
         /// <summary>
@@ -140,6 +197,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// payment method.
         /// </summary>
         [JsonProperty("grabpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("grabpay")]
+#endif
         public PaymentIntentPaymentMethodDataGrabpayOptions Grabpay { get; set; }
 
         /// <summary>
@@ -147,6 +207,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// payment method.
         /// </summary>
         [JsonProperty("ideal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ideal")]
+#endif
         public PaymentIntentPaymentMethodDataIdealOptions Ideal { get; set; }
 
         /// <summary>
@@ -154,6 +217,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// Interac Present payment method.
         /// </summary>
         [JsonProperty("interac_present")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interac_present")]
+#endif
         public PaymentIntentPaymentMethodDataInteracPresentOptions InteracPresent { get; set; }
 
         /// <summary>
@@ -161,6 +227,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// Pay payment method.
         /// </summary>
         [JsonProperty("kakao_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kakao_pay")]
+#endif
         public PaymentIntentPaymentMethodDataKakaoPayOptions KakaoPay { get; set; }
 
         /// <summary>
@@ -168,6 +237,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// payment method.
         /// </summary>
         [JsonProperty("klarna")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("klarna")]
+#endif
         public PaymentIntentPaymentMethodDataKlarnaOptions Klarna { get; set; }
 
         /// <summary>
@@ -175,6 +247,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// payment method.
         /// </summary>
         [JsonProperty("konbini")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("konbini")]
+#endif
         public PaymentIntentPaymentMethodDataKonbiniOptions Konbini { get; set; }
 
         /// <summary>
@@ -182,6 +257,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// Card payment method.
         /// </summary>
         [JsonProperty("kr_card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kr_card")]
+#endif
         public PaymentIntentPaymentMethodDataKrCardOptions KrCard { get; set; }
 
         /// <summary>
@@ -189,6 +267,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// payment method.
         /// </summary>
         [JsonProperty("link")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("link")]
+#endif
         public PaymentIntentPaymentMethodDataLinkOptions Link { get; set; }
 
         /// <summary>
@@ -198,6 +279,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -205,6 +289,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// MobilePay payment method.
         /// </summary>
         [JsonProperty("mobilepay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mobilepay")]
+#endif
         public PaymentIntentPaymentMethodDataMobilepayOptions Mobilepay { get; set; }
 
         /// <summary>
@@ -212,6 +299,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// Multibanco payment method.
         /// </summary>
         [JsonProperty("multibanco")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("multibanco")]
+#endif
         public PaymentIntentPaymentMethodDataMultibancoOptions Multibanco { get; set; }
 
         /// <summary>
@@ -219,6 +309,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// Pay payment method.
         /// </summary>
         [JsonProperty("naver_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("naver_pay")]
+#endif
         public PaymentIntentPaymentMethodDataNaverPayOptions NaverPay { get; set; }
 
         /// <summary>
@@ -226,6 +319,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// payment method.
         /// </summary>
         [JsonProperty("oxxo")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("oxxo")]
+#endif
         public PaymentIntentPaymentMethodDataOxxoOptions Oxxo { get; set; }
 
         /// <summary>
@@ -233,6 +329,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// method.
         /// </summary>
         [JsonProperty("p24")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("p24")]
+#endif
         public PaymentIntentPaymentMethodDataP24Options P24 { get; set; }
 
         /// <summary>
@@ -240,6 +339,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// PayByBank payment method.
         /// </summary>
         [JsonProperty("pay_by_bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_by_bank")]
+#endif
         public PaymentIntentPaymentMethodDataPayByBankOptions PayByBank { get; set; }
 
         /// <summary>
@@ -247,6 +349,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// payment method.
         /// </summary>
         [JsonProperty("payco")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payco")]
+#endif
         public PaymentIntentPaymentMethodDataPaycoOptions Payco { get; set; }
 
         /// <summary>
@@ -254,6 +359,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// payment method.
         /// </summary>
         [JsonProperty("paynow")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paynow")]
+#endif
         public PaymentIntentPaymentMethodDataPaynowOptions Paynow { get; set; }
 
         /// <summary>
@@ -261,6 +369,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// payment method.
         /// </summary>
         [JsonProperty("paypal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paypal")]
+#endif
         public PaymentIntentPaymentMethodDataPaypalOptions Paypal { get; set; }
 
         /// <summary>
@@ -268,6 +379,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// method.
         /// </summary>
         [JsonProperty("pix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pix")]
+#endif
         public PaymentIntentPaymentMethodDataPixOptions Pix { get; set; }
 
         /// <summary>
@@ -275,6 +389,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// PromptPay payment method.
         /// </summary>
         [JsonProperty("promptpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promptpay")]
+#endif
         public PaymentIntentPaymentMethodDataPromptpayOptions Promptpay { get; set; }
 
         /// <summary>
@@ -283,6 +400,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// information.
         /// </summary>
         [JsonProperty("radar_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("radar_options")]
+#endif
         public PaymentIntentPaymentMethodDataRadarOptionsOptions RadarOptions { get; set; }
 
         /// <summary>
@@ -290,6 +410,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// Revolut Pay payment method.
         /// </summary>
         [JsonProperty("revolut_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("revolut_pay")]
+#endif
         public PaymentIntentPaymentMethodDataRevolutPayOptions RevolutPay { get; set; }
 
         /// <summary>
@@ -297,6 +420,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// SamsungPay payment method.
         /// </summary>
         [JsonProperty("samsung_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("samsung_pay")]
+#endif
         public PaymentIntentPaymentMethodDataSamsungPayOptions SamsungPay { get; set; }
 
         /// <summary>
@@ -304,6 +430,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// debit bank account.
         /// </summary>
         [JsonProperty("sepa_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_debit")]
+#endif
         public PaymentIntentPaymentMethodDataSepaDebitOptions SepaDebit { get; set; }
 
         /// <summary>
@@ -311,6 +440,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// payment method.
         /// </summary>
         [JsonProperty("sofort")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sofort")]
+#endif
         public PaymentIntentPaymentMethodDataSofortOptions Sofort { get; set; }
 
         /// <summary>
@@ -318,6 +450,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// payment method.
         /// </summary>
         [JsonProperty("swish")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("swish")]
+#endif
         public PaymentIntentPaymentMethodDataSwishOptions Swish { get; set; }
 
         /// <summary>
@@ -325,6 +460,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// method.
         /// </summary>
         [JsonProperty("twint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("twint")]
+#endif
         public PaymentIntentPaymentMethodDataTwintOptions Twint { get; set; }
 
         /// <summary>
@@ -342,6 +480,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// <c>twint</c>, <c>us_bank_account</c>, <c>wechat_pay</c>, or <c>zip</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
@@ -349,6 +490,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// US bank account payment method.
         /// </summary>
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public PaymentIntentPaymentMethodDataUsBankAccountOptions UsBankAccount { get; set; }
 
         /// <summary>
@@ -356,6 +500,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// wechat_pay payment method.
         /// </summary>
         [JsonProperty("wechat_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wechat_pay")]
+#endif
         public PaymentIntentPaymentMethodDataWechatPayOptions WechatPay { get; set; }
 
         /// <summary>
@@ -363,6 +510,9 @@ public class PaymentIntentPaymentMethodDataOptions : INestedOptions, IHasMetadat
         /// method.
         /// </summary>
         [JsonProperty("zip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("zip")]
+#endif
         public PaymentIntentPaymentMethodDataZipOptions Zip { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataP24Options.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataP24Options.cs
index 416a824cf9..aafb1a10b4 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataP24Options.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataP24Options.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodDataP24Options : INestedOptions
     {
@@ -17,6 +20,9 @@ public class PaymentIntentPaymentMethodDataP24Options : INestedOptions
         /// <c>volkswagen_bank</c>.
         /// </summary>
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataRadarOptionsOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataRadarOptionsOptions.cs
index 7005c969fc..f1380156af 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataRadarOptionsOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataRadarOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodDataRadarOptionsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class PaymentIntentPaymentMethodDataRadarOptionsOptions : INestedOptions
         /// predictions on your payments.
         /// </summary>
         [JsonProperty("session")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("session")]
+#endif
         public string Session { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataSepaDebitOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataSepaDebitOptions.cs
index bc155061bd..9ba09b4fe6 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataSepaDebitOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataSepaDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodDataSepaDebitOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentIntentPaymentMethodDataSepaDebitOptions : INestedOptions
         /// IBAN of the bank account.
         /// </summary>
         [JsonProperty("iban")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iban")]
+#endif
         public string Iban { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataSofortOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataSofortOptions.cs
index 6f1af9d8bb..5da20c46c2 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataSofortOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataSofortOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodDataSofortOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentIntentPaymentMethodDataSofortOptions : INestedOptions
         /// One of: <c>AT</c>, <c>BE</c>, <c>DE</c>, <c>ES</c>, <c>IT</c>, or <c>NL</c>.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataUsBankAccountOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataUsBankAccountOptions.cs
index ae10c53bdb..b0fbfee092 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataUsBankAccountOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodDataUsBankAccountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodDataUsBankAccountOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class PaymentIntentPaymentMethodDataUsBankAccountOptions : INestedOptions
         /// One of: <c>company</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("account_holder_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_type")]
+#endif
         public string AccountHolderType { get; set; }
 
         /// <summary>
         /// Account number of the bank account.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
@@ -23,18 +32,27 @@ public class PaymentIntentPaymentMethodDataUsBankAccountOptions : INestedOptions
         /// One of: <c>checking</c>, or <c>savings</c>.
         /// </summary>
         [JsonProperty("account_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_type")]
+#endif
         public string AccountType { get; set; }
 
         /// <summary>
         /// The ID of a Financial Connections Account to use as a payment method.
         /// </summary>
         [JsonProperty("financial_connections_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_connections_account")]
+#endif
         public string FinancialConnectionsAccount { get; set; }
 
         /// <summary>
         /// Routing number of the bank account.
         /// </summary>
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAcssDebitMandateOptionsOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAcssDebitMandateOptionsOptions.cs
index 99afdb7724..a8f6c943f8 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAcssDebitMandateOptionsOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAcssDebitMandateOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsAcssDebitMandateOptionsOptions : INestedOptions
     {
@@ -13,6 +16,9 @@ public class PaymentIntentPaymentMethodOptionsAcssDebitMandateOptionsOptions : I
         /// Intent.
         /// </summary>
         [JsonProperty("custom_mandate_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_mandate_url")]
+#endif
         public string CustomMandateUrl { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class PaymentIntentPaymentMethodOptionsAcssDebitMandateOptionsOptions : I
         /// 'interval' or 'combined'.
         /// </summary>
         [JsonProperty("interval_description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_description")]
+#endif
         public string IntervalDescription { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class PaymentIntentPaymentMethodOptionsAcssDebitMandateOptionsOptions : I
         /// One of: <c>combined</c>, <c>interval</c>, or <c>sporadic</c>.
         /// </summary>
         [JsonProperty("payment_schedule")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_schedule")]
+#endif
         public string PaymentSchedule { get; set; }
 
         /// <summary>
@@ -34,6 +46,9 @@ public class PaymentIntentPaymentMethodOptionsAcssDebitMandateOptionsOptions : I
         /// One of: <c>business</c>, or <c>personal</c>.
         /// </summary>
         [JsonProperty("transaction_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_type")]
+#endif
         public string TransactionType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAcssDebitOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAcssDebitOptions.cs
index 2463e6484f..90b2162fc0 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAcssDebitOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAcssDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsAcssDebitOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentIntentPaymentMethodOptionsAcssDebitOptions : INestedOptions
         /// Additional fields for Mandate creation.
         /// </summary>
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public PaymentIntentPaymentMethodOptionsAcssDebitMandateOptionsOptions MandateOptions { get; set; }
 
         /// <summary>
@@ -37,6 +43,9 @@ public class PaymentIntentPaymentMethodOptionsAcssDebitOptions : INestedOptions
         /// One of: <c>none</c>, <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
@@ -45,6 +54,9 @@ public class PaymentIntentPaymentMethodOptionsAcssDebitOptions : INestedOptions
         /// and 15 calendar days from now.
         /// </summary>
         [JsonProperty("target_date")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("target_date")]
+#endif
         public string TargetDate { get; set; }
 
         /// <summary>
@@ -52,6 +64,9 @@ public class PaymentIntentPaymentMethodOptionsAcssDebitOptions : INestedOptions
         /// One of: <c>automatic</c>, <c>instant</c>, or <c>microdeposits</c>.
         /// </summary>
         [JsonProperty("verification_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification_method")]
+#endif
         public string VerificationMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAffirmOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAffirmOptions.cs
index 1aa04e7c02..4c0278ff2e 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAffirmOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAffirmOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsAffirmOptions : INestedOptions
     {
@@ -16,12 +19,18 @@ public class PaymentIntentPaymentMethodOptionsAffirmOptions : INestedOptions
         /// for this parameter unsets the stored value for this payment method type.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
         /// Preferred language of the Affirm authorization page that the customer is redirected to.
         /// </summary>
         [JsonProperty("preferred_locale")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_locale")]
+#endif
         public string PreferredLocale { get; set; }
 
         /// <summary>
@@ -49,6 +58,9 @@ public class PaymentIntentPaymentMethodOptionsAffirmOptions : INestedOptions
         /// <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAfterpayClearpayOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAfterpayClearpayOptions.cs
index 612c700d70..a96192da43 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAfterpayClearpayOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAfterpayClearpayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsAfterpayClearpayOptions : INestedOptions
     {
@@ -16,6 +19,9 @@ public class PaymentIntentPaymentMethodOptionsAfterpayClearpayOptions : INestedO
         /// for this parameter unsets the stored value for this payment method type.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
@@ -24,6 +30,9 @@ public class PaymentIntentPaymentMethodOptionsAfterpayClearpayOptions : INestedO
         /// backslashes, and dashes. This field differs from the statement descriptor and item name.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
@@ -51,6 +60,9 @@ public class PaymentIntentPaymentMethodOptionsAfterpayClearpayOptions : INestedO
         /// <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAlipayOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAlipayOptions.cs
index 5e0ff73994..d6baefadba 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAlipayOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAlipayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsAlipayOptions : INestedOptions
     {
@@ -31,6 +34,9 @@ public class PaymentIntentPaymentMethodOptionsAlipayOptions : INestedOptions
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAlmaOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAlmaOptions.cs
index 5bb6475105..a11f315a5c 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAlmaOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAlmaOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsAlmaOptions : INestedOptions
     {
@@ -16,6 +19,9 @@ public class PaymentIntentPaymentMethodOptionsAlmaOptions : INestedOptions
         /// for this parameter unsets the stored value for this payment method type.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAmazonPayOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAmazonPayOptions.cs
index 747419a5f5..091bfec000 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAmazonPayOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAmazonPayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsAmazonPayOptions : INestedOptions
     {
@@ -16,6 +19,9 @@ public class PaymentIntentPaymentMethodOptionsAmazonPayOptions : INestedOptions
         /// for this parameter unsets the stored value for this payment method type.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
@@ -40,6 +46,9 @@ public class PaymentIntentPaymentMethodOptionsAmazonPayOptions : INestedOptions
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAuBecsDebitOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAuBecsDebitOptions.cs
index 3b68c57a4a..3d4d4e4322 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAuBecsDebitOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsAuBecsDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsAuBecsDebitOptions : INestedOptions
     {
@@ -31,6 +34,9 @@ public class PaymentIntentPaymentMethodOptionsAuBecsDebitOptions : INestedOption
         /// One of: <c>none</c>, <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
@@ -39,6 +45,9 @@ public class PaymentIntentPaymentMethodOptionsAuBecsDebitOptions : INestedOption
         /// and 15 calendar days from now.
         /// </summary>
         [JsonProperty("target_date")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("target_date")]
+#endif
         public string TargetDate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsBacsDebitMandateOptionsOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsBacsDebitMandateOptionsOptions.cs
index f2d4c41200..2f84f5bb2e 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsBacsDebitMandateOptionsOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsBacsDebitMandateOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsBacsDebitMandateOptionsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class PaymentIntentPaymentMethodOptionsBacsDebitMandateOptionsOptions : I
         /// '/', '_', '-', '&amp;', '.'. Cannot begin with 'DDIC' or 'STRIPE'.
         /// </summary>
         [JsonProperty("reference_prefix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference_prefix")]
+#endif
         public string ReferencePrefix { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsBacsDebitOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsBacsDebitOptions.cs
index da0e885028..be22fc6e18 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsBacsDebitOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsBacsDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsBacsDebitOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentIntentPaymentMethodOptionsBacsDebitOptions : INestedOptions
         /// Additional fields for Mandate creation.
         /// </summary>
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public PaymentIntentPaymentMethodOptionsBacsDebitMandateOptionsOptions MandateOptions { get; set; }
 
         /// <summary>
@@ -37,6 +43,9 @@ public class PaymentIntentPaymentMethodOptionsBacsDebitOptions : INestedOptions
         /// One of: <c>none</c>, <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
@@ -45,6 +54,9 @@ public class PaymentIntentPaymentMethodOptionsBacsDebitOptions : INestedOptions
         /// and 15 calendar days from now.
         /// </summary>
         [JsonProperty("target_date")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("target_date")]
+#endif
         public string TargetDate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsBancontactOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsBancontactOptions.cs
index f3f636022c..e862b79449 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsBancontactOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsBancontactOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsBancontactOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class PaymentIntentPaymentMethodOptionsBancontactOptions : INestedOptions
         /// One of: <c>de</c>, <c>en</c>, <c>fr</c>, or <c>nl</c>.
         /// </summary>
         [JsonProperty("preferred_language")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_language")]
+#endif
         public string PreferredLanguage { get; set; }
 
         /// <summary>
@@ -39,6 +45,9 @@ public class PaymentIntentPaymentMethodOptionsBancontactOptions : INestedOptions
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsBlikOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsBlikOptions.cs
index e41f1be9ee..65b8011c87 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsBlikOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsBlikOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsBlikOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentIntentPaymentMethodOptionsBlikOptions : INestedOptions
         /// only be set on confirmation.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
@@ -37,6 +43,9 @@ public class PaymentIntentPaymentMethodOptionsBlikOptions : INestedOptions
         /// <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsBoletoOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsBoletoOptions.cs
index 4bbd85d773..c8217d38bd 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsBoletoOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsBoletoOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsBoletoOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class PaymentIntentPaymentMethodOptionsBoletoOptions : INestedOptions
         /// expire on Wednesday at 23:59 America/Sao_Paulo time.
         /// </summary>
         [JsonProperty("expires_after_days")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_after_days")]
+#endif
         public long? ExpiresAfterDays { get; set; }
 
         /// <summary>
@@ -39,6 +45,9 @@ public class PaymentIntentPaymentMethodOptionsBoletoOptions : INestedOptions
         /// One of: <c>none</c>, <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardInstallmentsOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardInstallmentsOptions.cs
index 0cf5f50c06..0797900f1a 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardInstallmentsOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardInstallmentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsCardInstallmentsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class PaymentIntentPaymentMethodOptionsCardInstallmentsOptions : INestedO
         /// any selected plan from applying to a charge.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class PaymentIntentPaymentMethodOptionsCardInstallmentsOptions : INestedO
         /// be provided during confirmation.
         /// </summary>
         [JsonProperty("plan")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("plan")]
+#endif
         public PaymentIntentPaymentMethodOptionsCardInstallmentsPlanOptions Plan { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardInstallmentsPlanOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardInstallmentsPlanOptions.cs
index f977a8b9c9..1340960788 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardInstallmentsPlanOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardInstallmentsPlanOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsCardInstallmentsPlanOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentIntentPaymentMethodOptionsCardInstallmentsPlanOptions : INes
         /// installment payments your customer will make to their credit card.
         /// </summary>
         [JsonProperty("count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("count")]
+#endif
         public long? Count { get; set; }
 
         /// <summary>
@@ -18,12 +24,18 @@ public class PaymentIntentPaymentMethodOptionsCardInstallmentsPlanOptions : INes
         /// <c>month</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
 
         /// <summary>
         /// Type of installment plan, one of <c>fixed_count</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardMandateOptionsOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardMandateOptionsOptions.cs
index 20622f0559..db51992e9b 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardMandateOptionsOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardMandateOptionsOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsCardMandateOptionsOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class PaymentIntentPaymentMethodOptionsCardMandateOptionsOptions : INeste
         /// Amount to be charged for future payments.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class PaymentIntentPaymentMethodOptionsCardMandateOptionsOptions : INeste
         /// One of: <c>fixed</c>, or <c>maximum</c>.
         /// </summary>
         [JsonProperty("amount_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_type")]
+#endif
         public string AmountType { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class PaymentIntentPaymentMethodOptionsCardMandateOptionsOptions : INeste
         /// customer.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -36,6 +48,10 @@ public class PaymentIntentPaymentMethodOptionsCardMandateOptionsOptions : INeste
         /// </summary>
         [JsonProperty("end_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? EndDate { get; set; }
 
         /// <summary>
@@ -44,6 +60,9 @@ public class PaymentIntentPaymentMethodOptionsCardMandateOptionsOptions : INeste
         /// One of: <c>day</c>, <c>month</c>, <c>sporadic</c>, <c>week</c>, or <c>year</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
 
         /// <summary>
@@ -53,12 +72,18 @@ public class PaymentIntentPaymentMethodOptionsCardMandateOptionsOptions : INeste
         /// <c>interval=sporadic</c>.
         /// </summary>
         [JsonProperty("interval_count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_count")]
+#endif
         public long? IntervalCount { get; set; }
 
         /// <summary>
         /// Unique identifier for the mandate or subscription.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
@@ -67,12 +92,19 @@ public class PaymentIntentPaymentMethodOptionsCardMandateOptionsOptions : INeste
         /// </summary>
         [JsonProperty("start_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("start_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? StartDate { get; set; }
 
         /// <summary>
         /// Specifies the type of mandates supported. Possible values are <c>india</c>.
         /// </summary>
         [JsonProperty("supported_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("supported_types")]
+#endif
         public List<string> SupportedTypes { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardOptions.cs
index 9ae2cadf1d..c673e27446 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsCardOptions : INestedOptions
     {
@@ -16,6 +19,9 @@ public class PaymentIntentPaymentMethodOptionsCardOptions : INestedOptions
         /// for this parameter unsets the stored value for this payment method type.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
@@ -24,6 +30,9 @@ public class PaymentIntentPaymentMethodOptionsCardOptions : INestedOptions
         /// be provided during confirmation.
         /// </summary>
         [JsonProperty("cvc_token")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cvc_token")]
+#endif
         public string CvcToken { get; set; }
 
         /// <summary>
@@ -33,12 +42,18 @@ public class PaymentIntentPaymentMethodOptionsCardOptions : INestedOptions
         /// href="https://stripe.com/docs/payments/installments">installments integration guide</a>.
         /// </summary>
         [JsonProperty("installments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("installments")]
+#endif
         public PaymentIntentPaymentMethodOptionsCardInstallmentsOptions Installments { get; set; }
 
         /// <summary>
         /// Configuration options for setting up an eMandate for cards issued in India.
         /// </summary>
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public PaymentIntentPaymentMethodOptionsCardMandateOptionsOptions MandateOptions { get; set; }
 
         /// <summary>
@@ -47,6 +62,9 @@ public class PaymentIntentPaymentMethodOptionsCardOptions : INestedOptions
         /// provided during confirmation.
         /// </summary>
         [JsonProperty("moto")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("moto")]
+#endif
         public bool? Moto { get; set; }
 
         /// <summary>
@@ -57,6 +75,9 @@ public class PaymentIntentPaymentMethodOptionsCardOptions : INestedOptions
         /// <c>mastercard</c>, <c>unionpay</c>, <c>unknown</c>, or <c>visa</c>.
         /// </summary>
         [JsonProperty("network")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network")]
+#endif
         public string Network { get; set; }
 
         /// <summary>
@@ -66,6 +87,9 @@ public class PaymentIntentPaymentMethodOptionsCardOptions : INestedOptions
         /// One of: <c>if_available</c>, or <c>never</c>.
         /// </summary>
         [JsonProperty("request_extended_authorization")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_extended_authorization")]
+#endif
         public string RequestExtendedAuthorization { get; set; }
 
         /// <summary>
@@ -75,6 +99,9 @@ public class PaymentIntentPaymentMethodOptionsCardOptions : INestedOptions
         /// One of: <c>if_available</c>, or <c>never</c>.
         /// </summary>
         [JsonProperty("request_incremental_authorization")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_incremental_authorization")]
+#endif
         public string RequestIncrementalAuthorization { get; set; }
 
         /// <summary>
@@ -83,6 +110,9 @@ public class PaymentIntentPaymentMethodOptionsCardOptions : INestedOptions
         /// One of: <c>if_available</c>, or <c>never</c>.
         /// </summary>
         [JsonProperty("request_multicapture")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_multicapture")]
+#endif
         public string RequestMulticapture { get; set; }
 
         /// <summary>
@@ -92,6 +122,9 @@ public class PaymentIntentPaymentMethodOptionsCardOptions : INestedOptions
         /// One of: <c>if_available</c>, or <c>never</c>.
         /// </summary>
         [JsonProperty("request_overcapture")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_overcapture")]
+#endif
         public string RequestOvercapture { get; set; }
 
         /// <summary>
@@ -107,6 +140,9 @@ public class PaymentIntentPaymentMethodOptionsCardOptions : INestedOptions
         /// One of: <c>any</c>, <c>automatic</c>, or <c>challenge</c>.
         /// </summary>
         [JsonProperty("request_three_d_secure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_three_d_secure")]
+#endif
         public string RequestThreeDSecure { get; set; }
 
         /// <summary>
@@ -114,6 +150,9 @@ public class PaymentIntentPaymentMethodOptionsCardOptions : INestedOptions
         /// provided again (i.e. using the cvc_token parameter).
         /// </summary>
         [JsonProperty("require_cvc_recollection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("require_cvc_recollection")]
+#endif
         public bool? RequireCvcRecollection { get; set; }
 
         /// <summary>
@@ -142,6 +181,9 @@ public class PaymentIntentPaymentMethodOptionsCardOptions : INestedOptions
         /// One of: <c>none</c>, <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
@@ -152,6 +194,9 @@ public class PaymentIntentPaymentMethodOptionsCardOptions : INestedOptions
         /// (including separators) will appear truncated to 22 characters.
         /// </summary>
         [JsonProperty("statement_descriptor_suffix_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_suffix_kana")]
+#endif
         public string StatementDescriptorSuffixKana { get; set; }
 
         /// <summary>
@@ -162,6 +207,9 @@ public class PaymentIntentPaymentMethodOptionsCardOptions : INestedOptions
         /// (including separators) will appear truncated to 17 characters.
         /// </summary>
         [JsonProperty("statement_descriptor_suffix_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_suffix_kanji")]
+#endif
         public string StatementDescriptorSuffixKanji { get; set; }
 
         /// <summary>
@@ -169,6 +217,9 @@ public class PaymentIntentPaymentMethodOptionsCardOptions : INestedOptions
         /// authentication details to use for this payment.
         /// </summary>
         [JsonProperty("three_d_secure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("three_d_secure")]
+#endif
         public PaymentIntentPaymentMethodOptionsCardThreeDSecureOptions ThreeDSecure { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardPresentOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardPresentOptions.cs
index 454f0c3156..f4d5919a18 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardPresentOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardPresentOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsCardPresentOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class PaymentIntentPaymentMethodOptionsCardPresentOptions : INestedOption
         /// validity window</a>.
         /// </summary>
         [JsonProperty("request_extended_authorization")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_extended_authorization")]
+#endif
         public bool? RequestExtendedAuthorization { get; set; }
 
         /// <summary>
@@ -22,6 +28,9 @@ public class PaymentIntentPaymentMethodOptionsCardPresentOptions : INestedOption
         /// response to verify support.
         /// </summary>
         [JsonProperty("request_incremental_authorization_support")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_incremental_authorization_support")]
+#endif
         public bool? RequestIncrementalAuthorizationSupport { get; set; }
 
         /// <summary>
@@ -29,6 +38,9 @@ public class PaymentIntentPaymentMethodOptionsCardPresentOptions : INestedOption
         /// international card schemes.
         /// </summary>
         [JsonProperty("routing")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing")]
+#endif
         public PaymentIntentPaymentMethodOptionsCardPresentRoutingOptions Routing { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardPresentRoutingOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardPresentRoutingOptions.cs
index b82aa68918..9881791b20 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardPresentRoutingOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardPresentRoutingOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsCardPresentRoutingOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentIntentPaymentMethodOptionsCardPresentRoutingOptions : INeste
         /// One of: <c>domestic</c>, or <c>international</c>.
         /// </summary>
         [JsonProperty("requested_priority")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested_priority")]
+#endif
         public string RequestedPriority { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsCartesBancairesOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsCartesBancairesOptions.cs
index 69639d304e..41dd7a0d1a 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsCartesBancairesOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsCartesBancairesOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsCartesBancairesOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class PaymentIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsCart
         /// One of: <c>0</c>, <c>1</c>, <c>2</c>, <c>3</c>, <c>4</c>, or <c>A</c>.
         /// </summary>
         [JsonProperty("cb_avalgo")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cb_avalgo")]
+#endif
         public string CbAvalgo { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class PaymentIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsCart
         /// and most significant bit first) that has been Base64 encoded.
         /// </summary>
         [JsonProperty("cb_exemption")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cb_exemption")]
+#endif
         public string CbExemption { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class PaymentIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsCart
         /// numeric value 0-99.
         /// </summary>
         [JsonProperty("cb_score")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cb_score")]
+#endif
         public long? CbScore { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsOptions.cs
index 2e2118cc76..2b9afde8f3 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsOpti
         /// Cartes Bancaires-specific 3DS fields.
         /// </summary>
         [JsonProperty("cartes_bancaires")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cartes_bancaires")]
+#endif
         public PaymentIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsCartesBancairesOptions CartesBancaires { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardThreeDSecureOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardThreeDSecureOptions.cs
index cb776c244f..4ebf3f204c 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardThreeDSecureOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCardThreeDSecureOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsCardThreeDSecureOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentIntentPaymentMethodOptionsCardThreeDSecureOptions : INestedO
         /// One of: <c>A</c>, <c>C</c>, <c>I</c>, <c>N</c>, <c>R</c>, <c>U</c>, or <c>Y</c>.
         /// </summary>
         [JsonProperty("ares_trans_status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ares_trans_status")]
+#endif
         public string AresTransStatus { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class PaymentIntentPaymentMethodOptionsCardThreeDSecureOptions : INestedO
         /// return the base64-encoded version, which is what you should specify here.).
         /// </summary>
         [JsonProperty("cryptogram")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cryptogram")]
+#endif
         public string Cryptogram { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class PaymentIntentPaymentMethodOptionsCardThreeDSecureOptions : INestedO
         /// One of: <c>01</c>, <c>02</c>, <c>05</c>, <c>06</c>, or <c>07</c>.
         /// </summary>
         [JsonProperty("electronic_commerce_indicator")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("electronic_commerce_indicator")]
+#endif
         public string ElectronicCommerceIndicator { get; set; }
 
         /// <summary>
@@ -33,6 +45,9 @@ public class PaymentIntentPaymentMethodOptionsCardThreeDSecureOptions : INestedO
         /// One of: <c>low_risk</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("exemption_indicator")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exemption_indicator")]
+#endif
         public string ExemptionIndicator { get; set; }
 
         /// <summary>
@@ -41,6 +56,9 @@ public class PaymentIntentPaymentMethodOptionsCardThreeDSecureOptions : INestedO
         /// accordingly.
         /// </summary>
         [JsonProperty("network_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network_options")]
+#endif
         public PaymentIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsOptions NetworkOptions { get; set; }
 
         /// <summary>
@@ -48,6 +66,9 @@ public class PaymentIntentPaymentMethodOptionsCardThreeDSecureOptions : INestedO
         /// AReq sent to the card Issuer's ACS. A string containing 2 digits from 01-99.
         /// </summary>
         [JsonProperty("requestor_challenge_indicator")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requestor_challenge_indicator")]
+#endif
         public string RequestorChallengeIndicator { get; set; }
 
         /// <summary>
@@ -55,6 +76,9 @@ public class PaymentIntentPaymentMethodOptionsCardThreeDSecureOptions : INestedO
         /// (dsTransID).
         /// </summary>
         [JsonProperty("transaction_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_id")]
+#endif
         public string TransactionId { get; set; }
 
         /// <summary>
@@ -62,6 +86,9 @@ public class PaymentIntentPaymentMethodOptionsCardThreeDSecureOptions : INestedO
         /// One of: <c>1.0.2</c>, <c>2.1.0</c>, or <c>2.2.0</c>.
         /// </summary>
         [JsonProperty("version")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("version")]
+#endif
         public string Version { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCashappOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCashappOptions.cs
index fa9fddb939..4ae671a9a8 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCashappOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCashappOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsCashappOptions : INestedOptions
     {
@@ -16,6 +19,9 @@ public class PaymentIntentPaymentMethodOptionsCashappOptions : INestedOptions
         /// for this parameter unsets the stored value for this payment method type.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
@@ -44,6 +50,9 @@ public class PaymentIntentPaymentMethodOptionsCashappOptions : INestedOptions
         /// One of: <c>none</c>, <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransferOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransferOptions.cs
index 261e3ded10..9082dfb5c4 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransferOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransferOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransferOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransferEuBankT
         /// <c>BE</c>, <c>DE</c>, <c>ES</c>, <c>FR</c>, <c>IE</c>, or <c>NL</c>.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransferOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransferOptions.cs
index f04ec506bb..b5783991d0 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransferOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransferOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransferOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransferOptions
         /// Configuration for the eu_bank_transfer funding type.
         /// </summary>
         [JsonProperty("eu_bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eu_bank_transfer")]
+#endif
         public PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransferOptions EuBankTransfer { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransferOptions
         /// <c>swift</c>, or <c>zengin</c>.
         /// </summary>
         [JsonProperty("requested_address_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested_address_types")]
+#endif
         public List<string> RequestedAddressTypes { get; set; }
 
         /// <summary>
@@ -31,6 +40,9 @@ public class PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransferOptions
         /// <c>mx_bank_transfer</c>, or <c>us_bank_transfer</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCustomerBalanceOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCustomerBalanceOptions.cs
index 7b0fa9222c..bb02415a22 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCustomerBalanceOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsCustomerBalanceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsCustomerBalanceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentIntentPaymentMethodOptionsCustomerBalanceOptions : INestedOp
         /// <c>bank_transfer</c>.
         /// </summary>
         [JsonProperty("bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_transfer")]
+#endif
         public PaymentIntentPaymentMethodOptionsCustomerBalanceBankTransferOptions BankTransfer { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentIntentPaymentMethodOptionsCustomerBalanceOptions : INestedOp
         /// balance. Permitted values include: <c>bank_transfer</c>.
         /// </summary>
         [JsonProperty("funding_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding_type")]
+#endif
         public string FundingType { get; set; }
 
         /// <summary>
@@ -44,6 +53,9 @@ public class PaymentIntentPaymentMethodOptionsCustomerBalanceOptions : INestedOp
         /// <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsEpsOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsEpsOptions.cs
index bb2ffa1bbf..e272f14483 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsEpsOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsEpsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsEpsOptions : INestedOptions
     {
@@ -30,6 +33,9 @@ public class PaymentIntentPaymentMethodOptionsEpsOptions : INestedOptions
         /// <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsFpxOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsFpxOptions.cs
index f189fd9bb5..0eaece75d7 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsFpxOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsFpxOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsFpxOptions : INestedOptions
     {
@@ -30,6 +33,9 @@ public class PaymentIntentPaymentMethodOptionsFpxOptions : INestedOptions
         /// <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsGiropayOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsGiropayOptions.cs
index 3e6a5fa74b..02a5514577 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsGiropayOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsGiropayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsGiropayOptions : INestedOptions
     {
@@ -30,6 +33,9 @@ public class PaymentIntentPaymentMethodOptionsGiropayOptions : INestedOptions
         /// <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsGrabpayOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsGrabpayOptions.cs
index 5002c7092d..decfe3cb01 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsGrabpayOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsGrabpayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsGrabpayOptions : INestedOptions
     {
@@ -30,6 +33,9 @@ public class PaymentIntentPaymentMethodOptionsGrabpayOptions : INestedOptions
         /// <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsIdealOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsIdealOptions.cs
index 6487b1eb6d..e40d7e6597 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsIdealOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsIdealOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsIdealOptions : INestedOptions
     {
@@ -31,6 +34,9 @@ public class PaymentIntentPaymentMethodOptionsIdealOptions : INestedOptions
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsKakaoPayOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsKakaoPayOptions.cs
index 0035ab3a50..045cd4a190 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsKakaoPayOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsKakaoPayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsKakaoPayOptions : INestedOptions
     {
@@ -16,6 +19,9 @@ public class PaymentIntentPaymentMethodOptionsKakaoPayOptions : INestedOptions
         /// for this parameter unsets the stored value for this payment method type.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
@@ -40,6 +46,9 @@ public class PaymentIntentPaymentMethodOptionsKakaoPayOptions : INestedOptions
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsKlarnaOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsKlarnaOptions.cs
index 35abe597eb..04df1da353 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsKlarnaOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsKlarnaOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsKlarnaOptions : INestedOptions
     {
@@ -16,6 +19,9 @@ public class PaymentIntentPaymentMethodOptionsKlarnaOptions : INestedOptions
         /// for this parameter unsets the stored value for this payment method type.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
@@ -30,6 +36,9 @@ public class PaymentIntentPaymentMethodOptionsKlarnaOptions : INestedOptions
         /// <c>pl-PL</c>, <c>pt-PT</c>, <c>ro-RO</c>, <c>sv-FI</c>, or <c>sv-SE</c>.
         /// </summary>
         [JsonProperty("preferred_locale")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_locale")]
+#endif
         public string PreferredLocale { get; set; }
 
         /// <summary>
@@ -57,6 +66,9 @@ public class PaymentIntentPaymentMethodOptionsKlarnaOptions : INestedOptions
         /// <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsKonbiniOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsKonbiniOptions.cs
index f676fa49b3..fc8ad7dabf 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsKonbiniOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsKonbiniOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsKonbiniOptions : INestedOptions
     {
@@ -13,6 +16,9 @@ public class PaymentIntentPaymentMethodOptionsKonbiniOptions : INestedOptions
         /// case of insufficient uniqueness. We recommend to use the customer's phone number.
         /// </summary>
         [JsonProperty("confirmation_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("confirmation_number")]
+#endif
         public string ConfirmationNumber { get; set; }
 
         /// <summary>
@@ -22,6 +28,9 @@ public class PaymentIntentPaymentMethodOptionsKonbiniOptions : INestedOptions
         /// Wednesday 23:59:59 JST. Defaults to 3 days.
         /// </summary>
         [JsonProperty("expires_after_days")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_after_days")]
+#endif
         public long? ExpiresAfterDays { get; set; }
 
         /// <summary>
@@ -30,6 +39,10 @@ public class PaymentIntentPaymentMethodOptionsKonbiniOptions : INestedOptions
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpiresAt { get; set; }
 
         /// <summary>
@@ -37,6 +50,9 @@ public class PaymentIntentPaymentMethodOptionsKonbiniOptions : INestedOptions
         /// convenience store.
         /// </summary>
         [JsonProperty("product_description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_description")]
+#endif
         public string ProductDescription { get; set; }
 
         /// <summary>
@@ -64,6 +80,9 @@ public class PaymentIntentPaymentMethodOptionsKonbiniOptions : INestedOptions
         /// <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsKrCardOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsKrCardOptions.cs
index 08b9e47a65..e17dce97c8 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsKrCardOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsKrCardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsKrCardOptions : INestedOptions
     {
@@ -16,6 +19,9 @@ public class PaymentIntentPaymentMethodOptionsKrCardOptions : INestedOptions
         /// for this parameter unsets the stored value for this payment method type.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
@@ -40,6 +46,9 @@ public class PaymentIntentPaymentMethodOptionsKrCardOptions : INestedOptions
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsLinkOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsLinkOptions.cs
index 61ce871ded..43cbf7883d 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsLinkOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsLinkOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsLinkOptions : INestedOptions
     {
@@ -17,6 +20,9 @@ public class PaymentIntentPaymentMethodOptionsLinkOptions : INestedOptions
         /// for this parameter unsets the stored value for this payment method type.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
@@ -24,6 +30,9 @@ public class PaymentIntentPaymentMethodOptionsLinkOptions : INestedOptions
         /// </summary>
         [Obsolete("This property is deprecated, please refer to the description for details.")]
         [JsonProperty("persistent_token")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("persistent_token")]
+#endif
         public string PersistentToken { get; set; }
 
         /// <summary>
@@ -52,6 +61,9 @@ public class PaymentIntentPaymentMethodOptionsLinkOptions : INestedOptions
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsMobilepayOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsMobilepayOptions.cs
index f2482ee251..57916a81d8 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsMobilepayOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsMobilepayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsMobilepayOptions : INestedOptions
     {
@@ -16,6 +19,9 @@ public class PaymentIntentPaymentMethodOptionsMobilepayOptions : INestedOptions
         /// for this parameter unsets the stored value for this payment method type.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
@@ -43,6 +49,9 @@ public class PaymentIntentPaymentMethodOptionsMobilepayOptions : INestedOptions
         /// <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsMultibancoOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsMultibancoOptions.cs
index d4ead57896..013dbb9ee4 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsMultibancoOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsMultibancoOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsMultibancoOptions : INestedOptions
     {
@@ -30,6 +33,9 @@ public class PaymentIntentPaymentMethodOptionsMultibancoOptions : INestedOptions
         /// <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsNaverPayOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsNaverPayOptions.cs
index 7aef8ad5a4..a1b4ef4361 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsNaverPayOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsNaverPayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsNaverPayOptions : INestedOptions
     {
@@ -16,6 +19,9 @@ public class PaymentIntentPaymentMethodOptionsNaverPayOptions : INestedOptions
         /// for this parameter unsets the stored value for this payment method type.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsOptions.cs
index ac49640498..c8fefc7033 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// ACSS Debit payment method options.
         /// </summary>
         [JsonProperty("acss_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acss_debit")]
+#endif
         public PaymentIntentPaymentMethodOptionsAcssDebitOptions AcssDebit { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// Affirm payment method options.
         /// </summary>
         [JsonProperty("affirm")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("affirm")]
+#endif
         public PaymentIntentPaymentMethodOptionsAffirmOptions Affirm { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// about the Afterpay Clearpay payment method options.
         /// </summary>
         [JsonProperty("afterpay_clearpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("afterpay_clearpay")]
+#endif
         public PaymentIntentPaymentMethodOptionsAfterpayClearpayOptions AfterpayClearpay { get; set; }
 
         /// <summary>
@@ -31,6 +43,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// Alipay payment method options.
         /// </summary>
         [JsonProperty("alipay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alipay")]
+#endif
         public PaymentIntentPaymentMethodOptionsAlipayOptions Alipay { get; set; }
 
         /// <summary>
@@ -38,6 +53,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// payment method options.
         /// </summary>
         [JsonProperty("alma")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alma")]
+#endif
         public PaymentIntentPaymentMethodOptionsAlmaOptions Alma { get; set; }
 
         /// <summary>
@@ -45,6 +63,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// Amazon Pay payment method options.
         /// </summary>
         [JsonProperty("amazon_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amazon_pay")]
+#endif
         public PaymentIntentPaymentMethodOptionsAmazonPayOptions AmazonPay { get; set; }
 
         /// <summary>
@@ -52,6 +73,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// the AU BECS Direct Debit payment method options.
         /// </summary>
         [JsonProperty("au_becs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("au_becs_debit")]
+#endif
         public PaymentIntentPaymentMethodOptionsAuBecsDebitOptions AuBecsDebit { get; set; }
 
         /// <summary>
@@ -59,6 +83,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// BACS Debit payment method options.
         /// </summary>
         [JsonProperty("bacs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bacs_debit")]
+#endif
         public PaymentIntentPaymentMethodOptionsBacsDebitOptions BacsDebit { get; set; }
 
         /// <summary>
@@ -66,6 +93,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// Bancontact payment method options.
         /// </summary>
         [JsonProperty("bancontact")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bancontact")]
+#endif
         public PaymentIntentPaymentMethodOptionsBancontactOptions Bancontact { get; set; }
 
         /// <summary>
@@ -73,6 +103,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// payment method options.
         /// </summary>
         [JsonProperty("blik")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("blik")]
+#endif
         public PaymentIntentPaymentMethodOptionsBlikOptions Blik { get; set; }
 
         /// <summary>
@@ -80,12 +113,18 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// Boleto payment method options.
         /// </summary>
         [JsonProperty("boleto")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("boleto")]
+#endif
         public PaymentIntentPaymentMethodOptionsBoletoOptions Boleto { get; set; }
 
         /// <summary>
         /// Configuration for any card payments attempted on this PaymentIntent.
         /// </summary>
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public PaymentIntentPaymentMethodOptionsCardOptions Card { get; set; }
 
         /// <summary>
@@ -93,6 +132,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// Card Present payment method options.
         /// </summary>
         [JsonProperty("card_present")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_present")]
+#endif
         public PaymentIntentPaymentMethodOptionsCardPresentOptions CardPresent { get; set; }
 
         /// <summary>
@@ -100,6 +142,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// App Pay payment method options.
         /// </summary>
         [JsonProperty("cashapp")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cashapp")]
+#endif
         public PaymentIntentPaymentMethodOptionsCashappOptions Cashapp { get; set; }
 
         /// <summary>
@@ -107,6 +152,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// the customer balance payment method options.
         /// </summary>
         [JsonProperty("customer_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_balance")]
+#endif
         public PaymentIntentPaymentMethodOptionsCustomerBalanceOptions CustomerBalance { get; set; }
 
         /// <summary>
@@ -114,6 +162,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// payment method options.
         /// </summary>
         [JsonProperty("eps")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eps")]
+#endif
         public PaymentIntentPaymentMethodOptionsEpsOptions Eps { get; set; }
 
         /// <summary>
@@ -121,6 +172,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// payment method options.
         /// </summary>
         [JsonProperty("fpx")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fpx")]
+#endif
         public PaymentIntentPaymentMethodOptionsFpxOptions Fpx { get; set; }
 
         /// <summary>
@@ -128,6 +182,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// Giropay payment method options.
         /// </summary>
         [JsonProperty("giropay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("giropay")]
+#endif
         public PaymentIntentPaymentMethodOptionsGiropayOptions Giropay { get; set; }
 
         /// <summary>
@@ -135,6 +192,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// Grabpay payment method options.
         /// </summary>
         [JsonProperty("grabpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("grabpay")]
+#endif
         public PaymentIntentPaymentMethodOptionsGrabpayOptions Grabpay { get; set; }
 
         /// <summary>
@@ -142,6 +202,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// payment method options.
         /// </summary>
         [JsonProperty("ideal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ideal")]
+#endif
         public PaymentIntentPaymentMethodOptionsIdealOptions Ideal { get; set; }
 
         /// <summary>
@@ -149,6 +212,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// the Card Present payment method options.
         /// </summary>
         [JsonProperty("interac_present")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interac_present")]
+#endif
         public PaymentIntentPaymentMethodOptionsInteracPresentOptions InteracPresent { get; set; }
 
         /// <summary>
@@ -156,6 +222,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// Kakao Pay payment method options.
         /// </summary>
         [JsonProperty("kakao_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kakao_pay")]
+#endif
         public PaymentIntentPaymentMethodOptionsKakaoPayOptions KakaoPay { get; set; }
 
         /// <summary>
@@ -163,6 +232,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// Klarna payment method options.
         /// </summary>
         [JsonProperty("klarna")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("klarna")]
+#endif
         public PaymentIntentPaymentMethodOptionsKlarnaOptions Klarna { get; set; }
 
         /// <summary>
@@ -170,6 +242,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// Konbini payment method options.
         /// </summary>
         [JsonProperty("konbini")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("konbini")]
+#endif
         public PaymentIntentPaymentMethodOptionsKonbiniOptions Konbini { get; set; }
 
         /// <summary>
@@ -177,6 +252,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// Card payment method options.
         /// </summary>
         [JsonProperty("kr_card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kr_card")]
+#endif
         public PaymentIntentPaymentMethodOptionsKrCardOptions KrCard { get; set; }
 
         /// <summary>
@@ -184,6 +262,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// payment method options.
         /// </summary>
         [JsonProperty("link")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("link")]
+#endif
         public PaymentIntentPaymentMethodOptionsLinkOptions Link { get; set; }
 
         /// <summary>
@@ -191,6 +272,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// MobilePay payment method options.
         /// </summary>
         [JsonProperty("mobilepay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mobilepay")]
+#endif
         public PaymentIntentPaymentMethodOptionsMobilepayOptions Mobilepay { get; set; }
 
         /// <summary>
@@ -198,6 +282,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// Multibanco payment method options.
         /// </summary>
         [JsonProperty("multibanco")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("multibanco")]
+#endif
         public PaymentIntentPaymentMethodOptionsMultibancoOptions Multibanco { get; set; }
 
         /// <summary>
@@ -205,6 +292,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// Naver Pay payment method options.
         /// </summary>
         [JsonProperty("naver_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("naver_pay")]
+#endif
         public PaymentIntentPaymentMethodOptionsNaverPayOptions NaverPay { get; set; }
 
         /// <summary>
@@ -212,6 +302,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// payment method options.
         /// </summary>
         [JsonProperty("oxxo")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("oxxo")]
+#endif
         public PaymentIntentPaymentMethodOptionsOxxoOptions Oxxo { get; set; }
 
         /// <summary>
@@ -219,6 +312,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// Przelewy24 payment method options.
         /// </summary>
         [JsonProperty("p24")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("p24")]
+#endif
         public PaymentIntentPaymentMethodOptionsP24Options P24 { get; set; }
 
         /// <summary>
@@ -226,6 +322,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// PayByBank payment method options.
         /// </summary>
         [JsonProperty("pay_by_bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_by_bank")]
+#endif
         public PaymentIntentPaymentMethodOptionsPayByBankOptions PayByBank { get; set; }
 
         /// <summary>
@@ -233,6 +332,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// payment method options.
         /// </summary>
         [JsonProperty("payco")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payco")]
+#endif
         public PaymentIntentPaymentMethodOptionsPaycoOptions Payco { get; set; }
 
         /// <summary>
@@ -240,6 +342,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// PayNow payment method options.
         /// </summary>
         [JsonProperty("paynow")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paynow")]
+#endif
         public PaymentIntentPaymentMethodOptionsPaynowOptions Paynow { get; set; }
 
         /// <summary>
@@ -247,6 +352,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// PayPal payment method options.
         /// </summary>
         [JsonProperty("paypal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paypal")]
+#endif
         public PaymentIntentPaymentMethodOptionsPaypalOptions Paypal { get; set; }
 
         /// <summary>
@@ -254,6 +362,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// payment method options.
         /// </summary>
         [JsonProperty("pix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pix")]
+#endif
         public PaymentIntentPaymentMethodOptionsPixOptions Pix { get; set; }
 
         /// <summary>
@@ -261,6 +372,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// PromptPay payment method options.
         /// </summary>
         [JsonProperty("promptpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promptpay")]
+#endif
         public PaymentIntentPaymentMethodOptionsPromptpayOptions Promptpay { get; set; }
 
         /// <summary>
@@ -268,6 +382,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// Revolut Pay payment method options.
         /// </summary>
         [JsonProperty("revolut_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("revolut_pay")]
+#endif
         public PaymentIntentPaymentMethodOptionsRevolutPayOptions RevolutPay { get; set; }
 
         /// <summary>
@@ -275,6 +392,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// Samsung Pay payment method options.
         /// </summary>
         [JsonProperty("samsung_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("samsung_pay")]
+#endif
         public PaymentIntentPaymentMethodOptionsSamsungPayOptions SamsungPay { get; set; }
 
         /// <summary>
@@ -282,6 +402,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// SEPA Debit payment method options.
         /// </summary>
         [JsonProperty("sepa_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_debit")]
+#endif
         public PaymentIntentPaymentMethodOptionsSepaDebitOptions SepaDebit { get; set; }
 
         /// <summary>
@@ -289,6 +412,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// SOFORT payment method options.
         /// </summary>
         [JsonProperty("sofort")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sofort")]
+#endif
         public PaymentIntentPaymentMethodOptionsSofortOptions Sofort { get; set; }
 
         /// <summary>
@@ -296,6 +422,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// payment method options.
         /// </summary>
         [JsonProperty("swish")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("swish")]
+#endif
         public PaymentIntentPaymentMethodOptionsSwishOptions Swish { get; set; }
 
         /// <summary>
@@ -303,6 +432,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// payment method options.
         /// </summary>
         [JsonProperty("twint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("twint")]
+#endif
         public PaymentIntentPaymentMethodOptionsTwintOptions Twint { get; set; }
 
         /// <summary>
@@ -310,6 +442,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// the US bank account payment method options.
         /// </summary>
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public PaymentIntentPaymentMethodOptionsUsBankAccountOptions UsBankAccount { get; set; }
 
         /// <summary>
@@ -317,6 +452,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// WeChat Pay payment method options.
         /// </summary>
         [JsonProperty("wechat_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wechat_pay")]
+#endif
         public PaymentIntentPaymentMethodOptionsWechatPayOptions WechatPay { get; set; }
 
         /// <summary>
@@ -324,6 +462,9 @@ public class PaymentIntentPaymentMethodOptionsOptions : INestedOptions
         /// payment method options.
         /// </summary>
         [JsonProperty("zip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("zip")]
+#endif
         public PaymentIntentPaymentMethodOptionsZipOptions Zip { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsOxxoOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsOxxoOptions.cs
index 0ebd64184a..79106d0c60 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsOxxoOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsOxxoOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsOxxoOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class PaymentIntentPaymentMethodOptionsOxxoOptions : INestedOptions
         /// expire on Wednesday at 23:59 America/Mexico_City time.
         /// </summary>
         [JsonProperty("expires_after_days")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_after_days")]
+#endif
         public long? ExpiresAfterDays { get; set; }
 
         /// <summary>
@@ -38,6 +44,9 @@ public class PaymentIntentPaymentMethodOptionsOxxoOptions : INestedOptions
         /// <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsP24Options.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsP24Options.cs
index eb7fc67e6a..a85e26e66b 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsP24Options.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsP24Options.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsP24Options : INestedOptions
     {
@@ -30,12 +33,18 @@ public class PaymentIntentPaymentMethodOptionsP24Options : INestedOptions
         /// <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
         /// Confirm that the payer has accepted the P24 terms and conditions.
         /// </summary>
         [JsonProperty("tos_shown_and_accepted")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tos_shown_and_accepted")]
+#endif
         public bool? TosShownAndAccepted { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsPaycoOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsPaycoOptions.cs
index 90b26f7af3..8620080b3f 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsPaycoOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsPaycoOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsPaycoOptions : INestedOptions
     {
@@ -16,6 +19,9 @@ public class PaymentIntentPaymentMethodOptionsPaycoOptions : INestedOptions
         /// for this parameter unsets the stored value for this payment method type.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsPaynowOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsPaynowOptions.cs
index 2dc6b91ccd..5fd7a71f8f 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsPaynowOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsPaynowOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsPaynowOptions : INestedOptions
     {
@@ -30,6 +33,9 @@ public class PaymentIntentPaymentMethodOptionsPaynowOptions : INestedOptions
         /// <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsPaypalOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsPaypalOptions.cs
index 1fd2de6f7a..1dcd717cc2 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsPaypalOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsPaypalOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsPaypalOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentIntentPaymentMethodOptionsPaypalOptions : INestedOptions
         /// Controls when the funds will be captured from the customer's account.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class PaymentIntentPaymentMethodOptionsPaypalOptions : INestedOptions
         /// <c>pl-PL</c>, <c>pt-PT</c>, <c>sk-SK</c>, or <c>sv-SE</c>.
         /// </summary>
         [JsonProperty("preferred_locale")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_locale")]
+#endif
         public string PreferredLocale { get; set; }
 
         /// <summary>
@@ -28,12 +37,18 @@ public class PaymentIntentPaymentMethodOptionsPaypalOptions : INestedOptions
         /// settings to block multiple payments per invoice ID.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
         /// The risk correlation ID for an on-session payment using a saved PayPal payment method.
         /// </summary>
         [JsonProperty("risk_correlation_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("risk_correlation_id")]
+#endif
         public string RiskCorrelationId { get; set; }
 
         /// <summary>
@@ -62,6 +77,9 @@ public class PaymentIntentPaymentMethodOptionsPaypalOptions : INestedOptions
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsPixOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsPixOptions.cs
index b4560946ce..8a56462c5a 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsPixOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsPixOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsPixOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class PaymentIntentPaymentMethodOptionsPixOptions : INestedOptions
         /// Defaults to 86400 seconds.
         /// </summary>
         [JsonProperty("expires_after_seconds")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_after_seconds")]
+#endif
         public long? ExpiresAfterSeconds { get; set; }
 
         /// <summary>
@@ -20,6 +26,10 @@ public class PaymentIntentPaymentMethodOptionsPixOptions : INestedOptions
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpiresAt { get; set; }
 
         /// <summary>
@@ -47,6 +57,9 @@ public class PaymentIntentPaymentMethodOptionsPixOptions : INestedOptions
         /// <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsPromptpayOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsPromptpayOptions.cs
index 7666412d56..e4d8b29550 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsPromptpayOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsPromptpayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsPromptpayOptions : INestedOptions
     {
@@ -30,6 +33,9 @@ public class PaymentIntentPaymentMethodOptionsPromptpayOptions : INestedOptions
         /// <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsRevolutPayOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsRevolutPayOptions.cs
index bde4224a82..e2b868723d 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsRevolutPayOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsRevolutPayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsRevolutPayOptions : INestedOptions
     {
@@ -16,6 +19,9 @@ public class PaymentIntentPaymentMethodOptionsRevolutPayOptions : INestedOptions
         /// for this parameter unsets the stored value for this payment method type.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
@@ -40,6 +46,9 @@ public class PaymentIntentPaymentMethodOptionsRevolutPayOptions : INestedOptions
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsSamsungPayOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsSamsungPayOptions.cs
index a913ad2ee7..23ba364855 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsSamsungPayOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsSamsungPayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsSamsungPayOptions : INestedOptions
     {
@@ -16,6 +19,9 @@ public class PaymentIntentPaymentMethodOptionsSamsungPayOptions : INestedOptions
         /// for this parameter unsets the stored value for this payment method type.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsSepaDebitMandateOptionsOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsSepaDebitMandateOptionsOptions.cs
index 17e197c7b2..b600776cc2 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsSepaDebitMandateOptionsOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsSepaDebitMandateOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsSepaDebitMandateOptionsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class PaymentIntentPaymentMethodOptionsSepaDebitMandateOptionsOptions : I
         /// '/', '_', '-', '&amp;', '.'. Cannot begin with 'STRIPE'.
         /// </summary>
         [JsonProperty("reference_prefix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference_prefix")]
+#endif
         public string ReferencePrefix { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsSepaDebitOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsSepaDebitOptions.cs
index 9363368888..247b3d4ba2 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsSepaDebitOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsSepaDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsSepaDebitOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentIntentPaymentMethodOptionsSepaDebitOptions : INestedOptions
         /// Additional fields for Mandate creation.
         /// </summary>
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public PaymentIntentPaymentMethodOptionsSepaDebitMandateOptionsOptions MandateOptions { get; set; }
 
         /// <summary>
@@ -37,6 +43,9 @@ public class PaymentIntentPaymentMethodOptionsSepaDebitOptions : INestedOptions
         /// One of: <c>none</c>, <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
@@ -45,6 +54,9 @@ public class PaymentIntentPaymentMethodOptionsSepaDebitOptions : INestedOptions
         /// and 15 calendar days from now.
         /// </summary>
         [JsonProperty("target_date")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("target_date")]
+#endif
         public string TargetDate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsSofortOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsSofortOptions.cs
index 988f63814a..454e7fd053 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsSofortOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsSofortOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsSofortOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentIntentPaymentMethodOptionsSofortOptions : INestedOptions
         /// One of: <c>de</c>, <c>en</c>, <c>es</c>, <c>fr</c>, <c>it</c>, <c>nl</c>, or <c>pl</c>.
         /// </summary>
         [JsonProperty("preferred_language")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_language")]
+#endif
         public string PreferredLanguage { get; set; }
 
         /// <summary>
@@ -38,6 +44,9 @@ public class PaymentIntentPaymentMethodOptionsSofortOptions : INestedOptions
         /// One of: <c>none</c>, or <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsSwishOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsSwishOptions.cs
index f198ecac19..c665d219c5 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsSwishOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsSwishOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsSwishOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentIntentPaymentMethodOptionsSwishOptions : INestedOptions
         /// A reference for this payment to be displayed in the Swish app.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
@@ -36,6 +42,9 @@ public class PaymentIntentPaymentMethodOptionsSwishOptions : INestedOptions
         /// <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsTwintOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsTwintOptions.cs
index 88da95ea44..0d8da01d92 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsTwintOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsTwintOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsTwintOptions : INestedOptions
     {
@@ -30,6 +33,9 @@ public class PaymentIntentPaymentMethodOptionsTwintOptions : INestedOptions
         /// <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsFiltersOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsFiltersOptions.cs
index b2b4fa4969..1425a20ab0 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsFiltersOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsFiltersOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsFiltersOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsF
         /// One of: <c>checking</c>, or <c>savings</c>.
         /// </summary>
         [JsonProperty("account_subcategories")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_subcategories")]
+#endif
         public List<string> AccountSubcategories { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions.cs
index 77c0c6e23b..e799ae2dab 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsO
         /// method.
         /// </summary>
         [JsonProperty("filters")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("filters")]
+#endif
         public PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsFiltersOptions Filters { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsO
         /// <c>transactions</c>.
         /// </summary>
         [JsonProperty("permissions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("permissions")]
+#endif
         public List<string> Permissions { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsO
         /// One of: <c>balances</c>, <c>ownership</c>, or <c>transactions</c>.
         /// </summary>
         [JsonProperty("prefetch")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("prefetch")]
+#endif
         public List<string> Prefetch { get; set; }
 
         /// <summary>
@@ -35,6 +47,9 @@ public class PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsO
         /// user will be redirected to this URL to return to your app.
         /// </summary>
         [JsonProperty("return_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_url")]
+#endif
         public string ReturnUrl { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountMandateOptionsOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountMandateOptionsOptions.cs
index d850f16d6f..b8bbea04b3 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountMandateOptionsOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountMandateOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsUsBankAccountMandateOptionsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentIntentPaymentMethodOptionsUsBankAccountMandateOptionsOptions
         /// The method used to collect offline mandate customer acceptance.
         /// </summary>
         [JsonProperty("collection_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("collection_method")]
+#endif
         public string CollectionMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountNetworksOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountNetworksOptions.cs
index c6abb0992e..7c0ba5f61d 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountNetworksOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountNetworksOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsUsBankAccountNetworksOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class PaymentIntentPaymentMethodOptionsUsBankAccountNetworksOptions : INe
         /// One of: <c>ach</c>, or <c>us_domestic_wire</c>.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public List<string> Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountOptions.cs
index 28a91b6c7c..7dc575a6de 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsUsBankAccountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsUsBankAccountOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class PaymentIntentPaymentMethodOptionsUsBankAccountOptions : INestedOpti
         /// Additional fields for Financial Connections Session creation.
         /// </summary>
         [JsonProperty("financial_connections")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_connections")]
+#endif
         public PaymentIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions FinancialConnections { get; set; }
 
         /// <summary>
         /// Additional fields for Mandate creation.
         /// </summary>
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public PaymentIntentPaymentMethodOptionsUsBankAccountMandateOptionsOptions MandateOptions { get; set; }
 
         /// <summary>
         /// Additional fields for network related functions.
         /// </summary>
         [JsonProperty("networks")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("networks")]
+#endif
         public PaymentIntentPaymentMethodOptionsUsBankAccountNetworksOptions Networks { get; set; }
 
         /// <summary>
@@ -28,6 +40,9 @@ public class PaymentIntentPaymentMethodOptionsUsBankAccountOptions : INestedOpti
         /// One of: <c>fastest</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("preferred_settlement_speed")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_settlement_speed")]
+#endif
         public string PreferredSettlementSpeed { get; set; }
 
         /// <summary>
@@ -56,6 +71,9 @@ public class PaymentIntentPaymentMethodOptionsUsBankAccountOptions : INestedOpti
         /// One of: <c>none</c>, <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
@@ -64,6 +82,9 @@ public class PaymentIntentPaymentMethodOptionsUsBankAccountOptions : INestedOpti
         /// and 15 calendar days from now.
         /// </summary>
         [JsonProperty("target_date")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("target_date")]
+#endif
         public string TargetDate { get; set; }
 
         /// <summary>
@@ -71,6 +92,9 @@ public class PaymentIntentPaymentMethodOptionsUsBankAccountOptions : INestedOpti
         /// One of: <c>automatic</c>, <c>instant</c>, or <c>microdeposits</c>.
         /// </summary>
         [JsonProperty("verification_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification_method")]
+#endif
         public string VerificationMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsWechatPayOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsWechatPayOptions.cs
index c45f0c9ff6..93b45f1908 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsWechatPayOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsWechatPayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsWechatPayOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentIntentPaymentMethodOptionsWechatPayOptions : INestedOptions
         /// The app ID registered with WeChat Pay. Only required when client is ios or android.
         /// </summary>
         [JsonProperty("app_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("app_id")]
+#endif
         public string AppId { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class PaymentIntentPaymentMethodOptionsWechatPayOptions : INestedOptions
         /// One of: <c>android</c>, <c>ios</c>, or <c>web</c>.
         /// </summary>
         [JsonProperty("client")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("client")]
+#endif
         public string Client { get; set; }
 
         /// <summary>
@@ -43,6 +52,9 @@ public class PaymentIntentPaymentMethodOptionsWechatPayOptions : INestedOptions
         /// <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsZipOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsZipOptions.cs
index 5027ca5b9a..f7090928c6 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsZipOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentPaymentMethodOptionsZipOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentPaymentMethodOptionsZipOptions : INestedOptions
     {
@@ -30,6 +33,9 @@ public class PaymentIntentPaymentMethodOptionsZipOptions : INestedOptions
         /// <c>off_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentRadarOptionsOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentRadarOptionsOptions.cs
index 11ee244102..665d230e3b 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentRadarOptionsOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentRadarOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentRadarOptionsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class PaymentIntentRadarOptionsOptions : INestedOptions
         /// predictions on your payments.
         /// </summary>
         [JsonProperty("session")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("session")]
+#endif
         public string Session { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentService.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentService.cs
index f45b85871d..a6a04ee290 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentService.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class PaymentIntentService : Service<PaymentIntent>,
+    public class PaymentIntentService : Service,
         ICreatable<PaymentIntent, PaymentIntentCreateOptions>,
         IListable<PaymentIntent, PaymentIntentListOptions>,
         IRetrievable<PaymentIntent, PaymentIntentGetOptions>,
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentTransferDataOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentTransferDataOptions.cs
index 4031d6e4dd..931f0d6319 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentTransferDataOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentTransferDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentTransferDataOptions : INestedOptions
     {
@@ -15,6 +18,9 @@ public class PaymentIntentTransferDataOptions : INestedOptions
         /// might be a better fit for your integration.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -24,6 +30,9 @@ public class PaymentIntentTransferDataOptions : INestedOptions
         /// <c>transfer</c> field.
         /// </summary>
         [JsonProperty("destination")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination")]
+#endif
         public string Destination { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentUpdateOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentUpdateOptions.cs
index 8644115ee9..0acb33634c 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentUpdateOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -17,6 +20,9 @@ public class PaymentIntentUpdateOptions : BaseOptions, IHasMetadata
         /// 99999999 for a USD charge of $999,999.99).
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -28,6 +34,9 @@ public class PaymentIntentUpdateOptions : BaseOptions, IHasMetadata
         /// accounts</a>.
         /// </summary>
         [JsonProperty("application_fee_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_amount")]
+#endif
         public long? ApplicationFeeAmount { get; set; }
 
         /// <summary>
@@ -35,6 +44,9 @@ public class PaymentIntentUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>automatic</c>, <c>automatic_async</c>, or <c>manual</c>.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
@@ -43,6 +55,9 @@ public class PaymentIntentUpdateOptions : BaseOptions, IHasMetadata
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -60,12 +75,18 @@ public class PaymentIntentUpdateOptions : BaseOptions, IHasMetadata
         /// payment method representing the card is created and attached to the Customer instead.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -75,6 +96,9 @@ public class PaymentIntentUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -84,6 +108,9 @@ public class PaymentIntentUpdateOptions : BaseOptions, IHasMetadata
         /// an empty string.
         /// </summary>
         [JsonProperty("payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method")]
+#endif
         public string PaymentMethod { get; set; }
 
         /// <summary>
@@ -92,6 +119,9 @@ public class PaymentIntentUpdateOptions : BaseOptions, IHasMetadata
         /// configuration</a> to use with this PaymentIntent.
         /// </summary>
         [JsonProperty("payment_method_configuration")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_configuration")]
+#endif
         public string PaymentMethodConfiguration { get; set; }
 
         /// <summary>
@@ -101,12 +131,18 @@ public class PaymentIntentUpdateOptions : BaseOptions, IHasMetadata
         /// property on the PaymentIntent.
         /// </summary>
         [JsonProperty("payment_method_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_data")]
+#endif
         public PaymentIntentPaymentMethodDataOptions PaymentMethodData { get; set; }
 
         /// <summary>
         /// Payment-method-specific configuration for this PaymentIntent.
         /// </summary>
         [JsonProperty("payment_method_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_options")]
+#endif
         public PaymentIntentPaymentMethodOptionsOptions PaymentMethodOptions { get; set; }
 
         /// <summary>
@@ -115,6 +151,9 @@ public class PaymentIntentUpdateOptions : BaseOptions, IHasMetadata
         /// href="https://dashboard.stripe.com/settings/payment_methods">Stripe Dashboard</a>.
         /// </summary>
         [JsonProperty("payment_method_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_types")]
+#endif
         public List<string> PaymentMethodTypes { get; set; }
 
         /// <summary>
@@ -124,6 +163,9 @@ public class PaymentIntentUpdateOptions : BaseOptions, IHasMetadata
         /// settings</a>.
         /// </summary>
         [JsonProperty("receipt_email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("receipt_email")]
+#endif
         public string ReceiptEmail { get; set; }
 
         /// <summary>
@@ -152,12 +194,18 @@ public class PaymentIntentUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
         /// Shipping information for this PaymentIntent.
         /// </summary>
         [JsonProperty("shipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping")]
+#endif
         public ChargeShippingOptions Shipping { get; set; }
 
         /// <summary>
@@ -172,6 +220,9 @@ public class PaymentIntentUpdateOptions : BaseOptions, IHasMetadata
         /// instead.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
 
         /// <summary>
@@ -181,6 +232,9 @@ public class PaymentIntentUpdateOptions : BaseOptions, IHasMetadata
         /// customer's statement.
         /// </summary>
         [JsonProperty("statement_descriptor_suffix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_suffix")]
+#endif
         public string StatementDescriptorSuffix { get; set; }
 
         /// <summary>
@@ -189,6 +243,9 @@ public class PaymentIntentUpdateOptions : BaseOptions, IHasMetadata
         /// for connected accounts</a>.
         /// </summary>
         [JsonProperty("transfer_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_data")]
+#endif
         public PaymentIntentTransferDataOptions TransferData { get; set; }
 
         /// <summary>
@@ -198,6 +255,9 @@ public class PaymentIntentUpdateOptions : BaseOptions, IHasMetadata
         /// accounts</a>.
         /// </summary>
         [JsonProperty("transfer_group")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_group")]
+#endif
         public string TransferGroup { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentIntents/PaymentIntentVerifyMicrodepositsOptions.cs b/src/Stripe.net/Services/PaymentIntents/PaymentIntentVerifyMicrodepositsOptions.cs
index 62da6ae93a..f9a033b8d2 100644
--- a/src/Stripe.net/Services/PaymentIntents/PaymentIntentVerifyMicrodepositsOptions.cs
+++ b/src/Stripe.net/Services/PaymentIntents/PaymentIntentVerifyMicrodepositsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentIntentVerifyMicrodepositsOptions : BaseOptions
     {
@@ -11,6 +14,9 @@ public class PaymentIntentVerifyMicrodepositsOptions : BaseOptions
         /// to the bank account.
         /// </summary>
         [JsonProperty("amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amounts")]
+#endif
         public List<long?> Amounts { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class PaymentIntentVerifyMicrodepositsOptions : BaseOptions
         /// account.
         /// </summary>
         [JsonProperty("descriptor_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("descriptor_code")]
+#endif
         public string DescriptorCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinkLineItems/PaymentLinkLineItemService.cs b/src/Stripe.net/Services/PaymentLinkLineItems/PaymentLinkLineItemService.cs
index 020766b399..010c7ae84c 100644
--- a/src/Stripe.net/Services/PaymentLinkLineItems/PaymentLinkLineItemService.cs
+++ b/src/Stripe.net/Services/PaymentLinkLineItems/PaymentLinkLineItemService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class PaymentLinkLineItemService : ServiceNested<LineItem>,
+    public class PaymentLinkLineItemService : Service,
         INestedListable<LineItem, PaymentLinkLineItemListOptions>
     {
         public PaymentLinkLineItemService()
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkAfterCompletionHostedConfirmationOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkAfterCompletionHostedConfirmationOptions.cs
index 1c760bc2ba..c74b24f9db 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkAfterCompletionHostedConfirmationOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkAfterCompletionHostedConfirmationOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkAfterCompletionHostedConfirmationOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentLinkAfterCompletionHostedConfirmationOptions : INestedOption
         /// A custom message to display to the customer after the purchase is complete.
         /// </summary>
         [JsonProperty("custom_message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_message")]
+#endif
         public string CustomMessage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkAfterCompletionOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkAfterCompletionOptions.cs
index cd828a082e..a3d8952002 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkAfterCompletionOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkAfterCompletionOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkAfterCompletionOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class PaymentLinkAfterCompletionOptions : INestedOptions
         /// Configuration when <c>type=hosted_confirmation</c>.
         /// </summary>
         [JsonProperty("hosted_confirmation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hosted_confirmation")]
+#endif
         public PaymentLinkAfterCompletionHostedConfirmationOptions HostedConfirmation { get; set; }
 
         /// <summary>
         /// Configuration when <c>type=redirect</c>.
         /// </summary>
         [JsonProperty("redirect")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("redirect")]
+#endif
         public PaymentLinkAfterCompletionRedirectOptions Redirect { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class PaymentLinkAfterCompletionOptions : INestedOptions
         /// One of: <c>hosted_confirmation</c>, or <c>redirect</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkAfterCompletionRedirectOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkAfterCompletionRedirectOptions.cs
index 937230cd1a..1af03a3beb 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkAfterCompletionRedirectOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkAfterCompletionRedirectOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkAfterCompletionRedirectOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class PaymentLinkAfterCompletionRedirectOptions : INestedOptions
         /// session</a> included.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkAutomaticTaxLiabilityOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkAutomaticTaxLiabilityOptions.cs
index 8312ba128c..3c055cb8f0 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkAutomaticTaxLiabilityOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkAutomaticTaxLiabilityOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkAutomaticTaxLiabilityOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentLinkAutomaticTaxLiabilityOptions : INestedOptions
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public string Account { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class PaymentLinkAutomaticTaxLiabilityOptions : INestedOptions
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkAutomaticTaxOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkAutomaticTaxOptions.cs
index b3958a3118..aa4ee9ecbb 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkAutomaticTaxOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkAutomaticTaxOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkAutomaticTaxOptions : INestedOptions
     {
@@ -13,6 +16,9 @@ public class PaymentLinkAutomaticTaxOptions : INestedOptions
         /// information necessary for tax calculation.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class PaymentLinkAutomaticTaxOptions : INestedOptions
         /// transaction is returned in the report of the connected account.
         /// </summary>
         [JsonProperty("liability")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("liability")]
+#endif
         public PaymentLinkAutomaticTaxLiabilityOptions Liability { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkConsentCollectionOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkConsentCollectionOptions.cs
index afe9d867a5..7a3c194953 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkConsentCollectionOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkConsentCollectionOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkConsentCollectionOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentLinkConsentCollectionOptions : INestedOptions
         /// <c>hidden</c>, it will hide legal text related to the reuse of a payment method.
         /// </summary>
         [JsonProperty("payment_method_reuse_agreement")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_reuse_agreement")]
+#endif
         public PaymentLinkConsentCollectionPaymentMethodReuseAgreementOptions PaymentMethodReuseAgreement { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class PaymentLinkConsentCollectionOptions : INestedOptions
         /// One of: <c>auto</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("promotions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotions")]
+#endif
         public string Promotions { get; set; }
 
         /// <summary>
@@ -29,6 +38,9 @@ public class PaymentLinkConsentCollectionOptions : INestedOptions
         /// One of: <c>none</c>, or <c>required</c>.
         /// </summary>
         [JsonProperty("terms_of_service")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("terms_of_service")]
+#endif
         public string TermsOfService { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkConsentCollectionPaymentMethodReuseAgreementOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkConsentCollectionPaymentMethodReuseAgreementOptions.cs
index f36a825572..028c2fc5bb 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkConsentCollectionPaymentMethodReuseAgreementOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkConsentCollectionPaymentMethodReuseAgreementOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkConsentCollectionPaymentMethodReuseAgreementOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class PaymentLinkConsentCollectionPaymentMethodReuseAgreementOptions : IN
         /// One of: <c>auto</c>, or <c>hidden</c>.
         /// </summary>
         [JsonProperty("position")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("position")]
+#endif
         public string Position { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkCreateOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkCreateOptions.cs
index 932f307051..c2302d4f50 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkCreateOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkCreateOptions : BaseOptions, IHasMetadata
     {
@@ -10,12 +13,18 @@ public class PaymentLinkCreateOptions : BaseOptions, IHasMetadata
         /// Behavior after the purchase is complete.
         /// </summary>
         [JsonProperty("after_completion")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("after_completion")]
+#endif
         public PaymentLinkAfterCompletionOptions AfterCompletion { get; set; }
 
         /// <summary>
         /// Enables user redeemable promotion codes.
         /// </summary>
         [JsonProperty("allow_promotion_codes")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allow_promotion_codes")]
+#endif
         public bool? AllowPromotionCodes { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class PaymentLinkCreateOptions : BaseOptions, IHasMetadata
         /// when there are no line items with recurring prices.
         /// </summary>
         [JsonProperty("application_fee_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_amount")]
+#endif
         public long? ApplicationFeeAmount { get; set; }
 
         /// <summary>
@@ -33,12 +45,18 @@ public class PaymentLinkCreateOptions : BaseOptions, IHasMetadata
         /// recurring price to use this field.
         /// </summary>
         [JsonProperty("application_fee_percent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_percent")]
+#endif
         public decimal? ApplicationFeePercent { get; set; }
 
         /// <summary>
         /// Configuration for automatic tax collection.
         /// </summary>
         [JsonProperty("automatic_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatic_tax")]
+#endif
         public PaymentLinkAutomaticTaxOptions AutomaticTax { get; set; }
 
         /// <summary>
@@ -46,12 +64,18 @@ public class PaymentLinkCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>auto</c>, or <c>required</c>.
         /// </summary>
         [JsonProperty("billing_address_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_address_collection")]
+#endif
         public string BillingAddressCollection { get; set; }
 
         /// <summary>
         /// Configure fields to gather active consent from customers.
         /// </summary>
         [JsonProperty("consent_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("consent_collection")]
+#endif
         public PaymentLinkConsentCollectionOptions ConsentCollection { get; set; }
 
         /// <summary>
@@ -60,6 +84,9 @@ public class PaymentLinkCreateOptions : BaseOptions, IHasMetadata
         /// currency</a> and supported by each line item's price.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -67,12 +94,18 @@ public class PaymentLinkCreateOptions : BaseOptions, IHasMetadata
         /// are supported.
         /// </summary>
         [JsonProperty("custom_fields")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_fields")]
+#endif
         public List<PaymentLinkCustomFieldOptions> CustomFields { get; set; }
 
         /// <summary>
         /// Display additional text for your customers using custom text.
         /// </summary>
         [JsonProperty("custom_text")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_text")]
+#endif
         public PaymentLinkCustomTextOptions CustomText { get; set; }
 
         /// <summary>
@@ -82,6 +115,9 @@ public class PaymentLinkCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>always</c>, or <c>if_required</c>.
         /// </summary>
         [JsonProperty("customer_creation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_creation")]
+#endif
         public string CustomerCreation { get; set; }
 
         /// <summary>
@@ -89,12 +125,18 @@ public class PaymentLinkCreateOptions : BaseOptions, IHasMetadata
         /// active.
         /// </summary>
         [JsonProperty("inactive_message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("inactive_message")]
+#endif
         public string InactiveMessage { get; set; }
 
         /// <summary>
         /// Generate a post-purchase Invoice for one-time payments.
         /// </summary>
         [JsonProperty("invoice_creation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_creation")]
+#endif
         public PaymentLinkInvoiceCreationOptions InvoiceCreation { get; set; }
 
         /// <summary>
@@ -102,6 +144,9 @@ public class PaymentLinkCreateOptions : BaseOptions, IHasMetadata
         /// sold. Up to 20 line items are supported.
         /// </summary>
         [JsonProperty("line_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line_items")]
+#endif
         public List<PaymentLinkLineItemOptions> LineItems { get; set; }
 
         /// <summary>
@@ -114,12 +159,18 @@ public class PaymentLinkCreateOptions : BaseOptions, IHasMetadata
         /// this payment link.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The account on behalf of which to charge.
         /// </summary>
         [JsonProperty("on_behalf_of")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+#endif
         public string OnBehalfOf { get; set; }
 
         /// <summary>
@@ -127,6 +178,9 @@ public class PaymentLinkCreateOptions : BaseOptions, IHasMetadata
         /// <c>payment</c> mode.
         /// </summary>
         [JsonProperty("payment_intent_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_intent_data")]
+#endif
         public PaymentLinkPaymentIntentDataOptions PaymentIntentData { get; set; }
 
         /// <summary>
@@ -143,6 +197,9 @@ public class PaymentLinkCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>always</c>, or <c>if_required</c>.
         /// </summary>
         [JsonProperty("payment_method_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_collection")]
+#endif
         public string PaymentMethodCollection { get; set; }
 
         /// <summary>
@@ -160,6 +217,9 @@ public class PaymentLinkCreateOptions : BaseOptions, IHasMetadata
         /// <c>swish</c>, <c>twint</c>, <c>us_bank_account</c>, <c>wechat_pay</c>, or <c>zip</c>.
         /// </summary>
         [JsonProperty("payment_method_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_types")]
+#endif
         public List<string> PaymentMethodTypes { get; set; }
 
         /// <summary>
@@ -168,18 +228,27 @@ public class PaymentLinkCreateOptions : BaseOptions, IHasMetadata
         /// We recommend that you review your privacy policy and check with your legal contacts.
         /// </summary>
         [JsonProperty("phone_number_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone_number_collection")]
+#endif
         public PaymentLinkPhoneNumberCollectionOptions PhoneNumberCollection { get; set; }
 
         /// <summary>
         /// Settings that restrict the usage of a payment link.
         /// </summary>
         [JsonProperty("restrictions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("restrictions")]
+#endif
         public PaymentLinkRestrictionsOptions Restrictions { get; set; }
 
         /// <summary>
         /// Configuration for collecting the customer's shipping address.
         /// </summary>
         [JsonProperty("shipping_address_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_address_collection")]
+#endif
         public PaymentLinkShippingAddressCollectionOptions ShippingAddressCollection { get; set; }
 
         /// <summary>
@@ -188,6 +257,9 @@ public class PaymentLinkCreateOptions : BaseOptions, IHasMetadata
         /// this payment link.
         /// </summary>
         [JsonProperty("shipping_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_options")]
+#endif
         public List<PaymentLinkShippingOptionOptions> ShippingOptions { get; set; }
 
         /// <summary>
@@ -199,6 +271,9 @@ public class PaymentLinkCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>auto</c>, <c>book</c>, <c>donate</c>, <c>pay</c>, or <c>subscribe</c>.
         /// </summary>
         [JsonProperty("submit_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("submit_type")]
+#endif
         public string SubmitType { get; set; }
 
         /// <summary>
@@ -206,12 +281,18 @@ public class PaymentLinkCreateOptions : BaseOptions, IHasMetadata
         /// be at least one line item with a recurring price to use <c>subscription_data</c>.
         /// </summary>
         [JsonProperty("subscription_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_data")]
+#endif
         public PaymentLinkSubscriptionDataOptions SubscriptionData { get; set; }
 
         /// <summary>
         /// Controls tax ID collection during checkout.
         /// </summary>
         [JsonProperty("tax_id_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_id_collection")]
+#endif
         public PaymentLinkTaxIdCollectionOptions TaxIdCollection { get; set; }
 
         /// <summary>
@@ -219,6 +300,9 @@ public class PaymentLinkCreateOptions : BaseOptions, IHasMetadata
         /// funds from each payment will be transferred to.
         /// </summary>
         [JsonProperty("transfer_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_data")]
+#endif
         public PaymentLinkTransferDataOptions TransferData { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomFieldDropdownOptionOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomFieldDropdownOptionOptions.cs
index 8af245b6d2..f5064a82e8 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomFieldDropdownOptionOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomFieldDropdownOptionOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkCustomFieldDropdownOptionOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentLinkCustomFieldDropdownOptionOptions : INestedOptions
         /// The label for the option, displayed to the customer. Up to 100 characters.
         /// </summary>
         [JsonProperty("label")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("label")]
+#endif
         public string Label { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PaymentLinkCustomFieldDropdownOptionOptions : INestedOptions
         /// alphanumeric, and up to 100 characters.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomFieldDropdownOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomFieldDropdownOptions.cs
index a717ae6681..6275981143 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomFieldDropdownOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomFieldDropdownOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkCustomFieldDropdownOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentLinkCustomFieldDropdownOptions : INestedOptions
         /// The options available for the customer to select. Up to 200 options allowed.
         /// </summary>
         [JsonProperty("options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("options")]
+#endif
         public List<PaymentLinkCustomFieldDropdownOptionOptions> Options { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomFieldLabelOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomFieldLabelOptions.cs
index 0e3821048f..7bb0020583 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomFieldLabelOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomFieldLabelOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkCustomFieldLabelOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class PaymentLinkCustomFieldLabelOptions : INestedOptions
         /// Custom text for the label, displayed to the customer. Up to 50 characters.
         /// </summary>
         [JsonProperty("custom")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom")]
+#endif
         public string Custom { get; set; }
 
         /// <summary>
         /// The type of the label.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomFieldNumericOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomFieldNumericOptions.cs
index 59cb2c582a..b7d5b30fb3 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomFieldNumericOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomFieldNumericOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkCustomFieldNumericOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class PaymentLinkCustomFieldNumericOptions : INestedOptions
         /// The maximum character length constraint for the customer's input.
         /// </summary>
         [JsonProperty("maximum_length")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("maximum_length")]
+#endif
         public long? MaximumLength { get; set; }
 
         /// <summary>
         /// The minimum character length requirement for the customer's input.
         /// </summary>
         [JsonProperty("minimum_length")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("minimum_length")]
+#endif
         public long? MinimumLength { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomFieldOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomFieldOptions.cs
index 0ed12340f7..da20aa5b72 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomFieldOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomFieldOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkCustomFieldOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentLinkCustomFieldOptions : INestedOptions
         /// Configuration for <c>type=dropdown</c> fields.
         /// </summary>
         [JsonProperty("dropdown")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dropdown")]
+#endif
         public PaymentLinkCustomFieldDropdownOptions Dropdown { get; set; }
 
         /// <summary>
@@ -16,18 +22,27 @@ public class PaymentLinkCustomFieldOptions : INestedOptions
         /// unique to this field, alphanumeric, and up to 200 characters.
         /// </summary>
         [JsonProperty("key")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("key")]
+#endif
         public string Key { get; set; }
 
         /// <summary>
         /// The label for the field, displayed to the customer.
         /// </summary>
         [JsonProperty("label")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("label")]
+#endif
         public PaymentLinkCustomFieldLabelOptions Label { get; set; }
 
         /// <summary>
         /// Configuration for <c>type=numeric</c> fields.
         /// </summary>
         [JsonProperty("numeric")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("numeric")]
+#endif
         public PaymentLinkCustomFieldNumericOptions Numeric { get; set; }
 
         /// <summary>
@@ -35,12 +50,18 @@ public class PaymentLinkCustomFieldOptions : INestedOptions
         /// Session. Defaults to <c>false</c>.
         /// </summary>
         [JsonProperty("optional")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("optional")]
+#endif
         public bool? Optional { get; set; }
 
         /// <summary>
         /// Configuration for <c>type=text</c> fields.
         /// </summary>
         [JsonProperty("text")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("text")]
+#endif
         public PaymentLinkCustomFieldTextOptions Text { get; set; }
 
         /// <summary>
@@ -48,6 +69,9 @@ public class PaymentLinkCustomFieldOptions : INestedOptions
         /// One of: <c>dropdown</c>, <c>numeric</c>, or <c>text</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomFieldTextOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomFieldTextOptions.cs
index b9e6455c66..7bd0bebd7f 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomFieldTextOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomFieldTextOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkCustomFieldTextOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class PaymentLinkCustomFieldTextOptions : INestedOptions
         /// The maximum character length constraint for the customer's input.
         /// </summary>
         [JsonProperty("maximum_length")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("maximum_length")]
+#endif
         public long? MaximumLength { get; set; }
 
         /// <summary>
         /// The minimum character length requirement for the customer's input.
         /// </summary>
         [JsonProperty("minimum_length")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("minimum_length")]
+#endif
         public long? MinimumLength { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomTextAfterSubmitOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomTextAfterSubmitOptions.cs
index 4be18d2266..51f46d5677 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomTextAfterSubmitOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomTextAfterSubmitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkCustomTextAfterSubmitOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentLinkCustomTextAfterSubmitOptions : INestedOptions
         /// Text may be up to 1200 characters in length.
         /// </summary>
         [JsonProperty("message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("message")]
+#endif
         public string Message { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomTextOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomTextOptions.cs
index e6b110e3cd..2608e21417 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomTextOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomTextOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkCustomTextOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class PaymentLinkCustomTextOptions : INestedOptions
         /// Custom text that should be displayed after the payment confirmation button.
         /// </summary>
         [JsonProperty("after_submit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("after_submit")]
+#endif
         public PaymentLinkCustomTextAfterSubmitOptions AfterSubmit { get; set; }
 
         /// <summary>
         /// Custom text that should be displayed alongside shipping address collection.
         /// </summary>
         [JsonProperty("shipping_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_address")]
+#endif
         public PaymentLinkCustomTextShippingAddressOptions ShippingAddress { get; set; }
 
         /// <summary>
         /// Custom text that should be displayed alongside the payment confirmation button.
         /// </summary>
         [JsonProperty("submit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("submit")]
+#endif
         public PaymentLinkCustomTextSubmitOptions Submit { get; set; }
 
         /// <summary>
@@ -28,6 +40,9 @@ public class PaymentLinkCustomTextOptions : INestedOptions
         /// text.
         /// </summary>
         [JsonProperty("terms_of_service_acceptance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("terms_of_service_acceptance")]
+#endif
         public PaymentLinkCustomTextTermsOfServiceAcceptanceOptions TermsOfServiceAcceptance { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomTextShippingAddressOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomTextShippingAddressOptions.cs
index 7b6afbb9e0..d90f30095f 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomTextShippingAddressOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomTextShippingAddressOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkCustomTextShippingAddressOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentLinkCustomTextShippingAddressOptions : INestedOptions
         /// Text may be up to 1200 characters in length.
         /// </summary>
         [JsonProperty("message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("message")]
+#endif
         public string Message { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomTextSubmitOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomTextSubmitOptions.cs
index 44730486b7..cd3a0e38ea 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomTextSubmitOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomTextSubmitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkCustomTextSubmitOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentLinkCustomTextSubmitOptions : INestedOptions
         /// Text may be up to 1200 characters in length.
         /// </summary>
         [JsonProperty("message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("message")]
+#endif
         public string Message { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomTextTermsOfServiceAcceptanceOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomTextTermsOfServiceAcceptanceOptions.cs
index 3efc6ccf79..9b1fd94bf0 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomTextTermsOfServiceAcceptanceOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkCustomTextTermsOfServiceAcceptanceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkCustomTextTermsOfServiceAcceptanceOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentLinkCustomTextTermsOfServiceAcceptanceOptions : INestedOptio
         /// Text may be up to 1200 characters in length.
         /// </summary>
         [JsonProperty("message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("message")]
+#endif
         public string Message { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkInvoiceCreationInvoiceDataCustomFieldOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkInvoiceCreationInvoiceDataCustomFieldOptions.cs
index 7039f84fe6..63acefbd89 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkInvoiceCreationInvoiceDataCustomFieldOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkInvoiceCreationInvoiceDataCustomFieldOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkInvoiceCreationInvoiceDataCustomFieldOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class PaymentLinkInvoiceCreationInvoiceDataCustomFieldOptions : INestedOp
         /// The name of the custom field. This may be up to 40 characters.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// The value of the custom field. This may be up to 140 characters.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkInvoiceCreationInvoiceDataIssuerOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkInvoiceCreationInvoiceDataIssuerOptions.cs
index 96e14dc50f..5afeb03d14 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkInvoiceCreationInvoiceDataIssuerOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkInvoiceCreationInvoiceDataIssuerOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkInvoiceCreationInvoiceDataIssuerOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentLinkInvoiceCreationInvoiceDataIssuerOptions : INestedOptions
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public string Account { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class PaymentLinkInvoiceCreationInvoiceDataIssuerOptions : INestedOptions
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkInvoiceCreationInvoiceDataOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkInvoiceCreationInvoiceDataOptions.cs
index fde2918ab8..073ec417d2 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkInvoiceCreationInvoiceDataOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkInvoiceCreationInvoiceDataOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkInvoiceCreationInvoiceDataOptions : INestedOptions, IHasMetadata
     {
@@ -10,24 +13,36 @@ public class PaymentLinkInvoiceCreationInvoiceDataOptions : INestedOptions, IHas
         /// The account tax IDs associated with the invoice.
         /// </summary>
         [JsonProperty("account_tax_ids")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_tax_ids")]
+#endif
         public List<string> AccountTaxIds { get; set; }
 
         /// <summary>
         /// Default custom fields to be displayed on invoices for this customer.
         /// </summary>
         [JsonProperty("custom_fields")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_fields")]
+#endif
         public List<PaymentLinkInvoiceCreationInvoiceDataCustomFieldOptions> CustomFields { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// Default footer to be displayed on invoices for this customer.
         /// </summary>
         [JsonProperty("footer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("footer")]
+#endif
         public string Footer { get; set; }
 
         /// <summary>
@@ -35,6 +50,9 @@ public class PaymentLinkInvoiceCreationInvoiceDataOptions : INestedOptions, IHas
         /// branding and support information of the specified account.
         /// </summary>
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public PaymentLinkInvoiceCreationInvoiceDataIssuerOptions Issuer { get; set; }
 
         /// <summary>
@@ -44,12 +62,18 @@ public class PaymentLinkInvoiceCreationInvoiceDataOptions : INestedOptions, IHas
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Default options for invoice PDF rendering for this customer.
         /// </summary>
         [JsonProperty("rendering_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("rendering_options")]
+#endif
         public PaymentLinkInvoiceCreationInvoiceDataRenderingOptionsOptions RenderingOptions { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkInvoiceCreationInvoiceDataRenderingOptionsOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkInvoiceCreationInvoiceDataRenderingOptionsOptions.cs
index d78ca9b759..f5fda0884f 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkInvoiceCreationInvoiceDataRenderingOptionsOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkInvoiceCreationInvoiceDataRenderingOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkInvoiceCreationInvoiceDataRenderingOptionsOptions : INestedOptions
     {
@@ -14,6 +17,9 @@ public class PaymentLinkInvoiceCreationInvoiceDataRenderingOptionsOptions : INes
         /// One of: <c>exclude_tax</c>, or <c>include_inclusive_tax</c>.
         /// </summary>
         [JsonProperty("amount_tax_display")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_tax_display")]
+#endif
         public string AmountTaxDisplay { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkInvoiceCreationOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkInvoiceCreationOptions.cs
index 66c926b4a0..279efb02a0 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkInvoiceCreationOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkInvoiceCreationOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkInvoiceCreationOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class PaymentLinkInvoiceCreationOptions : INestedOptions
         /// Whether the feature is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
         /// Invoice PDF configuration.
         /// </summary>
         [JsonProperty("invoice_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_data")]
+#endif
         public PaymentLinkInvoiceCreationInvoiceDataOptions InvoiceData { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkLineItemAdjustableQuantityOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkLineItemAdjustableQuantityOptions.cs
index 7b4baae301..b3d17c4200 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkLineItemAdjustableQuantityOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkLineItemAdjustableQuantityOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkLineItemAdjustableQuantityOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentLinkLineItemAdjustableQuantityOptions : INestedOptions
         /// Set to true if the quantity can be adjusted to any non-negative Integer.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class PaymentLinkLineItemAdjustableQuantityOptions : INestedOptions
         /// specify a value up to 999.
         /// </summary>
         [JsonProperty("maximum")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("maximum")]
+#endif
         public long? Maximum { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class PaymentLinkLineItemAdjustableQuantityOptions : INestedOptions
         /// only one item in the cart then that item's quantity cannot go down to 0.
         /// </summary>
         [JsonProperty("minimum")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("minimum")]
+#endif
         public long? Minimum { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkLineItemOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkLineItemOptions.cs
index e62af82b00..eb658e1791 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkLineItemOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkLineItemOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkLineItemOptions : INestedOptions, IHasId
     {
@@ -10,12 +13,18 @@ public class PaymentLinkLineItemOptions : INestedOptions, IHasId
         /// during checkout.
         /// </summary>
         [JsonProperty("adjustable_quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("adjustable_quantity")]
+#endif
         public PaymentLinkLineItemAdjustableQuantityOptions AdjustableQuantity { get; set; }
 
         /// <summary>
         /// The ID of an existing line item on the payment link.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
@@ -23,12 +32,18 @@ public class PaymentLinkLineItemOptions : INestedOptions, IHasId
         /// href="https://stripe.com/docs/api/plans">Plan</a> object.
         /// </summary>
         [JsonProperty("price")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price")]
+#endif
         public string Price { get; set; }
 
         /// <summary>
         /// The quantity of the line item being purchased.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkListOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkListOptions.cs
index 38927f8c95..510754af63 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkListOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkListOptions : ListOptions
     {
@@ -10,6 +13,9 @@ public class PaymentLinkListOptions : ListOptions
         /// all inactive payment links).
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool? Active { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkPaymentIntentDataOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkPaymentIntentDataOptions.cs
index ae2bf0bcbb..46dd7374b1 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkPaymentIntentDataOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkPaymentIntentDataOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkPaymentIntentDataOptions : INestedOptions, IHasMetadata
     {
@@ -11,12 +14,18 @@ public class PaymentLinkPaymentIntentDataOptions : INestedOptions, IHasMetadata
         /// One of: <c>automatic</c>, <c>automatic_async</c>, or <c>manual</c>.
         /// </summary>
         [JsonProperty("capture_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_method")]
+#endif
         public string CaptureMethod { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class PaymentLinkPaymentIntentDataOptions : INestedOptions, IHasMetadata
         /// clear prior values.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -53,6 +65,9 @@ public class PaymentLinkPaymentIntentDataOptions : INestedOptions, IHasMetadata
         /// One of: <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
@@ -67,6 +82,9 @@ public class PaymentLinkPaymentIntentDataOptions : INestedOptions, IHasMetadata
         /// instead.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
 
         /// <summary>
@@ -76,6 +94,9 @@ public class PaymentLinkPaymentIntentDataOptions : INestedOptions, IHasMetadata
         /// customer's statement.
         /// </summary>
         [JsonProperty("statement_descriptor_suffix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor_suffix")]
+#endif
         public string StatementDescriptorSuffix { get; set; }
 
         /// <summary>
@@ -85,6 +106,9 @@ public class PaymentLinkPaymentIntentDataOptions : INestedOptions, IHasMetadata
         /// connected accounts</a> for details.
         /// </summary>
         [JsonProperty("transfer_group")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_group")]
+#endif
         public string TransferGroup { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkPhoneNumberCollectionOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkPhoneNumberCollectionOptions.cs
index d1ece1763b..7f13a2e718 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkPhoneNumberCollectionOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkPhoneNumberCollectionOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkPhoneNumberCollectionOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentLinkPhoneNumberCollectionOptions : INestedOptions
         /// Set to <c>true</c> to enable phone number collection.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkRestrictionsCompletedSessionsOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkRestrictionsCompletedSessionsOptions.cs
index 64943d2683..324599989a 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkRestrictionsCompletedSessionsOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkRestrictionsCompletedSessionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkRestrictionsCompletedSessionsOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentLinkRestrictionsCompletedSessionsOptions : INestedOptions
         /// <c>completed_sessions</c> restriction to be met.
         /// </summary>
         [JsonProperty("limit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("limit")]
+#endif
         public long? Limit { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkRestrictionsOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkRestrictionsOptions.cs
index 598ea49b60..4e63b82bed 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkRestrictionsOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkRestrictionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkRestrictionsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentLinkRestrictionsOptions : INestedOptions
         /// Configuration for the <c>completed_sessions</c> restriction type.
         /// </summary>
         [JsonProperty("completed_sessions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("completed_sessions")]
+#endif
         public PaymentLinkRestrictionsCompletedSessionsOptions CompletedSessions { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkService.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkService.cs
index c0ef8099ea..a84d73c777 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkService.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public partial class PaymentLinkService : Service<PaymentLink>,
+    public partial class PaymentLinkService : Service,
         ICreatable<PaymentLink, PaymentLinkCreateOptions>,
         IListable<PaymentLink, PaymentLinkListOptions>,
         IRetrievable<PaymentLink, PaymentLinkGetOptions>,
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkShippingAddressCollectionOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkShippingAddressCollectionOptions.cs
index 62e3f61bd8..9e918825fe 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkShippingAddressCollectionOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkShippingAddressCollectionOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkShippingAddressCollectionOptions : INestedOptions
     {
@@ -41,6 +44,9 @@ public class PaymentLinkShippingAddressCollectionOptions : INestedOptions
         /// <c>XK</c>, <c>YE</c>, <c>YT</c>, <c>ZA</c>, <c>ZM</c>, <c>ZW</c>, or <c>ZZ</c>.
         /// </summary>
         [JsonProperty("allowed_countries")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allowed_countries")]
+#endif
         public List<string> AllowedCountries { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkShippingOptionOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkShippingOptionOptions.cs
index 549cad3763..b38fdbfdda 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkShippingOptionOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkShippingOptionOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkShippingOptionOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentLinkShippingOptionOptions : INestedOptions
         /// The ID of the Shipping Rate to use for this shipping option.
         /// </summary>
         [JsonProperty("shipping_rate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_rate")]
+#endif
         public string ShippingRate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkSubscriptionDataInvoiceSettingsIssuerOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkSubscriptionDataInvoiceSettingsIssuerOptions.cs
index 75f3732a2e..0c20bef73d 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkSubscriptionDataInvoiceSettingsIssuerOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkSubscriptionDataInvoiceSettingsIssuerOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkSubscriptionDataInvoiceSettingsIssuerOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentLinkSubscriptionDataInvoiceSettingsIssuerOptions : INestedOp
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public string Account { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class PaymentLinkSubscriptionDataInvoiceSettingsIssuerOptions : INestedOp
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkSubscriptionDataInvoiceSettingsOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkSubscriptionDataInvoiceSettingsOptions.cs
index 07d06308c1..0549e4fa00 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkSubscriptionDataInvoiceSettingsOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkSubscriptionDataInvoiceSettingsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkSubscriptionDataInvoiceSettingsOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentLinkSubscriptionDataInvoiceSettingsOptions : INestedOptions
         /// branding and support information of the specified account.
         /// </summary>
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public PaymentLinkSubscriptionDataInvoiceSettingsIssuerOptions Issuer { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkSubscriptionDataOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkSubscriptionDataOptions.cs
index 0997aa8ad7..44f551d4d7 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkSubscriptionDataOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkSubscriptionDataOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkSubscriptionDataOptions : INestedOptions, IHasMetadata
     {
@@ -12,12 +15,18 @@ public class PaymentLinkSubscriptionDataOptions : INestedOptions, IHasMetadata
         /// and certain local payment methods UIs.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// All invoices will be billed using the specified settings.
         /// </summary>
         [JsonProperty("invoice_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_settings")]
+#endif
         public PaymentLinkSubscriptionDataInvoiceSettingsOptions InvoiceSettings { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class PaymentLinkSubscriptionDataOptions : INestedOptions, IHasMetadata
         /// clear prior values.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -35,12 +47,18 @@ public class PaymentLinkSubscriptionDataOptions : INestedOptions, IHasMetadata
         /// the first time. Has to be at least 1.
         /// </summary>
         [JsonProperty("trial_period_days")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_period_days")]
+#endif
         public long? TrialPeriodDays { get; set; }
 
         /// <summary>
         /// Settings related to subscription trials.
         /// </summary>
         [JsonProperty("trial_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_settings")]
+#endif
         public PaymentLinkSubscriptionDataTrialSettingsOptions TrialSettings { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkSubscriptionDataTrialSettingsEndBehaviorOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkSubscriptionDataTrialSettingsEndBehaviorOptions.cs
index 117bd42664..44b5d70fc1 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkSubscriptionDataTrialSettingsEndBehaviorOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkSubscriptionDataTrialSettingsEndBehaviorOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkSubscriptionDataTrialSettingsEndBehaviorOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class PaymentLinkSubscriptionDataTrialSettingsEndBehaviorOptions : INeste
         /// One of: <c>cancel</c>, <c>create_invoice</c>, or <c>pause</c>.
         /// </summary>
         [JsonProperty("missing_payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("missing_payment_method")]
+#endif
         public string MissingPaymentMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkSubscriptionDataTrialSettingsOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkSubscriptionDataTrialSettingsOptions.cs
index 71973782a6..9626f54f21 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkSubscriptionDataTrialSettingsOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkSubscriptionDataTrialSettingsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkSubscriptionDataTrialSettingsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentLinkSubscriptionDataTrialSettingsOptions : INestedOptions
         /// Defines how the subscription should behave when the user's free trial ends.
         /// </summary>
         [JsonProperty("end_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end_behavior")]
+#endif
         public PaymentLinkSubscriptionDataTrialSettingsEndBehaviorOptions EndBehavior { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkTaxIdCollectionOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkTaxIdCollectionOptions.cs
index 4ba4061efc..170218d5f3 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkTaxIdCollectionOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkTaxIdCollectionOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkTaxIdCollectionOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentLinkTaxIdCollectionOptions : INestedOptions
         /// Enable tax ID collection during checkout. Defaults to <c>false</c>.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class PaymentLinkTaxIdCollectionOptions : INestedOptions
         /// One of: <c>if_supported</c>, or <c>never</c>.
         /// </summary>
         [JsonProperty("required")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("required")]
+#endif
         public string Required { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkTransferDataOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkTransferDataOptions.cs
index bc9ba8aa82..c368b502d3 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkTransferDataOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkTransferDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkTransferDataOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentLinkTransferDataOptions : INestedOptions
         /// The amount that will be transferred automatically when a charge succeeds.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class PaymentLinkTransferDataOptions : INestedOptions
         /// <c>transfer</c> field.
         /// </summary>
         [JsonProperty("destination")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination")]
+#endif
         public string Destination { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentLinks/PaymentLinkUpdateOptions.cs b/src/Stripe.net/Services/PaymentLinks/PaymentLinkUpdateOptions.cs
index 457aaf21e2..82ace2cc6b 100644
--- a/src/Stripe.net/Services/PaymentLinks/PaymentLinkUpdateOptions.cs
+++ b/src/Stripe.net/Services/PaymentLinks/PaymentLinkUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentLinkUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -11,24 +14,36 @@ public class PaymentLinkUpdateOptions : BaseOptions, IHasMetadata
         /// URL will be shown a page saying that the link has been deactivated.
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool? Active { get; set; }
 
         /// <summary>
         /// Behavior after the purchase is complete.
         /// </summary>
         [JsonProperty("after_completion")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("after_completion")]
+#endif
         public PaymentLinkAfterCompletionOptions AfterCompletion { get; set; }
 
         /// <summary>
         /// Enables user redeemable promotion codes.
         /// </summary>
         [JsonProperty("allow_promotion_codes")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allow_promotion_codes")]
+#endif
         public bool? AllowPromotionCodes { get; set; }
 
         /// <summary>
         /// Configuration for automatic tax collection.
         /// </summary>
         [JsonProperty("automatic_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatic_tax")]
+#endif
         public PaymentLinkAutomaticTaxOptions AutomaticTax { get; set; }
 
         /// <summary>
@@ -36,6 +51,9 @@ public class PaymentLinkUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>auto</c>, or <c>required</c>.
         /// </summary>
         [JsonProperty("billing_address_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_address_collection")]
+#endif
         public string BillingAddressCollection { get; set; }
 
         /// <summary>
@@ -43,12 +61,18 @@ public class PaymentLinkUpdateOptions : BaseOptions, IHasMetadata
         /// are supported.
         /// </summary>
         [JsonProperty("custom_fields")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_fields")]
+#endif
         public List<PaymentLinkCustomFieldOptions> CustomFields { get; set; }
 
         /// <summary>
         /// Display additional text for your customers using custom text.
         /// </summary>
         [JsonProperty("custom_text")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_text")]
+#endif
         public PaymentLinkCustomTextOptions CustomText { get; set; }
 
         /// <summary>
@@ -58,6 +82,9 @@ public class PaymentLinkUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>always</c>, or <c>if_required</c>.
         /// </summary>
         [JsonProperty("customer_creation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_creation")]
+#endif
         public string CustomerCreation { get; set; }
 
         /// <summary>
@@ -65,12 +92,18 @@ public class PaymentLinkUpdateOptions : BaseOptions, IHasMetadata
         /// active.
         /// </summary>
         [JsonProperty("inactive_message")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("inactive_message")]
+#endif
         public string InactiveMessage { get; set; }
 
         /// <summary>
         /// Generate a post-purchase Invoice for one-time payments.
         /// </summary>
         [JsonProperty("invoice_creation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_creation")]
+#endif
         public PaymentLinkInvoiceCreationOptions InvoiceCreation { get; set; }
 
         /// <summary>
@@ -78,6 +111,9 @@ public class PaymentLinkUpdateOptions : BaseOptions, IHasMetadata
         /// sold. Up to 20 line items are supported.
         /// </summary>
         [JsonProperty("line_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line_items")]
+#endif
         public List<PaymentLinkLineItemOptions> LineItems { get; set; }
 
         /// <summary>
@@ -90,6 +126,9 @@ public class PaymentLinkUpdateOptions : BaseOptions, IHasMetadata
         /// this payment link.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -97,6 +136,9 @@ public class PaymentLinkUpdateOptions : BaseOptions, IHasMetadata
         /// <c>payment</c> mode.
         /// </summary>
         [JsonProperty("payment_intent_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_intent_data")]
+#endif
         public PaymentLinkPaymentIntentDataOptions PaymentIntentData { get; set; }
 
         /// <summary>
@@ -113,6 +155,9 @@ public class PaymentLinkUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>always</c>, or <c>if_required</c>.
         /// </summary>
         [JsonProperty("payment_method_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_collection")]
+#endif
         public string PaymentMethodCollection { get; set; }
 
         /// <summary>
@@ -129,6 +174,9 @@ public class PaymentLinkUpdateOptions : BaseOptions, IHasMetadata
         /// <c>swish</c>, <c>twint</c>, <c>us_bank_account</c>, <c>wechat_pay</c>, or <c>zip</c>.
         /// </summary>
         [JsonProperty("payment_method_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_types")]
+#endif
         public List<string> PaymentMethodTypes { get; set; }
 
         /// <summary>
@@ -137,18 +185,27 @@ public class PaymentLinkUpdateOptions : BaseOptions, IHasMetadata
         /// We recommend that you review your privacy policy and check with your legal contacts.
         /// </summary>
         [JsonProperty("phone_number_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone_number_collection")]
+#endif
         public PaymentLinkPhoneNumberCollectionOptions PhoneNumberCollection { get; set; }
 
         /// <summary>
         /// Settings that restrict the usage of a payment link.
         /// </summary>
         [JsonProperty("restrictions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("restrictions")]
+#endif
         public PaymentLinkRestrictionsOptions Restrictions { get; set; }
 
         /// <summary>
         /// Configuration for collecting the customer's shipping address.
         /// </summary>
         [JsonProperty("shipping_address_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_address_collection")]
+#endif
         public PaymentLinkShippingAddressCollectionOptions ShippingAddressCollection { get; set; }
 
         /// <summary>
@@ -160,6 +217,9 @@ public class PaymentLinkUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>auto</c>, <c>book</c>, <c>donate</c>, <c>pay</c>, or <c>subscribe</c>.
         /// </summary>
         [JsonProperty("submit_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("submit_type")]
+#endif
         public string SubmitType { get; set; }
 
         /// <summary>
@@ -167,12 +227,18 @@ public class PaymentLinkUpdateOptions : BaseOptions, IHasMetadata
         /// be at least one line item with a recurring price to use <c>subscription_data</c>.
         /// </summary>
         [JsonProperty("subscription_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_data")]
+#endif
         public PaymentLinkSubscriptionDataOptions SubscriptionData { get; set; }
 
         /// <summary>
         /// Controls tax ID collection during checkout.
         /// </summary>
         [JsonProperty("tax_id_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_id_collection")]
+#endif
         public PaymentLinkTaxIdCollectionOptions TaxIdCollection { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAcssDebitDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAcssDebitDisplayPreferenceOptions.cs
index 1fae658347..dc33e5570c 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAcssDebitDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAcssDebitDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationAcssDebitDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationAcssDebitDisplayPreferenceOptions : INest
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAcssDebitOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAcssDebitOptions.cs
index 0026ea488e..9a7b848029 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAcssDebitOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAcssDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationAcssDebitOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationAcssDebitOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationAcssDebitDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAffirmDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAffirmDisplayPreferenceOptions.cs
index 16fec47041..a0fcd884f7 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAffirmDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAffirmDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationAffirmDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationAffirmDisplayPreferenceOptions : INestedO
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAffirmOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAffirmOptions.cs
index 332a749902..a85ce30898 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAffirmOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAffirmOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationAffirmOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationAffirmOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationAffirmDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAfterpayClearpayDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAfterpayClearpayDisplayPreferenceOptions.cs
index 9b2352c8c2..4a8ce7f062 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAfterpayClearpayDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAfterpayClearpayDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationAfterpayClearpayDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationAfterpayClearpayDisplayPreferenceOptions
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAfterpayClearpayOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAfterpayClearpayOptions.cs
index 39b0c52a88..644e10f4d0 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAfterpayClearpayOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAfterpayClearpayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationAfterpayClearpayOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationAfterpayClearpayOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationAfterpayClearpayDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAlipayDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAlipayDisplayPreferenceOptions.cs
index 8a9cbaa171..36abf40d5f 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAlipayDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAlipayDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationAlipayDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationAlipayDisplayPreferenceOptions : INestedO
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAlipayOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAlipayOptions.cs
index 1165e91be8..39f8b44d50 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAlipayOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAlipayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationAlipayOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationAlipayOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationAlipayDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAlmaDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAlmaDisplayPreferenceOptions.cs
index cd0046a7dc..498a65b172 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAlmaDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAlmaDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationAlmaDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationAlmaDisplayPreferenceOptions : INestedOpt
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAlmaOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAlmaOptions.cs
index 38d7422542..e3712d3f4b 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAlmaOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAlmaOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationAlmaOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationAlmaOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationAlmaDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAmazonPayDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAmazonPayDisplayPreferenceOptions.cs
index 54cbb19126..34e260d6f6 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAmazonPayDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAmazonPayDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationAmazonPayDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationAmazonPayDisplayPreferenceOptions : INest
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAmazonPayOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAmazonPayOptions.cs
index 7520ba9eae..14efbe94b6 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAmazonPayOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAmazonPayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationAmazonPayOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationAmazonPayOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationAmazonPayDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationApplePayDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationApplePayDisplayPreferenceOptions.cs
index 99a5f52c87..f024538e16 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationApplePayDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationApplePayDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationApplePayDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationApplePayDisplayPreferenceOptions : INeste
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationApplePayLaterDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationApplePayLaterDisplayPreferenceOptions.cs
index 4309ad1f89..ed8a28abf9 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationApplePayLaterDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationApplePayLaterDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationApplePayLaterDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationApplePayLaterDisplayPreferenceOptions : I
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationApplePayLaterOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationApplePayLaterOptions.cs
index ecbada69aa..5b4b9ca989 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationApplePayLaterOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationApplePayLaterOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationApplePayLaterOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationApplePayLaterOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationApplePayLaterDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationApplePayOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationApplePayOptions.cs
index 7bcfe569e7..f10b6f9913 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationApplePayOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationApplePayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationApplePayOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationApplePayOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationApplePayDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAuBecsDebitDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAuBecsDebitDisplayPreferenceOptions.cs
index 29f0be2e6f..234e5187e6 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAuBecsDebitDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAuBecsDebitDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationAuBecsDebitDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationAuBecsDebitDisplayPreferenceOptions : INe
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAuBecsDebitOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAuBecsDebitOptions.cs
index d4c9ecfe3d..3b7a45f842 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAuBecsDebitOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationAuBecsDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationAuBecsDebitOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationAuBecsDebitOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationAuBecsDebitDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBacsDebitDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBacsDebitDisplayPreferenceOptions.cs
index 317b4623f5..48db0b2c74 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBacsDebitDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBacsDebitDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationBacsDebitDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationBacsDebitDisplayPreferenceOptions : INest
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBacsDebitOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBacsDebitOptions.cs
index 4ce22a549d..961a8d7aea 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBacsDebitOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBacsDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationBacsDebitOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationBacsDebitOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationBacsDebitDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBancontactDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBancontactDisplayPreferenceOptions.cs
index 6083867e1d..8843047d81 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBancontactDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBancontactDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationBancontactDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationBancontactDisplayPreferenceOptions : INes
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBancontactOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBancontactOptions.cs
index 7512aca75f..5b0eb6e065 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBancontactOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBancontactOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationBancontactOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationBancontactOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationBancontactDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBlikDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBlikDisplayPreferenceOptions.cs
index 34b0859c78..fc23cfa2ab 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBlikDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBlikDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationBlikDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationBlikDisplayPreferenceOptions : INestedOpt
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBlikOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBlikOptions.cs
index 597b0cf3f0..170cfd71d5 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBlikOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBlikOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationBlikOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationBlikOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationBlikDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBoletoDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBoletoDisplayPreferenceOptions.cs
index 84c8ce840b..9911173a08 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBoletoDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBoletoDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationBoletoDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationBoletoDisplayPreferenceOptions : INestedO
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBoletoOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBoletoOptions.cs
index 40d9a1c797..297f980491 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBoletoOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationBoletoOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationBoletoOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationBoletoOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationBoletoDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCardDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCardDisplayPreferenceOptions.cs
index 92dc0ffd05..a9606a86da 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCardDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCardDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationCardDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationCardDisplayPreferenceOptions : INestedOpt
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCardOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCardOptions.cs
index 3df444baf0..29814c2338 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCardOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationCardOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationCardOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationCardDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCartesBancairesDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCartesBancairesDisplayPreferenceOptions.cs
index 3b43131940..2a22cd65c5 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCartesBancairesDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCartesBancairesDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationCartesBancairesDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationCartesBancairesDisplayPreferenceOptions :
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCartesBancairesOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCartesBancairesOptions.cs
index da06e17745..c678411ead 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCartesBancairesOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCartesBancairesOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationCartesBancairesOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationCartesBancairesOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationCartesBancairesDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCashappDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCashappDisplayPreferenceOptions.cs
index 70d90018a1..5f0bc084ba 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCashappDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCashappDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationCashappDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationCashappDisplayPreferenceOptions : INested
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCashappOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCashappOptions.cs
index 17740e1763..e201665243 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCashappOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCashappOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationCashappOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationCashappOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationCashappDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCreateOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCreateOptions.cs
index 24b6b9367b..85e75bbcf1 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCreateOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCreateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationCreateOptions : BaseOptions
     {
@@ -11,6 +14,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// country availability.
         /// </summary>
         [JsonProperty("acss_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acss_debit")]
+#endif
         public PaymentMethodConfigurationAcssDebitOptions AcssDebit { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// for more details like country availability.
         /// </summary>
         [JsonProperty("affirm")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("affirm")]
+#endif
         public PaymentMethodConfigurationAffirmOptions Affirm { get; set; }
 
         /// <summary>
@@ -30,6 +39,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// beauty, and sports products.
         /// </summary>
         [JsonProperty("afterpay_clearpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("afterpay_clearpay")]
+#endif
         public PaymentMethodConfigurationAfterpayClearpayOptions AfterpayClearpay { get; set; }
 
         /// <summary>
@@ -40,6 +52,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/alipay">page</a> for more details.
         /// </summary>
         [JsonProperty("alipay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alipay")]
+#endif
         public PaymentMethodConfigurationAlipayOptions Alipay { get; set; }
 
         /// <summary>
@@ -47,6 +62,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// 2, 3, or 4 installments.
         /// </summary>
         [JsonProperty("alma")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alma")]
+#endif
         public PaymentMethodConfigurationAlmaOptions Alma { get; set; }
 
         /// <summary>
@@ -54,6 +72,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// on Amazon.
         /// </summary>
         [JsonProperty("amazon_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amazon_pay")]
+#endif
         public PaymentMethodConfigurationAmazonPayOptions AmazonPay { get; set; }
 
         /// <summary>
@@ -64,6 +85,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// Check this <a href="https://stripe.com/docs/apple-pay">page</a> for more details.
         /// </summary>
         [JsonProperty("apple_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("apple_pay")]
+#endif
         public PaymentMethodConfigurationApplePayOptions ApplePay { get; set; }
 
         /// <summary>
@@ -71,6 +95,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// customers a way to split purchases into four installments across six weeks.
         /// </summary>
         [JsonProperty("apple_pay_later")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("apple_pay_later")]
+#endif
         public PaymentMethodConfigurationApplePayLaterOptions ApplePayLater { get; set; }
 
         /// <summary>
@@ -79,6 +106,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/au-becs-debit">page</a> for more details.
         /// </summary>
         [JsonProperty("au_becs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("au_becs_debit")]
+#endif
         public PaymentMethodConfigurationAuBecsDebitOptions AuBecsDebit { get; set; }
 
         /// <summary>
@@ -88,6 +118,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// details.
         /// </summary>
         [JsonProperty("bacs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bacs_debit")]
+#endif
         public PaymentMethodConfigurationBacsDebitOptions BacsDebit { get; set; }
 
         /// <summary>
@@ -98,6 +131,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/bancontact">page</a> for more details.
         /// </summary>
         [JsonProperty("bancontact")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bancontact")]
+#endif
         public PaymentMethodConfigurationBancontactOptions Bancontact { get; set; }
 
         /// <summary>
@@ -108,6 +144,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/blik">page</a> for more details.
         /// </summary>
         [JsonProperty("blik")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("blik")]
+#endif
         public PaymentMethodConfigurationBlikOptions Blik { get; set; }
 
         /// <summary>
@@ -116,6 +155,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// details.
         /// </summary>
         [JsonProperty("boleto")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("boleto")]
+#endif
         public PaymentMethodConfigurationBoletoOptions Boleto { get; set; }
 
         /// <summary>
@@ -123,6 +165,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// supports global and local card networks.
         /// </summary>
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public PaymentMethodConfigurationCardOptions Card { get; set; }
 
         /// <summary>
@@ -132,6 +177,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/cartes-bancaires">page</a> for more details.
         /// </summary>
         [JsonProperty("cartes_bancaires")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cartes_bancaires")]
+#endif
         public PaymentMethodConfigurationCartesBancairesOptions CartesBancaires { get; set; }
 
         /// <summary>
@@ -140,6 +188,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/cash-app-pay">page</a> for more details.
         /// </summary>
         [JsonProperty("cashapp")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cashapp")]
+#endif
         public PaymentMethodConfigurationCashappOptions Cashapp { get; set; }
 
         /// <summary>
@@ -149,6 +200,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// details.
         /// </summary>
         [JsonProperty("customer_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_balance")]
+#endif
         public PaymentMethodConfigurationCustomerBalanceOptions CustomerBalance { get; set; }
 
         /// <summary>
@@ -158,6 +212,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/eps">page</a> for more details.
         /// </summary>
         [JsonProperty("eps")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eps")]
+#endif
         public PaymentMethodConfigurationEpsOptions Eps { get; set; }
 
         /// <summary>
@@ -170,6 +227,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/fpx">page</a> for more details.
         /// </summary>
         [JsonProperty("fpx")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fpx")]
+#endif
         public PaymentMethodConfigurationFpxOptions Fpx { get; set; }
 
         /// <summary>
@@ -181,6 +241,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/giropay">page</a> for more details.
         /// </summary>
         [JsonProperty("giropay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("giropay")]
+#endif
         public PaymentMethodConfigurationGiropayOptions Giropay { get; set; }
 
         /// <summary>
@@ -191,6 +254,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// href="https://stripe.com/docs/google-pay">page</a> for more details.
         /// </summary>
         [JsonProperty("google_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("google_pay")]
+#endif
         public PaymentMethodConfigurationGooglePayOptions GooglePay { get; set; }
 
         /// <summary>
@@ -200,6 +266,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// this <a href="https://stripe.com/docs/payments/grabpay">page</a> for more details.
         /// </summary>
         [JsonProperty("grabpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("grabpay")]
+#endif
         public PaymentMethodConfigurationGrabpayOptions Grabpay { get; set; }
 
         /// <summary>
@@ -210,6 +279,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// <a href="https://stripe.com/docs/payments/ideal">page</a> for more details.
         /// </summary>
         [JsonProperty("ideal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ideal")]
+#endif
         public PaymentMethodConfigurationIdealOptions Ideal { get; set; }
 
         /// <summary>
@@ -221,6 +293,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// for more details.
         /// </summary>
         [JsonProperty("jcb")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("jcb")]
+#endif
         public PaymentMethodConfigurationJcbOptions Jcb { get; set; }
 
         /// <summary>
@@ -232,6 +307,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/klarna">page</a> for more details.
         /// </summary>
         [JsonProperty("klarna")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("klarna")]
+#endif
         public PaymentMethodConfigurationKlarnaOptions Klarna { get; set; }
 
         /// <summary>
@@ -240,6 +318,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// for more details.
         /// </summary>
         [JsonProperty("konbini")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("konbini")]
+#endif
         public PaymentMethodConfigurationKonbiniOptions Konbini { get; set; }
 
         /// <summary>
@@ -248,6 +329,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// with one click for any business on the network.
         /// </summary>
         [JsonProperty("link")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("link")]
+#endif
         public PaymentMethodConfigurationLinkOptions Link { get; set; }
 
         /// <summary>
@@ -259,6 +343,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/mobilepay">page</a> for more details.
         /// </summary>
         [JsonProperty("mobilepay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mobilepay")]
+#endif
         public PaymentMethodConfigurationMobilepayOptions Mobilepay { get; set; }
 
         /// <summary>
@@ -267,12 +354,18 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// single integration path for creating payments using any supported method.
         /// </summary>
         [JsonProperty("multibanco")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("multibanco")]
+#endif
         public PaymentMethodConfigurationMultibancoOptions Multibanco { get; set; }
 
         /// <summary>
         /// Configuration name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -282,6 +375,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/oxxo">page</a> for more details.
         /// </summary>
         [JsonProperty("oxxo")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("oxxo")]
+#endif
         public PaymentMethodConfigurationOxxoOptions Oxxo { get; set; }
 
         /// <summary>
@@ -292,12 +388,18 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// more details.
         /// </summary>
         [JsonProperty("p24")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("p24")]
+#endif
         public PaymentMethodConfigurationP24Options P24 { get; set; }
 
         /// <summary>
         /// Configuration's parent configuration. Specify to create a child configuration.
         /// </summary>
         [JsonProperty("parent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("parent")]
+#endif
         public string Parent { get; set; }
 
         /// <summary>
@@ -307,6 +409,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// themselves, and is less expensive than card payments.
         /// </summary>
         [JsonProperty("pay_by_bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_by_bank")]
+#endif
         public PaymentMethodConfigurationPayByBankOptions PayByBank { get; set; }
 
         /// <summary>
@@ -316,6 +421,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// more details.
         /// </summary>
         [JsonProperty("paynow")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paynow")]
+#endif
         public PaymentMethodConfigurationPaynowOptions Paynow { get; set; }
 
         /// <summary>
@@ -324,6 +432,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/paypal">page</a> for more details.
         /// </summary>
         [JsonProperty("paypal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paypal")]
+#endif
         public PaymentMethodConfigurationPaypalOptions Paypal { get; set; }
 
         /// <summary>
@@ -332,6 +443,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/promptpay">page</a> for more details.
         /// </summary>
         [JsonProperty("promptpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promptpay")]
+#endif
         public PaymentMethodConfigurationPromptpayOptions Promptpay { get; set; }
 
         /// <summary>
@@ -341,6 +455,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// purchase.
         /// </summary>
         [JsonProperty("revolut_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("revolut_pay")]
+#endif
         public PaymentMethodConfigurationRevolutPayOptions RevolutPay { get; set; }
 
         /// <summary>
@@ -352,6 +469,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// more details.
         /// </summary>
         [JsonProperty("sepa_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_debit")]
+#endif
         public PaymentMethodConfigurationSepaDebitOptions SepaDebit { get; set; }
 
         /// <summary>
@@ -362,6 +482,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/sofort">page</a> for more details.
         /// </summary>
         [JsonProperty("sofort")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sofort")]
+#endif
         public PaymentMethodConfigurationSofortOptions Sofort { get; set; }
 
         /// <summary>
@@ -372,6 +495,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// Check this <a href="https://stripe.com/docs/payments/swish">page</a> for more details.
         /// </summary>
         [JsonProperty("swish")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("swish")]
+#endif
         public PaymentMethodConfigurationSwishOptions Swish { get; set; }
 
         /// <summary>
@@ -380,6 +506,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// more details.
         /// </summary>
         [JsonProperty("twint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("twint")]
+#endif
         public PaymentMethodConfigurationTwintOptions Twint { get; set; }
 
         /// <summary>
@@ -389,6 +518,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/ach-direct-debit">page</a> for more details.
         /// </summary>
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public PaymentMethodConfigurationUsBankAccountOptions UsBankAccount { get; set; }
 
         /// <summary>
@@ -399,6 +531,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/wechat-pay">page</a> for more details.
         /// </summary>
         [JsonProperty("wechat_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wechat_pay")]
+#endif
         public PaymentMethodConfigurationWechatPayOptions WechatPay { get; set; }
 
         /// <summary>
@@ -407,6 +542,9 @@ public class PaymentMethodConfigurationCreateOptions : BaseOptions
         /// availability.
         /// </summary>
         [JsonProperty("zip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("zip")]
+#endif
         public PaymentMethodConfigurationZipOptions Zip { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCustomerBalanceDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCustomerBalanceDisplayPreferenceOptions.cs
index dbcb3ca801..ddf70ea0bf 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCustomerBalanceDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCustomerBalanceDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationCustomerBalanceDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationCustomerBalanceDisplayPreferenceOptions :
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCustomerBalanceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCustomerBalanceOptions.cs
index 1b700db133..6cd64fc6e6 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCustomerBalanceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationCustomerBalanceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationCustomerBalanceOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationCustomerBalanceOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationCustomerBalanceDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationEpsDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationEpsDisplayPreferenceOptions.cs
index 97f5822127..ad3eb9419f 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationEpsDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationEpsDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationEpsDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationEpsDisplayPreferenceOptions : INestedOpti
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationEpsOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationEpsOptions.cs
index 2a51fba0f5..a09ace1892 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationEpsOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationEpsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationEpsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationEpsOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationEpsDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationFpxDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationFpxDisplayPreferenceOptions.cs
index b208d5540a..9b83792448 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationFpxDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationFpxDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationFpxDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationFpxDisplayPreferenceOptions : INestedOpti
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationFpxOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationFpxOptions.cs
index 33c07118fa..f5b9d5d924 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationFpxOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationFpxOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationFpxOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationFpxOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationFpxDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationGiropayDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationGiropayDisplayPreferenceOptions.cs
index 81aa68ccae..ba5cebf1c8 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationGiropayDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationGiropayDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationGiropayDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationGiropayDisplayPreferenceOptions : INested
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationGiropayOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationGiropayOptions.cs
index 83d122fdef..1f70c0d5fa 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationGiropayOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationGiropayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationGiropayOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationGiropayOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationGiropayDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationGooglePayDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationGooglePayDisplayPreferenceOptions.cs
index 603af20481..3eec32aded 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationGooglePayDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationGooglePayDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationGooglePayDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationGooglePayDisplayPreferenceOptions : INest
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationGooglePayOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationGooglePayOptions.cs
index cea516871d..ad50424b8a 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationGooglePayOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationGooglePayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationGooglePayOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationGooglePayOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationGooglePayDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationGrabpayDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationGrabpayDisplayPreferenceOptions.cs
index 4126c9742d..a9a62d3d80 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationGrabpayDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationGrabpayDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationGrabpayDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationGrabpayDisplayPreferenceOptions : INested
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationGrabpayOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationGrabpayOptions.cs
index 2d13b1494f..d8d07ae884 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationGrabpayOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationGrabpayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationGrabpayOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationGrabpayOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationGrabpayDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationIdealDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationIdealDisplayPreferenceOptions.cs
index 6858943f0b..9aec95c933 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationIdealDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationIdealDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationIdealDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationIdealDisplayPreferenceOptions : INestedOp
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationIdealOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationIdealOptions.cs
index 2f288fbf03..97805ae7fd 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationIdealOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationIdealOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationIdealOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationIdealOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationIdealDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationJcbDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationJcbDisplayPreferenceOptions.cs
index 5639aeaf62..573f693c6d 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationJcbDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationJcbDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationJcbDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationJcbDisplayPreferenceOptions : INestedOpti
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationJcbOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationJcbOptions.cs
index 5bb8994def..40b7b6cc63 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationJcbOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationJcbOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationJcbOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationJcbOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationJcbDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationKlarnaDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationKlarnaDisplayPreferenceOptions.cs
index 7ec0cfae8a..74dac1b146 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationKlarnaDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationKlarnaDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationKlarnaDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationKlarnaDisplayPreferenceOptions : INestedO
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationKlarnaOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationKlarnaOptions.cs
index 05e04290f4..ed6d5bafe6 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationKlarnaOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationKlarnaOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationKlarnaOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationKlarnaOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationKlarnaDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationKonbiniDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationKonbiniDisplayPreferenceOptions.cs
index 204212343b..91c74e3cc3 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationKonbiniDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationKonbiniDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationKonbiniDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationKonbiniDisplayPreferenceOptions : INested
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationKonbiniOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationKonbiniOptions.cs
index 2ac71614cd..92266cc171 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationKonbiniOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationKonbiniOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationKonbiniOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationKonbiniOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationKonbiniDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationLinkDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationLinkDisplayPreferenceOptions.cs
index 596c988125..fa6f663059 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationLinkDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationLinkDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationLinkDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationLinkDisplayPreferenceOptions : INestedOpt
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationLinkOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationLinkOptions.cs
index 88e8cbb76a..070ed58bb0 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationLinkOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationLinkOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationLinkOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationLinkOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationLinkDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationListOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationListOptions.cs
index 1c840c47d9..33ebc12d17 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationListOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationListOptions : ListOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationListOptions : ListOptions
         /// The Connect application to filter by.
         /// </summary>
         [JsonProperty("application")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application")]
+#endif
         public string Application { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationMobilepayDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationMobilepayDisplayPreferenceOptions.cs
index f4fae56502..a57fad275a 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationMobilepayDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationMobilepayDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationMobilepayDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationMobilepayDisplayPreferenceOptions : INest
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationMobilepayOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationMobilepayOptions.cs
index 9b11c49cf8..c44c6ce743 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationMobilepayOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationMobilepayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationMobilepayOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationMobilepayOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationMobilepayDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationMultibancoDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationMultibancoDisplayPreferenceOptions.cs
index e924a813ee..199ab10e6f 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationMultibancoDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationMultibancoDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationMultibancoDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationMultibancoDisplayPreferenceOptions : INes
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationMultibancoOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationMultibancoOptions.cs
index 936f37e04f..5337bb9672 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationMultibancoOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationMultibancoOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationMultibancoOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationMultibancoOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationMultibancoDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationOxxoDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationOxxoDisplayPreferenceOptions.cs
index f3559b3b6c..1d9fdf26ca 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationOxxoDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationOxxoDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationOxxoDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationOxxoDisplayPreferenceOptions : INestedOpt
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationOxxoOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationOxxoOptions.cs
index 96376fe957..b3618f6281 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationOxxoOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationOxxoOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationOxxoOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationOxxoOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationOxxoDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationP24DisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationP24DisplayPreferenceOptions.cs
index 035e351c9b..0e59181800 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationP24DisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationP24DisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationP24DisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationP24DisplayPreferenceOptions : INestedOpti
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationP24Options.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationP24Options.cs
index fcd8b0a104..6b0938d9fa 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationP24Options.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationP24Options.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationP24Options : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationP24Options : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationP24DisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPayByBankDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPayByBankDisplayPreferenceOptions.cs
index 0d2c0ded9b..f0e7d89413 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPayByBankDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPayByBankDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationPayByBankDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationPayByBankDisplayPreferenceOptions : INest
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPayByBankOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPayByBankOptions.cs
index 9a87f2fc64..6580c05d7d 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPayByBankOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPayByBankOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationPayByBankOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationPayByBankOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationPayByBankDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPaynowDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPaynowDisplayPreferenceOptions.cs
index 7a06748e31..df3fed092e 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPaynowDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPaynowDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationPaynowDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationPaynowDisplayPreferenceOptions : INestedO
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPaynowOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPaynowOptions.cs
index b3173594f6..a770e92fc3 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPaynowOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPaynowOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationPaynowOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationPaynowOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationPaynowDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPaypalDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPaypalDisplayPreferenceOptions.cs
index aa3b0a7d45..252b413902 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPaypalDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPaypalDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationPaypalDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationPaypalDisplayPreferenceOptions : INestedO
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPaypalOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPaypalOptions.cs
index 0d3a3c9936..5723f5763c 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPaypalOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPaypalOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationPaypalOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationPaypalOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationPaypalDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPromptpayDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPromptpayDisplayPreferenceOptions.cs
index 7cdde91e08..9a671ea91d 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPromptpayDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPromptpayDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationPromptpayDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationPromptpayDisplayPreferenceOptions : INest
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPromptpayOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPromptpayOptions.cs
index 1499cc0767..e98681c6e3 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPromptpayOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationPromptpayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationPromptpayOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationPromptpayOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationPromptpayDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationRevolutPayDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationRevolutPayDisplayPreferenceOptions.cs
index d32e84463f..9e78df814d 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationRevolutPayDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationRevolutPayDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationRevolutPayDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationRevolutPayDisplayPreferenceOptions : INes
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationRevolutPayOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationRevolutPayOptions.cs
index b84f59aaf5..8397e09e7b 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationRevolutPayOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationRevolutPayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationRevolutPayOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationRevolutPayOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationRevolutPayDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationSepaDebitDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationSepaDebitDisplayPreferenceOptions.cs
index d43557b2f6..0ff06dfa1e 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationSepaDebitDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationSepaDebitDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationSepaDebitDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationSepaDebitDisplayPreferenceOptions : INest
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationSepaDebitOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationSepaDebitOptions.cs
index 41c6d28cee..45f8529c68 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationSepaDebitOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationSepaDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationSepaDebitOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationSepaDebitOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationSepaDebitDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationService.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationService.cs
index 2d37da54c3..6fb7774508 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationService.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class PaymentMethodConfigurationService : Service<PaymentMethodConfiguration>,
+    public class PaymentMethodConfigurationService : Service,
         ICreatable<PaymentMethodConfiguration, PaymentMethodConfigurationCreateOptions>,
         IListable<PaymentMethodConfiguration, PaymentMethodConfigurationListOptions>,
         IRetrievable<PaymentMethodConfiguration, PaymentMethodConfigurationGetOptions>,
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationSofortDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationSofortDisplayPreferenceOptions.cs
index 62fe515eb6..eadd508033 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationSofortDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationSofortDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationSofortDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationSofortDisplayPreferenceOptions : INestedO
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationSofortOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationSofortOptions.cs
index f8bf856763..e2ec896ba3 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationSofortOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationSofortOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationSofortOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationSofortOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationSofortDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationSwishDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationSwishDisplayPreferenceOptions.cs
index 16957bead3..fdc06252cf 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationSwishDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationSwishDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationSwishDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationSwishDisplayPreferenceOptions : INestedOp
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationSwishOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationSwishOptions.cs
index 327fb3cbdb..3c98140279 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationSwishOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationSwishOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationSwishOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationSwishOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationSwishDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationTwintDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationTwintDisplayPreferenceOptions.cs
index 6eb72ad892..e816fa9324 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationTwintDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationTwintDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationTwintDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationTwintDisplayPreferenceOptions : INestedOp
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationTwintOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationTwintOptions.cs
index 20633c1feb..6d8d99108e 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationTwintOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationTwintOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationTwintOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationTwintOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationTwintDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationUpdateOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationUpdateOptions.cs
index e313dfafbc..0fd3c75e69 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationUpdateOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationUpdateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationUpdateOptions : BaseOptions
     {
@@ -11,12 +14,18 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// country availability.
         /// </summary>
         [JsonProperty("acss_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acss_debit")]
+#endif
         public PaymentMethodConfigurationAcssDebitOptions AcssDebit { get; set; }
 
         /// <summary>
         /// Whether the configuration can be used for new payments.
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool? Active { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// for more details like country availability.
         /// </summary>
         [JsonProperty("affirm")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("affirm")]
+#endif
         public PaymentMethodConfigurationAffirmOptions Affirm { get; set; }
 
         /// <summary>
@@ -36,6 +48,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// beauty, and sports products.
         /// </summary>
         [JsonProperty("afterpay_clearpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("afterpay_clearpay")]
+#endif
         public PaymentMethodConfigurationAfterpayClearpayOptions AfterpayClearpay { get; set; }
 
         /// <summary>
@@ -46,6 +61,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/alipay">page</a> for more details.
         /// </summary>
         [JsonProperty("alipay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alipay")]
+#endif
         public PaymentMethodConfigurationAlipayOptions Alipay { get; set; }
 
         /// <summary>
@@ -53,6 +71,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// 2, 3, or 4 installments.
         /// </summary>
         [JsonProperty("alma")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alma")]
+#endif
         public PaymentMethodConfigurationAlmaOptions Alma { get; set; }
 
         /// <summary>
@@ -60,6 +81,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// on Amazon.
         /// </summary>
         [JsonProperty("amazon_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amazon_pay")]
+#endif
         public PaymentMethodConfigurationAmazonPayOptions AmazonPay { get; set; }
 
         /// <summary>
@@ -70,6 +94,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// Check this <a href="https://stripe.com/docs/apple-pay">page</a> for more details.
         /// </summary>
         [JsonProperty("apple_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("apple_pay")]
+#endif
         public PaymentMethodConfigurationApplePayOptions ApplePay { get; set; }
 
         /// <summary>
@@ -77,6 +104,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// customers a way to split purchases into four installments across six weeks.
         /// </summary>
         [JsonProperty("apple_pay_later")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("apple_pay_later")]
+#endif
         public PaymentMethodConfigurationApplePayLaterOptions ApplePayLater { get; set; }
 
         /// <summary>
@@ -85,6 +115,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/au-becs-debit">page</a> for more details.
         /// </summary>
         [JsonProperty("au_becs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("au_becs_debit")]
+#endif
         public PaymentMethodConfigurationAuBecsDebitOptions AuBecsDebit { get; set; }
 
         /// <summary>
@@ -94,6 +127,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// details.
         /// </summary>
         [JsonProperty("bacs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bacs_debit")]
+#endif
         public PaymentMethodConfigurationBacsDebitOptions BacsDebit { get; set; }
 
         /// <summary>
@@ -104,6 +140,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/bancontact">page</a> for more details.
         /// </summary>
         [JsonProperty("bancontact")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bancontact")]
+#endif
         public PaymentMethodConfigurationBancontactOptions Bancontact { get; set; }
 
         /// <summary>
@@ -114,6 +153,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/blik">page</a> for more details.
         /// </summary>
         [JsonProperty("blik")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("blik")]
+#endif
         public PaymentMethodConfigurationBlikOptions Blik { get; set; }
 
         /// <summary>
@@ -122,6 +164,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// details.
         /// </summary>
         [JsonProperty("boleto")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("boleto")]
+#endif
         public PaymentMethodConfigurationBoletoOptions Boleto { get; set; }
 
         /// <summary>
@@ -129,6 +174,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// supports global and local card networks.
         /// </summary>
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public PaymentMethodConfigurationCardOptions Card { get; set; }
 
         /// <summary>
@@ -138,6 +186,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/cartes-bancaires">page</a> for more details.
         /// </summary>
         [JsonProperty("cartes_bancaires")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cartes_bancaires")]
+#endif
         public PaymentMethodConfigurationCartesBancairesOptions CartesBancaires { get; set; }
 
         /// <summary>
@@ -146,6 +197,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/cash-app-pay">page</a> for more details.
         /// </summary>
         [JsonProperty("cashapp")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cashapp")]
+#endif
         public PaymentMethodConfigurationCashappOptions Cashapp { get; set; }
 
         /// <summary>
@@ -155,6 +209,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// details.
         /// </summary>
         [JsonProperty("customer_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_balance")]
+#endif
         public PaymentMethodConfigurationCustomerBalanceOptions CustomerBalance { get; set; }
 
         /// <summary>
@@ -164,6 +221,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/eps">page</a> for more details.
         /// </summary>
         [JsonProperty("eps")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eps")]
+#endif
         public PaymentMethodConfigurationEpsOptions Eps { get; set; }
 
         /// <summary>
@@ -176,6 +236,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/fpx">page</a> for more details.
         /// </summary>
         [JsonProperty("fpx")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fpx")]
+#endif
         public PaymentMethodConfigurationFpxOptions Fpx { get; set; }
 
         /// <summary>
@@ -187,6 +250,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/giropay">page</a> for more details.
         /// </summary>
         [JsonProperty("giropay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("giropay")]
+#endif
         public PaymentMethodConfigurationGiropayOptions Giropay { get; set; }
 
         /// <summary>
@@ -197,6 +263,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// href="https://stripe.com/docs/google-pay">page</a> for more details.
         /// </summary>
         [JsonProperty("google_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("google_pay")]
+#endif
         public PaymentMethodConfigurationGooglePayOptions GooglePay { get; set; }
 
         /// <summary>
@@ -206,6 +275,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// this <a href="https://stripe.com/docs/payments/grabpay">page</a> for more details.
         /// </summary>
         [JsonProperty("grabpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("grabpay")]
+#endif
         public PaymentMethodConfigurationGrabpayOptions Grabpay { get; set; }
 
         /// <summary>
@@ -216,6 +288,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// <a href="https://stripe.com/docs/payments/ideal">page</a> for more details.
         /// </summary>
         [JsonProperty("ideal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ideal")]
+#endif
         public PaymentMethodConfigurationIdealOptions Ideal { get; set; }
 
         /// <summary>
@@ -227,6 +302,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// for more details.
         /// </summary>
         [JsonProperty("jcb")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("jcb")]
+#endif
         public PaymentMethodConfigurationJcbOptions Jcb { get; set; }
 
         /// <summary>
@@ -238,6 +316,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/klarna">page</a> for more details.
         /// </summary>
         [JsonProperty("klarna")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("klarna")]
+#endif
         public PaymentMethodConfigurationKlarnaOptions Klarna { get; set; }
 
         /// <summary>
@@ -246,6 +327,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// for more details.
         /// </summary>
         [JsonProperty("konbini")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("konbini")]
+#endif
         public PaymentMethodConfigurationKonbiniOptions Konbini { get; set; }
 
         /// <summary>
@@ -254,6 +338,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// with one click for any business on the network.
         /// </summary>
         [JsonProperty("link")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("link")]
+#endif
         public PaymentMethodConfigurationLinkOptions Link { get; set; }
 
         /// <summary>
@@ -265,6 +352,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/mobilepay">page</a> for more details.
         /// </summary>
         [JsonProperty("mobilepay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mobilepay")]
+#endif
         public PaymentMethodConfigurationMobilepayOptions Mobilepay { get; set; }
 
         /// <summary>
@@ -273,12 +363,18 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// single integration path for creating payments using any supported method.
         /// </summary>
         [JsonProperty("multibanco")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("multibanco")]
+#endif
         public PaymentMethodConfigurationMultibancoOptions Multibanco { get; set; }
 
         /// <summary>
         /// Configuration name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -288,6 +384,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/oxxo">page</a> for more details.
         /// </summary>
         [JsonProperty("oxxo")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("oxxo")]
+#endif
         public PaymentMethodConfigurationOxxoOptions Oxxo { get; set; }
 
         /// <summary>
@@ -298,6 +397,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// more details.
         /// </summary>
         [JsonProperty("p24")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("p24")]
+#endif
         public PaymentMethodConfigurationP24Options P24 { get; set; }
 
         /// <summary>
@@ -307,6 +409,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// themselves, and is less expensive than card payments.
         /// </summary>
         [JsonProperty("pay_by_bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_by_bank")]
+#endif
         public PaymentMethodConfigurationPayByBankOptions PayByBank { get; set; }
 
         /// <summary>
@@ -316,6 +421,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// more details.
         /// </summary>
         [JsonProperty("paynow")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paynow")]
+#endif
         public PaymentMethodConfigurationPaynowOptions Paynow { get; set; }
 
         /// <summary>
@@ -324,6 +432,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/paypal">page</a> for more details.
         /// </summary>
         [JsonProperty("paypal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paypal")]
+#endif
         public PaymentMethodConfigurationPaypalOptions Paypal { get; set; }
 
         /// <summary>
@@ -332,6 +443,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/promptpay">page</a> for more details.
         /// </summary>
         [JsonProperty("promptpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promptpay")]
+#endif
         public PaymentMethodConfigurationPromptpayOptions Promptpay { get; set; }
 
         /// <summary>
@@ -341,6 +455,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// purchase.
         /// </summary>
         [JsonProperty("revolut_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("revolut_pay")]
+#endif
         public PaymentMethodConfigurationRevolutPayOptions RevolutPay { get; set; }
 
         /// <summary>
@@ -352,6 +469,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// more details.
         /// </summary>
         [JsonProperty("sepa_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_debit")]
+#endif
         public PaymentMethodConfigurationSepaDebitOptions SepaDebit { get; set; }
 
         /// <summary>
@@ -362,6 +482,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/sofort">page</a> for more details.
         /// </summary>
         [JsonProperty("sofort")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sofort")]
+#endif
         public PaymentMethodConfigurationSofortOptions Sofort { get; set; }
 
         /// <summary>
@@ -372,6 +495,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// Check this <a href="https://stripe.com/docs/payments/swish">page</a> for more details.
         /// </summary>
         [JsonProperty("swish")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("swish")]
+#endif
         public PaymentMethodConfigurationSwishOptions Swish { get; set; }
 
         /// <summary>
@@ -380,6 +506,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// more details.
         /// </summary>
         [JsonProperty("twint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("twint")]
+#endif
         public PaymentMethodConfigurationTwintOptions Twint { get; set; }
 
         /// <summary>
@@ -389,6 +518,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/ach-direct-debit">page</a> for more details.
         /// </summary>
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public PaymentMethodConfigurationUsBankAccountOptions UsBankAccount { get; set; }
 
         /// <summary>
@@ -399,6 +531,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// href="https://stripe.com/docs/payments/wechat-pay">page</a> for more details.
         /// </summary>
         [JsonProperty("wechat_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wechat_pay")]
+#endif
         public PaymentMethodConfigurationWechatPayOptions WechatPay { get; set; }
 
         /// <summary>
@@ -407,6 +542,9 @@ public class PaymentMethodConfigurationUpdateOptions : BaseOptions
         /// availability.
         /// </summary>
         [JsonProperty("zip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("zip")]
+#endif
         public PaymentMethodConfigurationZipOptions Zip { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationUsBankAccountDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationUsBankAccountDisplayPreferenceOptions.cs
index c2a4ef3d60..7af40d5247 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationUsBankAccountDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationUsBankAccountDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationUsBankAccountDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationUsBankAccountDisplayPreferenceOptions : I
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationUsBankAccountOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationUsBankAccountOptions.cs
index cf087f9e81..0432b8d7c4 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationUsBankAccountOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationUsBankAccountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationUsBankAccountOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationUsBankAccountOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationUsBankAccountDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationWechatPayDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationWechatPayDisplayPreferenceOptions.cs
index dfe4489476..7ae86bbce8 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationWechatPayDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationWechatPayDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationWechatPayDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationWechatPayDisplayPreferenceOptions : INest
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationWechatPayOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationWechatPayOptions.cs
index 74699f48e2..21abbddec2 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationWechatPayOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationWechatPayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationWechatPayOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationWechatPayOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationWechatPayDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationZipDisplayPreferenceOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationZipDisplayPreferenceOptions.cs
index 3b7f22320c..3d332c92ea 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationZipDisplayPreferenceOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationZipDisplayPreferenceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationZipDisplayPreferenceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodConfigurationZipDisplayPreferenceOptions : INestedOpti
         /// One of: <c>none</c>, <c>off</c>, or <c>on</c>.
         /// </summary>
         [JsonProperty("preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preference")]
+#endif
         public string Preference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationZipOptions.cs b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationZipOptions.cs
index ef87fc4603..7b28c47f2e 100644
--- a/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationZipOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodConfigurations/PaymentMethodConfigurationZipOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodConfigurationZipOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodConfigurationZipOptions : INestedOptions
         /// Whether or not the payment method should be displayed.
         /// </summary>
         [JsonProperty("display_preference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_preference")]
+#endif
         public PaymentMethodConfigurationZipDisplayPreferenceOptions DisplayPreference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodDomains/PaymentMethodDomainCreateOptions.cs b/src/Stripe.net/Services/PaymentMethodDomains/PaymentMethodDomainCreateOptions.cs
index 6e3a7f80d9..34cee048b5 100644
--- a/src/Stripe.net/Services/PaymentMethodDomains/PaymentMethodDomainCreateOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodDomains/PaymentMethodDomainCreateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodDomainCreateOptions : BaseOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodDomainCreateOptions : BaseOptions
         /// The domain name that this payment method domain object represents.
         /// </summary>
         [JsonProperty("domain_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("domain_name")]
+#endif
         public string DomainName { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class PaymentMethodDomainCreateOptions : BaseOptions
         /// methods that require a payment method domain will not appear in Elements.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodDomains/PaymentMethodDomainListOptions.cs b/src/Stripe.net/Services/PaymentMethodDomains/PaymentMethodDomainListOptions.cs
index 9296b9edcb..373c6af3b3 100644
--- a/src/Stripe.net/Services/PaymentMethodDomains/PaymentMethodDomainListOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodDomains/PaymentMethodDomainListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodDomainListOptions : ListOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodDomainListOptions : ListOptions
         /// The domain name that this payment method domain object represents.
         /// </summary>
         [JsonProperty("domain_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("domain_name")]
+#endif
         public string DomainName { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class PaymentMethodDomainListOptions : ListOptions
         /// methods will not appear in Elements.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethodDomains/PaymentMethodDomainService.cs b/src/Stripe.net/Services/PaymentMethodDomains/PaymentMethodDomainService.cs
index 028b1ad610..0cafe2b2af 100644
--- a/src/Stripe.net/Services/PaymentMethodDomains/PaymentMethodDomainService.cs
+++ b/src/Stripe.net/Services/PaymentMethodDomains/PaymentMethodDomainService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class PaymentMethodDomainService : Service<PaymentMethodDomain>,
+    public class PaymentMethodDomainService : Service,
         ICreatable<PaymentMethodDomain, PaymentMethodDomainCreateOptions>,
         IListable<PaymentMethodDomain, PaymentMethodDomainListOptions>,
         IRetrievable<PaymentMethodDomain, PaymentMethodDomainGetOptions>,
diff --git a/src/Stripe.net/Services/PaymentMethodDomains/PaymentMethodDomainUpdateOptions.cs b/src/Stripe.net/Services/PaymentMethodDomains/PaymentMethodDomainUpdateOptions.cs
index 9c850286ce..368d7ddc75 100644
--- a/src/Stripe.net/Services/PaymentMethodDomains/PaymentMethodDomainUpdateOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethodDomains/PaymentMethodDomainUpdateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodDomainUpdateOptions : BaseOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodDomainUpdateOptions : BaseOptions
         /// methods that require a payment method domain will not appear in Elements.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethods/PaymentMethodAcssDebitOptions.cs b/src/Stripe.net/Services/PaymentMethods/PaymentMethodAcssDebitOptions.cs
index ccd690b563..4feb89a8d8 100644
--- a/src/Stripe.net/Services/PaymentMethods/PaymentMethodAcssDebitOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethods/PaymentMethodAcssDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodAcssDebitOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class PaymentMethodAcssDebitOptions : INestedOptions
         /// Customer's bank account number.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
         /// Institution number of the customer's bank.
         /// </summary>
         [JsonProperty("institution_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("institution_number")]
+#endif
         public string InstitutionNumber { get; set; }
 
         /// <summary>
         /// Transit number of the customer's bank.
         /// </summary>
         [JsonProperty("transit_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transit_number")]
+#endif
         public string TransitNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethods/PaymentMethodAttachOptions.cs b/src/Stripe.net/Services/PaymentMethods/PaymentMethodAttachOptions.cs
index 688fc3c14d..a08bb1ae79 100644
--- a/src/Stripe.net/Services/PaymentMethods/PaymentMethodAttachOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethods/PaymentMethodAttachOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodAttachOptions : BaseOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodAttachOptions : BaseOptions
         /// The ID of the customer to which to attach the PaymentMethod.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethods/PaymentMethodAuBecsDebitOptions.cs b/src/Stripe.net/Services/PaymentMethods/PaymentMethodAuBecsDebitOptions.cs
index 8ec2b539b1..44f1965dad 100644
--- a/src/Stripe.net/Services/PaymentMethods/PaymentMethodAuBecsDebitOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethods/PaymentMethodAuBecsDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodAuBecsDebitOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class PaymentMethodAuBecsDebitOptions : INestedOptions
         /// The account number for the bank account.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
         /// Bank-State-Branch number of the bank account.
         /// </summary>
         [JsonProperty("bsb_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bsb_number")]
+#endif
         public string BsbNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethods/PaymentMethodBacsDebitOptions.cs b/src/Stripe.net/Services/PaymentMethods/PaymentMethodBacsDebitOptions.cs
index 2dc4cfbe06..0ca555d5d5 100644
--- a/src/Stripe.net/Services/PaymentMethods/PaymentMethodBacsDebitOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethods/PaymentMethodBacsDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodBacsDebitOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class PaymentMethodBacsDebitOptions : INestedOptions
         /// Account number of the bank account that the funds will be debited from.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
         /// Sort code of the bank account. (e.g., <c>10-20-30</c>).
         /// </summary>
         [JsonProperty("sort_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sort_code")]
+#endif
         public string SortCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethods/PaymentMethodBillingDetailsOptions.cs b/src/Stripe.net/Services/PaymentMethods/PaymentMethodBillingDetailsOptions.cs
index 39ef798a1c..b5fc921b67 100644
--- a/src/Stripe.net/Services/PaymentMethods/PaymentMethodBillingDetailsOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethods/PaymentMethodBillingDetailsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodBillingDetailsOptions : INestedOptions
     {
@@ -9,24 +12,36 @@ public class PaymentMethodBillingDetailsOptions : INestedOptions
         /// Billing address.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public AddressOptions Address { get; set; }
 
         /// <summary>
         /// Email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// Full name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// Billing phone number (including extension).
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethods/PaymentMethodBoletoOptions.cs b/src/Stripe.net/Services/PaymentMethods/PaymentMethodBoletoOptions.cs
index e075107c14..dd58ce8881 100644
--- a/src/Stripe.net/Services/PaymentMethods/PaymentMethodBoletoOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethods/PaymentMethodBoletoOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodBoletoOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodBoletoOptions : INestedOptions
         /// consumers).
         /// </summary>
         [JsonProperty("tax_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_id")]
+#endif
         public string TaxId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethods/PaymentMethodCardNetworksOptions.cs b/src/Stripe.net/Services/PaymentMethods/PaymentMethodCardNetworksOptions.cs
index 9274756eeb..1d9f6397c2 100644
--- a/src/Stripe.net/Services/PaymentMethods/PaymentMethodCardNetworksOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethods/PaymentMethodCardNetworksOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodCardNetworksOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class PaymentMethodCardNetworksOptions : INestedOptions
         /// One of: <c>cartes_bancaires</c>, <c>mastercard</c>, or <c>visa</c>.
         /// </summary>
         [JsonProperty("preferred")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred")]
+#endif
         public string Preferred { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethods/PaymentMethodCardOptions.cs b/src/Stripe.net/Services/PaymentMethods/PaymentMethodCardOptions.cs
index 989a9894da..a5eb484487 100644
--- a/src/Stripe.net/Services/PaymentMethods/PaymentMethodCardOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethods/PaymentMethodCardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodCardOptions : INestedOptions
     {
@@ -9,30 +12,45 @@ public class PaymentMethodCardOptions : INestedOptions
         /// The card's CVC. It is highly recommended to always include this value.
         /// </summary>
         [JsonProperty("cvc")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cvc")]
+#endif
         public string Cvc { get; set; }
 
         /// <summary>
         /// Two-digit number representing the card's expiration month.
         /// </summary>
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public long? ExpMonth { get; set; }
 
         /// <summary>
         /// Four-digit number representing the card's expiration year.
         /// </summary>
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public long? ExpYear { get; set; }
 
         /// <summary>
         /// Contains information about card networks used to process the payment.
         /// </summary>
         [JsonProperty("networks")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("networks")]
+#endif
         public PaymentMethodCardNetworksOptions Networks { get; set; }
 
         /// <summary>
         /// The card number, as a string without any separators.
         /// </summary>
         [JsonProperty("number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("number")]
+#endif
         public string Number { get; set; }
 
         /// <summary>
@@ -41,6 +59,9 @@ public class PaymentMethodCardOptions : INestedOptions
         /// card: {token: "tok_visa"}.
         /// </summary>
         [JsonProperty("token")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("token")]
+#endif
         public string Token { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethods/PaymentMethodCreateOptions.cs b/src/Stripe.net/Services/PaymentMethods/PaymentMethodCreateOptions.cs
index 90eec54791..7039a105a2 100644
--- a/src/Stripe.net/Services/PaymentMethods/PaymentMethodCreateOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethods/PaymentMethodCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
     {
@@ -11,6 +14,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// Debit payment method.
         /// </summary>
         [JsonProperty("acss_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acss_debit")]
+#endif
         public PaymentMethodAcssDebitOptions AcssDebit { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("affirm")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("affirm")]
+#endif
         public PaymentMethodAffirmOptions Affirm { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// the AfterpayClearpay payment method.
         /// </summary>
         [JsonProperty("afterpay_clearpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("afterpay_clearpay")]
+#endif
         public PaymentMethodAfterpayClearpayOptions AfterpayClearpay { get; set; }
 
         /// <summary>
@@ -32,6 +44,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("alipay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alipay")]
+#endif
         public PaymentMethodAlipayOptions Alipay { get; set; }
 
         /// <summary>
@@ -42,6 +57,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>always</c>, <c>limited</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("allow_redisplay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allow_redisplay")]
+#endif
         public string AllowRedisplay { get; set; }
 
         /// <summary>
@@ -49,6 +67,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// method.
         /// </summary>
         [JsonProperty("alma")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alma")]
+#endif
         public PaymentMethodAlmaOptions Alma { get; set; }
 
         /// <summary>
@@ -56,6 +77,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("amazon_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amazon_pay")]
+#endif
         public PaymentMethodAmazonPayOptions AmazonPay { get; set; }
 
         /// <summary>
@@ -63,6 +87,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// bank account.
         /// </summary>
         [JsonProperty("au_becs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("au_becs_debit")]
+#endif
         public PaymentMethodAuBecsDebitOptions AuBecsDebit { get; set; }
 
         /// <summary>
@@ -70,6 +97,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// Direct Debit bank account.
         /// </summary>
         [JsonProperty("bacs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bacs_debit")]
+#endif
         public PaymentMethodBacsDebitOptions BacsDebit { get; set; }
 
         /// <summary>
@@ -77,6 +107,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// Bancontact payment method.
         /// </summary>
         [JsonProperty("bancontact")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bancontact")]
+#endif
         public PaymentMethodBancontactOptions Bancontact { get; set; }
 
         /// <summary>
@@ -84,6 +117,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// particular types of payment methods.
         /// </summary>
         [JsonProperty("billing_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_details")]
+#endif
         public PaymentMethodBillingDetailsOptions BillingDetails { get; set; }
 
         /// <summary>
@@ -91,6 +127,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("blik")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("blik")]
+#endif
         public PaymentMethodBlikOptions Blik { get; set; }
 
         /// <summary>
@@ -98,6 +137,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("boleto")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("boleto")]
+#endif
         public PaymentMethodBoletoOptions Boleto { get; set; }
 
         /// <summary>
@@ -110,6 +152,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// API directly.
         /// </summary>
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public PaymentMethodCardOptions Card { get; set; }
 
         /// <summary>
@@ -117,12 +162,18 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// Pay payment method.
         /// </summary>
         [JsonProperty("cashapp")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cashapp")]
+#endif
         public PaymentMethodCashappOptions Cashapp { get; set; }
 
         /// <summary>
         /// The <c>Customer</c> to whom the original PaymentMethod is attached.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
@@ -130,6 +181,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// CustomerBalance payment method.
         /// </summary>
         [JsonProperty("customer_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_balance")]
+#endif
         public PaymentMethodCustomerBalanceOptions CustomerBalance { get; set; }
 
         /// <summary>
@@ -137,6 +191,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// method.
         /// </summary>
         [JsonProperty("eps")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eps")]
+#endif
         public PaymentMethodEpsOptions Eps { get; set; }
 
         /// <summary>
@@ -144,6 +201,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// method.
         /// </summary>
         [JsonProperty("fpx")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fpx")]
+#endif
         public PaymentMethodFpxOptions Fpx { get; set; }
 
         /// <summary>
@@ -151,6 +211,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("giropay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("giropay")]
+#endif
         public PaymentMethodGiropayOptions Giropay { get; set; }
 
         /// <summary>
@@ -158,6 +221,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("grabpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("grabpay")]
+#endif
         public PaymentMethodGrabpayOptions Grabpay { get; set; }
 
         /// <summary>
@@ -165,6 +231,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("ideal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ideal")]
+#endif
         public PaymentMethodIdealOptions Ideal { get; set; }
 
         /// <summary>
@@ -172,6 +241,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// Interac Present payment method.
         /// </summary>
         [JsonProperty("interac_present")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interac_present")]
+#endif
         public PaymentMethodInteracPresentOptions InteracPresent { get; set; }
 
         /// <summary>
@@ -179,6 +251,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// Pay payment method.
         /// </summary>
         [JsonProperty("kakao_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kakao_pay")]
+#endif
         public PaymentMethodKakaoPayOptions KakaoPay { get; set; }
 
         /// <summary>
@@ -186,6 +261,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("klarna")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("klarna")]
+#endif
         public PaymentMethodKlarnaOptions Klarna { get; set; }
 
         /// <summary>
@@ -193,6 +271,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("konbini")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("konbini")]
+#endif
         public PaymentMethodKonbiniOptions Konbini { get; set; }
 
         /// <summary>
@@ -200,6 +281,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// Card payment method.
         /// </summary>
         [JsonProperty("kr_card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kr_card")]
+#endif
         public PaymentMethodKrCardOptions KrCard { get; set; }
 
         /// <summary>
@@ -207,6 +291,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("link")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("link")]
+#endif
         public PaymentMethodLinkOptions Link { get; set; }
 
         /// <summary>
@@ -216,6 +303,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -223,6 +313,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// MobilePay payment method.
         /// </summary>
         [JsonProperty("mobilepay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mobilepay")]
+#endif
         public PaymentMethodMobilepayOptions Mobilepay { get; set; }
 
         /// <summary>
@@ -230,6 +323,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// Multibanco payment method.
         /// </summary>
         [JsonProperty("multibanco")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("multibanco")]
+#endif
         public PaymentMethodMultibancoOptions Multibanco { get; set; }
 
         /// <summary>
@@ -237,6 +333,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// Pay payment method.
         /// </summary>
         [JsonProperty("naver_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("naver_pay")]
+#endif
         public PaymentMethodNaverPayOptions NaverPay { get; set; }
 
         /// <summary>
@@ -244,6 +343,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("oxxo")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("oxxo")]
+#endif
         public PaymentMethodOxxoOptions Oxxo { get; set; }
 
         /// <summary>
@@ -251,6 +353,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// method.
         /// </summary>
         [JsonProperty("p24")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("p24")]
+#endif
         public PaymentMethodP24Options P24 { get; set; }
 
         /// <summary>
@@ -258,6 +363,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// PayByBank payment method.
         /// </summary>
         [JsonProperty("pay_by_bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_by_bank")]
+#endif
         public PaymentMethodPayByBankOptions PayByBank { get; set; }
 
         /// <summary>
@@ -265,12 +373,18 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("payco")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payco")]
+#endif
         public PaymentMethodPaycoOptions Payco { get; set; }
 
         /// <summary>
         /// The PaymentMethod to share.
         /// </summary>
         [JsonProperty("payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method")]
+#endif
         public string PaymentMethod { get; set; }
 
         /// <summary>
@@ -278,6 +392,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("paynow")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paynow")]
+#endif
         public PaymentMethodPaynowOptions Paynow { get; set; }
 
         /// <summary>
@@ -285,6 +402,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("paypal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paypal")]
+#endif
         public PaymentMethodPaypalOptions Paypal { get; set; }
 
         /// <summary>
@@ -292,6 +412,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// method.
         /// </summary>
         [JsonProperty("pix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pix")]
+#endif
         public PaymentMethodPixOptions Pix { get; set; }
 
         /// <summary>
@@ -299,6 +422,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// PromptPay payment method.
         /// </summary>
         [JsonProperty("promptpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promptpay")]
+#endif
         public PaymentMethodPromptpayOptions Promptpay { get; set; }
 
         /// <summary>
@@ -307,6 +433,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// information.
         /// </summary>
         [JsonProperty("radar_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("radar_options")]
+#endif
         public PaymentMethodRadarOptionsOptions RadarOptions { get; set; }
 
         /// <summary>
@@ -314,6 +443,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// Revolut Pay payment method.
         /// </summary>
         [JsonProperty("revolut_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("revolut_pay")]
+#endif
         public PaymentMethodRevolutPayOptions RevolutPay { get; set; }
 
         /// <summary>
@@ -321,6 +453,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// SamsungPay payment method.
         /// </summary>
         [JsonProperty("samsung_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("samsung_pay")]
+#endif
         public PaymentMethodSamsungPayOptions SamsungPay { get; set; }
 
         /// <summary>
@@ -328,6 +463,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// debit bank account.
         /// </summary>
         [JsonProperty("sepa_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_debit")]
+#endif
         public PaymentMethodSepaDebitOptions SepaDebit { get; set; }
 
         /// <summary>
@@ -335,6 +473,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("sofort")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sofort")]
+#endif
         public PaymentMethodSofortOptions Sofort { get; set; }
 
         /// <summary>
@@ -342,6 +483,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("swish")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("swish")]
+#endif
         public PaymentMethodSwishOptions Swish { get; set; }
 
         /// <summary>
@@ -349,6 +493,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// method.
         /// </summary>
         [JsonProperty("twint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("twint")]
+#endif
         public PaymentMethodTwintOptions Twint { get; set; }
 
         /// <summary>
@@ -367,6 +514,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// <c>zip</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
@@ -374,6 +524,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// US bank account payment method.
         /// </summary>
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public PaymentMethodUsBankAccountOptions UsBankAccount { get; set; }
 
         /// <summary>
@@ -381,6 +534,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// wechat_pay payment method.
         /// </summary>
         [JsonProperty("wechat_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wechat_pay")]
+#endif
         public PaymentMethodWechatPayOptions WechatPay { get; set; }
 
         /// <summary>
@@ -388,6 +544,9 @@ public class PaymentMethodCreateOptions : BaseOptions, IHasMetadata
         /// method.
         /// </summary>
         [JsonProperty("zip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("zip")]
+#endif
         public PaymentMethodZipOptions Zip { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethods/PaymentMethodEpsOptions.cs b/src/Stripe.net/Services/PaymentMethods/PaymentMethodEpsOptions.cs
index bb382323ac..13d678d84e 100644
--- a/src/Stripe.net/Services/PaymentMethods/PaymentMethodEpsOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethods/PaymentMethodEpsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodEpsOptions : INestedOptions
     {
@@ -23,6 +26,9 @@ public class PaymentMethodEpsOptions : INestedOptions
         /// <c>vr_bank_braunau</c>.
         /// </summary>
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethods/PaymentMethodFpxOptions.cs b/src/Stripe.net/Services/PaymentMethods/PaymentMethodFpxOptions.cs
index a332baa340..d42daa8750 100644
--- a/src/Stripe.net/Services/PaymentMethods/PaymentMethodFpxOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethods/PaymentMethodFpxOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodFpxOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodFpxOptions : INestedOptions
         /// One of: <c>company</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("account_holder_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_type")]
+#endif
         public string AccountHolderType { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class PaymentMethodFpxOptions : INestedOptions
         /// <c>public_bank</c>, <c>rhb</c>, <c>standard_chartered</c>, or <c>uob</c>.
         /// </summary>
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethods/PaymentMethodIdealOptions.cs b/src/Stripe.net/Services/PaymentMethods/PaymentMethodIdealOptions.cs
index 50f6e0f818..ce1d3c602e 100644
--- a/src/Stripe.net/Services/PaymentMethods/PaymentMethodIdealOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethods/PaymentMethodIdealOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodIdealOptions : INestedOptions
     {
@@ -14,6 +17,9 @@ public class PaymentMethodIdealOptions : INestedOptions
         /// <c>yoursafe</c>.
         /// </summary>
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethods/PaymentMethodKlarnaOptions.cs b/src/Stripe.net/Services/PaymentMethods/PaymentMethodKlarnaOptions.cs
index 668faacc8b..6c9cb0db97 100644
--- a/src/Stripe.net/Services/PaymentMethods/PaymentMethodKlarnaOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethods/PaymentMethodKlarnaOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodKlarnaOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodKlarnaOptions : INestedOptions
         /// Customer's date of birth.
         /// </summary>
         [JsonProperty("dob")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dob")]
+#endif
         public DobOptions Dob { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethods/PaymentMethodListOptions.cs b/src/Stripe.net/Services/PaymentMethods/PaymentMethodListOptions.cs
index c17ce05511..7b20af54b3 100644
--- a/src/Stripe.net/Services/PaymentMethods/PaymentMethodListOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethods/PaymentMethodListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodListOptions : ListOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodListOptions : ListOptions
         /// The ID of the customer whose PaymentMethods will be retrieved.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
@@ -28,6 +34,9 @@ public class PaymentMethodListOptions : ListOptions
         /// <c>zip</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethods/PaymentMethodNaverPayOptions.cs b/src/Stripe.net/Services/PaymentMethods/PaymentMethodNaverPayOptions.cs
index 31e35cd5fe..d815100ef3 100644
--- a/src/Stripe.net/Services/PaymentMethods/PaymentMethodNaverPayOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethods/PaymentMethodNaverPayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodNaverPayOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class PaymentMethodNaverPayOptions : INestedOptions
         /// One of: <c>card</c>, or <c>points</c>.
         /// </summary>
         [JsonProperty("funding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding")]
+#endif
         public string Funding { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethods/PaymentMethodP24Options.cs b/src/Stripe.net/Services/PaymentMethods/PaymentMethodP24Options.cs
index 317f4707a3..ff2277c6cb 100644
--- a/src/Stripe.net/Services/PaymentMethods/PaymentMethodP24Options.cs
+++ b/src/Stripe.net/Services/PaymentMethods/PaymentMethodP24Options.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodP24Options : INestedOptions
     {
@@ -17,6 +20,9 @@ public class PaymentMethodP24Options : INestedOptions
         /// <c>volkswagen_bank</c>.
         /// </summary>
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethods/PaymentMethodRadarOptionsOptions.cs b/src/Stripe.net/Services/PaymentMethods/PaymentMethodRadarOptionsOptions.cs
index 16ea93d62a..86b90fe043 100644
--- a/src/Stripe.net/Services/PaymentMethods/PaymentMethodRadarOptionsOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethods/PaymentMethodRadarOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodRadarOptionsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class PaymentMethodRadarOptionsOptions : INestedOptions
         /// predictions on your payments.
         /// </summary>
         [JsonProperty("session")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("session")]
+#endif
         public string Session { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethods/PaymentMethodSepaDebitOptions.cs b/src/Stripe.net/Services/PaymentMethods/PaymentMethodSepaDebitOptions.cs
index 8d9b4a13c1..9fadf48d7a 100644
--- a/src/Stripe.net/Services/PaymentMethods/PaymentMethodSepaDebitOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethods/PaymentMethodSepaDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodSepaDebitOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PaymentMethodSepaDebitOptions : INestedOptions
         /// IBAN of the bank account.
         /// </summary>
         [JsonProperty("iban")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iban")]
+#endif
         public string Iban { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethods/PaymentMethodService.cs b/src/Stripe.net/Services/PaymentMethods/PaymentMethodService.cs
index d1a98b6e91..acd6193e96 100644
--- a/src/Stripe.net/Services/PaymentMethods/PaymentMethodService.cs
+++ b/src/Stripe.net/Services/PaymentMethods/PaymentMethodService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class PaymentMethodService : Service<PaymentMethod>,
+    public class PaymentMethodService : Service,
         ICreatable<PaymentMethod, PaymentMethodCreateOptions>,
         IListable<PaymentMethod, PaymentMethodListOptions>,
         IRetrievable<PaymentMethod, PaymentMethodGetOptions>,
diff --git a/src/Stripe.net/Services/PaymentMethods/PaymentMethodSofortOptions.cs b/src/Stripe.net/Services/PaymentMethods/PaymentMethodSofortOptions.cs
index b72408d6f6..3c0524a284 100644
--- a/src/Stripe.net/Services/PaymentMethods/PaymentMethodSofortOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethods/PaymentMethodSofortOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodSofortOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PaymentMethodSofortOptions : INestedOptions
         /// One of: <c>AT</c>, <c>BE</c>, <c>DE</c>, <c>ES</c>, <c>IT</c>, or <c>NL</c>.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethods/PaymentMethodUpdateOptions.cs b/src/Stripe.net/Services/PaymentMethods/PaymentMethodUpdateOptions.cs
index fa6db48c98..67fba28738 100644
--- a/src/Stripe.net/Services/PaymentMethods/PaymentMethodUpdateOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethods/PaymentMethodUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -14,6 +17,9 @@ public class PaymentMethodUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>always</c>, <c>limited</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("allow_redisplay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allow_redisplay")]
+#endif
         public string AllowRedisplay { get; set; }
 
         /// <summary>
@@ -21,12 +27,18 @@ public class PaymentMethodUpdateOptions : BaseOptions, IHasMetadata
         /// particular types of payment methods.
         /// </summary>
         [JsonProperty("billing_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_details")]
+#endif
         public PaymentMethodBillingDetailsOptions BillingDetails { get; set; }
 
         /// <summary>
         /// If this is a <c>card</c> PaymentMethod, this hash contains the user's card details.
         /// </summary>
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public PaymentMethodCardOptions Card { get; set; }
 
         /// <summary>
@@ -34,6 +46,9 @@ public class PaymentMethodUpdateOptions : BaseOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("link")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("link")]
+#endif
         public PaymentMethodLinkOptions Link { get; set; }
 
         /// <summary>
@@ -43,6 +58,9 @@ public class PaymentMethodUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -50,6 +68,9 @@ public class PaymentMethodUpdateOptions : BaseOptions, IHasMetadata
         /// Pay payment method.
         /// </summary>
         [JsonProperty("naver_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("naver_pay")]
+#endif
         public PaymentMethodNaverPayOptions NaverPay { get; set; }
 
         /// <summary>
@@ -57,6 +78,9 @@ public class PaymentMethodUpdateOptions : BaseOptions, IHasMetadata
         /// PayByBank payment method.
         /// </summary>
         [JsonProperty("pay_by_bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_by_bank")]
+#endif
         public PaymentMethodPayByBankOptions PayByBank { get; set; }
 
         /// <summary>
@@ -64,6 +88,9 @@ public class PaymentMethodUpdateOptions : BaseOptions, IHasMetadata
         /// US bank account payment method.
         /// </summary>
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public PaymentMethodUsBankAccountOptions UsBankAccount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PaymentMethods/PaymentMethodUsBankAccountOptions.cs b/src/Stripe.net/Services/PaymentMethods/PaymentMethodUsBankAccountOptions.cs
index 29b6bf18be..0de33724ac 100644
--- a/src/Stripe.net/Services/PaymentMethods/PaymentMethodUsBankAccountOptions.cs
+++ b/src/Stripe.net/Services/PaymentMethods/PaymentMethodUsBankAccountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PaymentMethodUsBankAccountOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class PaymentMethodUsBankAccountOptions : INestedOptions
         /// One of: <c>company</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("account_holder_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_type")]
+#endif
         public string AccountHolderType { get; set; }
 
         /// <summary>
         /// Account number of the bank account.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
@@ -23,18 +32,27 @@ public class PaymentMethodUsBankAccountOptions : INestedOptions
         /// One of: <c>checking</c>, or <c>savings</c>.
         /// </summary>
         [JsonProperty("account_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_type")]
+#endif
         public string AccountType { get; set; }
 
         /// <summary>
         /// The ID of a Financial Connections Account to use as a payment method.
         /// </summary>
         [JsonProperty("financial_connections_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_connections_account")]
+#endif
         public string FinancialConnectionsAccount { get; set; }
 
         /// <summary>
         /// Routing number of the bank account.
         /// </summary>
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Payouts/PayoutCreateOptions.cs b/src/Stripe.net/Services/Payouts/PayoutCreateOptions.cs
index 727ecfc027..69b7541130 100644
--- a/src/Stripe.net/Services/Payouts/PayoutCreateOptions.cs
+++ b/src/Stripe.net/Services/Payouts/PayoutCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PayoutCreateOptions : BaseOptions, IHasMetadata
     {
@@ -10,6 +13,9 @@ public class PayoutCreateOptions : BaseOptions, IHasMetadata
         /// A positive integer in cents representing how much to payout.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -18,12 +24,18 @@ public class PayoutCreateOptions : BaseOptions, IHasMetadata
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -31,6 +43,9 @@ public class PayoutCreateOptions : BaseOptions, IHasMetadata
         /// destination, we use the default external account for the specified currency.
         /// </summary>
         [JsonProperty("destination")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination")]
+#endif
         public string Destination { get; set; }
 
         /// <summary>
@@ -40,6 +55,9 @@ public class PayoutCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -51,6 +69,9 @@ public class PayoutCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>instant</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("method")]
+#endif
         public string Method { get; set; }
 
         /// <summary>
@@ -60,6 +81,9 @@ public class PayoutCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>bank_account</c>, <c>card</c>, or <c>fpx</c>.
         /// </summary>
         [JsonProperty("source_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source_type")]
+#endif
         public string SourceType { get; set; }
 
         /// <summary>
@@ -69,6 +93,9 @@ public class PayoutCreateOptions : BaseOptions, IHasMetadata
         /// display it at all.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Payouts/PayoutListOptions.cs b/src/Stripe.net/Services/Payouts/PayoutListOptions.cs
index d2a5a52d84..f20c0d55d8 100644
--- a/src/Stripe.net/Services/Payouts/PayoutListOptions.cs
+++ b/src/Stripe.net/Services/Payouts/PayoutListOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PayoutListOptions : ListOptionsWithCreated
     {
@@ -12,12 +15,19 @@ public class PayoutListOptions : ListOptionsWithCreated
         /// </summary>
         [JsonProperty("arrival_date")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("arrival_date")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, DateRangeOptions> ArrivalDate { get; set; }
 
         /// <summary>
         /// The ID of an external account - only return payouts sent to this external account.
         /// </summary>
         [JsonProperty("destination")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination")]
+#endif
         public string Destination { get; set; }
 
         /// <summary>
@@ -25,6 +35,9 @@ public class PayoutListOptions : ListOptionsWithCreated
         /// <c>failed</c>, or <c>canceled</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Payouts/PayoutReverseOptions.cs b/src/Stripe.net/Services/Payouts/PayoutReverseOptions.cs
index 28ebef557f..96dac0b073 100644
--- a/src/Stripe.net/Services/Payouts/PayoutReverseOptions.cs
+++ b/src/Stripe.net/Services/Payouts/PayoutReverseOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PayoutReverseOptions : BaseOptions, IHasMetadata
     {
@@ -13,6 +16,9 @@ public class PayoutReverseOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Payouts/PayoutService.cs b/src/Stripe.net/Services/Payouts/PayoutService.cs
index 7f9030dcc9..647c2d50e8 100644
--- a/src/Stripe.net/Services/Payouts/PayoutService.cs
+++ b/src/Stripe.net/Services/Payouts/PayoutService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class PayoutService : Service<Payout>,
+    public class PayoutService : Service,
         ICreatable<Payout, PayoutCreateOptions>,
         IListable<Payout, PayoutListOptions>,
         IRetrievable<Payout, PayoutGetOptions>,
diff --git a/src/Stripe.net/Services/Payouts/PayoutUpdateOptions.cs b/src/Stripe.net/Services/Payouts/PayoutUpdateOptions.cs
index ef3f6060e9..e6580e0549 100644
--- a/src/Stripe.net/Services/Payouts/PayoutUpdateOptions.cs
+++ b/src/Stripe.net/Services/Payouts/PayoutUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PayoutUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -13,6 +16,9 @@ public class PayoutUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Plans/PlanCreateOptions.cs b/src/Stripe.net/Services/Plans/PlanCreateOptions.cs
index 54573585f0..43214a98a6 100644
--- a/src/Stripe.net/Services/Plans/PlanCreateOptions.cs
+++ b/src/Stripe.net/Services/Plans/PlanCreateOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PlanCreateOptions : BaseOptions, IHasId, IHasMetadata
     {
@@ -11,6 +14,9 @@ public class PlanCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// Whether the plan is currently available for new subscriptions. Defaults to <c>true</c>.
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool? Active { get; set; }
 
         /// <summary>
@@ -23,6 +29,9 @@ public class PlanCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// One of: <c>last_during_period</c>, <c>last_ever</c>, <c>max</c>, or <c>sum</c>.
         /// </summary>
         [JsonProperty("aggregate_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("aggregate_usage")]
+#endif
         public string AggregateUsage { get; set; }
 
         /// <summary>
@@ -30,6 +39,9 @@ public class PlanCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// how much to charge on a recurring basis.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -37,6 +49,9 @@ public class PlanCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// one of <c>amount</c> and <c>amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_decimal")]
+#endif
         public decimal? AmountDecimal { get; set; }
 
         /// <summary>
@@ -49,6 +64,9 @@ public class PlanCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// One of: <c>per_unit</c>, or <c>tiered</c>.
         /// </summary>
         [JsonProperty("billing_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_scheme")]
+#endif
         public string BillingScheme { get; set; }
 
         /// <summary>
@@ -57,6 +75,9 @@ public class PlanCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -66,6 +87,9 @@ public class PlanCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// test modes.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
@@ -74,6 +98,9 @@ public class PlanCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// One of: <c>day</c>, <c>month</c>, <c>week</c>, or <c>year</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
 
         /// <summary>
@@ -82,6 +109,9 @@ public class PlanCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// years interval allowed (3 years, 36 months, or 156 weeks).
         /// </summary>
         [JsonProperty("interval_count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_count")]
+#endif
         public long? IntervalCount { get; set; }
 
         /// <summary>
@@ -91,22 +121,35 @@ public class PlanCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The meter tracking the usage of a metered price.
         /// </summary>
         [JsonProperty("meter")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("meter")]
+#endif
         public string Meter { get; set; }
 
         /// <summary>
         /// A brief description of the plan, hidden from customers.
         /// </summary>
         [JsonProperty("nickname")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("nickname")]
+#endif
         public string Nickname { get; set; }
 
         [JsonProperty("product")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<string, PlanProductOptions> Product { get; set; }
 
         /// <summary>
@@ -114,6 +157,9 @@ public class PlanCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// be set to <c>tiered</c>. See also the documentation for <c>billing_scheme</c>.
         /// </summary>
         [JsonProperty("tiers")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tiers")]
+#endif
         public List<PlanTierOptions> Tiers { get; set; }
 
         /// <summary>
@@ -124,6 +170,9 @@ public class PlanCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// One of: <c>graduated</c>, or <c>volume</c>.
         /// </summary>
         [JsonProperty("tiers_mode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tiers_mode")]
+#endif
         public string TiersMode { get; set; }
 
         /// <summary>
@@ -131,6 +180,9 @@ public class PlanCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// price. Cannot be combined with <c>tiers</c>.
         /// </summary>
         [JsonProperty("transform_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transform_usage")]
+#endif
         public PlanTransformUsageOptions TransformUsage { get; set; }
 
         /// <summary>
@@ -138,6 +190,9 @@ public class PlanCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// href="https://stripe.com/docs/api#create_subscription-trial_from_plan"><c>trial_from_plan=true</c></a>.
         /// </summary>
         [JsonProperty("trial_period_days")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_period_days")]
+#endif
         public long? TrialPeriodDays { get; set; }
 
         /// <summary>
@@ -148,6 +203,9 @@ public class PlanCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// One of: <c>licensed</c>, or <c>metered</c>.
         /// </summary>
         [JsonProperty("usage_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("usage_type")]
+#endif
         public string UsageType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Plans/PlanListOptions.cs b/src/Stripe.net/Services/Plans/PlanListOptions.cs
index d795a4801a..5928bee29d 100644
--- a/src/Stripe.net/Services/Plans/PlanListOptions.cs
+++ b/src/Stripe.net/Services/Plans/PlanListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PlanListOptions : ListOptionsWithCreated
     {
@@ -10,12 +13,18 @@ public class PlanListOptions : ListOptionsWithCreated
         /// inactive plans).
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool? Active { get; set; }
 
         /// <summary>
         /// Only return plans for the given product.
         /// </summary>
         [JsonProperty("product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product")]
+#endif
         public string Product { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Plans/PlanProductOptions.cs b/src/Stripe.net/Services/Plans/PlanProductOptions.cs
index 887ef3e685..69216835f5 100644
--- a/src/Stripe.net/Services/Plans/PlanProductOptions.cs
+++ b/src/Stripe.net/Services/Plans/PlanProductOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PlanProductOptions : INestedOptions, IHasId, IHasMetadata
     {
@@ -10,6 +13,9 @@ public class PlanProductOptions : INestedOptions, IHasId, IHasMetadata
         /// Whether the product is currently available for purchase. Defaults to <c>true</c>.
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool? Active { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PlanProductOptions : INestedOptions, IHasId, IHasMetadata
         /// randomly generated.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
@@ -26,12 +35,18 @@ public class PlanProductOptions : INestedOptions, IHasId, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The product's name, meant to be displayable to the customer.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -44,12 +59,18 @@ public class PlanProductOptions : INestedOptions, IHasId, IHasMetadata
         /// statement in capital letters. Non-ASCII characters are automatically stripped.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
 
         /// <summary>
         /// A <a href="https://stripe.com/docs/tax/tax-categories">tax code</a> ID.
         /// </summary>
         [JsonProperty("tax_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_code")]
+#endif
         public string TaxCode { get; set; }
 
         /// <summary>
@@ -57,6 +78,9 @@ public class PlanProductOptions : INestedOptions, IHasId, IHasMetadata
         /// customers' receipts, invoices, Checkout, and the customer portal.
         /// </summary>
         [JsonProperty("unit_label")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_label")]
+#endif
         public string UnitLabel { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Plans/PlanService.cs b/src/Stripe.net/Services/Plans/PlanService.cs
index 504a222f9b..3434b9987f 100644
--- a/src/Stripe.net/Services/Plans/PlanService.cs
+++ b/src/Stripe.net/Services/Plans/PlanService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class PlanService : Service<Plan>,
+    public class PlanService : Service,
         ICreatable<Plan, PlanCreateOptions>,
         IDeletable<Plan, PlanDeleteOptions>,
         IListable<Plan, PlanListOptions>,
diff --git a/src/Stripe.net/Services/Plans/PlanTierOptions.cs b/src/Stripe.net/Services/Plans/PlanTierOptions.cs
index 1818801ab3..d4533fc2d3 100644
--- a/src/Stripe.net/Services/Plans/PlanTierOptions.cs
+++ b/src/Stripe.net/Services/Plans/PlanTierOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PlanTierOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class PlanTierOptions : INestedOptions
         /// tier.
         /// </summary>
         [JsonProperty("flat_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flat_amount")]
+#endif
         public long? FlatAmount { get; set; }
 
         /// <summary>
@@ -19,12 +25,18 @@ public class PlanTierOptions : INestedOptions
         /// <c>flat_amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("flat_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flat_amount_decimal")]
+#endif
         public decimal? FlatAmountDecimal { get; set; }
 
         /// <summary>
         /// The per unit billing amount for each individual unit for which this tier applies.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
@@ -33,6 +45,9 @@ public class PlanTierOptions : INestedOptions
         /// <c>unit_amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
 
         /// <summary>
@@ -41,6 +56,10 @@ public class PlanTierOptions : INestedOptions
         /// </summary>
         [JsonProperty("up_to")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("up_to")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<long?, PlanTierUpTo> UpTo { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Plans/PlanTransformUsageOptions.cs b/src/Stripe.net/Services/Plans/PlanTransformUsageOptions.cs
index d0124b517f..55b57589fb 100644
--- a/src/Stripe.net/Services/Plans/PlanTransformUsageOptions.cs
+++ b/src/Stripe.net/Services/Plans/PlanTransformUsageOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PlanTransformUsageOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PlanTransformUsageOptions : INestedOptions
         /// Divide usage by this number.
         /// </summary>
         [JsonProperty("divide_by")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("divide_by")]
+#endif
         public long? DivideBy { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class PlanTransformUsageOptions : INestedOptions
         /// One of: <c>down</c>, or <c>up</c>.
         /// </summary>
         [JsonProperty("round")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("round")]
+#endif
         public string Round { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Plans/PlanUpdateOptions.cs b/src/Stripe.net/Services/Plans/PlanUpdateOptions.cs
index 55ff66c37b..430457ba7f 100644
--- a/src/Stripe.net/Services/Plans/PlanUpdateOptions.cs
+++ b/src/Stripe.net/Services/Plans/PlanUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PlanUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -10,6 +13,9 @@ public class PlanUpdateOptions : BaseOptions, IHasMetadata
         /// Whether the plan is currently available for new subscriptions.
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool? Active { get; set; }
 
         /// <summary>
@@ -19,12 +25,18 @@ public class PlanUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// A brief description of the plan, hidden from customers.
         /// </summary>
         [JsonProperty("nickname")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("nickname")]
+#endif
         public string Nickname { get; set; }
 
         /// <summary>
@@ -32,6 +44,9 @@ public class PlanUpdateOptions : BaseOptions, IHasMetadata
         /// subscription or subscription schedule.
         /// </summary>
         [JsonProperty("product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product")]
+#endif
         public string Product { get; set; }
 
         /// <summary>
@@ -39,6 +54,9 @@ public class PlanUpdateOptions : BaseOptions, IHasMetadata
         /// href="https://stripe.com/docs/api#create_subscription-trial_from_plan"><c>trial_from_plan=true</c></a>.
         /// </summary>
         [JsonProperty("trial_period_days")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_period_days")]
+#endif
         public long? TrialPeriodDays { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Prices/PriceCreateOptions.cs b/src/Stripe.net/Services/Prices/PriceCreateOptions.cs
index 7fd1658bb9..3b69427285 100644
--- a/src/Stripe.net/Services/Prices/PriceCreateOptions.cs
+++ b/src/Stripe.net/Services/Prices/PriceCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PriceCreateOptions : BaseOptions, IHasMetadata
     {
@@ -10,6 +13,9 @@ public class PriceCreateOptions : BaseOptions, IHasMetadata
         /// Whether the price can be used for new purchases. Defaults to <c>true</c>.
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool? Active { get; set; }
 
         /// <summary>
@@ -23,6 +29,9 @@ public class PriceCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>per_unit</c>, or <c>tiered</c>.
         /// </summary>
         [JsonProperty("billing_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_scheme")]
+#endif
         public string BillingScheme { get; set; }
 
         /// <summary>
@@ -31,6 +40,9 @@ public class PriceCreateOptions : BaseOptions, IHasMetadata
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -39,6 +51,9 @@ public class PriceCreateOptions : BaseOptions, IHasMetadata
         /// href="https://stripe.com/docs/currencies">supported currency</a>.
         /// </summary>
         [JsonProperty("currency_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency_options")]
+#endif
         public Dictionary<string, PriceCurrencyOptionsOptions> CurrencyOptions { get; set; }
 
         /// <summary>
@@ -46,6 +61,9 @@ public class PriceCreateOptions : BaseOptions, IHasMetadata
         /// Checkout Sessions and Payment Links.
         /// </summary>
         [JsonProperty("custom_unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_unit_amount")]
+#endif
         public PriceCustomUnitAmountOptions CustomUnitAmount { get; set; }
 
         /// <summary>
@@ -53,6 +71,9 @@ public class PriceCreateOptions : BaseOptions, IHasMetadata
         /// 200 characters.
         /// </summary>
         [JsonProperty("lookup_key")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lookup_key")]
+#endif
         public string LookupKey { get; set; }
 
         /// <summary>
@@ -62,30 +83,45 @@ public class PriceCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// A brief description of the price, hidden from customers.
         /// </summary>
         [JsonProperty("nickname")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("nickname")]
+#endif
         public string Nickname { get; set; }
 
         /// <summary>
         /// The ID of the product that this price will belong to.
         /// </summary>
         [JsonProperty("product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product")]
+#endif
         public string Product { get; set; }
 
         /// <summary>
         /// These fields can be used to create a new product that this price will belong to.
         /// </summary>
         [JsonProperty("product_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product_data")]
+#endif
         public PriceProductDataOptions ProductData { get; set; }
 
         /// <summary>
         /// The recurring components of a price such as <c>interval</c> and <c>usage_type</c>.
         /// </summary>
         [JsonProperty("recurring")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("recurring")]
+#endif
         public PriceRecurringOptions Recurring { get; set; }
 
         /// <summary>
@@ -98,6 +134,9 @@ public class PriceCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
@@ -105,6 +144,9 @@ public class PriceCreateOptions : BaseOptions, IHasMetadata
         /// be set to <c>tiered</c>. See also the documentation for <c>billing_scheme</c>.
         /// </summary>
         [JsonProperty("tiers")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tiers")]
+#endif
         public List<PriceTierOptions> Tiers { get; set; }
 
         /// <summary>
@@ -115,6 +157,9 @@ public class PriceCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>graduated</c>, or <c>volume</c>.
         /// </summary>
         [JsonProperty("tiers_mode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tiers_mode")]
+#endif
         public string TiersMode { get; set; }
 
         /// <summary>
@@ -122,6 +167,9 @@ public class PriceCreateOptions : BaseOptions, IHasMetadata
         /// assign it to this price.
         /// </summary>
         [JsonProperty("transfer_lookup_key")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_lookup_key")]
+#endif
         public bool? TransferLookupKey { get; set; }
 
         /// <summary>
@@ -129,6 +177,9 @@ public class PriceCreateOptions : BaseOptions, IHasMetadata
         /// price. Cannot be combined with <c>tiers</c>.
         /// </summary>
         [JsonProperty("transform_quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transform_quantity")]
+#endif
         public PriceTransformQuantityOptions TransformQuantity { get; set; }
 
         /// <summary>
@@ -137,6 +188,9 @@ public class PriceCreateOptions : BaseOptions, IHasMetadata
         /// <c>custom_unit_amount</c> is required, unless <c>billing_scheme=tiered</c>.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
@@ -145,6 +199,9 @@ public class PriceCreateOptions : BaseOptions, IHasMetadata
         /// <c>unit_amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Prices/PriceCurrencyOptionsCustomUnitAmountOptions.cs b/src/Stripe.net/Services/Prices/PriceCurrencyOptionsCustomUnitAmountOptions.cs
index 4b05583d88..3fe1289d5d 100644
--- a/src/Stripe.net/Services/Prices/PriceCurrencyOptionsCustomUnitAmountOptions.cs
+++ b/src/Stripe.net/Services/Prices/PriceCurrencyOptionsCustomUnitAmountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PriceCurrencyOptionsCustomUnitAmountOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class PriceCurrencyOptionsCustomUnitAmountOptions : INestedOptions
         /// <c>custom_unit_amount</c>.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
         /// The maximum unit amount the customer can specify for this item.
         /// </summary>
         [JsonProperty("maximum")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("maximum")]
+#endif
         public long? Maximum { get; set; }
 
         /// <summary>
@@ -23,12 +32,18 @@ public class PriceCurrencyOptionsCustomUnitAmountOptions : INestedOptions
         /// minimum charge amount.
         /// </summary>
         [JsonProperty("minimum")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("minimum")]
+#endif
         public long? Minimum { get; set; }
 
         /// <summary>
         /// The starting unit amount which can be updated by the customer.
         /// </summary>
         [JsonProperty("preset")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preset")]
+#endif
         public long? Preset { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Prices/PriceCurrencyOptionsOptions.cs b/src/Stripe.net/Services/Prices/PriceCurrencyOptionsOptions.cs
index 0dc7657e8b..c522d49265 100644
--- a/src/Stripe.net/Services/Prices/PriceCurrencyOptionsOptions.cs
+++ b/src/Stripe.net/Services/Prices/PriceCurrencyOptionsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PriceCurrencyOptionsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class PriceCurrencyOptionsOptions : INestedOptions
         /// Checkout Sessions and Payment Links.
         /// </summary>
         [JsonProperty("custom_unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_unit_amount")]
+#endif
         public PriceCurrencyOptionsCustomUnitAmountOptions CustomUnitAmount { get; set; }
 
         /// <summary>
@@ -23,6 +29,9 @@ public class PriceCurrencyOptionsOptions : INestedOptions
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
@@ -30,6 +39,9 @@ public class PriceCurrencyOptionsOptions : INestedOptions
         /// be set to <c>tiered</c>. See also the documentation for <c>billing_scheme</c>.
         /// </summary>
         [JsonProperty("tiers")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tiers")]
+#endif
         public List<PriceCurrencyOptionsTierOptions> Tiers { get; set; }
 
         /// <summary>
@@ -37,6 +49,9 @@ public class PriceCurrencyOptionsOptions : INestedOptions
         /// how much to charge.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
@@ -45,6 +60,9 @@ public class PriceCurrencyOptionsOptions : INestedOptions
         /// <c>unit_amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Prices/PriceCurrencyOptionsTierOptions.cs b/src/Stripe.net/Services/Prices/PriceCurrencyOptionsTierOptions.cs
index 0e8d2b226f..2c8ae3f921 100644
--- a/src/Stripe.net/Services/Prices/PriceCurrencyOptionsTierOptions.cs
+++ b/src/Stripe.net/Services/Prices/PriceCurrencyOptionsTierOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PriceCurrencyOptionsTierOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class PriceCurrencyOptionsTierOptions : INestedOptions
         /// tier.
         /// </summary>
         [JsonProperty("flat_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flat_amount")]
+#endif
         public long? FlatAmount { get; set; }
 
         /// <summary>
@@ -19,12 +25,18 @@ public class PriceCurrencyOptionsTierOptions : INestedOptions
         /// <c>flat_amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("flat_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flat_amount_decimal")]
+#endif
         public decimal? FlatAmountDecimal { get; set; }
 
         /// <summary>
         /// The per unit billing amount for each individual unit for which this tier applies.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
@@ -33,6 +45,9 @@ public class PriceCurrencyOptionsTierOptions : INestedOptions
         /// <c>unit_amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
 
         /// <summary>
@@ -41,6 +56,10 @@ public class PriceCurrencyOptionsTierOptions : INestedOptions
         /// </summary>
         [JsonProperty("up_to")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("up_to")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<long?, PriceTierUpTo> UpTo { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Prices/PriceCustomUnitAmountOptions.cs b/src/Stripe.net/Services/Prices/PriceCustomUnitAmountOptions.cs
index 9552dd1286..f3cf45832c 100644
--- a/src/Stripe.net/Services/Prices/PriceCustomUnitAmountOptions.cs
+++ b/src/Stripe.net/Services/Prices/PriceCustomUnitAmountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PriceCustomUnitAmountOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class PriceCustomUnitAmountOptions : INestedOptions
         /// <c>custom_unit_amount</c>.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
         /// The maximum unit amount the customer can specify for this item.
         /// </summary>
         [JsonProperty("maximum")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("maximum")]
+#endif
         public long? Maximum { get; set; }
 
         /// <summary>
@@ -23,12 +32,18 @@ public class PriceCustomUnitAmountOptions : INestedOptions
         /// minimum charge amount.
         /// </summary>
         [JsonProperty("minimum")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("minimum")]
+#endif
         public long? Minimum { get; set; }
 
         /// <summary>
         /// The starting unit amount which can be updated by the customer.
         /// </summary>
         [JsonProperty("preset")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preset")]
+#endif
         public long? Preset { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Prices/PriceListOptions.cs b/src/Stripe.net/Services/Prices/PriceListOptions.cs
index 1bbbe6afd8..969c46e87c 100644
--- a/src/Stripe.net/Services/Prices/PriceListOptions.cs
+++ b/src/Stripe.net/Services/Prices/PriceListOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PriceListOptions : ListOptionsWithCreated
     {
@@ -11,12 +14,18 @@ public class PriceListOptions : ListOptionsWithCreated
         /// inactive prices).
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool? Active { get; set; }
 
         /// <summary>
         /// Only return prices for the given currency.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -24,18 +33,27 @@ public class PriceListOptions : ListOptionsWithCreated
         /// lookup_keys.
         /// </summary>
         [JsonProperty("lookup_keys")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lookup_keys")]
+#endif
         public List<string> LookupKeys { get; set; }
 
         /// <summary>
         /// Only return prices for the given product.
         /// </summary>
         [JsonProperty("product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product")]
+#endif
         public string Product { get; set; }
 
         /// <summary>
         /// Only return prices with these recurring fields.
         /// </summary>
         [JsonProperty("recurring")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("recurring")]
+#endif
         public PriceRecurringListOptions Recurring { get; set; }
 
         /// <summary>
@@ -43,6 +61,9 @@ public class PriceListOptions : ListOptionsWithCreated
         /// One of: <c>one_time</c>, or <c>recurring</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Prices/PriceProductDataOptions.cs b/src/Stripe.net/Services/Prices/PriceProductDataOptions.cs
index d4793828b3..88b15646f4 100644
--- a/src/Stripe.net/Services/Prices/PriceProductDataOptions.cs
+++ b/src/Stripe.net/Services/Prices/PriceProductDataOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PriceProductDataOptions : INestedOptions, IHasId, IHasMetadata
     {
@@ -10,6 +13,9 @@ public class PriceProductDataOptions : INestedOptions, IHasId, IHasMetadata
         /// Whether the product is currently available for purchase. Defaults to <c>true</c>.
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool? Active { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class PriceProductDataOptions : INestedOptions, IHasId, IHasMetadata
         /// randomly generated.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
@@ -26,12 +35,18 @@ public class PriceProductDataOptions : INestedOptions, IHasId, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The product's name, meant to be displayable to the customer.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -44,12 +59,18 @@ public class PriceProductDataOptions : INestedOptions, IHasId, IHasMetadata
         /// statement in capital letters. Non-ASCII characters are automatically stripped.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
 
         /// <summary>
         /// A <a href="https://stripe.com/docs/tax/tax-categories">tax code</a> ID.
         /// </summary>
         [JsonProperty("tax_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_code")]
+#endif
         public string TaxCode { get; set; }
 
         /// <summary>
@@ -57,6 +78,9 @@ public class PriceProductDataOptions : INestedOptions, IHasId, IHasMetadata
         /// customers' receipts, invoices, Checkout, and the customer portal.
         /// </summary>
         [JsonProperty("unit_label")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_label")]
+#endif
         public string UnitLabel { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Prices/PriceRecurringListOptions.cs b/src/Stripe.net/Services/Prices/PriceRecurringListOptions.cs
index 8812f7b22a..0bc9e030d6 100644
--- a/src/Stripe.net/Services/Prices/PriceRecurringListOptions.cs
+++ b/src/Stripe.net/Services/Prices/PriceRecurringListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PriceRecurringListOptions : INestedOptions
     {
@@ -11,12 +14,18 @@ public class PriceRecurringListOptions : INestedOptions
         /// One of: <c>day</c>, <c>month</c>, <c>week</c>, or <c>year</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
 
         /// <summary>
         /// Filter by the price's meter.
         /// </summary>
         [JsonProperty("meter")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("meter")]
+#endif
         public string Meter { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class PriceRecurringListOptions : INestedOptions
         /// One of: <c>licensed</c>, or <c>metered</c>.
         /// </summary>
         [JsonProperty("usage_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("usage_type")]
+#endif
         public string UsageType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Prices/PriceRecurringOptions.cs b/src/Stripe.net/Services/Prices/PriceRecurringOptions.cs
index 1fd03dba8a..b093d92fec 100644
--- a/src/Stripe.net/Services/Prices/PriceRecurringOptions.cs
+++ b/src/Stripe.net/Services/Prices/PriceRecurringOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PriceRecurringOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class PriceRecurringOptions : INestedOptions
         /// One of: <c>last_during_period</c>, <c>last_ever</c>, <c>max</c>, or <c>sum</c>.
         /// </summary>
         [JsonProperty("aggregate_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("aggregate_usage")]
+#endif
         public string AggregateUsage { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class PriceRecurringOptions : INestedOptions
         /// One of: <c>day</c>, <c>month</c>, <c>week</c>, or <c>year</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
 
         /// <summary>
@@ -27,12 +36,18 @@ public class PriceRecurringOptions : INestedOptions
         /// years interval allowed (3 years, 36 months, or 156 weeks).
         /// </summary>
         [JsonProperty("interval_count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_count")]
+#endif
         public long? IntervalCount { get; set; }
 
         /// <summary>
         /// The meter tracking the usage of a metered price.
         /// </summary>
         [JsonProperty("meter")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("meter")]
+#endif
         public string Meter { get; set; }
 
         /// <summary>
@@ -40,6 +55,9 @@ public class PriceRecurringOptions : INestedOptions
         /// href="https://stripe.com/docs/api#create_subscription-trial_from_plan"><c>trial_from_plan=true</c></a>.
         /// </summary>
         [JsonProperty("trial_period_days")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_period_days")]
+#endif
         public long? TrialPeriodDays { get; set; }
 
         /// <summary>
@@ -50,6 +68,9 @@ public class PriceRecurringOptions : INestedOptions
         /// One of: <c>licensed</c>, or <c>metered</c>.
         /// </summary>
         [JsonProperty("usage_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("usage_type")]
+#endif
         public string UsageType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Prices/PriceService.cs b/src/Stripe.net/Services/Prices/PriceService.cs
index 3cde7f71ef..7b70982a49 100644
--- a/src/Stripe.net/Services/Prices/PriceService.cs
+++ b/src/Stripe.net/Services/Prices/PriceService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class PriceService : Service<Price>,
+    public class PriceService : Service,
         ICreatable<Price, PriceCreateOptions>,
         IListable<Price, PriceListOptions>,
         IRetrievable<Price, PriceGetOptions>,
diff --git a/src/Stripe.net/Services/Prices/PriceTierOptions.cs b/src/Stripe.net/Services/Prices/PriceTierOptions.cs
index cbfa15ca23..64bc70f170 100644
--- a/src/Stripe.net/Services/Prices/PriceTierOptions.cs
+++ b/src/Stripe.net/Services/Prices/PriceTierOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PriceTierOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class PriceTierOptions : INestedOptions
         /// tier.
         /// </summary>
         [JsonProperty("flat_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flat_amount")]
+#endif
         public long? FlatAmount { get; set; }
 
         /// <summary>
@@ -19,12 +25,18 @@ public class PriceTierOptions : INestedOptions
         /// <c>flat_amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("flat_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flat_amount_decimal")]
+#endif
         public decimal? FlatAmountDecimal { get; set; }
 
         /// <summary>
         /// The per unit billing amount for each individual unit for which this tier applies.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
@@ -33,6 +45,9 @@ public class PriceTierOptions : INestedOptions
         /// <c>unit_amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
 
         /// <summary>
@@ -41,6 +56,10 @@ public class PriceTierOptions : INestedOptions
         /// </summary>
         [JsonProperty("up_to")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("up_to")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<long?, PriceTierUpTo> UpTo { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Prices/PriceTransformQuantityOptions.cs b/src/Stripe.net/Services/Prices/PriceTransformQuantityOptions.cs
index 450fbe89b4..e29ac8a4a2 100644
--- a/src/Stripe.net/Services/Prices/PriceTransformQuantityOptions.cs
+++ b/src/Stripe.net/Services/Prices/PriceTransformQuantityOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PriceTransformQuantityOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class PriceTransformQuantityOptions : INestedOptions
         /// Divide usage by this number.
         /// </summary>
         [JsonProperty("divide_by")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("divide_by")]
+#endif
         public long? DivideBy { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class PriceTransformQuantityOptions : INestedOptions
         /// One of: <c>down</c>, or <c>up</c>.
         /// </summary>
         [JsonProperty("round")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("round")]
+#endif
         public string Round { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Prices/PriceTransformUsageOptions.cs b/src/Stripe.net/Services/Prices/PriceTransformUsageOptions.cs
index a8f56bcb12..c4860f08a2 100644
--- a/src/Stripe.net/Services/Prices/PriceTransformUsageOptions.cs
+++ b/src/Stripe.net/Services/Prices/PriceTransformUsageOptions.cs
@@ -1,13 +1,22 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PriceTransformUsageOptions : INestedOptions
     {
         [JsonProperty("divide_by")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("divide_by")]
+#endif
         public long? DivideBy { get; set; }
 
         [JsonProperty("round")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("round")]
+#endif
         public string Round { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Prices/PriceUpdateOptions.cs b/src/Stripe.net/Services/Prices/PriceUpdateOptions.cs
index 8cd8632907..690c1794ec 100644
--- a/src/Stripe.net/Services/Prices/PriceUpdateOptions.cs
+++ b/src/Stripe.net/Services/Prices/PriceUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PriceUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -10,6 +13,9 @@ public class PriceUpdateOptions : BaseOptions, IHasMetadata
         /// Whether the price can be used for new purchases. Defaults to <c>true</c>.
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool? Active { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class PriceUpdateOptions : BaseOptions, IHasMetadata
         /// href="https://stripe.com/docs/currencies">supported currency</a>.
         /// </summary>
         [JsonProperty("currency_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency_options")]
+#endif
         public Dictionary<string, PriceCurrencyOptionsOptions> CurrencyOptions { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class PriceUpdateOptions : BaseOptions, IHasMetadata
         /// 200 characters.
         /// </summary>
         [JsonProperty("lookup_key")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lookup_key")]
+#endif
         public string LookupKey { get; set; }
 
         /// <summary>
@@ -34,12 +46,18 @@ public class PriceUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// A brief description of the price, hidden from customers.
         /// </summary>
         [JsonProperty("nickname")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("nickname")]
+#endif
         public string Nickname { get; set; }
 
         /// <summary>
@@ -52,6 +70,9 @@ public class PriceUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
@@ -59,6 +80,9 @@ public class PriceUpdateOptions : BaseOptions, IHasMetadata
         /// assign it to this price.
         /// </summary>
         [JsonProperty("transfer_lookup_key")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_lookup_key")]
+#endif
         public bool? TransferLookupKey { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/ProductFeatures/ProductFeatureCreateOptions.cs b/src/Stripe.net/Services/ProductFeatures/ProductFeatureCreateOptions.cs
index f388518b98..cebbe523e8 100644
--- a/src/Stripe.net/Services/ProductFeatures/ProductFeatureCreateOptions.cs
+++ b/src/Stripe.net/Services/ProductFeatures/ProductFeatureCreateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ProductFeatureCreateOptions : BaseOptions
     {
@@ -10,6 +13,9 @@ public class ProductFeatureCreateOptions : BaseOptions
         /// object attached to this product.
         /// </summary>
         [JsonProperty("entitlement_feature")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("entitlement_feature")]
+#endif
         public string EntitlementFeature { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/ProductFeatures/ProductFeatureService.cs b/src/Stripe.net/Services/ProductFeatures/ProductFeatureService.cs
index 3efdeff9a7..730cda2bdf 100644
--- a/src/Stripe.net/Services/ProductFeatures/ProductFeatureService.cs
+++ b/src/Stripe.net/Services/ProductFeatures/ProductFeatureService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class ProductFeatureService : ServiceNested<ProductFeature>,
+    public class ProductFeatureService : Service,
         INestedCreatable<ProductFeature, ProductFeatureCreateOptions>,
         INestedDeletable<ProductFeature, ProductFeatureDeleteOptions>,
         INestedListable<ProductFeature, ProductFeatureListOptions>,
diff --git a/src/Stripe.net/Services/Products/PackageDimensionOptions.cs b/src/Stripe.net/Services/Products/PackageDimensionOptions.cs
index 1983aad6e2..38599051cf 100644
--- a/src/Stripe.net/Services/Products/PackageDimensionOptions.cs
+++ b/src/Stripe.net/Services/Products/PackageDimensionOptions.cs
@@ -2,19 +2,34 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PackageDimensionOptions : INestedOptions
     {
         [JsonProperty("height")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("height")]
+#endif
         public decimal? Height { get; set; }
 
         [JsonProperty("length")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("length")]
+#endif
         public decimal? Length { get; set; }
 
         [JsonProperty("weight")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("weight")]
+#endif
         public decimal? Weight { get; set; }
 
         [JsonProperty("width")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("width")]
+#endif
         public decimal? Width { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Products/ProductCreateOptions.cs b/src/Stripe.net/Services/Products/ProductCreateOptions.cs
index 50dacf49e0..8089f4db4f 100644
--- a/src/Stripe.net/Services/Products/ProductCreateOptions.cs
+++ b/src/Stripe.net/Services/Products/ProductCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ProductCreateOptions : BaseOptions, IHasId, IHasMetadata
     {
@@ -10,6 +13,9 @@ public class ProductCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// Whether the product is currently available for purchase. Defaults to <c>true</c>.
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool? Active { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class ProductCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// object. This Price will be set as the default price for this product.
         /// </summary>
         [JsonProperty("default_price_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_price_data")]
+#endif
         public ProductDefaultPriceDataOptions DefaultPriceData { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class ProductCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// rendering purposes.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -32,6 +44,9 @@ public class ProductCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// but the ID must be unique across all products in your Stripe account.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
@@ -39,6 +54,9 @@ public class ProductCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// customer.
         /// </summary>
         [JsonProperty("images")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("images")]
+#endif
         public List<string> Images { get; set; }
 
         /// <summary>
@@ -46,6 +64,9 @@ public class ProductCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// href="https://stripe.com/docs/payments/checkout/pricing-table">pricing tables</a>.
         /// </summary>
         [JsonProperty("marketing_features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("marketing_features")]
+#endif
         public List<ProductMarketingFeatureOptions> MarketingFeatures { get; set; }
 
         /// <summary>
@@ -55,24 +76,36 @@ public class ProductCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The product's name, meant to be displayable to the customer.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// The dimensions of this product for shipping purposes.
         /// </summary>
         [JsonProperty("package_dimensions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("package_dimensions")]
+#endif
         public ProductPackageDimensionsOptions PackageDimensions { get; set; }
 
         /// <summary>
         /// Whether this product is shipped (i.e., physical goods).
         /// </summary>
         [JsonProperty("shippable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shippable")]
+#endif
         public bool? Shippable { get; set; }
 
         /// <summary>
@@ -86,12 +119,18 @@ public class ProductCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// contain at least one letter. Only used for subscription payments.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
 
         /// <summary>
         /// A <a href="https://stripe.com/docs/tax/tax-categories">tax code</a> ID.
         /// </summary>
         [JsonProperty("tax_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_code")]
+#endif
         public string TaxCode { get; set; }
 
         /// <summary>
@@ -102,6 +141,9 @@ public class ProductCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// One of: <c>good</c>, or <c>service</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
@@ -109,12 +151,18 @@ public class ProductCreateOptions : BaseOptions, IHasId, IHasMetadata
         /// customers' receipts, invoices, Checkout, and the customer portal.
         /// </summary>
         [JsonProperty("unit_label")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_label")]
+#endif
         public string UnitLabel { get; set; }
 
         /// <summary>
         /// A URL of a publicly-accessible webpage for this product.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Products/ProductDefaultPriceDataCurrencyOptionsCustomUnitAmountOptions.cs b/src/Stripe.net/Services/Products/ProductDefaultPriceDataCurrencyOptionsCustomUnitAmountOptions.cs
index af436a3e18..8346546d1d 100644
--- a/src/Stripe.net/Services/Products/ProductDefaultPriceDataCurrencyOptionsCustomUnitAmountOptions.cs
+++ b/src/Stripe.net/Services/Products/ProductDefaultPriceDataCurrencyOptionsCustomUnitAmountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ProductDefaultPriceDataCurrencyOptionsCustomUnitAmountOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class ProductDefaultPriceDataCurrencyOptionsCustomUnitAmountOptions : INe
         /// <c>custom_unit_amount</c>.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
         /// The maximum unit amount the customer can specify for this item.
         /// </summary>
         [JsonProperty("maximum")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("maximum")]
+#endif
         public long? Maximum { get; set; }
 
         /// <summary>
@@ -23,12 +32,18 @@ public class ProductDefaultPriceDataCurrencyOptionsCustomUnitAmountOptions : INe
         /// minimum charge amount.
         /// </summary>
         [JsonProperty("minimum")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("minimum")]
+#endif
         public long? Minimum { get; set; }
 
         /// <summary>
         /// The starting unit amount which can be updated by the customer.
         /// </summary>
         [JsonProperty("preset")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preset")]
+#endif
         public long? Preset { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Products/ProductDefaultPriceDataCurrencyOptionsOptions.cs b/src/Stripe.net/Services/Products/ProductDefaultPriceDataCurrencyOptionsOptions.cs
index 03ed7f94ac..4d7c7e41e2 100644
--- a/src/Stripe.net/Services/Products/ProductDefaultPriceDataCurrencyOptionsOptions.cs
+++ b/src/Stripe.net/Services/Products/ProductDefaultPriceDataCurrencyOptionsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ProductDefaultPriceDataCurrencyOptionsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class ProductDefaultPriceDataCurrencyOptionsOptions : INestedOptions
         /// Checkout Sessions and Payment Links.
         /// </summary>
         [JsonProperty("custom_unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_unit_amount")]
+#endif
         public ProductDefaultPriceDataCurrencyOptionsCustomUnitAmountOptions CustomUnitAmount { get; set; }
 
         /// <summary>
@@ -23,6 +29,9 @@ public class ProductDefaultPriceDataCurrencyOptionsOptions : INestedOptions
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
@@ -30,6 +39,9 @@ public class ProductDefaultPriceDataCurrencyOptionsOptions : INestedOptions
         /// be set to <c>tiered</c>. See also the documentation for <c>billing_scheme</c>.
         /// </summary>
         [JsonProperty("tiers")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tiers")]
+#endif
         public List<ProductDefaultPriceDataCurrencyOptionsTierOptions> Tiers { get; set; }
 
         /// <summary>
@@ -37,6 +49,9 @@ public class ProductDefaultPriceDataCurrencyOptionsOptions : INestedOptions
         /// how much to charge.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
@@ -45,6 +60,9 @@ public class ProductDefaultPriceDataCurrencyOptionsOptions : INestedOptions
         /// <c>unit_amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Products/ProductDefaultPriceDataCurrencyOptionsTierOptions.cs b/src/Stripe.net/Services/Products/ProductDefaultPriceDataCurrencyOptionsTierOptions.cs
index 7b1d8983ed..110b3c7823 100644
--- a/src/Stripe.net/Services/Products/ProductDefaultPriceDataCurrencyOptionsTierOptions.cs
+++ b/src/Stripe.net/Services/Products/ProductDefaultPriceDataCurrencyOptionsTierOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ProductDefaultPriceDataCurrencyOptionsTierOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class ProductDefaultPriceDataCurrencyOptionsTierOptions : INestedOptions
         /// tier.
         /// </summary>
         [JsonProperty("flat_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flat_amount")]
+#endif
         public long? FlatAmount { get; set; }
 
         /// <summary>
@@ -19,12 +25,18 @@ public class ProductDefaultPriceDataCurrencyOptionsTierOptions : INestedOptions
         /// <c>flat_amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("flat_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flat_amount_decimal")]
+#endif
         public decimal? FlatAmountDecimal { get; set; }
 
         /// <summary>
         /// The per unit billing amount for each individual unit for which this tier applies.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
@@ -33,6 +45,9 @@ public class ProductDefaultPriceDataCurrencyOptionsTierOptions : INestedOptions
         /// <c>unit_amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
 
         /// <summary>
@@ -41,6 +56,10 @@ public class ProductDefaultPriceDataCurrencyOptionsTierOptions : INestedOptions
         /// </summary>
         [JsonProperty("up_to")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("up_to")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<long?, PriceTierUpTo> UpTo { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Products/ProductDefaultPriceDataCustomUnitAmountOptions.cs b/src/Stripe.net/Services/Products/ProductDefaultPriceDataCustomUnitAmountOptions.cs
index 35b9c7b58a..1fdf565a30 100644
--- a/src/Stripe.net/Services/Products/ProductDefaultPriceDataCustomUnitAmountOptions.cs
+++ b/src/Stripe.net/Services/Products/ProductDefaultPriceDataCustomUnitAmountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ProductDefaultPriceDataCustomUnitAmountOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class ProductDefaultPriceDataCustomUnitAmountOptions : INestedOptions
         /// <c>custom_unit_amount</c>.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
         /// The maximum unit amount the customer can specify for this item.
         /// </summary>
         [JsonProperty("maximum")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("maximum")]
+#endif
         public long? Maximum { get; set; }
 
         /// <summary>
@@ -23,12 +32,18 @@ public class ProductDefaultPriceDataCustomUnitAmountOptions : INestedOptions
         /// minimum charge amount.
         /// </summary>
         [JsonProperty("minimum")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("minimum")]
+#endif
         public long? Minimum { get; set; }
 
         /// <summary>
         /// The starting unit amount which can be updated by the customer.
         /// </summary>
         [JsonProperty("preset")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preset")]
+#endif
         public long? Preset { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Products/ProductDefaultPriceDataOptions.cs b/src/Stripe.net/Services/Products/ProductDefaultPriceDataOptions.cs
index becd4abf15..98a5b9993d 100644
--- a/src/Stripe.net/Services/Products/ProductDefaultPriceDataOptions.cs
+++ b/src/Stripe.net/Services/Products/ProductDefaultPriceDataOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ProductDefaultPriceDataOptions : INestedOptions, IHasMetadata
     {
@@ -12,6 +15,9 @@ public class ProductDefaultPriceDataOptions : INestedOptions, IHasMetadata
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class ProductDefaultPriceDataOptions : INestedOptions, IHasMetadata
         /// href="https://stripe.com/docs/currencies">supported currency</a>.
         /// </summary>
         [JsonProperty("currency_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency_options")]
+#endif
         public Dictionary<string, ProductDefaultPriceDataCurrencyOptionsOptions> CurrencyOptions { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class ProductDefaultPriceDataOptions : INestedOptions, IHasMetadata
         /// Checkout Sessions and Payment Links.
         /// </summary>
         [JsonProperty("custom_unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_unit_amount")]
+#endif
         public ProductDefaultPriceDataCustomUnitAmountOptions CustomUnitAmount { get; set; }
 
         /// <summary>
@@ -36,12 +48,18 @@ public class ProductDefaultPriceDataOptions : INestedOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The recurring components of a price such as <c>interval</c> and <c>interval_count</c>.
         /// </summary>
         [JsonProperty("recurring")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("recurring")]
+#endif
         public ProductDefaultPriceDataRecurringOptions Recurring { get; set; }
 
         /// <summary>
@@ -54,6 +72,9 @@ public class ProductDefaultPriceDataOptions : INestedOptions, IHasMetadata
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
@@ -62,6 +83,9 @@ public class ProductDefaultPriceDataOptions : INestedOptions, IHasMetadata
         /// <c>custom_unit_amount</c> is required.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
@@ -70,6 +94,9 @@ public class ProductDefaultPriceDataOptions : INestedOptions, IHasMetadata
         /// <c>unit_amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Products/ProductDefaultPriceDataRecurringOptions.cs b/src/Stripe.net/Services/Products/ProductDefaultPriceDataRecurringOptions.cs
index 7a08e6b1ce..de06fa2dba 100644
--- a/src/Stripe.net/Services/Products/ProductDefaultPriceDataRecurringOptions.cs
+++ b/src/Stripe.net/Services/Products/ProductDefaultPriceDataRecurringOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ProductDefaultPriceDataRecurringOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class ProductDefaultPriceDataRecurringOptions : INestedOptions
         /// One of: <c>day</c>, <c>month</c>, <c>week</c>, or <c>year</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class ProductDefaultPriceDataRecurringOptions : INestedOptions
         /// years interval allowed (3 years, 36 months, or 156 weeks).
         /// </summary>
         [JsonProperty("interval_count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_count")]
+#endif
         public long? IntervalCount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Products/ProductListOptions.cs b/src/Stripe.net/Services/Products/ProductListOptions.cs
index 02492ebb84..008c8d1214 100644
--- a/src/Stripe.net/Services/Products/ProductListOptions.cs
+++ b/src/Stripe.net/Services/Products/ProductListOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ProductListOptions : ListOptionsWithCreated
     {
@@ -11,6 +14,9 @@ public class ProductListOptions : ListOptionsWithCreated
         /// inactive products).
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool? Active { get; set; }
 
         /// <summary>
@@ -19,12 +25,18 @@ public class ProductListOptions : ListOptionsWithCreated
         /// href="https://stripe.com/docs/api#list_products-ending_before">ending_before</a>.
         /// </summary>
         [JsonProperty("ids")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ids")]
+#endif
         public List<string> Ids { get; set; }
 
         /// <summary>
         /// Only return products that can be shipped (i.e., physical, not digital products).
         /// </summary>
         [JsonProperty("shippable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shippable")]
+#endif
         public bool? Shippable { get; set; }
 
         /// <summary>
@@ -32,12 +44,18 @@ public class ProductListOptions : ListOptionsWithCreated
         /// One of: <c>good</c>, or <c>service</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
         /// Only return products with the given url.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Products/ProductMarketingFeatureOptions.cs b/src/Stripe.net/Services/Products/ProductMarketingFeatureOptions.cs
index fa0e7a4bf5..9b5e82ad97 100644
--- a/src/Stripe.net/Services/Products/ProductMarketingFeatureOptions.cs
+++ b/src/Stripe.net/Services/Products/ProductMarketingFeatureOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ProductMarketingFeatureOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class ProductMarketingFeatureOptions : INestedOptions
         /// The marketing feature name. Up to 80 characters long.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Products/ProductPackageDimensionsOptions.cs b/src/Stripe.net/Services/Products/ProductPackageDimensionsOptions.cs
index 8ed79fcc58..388d7c829d 100644
--- a/src/Stripe.net/Services/Products/ProductPackageDimensionsOptions.cs
+++ b/src/Stripe.net/Services/Products/ProductPackageDimensionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ProductPackageDimensionsOptions : INestedOptions
     {
@@ -9,24 +12,36 @@ public class ProductPackageDimensionsOptions : INestedOptions
         /// Height, in inches. Maximum precision is 2 decimal places.
         /// </summary>
         [JsonProperty("height")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("height")]
+#endif
         public decimal? Height { get; set; }
 
         /// <summary>
         /// Length, in inches. Maximum precision is 2 decimal places.
         /// </summary>
         [JsonProperty("length")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("length")]
+#endif
         public decimal? Length { get; set; }
 
         /// <summary>
         /// Weight, in ounces. Maximum precision is 2 decimal places.
         /// </summary>
         [JsonProperty("weight")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("weight")]
+#endif
         public decimal? Weight { get; set; }
 
         /// <summary>
         /// Width, in inches. Maximum precision is 2 decimal places.
         /// </summary>
         [JsonProperty("width")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("width")]
+#endif
         public decimal? Width { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Products/ProductService.cs b/src/Stripe.net/Services/Products/ProductService.cs
index aaf0db8f7b..26f235c18e 100644
--- a/src/Stripe.net/Services/Products/ProductService.cs
+++ b/src/Stripe.net/Services/Products/ProductService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class ProductService : Service<Product>,
+    public class ProductService : Service,
         ICreatable<Product, ProductCreateOptions>,
         IDeletable<Product, ProductDeleteOptions>,
         IListable<Product, ProductListOptions>,
diff --git a/src/Stripe.net/Services/Products/ProductUpdateOptions.cs b/src/Stripe.net/Services/Products/ProductUpdateOptions.cs
index c69869b292..a4879d7882 100644
--- a/src/Stripe.net/Services/Products/ProductUpdateOptions.cs
+++ b/src/Stripe.net/Services/Products/ProductUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ProductUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -10,6 +13,9 @@ public class ProductUpdateOptions : BaseOptions, IHasMetadata
         /// Whether the product is available for purchase.
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool? Active { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class ProductUpdateOptions : BaseOptions, IHasMetadata
         /// default price for this product.
         /// </summary>
         [JsonProperty("default_price")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_price")]
+#endif
         public string DefaultPrice { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class ProductUpdateOptions : BaseOptions, IHasMetadata
         /// rendering purposes.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -32,6 +44,9 @@ public class ProductUpdateOptions : BaseOptions, IHasMetadata
         /// customer.
         /// </summary>
         [JsonProperty("images")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("images")]
+#endif
         public List<string> Images { get; set; }
 
         /// <summary>
@@ -39,6 +54,9 @@ public class ProductUpdateOptions : BaseOptions, IHasMetadata
         /// href="https://stripe.com/docs/payments/checkout/pricing-table">pricing tables</a>.
         /// </summary>
         [JsonProperty("marketing_features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("marketing_features")]
+#endif
         public List<ProductMarketingFeatureOptions> MarketingFeatures { get; set; }
 
         /// <summary>
@@ -48,24 +66,36 @@ public class ProductUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The product's name, meant to be displayable to the customer.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// The dimensions of this product for shipping purposes.
         /// </summary>
         [JsonProperty("package_dimensions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("package_dimensions")]
+#endif
         public ProductPackageDimensionsOptions PackageDimensions { get; set; }
 
         /// <summary>
         /// Whether this product is shipped (i.e., physical goods).
         /// </summary>
         [JsonProperty("shippable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shippable")]
+#endif
         public bool? Shippable { get; set; }
 
         /// <summary>
@@ -80,12 +110,18 @@ public class ProductUpdateOptions : BaseOptions, IHasMetadata
         /// subscription payments.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
 
         /// <summary>
         /// A <a href="https://stripe.com/docs/tax/tax-categories">tax code</a> ID.
         /// </summary>
         [JsonProperty("tax_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_code")]
+#endif
         public string TaxCode { get; set; }
 
         /// <summary>
@@ -94,12 +130,18 @@ public class ProductUpdateOptions : BaseOptions, IHasMetadata
         /// <c>type=service</c>.
         /// </summary>
         [JsonProperty("unit_label")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_label")]
+#endif
         public string UnitLabel { get; set; }
 
         /// <summary>
         /// A URL of a publicly-accessible webpage for this product.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PromotionCodes/PromotionCodeCreateOptions.cs b/src/Stripe.net/Services/PromotionCodes/PromotionCodeCreateOptions.cs
index 68618f61a7..01dd544e8b 100644
--- a/src/Stripe.net/Services/PromotionCodes/PromotionCodeCreateOptions.cs
+++ b/src/Stripe.net/Services/PromotionCodes/PromotionCodeCreateOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PromotionCodeCreateOptions : BaseOptions, IHasMetadata
     {
@@ -12,6 +15,9 @@ public class PromotionCodeCreateOptions : BaseOptions, IHasMetadata
         /// Whether the promotion code is currently active.
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool? Active { get; set; }
 
         /// <summary>
@@ -22,12 +28,18 @@ public class PromotionCodeCreateOptions : BaseOptions, IHasMetadata
         /// If left blank, we will generate one automatically.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
         /// The coupon for this promotion code.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
@@ -35,6 +47,9 @@ public class PromotionCodeCreateOptions : BaseOptions, IHasMetadata
         /// be used by all customers.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
@@ -43,6 +58,10 @@ public class PromotionCodeCreateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpiresAt { get; set; }
 
         /// <summary>
@@ -51,6 +70,9 @@ public class PromotionCodeCreateOptions : BaseOptions, IHasMetadata
         /// than the coupon's <c>max_redemptions</c>.
         /// </summary>
         [JsonProperty("max_redemptions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("max_redemptions")]
+#endif
         public long? MaxRedemptions { get; set; }
 
         /// <summary>
@@ -60,12 +82,18 @@ public class PromotionCodeCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Settings that restrict the redemption of the promotion code.
         /// </summary>
         [JsonProperty("restrictions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("restrictions")]
+#endif
         public PromotionCodeRestrictionsOptions Restrictions { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PromotionCodes/PromotionCodeListOptions.cs b/src/Stripe.net/Services/PromotionCodes/PromotionCodeListOptions.cs
index 5d1ea951bc..0eea40a486 100644
--- a/src/Stripe.net/Services/PromotionCodes/PromotionCodeListOptions.cs
+++ b/src/Stripe.net/Services/PromotionCodes/PromotionCodeListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PromotionCodeListOptions : ListOptionsWithCreated
     {
@@ -9,24 +12,36 @@ public class PromotionCodeListOptions : ListOptionsWithCreated
         /// Filter promotion codes by whether they are active.
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool? Active { get; set; }
 
         /// <summary>
         /// Only return promotion codes that have this case-insensitive code.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
 
         /// <summary>
         /// Only return promotion codes for this coupon.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
         /// Only return promotion codes that are restricted to this customer.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PromotionCodes/PromotionCodeRestrictionsCurrencyOptionsOptions.cs b/src/Stripe.net/Services/PromotionCodes/PromotionCodeRestrictionsCurrencyOptionsOptions.cs
index 421f32d4d5..504c8c4abd 100644
--- a/src/Stripe.net/Services/PromotionCodes/PromotionCodeRestrictionsCurrencyOptionsOptions.cs
+++ b/src/Stripe.net/Services/PromotionCodes/PromotionCodeRestrictionsCurrencyOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PromotionCodeRestrictionsCurrencyOptionsOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class PromotionCodeRestrictionsCurrencyOptionsOptions : INestedOptions
         /// must be $100 or more to work).
         /// </summary>
         [JsonProperty("minimum_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("minimum_amount")]
+#endif
         public long? MinimumAmount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PromotionCodes/PromotionCodeRestrictionsOptions.cs b/src/Stripe.net/Services/PromotionCodes/PromotionCodeRestrictionsOptions.cs
index b68972d581..83933411a0 100644
--- a/src/Stripe.net/Services/PromotionCodes/PromotionCodeRestrictionsOptions.cs
+++ b/src/Stripe.net/Services/PromotionCodes/PromotionCodeRestrictionsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PromotionCodeRestrictionsOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class PromotionCodeRestrictionsOptions : INestedOptions
         /// code</a> and a <a href="https://stripe.com/docs/currencies">supported currency</a>.
         /// </summary>
         [JsonProperty("currency_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency_options")]
+#endif
         public Dictionary<string, PromotionCodeRestrictionsCurrencyOptionsOptions> CurrencyOptions { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class PromotionCodeRestrictionsOptions : INestedOptions
         /// any successful payments or invoices.
         /// </summary>
         [JsonProperty("first_time_transaction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_time_transaction")]
+#endif
         public bool? FirstTimeTransaction { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class PromotionCodeRestrictionsOptions : INestedOptions
         /// must be $100 or more to work).
         /// </summary>
         [JsonProperty("minimum_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("minimum_amount")]
+#endif
         public long? MinimumAmount { get; set; }
 
         /// <summary>
@@ -33,6 +45,9 @@ public class PromotionCodeRestrictionsOptions : INestedOptions
         /// minimum_amount.
         /// </summary>
         [JsonProperty("minimum_amount_currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("minimum_amount_currency")]
+#endif
         public string MinimumAmountCurrency { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/PromotionCodes/PromotionCodeService.cs b/src/Stripe.net/Services/PromotionCodes/PromotionCodeService.cs
index 009c896f36..3af38f083d 100644
--- a/src/Stripe.net/Services/PromotionCodes/PromotionCodeService.cs
+++ b/src/Stripe.net/Services/PromotionCodes/PromotionCodeService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class PromotionCodeService : Service<PromotionCode>,
+    public class PromotionCodeService : Service,
         ICreatable<PromotionCode, PromotionCodeCreateOptions>,
         IListable<PromotionCode, PromotionCodeListOptions>,
         IRetrievable<PromotionCode, PromotionCodeGetOptions>,
diff --git a/src/Stripe.net/Services/PromotionCodes/PromotionCodeUpdateOptions.cs b/src/Stripe.net/Services/PromotionCodes/PromotionCodeUpdateOptions.cs
index 40c7f648b5..012e18703a 100644
--- a/src/Stripe.net/Services/PromotionCodes/PromotionCodeUpdateOptions.cs
+++ b/src/Stripe.net/Services/PromotionCodes/PromotionCodeUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PromotionCodeUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -11,6 +14,9 @@ public class PromotionCodeUpdateOptions : BaseOptions, IHasMetadata
         /// when the coupon is still valid and the promotion code is otherwise redeemable.
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool? Active { get; set; }
 
         /// <summary>
@@ -20,12 +26,18 @@ public class PromotionCodeUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Settings that restrict the redemption of the promotion code.
         /// </summary>
         [JsonProperty("restrictions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("restrictions")]
+#endif
         public PromotionCodeRestrictionsOptions Restrictions { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/QuoteComputedUpfrontLineItems/QuoteComputedUpfrontLineItemsService.cs b/src/Stripe.net/Services/QuoteComputedUpfrontLineItems/QuoteComputedUpfrontLineItemsService.cs
index e35f247c76..58f64d16b2 100644
--- a/src/Stripe.net/Services/QuoteComputedUpfrontLineItems/QuoteComputedUpfrontLineItemsService.cs
+++ b/src/Stripe.net/Services/QuoteComputedUpfrontLineItems/QuoteComputedUpfrontLineItemsService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class QuoteComputedUpfrontLineItemsService : ServiceNested<LineItem>,
+    public class QuoteComputedUpfrontLineItemsService : Service,
         INestedListable<LineItem, QuoteComputedUpfrontLineItemsListOptions>
     {
         public QuoteComputedUpfrontLineItemsService()
diff --git a/src/Stripe.net/Services/QuoteLineItems/QuoteLineItemService.cs b/src/Stripe.net/Services/QuoteLineItems/QuoteLineItemService.cs
index 12aa6f0ca9..1bbd94be77 100644
--- a/src/Stripe.net/Services/QuoteLineItems/QuoteLineItemService.cs
+++ b/src/Stripe.net/Services/QuoteLineItems/QuoteLineItemService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class QuoteLineItemService : ServiceNested<LineItem>,
+    public class QuoteLineItemService : Service,
         INestedListable<LineItem, QuoteLineItemListOptions>
     {
         public QuoteLineItemService()
diff --git a/src/Stripe.net/Services/Quotes/QuoteAutomaticTaxLiabilityOptions.cs b/src/Stripe.net/Services/Quotes/QuoteAutomaticTaxLiabilityOptions.cs
index 2cdba77baf..6579a2d93a 100644
--- a/src/Stripe.net/Services/Quotes/QuoteAutomaticTaxLiabilityOptions.cs
+++ b/src/Stripe.net/Services/Quotes/QuoteAutomaticTaxLiabilityOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteAutomaticTaxLiabilityOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class QuoteAutomaticTaxLiabilityOptions : INestedOptions
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public string Account { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class QuoteAutomaticTaxLiabilityOptions : INestedOptions
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Quotes/QuoteAutomaticTaxOptions.cs b/src/Stripe.net/Services/Quotes/QuoteAutomaticTaxOptions.cs
index 4e14d15635..1fd5e825e0 100644
--- a/src/Stripe.net/Services/Quotes/QuoteAutomaticTaxOptions.cs
+++ b/src/Stripe.net/Services/Quotes/QuoteAutomaticTaxOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteAutomaticTaxOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class QuoteAutomaticTaxOptions : INestedOptions
         /// subscriptions as well as the quote itself.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class QuoteAutomaticTaxOptions : INestedOptions
         /// transaction is returned in the report of the connected account.
         /// </summary>
         [JsonProperty("liability")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("liability")]
+#endif
         public QuoteAutomaticTaxLiabilityOptions Liability { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Quotes/QuoteCreateOptions.cs b/src/Stripe.net/Services/Quotes/QuoteCreateOptions.cs
index 2bcc1c45ba..c871f089cb 100644
--- a/src/Stripe.net/Services/Quotes/QuoteCreateOptions.cs
+++ b/src/Stripe.net/Services/Quotes/QuoteCreateOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteCreateOptions : BaseOptions, IHasMetadata
     {
@@ -14,6 +17,9 @@ public class QuoteCreateOptions : BaseOptions, IHasMetadata
         /// line items with recurring prices when using this field.
         /// </summary>
         [JsonProperty("application_fee_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_amount")]
+#endif
         public long? ApplicationFeeAmount { get; set; }
 
         /// <summary>
@@ -23,6 +29,9 @@ public class QuoteCreateOptions : BaseOptions, IHasMetadata
         /// recurring price to use this field.
         /// </summary>
         [JsonProperty("application_fee_percent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_percent")]
+#endif
         public decimal? ApplicationFeePercent { get; set; }
 
         /// <summary>
@@ -30,6 +39,9 @@ public class QuoteCreateOptions : BaseOptions, IHasMetadata
         /// subscriptions.
         /// </summary>
         [JsonProperty("automatic_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatic_tax")]
+#endif
         public QuoteAutomaticTaxOptions AutomaticTax { get; set; }
 
         /// <summary>
@@ -42,6 +54,9 @@ public class QuoteCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>charge_automatically</c>, or <c>send_invoice</c>.
         /// </summary>
         [JsonProperty("collection_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("collection_method")]
+#endif
         public string CollectionMethod { get; set; }
 
         /// <summary>
@@ -49,12 +64,18 @@ public class QuoteCreateOptions : BaseOptions, IHasMetadata
         /// the quote. Once specified, it cannot be changed.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
         /// The tax rates that will apply to any line item that does not have <c>tax_rates</c> set.
         /// </summary>
         [JsonProperty("default_tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_tax_rates")]
+#endif
         public List<string> DefaultTaxRates { get; set; }
 
         /// <summary>
@@ -64,12 +85,18 @@ public class QuoteCreateOptions : BaseOptions, IHasMetadata
         /// will be used.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// The discounts applied to the quote.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<QuoteDiscountOptions> Discounts { get; set; }
 
         /// <summary>
@@ -81,6 +108,10 @@ public class QuoteCreateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpiresAt { get; set; }
 
         /// <summary>
@@ -90,6 +121,9 @@ public class QuoteCreateOptions : BaseOptions, IHasMetadata
         /// will be used.
         /// </summary>
         [JsonProperty("footer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("footer")]
+#endif
         public string Footer { get; set; }
 
         /// <summary>
@@ -98,6 +132,9 @@ public class QuoteCreateOptions : BaseOptions, IHasMetadata
         /// <c>expires_at</c>.
         /// </summary>
         [JsonProperty("from_quote")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("from_quote")]
+#endif
         public QuoteFromQuoteOptions FromQuote { get; set; }
 
         /// <summary>
@@ -107,12 +144,18 @@ public class QuoteCreateOptions : BaseOptions, IHasMetadata
         /// will be used.
         /// </summary>
         [JsonProperty("header")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("header")]
+#endif
         public string Header { get; set; }
 
         /// <summary>
         /// All invoices will be billed using the specified settings.
         /// </summary>
         [JsonProperty("invoice_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_settings")]
+#endif
         public QuoteInvoiceSettingsOptions InvoiceSettings { get; set; }
 
         /// <summary>
@@ -120,6 +163,9 @@ public class QuoteCreateOptions : BaseOptions, IHasMetadata
         /// information about the product, the quantity, and the resulting cost.
         /// </summary>
         [JsonProperty("line_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line_items")]
+#endif
         public List<QuoteLineItemOptions> LineItems { get; set; }
 
         /// <summary>
@@ -129,12 +175,18 @@ public class QuoteCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The account on behalf of which to charge.
         /// </summary>
         [JsonProperty("on_behalf_of")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+#endif
         public string OnBehalfOf { get; set; }
 
         /// <summary>
@@ -145,18 +197,27 @@ public class QuoteCreateOptions : BaseOptions, IHasMetadata
         /// subscription is created.
         /// </summary>
         [JsonProperty("subscription_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_data")]
+#endif
         public QuoteSubscriptionDataOptions SubscriptionData { get; set; }
 
         /// <summary>
         /// ID of the test clock to attach to the quote.
         /// </summary>
         [JsonProperty("test_clock")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("test_clock")]
+#endif
         public string TestClock { get; set; }
 
         /// <summary>
         /// The data with which to automatically create a Transfer for each of the invoices.
         /// </summary>
         [JsonProperty("transfer_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_data")]
+#endif
         public QuoteTransferDataOptions TransferData { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Quotes/QuoteDiscountOptions.cs b/src/Stripe.net/Services/Quotes/QuoteDiscountOptions.cs
index 7df91df249..0bf8666cfc 100644
--- a/src/Stripe.net/Services/Quotes/QuoteDiscountOptions.cs
+++ b/src/Stripe.net/Services/Quotes/QuoteDiscountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteDiscountOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class QuoteDiscountOptions : INestedOptions
         /// ID of the coupon to create a new discount for.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
         /// ID of an existing discount on the object (or one of its ancestors) to reuse.
         /// </summary>
         [JsonProperty("discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+#endif
         public string Discount { get; set; }
 
         /// <summary>
         /// ID of the promotion code to create a new discount for.
         /// </summary>
         [JsonProperty("promotion_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotion_code")]
+#endif
         public string PromotionCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Quotes/QuoteFinalizeOptions.cs b/src/Stripe.net/Services/Quotes/QuoteFinalizeOptions.cs
index b7d7ee0553..b40bbdec87 100644
--- a/src/Stripe.net/Services/Quotes/QuoteFinalizeOptions.cs
+++ b/src/Stripe.net/Services/Quotes/QuoteFinalizeOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteFinalizeOptions : BaseOptions
     {
@@ -13,6 +16,10 @@ public class QuoteFinalizeOptions : BaseOptions
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpiresAt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Quotes/QuoteFromQuoteOptions.cs b/src/Stripe.net/Services/Quotes/QuoteFromQuoteOptions.cs
index faeb4b6185..8802e36e01 100644
--- a/src/Stripe.net/Services/Quotes/QuoteFromQuoteOptions.cs
+++ b/src/Stripe.net/Services/Quotes/QuoteFromQuoteOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteFromQuoteOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class QuoteFromQuoteOptions : INestedOptions
         /// Whether this quote is a revision of the previous quote.
         /// </summary>
         [JsonProperty("is_revision")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("is_revision")]
+#endif
         public bool? IsRevision { get; set; }
 
         /// <summary>
         /// The <c>id</c> of the quote that will be cloned.
         /// </summary>
         [JsonProperty("quote")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quote")]
+#endif
         public string Quote { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Quotes/QuoteInvoiceSettingsIssuerOptions.cs b/src/Stripe.net/Services/Quotes/QuoteInvoiceSettingsIssuerOptions.cs
index d4cc9351a7..5ea3787a37 100644
--- a/src/Stripe.net/Services/Quotes/QuoteInvoiceSettingsIssuerOptions.cs
+++ b/src/Stripe.net/Services/Quotes/QuoteInvoiceSettingsIssuerOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteInvoiceSettingsIssuerOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class QuoteInvoiceSettingsIssuerOptions : INestedOptions
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public string Account { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class QuoteInvoiceSettingsIssuerOptions : INestedOptions
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Quotes/QuoteInvoiceSettingsOptions.cs b/src/Stripe.net/Services/Quotes/QuoteInvoiceSettingsOptions.cs
index ef5e5ff798..eb62470e09 100644
--- a/src/Stripe.net/Services/Quotes/QuoteInvoiceSettingsOptions.cs
+++ b/src/Stripe.net/Services/Quotes/QuoteInvoiceSettingsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteInvoiceSettingsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class QuoteInvoiceSettingsOptions : INestedOptions
         /// <c>collection_method=charge_automatically</c>.
         /// </summary>
         [JsonProperty("days_until_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("days_until_due")]
+#endif
         public long? DaysUntilDue { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class QuoteInvoiceSettingsOptions : INestedOptions
         /// branding and support information of the specified account.
         /// </summary>
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public QuoteInvoiceSettingsIssuerOptions Issuer { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Quotes/QuoteLineItemDiscountOptions.cs b/src/Stripe.net/Services/Quotes/QuoteLineItemDiscountOptions.cs
index dab79368b3..9fec5a5707 100644
--- a/src/Stripe.net/Services/Quotes/QuoteLineItemDiscountOptions.cs
+++ b/src/Stripe.net/Services/Quotes/QuoteLineItemDiscountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteLineItemDiscountOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class QuoteLineItemDiscountOptions : INestedOptions
         /// ID of the coupon to create a new discount for.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
         /// ID of an existing discount on the object (or one of its ancestors) to reuse.
         /// </summary>
         [JsonProperty("discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+#endif
         public string Discount { get; set; }
 
         /// <summary>
         /// ID of the promotion code to create a new discount for.
         /// </summary>
         [JsonProperty("promotion_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotion_code")]
+#endif
         public string PromotionCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Quotes/QuoteLineItemOptions.cs b/src/Stripe.net/Services/Quotes/QuoteLineItemOptions.cs
index 397f798694..fe5fcc55fe 100644
--- a/src/Stripe.net/Services/Quotes/QuoteLineItemOptions.cs
+++ b/src/Stripe.net/Services/Quotes/QuoteLineItemOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteLineItemOptions : INestedOptions, IHasId
     {
@@ -10,18 +13,27 @@ public class QuoteLineItemOptions : INestedOptions, IHasId
         /// The discounts applied to this line item.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<QuoteLineItemDiscountOptions> Discounts { get; set; }
 
         /// <summary>
         /// The ID of an existing line item on the quote.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
         /// The ID of the price object. One of <c>price</c> or <c>price_data</c> is required.
         /// </summary>
         [JsonProperty("price")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price")]
+#endif
         public string Price { get; set; }
 
         /// <summary>
@@ -29,12 +41,18 @@ public class QuoteLineItemOptions : INestedOptions, IHasId
         /// object inline. One of <c>price</c> or <c>price_data</c> is required.
         /// </summary>
         [JsonProperty("price_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price_data")]
+#endif
         public QuoteLineItemPriceDataOptions PriceData { get; set; }
 
         /// <summary>
         /// The quantity of the line item.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         /// <summary>
@@ -42,6 +60,9 @@ public class QuoteLineItemOptions : INestedOptions, IHasId
         /// the quote do not apply to this line item.
         /// </summary>
         [JsonProperty("tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rates")]
+#endif
         public List<string> TaxRates { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Quotes/QuoteLineItemPriceDataOptions.cs b/src/Stripe.net/Services/Quotes/QuoteLineItemPriceDataOptions.cs
index 14f4bc2d03..00dfe349a1 100644
--- a/src/Stripe.net/Services/Quotes/QuoteLineItemPriceDataOptions.cs
+++ b/src/Stripe.net/Services/Quotes/QuoteLineItemPriceDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteLineItemPriceDataOptions : INestedOptions
     {
@@ -11,18 +14,27 @@ public class QuoteLineItemPriceDataOptions : INestedOptions
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// The ID of the product that this price will belong to.
         /// </summary>
         [JsonProperty("product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product")]
+#endif
         public string Product { get; set; }
 
         /// <summary>
         /// The recurring components of a price such as <c>interval</c> and <c>interval_count</c>.
         /// </summary>
         [JsonProperty("recurring")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("recurring")]
+#endif
         public QuoteLineItemPriceDataRecurringOptions Recurring { get; set; }
 
         /// <summary>
@@ -35,6 +47,9 @@ public class QuoteLineItemPriceDataOptions : INestedOptions
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
@@ -42,6 +57,9 @@ public class QuoteLineItemPriceDataOptions : INestedOptions
         /// how much to charge.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
@@ -50,6 +68,9 @@ public class QuoteLineItemPriceDataOptions : INestedOptions
         /// <c>unit_amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Quotes/QuoteLineItemPriceDataRecurringOptions.cs b/src/Stripe.net/Services/Quotes/QuoteLineItemPriceDataRecurringOptions.cs
index 1159629049..7c1bd5834b 100644
--- a/src/Stripe.net/Services/Quotes/QuoteLineItemPriceDataRecurringOptions.cs
+++ b/src/Stripe.net/Services/Quotes/QuoteLineItemPriceDataRecurringOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteLineItemPriceDataRecurringOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class QuoteLineItemPriceDataRecurringOptions : INestedOptions
         /// One of: <c>day</c>, <c>month</c>, <c>week</c>, or <c>year</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class QuoteLineItemPriceDataRecurringOptions : INestedOptions
         /// years interval allowed (3 years, 36 months, or 156 weeks).
         /// </summary>
         [JsonProperty("interval_count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_count")]
+#endif
         public long? IntervalCount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Quotes/QuoteListOptions.cs b/src/Stripe.net/Services/Quotes/QuoteListOptions.cs
index f1e8f1fb63..b7104f7215 100644
--- a/src/Stripe.net/Services/Quotes/QuoteListOptions.cs
+++ b/src/Stripe.net/Services/Quotes/QuoteListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteListOptions : ListOptions
     {
@@ -9,6 +12,9 @@ public class QuoteListOptions : ListOptions
         /// The ID of the customer whose quotes will be retrieved.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class QuoteListOptions : ListOptions
         /// One of: <c>accepted</c>, <c>canceled</c>, <c>draft</c>, or <c>open</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class QuoteListOptions : ListOptions
         /// not set.
         /// </summary>
         [JsonProperty("test_clock")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("test_clock")]
+#endif
         public string TestClock { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Quotes/QuoteService.cs b/src/Stripe.net/Services/Quotes/QuoteService.cs
index 5d95d55d1d..9511c08ce5 100644
--- a/src/Stripe.net/Services/Quotes/QuoteService.cs
+++ b/src/Stripe.net/Services/Quotes/QuoteService.cs
@@ -9,7 +9,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public partial class QuoteService : Service<Quote>,
+    public partial class QuoteService : Service,
         ICreatable<Quote, QuoteCreateOptions>,
         IListable<Quote, QuoteListOptions>,
         IRetrievable<Quote, QuoteGetOptions>,
diff --git a/src/Stripe.net/Services/Quotes/QuoteSubscriptionDataOptions.cs b/src/Stripe.net/Services/Quotes/QuoteSubscriptionDataOptions.cs
index 4497e67108..5285852a96 100644
--- a/src/Stripe.net/Services/Quotes/QuoteSubscriptionDataOptions.cs
+++ b/src/Stripe.net/Services/Quotes/QuoteSubscriptionDataOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteSubscriptionDataOptions : INestedOptions, IHasMetadata
     {
@@ -14,6 +17,9 @@ public class QuoteSubscriptionDataOptions : INestedOptions, IHasMetadata
         /// and certain local payment methods UIs.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -26,6 +32,10 @@ public class QuoteSubscriptionDataOptions : INestedOptions, IHasMetadata
         /// </summary>
         [JsonProperty("effective_date")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("effective_date")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, QuoteSubscriptionDataEffectiveDate> EffectiveDate { get; set; }
 
         /// <summary>
@@ -38,6 +48,9 @@ public class QuoteSubscriptionDataOptions : INestedOptions, IHasMetadata
         /// metadata, this field is declarative. Updates will clear prior values.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -45,6 +58,9 @@ public class QuoteSubscriptionDataOptions : INestedOptions, IHasMetadata
         /// the first time.
         /// </summary>
         [JsonProperty("trial_period_days")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_period_days")]
+#endif
         public long? TrialPeriodDays { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Quotes/QuoteTransferDataOptions.cs b/src/Stripe.net/Services/Quotes/QuoteTransferDataOptions.cs
index 053f20e6ee..1e912081e7 100644
--- a/src/Stripe.net/Services/Quotes/QuoteTransferDataOptions.cs
+++ b/src/Stripe.net/Services/Quotes/QuoteTransferDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteTransferDataOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class QuoteTransferDataOptions : INestedOptions
         /// prices when using this field.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -21,12 +27,18 @@ public class QuoteTransferDataOptions : INestedOptions
         /// field.
         /// </summary>
         [JsonProperty("amount_percent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_percent")]
+#endif
         public decimal? AmountPercent { get; set; }
 
         /// <summary>
         /// ID of an existing, connected Stripe account.
         /// </summary>
         [JsonProperty("destination")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination")]
+#endif
         public string Destination { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Quotes/QuoteUpdateOptions.cs b/src/Stripe.net/Services/Quotes/QuoteUpdateOptions.cs
index fd5f5f7d3c..448b53d71d 100644
--- a/src/Stripe.net/Services/Quotes/QuoteUpdateOptions.cs
+++ b/src/Stripe.net/Services/Quotes/QuoteUpdateOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class QuoteUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -14,6 +17,9 @@ public class QuoteUpdateOptions : BaseOptions, IHasMetadata
         /// line items with recurring prices when using this field.
         /// </summary>
         [JsonProperty("application_fee_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_amount")]
+#endif
         public long? ApplicationFeeAmount { get; set; }
 
         /// <summary>
@@ -23,6 +29,9 @@ public class QuoteUpdateOptions : BaseOptions, IHasMetadata
         /// recurring price to use this field.
         /// </summary>
         [JsonProperty("application_fee_percent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_percent")]
+#endif
         public decimal? ApplicationFeePercent { get; set; }
 
         /// <summary>
@@ -30,6 +39,9 @@ public class QuoteUpdateOptions : BaseOptions, IHasMetadata
         /// subscriptions.
         /// </summary>
         [JsonProperty("automatic_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatic_tax")]
+#endif
         public QuoteAutomaticTaxOptions AutomaticTax { get; set; }
 
         /// <summary>
@@ -42,6 +54,9 @@ public class QuoteUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>charge_automatically</c>, or <c>send_invoice</c>.
         /// </summary>
         [JsonProperty("collection_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("collection_method")]
+#endif
         public string CollectionMethod { get; set; }
 
         /// <summary>
@@ -49,24 +64,36 @@ public class QuoteUpdateOptions : BaseOptions, IHasMetadata
         /// the quote. Once specified, it cannot be changed.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
         /// The tax rates that will apply to any line item that does not have <c>tax_rates</c> set.
         /// </summary>
         [JsonProperty("default_tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_tax_rates")]
+#endif
         public List<string> DefaultTaxRates { get; set; }
 
         /// <summary>
         /// A description that will be displayed on the quote PDF.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// The discounts applied to the quote.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<QuoteDiscountOptions> Discounts { get; set; }
 
         /// <summary>
@@ -75,24 +102,37 @@ public class QuoteUpdateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpiresAt { get; set; }
 
         /// <summary>
         /// A footer that will be displayed on the quote PDF.
         /// </summary>
         [JsonProperty("footer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("footer")]
+#endif
         public string Footer { get; set; }
 
         /// <summary>
         /// A header that will be displayed on the quote PDF.
         /// </summary>
         [JsonProperty("header")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("header")]
+#endif
         public string Header { get; set; }
 
         /// <summary>
         /// All invoices will be billed using the specified settings.
         /// </summary>
         [JsonProperty("invoice_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_settings")]
+#endif
         public QuoteInvoiceSettingsOptions InvoiceSettings { get; set; }
 
         /// <summary>
@@ -100,6 +140,9 @@ public class QuoteUpdateOptions : BaseOptions, IHasMetadata
         /// information about the product, the quantity, and the resulting cost.
         /// </summary>
         [JsonProperty("line_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line_items")]
+#endif
         public List<QuoteLineItemOptions> LineItems { get; set; }
 
         /// <summary>
@@ -109,12 +152,18 @@ public class QuoteUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The account on behalf of which to charge.
         /// </summary>
         [JsonProperty("on_behalf_of")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+#endif
         public string OnBehalfOf { get; set; }
 
         /// <summary>
@@ -125,12 +174,18 @@ public class QuoteUpdateOptions : BaseOptions, IHasMetadata
         /// subscription is created.
         /// </summary>
         [JsonProperty("subscription_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription_data")]
+#endif
         public QuoteSubscriptionDataOptions SubscriptionData { get; set; }
 
         /// <summary>
         /// The data with which to automatically create a Transfer for each of the invoices.
         /// </summary>
         [JsonProperty("transfer_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_data")]
+#endif
         public QuoteTransferDataOptions TransferData { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Radar/EarlyFraudWarnings/EarlyFraudWarningListOptions.cs b/src/Stripe.net/Services/Radar/EarlyFraudWarnings/EarlyFraudWarningListOptions.cs
index b4ada0380b..ab86df6054 100644
--- a/src/Stripe.net/Services/Radar/EarlyFraudWarnings/EarlyFraudWarningListOptions.cs
+++ b/src/Stripe.net/Services/Radar/EarlyFraudWarnings/EarlyFraudWarningListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Radar
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class EarlyFraudWarningListOptions : ListOptionsWithCreated
     {
@@ -9,6 +12,9 @@ public class EarlyFraudWarningListOptions : ListOptionsWithCreated
         /// Only return early fraud warnings for the charge specified by this charge ID.
         /// </summary>
         [JsonProperty("charge")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("charge")]
+#endif
         public string Charge { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class EarlyFraudWarningListOptions : ListOptionsWithCreated
         /// specified by this PaymentIntent ID.
         /// </summary>
         [JsonProperty("payment_intent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_intent")]
+#endif
         public string PaymentIntent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Radar/EarlyFraudWarnings/EarlyFraudWarningService.cs b/src/Stripe.net/Services/Radar/EarlyFraudWarnings/EarlyFraudWarningService.cs
index b0ddba8579..a7f4ab8f13 100644
--- a/src/Stripe.net/Services/Radar/EarlyFraudWarnings/EarlyFraudWarningService.cs
+++ b/src/Stripe.net/Services/Radar/EarlyFraudWarnings/EarlyFraudWarningService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Radar
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class EarlyFraudWarningService : Service<EarlyFraudWarning>,
+    public class EarlyFraudWarningService : Service,
         IListable<EarlyFraudWarning, EarlyFraudWarningListOptions>,
         IRetrievable<EarlyFraudWarning, EarlyFraudWarningGetOptions>
     {
diff --git a/src/Stripe.net/Services/Radar/ValueListItems/ValueListItemCreateOptions.cs b/src/Stripe.net/Services/Radar/ValueListItems/ValueListItemCreateOptions.cs
index 961d6c3f88..6933b31322 100644
--- a/src/Stripe.net/Services/Radar/ValueListItems/ValueListItemCreateOptions.cs
+++ b/src/Stripe.net/Services/Radar/ValueListItems/ValueListItemCreateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Radar
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ValueListItemCreateOptions : BaseOptions
     {
@@ -9,12 +12,18 @@ public class ValueListItemCreateOptions : BaseOptions
         /// The value of the item (whose type must match the type of the parent value list).
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
 
         /// <summary>
         /// The identifier of the value list which the created item will be added to.
         /// </summary>
         [JsonProperty("value_list")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value_list")]
+#endif
         public string ValueList { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Radar/ValueListItems/ValueListItemListOptions.cs b/src/Stripe.net/Services/Radar/ValueListItems/ValueListItemListOptions.cs
index 310db24c36..74b17fea05 100644
--- a/src/Stripe.net/Services/Radar/ValueListItems/ValueListItemListOptions.cs
+++ b/src/Stripe.net/Services/Radar/ValueListItems/ValueListItemListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Radar
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ValueListItemListOptions : ListOptionsWithCreated
     {
@@ -10,12 +13,18 @@ public class ValueListItemListOptions : ListOptionsWithCreated
         /// an "is like" match).
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
 
         /// <summary>
         /// Identifier for the parent value list this item belongs to.
         /// </summary>
         [JsonProperty("value_list")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value_list")]
+#endif
         public string ValueList { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Radar/ValueListItems/ValueListItemService.cs b/src/Stripe.net/Services/Radar/ValueListItems/ValueListItemService.cs
index 0956386b2c..71ed5b74ed 100644
--- a/src/Stripe.net/Services/Radar/ValueListItems/ValueListItemService.cs
+++ b/src/Stripe.net/Services/Radar/ValueListItems/ValueListItemService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Radar
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class ValueListItemService : Service<ValueListItem>,
+    public class ValueListItemService : Service,
         ICreatable<ValueListItem, ValueListItemCreateOptions>,
         IDeletable<ValueListItem, ValueListItemDeleteOptions>,
         IListable<ValueListItem, ValueListItemListOptions>,
diff --git a/src/Stripe.net/Services/Radar/ValueLists/ValueListCreateOptions.cs b/src/Stripe.net/Services/Radar/ValueLists/ValueListCreateOptions.cs
index 3e50d0ccfd..016082f5fa 100644
--- a/src/Stripe.net/Services/Radar/ValueLists/ValueListCreateOptions.cs
+++ b/src/Stripe.net/Services/Radar/ValueLists/ValueListCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Radar
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ValueListCreateOptions : BaseOptions, IHasMetadata
     {
@@ -10,6 +13,9 @@ public class ValueListCreateOptions : BaseOptions, IHasMetadata
         /// The name of the value list for use in rules.
         /// </summary>
         [JsonProperty("alias")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alias")]
+#endif
         public string Alias { get; set; }
 
         /// <summary>
@@ -23,6 +29,9 @@ public class ValueListCreateOptions : BaseOptions, IHasMetadata
         /// <c>sepa_debit_fingerprint</c>, <c>string</c>, or <c>us_bank_account_fingerprint</c>.
         /// </summary>
         [JsonProperty("item_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("item_type")]
+#endif
         public string ItemType { get; set; }
 
         /// <summary>
@@ -32,12 +41,18 @@ public class ValueListCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The human-readable name of the value list.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Radar/ValueLists/ValueListListOptions.cs b/src/Stripe.net/Services/Radar/ValueLists/ValueListListOptions.cs
index 05cb4a6205..401f15b086 100644
--- a/src/Stripe.net/Services/Radar/ValueLists/ValueListListOptions.cs
+++ b/src/Stripe.net/Services/Radar/ValueLists/ValueListListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Radar
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ValueListListOptions : ListOptionsWithCreated
     {
@@ -9,12 +12,18 @@ public class ValueListListOptions : ListOptionsWithCreated
         /// The alias used to reference the value list when writing rules.
         /// </summary>
         [JsonProperty("alias")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alias")]
+#endif
         public string Alias { get; set; }
 
         /// <summary>
         /// A value contained within a value list - returns all value lists containing this value.
         /// </summary>
         [JsonProperty("contains")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("contains")]
+#endif
         public string Contains { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Radar/ValueLists/ValueListService.cs b/src/Stripe.net/Services/Radar/ValueLists/ValueListService.cs
index ca26956e65..b66b992a63 100644
--- a/src/Stripe.net/Services/Radar/ValueLists/ValueListService.cs
+++ b/src/Stripe.net/Services/Radar/ValueLists/ValueListService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Radar
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class ValueListService : Service<ValueList>,
+    public class ValueListService : Service,
         ICreatable<ValueList, ValueListCreateOptions>,
         IDeletable<ValueList, ValueListDeleteOptions>,
         IListable<ValueList, ValueListListOptions>,
diff --git a/src/Stripe.net/Services/Radar/ValueLists/ValueListUpdateOptions.cs b/src/Stripe.net/Services/Radar/ValueLists/ValueListUpdateOptions.cs
index 2e53f108f2..0ed4912cc5 100644
--- a/src/Stripe.net/Services/Radar/ValueLists/ValueListUpdateOptions.cs
+++ b/src/Stripe.net/Services/Radar/ValueLists/ValueListUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Radar
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ValueListUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -10,6 +13,9 @@ public class ValueListUpdateOptions : BaseOptions, IHasMetadata
         /// The name of the value list for use in rules.
         /// </summary>
         [JsonProperty("alias")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alias")]
+#endif
         public string Alias { get; set; }
 
         /// <summary>
@@ -19,12 +25,18 @@ public class ValueListUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The human-readable name of the value list.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Refunds/RefundCreateOptions.cs b/src/Stripe.net/Services/Refunds/RefundCreateOptions.cs
index f291b9a360..b5abcecbd7 100644
--- a/src/Stripe.net/Services/Refunds/RefundCreateOptions.cs
+++ b/src/Stripe.net/Services/Refunds/RefundCreateOptions.cs
@@ -3,16 +3,25 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RefundCreateOptions : BaseOptions, IHasMetadata
     {
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
         /// The identifier of the charge to refund.
         /// </summary>
         [JsonProperty("charge")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("charge")]
+#endif
         public string Charge { get; set; }
 
         /// <summary>
@@ -21,12 +30,18 @@ public class RefundCreateOptions : BaseOptions, IHasMetadata
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// Customer whose customer balance to refund from.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
@@ -34,6 +49,9 @@ public class RefundCreateOptions : BaseOptions, IHasMetadata
         /// email from the customer to receive refund instructions.
         /// </summary>
         [JsonProperty("instructions_email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("instructions_email")]
+#endif
         public string InstructionsEmail { get; set; }
 
         /// <summary>
@@ -43,18 +61,27 @@ public class RefundCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Origin of the refund.
         /// </summary>
         [JsonProperty("origin")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("origin")]
+#endif
         public string Origin { get; set; }
 
         /// <summary>
         /// The identifier of the PaymentIntent to refund.
         /// </summary>
         [JsonProperty("payment_intent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_intent")]
+#endif
         public string PaymentIntent { get; set; }
 
         /// <summary>
@@ -66,6 +93,9 @@ public class RefundCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>duplicate</c>, <c>fraudulent</c>, or <c>requested_by_customer</c>.
         /// </summary>
         [JsonProperty("reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reason")]
+#endif
         public string Reason { get; set; }
 
         /// <summary>
@@ -76,6 +106,9 @@ public class RefundCreateOptions : BaseOptions, IHasMetadata
         /// created the charge.
         /// </summary>
         [JsonProperty("refund_application_fee")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_application_fee")]
+#endif
         public bool? RefundApplicationFee { get; set; }
 
         /// <summary>
@@ -85,6 +118,9 @@ public class RefundCreateOptions : BaseOptions, IHasMetadata
         /// that created the charge.
         /// </summary>
         [JsonProperty("reverse_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reverse_transfer")]
+#endif
         public bool? ReverseTransfer { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Refunds/RefundListOptions.cs b/src/Stripe.net/Services/Refunds/RefundListOptions.cs
index a2f09bdf3a..4b765c864d 100644
--- a/src/Stripe.net/Services/Refunds/RefundListOptions.cs
+++ b/src/Stripe.net/Services/Refunds/RefundListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RefundListOptions : ListOptionsWithCreated
     {
@@ -9,12 +12,18 @@ public class RefundListOptions : ListOptionsWithCreated
         /// Only return refunds for the charge specified by this charge ID.
         /// </summary>
         [JsonProperty("charge")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("charge")]
+#endif
         public string Charge { get; set; }
 
         /// <summary>
         /// Only return refunds for the PaymentIntent specified by this ID.
         /// </summary>
         [JsonProperty("payment_intent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_intent")]
+#endif
         public string PaymentIntent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Refunds/RefundService.cs b/src/Stripe.net/Services/Refunds/RefundService.cs
index 8010f5d1bf..b2740a8495 100644
--- a/src/Stripe.net/Services/Refunds/RefundService.cs
+++ b/src/Stripe.net/Services/Refunds/RefundService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class RefundService : Service<Refund>,
+    public class RefundService : Service,
         ICreatable<Refund, RefundCreateOptions>,
         IListable<Refund, RefundListOptions>,
         IRetrievable<Refund, RefundGetOptions>,
diff --git a/src/Stripe.net/Services/Refunds/RefundUpdateOptions.cs b/src/Stripe.net/Services/Refunds/RefundUpdateOptions.cs
index c090fa8598..620b86c753 100644
--- a/src/Stripe.net/Services/Refunds/RefundUpdateOptions.cs
+++ b/src/Stripe.net/Services/Refunds/RefundUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RefundUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -13,6 +16,9 @@ public class RefundUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Reporting/ReportRuns/ReportRunCreateOptions.cs b/src/Stripe.net/Services/Reporting/ReportRuns/ReportRunCreateOptions.cs
index f6d66e23c9..8d1ce641b1 100644
--- a/src/Stripe.net/Services/Reporting/ReportRuns/ReportRunCreateOptions.cs
+++ b/src/Stripe.net/Services/Reporting/ReportRuns/ReportRunCreateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Reporting
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReportRunCreateOptions : BaseOptions
     {
@@ -12,6 +15,9 @@ public class ReportRunCreateOptions : BaseOptions
         /// documentation.
         /// </summary>
         [JsonProperty("parameters")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("parameters")]
+#endif
         public ReportRunParametersOptions Parameters { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class ReportRunCreateOptions : BaseOptions
         /// run, such as <c>"balance.summary.1"</c>.
         /// </summary>
         [JsonProperty("report_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("report_type")]
+#endif
         public string ReportType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Reporting/ReportRuns/ReportRunParametersOptions.cs b/src/Stripe.net/Services/Reporting/ReportRuns/ReportRunParametersOptions.cs
index c10964cab2..f7a1707d0c 100644
--- a/src/Stripe.net/Services/Reporting/ReportRuns/ReportRunParametersOptions.cs
+++ b/src/Stripe.net/Services/Reporting/ReportRuns/ReportRunParametersOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe.Reporting
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReportRunParametersOptions : INestedOptions
     {
@@ -13,18 +16,27 @@ public class ReportRunParametersOptions : INestedOptions
         /// is run with its default column set.
         /// </summary>
         [JsonProperty("columns")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("columns")]
+#endif
         public List<string> Columns { get; set; }
 
         /// <summary>
         /// Connected account ID to filter for in the report run.
         /// </summary>
         [JsonProperty("connected_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("connected_account")]
+#endif
         public string ConnectedAccount { get; set; }
 
         /// <summary>
         /// Currency of objects to be included in the report run.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -32,6 +44,10 @@ public class ReportRunParametersOptions : INestedOptions
         /// </summary>
         [JsonProperty("interval_end")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_end")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? IntervalEnd { get; set; }
 
         /// <summary>
@@ -39,12 +55,19 @@ public class ReportRunParametersOptions : INestedOptions
         /// </summary>
         [JsonProperty("interval_start")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_start")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? IntervalStart { get; set; }
 
         /// <summary>
         /// Payout ID by which to filter the report run.
         /// </summary>
         [JsonProperty("payout")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payout")]
+#endif
         public string Payout { get; set; }
 
         /// <summary>
@@ -65,6 +88,9 @@ public class ReportRunParametersOptions : INestedOptions
         /// <c>unreconciled_customer_funds</c>.
         /// </summary>
         [JsonProperty("reporting_category")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reporting_category")]
+#endif
         public string ReportingCategory { get; set; }
 
         /// <summary>
@@ -257,6 +283,9 @@ public class ReportRunParametersOptions : INestedOptions
         /// <c>US/Samoa</c>, <c>UTC</c>, <c>Universal</c>, <c>W-SU</c>, <c>WET</c>, or <c>Zulu</c>.
         /// </summary>
         [JsonProperty("timezone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("timezone")]
+#endif
         public string Timezone { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Reporting/ReportRuns/ReportRunService.cs b/src/Stripe.net/Services/Reporting/ReportRuns/ReportRunService.cs
index 2e127c5d76..48c5cd377c 100644
--- a/src/Stripe.net/Services/Reporting/ReportRuns/ReportRunService.cs
+++ b/src/Stripe.net/Services/Reporting/ReportRuns/ReportRunService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Reporting
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class ReportRunService : Service<ReportRun>,
+    public class ReportRunService : Service,
         ICreatable<ReportRun, ReportRunCreateOptions>,
         IListable<ReportRun, ReportRunListOptions>,
         IRetrievable<ReportRun, ReportRunGetOptions>
diff --git a/src/Stripe.net/Services/Reporting/ReportTypes/ReportTypeService.cs b/src/Stripe.net/Services/Reporting/ReportTypes/ReportTypeService.cs
index d6802a6c72..2a1e04e274 100644
--- a/src/Stripe.net/Services/Reporting/ReportTypes/ReportTypeService.cs
+++ b/src/Stripe.net/Services/Reporting/ReportTypes/ReportTypeService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Reporting
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class ReportTypeService : Service<ReportType>,
+    public class ReportTypeService : Service,
         IListable<ReportType, ReportTypeListOptions>,
         IRetrievable<ReportType, ReportTypeGetOptions>
     {
diff --git a/src/Stripe.net/Services/Reviews/ReviewService.cs b/src/Stripe.net/Services/Reviews/ReviewService.cs
index 3022c78ca8..e85f85156f 100644
--- a/src/Stripe.net/Services/Reviews/ReviewService.cs
+++ b/src/Stripe.net/Services/Reviews/ReviewService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class ReviewService : Service<Review>,
+    public class ReviewService : Service,
         IListable<Review, ReviewListOptions>,
         IRetrievable<Review, ReviewGetOptions>
     {
diff --git a/src/Stripe.net/Services/SetupAttempts/SetupAttemptListOptions.cs b/src/Stripe.net/Services/SetupAttempts/SetupAttemptListOptions.cs
index 738397aa00..be5b950fe0 100644
--- a/src/Stripe.net/Services/SetupAttempts/SetupAttemptListOptions.cs
+++ b/src/Stripe.net/Services/SetupAttempts/SetupAttemptListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupAttemptListOptions : ListOptionsWithCreated
     {
@@ -9,6 +12,9 @@ public class SetupAttemptListOptions : ListOptionsWithCreated
         /// Only return SetupAttempts created by the SetupIntent specified by this ID.
         /// </summary>
         [JsonProperty("setup_intent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_intent")]
+#endif
         public string SetupIntent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupAttempts/SetupAttemptService.cs b/src/Stripe.net/Services/SetupAttempts/SetupAttemptService.cs
index 6d17447f78..3a5d2e1c1a 100644
--- a/src/Stripe.net/Services/SetupAttempts/SetupAttemptService.cs
+++ b/src/Stripe.net/Services/SetupAttempts/SetupAttemptService.cs
@@ -7,7 +7,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class SetupAttemptService : Service<SetupAttempt>,
+    public class SetupAttemptService : Service,
         IListable<SetupAttempt, SetupAttemptListOptions>
     {
         public SetupAttemptService()
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentAutomaticPaymentMethodsOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentAutomaticPaymentMethodsOptions.cs
index 4862e06d83..4d55ba22f9 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentAutomaticPaymentMethodsOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentAutomaticPaymentMethodsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentAutomaticPaymentMethodsOptions : INestedOptions
     {
@@ -16,12 +19,18 @@ public class SetupIntentAutomaticPaymentMethodsOptions : INestedOptions
         /// One of: <c>always</c>, or <c>never</c>.
         /// </summary>
         [JsonProperty("allow_redirects")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allow_redirects")]
+#endif
         public string AllowRedirects { get; set; }
 
         /// <summary>
         /// Whether this feature is enabled.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentCancelOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentCancelOptions.cs
index 9390502d6e..db430d3e89 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentCancelOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentCancelOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentCancelOptions : BaseOptions
     {
@@ -11,6 +14,9 @@ public class SetupIntentCancelOptions : BaseOptions
         /// One of: <c>abandoned</c>, <c>duplicate</c>, or <c>requested_by_customer</c>.
         /// </summary>
         [JsonProperty("cancellation_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancellation_reason")]
+#endif
         public string CancellationReason { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentConfirmOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentConfirmOptions.cs
index fe6d0af5ba..d959d03cd3 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentConfirmOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentConfirmOptions.cs
@@ -2,10 +2,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentConfirmOptions : BaseOptions
     {
         [JsonProperty("client_secret")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("client_secret")]
+#endif
         public string ClientSecret { get; set; }
 
         /// <summary>
@@ -16,9 +22,15 @@ public class SetupIntentConfirmOptions : BaseOptions
         /// precedence.
         /// </summary>
         [JsonProperty("confirmation_token")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("confirmation_token")]
+#endif
         public string ConfirmationToken { get; set; }
 
         [JsonProperty("mandate_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_data")]
+#endif
         public SetupIntentMandateDataOptions MandateData { get; set; }
 
         /// <summary>
@@ -26,6 +38,9 @@ public class SetupIntentConfirmOptions : BaseOptions
         /// this SetupIntent.
         /// </summary>
         [JsonProperty("payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method")]
+#endif
         public string PaymentMethod { get; set; }
 
         /// <summary>
@@ -34,12 +49,18 @@ public class SetupIntentConfirmOptions : BaseOptions
         /// value in the SetupIntent.
         /// </summary>
         [JsonProperty("payment_method_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_data")]
+#endif
         public SetupIntentPaymentMethodDataOptions PaymentMethodData { get; set; }
 
         /// <summary>
         /// Payment method-specific configuration for this SetupIntent.
         /// </summary>
         [JsonProperty("payment_method_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_options")]
+#endif
         public SetupIntentPaymentMethodOptionsOptions PaymentMethodOptions { get; set; }
 
         /// <summary>
@@ -49,6 +70,9 @@ public class SetupIntentConfirmOptions : BaseOptions
         /// and other redirect-based payment methods.
         /// </summary>
         [JsonProperty("return_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_url")]
+#endif
         public string ReturnUrl { get; set; }
 
         /// <summary>
@@ -56,6 +80,9 @@ public class SetupIntentConfirmOptions : BaseOptions
         /// client-side SDKs to handle the next actions.
         /// </summary>
         [JsonProperty("use_stripe_sdk")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("use_stripe_sdk")]
+#endif
         public bool? UseStripeSdk { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentCreateOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentCreateOptions.cs
index 5f301f18b4..638843e87a 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentCreateOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentCreateOptions : BaseOptions, IHasMetadata
     {
@@ -16,6 +19,9 @@ public class SetupIntentCreateOptions : BaseOptions, IHasMetadata
         /// Customer.
         /// </summary>
         [JsonProperty("attach_to_self")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("attach_to_self")]
+#endif
         public bool? AttachToSelf { get; set; }
 
         /// <summary>
@@ -23,6 +29,9 @@ public class SetupIntentCreateOptions : BaseOptions, IHasMetadata
         /// in the Dashboard and that are compatible with its other parameters.
         /// </summary>
         [JsonProperty("automatic_payment_methods")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatic_payment_methods")]
+#endif
         public SetupIntentAutomaticPaymentMethodsOptions AutomaticPaymentMethods { get; set; }
 
         /// <summary>
@@ -31,6 +40,9 @@ public class SetupIntentCreateOptions : BaseOptions, IHasMetadata
         /// <c>return_url</c> in case further authentication is necessary.
         /// </summary>
         [JsonProperty("confirm")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("confirm")]
+#endif
         public bool? Confirm { get; set; }
 
         /// <summary>
@@ -41,6 +53,9 @@ public class SetupIntentCreateOptions : BaseOptions, IHasMetadata
         /// precedence.
         /// </summary>
         [JsonProperty("confirmation_token")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("confirmation_token")]
+#endif
         public string ConfirmationToken { get; set; }
 
         /// <summary>
@@ -51,12 +66,18 @@ public class SetupIntentCreateOptions : BaseOptions, IHasMetadata
         /// SetupIntent.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -70,6 +91,9 @@ public class SetupIntentCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>inbound</c>, or <c>outbound</c>.
         /// </summary>
         [JsonProperty("flow_directions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flow_directions")]
+#endif
         public List<string> FlowDirections { get; set; }
 
         /// <summary>
@@ -78,6 +102,9 @@ public class SetupIntentCreateOptions : BaseOptions, IHasMetadata
         /// href="https://stripe.com/docs/api/setup_intents/create#create_setup_intent-confirm"><c>confirm=true</c></a>.
         /// </summary>
         [JsonProperty("mandate_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_data")]
+#endif
         public SetupIntentMandateDataOptions MandateData { get; set; }
 
         /// <summary>
@@ -87,12 +114,18 @@ public class SetupIntentCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The Stripe account ID created for this SetupIntent.
         /// </summary>
         [JsonProperty("on_behalf_of")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+#endif
         public string OnBehalfOf { get; set; }
 
         /// <summary>
@@ -100,6 +133,9 @@ public class SetupIntentCreateOptions : BaseOptions, IHasMetadata
         /// this SetupIntent.
         /// </summary>
         [JsonProperty("payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method")]
+#endif
         public string PaymentMethod { get; set; }
 
         /// <summary>
@@ -108,6 +144,9 @@ public class SetupIntentCreateOptions : BaseOptions, IHasMetadata
         /// configuration</a> to use with this SetupIntent.
         /// </summary>
         [JsonProperty("payment_method_configuration")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_configuration")]
+#endif
         public string PaymentMethodConfiguration { get; set; }
 
         /// <summary>
@@ -116,12 +155,18 @@ public class SetupIntentCreateOptions : BaseOptions, IHasMetadata
         /// value in the SetupIntent.
         /// </summary>
         [JsonProperty("payment_method_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_data")]
+#endif
         public SetupIntentPaymentMethodDataOptions PaymentMethodData { get; set; }
 
         /// <summary>
         /// Payment method-specific configuration for this SetupIntent.
         /// </summary>
         [JsonProperty("payment_method_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_options")]
+#endif
         public SetupIntentPaymentMethodOptionsOptions PaymentMethodOptions { get; set; }
 
         /// <summary>
@@ -131,6 +176,9 @@ public class SetupIntentCreateOptions : BaseOptions, IHasMetadata
         /// settings</a>.
         /// </summary>
         [JsonProperty("payment_method_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_types")]
+#endif
         public List<string> PaymentMethodTypes { get; set; }
 
         /// <summary>
@@ -141,6 +189,9 @@ public class SetupIntentCreateOptions : BaseOptions, IHasMetadata
         /// href="https://stripe.com/docs/api/setup_intents/create#create_setup_intent-confirm"><c>confirm=true</c></a>.
         /// </summary>
         [JsonProperty("return_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_url")]
+#endif
         public string ReturnUrl { get; set; }
 
         /// <summary>
@@ -148,6 +199,9 @@ public class SetupIntentCreateOptions : BaseOptions, IHasMetadata
         /// successful completion.
         /// </summary>
         [JsonProperty("single_use")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("single_use")]
+#endif
         public SetupIntentSingleUseOptions SingleUse { get; set; }
 
         /// <summary>
@@ -156,6 +210,9 @@ public class SetupIntentCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("usage")]
+#endif
         public string Usage { get; set; }
 
         /// <summary>
@@ -163,6 +220,9 @@ public class SetupIntentCreateOptions : BaseOptions, IHasMetadata
         /// client-side SDKs to handle the next actions.
         /// </summary>
         [JsonProperty("use_stripe_sdk")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("use_stripe_sdk")]
+#endif
         public bool? UseStripeSdk { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentGetOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentGetOptions.cs
index 95e0900400..6c2eec9690 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentGetOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentGetOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentGetOptions : BaseOptions
     {
@@ -10,6 +13,9 @@ public class SetupIntentGetOptions : BaseOptions
         /// key to retrieve the SetupIntent.
         /// </summary>
         [JsonProperty("client_secret")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("client_secret")]
+#endif
         public string ClientSecret { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentListOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentListOptions.cs
index f3c38dd64c..2232ea09b5 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentListOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentListOptions : ListOptionsWithCreated
     {
@@ -15,18 +18,27 @@ public class SetupIntentListOptions : ListOptionsWithCreated
         /// Customer.
         /// </summary>
         [JsonProperty("attach_to_self")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("attach_to_self")]
+#endif
         public bool? AttachToSelf { get; set; }
 
         /// <summary>
         /// Only return SetupIntents for the customer specified by this customer ID.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
         /// Only return SetupIntents that associate with the specified payment method.
         /// </summary>
         [JsonProperty("payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method")]
+#endif
         public string PaymentMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentMandateDataCustomerAcceptanceOnlineOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentMandateDataCustomerAcceptanceOnlineOptions.cs
index cb6bab6a39..329e4a3e3e 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentMandateDataCustomerAcceptanceOnlineOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentMandateDataCustomerAcceptanceOnlineOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentMandateDataCustomerAcceptanceOnlineOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class SetupIntentMandateDataCustomerAcceptanceOnlineOptions : INestedOpti
         /// The IP address from which the Mandate was accepted by the customer.
         /// </summary>
         [JsonProperty("ip_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip_address")]
+#endif
         public string IpAddress { get; set; }
 
         /// <summary>
         /// The user agent of the browser from which the Mandate was accepted by the customer.
         /// </summary>
         [JsonProperty("user_agent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_agent")]
+#endif
         public string UserAgent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentMandateDataCustomerAcceptanceOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentMandateDataCustomerAcceptanceOptions.cs
index 5586e714cc..aba2091636 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentMandateDataCustomerAcceptanceOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentMandateDataCustomerAcceptanceOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentMandateDataCustomerAcceptanceOptions : INestedOptions
     {
@@ -12,6 +15,10 @@ public class SetupIntentMandateDataCustomerAcceptanceOptions : INestedOptions
         /// </summary>
         [JsonProperty("accepted_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("accepted_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? AcceptedAt { get; set; }
 
         /// <summary>
@@ -19,6 +26,9 @@ public class SetupIntentMandateDataCustomerAcceptanceOptions : INestedOptions
         /// acceptance.
         /// </summary>
         [JsonProperty("offline")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("offline")]
+#endif
         public SetupIntentMandateDataCustomerAcceptanceOfflineOptions Offline { get; set; }
 
         /// <summary>
@@ -26,6 +36,9 @@ public class SetupIntentMandateDataCustomerAcceptanceOptions : INestedOptions
         /// acceptance.
         /// </summary>
         [JsonProperty("online")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("online")]
+#endif
         public SetupIntentMandateDataCustomerAcceptanceOnlineOptions Online { get; set; }
 
         /// <summary>
@@ -34,6 +47,9 @@ public class SetupIntentMandateDataCustomerAcceptanceOptions : INestedOptions
         /// One of: <c>offline</c>, or <c>online</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentMandateDataOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentMandateDataOptions.cs
index 5661891c77..31c5724712 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentMandateDataOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentMandateDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentMandateDataOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SetupIntentMandateDataOptions : INestedOptions
         /// This hash contains details about the customer acceptance of the Mandate.
         /// </summary>
         [JsonProperty("customer_acceptance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_acceptance")]
+#endif
         public SetupIntentMandateDataCustomerAcceptanceOptions CustomerAcceptance { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataAcssDebitOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataAcssDebitOptions.cs
index 008754b89d..f9aa197d3b 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataAcssDebitOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataAcssDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodDataAcssDebitOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class SetupIntentPaymentMethodDataAcssDebitOptions : INestedOptions
         /// Customer's bank account number.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
         /// Institution number of the customer's bank.
         /// </summary>
         [JsonProperty("institution_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("institution_number")]
+#endif
         public string InstitutionNumber { get; set; }
 
         /// <summary>
         /// Transit number of the customer's bank.
         /// </summary>
         [JsonProperty("transit_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transit_number")]
+#endif
         public string TransitNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataAuBecsDebitOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataAuBecsDebitOptions.cs
index 34a8749561..613b3bfde9 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataAuBecsDebitOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataAuBecsDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodDataAuBecsDebitOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class SetupIntentPaymentMethodDataAuBecsDebitOptions : INestedOptions
         /// The account number for the bank account.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
         /// Bank-State-Branch number of the bank account.
         /// </summary>
         [JsonProperty("bsb_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bsb_number")]
+#endif
         public string BsbNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataBacsDebitOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataBacsDebitOptions.cs
index be89a803b0..5007b389e1 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataBacsDebitOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataBacsDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodDataBacsDebitOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class SetupIntentPaymentMethodDataBacsDebitOptions : INestedOptions
         /// Account number of the bank account that the funds will be debited from.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
         /// Sort code of the bank account. (e.g., <c>10-20-30</c>).
         /// </summary>
         [JsonProperty("sort_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sort_code")]
+#endif
         public string SortCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataBillingDetailsOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataBillingDetailsOptions.cs
index 551029b8a8..ba04be64eb 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataBillingDetailsOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataBillingDetailsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodDataBillingDetailsOptions : INestedOptions
     {
@@ -9,24 +12,36 @@ public class SetupIntentPaymentMethodDataBillingDetailsOptions : INestedOptions
         /// Billing address.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public AddressOptions Address { get; set; }
 
         /// <summary>
         /// Email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// Full name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// Billing phone number (including extension).
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataBoletoOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataBoletoOptions.cs
index 48f7aa9f2d..388b9a7087 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataBoletoOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataBoletoOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodDataBoletoOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SetupIntentPaymentMethodDataBoletoOptions : INestedOptions
         /// consumers).
         /// </summary>
         [JsonProperty("tax_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_id")]
+#endif
         public string TaxId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataEpsOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataEpsOptions.cs
index b13c3e3f12..e620d56ede 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataEpsOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataEpsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodDataEpsOptions : INestedOptions
     {
@@ -23,6 +26,9 @@ public class SetupIntentPaymentMethodDataEpsOptions : INestedOptions
         /// <c>vr_bank_braunau</c>.
         /// </summary>
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataFpxOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataFpxOptions.cs
index 64018b0c0b..108b10a6d9 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataFpxOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataFpxOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodDataFpxOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SetupIntentPaymentMethodDataFpxOptions : INestedOptions
         /// One of: <c>company</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("account_holder_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_type")]
+#endif
         public string AccountHolderType { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class SetupIntentPaymentMethodDataFpxOptions : INestedOptions
         /// <c>public_bank</c>, <c>rhb</c>, <c>standard_chartered</c>, or <c>uob</c>.
         /// </summary>
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataIdealOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataIdealOptions.cs
index 5195f5758d..fd7a77c338 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataIdealOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataIdealOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodDataIdealOptions : INestedOptions
     {
@@ -14,6 +17,9 @@ public class SetupIntentPaymentMethodDataIdealOptions : INestedOptions
         /// <c>yoursafe</c>.
         /// </summary>
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataKlarnaDobOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataKlarnaDobOptions.cs
index 99176c523c..f4be38647a 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataKlarnaDobOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataKlarnaDobOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodDataKlarnaDobOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class SetupIntentPaymentMethodDataKlarnaDobOptions : INestedOptions
         /// The day of birth, between 1 and 31.
         /// </summary>
         [JsonProperty("day")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("day")]
+#endif
         public long? Day { get; set; }
 
         /// <summary>
         /// The month of birth, between 1 and 12.
         /// </summary>
         [JsonProperty("month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("month")]
+#endif
         public long? Month { get; set; }
 
         /// <summary>
         /// The four-digit year of birth.
         /// </summary>
         [JsonProperty("year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("year")]
+#endif
         public long? Year { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataKlarnaOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataKlarnaOptions.cs
index d5105f2436..ba209e2286 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataKlarnaOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataKlarnaOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodDataKlarnaOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SetupIntentPaymentMethodDataKlarnaOptions : INestedOptions
         /// Customer's date of birth.
         /// </summary>
         [JsonProperty("dob")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dob")]
+#endif
         public SetupIntentPaymentMethodDataKlarnaDobOptions Dob { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataNaverPayOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataNaverPayOptions.cs
index 1fe71ca886..8a965c4382 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataNaverPayOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataNaverPayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodDataNaverPayOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class SetupIntentPaymentMethodDataNaverPayOptions : INestedOptions
         /// One of: <c>card</c>, or <c>points</c>.
         /// </summary>
         [JsonProperty("funding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding")]
+#endif
         public string Funding { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataOptions.cs
index 6e3b03f63f..385822c12e 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
     {
@@ -11,6 +14,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// Debit payment method.
         /// </summary>
         [JsonProperty("acss_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acss_debit")]
+#endif
         public SetupIntentPaymentMethodDataAcssDebitOptions AcssDebit { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("affirm")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("affirm")]
+#endif
         public SetupIntentPaymentMethodDataAffirmOptions Affirm { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// the AfterpayClearpay payment method.
         /// </summary>
         [JsonProperty("afterpay_clearpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("afterpay_clearpay")]
+#endif
         public SetupIntentPaymentMethodDataAfterpayClearpayOptions AfterpayClearpay { get; set; }
 
         /// <summary>
@@ -32,6 +44,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("alipay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alipay")]
+#endif
         public SetupIntentPaymentMethodDataAlipayOptions Alipay { get; set; }
 
         /// <summary>
@@ -42,6 +57,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// One of: <c>always</c>, <c>limited</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("allow_redisplay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allow_redisplay")]
+#endif
         public string AllowRedisplay { get; set; }
 
         /// <summary>
@@ -49,6 +67,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// method.
         /// </summary>
         [JsonProperty("alma")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alma")]
+#endif
         public SetupIntentPaymentMethodDataAlmaOptions Alma { get; set; }
 
         /// <summary>
@@ -56,6 +77,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("amazon_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amazon_pay")]
+#endif
         public SetupIntentPaymentMethodDataAmazonPayOptions AmazonPay { get; set; }
 
         /// <summary>
@@ -63,6 +87,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// bank account.
         /// </summary>
         [JsonProperty("au_becs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("au_becs_debit")]
+#endif
         public SetupIntentPaymentMethodDataAuBecsDebitOptions AuBecsDebit { get; set; }
 
         /// <summary>
@@ -70,6 +97,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// Direct Debit bank account.
         /// </summary>
         [JsonProperty("bacs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bacs_debit")]
+#endif
         public SetupIntentPaymentMethodDataBacsDebitOptions BacsDebit { get; set; }
 
         /// <summary>
@@ -77,6 +107,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// Bancontact payment method.
         /// </summary>
         [JsonProperty("bancontact")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bancontact")]
+#endif
         public SetupIntentPaymentMethodDataBancontactOptions Bancontact { get; set; }
 
         /// <summary>
@@ -84,6 +117,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// particular types of payment methods.
         /// </summary>
         [JsonProperty("billing_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_details")]
+#endif
         public SetupIntentPaymentMethodDataBillingDetailsOptions BillingDetails { get; set; }
 
         /// <summary>
@@ -91,6 +127,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("blik")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("blik")]
+#endif
         public SetupIntentPaymentMethodDataBlikOptions Blik { get; set; }
 
         /// <summary>
@@ -98,6 +137,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("boleto")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("boleto")]
+#endif
         public SetupIntentPaymentMethodDataBoletoOptions Boleto { get; set; }
 
         /// <summary>
@@ -105,6 +147,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// Pay payment method.
         /// </summary>
         [JsonProperty("cashapp")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cashapp")]
+#endif
         public SetupIntentPaymentMethodDataCashappOptions Cashapp { get; set; }
 
         /// <summary>
@@ -112,6 +157,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// CustomerBalance payment method.
         /// </summary>
         [JsonProperty("customer_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_balance")]
+#endif
         public SetupIntentPaymentMethodDataCustomerBalanceOptions CustomerBalance { get; set; }
 
         /// <summary>
@@ -119,6 +167,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// method.
         /// </summary>
         [JsonProperty("eps")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eps")]
+#endif
         public SetupIntentPaymentMethodDataEpsOptions Eps { get; set; }
 
         /// <summary>
@@ -126,6 +177,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// method.
         /// </summary>
         [JsonProperty("fpx")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fpx")]
+#endif
         public SetupIntentPaymentMethodDataFpxOptions Fpx { get; set; }
 
         /// <summary>
@@ -133,6 +187,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("giropay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("giropay")]
+#endif
         public SetupIntentPaymentMethodDataGiropayOptions Giropay { get; set; }
 
         /// <summary>
@@ -140,6 +197,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("grabpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("grabpay")]
+#endif
         public SetupIntentPaymentMethodDataGrabpayOptions Grabpay { get; set; }
 
         /// <summary>
@@ -147,6 +207,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("ideal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ideal")]
+#endif
         public SetupIntentPaymentMethodDataIdealOptions Ideal { get; set; }
 
         /// <summary>
@@ -154,6 +217,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// Interac Present payment method.
         /// </summary>
         [JsonProperty("interac_present")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interac_present")]
+#endif
         public SetupIntentPaymentMethodDataInteracPresentOptions InteracPresent { get; set; }
 
         /// <summary>
@@ -161,6 +227,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// Pay payment method.
         /// </summary>
         [JsonProperty("kakao_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kakao_pay")]
+#endif
         public SetupIntentPaymentMethodDataKakaoPayOptions KakaoPay { get; set; }
 
         /// <summary>
@@ -168,6 +237,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("klarna")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("klarna")]
+#endif
         public SetupIntentPaymentMethodDataKlarnaOptions Klarna { get; set; }
 
         /// <summary>
@@ -175,6 +247,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("konbini")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("konbini")]
+#endif
         public SetupIntentPaymentMethodDataKonbiniOptions Konbini { get; set; }
 
         /// <summary>
@@ -182,6 +257,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// Card payment method.
         /// </summary>
         [JsonProperty("kr_card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kr_card")]
+#endif
         public SetupIntentPaymentMethodDataKrCardOptions KrCard { get; set; }
 
         /// <summary>
@@ -189,6 +267,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("link")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("link")]
+#endif
         public SetupIntentPaymentMethodDataLinkOptions Link { get; set; }
 
         /// <summary>
@@ -198,6 +279,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -205,6 +289,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// MobilePay payment method.
         /// </summary>
         [JsonProperty("mobilepay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mobilepay")]
+#endif
         public SetupIntentPaymentMethodDataMobilepayOptions Mobilepay { get; set; }
 
         /// <summary>
@@ -212,6 +299,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// Multibanco payment method.
         /// </summary>
         [JsonProperty("multibanco")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("multibanco")]
+#endif
         public SetupIntentPaymentMethodDataMultibancoOptions Multibanco { get; set; }
 
         /// <summary>
@@ -219,6 +309,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// Pay payment method.
         /// </summary>
         [JsonProperty("naver_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("naver_pay")]
+#endif
         public SetupIntentPaymentMethodDataNaverPayOptions NaverPay { get; set; }
 
         /// <summary>
@@ -226,6 +319,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("oxxo")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("oxxo")]
+#endif
         public SetupIntentPaymentMethodDataOxxoOptions Oxxo { get; set; }
 
         /// <summary>
@@ -233,6 +329,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// method.
         /// </summary>
         [JsonProperty("p24")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("p24")]
+#endif
         public SetupIntentPaymentMethodDataP24Options P24 { get; set; }
 
         /// <summary>
@@ -240,6 +339,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// PayByBank payment method.
         /// </summary>
         [JsonProperty("pay_by_bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_by_bank")]
+#endif
         public SetupIntentPaymentMethodDataPayByBankOptions PayByBank { get; set; }
 
         /// <summary>
@@ -247,6 +349,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("payco")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payco")]
+#endif
         public SetupIntentPaymentMethodDataPaycoOptions Payco { get; set; }
 
         /// <summary>
@@ -254,6 +359,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("paynow")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paynow")]
+#endif
         public SetupIntentPaymentMethodDataPaynowOptions Paynow { get; set; }
 
         /// <summary>
@@ -261,6 +369,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("paypal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paypal")]
+#endif
         public SetupIntentPaymentMethodDataPaypalOptions Paypal { get; set; }
 
         /// <summary>
@@ -268,6 +379,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// method.
         /// </summary>
         [JsonProperty("pix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pix")]
+#endif
         public SetupIntentPaymentMethodDataPixOptions Pix { get; set; }
 
         /// <summary>
@@ -275,6 +389,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// PromptPay payment method.
         /// </summary>
         [JsonProperty("promptpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promptpay")]
+#endif
         public SetupIntentPaymentMethodDataPromptpayOptions Promptpay { get; set; }
 
         /// <summary>
@@ -283,6 +400,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// information.
         /// </summary>
         [JsonProperty("radar_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("radar_options")]
+#endif
         public SetupIntentPaymentMethodDataRadarOptionsOptions RadarOptions { get; set; }
 
         /// <summary>
@@ -290,6 +410,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// Revolut Pay payment method.
         /// </summary>
         [JsonProperty("revolut_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("revolut_pay")]
+#endif
         public SetupIntentPaymentMethodDataRevolutPayOptions RevolutPay { get; set; }
 
         /// <summary>
@@ -297,6 +420,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// SamsungPay payment method.
         /// </summary>
         [JsonProperty("samsung_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("samsung_pay")]
+#endif
         public SetupIntentPaymentMethodDataSamsungPayOptions SamsungPay { get; set; }
 
         /// <summary>
@@ -304,6 +430,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// debit bank account.
         /// </summary>
         [JsonProperty("sepa_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_debit")]
+#endif
         public SetupIntentPaymentMethodDataSepaDebitOptions SepaDebit { get; set; }
 
         /// <summary>
@@ -311,6 +440,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("sofort")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sofort")]
+#endif
         public SetupIntentPaymentMethodDataSofortOptions Sofort { get; set; }
 
         /// <summary>
@@ -318,6 +450,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// payment method.
         /// </summary>
         [JsonProperty("swish")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("swish")]
+#endif
         public SetupIntentPaymentMethodDataSwishOptions Swish { get; set; }
 
         /// <summary>
@@ -325,6 +460,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// method.
         /// </summary>
         [JsonProperty("twint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("twint")]
+#endif
         public SetupIntentPaymentMethodDataTwintOptions Twint { get; set; }
 
         /// <summary>
@@ -342,6 +480,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// <c>twint</c>, <c>us_bank_account</c>, <c>wechat_pay</c>, or <c>zip</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
@@ -349,6 +490,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// US bank account payment method.
         /// </summary>
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public SetupIntentPaymentMethodDataUsBankAccountOptions UsBankAccount { get; set; }
 
         /// <summary>
@@ -356,6 +500,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// wechat_pay payment method.
         /// </summary>
         [JsonProperty("wechat_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wechat_pay")]
+#endif
         public SetupIntentPaymentMethodDataWechatPayOptions WechatPay { get; set; }
 
         /// <summary>
@@ -363,6 +510,9 @@ public class SetupIntentPaymentMethodDataOptions : INestedOptions, IHasMetadata
         /// method.
         /// </summary>
         [JsonProperty("zip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("zip")]
+#endif
         public SetupIntentPaymentMethodDataZipOptions Zip { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataP24Options.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataP24Options.cs
index d3da70e468..14506f6de8 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataP24Options.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataP24Options.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodDataP24Options : INestedOptions
     {
@@ -17,6 +20,9 @@ public class SetupIntentPaymentMethodDataP24Options : INestedOptions
         /// <c>volkswagen_bank</c>.
         /// </summary>
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataRadarOptionsOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataRadarOptionsOptions.cs
index 196bb59c44..16473fdfbf 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataRadarOptionsOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataRadarOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodDataRadarOptionsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class SetupIntentPaymentMethodDataRadarOptionsOptions : INestedOptions
         /// predictions on your payments.
         /// </summary>
         [JsonProperty("session")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("session")]
+#endif
         public string Session { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataSepaDebitOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataSepaDebitOptions.cs
index 1ffffa295f..bdeea1554a 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataSepaDebitOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataSepaDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodDataSepaDebitOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SetupIntentPaymentMethodDataSepaDebitOptions : INestedOptions
         /// IBAN of the bank account.
         /// </summary>
         [JsonProperty("iban")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iban")]
+#endif
         public string Iban { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataSofortOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataSofortOptions.cs
index 191a2b6b5b..387082ab80 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataSofortOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataSofortOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodDataSofortOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SetupIntentPaymentMethodDataSofortOptions : INestedOptions
         /// One of: <c>AT</c>, <c>BE</c>, <c>DE</c>, <c>ES</c>, <c>IT</c>, or <c>NL</c>.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataUsBankAccountOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataUsBankAccountOptions.cs
index d42ce4c261..6919c07c6e 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataUsBankAccountOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodDataUsBankAccountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodDataUsBankAccountOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class SetupIntentPaymentMethodDataUsBankAccountOptions : INestedOptions
         /// One of: <c>company</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("account_holder_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_type")]
+#endif
         public string AccountHolderType { get; set; }
 
         /// <summary>
         /// Account number of the bank account.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
@@ -23,18 +32,27 @@ public class SetupIntentPaymentMethodDataUsBankAccountOptions : INestedOptions
         /// One of: <c>checking</c>, or <c>savings</c>.
         /// </summary>
         [JsonProperty("account_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_type")]
+#endif
         public string AccountType { get; set; }
 
         /// <summary>
         /// The ID of a Financial Connections Account to use as a payment method.
         /// </summary>
         [JsonProperty("financial_connections_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_connections_account")]
+#endif
         public string FinancialConnectionsAccount { get; set; }
 
         /// <summary>
         /// Routing number of the bank account.
         /// </summary>
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsAcssDebitMandateOptionsOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsAcssDebitMandateOptionsOptions.cs
index a8ffe8f75f..f3b326dc11 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsAcssDebitMandateOptionsOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsAcssDebitMandateOptionsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsAcssDebitMandateOptionsOptions : INestedOptions
     {
@@ -14,6 +17,9 @@ public class SetupIntentPaymentMethodOptionsAcssDebitMandateOptionsOptions : INe
         /// Intent.
         /// </summary>
         [JsonProperty("custom_mandate_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("custom_mandate_url")]
+#endif
         public string CustomMandateUrl { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class SetupIntentPaymentMethodOptionsAcssDebitMandateOptionsOptions : INe
         /// One of: <c>invoice</c>, or <c>subscription</c>.
         /// </summary>
         [JsonProperty("default_for")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_for")]
+#endif
         public List<string> DefaultFor { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class SetupIntentPaymentMethodOptionsAcssDebitMandateOptionsOptions : INe
         /// 'interval' or 'combined'.
         /// </summary>
         [JsonProperty("interval_description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_description")]
+#endif
         public string IntervalDescription { get; set; }
 
         /// <summary>
@@ -35,6 +47,9 @@ public class SetupIntentPaymentMethodOptionsAcssDebitMandateOptionsOptions : INe
         /// One of: <c>combined</c>, <c>interval</c>, or <c>sporadic</c>.
         /// </summary>
         [JsonProperty("payment_schedule")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_schedule")]
+#endif
         public string PaymentSchedule { get; set; }
 
         /// <summary>
@@ -42,6 +57,9 @@ public class SetupIntentPaymentMethodOptionsAcssDebitMandateOptionsOptions : INe
         /// One of: <c>business</c>, or <c>personal</c>.
         /// </summary>
         [JsonProperty("transaction_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_type")]
+#endif
         public string TransactionType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsAcssDebitOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsAcssDebitOptions.cs
index 225ecfb7f5..dcbda5c48a 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsAcssDebitOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsAcssDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsAcssDebitOptions : INestedOptions
     {
@@ -12,12 +15,18 @@ public class SetupIntentPaymentMethodOptionsAcssDebitOptions : INestedOptions
         /// One of: <c>cad</c>, or <c>usd</c>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// Additional fields for Mandate creation.
         /// </summary>
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public SetupIntentPaymentMethodOptionsAcssDebitMandateOptionsOptions MandateOptions { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class SetupIntentPaymentMethodOptionsAcssDebitOptions : INestedOptions
         /// One of: <c>automatic</c>, <c>instant</c>, or <c>microdeposits</c>.
         /// </summary>
         [JsonProperty("verification_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification_method")]
+#endif
         public string VerificationMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsBacsDebitMandateOptionsOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsBacsDebitMandateOptionsOptions.cs
index 65f058cdd0..876bd97b86 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsBacsDebitMandateOptionsOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsBacsDebitMandateOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsBacsDebitMandateOptionsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class SetupIntentPaymentMethodOptionsBacsDebitMandateOptionsOptions : INe
         /// '/', '_', '-', '&amp;', '.'. Cannot begin with 'DDIC' or 'STRIPE'.
         /// </summary>
         [JsonProperty("reference_prefix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference_prefix")]
+#endif
         public string ReferencePrefix { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsBacsDebitOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsBacsDebitOptions.cs
index 7de61ce110..c149ba4679 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsBacsDebitOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsBacsDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsBacsDebitOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SetupIntentPaymentMethodOptionsBacsDebitOptions : INestedOptions
         /// Additional fields for Mandate creation.
         /// </summary>
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public SetupIntentPaymentMethodOptionsBacsDebitMandateOptionsOptions MandateOptions { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsCardMandateOptionsOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsCardMandateOptionsOptions.cs
index 73d4abccc9..3396d4fcf2 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsCardMandateOptionsOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsCardMandateOptionsOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsCardMandateOptionsOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class SetupIntentPaymentMethodOptionsCardMandateOptionsOptions : INestedO
         /// Amount to be charged for future payments.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class SetupIntentPaymentMethodOptionsCardMandateOptionsOptions : INestedO
         /// One of: <c>fixed</c>, or <c>maximum</c>.
         /// </summary>
         [JsonProperty("amount_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_type")]
+#endif
         public string AmountType { get; set; }
 
         /// <summary>
@@ -30,6 +39,9 @@ public class SetupIntentPaymentMethodOptionsCardMandateOptionsOptions : INestedO
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -37,6 +49,9 @@ public class SetupIntentPaymentMethodOptionsCardMandateOptionsOptions : INestedO
         /// customer.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -45,6 +60,10 @@ public class SetupIntentPaymentMethodOptionsCardMandateOptionsOptions : INestedO
         /// </summary>
         [JsonProperty("end_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? EndDate { get; set; }
 
         /// <summary>
@@ -53,6 +72,9 @@ public class SetupIntentPaymentMethodOptionsCardMandateOptionsOptions : INestedO
         /// One of: <c>day</c>, <c>month</c>, <c>sporadic</c>, <c>week</c>, or <c>year</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
 
         /// <summary>
@@ -62,12 +84,18 @@ public class SetupIntentPaymentMethodOptionsCardMandateOptionsOptions : INestedO
         /// <c>interval=sporadic</c>.
         /// </summary>
         [JsonProperty("interval_count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_count")]
+#endif
         public long? IntervalCount { get; set; }
 
         /// <summary>
         /// Unique identifier for the mandate or subscription.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
@@ -76,12 +104,19 @@ public class SetupIntentPaymentMethodOptionsCardMandateOptionsOptions : INestedO
         /// </summary>
         [JsonProperty("start_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("start_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? StartDate { get; set; }
 
         /// <summary>
         /// Specifies the type of mandates supported. Possible values are <c>india</c>.
         /// </summary>
         [JsonProperty("supported_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("supported_types")]
+#endif
         public List<string> SupportedTypes { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsCardOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsCardOptions.cs
index 0f3ce4fa45..cfb956acb4 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsCardOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsCardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsCardOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SetupIntentPaymentMethodOptionsCardOptions : INestedOptions
         /// Configuration options for setting up an eMandate for cards issued in India.
         /// </summary>
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public SetupIntentPaymentMethodOptionsCardMandateOptionsOptions MandateOptions { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class SetupIntentPaymentMethodOptionsCardOptions : INestedOptions
         /// provided during confirmation.
         /// </summary>
         [JsonProperty("moto")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("moto")]
+#endif
         public bool? Moto { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class SetupIntentPaymentMethodOptionsCardOptions : INestedOptions
         /// <c>mastercard</c>, <c>unionpay</c>, <c>unknown</c>, or <c>visa</c>.
         /// </summary>
         [JsonProperty("network")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network")]
+#endif
         public string Network { get; set; }
 
         /// <summary>
@@ -42,6 +54,9 @@ public class SetupIntentPaymentMethodOptionsCardOptions : INestedOptions
         /// One of: <c>any</c>, <c>automatic</c>, or <c>challenge</c>.
         /// </summary>
         [JsonProperty("request_three_d_secure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_three_d_secure")]
+#endif
         public string RequestThreeDSecure { get; set; }
 
         /// <summary>
@@ -49,6 +64,9 @@ public class SetupIntentPaymentMethodOptionsCardOptions : INestedOptions
         /// authentication details to use for this setup.
         /// </summary>
         [JsonProperty("three_d_secure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("three_d_secure")]
+#endif
         public SetupIntentPaymentMethodOptionsCardThreeDSecureOptions ThreeDSecure { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsCartesBancairesOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsCartesBancairesOptions.cs
index da5360a5ba..441e5b9ab2 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsCartesBancairesOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsCartesBancairesOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsCartesBancairesOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class SetupIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsCartes
         /// One of: <c>0</c>, <c>1</c>, <c>2</c>, <c>3</c>, <c>4</c>, or <c>A</c>.
         /// </summary>
         [JsonProperty("cb_avalgo")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cb_avalgo")]
+#endif
         public string CbAvalgo { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class SetupIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsCartes
         /// and most significant bit first) that has been Base64 encoded.
         /// </summary>
         [JsonProperty("cb_exemption")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cb_exemption")]
+#endif
         public string CbExemption { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class SetupIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsCartes
         /// numeric value 0-99.
         /// </summary>
         [JsonProperty("cb_score")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cb_score")]
+#endif
         public long? CbScore { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsOptions.cs
index 0c9eb4d0df..4e7ecc5d13 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SetupIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsOption
         /// Cartes Bancaires-specific 3DS fields.
         /// </summary>
         [JsonProperty("cartes_bancaires")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cartes_bancaires")]
+#endif
         public SetupIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsCartesBancairesOptions CartesBancaires { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsCardThreeDSecureOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsCardThreeDSecureOptions.cs
index d068214421..a376d08c37 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsCardThreeDSecureOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsCardThreeDSecureOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsCardThreeDSecureOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SetupIntentPaymentMethodOptionsCardThreeDSecureOptions : INestedOpt
         /// One of: <c>A</c>, <c>C</c>, <c>I</c>, <c>N</c>, <c>R</c>, <c>U</c>, or <c>Y</c>.
         /// </summary>
         [JsonProperty("ares_trans_status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ares_trans_status")]
+#endif
         public string AresTransStatus { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class SetupIntentPaymentMethodOptionsCardThreeDSecureOptions : INestedOpt
         /// return the base64-encoded version, which is what you should specify here.).
         /// </summary>
         [JsonProperty("cryptogram")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cryptogram")]
+#endif
         public string Cryptogram { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class SetupIntentPaymentMethodOptionsCardThreeDSecureOptions : INestedOpt
         /// One of: <c>01</c>, <c>02</c>, <c>05</c>, <c>06</c>, or <c>07</c>.
         /// </summary>
         [JsonProperty("electronic_commerce_indicator")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("electronic_commerce_indicator")]
+#endif
         public string ElectronicCommerceIndicator { get; set; }
 
         /// <summary>
@@ -34,6 +46,9 @@ public class SetupIntentPaymentMethodOptionsCardThreeDSecureOptions : INestedOpt
         /// accordingly.
         /// </summary>
         [JsonProperty("network_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network_options")]
+#endif
         public SetupIntentPaymentMethodOptionsCardThreeDSecureNetworkOptionsOptions NetworkOptions { get; set; }
 
         /// <summary>
@@ -41,6 +56,9 @@ public class SetupIntentPaymentMethodOptionsCardThreeDSecureOptions : INestedOpt
         /// AReq sent to the card Issuer's ACS. A string containing 2 digits from 01-99.
         /// </summary>
         [JsonProperty("requestor_challenge_indicator")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requestor_challenge_indicator")]
+#endif
         public string RequestorChallengeIndicator { get; set; }
 
         /// <summary>
@@ -48,6 +66,9 @@ public class SetupIntentPaymentMethodOptionsCardThreeDSecureOptions : INestedOpt
         /// (dsTransID).
         /// </summary>
         [JsonProperty("transaction_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_id")]
+#endif
         public string TransactionId { get; set; }
 
         /// <summary>
@@ -55,6 +76,9 @@ public class SetupIntentPaymentMethodOptionsCardThreeDSecureOptions : INestedOpt
         /// One of: <c>1.0.2</c>, <c>2.1.0</c>, or <c>2.2.0</c>.
         /// </summary>
         [JsonProperty("version")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("version")]
+#endif
         public string Version { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsLinkOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsLinkOptions.cs
index 3cb9812958..02ecf16560 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsLinkOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsLinkOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsLinkOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class SetupIntentPaymentMethodOptionsLinkOptions : INestedOptions
         /// </summary>
         [Obsolete("This property is deprecated, please refer to the description for details.")]
         [JsonProperty("persistent_token")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("persistent_token")]
+#endif
         public string PersistentToken { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsOptions.cs
index d80c14a0ab..8148a40a56 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SetupIntentPaymentMethodOptionsOptions : INestedOptions
         /// ACSS Debit payment method options.
         /// </summary>
         [JsonProperty("acss_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acss_debit")]
+#endif
         public SetupIntentPaymentMethodOptionsAcssDebitOptions AcssDebit { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class SetupIntentPaymentMethodOptionsOptions : INestedOptions
         /// AmazonPay payment method options.
         /// </summary>
         [JsonProperty("amazon_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amazon_pay")]
+#endif
         public SetupIntentPaymentMethodOptionsAmazonPayOptions AmazonPay { get; set; }
 
         /// <summary>
@@ -24,12 +33,18 @@ public class SetupIntentPaymentMethodOptionsOptions : INestedOptions
         /// Bacs Debit payment method options.
         /// </summary>
         [JsonProperty("bacs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bacs_debit")]
+#endif
         public SetupIntentPaymentMethodOptionsBacsDebitOptions BacsDebit { get; set; }
 
         /// <summary>
         /// Configuration for any card setup attempted on this SetupIntent.
         /// </summary>
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public SetupIntentPaymentMethodOptionsCardOptions Card { get; set; }
 
         /// <summary>
@@ -37,6 +52,9 @@ public class SetupIntentPaymentMethodOptionsOptions : INestedOptions
         /// card-present payment method options.
         /// </summary>
         [JsonProperty("card_present")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_present")]
+#endif
         public SetupIntentPaymentMethodOptionsCardPresentOptions CardPresent { get; set; }
 
         /// <summary>
@@ -44,6 +62,9 @@ public class SetupIntentPaymentMethodOptionsOptions : INestedOptions
         /// payment method options.
         /// </summary>
         [JsonProperty("link")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("link")]
+#endif
         public SetupIntentPaymentMethodOptionsLinkOptions Link { get; set; }
 
         /// <summary>
@@ -51,6 +72,9 @@ public class SetupIntentPaymentMethodOptionsOptions : INestedOptions
         /// PayPal payment method options.
         /// </summary>
         [JsonProperty("paypal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paypal")]
+#endif
         public SetupIntentPaymentMethodOptionsPaypalOptions Paypal { get; set; }
 
         /// <summary>
@@ -58,6 +82,9 @@ public class SetupIntentPaymentMethodOptionsOptions : INestedOptions
         /// SEPA Debit payment method options.
         /// </summary>
         [JsonProperty("sepa_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_debit")]
+#endif
         public SetupIntentPaymentMethodOptionsSepaDebitOptions SepaDebit { get; set; }
 
         /// <summary>
@@ -65,6 +92,9 @@ public class SetupIntentPaymentMethodOptionsOptions : INestedOptions
         /// the US bank account payment method options.
         /// </summary>
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public SetupIntentPaymentMethodOptionsUsBankAccountOptions UsBankAccount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsPaypalOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsPaypalOptions.cs
index 331ccaa09e..0d06eb201f 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsPaypalOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsPaypalOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsPaypalOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SetupIntentPaymentMethodOptionsPaypalOptions : INestedOptions
         /// represents the mandate between the merchant and the customer.
         /// </summary>
         [JsonProperty("billing_agreement_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_agreement_id")]
+#endif
         public string BillingAgreementId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsSepaDebitMandateOptionsOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsSepaDebitMandateOptionsOptions.cs
index c31c2e7af9..121d2e9acc 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsSepaDebitMandateOptionsOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsSepaDebitMandateOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsSepaDebitMandateOptionsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class SetupIntentPaymentMethodOptionsSepaDebitMandateOptionsOptions : INe
         /// '/', '_', '-', '&amp;', '.'. Cannot begin with 'STRIPE'.
         /// </summary>
         [JsonProperty("reference_prefix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference_prefix")]
+#endif
         public string ReferencePrefix { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsSepaDebitOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsSepaDebitOptions.cs
index 988846278a..786b63c130 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsSepaDebitOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsSepaDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsSepaDebitOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SetupIntentPaymentMethodOptionsSepaDebitOptions : INestedOptions
         /// Additional fields for Mandate creation.
         /// </summary>
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public SetupIntentPaymentMethodOptionsSepaDebitMandateOptionsOptions MandateOptions { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsFiltersOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsFiltersOptions.cs
index 4d9be1f2bd..443feb89d2 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsFiltersOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsFiltersOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsFiltersOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsFil
         /// One of: <c>checking</c>, or <c>savings</c>.
         /// </summary>
         [JsonProperty("account_subcategories")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_subcategories")]
+#endif
         public List<string> AccountSubcategories { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions.cs
index 831823bf82..238db8eab8 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsOpt
         /// method.
         /// </summary>
         [JsonProperty("filters")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("filters")]
+#endif
         public SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsFiltersOptions Filters { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsOpt
         /// <c>transactions</c>.
         /// </summary>
         [JsonProperty("permissions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("permissions")]
+#endif
         public List<string> Permissions { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsOpt
         /// One of: <c>balances</c>, <c>ownership</c>, or <c>transactions</c>.
         /// </summary>
         [JsonProperty("prefetch")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("prefetch")]
+#endif
         public List<string> Prefetch { get; set; }
 
         /// <summary>
@@ -35,6 +47,9 @@ public class SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsOpt
         /// user will be redirected to this URL to return to your app.
         /// </summary>
         [JsonProperty("return_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_url")]
+#endif
         public string ReturnUrl { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountMandateOptionsOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountMandateOptionsOptions.cs
index 7adb1a54b4..bb45e10fcc 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountMandateOptionsOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountMandateOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsUsBankAccountMandateOptionsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SetupIntentPaymentMethodOptionsUsBankAccountMandateOptionsOptions :
         /// The method used to collect offline mandate customer acceptance.
         /// </summary>
         [JsonProperty("collection_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("collection_method")]
+#endif
         public string CollectionMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountNetworksOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountNetworksOptions.cs
index 981cd9ddd3..62932475fb 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountNetworksOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountNetworksOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsUsBankAccountNetworksOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class SetupIntentPaymentMethodOptionsUsBankAccountNetworksOptions : INest
         /// One of: <c>ach</c>, or <c>us_domestic_wire</c>.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public List<string> Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountOptions.cs
index e75b96b91c..90588446a6 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentPaymentMethodOptionsUsBankAccountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentPaymentMethodOptionsUsBankAccountOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class SetupIntentPaymentMethodOptionsUsBankAccountOptions : INestedOption
         /// Additional fields for Financial Connections Session creation.
         /// </summary>
         [JsonProperty("financial_connections")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_connections")]
+#endif
         public SetupIntentPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions FinancialConnections { get; set; }
 
         /// <summary>
         /// Additional fields for Mandate creation.
         /// </summary>
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public SetupIntentPaymentMethodOptionsUsBankAccountMandateOptionsOptions MandateOptions { get; set; }
 
         /// <summary>
         /// Additional fields for network related functions.
         /// </summary>
         [JsonProperty("networks")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("networks")]
+#endif
         public SetupIntentPaymentMethodOptionsUsBankAccountNetworksOptions Networks { get; set; }
 
         /// <summary>
@@ -28,6 +40,9 @@ public class SetupIntentPaymentMethodOptionsUsBankAccountOptions : INestedOption
         /// One of: <c>automatic</c>, <c>instant</c>, or <c>microdeposits</c>.
         /// </summary>
         [JsonProperty("verification_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification_method")]
+#endif
         public string VerificationMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentService.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentService.cs
index bb23269564..0a57a26049 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentService.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class SetupIntentService : Service<SetupIntent>,
+    public class SetupIntentService : Service,
         ICreatable<SetupIntent, SetupIntentCreateOptions>,
         IListable<SetupIntent, SetupIntentListOptions>,
         IRetrievable<SetupIntent, SetupIntentGetOptions>,
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentSingleUseOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentSingleUseOptions.cs
index 8920df40ef..9c331d5797 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentSingleUseOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentSingleUseOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentSingleUseOptions : INestedOptions
     {
@@ -16,6 +19,9 @@ public class SetupIntentSingleUseOptions : INestedOptions
         /// 99999999 for a USD charge of $999,999.99).
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -24,6 +30,9 @@ public class SetupIntentSingleUseOptions : INestedOptions
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentUpdateOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentUpdateOptions.cs
index 20f870509e..8473f30dff 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentUpdateOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -16,6 +19,9 @@ public class SetupIntentUpdateOptions : BaseOptions, IHasMetadata
         /// Customer.
         /// </summary>
         [JsonProperty("attach_to_self")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("attach_to_self")]
+#endif
         public bool? AttachToSelf { get; set; }
 
         /// <summary>
@@ -26,12 +32,18 @@ public class SetupIntentUpdateOptions : BaseOptions, IHasMetadata
         /// SetupIntent.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -45,6 +57,9 @@ public class SetupIntentUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>inbound</c>, or <c>outbound</c>.
         /// </summary>
         [JsonProperty("flow_directions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flow_directions")]
+#endif
         public List<string> FlowDirections { get; set; }
 
         /// <summary>
@@ -54,6 +69,9 @@ public class SetupIntentUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -61,6 +79,9 @@ public class SetupIntentUpdateOptions : BaseOptions, IHasMetadata
         /// this SetupIntent. To unset this field to null, pass in an empty string.
         /// </summary>
         [JsonProperty("payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method")]
+#endif
         public string PaymentMethod { get; set; }
 
         /// <summary>
@@ -69,6 +90,9 @@ public class SetupIntentUpdateOptions : BaseOptions, IHasMetadata
         /// configuration</a> to use with this SetupIntent.
         /// </summary>
         [JsonProperty("payment_method_configuration")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_configuration")]
+#endif
         public string PaymentMethodConfiguration { get; set; }
 
         /// <summary>
@@ -77,12 +101,18 @@ public class SetupIntentUpdateOptions : BaseOptions, IHasMetadata
         /// value in the SetupIntent.
         /// </summary>
         [JsonProperty("payment_method_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_data")]
+#endif
         public SetupIntentPaymentMethodDataOptions PaymentMethodData { get; set; }
 
         /// <summary>
         /// Payment method-specific configuration for this SetupIntent.
         /// </summary>
         [JsonProperty("payment_method_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_options")]
+#endif
         public SetupIntentPaymentMethodOptionsOptions PaymentMethodOptions { get; set; }
 
         /// <summary>
@@ -92,6 +122,9 @@ public class SetupIntentUpdateOptions : BaseOptions, IHasMetadata
         /// settings</a>.
         /// </summary>
         [JsonProperty("payment_method_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_types")]
+#endif
         public List<string> PaymentMethodTypes { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SetupIntents/SetupIntentVerifyMicrodepositsOptions.cs b/src/Stripe.net/Services/SetupIntents/SetupIntentVerifyMicrodepositsOptions.cs
index cdd299c972..a179e12c4b 100644
--- a/src/Stripe.net/Services/SetupIntents/SetupIntentVerifyMicrodepositsOptions.cs
+++ b/src/Stripe.net/Services/SetupIntents/SetupIntentVerifyMicrodepositsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SetupIntentVerifyMicrodepositsOptions : BaseOptions
     {
@@ -11,6 +14,9 @@ public class SetupIntentVerifyMicrodepositsOptions : BaseOptions
         /// to the bank account.
         /// </summary>
         [JsonProperty("amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amounts")]
+#endif
         public List<long?> Amounts { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class SetupIntentVerifyMicrodepositsOptions : BaseOptions
         /// account.
         /// </summary>
         [JsonProperty("descriptor_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("descriptor_code")]
+#endif
         public string DescriptorCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/ShippingRates/ShippingRateCreateOptions.cs b/src/Stripe.net/Services/ShippingRates/ShippingRateCreateOptions.cs
index 8e4adc8c10..946f0deb9d 100644
--- a/src/Stripe.net/Services/ShippingRates/ShippingRateCreateOptions.cs
+++ b/src/Stripe.net/Services/ShippingRates/ShippingRateCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ShippingRateCreateOptions : BaseOptions, IHasMetadata
     {
@@ -11,6 +14,9 @@ public class ShippingRateCreateOptions : BaseOptions, IHasMetadata
         /// customer. This will appear on CheckoutSessions.
         /// </summary>
         [JsonProperty("delivery_estimate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("delivery_estimate")]
+#endif
         public ShippingRateDeliveryEstimateOptions DeliveryEstimate { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class ShippingRateCreateOptions : BaseOptions, IHasMetadata
         /// on CheckoutSessions.
         /// </summary>
         [JsonProperty("display_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_name")]
+#endif
         public string DisplayName { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class ShippingRateCreateOptions : BaseOptions, IHasMetadata
         /// <c>fixed_amount</c>.
         /// </summary>
         [JsonProperty("fixed_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amount")]
+#endif
         public ShippingRateFixedAmountOptions FixedAmount { get; set; }
 
         /// <summary>
@@ -34,6 +46,9 @@ public class ShippingRateCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -42,6 +57,9 @@ public class ShippingRateCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
@@ -49,12 +67,18 @@ public class ShippingRateCreateOptions : BaseOptions, IHasMetadata
         /// code is <c>txcd_92010001</c>.
         /// </summary>
         [JsonProperty("tax_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_code")]
+#endif
         public string TaxCode { get; set; }
 
         /// <summary>
         /// The type of calculation to use on the shipping rate.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/ShippingRates/ShippingRateDeliveryEstimateMaximumOptions.cs b/src/Stripe.net/Services/ShippingRates/ShippingRateDeliveryEstimateMaximumOptions.cs
index 96f9de12a2..17b51dd371 100644
--- a/src/Stripe.net/Services/ShippingRates/ShippingRateDeliveryEstimateMaximumOptions.cs
+++ b/src/Stripe.net/Services/ShippingRates/ShippingRateDeliveryEstimateMaximumOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ShippingRateDeliveryEstimateMaximumOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class ShippingRateDeliveryEstimateMaximumOptions : INestedOptions
         /// One of: <c>business_day</c>, <c>day</c>, <c>hour</c>, <c>month</c>, or <c>week</c>.
         /// </summary>
         [JsonProperty("unit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit")]
+#endif
         public string Unit { get; set; }
 
         /// <summary>
         /// Must be greater than 0.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public long? Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/ShippingRates/ShippingRateDeliveryEstimateMinimumOptions.cs b/src/Stripe.net/Services/ShippingRates/ShippingRateDeliveryEstimateMinimumOptions.cs
index 21a4cac7bb..28ac20c28b 100644
--- a/src/Stripe.net/Services/ShippingRates/ShippingRateDeliveryEstimateMinimumOptions.cs
+++ b/src/Stripe.net/Services/ShippingRates/ShippingRateDeliveryEstimateMinimumOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ShippingRateDeliveryEstimateMinimumOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class ShippingRateDeliveryEstimateMinimumOptions : INestedOptions
         /// One of: <c>business_day</c>, <c>day</c>, <c>hour</c>, <c>month</c>, or <c>week</c>.
         /// </summary>
         [JsonProperty("unit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit")]
+#endif
         public string Unit { get; set; }
 
         /// <summary>
         /// Must be greater than 0.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public long? Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/ShippingRates/ShippingRateDeliveryEstimateOptions.cs b/src/Stripe.net/Services/ShippingRates/ShippingRateDeliveryEstimateOptions.cs
index c812b6862d..facdb70465 100644
--- a/src/Stripe.net/Services/ShippingRates/ShippingRateDeliveryEstimateOptions.cs
+++ b/src/Stripe.net/Services/ShippingRates/ShippingRateDeliveryEstimateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ShippingRateDeliveryEstimateOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class ShippingRateDeliveryEstimateOptions : INestedOptions
         /// infinite.
         /// </summary>
         [JsonProperty("maximum")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("maximum")]
+#endif
         public ShippingRateDeliveryEstimateMaximumOptions Maximum { get; set; }
 
         /// <summary>
         /// The lower bound of the estimated range. If empty, represents no lower bound.
         /// </summary>
         [JsonProperty("minimum")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("minimum")]
+#endif
         public ShippingRateDeliveryEstimateMinimumOptions Minimum { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/ShippingRates/ShippingRateFixedAmountCurrencyOptionsOptions.cs b/src/Stripe.net/Services/ShippingRates/ShippingRateFixedAmountCurrencyOptionsOptions.cs
index 4042854e03..7fea014f5f 100644
--- a/src/Stripe.net/Services/ShippingRates/ShippingRateFixedAmountCurrencyOptionsOptions.cs
+++ b/src/Stripe.net/Services/ShippingRates/ShippingRateFixedAmountCurrencyOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ShippingRateFixedAmountCurrencyOptionsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class ShippingRateFixedAmountCurrencyOptionsOptions : INestedOptions
         /// A non-negative integer in cents representing how much to charge.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class ShippingRateFixedAmountCurrencyOptionsOptions : INestedOptions
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/ShippingRates/ShippingRateFixedAmountOptions.cs b/src/Stripe.net/Services/ShippingRates/ShippingRateFixedAmountOptions.cs
index b251ec86cf..8a466c9fd4 100644
--- a/src/Stripe.net/Services/ShippingRates/ShippingRateFixedAmountOptions.cs
+++ b/src/Stripe.net/Services/ShippingRates/ShippingRateFixedAmountOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ShippingRateFixedAmountOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class ShippingRateFixedAmountOptions : INestedOptions
         /// A non-negative integer in cents representing how much to charge.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class ShippingRateFixedAmountOptions : INestedOptions
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class ShippingRateFixedAmountOptions : INestedOptions
         /// code</a> and a <a href="https://stripe.com/docs/currencies">supported currency</a>.
         /// </summary>
         [JsonProperty("currency_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency_options")]
+#endif
         public Dictionary<string, ShippingRateFixedAmountCurrencyOptionsOptions> CurrencyOptions { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/ShippingRates/ShippingRateListOptions.cs b/src/Stripe.net/Services/ShippingRates/ShippingRateListOptions.cs
index 2c53d6c7bc..1e6eed3276 100644
--- a/src/Stripe.net/Services/ShippingRates/ShippingRateListOptions.cs
+++ b/src/Stripe.net/Services/ShippingRates/ShippingRateListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ShippingRateListOptions : ListOptionsWithCreated
     {
@@ -9,12 +12,18 @@ public class ShippingRateListOptions : ListOptionsWithCreated
         /// Only return shipping rates that are active or inactive.
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool? Active { get; set; }
 
         /// <summary>
         /// Only return shipping rates for the given currency.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/ShippingRates/ShippingRateService.cs b/src/Stripe.net/Services/ShippingRates/ShippingRateService.cs
index 318846a22c..d464462081 100644
--- a/src/Stripe.net/Services/ShippingRates/ShippingRateService.cs
+++ b/src/Stripe.net/Services/ShippingRates/ShippingRateService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class ShippingRateService : Service<ShippingRate>,
+    public class ShippingRateService : Service,
         ICreatable<ShippingRate, ShippingRateCreateOptions>,
         IListable<ShippingRate, ShippingRateListOptions>,
         IRetrievable<ShippingRate, ShippingRateGetOptions>,
diff --git a/src/Stripe.net/Services/ShippingRates/ShippingRateUpdateOptions.cs b/src/Stripe.net/Services/ShippingRates/ShippingRateUpdateOptions.cs
index af2d2598cb..d3cf5f4e5b 100644
--- a/src/Stripe.net/Services/ShippingRates/ShippingRateUpdateOptions.cs
+++ b/src/Stripe.net/Services/ShippingRates/ShippingRateUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ShippingRateUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -10,6 +13,9 @@ public class ShippingRateUpdateOptions : BaseOptions, IHasMetadata
         /// Whether the shipping rate can be used for new purchases. Defaults to <c>true</c>.
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool? Active { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class ShippingRateUpdateOptions : BaseOptions, IHasMetadata
         /// <c>fixed_amount</c>.
         /// </summary>
         [JsonProperty("fixed_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amount")]
+#endif
         public ShippingRateFixedAmountOptions FixedAmount { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class ShippingRateUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -34,6 +46,9 @@ public class ShippingRateUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Sigma/ScheduledQueryRuns/ScheduledQueryRunService.cs b/src/Stripe.net/Services/Sigma/ScheduledQueryRuns/ScheduledQueryRunService.cs
index 8798deef9d..0bf95f2724 100644
--- a/src/Stripe.net/Services/Sigma/ScheduledQueryRuns/ScheduledQueryRunService.cs
+++ b/src/Stripe.net/Services/Sigma/ScheduledQueryRuns/ScheduledQueryRunService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Sigma
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class ScheduledQueryRunService : Service<ScheduledQueryRun>,
+    public class ScheduledQueryRunService : Service,
         IListable<ScheduledQueryRun, ScheduledQueryRunListOptions>,
         IRetrievable<ScheduledQueryRun, ScheduledQueryRunGetOptions>
     {
diff --git a/src/Stripe.net/Services/Skus/InventoryOptions.cs b/src/Stripe.net/Services/Skus/InventoryOptions.cs
index 5b956ba140..38a210c9c6 100644
--- a/src/Stripe.net/Services/Skus/InventoryOptions.cs
+++ b/src/Stripe.net/Services/Skus/InventoryOptions.cs
@@ -1,16 +1,28 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InventoryOptions : INestedOptions
     {
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SourceTransactions/SourceTransactionService.cs b/src/Stripe.net/Services/SourceTransactions/SourceTransactionService.cs
index 16fd1d42af..deae69eb0f 100644
--- a/src/Stripe.net/Services/SourceTransactions/SourceTransactionService.cs
+++ b/src/Stripe.net/Services/SourceTransactions/SourceTransactionService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public partial class SourceTransactionService : ServiceNested<SourceTransaction>,
+    public partial class SourceTransactionService : Service,
         INestedListable<SourceTransaction, SourceTransactionListOptions>
     {
         public SourceTransactionService()
diff --git a/src/Stripe.net/Services/Sources/SourceAcssDebitCreateOptions.cs b/src/Stripe.net/Services/Sources/SourceAcssDebitCreateOptions.cs
index 216ecc627b..16fac3d7d7 100644
--- a/src/Stripe.net/Services/Sources/SourceAcssDebitCreateOptions.cs
+++ b/src/Stripe.net/Services/Sources/SourceAcssDebitCreateOptions.cs
@@ -1,16 +1,28 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceAcssDebitCreateOptions : INestedOptions
     {
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         [JsonProperty("category")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("category")]
+#endif
         public string Category { get; set; }
 
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Sources/SourceAttachOptions.cs b/src/Stripe.net/Services/Sources/SourceAttachOptions.cs
index 3e538336a5..6ced21d8a9 100644
--- a/src/Stripe.net/Services/Sources/SourceAttachOptions.cs
+++ b/src/Stripe.net/Services/Sources/SourceAttachOptions.cs
@@ -2,13 +2,22 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceAttachOptions : BaseOptions
     {
         [JsonProperty("source")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source")]
+#endif
         public string Source { get; set; }
 
         [JsonProperty("validate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("validate")]
+#endif
         public bool? Validate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Sources/SourceAuBecsDebitCreateOptions.cs b/src/Stripe.net/Services/Sources/SourceAuBecsDebitCreateOptions.cs
index 7070ceaa02..a7b61fa29b 100644
--- a/src/Stripe.net/Services/Sources/SourceAuBecsDebitCreateOptions.cs
+++ b/src/Stripe.net/Services/Sources/SourceAuBecsDebitCreateOptions.cs
@@ -1,13 +1,22 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceAuBecsDebitCreateOptions : INestedOptions
     {
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         [JsonProperty("bsb_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bsb_number")]
+#endif
         public string BsbNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Sources/SourceBancontactCreateOptions.cs b/src/Stripe.net/Services/Sources/SourceBancontactCreateOptions.cs
index 0e73d2280c..e3f9d2f77e 100644
--- a/src/Stripe.net/Services/Sources/SourceBancontactCreateOptions.cs
+++ b/src/Stripe.net/Services/Sources/SourceBancontactCreateOptions.cs
@@ -1,10 +1,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceBancontactCreateOptions : INestedOptions
     {
         [JsonProperty("preferred_language")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_language")]
+#endif
         public string PreferredLanguage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Sources/SourceCardOptions.cs b/src/Stripe.net/Services/Sources/SourceCardOptions.cs
index 025bea68a2..785d2f0364 100644
--- a/src/Stripe.net/Services/Sources/SourceCardOptions.cs
+++ b/src/Stripe.net/Services/Sources/SourceCardOptions.cs
@@ -3,43 +3,82 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceCardOptions : INestedOptions, IHasMetadata
     {
         [JsonProperty("address_city")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_city")]
+#endif
         public string AddressCity { get; set; }
 
         [JsonProperty("address_country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_country")]
+#endif
         public string AddressCountry { get; set; }
 
         [JsonProperty("address_line1")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_line1")]
+#endif
         public string AddressLine1 { get; set; }
 
         [JsonProperty("address_line2")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_line2")]
+#endif
         public string AddressLine2 { get; set; }
 
         [JsonProperty("address_state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_state")]
+#endif
         public string AddressState { get; set; }
 
         [JsonProperty("address_zip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_zip")]
+#endif
         public string AddressZip { get; set; }
 
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         [JsonProperty("cvc")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cvc")]
+#endif
         public string Cvc { get; set; }
 
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public long? ExpMonth { get; set; }
 
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public long? ExpYear { get; set; }
 
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         [JsonProperty("number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("number")]
+#endif
         public string Number { get; set; }
 
         /// <summary>
@@ -48,6 +87,9 @@ public class SourceCardOptions : INestedOptions, IHasMetadata
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Sources/SourceCreateOptions.cs b/src/Stripe.net/Services/Sources/SourceCreateOptions.cs
index ea2e2e8740..54b4ffbc97 100644
--- a/src/Stripe.net/Services/Sources/SourceCreateOptions.cs
+++ b/src/Stripe.net/Services/Sources/SourceCreateOptions.cs
@@ -2,56 +2,108 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
+
     using Stripe.Infrastructure;
 
     public class SourceCreateOptions : BaseOptions, IHasMetadata
     {
         [JsonProperty("alipay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alipay")]
+#endif
         public string Alipay { get; set; }
 
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         [JsonProperty("flow")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flow")]
+#endif
         public string Flow { get; set; }
 
         [JsonProperty("mandate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate")]
+#endif
         public SourceMandateOptions Mandate { get; set; }
 
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         [JsonProperty("original_source")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("original_source")]
+#endif
         public string OriginalSource { get; set; }
 
         [JsonProperty("owner")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("owner")]
+#endif
         public SourceOwnerOptions Owner { get; set; }
 
         [JsonProperty("receiver")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("receiver")]
+#endif
         public SourceReceiverOptions Receiver { get; set; }
 
         [JsonProperty("redirect")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("redirect")]
+#endif
         public SourceRedirectOptions Redirect { get; set; }
 
         [JsonProperty("source_order")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source_order")]
+#endif
         public SourceSourceOrderOptions SourceOrder { get; set; }
 
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
 
         [JsonProperty("token")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("token")]
+#endif
         public string Token { get; set; }
 
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         [JsonProperty("usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("usage")]
+#endif
         public string Usage { get; set; }
 
         /*
@@ -59,34 +111,65 @@ Below we group all Source type specific paramters
         */
 
         [JsonProperty("acss_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acss_debit")]
+#endif
         public SourceAcssDebitCreateOptions AcssDebit { get; set; }
 
         [JsonProperty("au_becs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("au_becs_debit")]
+#endif
         public SourceAuBecsDebitCreateOptions AuBecsDebit { get; set; }
 
         [JsonProperty("bancontact")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bancontact")]
+#endif
         public SourceBancontactCreateOptions Bancontact { get; set; }
 
         [JsonProperty("card")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<string, SourceCardOptions> Card { get; set; }
 
         [JsonProperty("ideal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ideal")]
+#endif
         public SourceIdealCreateOptions Ideal { get; set; }
 
         [JsonProperty("klarna")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("klarna")]
+#endif
         public SourceKlarnaCreateOptions Klarna { get; set; }
 
         [JsonProperty("sepa_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_debit")]
+#endif
         public SourceSepaDebitCreateOptions SepaDebit { get; set; }
 
         [JsonProperty("sofort")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sofort")]
+#endif
         public SourceSofortCreateOptions Sofort { get; set; }
 
         [JsonProperty("three_d_secure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("three_d_secure")]
+#endif
         public SourceThreeDSecureCreateOptions ThreeDSecure { get; set; }
 
         [JsonProperty("wechat")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wechat")]
+#endif
         public SourceWechatCreateOptions Wechat { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Sources/SourceGetOptions.cs b/src/Stripe.net/Services/Sources/SourceGetOptions.cs
index 9d30e75423..a9fd018ebf 100644
--- a/src/Stripe.net/Services/Sources/SourceGetOptions.cs
+++ b/src/Stripe.net/Services/Sources/SourceGetOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceGetOptions : BaseOptions
     {
@@ -10,6 +13,9 @@ public class SourceGetOptions : BaseOptions
         /// source.
         /// </summary>
         [JsonProperty("client_secret")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("client_secret")]
+#endif
         public string ClientSecret { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Sources/SourceIdealCreateOptions.cs b/src/Stripe.net/Services/Sources/SourceIdealCreateOptions.cs
index 8d8e48ee0c..5d6898d78b 100644
--- a/src/Stripe.net/Services/Sources/SourceIdealCreateOptions.cs
+++ b/src/Stripe.net/Services/Sources/SourceIdealCreateOptions.cs
@@ -1,10 +1,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceIdealCreateOptions : INestedOptions
     {
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Sources/SourceKlarnaCreateOptions.cs b/src/Stripe.net/Services/Sources/SourceKlarnaCreateOptions.cs
index ff55a87031..0e30bd7af4 100644
--- a/src/Stripe.net/Services/Sources/SourceKlarnaCreateOptions.cs
+++ b/src/Stripe.net/Services/Sources/SourceKlarnaCreateOptions.cs
@@ -1,88 +1,172 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceKlarnaCreateOptions : INestedOptions
     {
         [JsonProperty("background_image_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("background_image_url")]
+#endif
         public string BackgroundImageUrl { get; set; }
 
         [JsonProperty("client_token")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("client_token")]
+#endif
         public string ClientToken { get; set; }
 
         [JsonProperty("first_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_name")]
+#endif
         public string FirstName { get; set; }
 
         [JsonProperty("last_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_name")]
+#endif
         public string LastName { get; set; }
 
         [JsonProperty("locale")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("locale")]
+#endif
         public string Locale { get; set; }
 
         [JsonProperty("logo_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("logo_url")]
+#endif
         public string LogoUrl { get; set; }
 
         [JsonProperty("page_title")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("page_title")]
+#endif
         public string PageTitle { get; set; }
 
         [JsonProperty("pay_later_asset_urls_descriptive")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_later_asset_urls_descriptive")]
+#endif
         public string PayLaterAssetUrlsDescriptive { get; set; }
 
         [JsonProperty("pay_later_asset_urls_standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_later_asset_urls_standard")]
+#endif
         public string PayLaterAssetUrlsStandard { get; set; }
 
         [JsonProperty("pay_later_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_later_name")]
+#endif
         public string PayLaterName { get; set; }
 
         [JsonProperty("pay_later_redirect_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_later_redirect_url")]
+#endif
         public string PayLaterRedirectUrl { get; set; }
 
         [JsonProperty("pay_now_asset_urls_descriptive")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_now_asset_urls_descriptive")]
+#endif
         public string PayNowAssetUrlsDescriptive { get; set; }
 
         [JsonProperty("pay_now_asset_urls_standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_now_asset_urls_standard")]
+#endif
         public string PayNowAssetUrlsStandard { get; set; }
 
         [JsonProperty("pay_now_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_now_name")]
+#endif
         public string PayNowName { get; set; }
 
         [JsonProperty("pay_now_redirect_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_now_redirect_url")]
+#endif
         public string PayNowRedirectUrl { get; set; }
 
         [JsonProperty("pay_over_time_asset_urls_descriptive")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_over_time_asset_urls_descriptive")]
+#endif
         public string PayOverTimeAssetUrlsDescriptive { get; set; }
 
         [JsonProperty("pay_over_time_asset_urls_standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_over_time_asset_urls_standard")]
+#endif
         public string PayOverTimeAssetUrlsStandard { get; set; }
 
         [JsonProperty("pay_over_time_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_over_time_name")]
+#endif
         public string PayOverTimeName { get; set; }
 
         [JsonProperty("pay_over_time_redirect_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_over_time_redirect_url")]
+#endif
         public string PayOverTimeRedirectUrl { get; set; }
 
         [JsonProperty("payment_method_categories")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_categories")]
+#endif
         public string PaymentMethodCategories { get; set; }
 
         [JsonProperty("product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product")]
+#endif
         public string Product { get; set; }
 
         [JsonProperty("purchase_country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("purchase_country")]
+#endif
         public string PurchaseCountry { get; set; }
 
         [JsonProperty("purchase_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("purchase_type")]
+#endif
         public string PurchaseType { get; set; }
 
         [JsonProperty("redirect_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("redirect_url")]
+#endif
         public string RedirectUrl { get; set; }
 
         [JsonProperty("shipping_delay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_delay")]
+#endif
         public long? ShippingDelay { get; set; }
 
         [JsonProperty("shipping_first_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_first_name")]
+#endif
         public string ShippingFirstName { get; set; }
 
         [JsonProperty("shipping_last_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_last_name")]
+#endif
         public string ShippingLastName { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Sources/SourceListOptions.cs b/src/Stripe.net/Services/Sources/SourceListOptions.cs
index 3c6e19d5ad..3ba4c1afa4 100644
--- a/src/Stripe.net/Services/Sources/SourceListOptions.cs
+++ b/src/Stripe.net/Services/Sources/SourceListOptions.cs
@@ -1,13 +1,26 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using Stripe.Infrastructure;
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SourceListOptions : ListOptions
     {
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object")]
+#endif
         internal string Object => "source";
 
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Sources/SourceMandateAcceptanceOfflineOptions.cs b/src/Stripe.net/Services/Sources/SourceMandateAcceptanceOfflineOptions.cs
index 5355797c13..dab6524cfc 100644
--- a/src/Stripe.net/Services/Sources/SourceMandateAcceptanceOfflineOptions.cs
+++ b/src/Stripe.net/Services/Sources/SourceMandateAcceptanceOfflineOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceMandateAcceptanceOfflineOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SourceMandateAcceptanceOfflineOptions : INestedOptions
         /// <c>type</c> is <c>offline</c>.
         /// </summary>
         [JsonProperty("contact_email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("contact_email")]
+#endif
         public string ContactEmail { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Sources/SourceMandateAcceptanceOnlineOptions.cs b/src/Stripe.net/Services/Sources/SourceMandateAcceptanceOnlineOptions.cs
index d7a13bed2f..ef2af8afb8 100644
--- a/src/Stripe.net/Services/Sources/SourceMandateAcceptanceOnlineOptions.cs
+++ b/src/Stripe.net/Services/Sources/SourceMandateAcceptanceOnlineOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceMandateAcceptanceOnlineOptions : INestedOptions
     {
@@ -13,12 +16,19 @@ public class SourceMandateAcceptanceOnlineOptions : INestedOptions
         /// </summary>
         [JsonProperty("date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? Date { get; set; }
 
         /// <summary>
         /// The IP address from which the mandate was accepted or refused by the customer.
         /// </summary>
         [JsonProperty("ip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip")]
+#endif
         public string Ip { get; set; }
 
         /// <summary>
@@ -26,6 +36,9 @@ public class SourceMandateAcceptanceOnlineOptions : INestedOptions
         /// customer.
         /// </summary>
         [JsonProperty("user_agent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_agent")]
+#endif
         public string UserAgent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Sources/SourceMandateAcceptanceOptions.cs b/src/Stripe.net/Services/Sources/SourceMandateAcceptanceOptions.cs
index 1a233d5ab8..6e599f32b7 100644
--- a/src/Stripe.net/Services/Sources/SourceMandateAcceptanceOptions.cs
+++ b/src/Stripe.net/Services/Sources/SourceMandateAcceptanceOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceMandateAcceptanceOptions : INestedOptions
     {
@@ -13,12 +16,19 @@ public class SourceMandateAcceptanceOptions : INestedOptions
         /// </summary>
         [JsonProperty("date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? Date { get; set; }
 
         /// <summary>
         /// The IP address from which the mandate was accepted or refused by the customer.
         /// </summary>
         [JsonProperty("ip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip")]
+#endif
         public string Ip { get; set; }
 
         /// <summary>
@@ -26,6 +36,9 @@ public class SourceMandateAcceptanceOptions : INestedOptions
         /// <c>mandate[type]</c> is <c>offline</c>.
         /// </summary>
         [JsonProperty("offline")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("offline")]
+#endif
         public SourceMandateAcceptanceOfflineOptions Offline { get; set; }
 
         /// <summary>
@@ -33,6 +46,9 @@ public class SourceMandateAcceptanceOptions : INestedOptions
         /// <c>mandate[type]</c> is <c>online</c>.
         /// </summary>
         [JsonProperty("online")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("online")]
+#endif
         public SourceMandateAcceptanceOnlineOptions Online { get; set; }
 
         /// <summary>
@@ -41,6 +57,9 @@ public class SourceMandateAcceptanceOptions : INestedOptions
         /// One of: <c>accepted</c>, <c>pending</c>, <c>refused</c>, or <c>revoked</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -49,6 +68,9 @@ public class SourceMandateAcceptanceOptions : INestedOptions
         /// One of: <c>offline</c>, or <c>online</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
@@ -56,6 +78,9 @@ public class SourceMandateAcceptanceOptions : INestedOptions
         /// customer.
         /// </summary>
         [JsonProperty("user_agent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_agent")]
+#endif
         public string UserAgent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Sources/SourceMandateOptions.cs b/src/Stripe.net/Services/Sources/SourceMandateOptions.cs
index 1b631ad158..28a77e839a 100644
--- a/src/Stripe.net/Services/Sources/SourceMandateOptions.cs
+++ b/src/Stripe.net/Services/Sources/SourceMandateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceMandateOptions : INestedOptions
     {
@@ -10,18 +13,27 @@ public class SourceMandateOptions : INestedOptions
         /// customer.
         /// </summary>
         [JsonProperty("acceptance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acceptance")]
+#endif
         public SourceMandateAcceptanceOptions Acceptance { get; set; }
 
         /// <summary>
         /// The amount specified by the mandate. (Leave null for a mandate covering all amounts).
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
         /// The currency specified by the mandate. (Must match <c>currency</c> of the source).
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -31,6 +43,9 @@ public class SourceMandateOptions : INestedOptions
         /// One of: <c>one_time</c>, <c>scheduled</c>, or <c>variable</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
 
         /// <summary>
@@ -44,6 +59,9 @@ public class SourceMandateOptions : INestedOptions
         /// <c>stripe_email</c>.
         /// </summary>
         [JsonProperty("notification_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("notification_method")]
+#endif
         public string NotificationMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Sources/SourceOwnerOptions.cs b/src/Stripe.net/Services/Sources/SourceOwnerOptions.cs
index 817b0b3874..22b42dfab6 100644
--- a/src/Stripe.net/Services/Sources/SourceOwnerOptions.cs
+++ b/src/Stripe.net/Services/Sources/SourceOwnerOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceOwnerOptions : INestedOptions
     {
@@ -9,24 +12,36 @@ public class SourceOwnerOptions : INestedOptions
         /// Owner's address.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public AddressOptions Address { get; set; }
 
         /// <summary>
         /// Owner's email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// Owner's full name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// Owner's phone number.
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Sources/SourceReceiverOptions.cs b/src/Stripe.net/Services/Sources/SourceReceiverOptions.cs
index 55db04afd7..ed19fa1539 100644
--- a/src/Stripe.net/Services/Sources/SourceReceiverOptions.cs
+++ b/src/Stripe.net/Services/Sources/SourceReceiverOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceReceiverOptions : INestedOptions
     {
@@ -14,6 +17,9 @@ public class SourceReceiverOptions : INestedOptions
         /// One of: <c>email</c>, <c>manual</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("refund_attributes_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_attributes_method")]
+#endif
         public string RefundAttributesMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Sources/SourceRedirectOptions.cs b/src/Stripe.net/Services/Sources/SourceRedirectOptions.cs
index 6ecc8a170d..1e0b9080f2 100644
--- a/src/Stripe.net/Services/Sources/SourceRedirectOptions.cs
+++ b/src/Stripe.net/Services/Sources/SourceRedirectOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceRedirectOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SourceRedirectOptions : INestedOptions
         /// payment. It can use your application URI scheme in the context of a mobile application.
         /// </summary>
         [JsonProperty("return_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_url")]
+#endif
         public string ReturnUrl { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Sources/SourceSepaDebitCreateOptions.cs b/src/Stripe.net/Services/Sources/SourceSepaDebitCreateOptions.cs
index 4f006422d8..5b280e3a04 100644
--- a/src/Stripe.net/Services/Sources/SourceSepaDebitCreateOptions.cs
+++ b/src/Stripe.net/Services/Sources/SourceSepaDebitCreateOptions.cs
@@ -1,13 +1,22 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceSepaDebitCreateOptions : INestedOptions
     {
         [JsonProperty("iban")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iban")]
+#endif
         public string Iban { get; set; }
 
         [JsonProperty("ideal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ideal")]
+#endif
         public string Ideal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Sources/SourceSofortCreateOptions.cs b/src/Stripe.net/Services/Sources/SourceSofortCreateOptions.cs
index f4257d246b..c20b27f3a7 100644
--- a/src/Stripe.net/Services/Sources/SourceSofortCreateOptions.cs
+++ b/src/Stripe.net/Services/Sources/SourceSofortCreateOptions.cs
@@ -1,10 +1,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceSofortCreateOptions : INestedOptions
     {
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Sources/SourceSourceOrderItemOptions.cs b/src/Stripe.net/Services/Sources/SourceSourceOrderItemOptions.cs
index 43996884d8..020c156b46 100644
--- a/src/Stripe.net/Services/Sources/SourceSourceOrderItemOptions.cs
+++ b/src/Stripe.net/Services/Sources/SourceSourceOrderItemOptions.cs
@@ -2,22 +2,37 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceSourceOrderItemOptions : INestedOptions
     {
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// The ID of the SKU being ordered.
         /// </summary>
         [JsonProperty("parent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("parent")]
+#endif
         public string Parent { get; set; }
 
         /// <summary>
@@ -25,12 +40,18 @@ public class SourceSourceOrderItemOptions : INestedOptions
         /// instances of the SKU to be ordered.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         /// <summary>
         /// One of: <c>discount</c>, <c>shipping</c>, <c>sku</c>, or <c>tax</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Sources/SourceSourceOrderOptions.cs b/src/Stripe.net/Services/Sources/SourceSourceOrderOptions.cs
index 7aa53b361d..ec9cdcd719 100644
--- a/src/Stripe.net/Services/Sources/SourceSourceOrderOptions.cs
+++ b/src/Stripe.net/Services/Sources/SourceSourceOrderOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceSourceOrderOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SourceSourceOrderOptions : INestedOptions
         /// List of items constituting the order.
         /// </summary>
         [JsonProperty("items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("items")]
+#endif
         public List<SourceSourceOrderItemOptions> Items { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class SourceSourceOrderOptions : INestedOptions
         /// <c>shippable</c> set to true.
         /// </summary>
         [JsonProperty("shipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping")]
+#endif
         public ChargeShippingOptions Shipping { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Sources/SourceThreeDSecureCreateOptions.cs b/src/Stripe.net/Services/Sources/SourceThreeDSecureCreateOptions.cs
index 492e51005f..fc752902b0 100644
--- a/src/Stripe.net/Services/Sources/SourceThreeDSecureCreateOptions.cs
+++ b/src/Stripe.net/Services/Sources/SourceThreeDSecureCreateOptions.cs
@@ -1,13 +1,22 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceThreeDSecureCreateOptions : INestedOptions
     {
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public string Card { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Sources/SourceUpdateOptions.cs b/src/Stripe.net/Services/Sources/SourceUpdateOptions.cs
index fb4962bfbe..a647c469d5 100644
--- a/src/Stripe.net/Services/Sources/SourceUpdateOptions.cs
+++ b/src/Stripe.net/Services/Sources/SourceUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -10,9 +13,15 @@ public class SourceUpdateOptions : BaseOptions, IHasMetadata
         /// Amount associated with the source.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public SourceCardOptions Card { get; set; }
 
         /// <summary>
@@ -20,6 +29,9 @@ public class SourceUpdateOptions : BaseOptions, IHasMetadata
         /// debits) as well as its acceptance status.
         /// </summary>
         [JsonProperty("mandate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate")]
+#endif
         public SourceMandateOptions Mandate { get; set; }
 
         /// <summary>
@@ -29,6 +41,9 @@ public class SourceUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -36,6 +51,9 @@ public class SourceUpdateOptions : BaseOptions, IHasMetadata
         /// particular source types.
         /// </summary>
         [JsonProperty("owner")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("owner")]
+#endif
         public SourceOwnerOptions Owner { get; set; }
 
         /// <summary>
@@ -43,6 +61,9 @@ public class SourceUpdateOptions : BaseOptions, IHasMetadata
         /// transactional credit (for example Klarna) sources before you can charge it.
         /// </summary>
         [JsonProperty("source_order")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source_order")]
+#endif
         public SourceSourceOrderOptions SourceOrder { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Sources/SourceVerifyOptions.cs b/src/Stripe.net/Services/Sources/SourceVerifyOptions.cs
index c8a86c7570..dd385ca220 100644
--- a/src/Stripe.net/Services/Sources/SourceVerifyOptions.cs
+++ b/src/Stripe.net/Services/Sources/SourceVerifyOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SourceVerifyOptions : BaseOptions
     {
@@ -10,6 +13,9 @@ public class SourceVerifyOptions : BaseOptions
         /// The values needed to verify the source.
         /// </summary>
         [JsonProperty("values")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("values")]
+#endif
         public List<string> Values { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionItemUsageRecordSummaries/SubscriptionItemUsageRecordSummaryService.cs b/src/Stripe.net/Services/SubscriptionItemUsageRecordSummaries/SubscriptionItemUsageRecordSummaryService.cs
index 7be50f7a8b..69d6ece20a 100644
--- a/src/Stripe.net/Services/SubscriptionItemUsageRecordSummaries/SubscriptionItemUsageRecordSummaryService.cs
+++ b/src/Stripe.net/Services/SubscriptionItemUsageRecordSummaries/SubscriptionItemUsageRecordSummaryService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class SubscriptionItemUsageRecordSummaryService : ServiceNested<UsageRecordSummary>,
+    public class SubscriptionItemUsageRecordSummaryService : Service,
         INestedListable<UsageRecordSummary, SubscriptionItemUsageRecordSummaryListOptions>
     {
         public SubscriptionItemUsageRecordSummaryService()
diff --git a/src/Stripe.net/Services/SubscriptionItemUsageRecords/SubscriptionItemUsageRecordCreateOptions.cs b/src/Stripe.net/Services/SubscriptionItemUsageRecords/SubscriptionItemUsageRecordCreateOptions.cs
index a5875e0906..51983474ed 100644
--- a/src/Stripe.net/Services/SubscriptionItemUsageRecords/SubscriptionItemUsageRecordCreateOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionItemUsageRecords/SubscriptionItemUsageRecordCreateOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionItemUsageRecordCreateOptions : BaseOptions
     {
@@ -17,12 +20,18 @@ public class SubscriptionItemUsageRecordCreateOptions : BaseOptions
         /// One of: <c>increment</c>, or <c>set</c>.
         /// </summary>
         [JsonProperty("action")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("action")]
+#endif
         public string Action { get; set; }
 
         /// <summary>
         /// The usage quantity for the specified timestamp.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         /// <summary>
@@ -33,6 +42,10 @@ public class SubscriptionItemUsageRecordCreateOptions : BaseOptions
         /// </summary>
         [JsonProperty("timestamp")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("timestamp")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, SubscriptionItemUsageRecordTimestamp> Timestamp { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionItemUsageRecords/SubscriptionItemUsageRecordService.cs b/src/Stripe.net/Services/SubscriptionItemUsageRecords/SubscriptionItemUsageRecordService.cs
index ce3ef6ef9f..66edfb62e8 100644
--- a/src/Stripe.net/Services/SubscriptionItemUsageRecords/SubscriptionItemUsageRecordService.cs
+++ b/src/Stripe.net/Services/SubscriptionItemUsageRecords/SubscriptionItemUsageRecordService.cs
@@ -7,7 +7,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class SubscriptionItemUsageRecordService : ServiceNested<UsageRecord>,
+    public class SubscriptionItemUsageRecordService : Service,
         INestedCreatable<UsageRecord, SubscriptionItemUsageRecordCreateOptions>
     {
         public SubscriptionItemUsageRecordService()
diff --git a/src/Stripe.net/Services/SubscriptionItems/SubscriptionItemCreateOptions.cs b/src/Stripe.net/Services/SubscriptionItems/SubscriptionItemCreateOptions.cs
index b96fe9afe3..fa79fe592f 100644
--- a/src/Stripe.net/Services/SubscriptionItems/SubscriptionItemCreateOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionItems/SubscriptionItemCreateOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionItemCreateOptions : BaseOptions, IHasMetadata
     {
@@ -14,12 +17,18 @@ public class SubscriptionItemCreateOptions : BaseOptions, IHasMetadata
         /// thresholds.
         /// </summary>
         [JsonProperty("billing_thresholds")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_thresholds")]
+#endif
         public SubscriptionItemBillingThresholdsOptions BillingThresholds { get; set; }
 
         /// <summary>
         /// The coupons to redeem into discounts for the subscription item.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<SubscriptionItemDiscountOptions> Discounts { get; set; }
 
         /// <summary>
@@ -29,6 +38,9 @@ public class SubscriptionItemCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -63,18 +75,27 @@ public class SubscriptionItemCreateOptions : BaseOptions, IHasMetadata
         /// or <c>pending_if_incomplete</c>.
         /// </summary>
         [JsonProperty("payment_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_behavior")]
+#endif
         public string PaymentBehavior { get; set; }
 
         /// <summary>
         /// The identifier of the plan to add to the subscription.
         /// </summary>
         [JsonProperty("plan")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("plan")]
+#endif
         public string Plan { get; set; }
 
         /// <summary>
         /// The ID of the price object.
         /// </summary>
         [JsonProperty("price")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price")]
+#endif
         public string Price { get; set; }
 
         /// <summary>
@@ -82,6 +103,9 @@ public class SubscriptionItemCreateOptions : BaseOptions, IHasMetadata
         /// object inline.
         /// </summary>
         [JsonProperty("price_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price_data")]
+#endif
         public SubscriptionItemPriceDataOptions PriceData { get; set; }
 
         /// <summary>
@@ -93,6 +117,9 @@ public class SubscriptionItemCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>always_invoice</c>, <c>create_prorations</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("proration_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("proration_behavior")]
+#endif
         public string ProrationBehavior { get; set; }
 
         /// <summary>
@@ -103,18 +130,28 @@ public class SubscriptionItemCreateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("proration_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("proration_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ProrationDate { get; set; }
 
         /// <summary>
         /// The quantity you'd like to apply to the subscription item you're creating.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         /// <summary>
         /// The identifier of the subscription to modify.
         /// </summary>
         [JsonProperty("subscription")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription")]
+#endif
         public string Subscription { get; set; }
 
         /// <summary>
@@ -125,6 +162,9 @@ public class SubscriptionItemCreateOptions : BaseOptions, IHasMetadata
         /// tax rates.
         /// </summary>
         [JsonProperty("tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rates")]
+#endif
         public List<string> TaxRates { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionItems/SubscriptionItemDeleteOptions.cs b/src/Stripe.net/Services/SubscriptionItems/SubscriptionItemDeleteOptions.cs
index b100f53255..68fa91b190 100644
--- a/src/Stripe.net/Services/SubscriptionItems/SubscriptionItemDeleteOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionItems/SubscriptionItemDeleteOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionItemDeleteOptions : BaseOptions
     {
@@ -12,6 +15,9 @@ public class SubscriptionItemDeleteOptions : BaseOptions
         /// <c>usage_type</c> is <c>metered</c>.
         /// </summary>
         [JsonProperty("clear_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("clear_usage")]
+#endif
         public bool? ClearUsage { get; set; }
 
         /// <summary>
@@ -23,6 +29,9 @@ public class SubscriptionItemDeleteOptions : BaseOptions
         /// One of: <c>always_invoice</c>, <c>create_prorations</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("proration_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("proration_behavior")]
+#endif
         public string ProrationBehavior { get; set; }
 
         /// <summary>
@@ -33,6 +42,10 @@ public class SubscriptionItemDeleteOptions : BaseOptions
         /// </summary>
         [JsonProperty("proration_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("proration_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ProrationDate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionItems/SubscriptionItemListOptions.cs b/src/Stripe.net/Services/SubscriptionItems/SubscriptionItemListOptions.cs
index 0abbac1fa1..8289ae9e93 100644
--- a/src/Stripe.net/Services/SubscriptionItems/SubscriptionItemListOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionItems/SubscriptionItemListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionItemListOptions : ListOptions
     {
@@ -9,6 +12,9 @@ public class SubscriptionItemListOptions : ListOptions
         /// The ID of the subscription whose items will be retrieved.
         /// </summary>
         [JsonProperty("subscription")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("subscription")]
+#endif
         public string Subscription { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionItems/SubscriptionItemService.cs b/src/Stripe.net/Services/SubscriptionItems/SubscriptionItemService.cs
index b320c83844..df81b874eb 100644
--- a/src/Stripe.net/Services/SubscriptionItems/SubscriptionItemService.cs
+++ b/src/Stripe.net/Services/SubscriptionItems/SubscriptionItemService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class SubscriptionItemService : Service<SubscriptionItem>,
+    public class SubscriptionItemService : Service,
         ICreatable<SubscriptionItem, SubscriptionItemCreateOptions>,
         IDeletable<SubscriptionItem, SubscriptionItemDeleteOptions>,
         IListable<SubscriptionItem, SubscriptionItemListOptions>,
diff --git a/src/Stripe.net/Services/SubscriptionItems/SubscriptionItemUpdateOptions.cs b/src/Stripe.net/Services/SubscriptionItems/SubscriptionItemUpdateOptions.cs
index 808fab0968..1c0e364795 100644
--- a/src/Stripe.net/Services/SubscriptionItems/SubscriptionItemUpdateOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionItems/SubscriptionItemUpdateOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionItemUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -14,12 +17,18 @@ public class SubscriptionItemUpdateOptions : BaseOptions, IHasMetadata
         /// thresholds.
         /// </summary>
         [JsonProperty("billing_thresholds")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_thresholds")]
+#endif
         public SubscriptionItemBillingThresholdsOptions BillingThresholds { get; set; }
 
         /// <summary>
         /// The coupons to redeem into discounts for the subscription item.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<SubscriptionItemDiscountOptions> Discounts { get; set; }
 
         /// <summary>
@@ -29,6 +38,9 @@ public class SubscriptionItemUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -36,6 +48,9 @@ public class SubscriptionItemUpdateOptions : BaseOptions, IHasMetadata
         /// Defaults to <c>false</c> (on-session).
         /// </summary>
         [JsonProperty("off_session")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("off_session")]
+#endif
         public bool? OffSession { get; set; }
 
         /// <summary>
@@ -70,12 +85,18 @@ public class SubscriptionItemUpdateOptions : BaseOptions, IHasMetadata
         /// or <c>pending_if_incomplete</c>.
         /// </summary>
         [JsonProperty("payment_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_behavior")]
+#endif
         public string PaymentBehavior { get; set; }
 
         /// <summary>
         /// The identifier of the new plan for this subscription item.
         /// </summary>
         [JsonProperty("plan")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("plan")]
+#endif
         public string Plan { get; set; }
 
         /// <summary>
@@ -84,6 +105,9 @@ public class SubscriptionItemUpdateOptions : BaseOptions, IHasMetadata
         /// <c>quantity</c> parameter is provided.
         /// </summary>
         [JsonProperty("price")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price")]
+#endif
         public string Price { get; set; }
 
         /// <summary>
@@ -91,6 +115,9 @@ public class SubscriptionItemUpdateOptions : BaseOptions, IHasMetadata
         /// object inline. One of <c>price</c> or <c>price_data</c> is required.
         /// </summary>
         [JsonProperty("price_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price_data")]
+#endif
         public SubscriptionItemPriceDataOptions PriceData { get; set; }
 
         /// <summary>
@@ -102,6 +129,9 @@ public class SubscriptionItemUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>always_invoice</c>, <c>create_prorations</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("proration_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("proration_behavior")]
+#endif
         public string ProrationBehavior { get; set; }
 
         /// <summary>
@@ -112,12 +142,19 @@ public class SubscriptionItemUpdateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("proration_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("proration_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ProrationDate { get; set; }
 
         /// <summary>
         /// The quantity you'd like to apply to the subscription item you're creating.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         /// <summary>
@@ -128,6 +165,9 @@ public class SubscriptionItemUpdateOptions : BaseOptions, IHasMetadata
         /// tax rates.
         /// </summary>
         [JsonProperty("tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rates")]
+#endif
         public List<string> TaxRates { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleCancelOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleCancelOptions.cs
index 017bb6f097..b82230ef27 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleCancelOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleCancelOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionScheduleCancelOptions : BaseOptions
     {
@@ -11,6 +14,9 @@ public class SubscriptionScheduleCancelOptions : BaseOptions
         /// items. Defaults to <c>true</c>.
         /// </summary>
         [JsonProperty("invoice_now")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_now")]
+#endif
         public bool? InvoiceNow { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class SubscriptionScheduleCancelOptions : BaseOptions
         /// prorated. Defaults to <c>true</c>.
         /// </summary>
         [JsonProperty("prorate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("prorate")]
+#endif
         public bool? Prorate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleCreateOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleCreateOptions.cs
index e9d93dcbec..b3a333dc31 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleCreateOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleCreateOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionScheduleCreateOptions : BaseOptions, IHasMetadata
     {
@@ -12,12 +15,18 @@ public class SubscriptionScheduleCreateOptions : BaseOptions, IHasMetadata
         /// The identifier of the customer to create the subscription schedule for.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
         /// Object representing the subscription schedule's default settings.
         /// </summary>
         [JsonProperty("default_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_settings")]
+#endif
         public SubscriptionScheduleDefaultSettingsOptions DefaultSettings { get; set; }
 
         /// <summary>
@@ -29,6 +38,9 @@ public class SubscriptionScheduleCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>cancel</c>, <c>none</c>, <c>release</c>, or <c>renew</c>.
         /// </summary>
         [JsonProperty("end_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end_behavior")]
+#endif
         public string EndBehavior { get; set; }
 
         /// <summary>
@@ -39,6 +51,9 @@ public class SubscriptionScheduleCreateOptions : BaseOptions, IHasMetadata
         /// with other modifications, we recommend making two separate API calls.
         /// </summary>
         [JsonProperty("from_subscription")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("from_subscription")]
+#endif
         public string FromSubscription { get; set; }
 
         /// <summary>
@@ -48,6 +63,9 @@ public class SubscriptionScheduleCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -56,6 +74,9 @@ public class SubscriptionScheduleCreateOptions : BaseOptions, IHasMetadata
         /// <c>end_date</c> of one phase will always equal the <c>start_date</c> of the next phase.
         /// </summary>
         [JsonProperty("phases")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phases")]
+#endif
         public List<SubscriptionSchedulePhaseOptions> Phases { get; set; }
 
         /// <summary>
@@ -66,6 +87,10 @@ public class SubscriptionScheduleCreateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("start_date")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("start_date")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, SubscriptionScheduleStartDate> StartDate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsAutomaticTaxLiabilityOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsAutomaticTaxLiabilityOptions.cs
index 2334d2a79e..8db2cdaed0 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsAutomaticTaxLiabilityOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsAutomaticTaxLiabilityOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionScheduleDefaultSettingsAutomaticTaxLiabilityOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SubscriptionScheduleDefaultSettingsAutomaticTaxLiabilityOptions : I
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public string Account { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class SubscriptionScheduleDefaultSettingsAutomaticTaxLiabilityOptions : I
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsAutomaticTaxOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsAutomaticTaxOptions.cs
index 8a57380138..73f1ae2092 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsAutomaticTaxOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsAutomaticTaxOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionScheduleDefaultSettingsAutomaticTaxOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SubscriptionScheduleDefaultSettingsAutomaticTaxOptions : INestedOpt
         /// invoices generated by the subscription.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class SubscriptionScheduleDefaultSettingsAutomaticTaxOptions : INestedOpt
         /// transaction is returned in the report of the connected account.
         /// </summary>
         [JsonProperty("liability")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("liability")]
+#endif
         public SubscriptionScheduleDefaultSettingsAutomaticTaxLiabilityOptions Liability { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsBillingThresholdsOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsBillingThresholdsOptions.cs
index 7a3d54e805..79b5304646 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsBillingThresholdsOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsBillingThresholdsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionScheduleDefaultSettingsBillingThresholdsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SubscriptionScheduleDefaultSettingsBillingThresholdsOptions : INest
         /// Monetary threshold that triggers the subscription to advance to a new billing period.
         /// </summary>
         [JsonProperty("amount_gte")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_gte")]
+#endif
         public long? AmountGte { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class SubscriptionScheduleDefaultSettingsBillingThresholdsOptions : INest
         /// threshold was last reached; otherwise, the value will remain unchanged.
         /// </summary>
         [JsonProperty("reset_billing_cycle_anchor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reset_billing_cycle_anchor")]
+#endif
         public bool? ResetBillingCycleAnchor { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsInvoiceSettingsIssuerOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsInvoiceSettingsIssuerOptions.cs
index 867d77000f..1b991d3618 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsInvoiceSettingsIssuerOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsInvoiceSettingsIssuerOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionScheduleDefaultSettingsInvoiceSettingsIssuerOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SubscriptionScheduleDefaultSettingsInvoiceSettingsIssuerOptions : I
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public string Account { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class SubscriptionScheduleDefaultSettingsInvoiceSettingsIssuerOptions : I
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsInvoiceSettingsOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsInvoiceSettingsOptions.cs
index bf8196307a..3edcfa9856 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsInvoiceSettingsOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsInvoiceSettingsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionScheduleDefaultSettingsInvoiceSettingsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class SubscriptionScheduleDefaultSettingsInvoiceSettingsOptions : INested
         /// generated by the subscription schedule.
         /// </summary>
         [JsonProperty("account_tax_ids")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_tax_ids")]
+#endif
         public List<string> AccountTaxIds { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class SubscriptionScheduleDefaultSettingsInvoiceSettingsOptions : INested
         /// <c>collection_method=charge_automatically</c>.
         /// </summary>
         [JsonProperty("days_until_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("days_until_due")]
+#endif
         public long? DaysUntilDue { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class SubscriptionScheduleDefaultSettingsInvoiceSettingsOptions : INested
         /// branding and support information of the specified account.
         /// </summary>
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public SubscriptionScheduleDefaultSettingsInvoiceSettingsIssuerOptions Issuer { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsOptions.cs
index acc6a2b9e6..5f2fb642dc 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionScheduleDefaultSettingsOptions : INestedOptions
     {
@@ -14,12 +17,18 @@ public class SubscriptionScheduleDefaultSettingsOptions : INestedOptions
         /// href="https://stripe.com/docs/connect/subscriptions#collecting-fees-on-subscriptions">documentation</a>.
         /// </summary>
         [JsonProperty("application_fee_percent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_percent")]
+#endif
         public decimal? ApplicationFeePercent { get; set; }
 
         /// <summary>
         /// Default settings for automatic tax computation.
         /// </summary>
         [JsonProperty("automatic_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatic_tax")]
+#endif
         public SubscriptionScheduleDefaultSettingsAutomaticTaxOptions AutomaticTax { get; set; }
 
         /// <summary>
@@ -31,6 +40,9 @@ public class SubscriptionScheduleDefaultSettingsOptions : INestedOptions
         /// One of: <c>automatic</c>, or <c>phase_start</c>.
         /// </summary>
         [JsonProperty("billing_cycle_anchor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_cycle_anchor")]
+#endif
         public string BillingCycleAnchor { get; set; }
 
         /// <summary>
@@ -38,6 +50,9 @@ public class SubscriptionScheduleDefaultSettingsOptions : INestedOptions
         /// new billing period. Pass an empty string to remove previously-defined thresholds.
         /// </summary>
         [JsonProperty("billing_thresholds")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_thresholds")]
+#endif
         public SubscriptionScheduleDefaultSettingsBillingThresholdsOptions BillingThresholds { get; set; }
 
         /// <summary>
@@ -49,6 +64,9 @@ public class SubscriptionScheduleDefaultSettingsOptions : INestedOptions
         /// One of: <c>charge_automatically</c>, or <c>send_invoice</c>.
         /// </summary>
         [JsonProperty("collection_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("collection_method")]
+#endif
         public string CollectionMethod { get; set; }
 
         /// <summary>
@@ -57,6 +75,9 @@ public class SubscriptionScheduleDefaultSettingsOptions : INestedOptions
         /// default payment method in the customer's invoice settings.
         /// </summary>
         [JsonProperty("default_payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_payment_method")]
+#endif
         public string DefaultPaymentMethod { get; set; }
 
         /// <summary>
@@ -65,12 +86,18 @@ public class SubscriptionScheduleDefaultSettingsOptions : INestedOptions
         /// certain local payment methods UIs.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// All invoices will be billed using the specified settings.
         /// </summary>
         [JsonProperty("invoice_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_settings")]
+#endif
         public SubscriptionScheduleDefaultSettingsInvoiceSettingsOptions InvoiceSettings { get; set; }
 
         /// <summary>
@@ -78,6 +105,9 @@ public class SubscriptionScheduleDefaultSettingsOptions : INestedOptions
         /// invoices.
         /// </summary>
         [JsonProperty("on_behalf_of")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+#endif
         public string OnBehalfOf { get; set; }
 
         /// <summary>
@@ -85,6 +115,9 @@ public class SubscriptionScheduleDefaultSettingsOptions : INestedOptions
         /// subscription's invoices.
         /// </summary>
         [JsonProperty("transfer_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_data")]
+#endif
         public SubscriptionScheduleDefaultSettingsTransferDataOptions TransferData { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsTransferDataOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsTransferDataOptions.cs
index 37cbfbda80..064a19a5af 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsTransferDataOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleDefaultSettingsTransferDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionScheduleDefaultSettingsTransferDataOptions : INestedOptions
     {
@@ -12,12 +15,18 @@ public class SubscriptionScheduleDefaultSettingsTransferDataOptions : INestedOpt
         /// destination.
         /// </summary>
         [JsonProperty("amount_percent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_percent")]
+#endif
         public decimal? AmountPercent { get; set; }
 
         /// <summary>
         /// ID of an existing, connected Stripe account.
         /// </summary>
         [JsonProperty("destination")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination")]
+#endif
         public string Destination { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleInvoiceSettingsOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleInvoiceSettingsOptions.cs
index 87eba64c0e..269422cbf5 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleInvoiceSettingsOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleInvoiceSettingsOptions.cs
@@ -1,10 +1,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionScheduleInvoiceSettingsOptions : INestedOptions
     {
         [JsonProperty("days_until_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("days_until_due")]
+#endif
         public long? DaysUntilDue { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleListOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleListOptions.cs
index d590f30c7f..4c0d8a825e 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleListOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleListOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionScheduleListOptions : ListOptionsWithCreated
     {
@@ -12,6 +15,10 @@ public class SubscriptionScheduleListOptions : ListOptionsWithCreated
         /// </summary>
         [JsonProperty("canceled_at")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("canceled_at")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, DateRangeOptions> CanceledAt { get; set; }
 
         /// <summary>
@@ -19,12 +26,19 @@ public class SubscriptionScheduleListOptions : ListOptionsWithCreated
         /// </summary>
         [JsonProperty("completed_at")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("completed_at")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, DateRangeOptions> CompletedAt { get; set; }
 
         /// <summary>
         /// Only return subscription schedules for the given customer.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
@@ -32,12 +46,19 @@ public class SubscriptionScheduleListOptions : ListOptionsWithCreated
         /// </summary>
         [JsonProperty("released_at")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("released_at")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, DateRangeOptions> ReleasedAt { get; set; }
 
         /// <summary>
         /// Only return subscription schedules that have not started yet.
         /// </summary>
         [JsonProperty("scheduled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("scheduled")]
+#endif
         public bool? Scheduled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseAddInvoiceItemDiscountOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseAddInvoiceItemDiscountOptions.cs
index e60c11d0f0..dad8d19b9e 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseAddInvoiceItemDiscountOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseAddInvoiceItemDiscountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionSchedulePhaseAddInvoiceItemDiscountOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class SubscriptionSchedulePhaseAddInvoiceItemDiscountOptions : INestedOpt
         /// ID of the coupon to create a new discount for.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
         /// ID of an existing discount on the object (or one of its ancestors) to reuse.
         /// </summary>
         [JsonProperty("discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+#endif
         public string Discount { get; set; }
 
         /// <summary>
         /// ID of the promotion code to create a new discount for.
         /// </summary>
         [JsonProperty("promotion_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotion_code")]
+#endif
         public string PromotionCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseAddInvoiceItemOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseAddInvoiceItemOptions.cs
index 16a59244c0..b782d922e2 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseAddInvoiceItemOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseAddInvoiceItemOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionSchedulePhaseAddInvoiceItemOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class SubscriptionSchedulePhaseAddInvoiceItemOptions : INestedOptions
         /// The coupons to redeem into discounts for the item.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<SubscriptionSchedulePhaseAddInvoiceItemDiscountOptions> Discounts { get; set; }
 
         /// <summary>
         /// The ID of the price object. One of <c>price</c> or <c>price_data</c> is required.
         /// </summary>
         [JsonProperty("price")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price")]
+#endif
         public string Price { get; set; }
 
         /// <summary>
@@ -23,12 +32,18 @@ public class SubscriptionSchedulePhaseAddInvoiceItemOptions : INestedOptions
         /// object inline. One of <c>price</c> or <c>price_data</c> is required.
         /// </summary>
         [JsonProperty("price_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price_data")]
+#endif
         public SubscriptionSchedulePhaseAddInvoiceItemPriceDataOptions PriceData { get; set; }
 
         /// <summary>
         /// Quantity for this item. Defaults to 1.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         /// <summary>
@@ -36,6 +51,9 @@ public class SubscriptionSchedulePhaseAddInvoiceItemOptions : INestedOptions
         /// apply to this item.
         /// </summary>
         [JsonProperty("tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rates")]
+#endif
         public List<string> TaxRates { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseAddInvoiceItemPriceDataOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseAddInvoiceItemPriceDataOptions.cs
index aeaddb7b95..aefa6074a6 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseAddInvoiceItemPriceDataOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseAddInvoiceItemPriceDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionSchedulePhaseAddInvoiceItemPriceDataOptions : INestedOptions
     {
@@ -11,12 +14,18 @@ public class SubscriptionSchedulePhaseAddInvoiceItemPriceDataOptions : INestedOp
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// The ID of the product that this price will belong to.
         /// </summary>
         [JsonProperty("product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product")]
+#endif
         public string Product { get; set; }
 
         /// <summary>
@@ -29,6 +38,9 @@ public class SubscriptionSchedulePhaseAddInvoiceItemPriceDataOptions : INestedOp
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
@@ -37,6 +49,9 @@ public class SubscriptionSchedulePhaseAddInvoiceItemPriceDataOptions : INestedOp
         /// customer.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
@@ -45,6 +60,9 @@ public class SubscriptionSchedulePhaseAddInvoiceItemPriceDataOptions : INestedOp
         /// <c>unit_amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseAutomaticTaxLiabilityOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseAutomaticTaxLiabilityOptions.cs
index 47725249bd..357b2e6c27 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseAutomaticTaxLiabilityOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseAutomaticTaxLiabilityOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionSchedulePhaseAutomaticTaxLiabilityOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SubscriptionSchedulePhaseAutomaticTaxLiabilityOptions : INestedOpti
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public string Account { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class SubscriptionSchedulePhaseAutomaticTaxLiabilityOptions : INestedOpti
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseAutomaticTaxOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseAutomaticTaxOptions.cs
index a80a205ce4..6e0fc1ee32 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseAutomaticTaxOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseAutomaticTaxOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionSchedulePhaseAutomaticTaxOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SubscriptionSchedulePhaseAutomaticTaxOptions : INestedOptions
         /// invoices generated by the subscription.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class SubscriptionSchedulePhaseAutomaticTaxOptions : INestedOptions
         /// transaction is returned in the report of the connected account.
         /// </summary>
         [JsonProperty("liability")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("liability")]
+#endif
         public SubscriptionSchedulePhaseAutomaticTaxLiabilityOptions Liability { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseBillingThresholdsOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseBillingThresholdsOptions.cs
index e40fe46edc..fd6a11cb11 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseBillingThresholdsOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseBillingThresholdsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionSchedulePhaseBillingThresholdsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SubscriptionSchedulePhaseBillingThresholdsOptions : INestedOptions
         /// Monetary threshold that triggers the subscription to advance to a new billing period.
         /// </summary>
         [JsonProperty("amount_gte")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_gte")]
+#endif
         public long? AmountGte { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class SubscriptionSchedulePhaseBillingThresholdsOptions : INestedOptions
         /// threshold was last reached; otherwise, the value will remain unchanged.
         /// </summary>
         [JsonProperty("reset_billing_cycle_anchor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reset_billing_cycle_anchor")]
+#endif
         public bool? ResetBillingCycleAnchor { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseDiscountOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseDiscountOptions.cs
index 18d7655af4..e3d74d45fa 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseDiscountOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseDiscountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionSchedulePhaseDiscountOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class SubscriptionSchedulePhaseDiscountOptions : INestedOptions
         /// ID of the coupon to create a new discount for.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
         /// ID of an existing discount on the object (or one of its ancestors) to reuse.
         /// </summary>
         [JsonProperty("discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+#endif
         public string Discount { get; set; }
 
         /// <summary>
         /// ID of the promotion code to create a new discount for.
         /// </summary>
         [JsonProperty("promotion_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotion_code")]
+#endif
         public string PromotionCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseInvoiceSettingsIssuerOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseInvoiceSettingsIssuerOptions.cs
index 88bc65aae0..b99e3da4dd 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseInvoiceSettingsIssuerOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseInvoiceSettingsIssuerOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionSchedulePhaseInvoiceSettingsIssuerOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SubscriptionSchedulePhaseInvoiceSettingsIssuerOptions : INestedOpti
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public string Account { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class SubscriptionSchedulePhaseInvoiceSettingsIssuerOptions : INestedOpti
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseInvoiceSettingsOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseInvoiceSettingsOptions.cs
index 92f7ae3603..a11ddd07f8 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseInvoiceSettingsOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseInvoiceSettingsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionSchedulePhaseInvoiceSettingsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class SubscriptionSchedulePhaseInvoiceSettingsOptions : INestedOptions
         /// on invoices generated by this phase of the subscription schedule.
         /// </summary>
         [JsonProperty("account_tax_ids")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_tax_ids")]
+#endif
         public List<string> AccountTaxIds { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class SubscriptionSchedulePhaseInvoiceSettingsOptions : INestedOptions
         /// <c>billing=charge_automatically</c>.
         /// </summary>
         [JsonProperty("days_until_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("days_until_due")]
+#endif
         public long? DaysUntilDue { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class SubscriptionSchedulePhaseInvoiceSettingsOptions : INestedOptions
         /// branding and support information of the specified account.
         /// </summary>
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public SubscriptionSchedulePhaseInvoiceSettingsIssuerOptions Issuer { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseItemBillingThresholdsOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseItemBillingThresholdsOptions.cs
index 0378f9e04a..1fb045bd3e 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseItemBillingThresholdsOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseItemBillingThresholdsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionSchedulePhaseItemBillingThresholdsOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class SubscriptionSchedulePhaseItemBillingThresholdsOptions : INestedOpti
         /// threshold</a>).
         /// </summary>
         [JsonProperty("usage_gte")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("usage_gte")]
+#endif
         public long? UsageGte { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseItemDiscountOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseItemDiscountOptions.cs
index 3e2f9baceb..84a77193e9 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseItemDiscountOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseItemDiscountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionSchedulePhaseItemDiscountOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class SubscriptionSchedulePhaseItemDiscountOptions : INestedOptions
         /// ID of the coupon to create a new discount for.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
         /// ID of an existing discount on the object (or one of its ancestors) to reuse.
         /// </summary>
         [JsonProperty("discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+#endif
         public string Discount { get; set; }
 
         /// <summary>
         /// ID of the promotion code to create a new discount for.
         /// </summary>
         [JsonProperty("promotion_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotion_code")]
+#endif
         public string PromotionCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseItemOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseItemOptions.cs
index 0a7bb003fe..849c4323a7 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseItemOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseItemOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionSchedulePhaseItemOptions : INestedOptions, IHasMetadata
     {
@@ -12,12 +15,18 @@ public class SubscriptionSchedulePhaseItemOptions : INestedOptions, IHasMetadata
         /// thresholds.
         /// </summary>
         [JsonProperty("billing_thresholds")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_thresholds")]
+#endif
         public SubscriptionSchedulePhaseItemBillingThresholdsOptions BillingThresholds { get; set; }
 
         /// <summary>
         /// The coupons to redeem into discounts for the subscription item.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<SubscriptionSchedulePhaseItemDiscountOptions> Discounts { get; set; }
 
         /// <summary>
@@ -31,6 +40,9 @@ public class SubscriptionSchedulePhaseItemOptions : INestedOptions, IHasMetadata
         /// configuration item's <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -38,12 +50,18 @@ public class SubscriptionSchedulePhaseItemOptions : INestedOptions, IHasMetadata
         /// <c>price</c>.
         /// </summary>
         [JsonProperty("plan")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("plan")]
+#endif
         public string Plan { get; set; }
 
         /// <summary>
         /// The ID of the price object.
         /// </summary>
         [JsonProperty("price")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price")]
+#endif
         public string Price { get; set; }
 
         /// <summary>
@@ -51,6 +69,9 @@ public class SubscriptionSchedulePhaseItemOptions : INestedOptions, IHasMetadata
         /// object inline.
         /// </summary>
         [JsonProperty("price_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price_data")]
+#endif
         public SubscriptionSchedulePhaseItemPriceDataOptions PriceData { get; set; }
 
         /// <summary>
@@ -58,6 +79,9 @@ public class SubscriptionSchedulePhaseItemOptions : INestedOptions, IHasMetadata
         /// <c>licensed</c> and not <c>metered</c>.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         /// <summary>
@@ -68,6 +92,9 @@ public class SubscriptionSchedulePhaseItemOptions : INestedOptions, IHasMetadata
         /// tax rates.
         /// </summary>
         [JsonProperty("tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rates")]
+#endif
         public List<string> TaxRates { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseItemPriceDataOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseItemPriceDataOptions.cs
index b7096eeadc..198e2ebc77 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseItemPriceDataOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseItemPriceDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionSchedulePhaseItemPriceDataOptions : INestedOptions
     {
@@ -11,18 +14,27 @@ public class SubscriptionSchedulePhaseItemPriceDataOptions : INestedOptions
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// The ID of the product that this price will belong to.
         /// </summary>
         [JsonProperty("product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product")]
+#endif
         public string Product { get; set; }
 
         /// <summary>
         /// The recurring components of a price such as <c>interval</c> and <c>interval_count</c>.
         /// </summary>
         [JsonProperty("recurring")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("recurring")]
+#endif
         public SubscriptionSchedulePhaseItemPriceDataRecurringOptions Recurring { get; set; }
 
         /// <summary>
@@ -35,6 +47,9 @@ public class SubscriptionSchedulePhaseItemPriceDataOptions : INestedOptions
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
@@ -42,6 +57,9 @@ public class SubscriptionSchedulePhaseItemPriceDataOptions : INestedOptions
         /// how much to charge.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
@@ -50,6 +68,9 @@ public class SubscriptionSchedulePhaseItemPriceDataOptions : INestedOptions
         /// <c>unit_amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseItemPriceDataRecurringOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseItemPriceDataRecurringOptions.cs
index 4ccd27db86..1f6cc551b4 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseItemPriceDataRecurringOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseItemPriceDataRecurringOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionSchedulePhaseItemPriceDataRecurringOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class SubscriptionSchedulePhaseItemPriceDataRecurringOptions : INestedOpt
         /// One of: <c>day</c>, <c>month</c>, <c>week</c>, or <c>year</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class SubscriptionSchedulePhaseItemPriceDataRecurringOptions : INestedOpt
         /// years interval allowed (3 years, 36 months, or 156 weeks).
         /// </summary>
         [JsonProperty("interval_count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_count")]
+#endif
         public long? IntervalCount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseOptions.cs
index a4901e216a..c8904c3e13 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionSchedulePhaseOptions : INestedOptions, IHasMetadata
     {
@@ -13,6 +16,9 @@ public class SubscriptionSchedulePhaseOptions : INestedOptions, IHasMetadata
         /// invoice for this phase. You may pass up to 20 items.
         /// </summary>
         [JsonProperty("add_invoice_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("add_invoice_items")]
+#endif
         public List<SubscriptionSchedulePhaseAddInvoiceItemOptions> AddInvoiceItems { get; set; }
 
         /// <summary>
@@ -24,12 +30,18 @@ public class SubscriptionSchedulePhaseOptions : INestedOptions, IHasMetadata
         /// href="https://stripe.com/docs/connect/subscriptions#collecting-fees-on-subscriptions">documentation</a>.
         /// </summary>
         [JsonProperty("application_fee_percent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_percent")]
+#endif
         public decimal? ApplicationFeePercent { get; set; }
 
         /// <summary>
         /// Automatic tax settings for this phase.
         /// </summary>
         [JsonProperty("automatic_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatic_tax")]
+#endif
         public SubscriptionSchedulePhaseAutomaticTaxOptions AutomaticTax { get; set; }
 
         /// <summary>
@@ -41,6 +53,9 @@ public class SubscriptionSchedulePhaseOptions : INestedOptions, IHasMetadata
         /// One of: <c>automatic</c>, or <c>phase_start</c>.
         /// </summary>
         [JsonProperty("billing_cycle_anchor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_cycle_anchor")]
+#endif
         public string BillingCycleAnchor { get; set; }
 
         /// <summary>
@@ -48,6 +63,9 @@ public class SubscriptionSchedulePhaseOptions : INestedOptions, IHasMetadata
         /// new billing period. Pass an empty string to remove previously-defined thresholds.
         /// </summary>
         [JsonProperty("billing_thresholds")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_thresholds")]
+#endif
         public SubscriptionSchedulePhaseBillingThresholdsOptions BillingThresholds { get; set; }
 
         /// <summary>
@@ -59,6 +77,9 @@ public class SubscriptionSchedulePhaseOptions : INestedOptions, IHasMetadata
         /// One of: <c>charge_automatically</c>, or <c>send_invoice</c>.
         /// </summary>
         [JsonProperty("collection_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("collection_method")]
+#endif
         public string CollectionMethod { get; set; }
 
         /// <summary>
@@ -67,6 +88,9 @@ public class SubscriptionSchedulePhaseOptions : INestedOptions, IHasMetadata
         /// instead.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
@@ -75,6 +99,9 @@ public class SubscriptionSchedulePhaseOptions : INestedOptions, IHasMetadata
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -83,6 +110,9 @@ public class SubscriptionSchedulePhaseOptions : INestedOptions, IHasMetadata
         /// default payment method in the customer's invoice settings.
         /// </summary>
         [JsonProperty("default_payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_payment_method")]
+#endif
         public string DefaultPaymentMethod { get; set; }
 
         /// <summary>
@@ -94,6 +124,9 @@ public class SubscriptionSchedulePhaseOptions : INestedOptions, IHasMetadata
         /// for any Invoices issued by the Subscription during this Phase.
         /// </summary>
         [JsonProperty("default_tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_tax_rates")]
+#endif
         public List<string> DefaultTaxRates { get; set; }
 
         /// <summary>
@@ -102,6 +135,9 @@ public class SubscriptionSchedulePhaseOptions : INestedOptions, IHasMetadata
         /// certain local payment methods UIs.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -110,6 +146,9 @@ public class SubscriptionSchedulePhaseOptions : INestedOptions, IHasMetadata
         /// any discounts.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<SubscriptionSchedulePhaseDiscountOptions> Discounts { get; set; }
 
         /// <summary>
@@ -118,12 +157,19 @@ public class SubscriptionSchedulePhaseOptions : INestedOptions, IHasMetadata
         /// </summary>
         [JsonProperty("end_date")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end_date")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, SubscriptionSchedulePhaseEndDate> EndDate { get; set; }
 
         /// <summary>
         /// All invoices will be billed using the specified settings.
         /// </summary>
         [JsonProperty("invoice_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_settings")]
+#endif
         public SubscriptionSchedulePhaseInvoiceSettingsOptions InvoiceSettings { get; set; }
 
         /// <summary>
@@ -131,6 +177,9 @@ public class SubscriptionSchedulePhaseOptions : INestedOptions, IHasMetadata
         /// the subscription schedule.
         /// </summary>
         [JsonProperty("items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("items")]
+#endif
         public List<SubscriptionSchedulePhaseItemOptions> Items { get; set; }
 
         /// <summary>
@@ -140,6 +189,9 @@ public class SubscriptionSchedulePhaseOptions : INestedOptions, IHasMetadata
         /// If set, <c>end_date</c> must not be set.
         /// </summary>
         [JsonProperty("iterations")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iterations")]
+#endif
         public long? Iterations { get; set; }
 
         /// <summary>
@@ -153,6 +205,9 @@ public class SubscriptionSchedulePhaseOptions : INestedOptions, IHasMetadata
         /// <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -160,6 +215,9 @@ public class SubscriptionSchedulePhaseOptions : INestedOptions, IHasMetadata
         /// invoices.
         /// </summary>
         [JsonProperty("on_behalf_of")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+#endif
         public string OnBehalfOf { get; set; }
 
         /// <summary>
@@ -174,6 +232,9 @@ public class SubscriptionSchedulePhaseOptions : INestedOptions, IHasMetadata
         /// One of: <c>always_invoice</c>, <c>create_prorations</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("proration_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("proration_behavior")]
+#endif
         public string ProrationBehavior { get; set; }
 
         /// <summary>
@@ -182,6 +243,10 @@ public class SubscriptionSchedulePhaseOptions : INestedOptions, IHasMetadata
         /// </summary>
         [JsonProperty("start_date")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("start_date")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, SubscriptionSchedulePhaseStartDate> StartDate { get; set; }
 
         /// <summary>
@@ -189,6 +254,9 @@ public class SubscriptionSchedulePhaseOptions : INestedOptions, IHasMetadata
         /// subscription's invoices.
         /// </summary>
         [JsonProperty("transfer_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_data")]
+#endif
         public SubscriptionSchedulePhaseTransferDataOptions TransferData { get; set; }
 
         /// <summary>
@@ -196,6 +264,9 @@ public class SubscriptionSchedulePhaseOptions : INestedOptions, IHasMetadata
         /// charged for any fees.
         /// </summary>
         [JsonProperty("trial")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial")]
+#endif
         public bool? Trial { get; set; }
 
         /// <summary>
@@ -204,6 +275,10 @@ public class SubscriptionSchedulePhaseOptions : INestedOptions, IHasMetadata
         /// </summary>
         [JsonProperty("trial_end")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_end")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, SubscriptionSchedulePhaseTrialEnd> TrialEnd { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhasePlanBillingThresholdsOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhasePlanBillingThresholdsOptions.cs
index df75c54c89..ef436e07be 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhasePlanBillingThresholdsOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhasePlanBillingThresholdsOptions.cs
@@ -1,10 +1,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionSchedulePhasePlanBillingThresholdsOptions : INestedOptions
     {
         [JsonProperty("usage_gte")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("usage_gte")]
+#endif
         public long? UsageGte { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhasePlanPriceDataOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhasePlanPriceDataOptions.cs
index d4460ba342..c1b2634958 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhasePlanPriceDataOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhasePlanPriceDataOptions.cs
@@ -1,22 +1,40 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionSchedulePhasePlanPriceDataOptions : INestedOptions
     {
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         [JsonProperty("product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product")]
+#endif
         public string Product { get; set; }
 
         [JsonProperty("recurring")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("recurring")]
+#endif
         public SubscriptionSchedulePhasePlanPriceDataRecurringOptions Recurring { get; set; }
 
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhasePlanPriceDataRecurringOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhasePlanPriceDataRecurringOptions.cs
index 9d0a4776ad..bf32bca885 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhasePlanPriceDataRecurringOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhasePlanPriceDataRecurringOptions.cs
@@ -1,6 +1,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionSchedulePhasePlanPriceDataRecurringOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SubscriptionSchedulePhasePlanPriceDataRecurringOptions : INestedOpt
         /// One of: <c>day</c>, <c>month</c>, <c>week</c>, or <c>year</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class SubscriptionSchedulePhasePlanPriceDataRecurringOptions : INestedOpt
         /// year interval allowed (1 year, 12 months, or 52 weeks).
         /// </summary>
         [JsonProperty("interval_count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_count")]
+#endif
         public long? IntervalCount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseTransferDataOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseTransferDataOptions.cs
index a2099cad2c..3ebc699d74 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseTransferDataOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionSchedulePhaseTransferDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionSchedulePhaseTransferDataOptions : INestedOptions
     {
@@ -12,12 +15,18 @@ public class SubscriptionSchedulePhaseTransferDataOptions : INestedOptions
         /// destination.
         /// </summary>
         [JsonProperty("amount_percent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_percent")]
+#endif
         public decimal? AmountPercent { get; set; }
 
         /// <summary>
         /// ID of an existing, connected Stripe account.
         /// </summary>
         [JsonProperty("destination")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination")]
+#endif
         public string Destination { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleReleaseOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleReleaseOptions.cs
index 374ff1be91..d2c2041576 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleReleaseOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleReleaseOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionScheduleReleaseOptions : BaseOptions
     {
@@ -9,6 +12,9 @@ public class SubscriptionScheduleReleaseOptions : BaseOptions
         /// Keep any cancellation on the subscription that the schedule has set.
         /// </summary>
         [JsonProperty("preserve_cancel_date")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preserve_cancel_date")]
+#endif
         public bool? PreserveCancelDate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleService.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleService.cs
index 1acdbe04d3..6b78b2ceb8 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleService.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class SubscriptionScheduleService : Service<SubscriptionSchedule>,
+    public class SubscriptionScheduleService : Service,
         ICreatable<SubscriptionSchedule, SubscriptionScheduleCreateOptions>,
         IListable<SubscriptionSchedule, SubscriptionScheduleListOptions>,
         IRetrievable<SubscriptionSchedule, SubscriptionScheduleGetOptions>,
diff --git a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleUpdateOptions.cs b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleUpdateOptions.cs
index 5d9417e1cc..d1c6127e42 100644
--- a/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleUpdateOptions.cs
+++ b/src/Stripe.net/Services/SubscriptionSchedules/SubscriptionScheduleUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionScheduleUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -10,6 +13,9 @@ public class SubscriptionScheduleUpdateOptions : BaseOptions, IHasMetadata
         /// Object representing the subscription schedule's default settings.
         /// </summary>
         [JsonProperty("default_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_settings")]
+#endif
         public SubscriptionScheduleDefaultSettingsOptions DefaultSettings { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class SubscriptionScheduleUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>cancel</c>, <c>none</c>, <c>release</c>, or <c>renew</c>.
         /// </summary>
         [JsonProperty("end_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end_behavior")]
+#endif
         public string EndBehavior { get; set; }
 
         /// <summary>
@@ -30,6 +39,9 @@ public class SubscriptionScheduleUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -39,6 +51,9 @@ public class SubscriptionScheduleUpdateOptions : BaseOptions, IHasMetadata
         /// Note that past phases can be omitted.
         /// </summary>
         [JsonProperty("phases")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phases")]
+#endif
         public List<SubscriptionSchedulePhaseOptions> Phases { get; set; }
 
         /// <summary>
@@ -47,6 +62,9 @@ public class SubscriptionScheduleUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>always_invoice</c>, <c>create_prorations</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("proration_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("proration_behavior")]
+#endif
         public string ProrationBehavior { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionAddInvoiceItemDiscountOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionAddInvoiceItemDiscountOptions.cs
index af79d20c5e..78569c16e6 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionAddInvoiceItemDiscountOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionAddInvoiceItemDiscountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionAddInvoiceItemDiscountOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class SubscriptionAddInvoiceItemDiscountOptions : INestedOptions
         /// ID of the coupon to create a new discount for.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
         /// ID of an existing discount on the object (or one of its ancestors) to reuse.
         /// </summary>
         [JsonProperty("discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+#endif
         public string Discount { get; set; }
 
         /// <summary>
         /// ID of the promotion code to create a new discount for.
         /// </summary>
         [JsonProperty("promotion_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotion_code")]
+#endif
         public string PromotionCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionAddInvoiceItemOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionAddInvoiceItemOptions.cs
index 16c8b0c5f3..ce52a2e42a 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionAddInvoiceItemOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionAddInvoiceItemOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionAddInvoiceItemOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class SubscriptionAddInvoiceItemOptions : INestedOptions
         /// The coupons to redeem into discounts for the item.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<SubscriptionAddInvoiceItemDiscountOptions> Discounts { get; set; }
 
         /// <summary>
         /// The ID of the price object. One of <c>price</c> or <c>price_data</c> is required.
         /// </summary>
         [JsonProperty("price")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price")]
+#endif
         public string Price { get; set; }
 
         /// <summary>
@@ -23,12 +32,18 @@ public class SubscriptionAddInvoiceItemOptions : INestedOptions
         /// object inline. One of <c>price</c> or <c>price_data</c> is required.
         /// </summary>
         [JsonProperty("price_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price_data")]
+#endif
         public SubscriptionAddInvoiceItemPriceDataOptions PriceData { get; set; }
 
         /// <summary>
         /// Quantity for this item. Defaults to 1.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         /// <summary>
@@ -36,6 +51,9 @@ public class SubscriptionAddInvoiceItemOptions : INestedOptions
         /// apply to this item.
         /// </summary>
         [JsonProperty("tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rates")]
+#endif
         public List<string> TaxRates { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionAddInvoiceItemPriceDataOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionAddInvoiceItemPriceDataOptions.cs
index 969729e78a..c2be271156 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionAddInvoiceItemPriceDataOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionAddInvoiceItemPriceDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionAddInvoiceItemPriceDataOptions : INestedOptions
     {
@@ -11,12 +14,18 @@ public class SubscriptionAddInvoiceItemPriceDataOptions : INestedOptions
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// The ID of the product that this price will belong to.
         /// </summary>
         [JsonProperty("product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product")]
+#endif
         public string Product { get; set; }
 
         /// <summary>
@@ -29,6 +38,9 @@ public class SubscriptionAddInvoiceItemPriceDataOptions : INestedOptions
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
@@ -37,6 +49,9 @@ public class SubscriptionAddInvoiceItemPriceDataOptions : INestedOptions
         /// customer.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
@@ -45,6 +60,9 @@ public class SubscriptionAddInvoiceItemPriceDataOptions : INestedOptions
         /// <c>unit_amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionAutomaticTaxLiabilityOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionAutomaticTaxLiabilityOptions.cs
index 5e869474b7..1f80e3c448 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionAutomaticTaxLiabilityOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionAutomaticTaxLiabilityOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionAutomaticTaxLiabilityOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SubscriptionAutomaticTaxLiabilityOptions : INestedOptions
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public string Account { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class SubscriptionAutomaticTaxLiabilityOptions : INestedOptions
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionAutomaticTaxOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionAutomaticTaxOptions.cs
index 0755c19df8..60267be2b8 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionAutomaticTaxOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionAutomaticTaxOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionAutomaticTaxOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SubscriptionAutomaticTaxOptions : INestedOptions
         /// invoices generated by the subscription.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class SubscriptionAutomaticTaxOptions : INestedOptions
         /// transaction is returned in the report of the connected account.
         /// </summary>
         [JsonProperty("liability")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("liability")]
+#endif
         public SubscriptionAutomaticTaxLiabilityOptions Liability { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionBillingCycleAnchorConfigOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionBillingCycleAnchorConfigOptions.cs
index 1f73c7d484..bb08fe9f30 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionBillingCycleAnchorConfigOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionBillingCycleAnchorConfigOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionBillingCycleAnchorConfigOptions : INestedOptions
     {
@@ -9,30 +12,45 @@ public class SubscriptionBillingCycleAnchorConfigOptions : INestedOptions
         /// The day of the month the billing_cycle_anchor should be. Ranges from 1 to 31.
         /// </summary>
         [JsonProperty("day_of_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("day_of_month")]
+#endif
         public long? DayOfMonth { get; set; }
 
         /// <summary>
         /// The hour of the day the billing_cycle_anchor should be. Ranges from 0 to 23.
         /// </summary>
         [JsonProperty("hour")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hour")]
+#endif
         public long? Hour { get; set; }
 
         /// <summary>
         /// The minute of the hour the billing_cycle_anchor should be. Ranges from 0 to 59.
         /// </summary>
         [JsonProperty("minute")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("minute")]
+#endif
         public long? Minute { get; set; }
 
         /// <summary>
         /// The month to start full cycle billing periods. Ranges from 1 to 12.
         /// </summary>
         [JsonProperty("month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("month")]
+#endif
         public long? Month { get; set; }
 
         /// <summary>
         /// The second of the minute the billing_cycle_anchor should be. Ranges from 0 to 59.
         /// </summary>
         [JsonProperty("second")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("second")]
+#endif
         public long? Second { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionBillingThresholdsOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionBillingThresholdsOptions.cs
index 1011d28fbe..0f95b945df 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionBillingThresholdsOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionBillingThresholdsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionBillingThresholdsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SubscriptionBillingThresholdsOptions : INestedOptions
         /// Monetary threshold that triggers the subscription to advance to a new billing period.
         /// </summary>
         [JsonProperty("amount_gte")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_gte")]
+#endif
         public long? AmountGte { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class SubscriptionBillingThresholdsOptions : INestedOptions
         /// threshold was last reached; otherwise, the value will remain unchanged.
         /// </summary>
         [JsonProperty("reset_billing_cycle_anchor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reset_billing_cycle_anchor")]
+#endif
         public bool? ResetBillingCycleAnchor { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionCancelOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionCancelOptions.cs
index 49c42c7067..82d303c6a8 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionCancelOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionCancelOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionCancelOptions : BaseOptions
     {
@@ -9,6 +12,9 @@ public class SubscriptionCancelOptions : BaseOptions
         /// Details about why this subscription was cancelled.
         /// </summary>
         [JsonProperty("cancellation_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancellation_details")]
+#endif
         public SubscriptionCancellationDetailsOptions CancellationDetails { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class SubscriptionCancelOptions : BaseOptions
         /// new/pending proration invoice items. Defaults to <c>false</c>.
         /// </summary>
         [JsonProperty("invoice_now")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_now")]
+#endif
         public bool? InvoiceNow { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class SubscriptionCancelOptions : BaseOptions
         /// subscription period end. Defaults to <c>false</c>.
         /// </summary>
         [JsonProperty("prorate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("prorate")]
+#endif
         public bool? Prorate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionCancellationDetailsOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionCancellationDetailsOptions.cs
index fdd237fb28..f9a51f1a12 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionCancellationDetailsOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionCancellationDetailsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionCancellationDetailsOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SubscriptionCancellationDetailsOptions : INestedOptions
         /// was canceled explicitly by the user.
         /// </summary>
         [JsonProperty("comment")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("comment")]
+#endif
         public string Comment { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class SubscriptionCancellationDetailsOptions : INestedOptions
         /// <c>unused</c>.
         /// </summary>
         [JsonProperty("feedback")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("feedback")]
+#endif
         public string Feedback { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionCreateOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionCreateOptions.cs
index 684772caba..c847237508 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionCreateOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionCreateOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionCreateOptions : BaseOptions, IHasMetadata
     {
@@ -13,6 +16,9 @@ public class SubscriptionCreateOptions : BaseOptions, IHasMetadata
         /// invoice for this subscription. You may pass up to 20 items.
         /// </summary>
         [JsonProperty("add_invoice_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("add_invoice_items")]
+#endif
         public List<SubscriptionAddInvoiceItemOptions> AddInvoiceItems { get; set; }
 
         /// <summary>
@@ -24,6 +30,9 @@ public class SubscriptionCreateOptions : BaseOptions, IHasMetadata
         /// href="https://stripe.com/docs/connect/subscriptions#collecting-fees-on-subscriptions">documentation</a>.
         /// </summary>
         [JsonProperty("application_fee_percent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_percent")]
+#endif
         public decimal? ApplicationFeePercent { get; set; }
 
         /// <summary>
@@ -31,6 +40,9 @@ public class SubscriptionCreateOptions : BaseOptions, IHasMetadata
         /// parameter when the existing value is being changed.
         /// </summary>
         [JsonProperty("automatic_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatic_tax")]
+#endif
         public SubscriptionAutomaticTaxOptions AutomaticTax { get; set; }
 
         /// <summary>
@@ -40,6 +52,10 @@ public class SubscriptionCreateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("backdate_start_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("backdate_start_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? BackdateStartDate { get; set; }
 
         /// <summary>
@@ -51,6 +67,10 @@ public class SubscriptionCreateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("billing_cycle_anchor")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_cycle_anchor")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? BillingCycleAnchor { get; set; }
 
         /// <summary>
@@ -59,6 +79,9 @@ public class SubscriptionCreateOptions : BaseOptions, IHasMetadata
         /// the day_of_month at the hour, minute, and second UTC.
         /// </summary>
         [JsonProperty("billing_cycle_anchor_config")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_cycle_anchor_config")]
+#endif
         public SubscriptionBillingCycleAnchorConfigOptions BillingCycleAnchorConfig { get; set; }
 
         /// <summary>
@@ -66,6 +89,9 @@ public class SubscriptionCreateOptions : BaseOptions, IHasMetadata
         /// new billing period. Pass an empty string to remove previously-defined thresholds.
         /// </summary>
         [JsonProperty("billing_thresholds")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_thresholds")]
+#endif
         public SubscriptionBillingThresholdsOptions BillingThresholds { get; set; }
 
         /// <summary>
@@ -76,6 +102,10 @@ public class SubscriptionCreateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("cancel_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancel_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? CancelAt { get; set; }
 
         /// <summary>
@@ -83,6 +113,9 @@ public class SubscriptionCreateOptions : BaseOptions, IHasMetadata
         /// (<c>current_period_end</c>). Defaults to <c>false</c>.
         /// </summary>
         [JsonProperty("cancel_at_period_end")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancel_at_period_end")]
+#endif
         public bool? CancelAtPeriodEnd { get; set; }
 
         /// <summary>
@@ -94,6 +127,9 @@ public class SubscriptionCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>charge_automatically</c>, or <c>send_invoice</c>.
         /// </summary>
         [JsonProperty("collection_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("collection_method")]
+#endif
         public string CollectionMethod { get; set; }
 
         /// <summary>
@@ -102,6 +138,9 @@ public class SubscriptionCreateOptions : BaseOptions, IHasMetadata
         /// deprecated and will be removed in a future API version. Use <c>discounts</c> instead.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
@@ -110,12 +149,18 @@ public class SubscriptionCreateOptions : BaseOptions, IHasMetadata
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// The identifier of the customer to subscribe.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
@@ -123,6 +168,9 @@ public class SubscriptionCreateOptions : BaseOptions, IHasMetadata
         /// for subscriptions where <c>collection_method</c> is set to <c>send_invoice</c>.
         /// </summary>
         [JsonProperty("days_until_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("days_until_due")]
+#endif
         public long? DaysUntilDue { get; set; }
 
         /// <summary>
@@ -134,6 +182,9 @@ public class SubscriptionCreateOptions : BaseOptions, IHasMetadata
         /// href="https://stripe.com/docs/api/customers/object#customer_object-default_source">default_source</a>.
         /// </summary>
         [JsonProperty("default_payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_payment_method")]
+#endif
         public string DefaultPaymentMethod { get; set; }
 
         /// <summary>
@@ -146,6 +197,9 @@ public class SubscriptionCreateOptions : BaseOptions, IHasMetadata
         /// href="https://stripe.com/docs/api/customers/object#customer_object-default_source">default_source</a>.
         /// </summary>
         [JsonProperty("default_source")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_source")]
+#endif
         public string DefaultSource { get; set; }
 
         /// <summary>
@@ -154,6 +208,9 @@ public class SubscriptionCreateOptions : BaseOptions, IHasMetadata
         /// populated from the subscription.
         /// </summary>
         [JsonProperty("default_tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_tax_rates")]
+#endif
         public List<string> DefaultTaxRates { get; set; }
 
         /// <summary>
@@ -162,6 +219,9 @@ public class SubscriptionCreateOptions : BaseOptions, IHasMetadata
         /// and certain local payment methods UIs.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -169,18 +229,27 @@ public class SubscriptionCreateOptions : BaseOptions, IHasMetadata
         /// inherits the discount from the subscription's customer.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<SubscriptionDiscountOptions> Discounts { get; set; }
 
         /// <summary>
         /// All invoices will be billed using the specified settings.
         /// </summary>
         [JsonProperty("invoice_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_settings")]
+#endif
         public SubscriptionInvoiceSettingsOptions InvoiceSettings { get; set; }
 
         /// <summary>
         /// A list of up to 20 subscription items, each with an attached price.
         /// </summary>
         [JsonProperty("items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("items")]
+#endif
         public List<SubscriptionItemOptions> Items { get; set; }
 
         /// <summary>
@@ -190,6 +259,9 @@ public class SubscriptionCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -197,12 +269,18 @@ public class SubscriptionCreateOptions : BaseOptions, IHasMetadata
         /// Defaults to <c>false</c> (on-session).
         /// </summary>
         [JsonProperty("off_session")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("off_session")]
+#endif
         public bool? OffSession { get; set; }
 
         /// <summary>
         /// The account on behalf of which to charge, for each of the subscription's invoices.
         /// </summary>
         [JsonProperty("on_behalf_of")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+#endif
         public string OnBehalfOf { get; set; }
 
         /// <summary>
@@ -242,12 +320,18 @@ public class SubscriptionCreateOptions : BaseOptions, IHasMetadata
         /// or <c>pending_if_incomplete</c>.
         /// </summary>
         [JsonProperty("payment_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_behavior")]
+#endif
         public string PaymentBehavior { get; set; }
 
         /// <summary>
         /// Payment settings to pass to invoices created by the subscription.
         /// </summary>
         [JsonProperty("payment_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_settings")]
+#endif
         public SubscriptionPaymentSettingsOptions PaymentSettings { get; set; }
 
         /// <summary>
@@ -256,6 +340,9 @@ public class SubscriptionCreateOptions : BaseOptions, IHasMetadata
         /// invoice</a> for the given subscription at the specified interval.
         /// </summary>
         [JsonProperty("pending_invoice_item_interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pending_invoice_item_interval")]
+#endif
         public SubscriptionPendingInvoiceItemIntervalOptions PendingInvoiceItemInterval { get; set; }
 
         /// <summary>
@@ -265,6 +352,9 @@ public class SubscriptionCreateOptions : BaseOptions, IHasMetadata
         /// <c>discounts</c> instead.
         /// </summary>
         [JsonProperty("promotion_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotion_code")]
+#endif
         public string PromotionCode { get; set; }
 
         /// <summary>
@@ -275,6 +365,9 @@ public class SubscriptionCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>always_invoice</c>, <c>create_prorations</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("proration_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("proration_behavior")]
+#endif
         public string ProrationBehavior { get; set; }
 
         /// <summary>
@@ -283,6 +376,9 @@ public class SubscriptionCreateOptions : BaseOptions, IHasMetadata
         /// charges.
         /// </summary>
         [JsonProperty("transfer_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_data")]
+#endif
         public SubscriptionTransferDataOptions TransferData { get; set; }
 
         /// <summary>
@@ -296,6 +392,10 @@ public class SubscriptionCreateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("trial_end")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_end")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, SubscriptionTrialEnd> TrialEnd { get; set; }
 
         /// <summary>
@@ -306,6 +406,9 @@ public class SubscriptionCreateOptions : BaseOptions, IHasMetadata
         /// periods on subscriptions</a> to learn more.
         /// </summary>
         [JsonProperty("trial_from_plan")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_from_plan")]
+#endif
         public bool? TrialFromPlan { get; set; }
 
         /// <summary>
@@ -315,12 +418,18 @@ public class SubscriptionCreateOptions : BaseOptions, IHasMetadata
         /// periods on subscriptions</a> to learn more.
         /// </summary>
         [JsonProperty("trial_period_days")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_period_days")]
+#endif
         public long? TrialPeriodDays { get; set; }
 
         /// <summary>
         /// Settings related to subscription trials.
         /// </summary>
         [JsonProperty("trial_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_settings")]
+#endif
         public SubscriptionTrialSettingsOptions TrialSettings { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionDiscountOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionDiscountOptions.cs
index 00b86dc86b..ea3a73005a 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionDiscountOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionDiscountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionDiscountOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class SubscriptionDiscountOptions : INestedOptions
         /// ID of the coupon to create a new discount for.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
         /// ID of an existing discount on the object (or one of its ancestors) to reuse.
         /// </summary>
         [JsonProperty("discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+#endif
         public string Discount { get; set; }
 
         /// <summary>
         /// ID of the promotion code to create a new discount for.
         /// </summary>
         [JsonProperty("promotion_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotion_code")]
+#endif
         public string PromotionCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionInvoiceSettingsIssuerOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionInvoiceSettingsIssuerOptions.cs
index eca67798fe..ea25a32025 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionInvoiceSettingsIssuerOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionInvoiceSettingsIssuerOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionInvoiceSettingsIssuerOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SubscriptionInvoiceSettingsIssuerOptions : INestedOptions
         /// The connected account being referenced when <c>type</c> is <c>account</c>.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public string Account { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class SubscriptionInvoiceSettingsIssuerOptions : INestedOptions
         /// One of: <c>account</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionInvoiceSettingsOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionInvoiceSettingsOptions.cs
index 335993d153..55fa6d858d 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionInvoiceSettingsOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionInvoiceSettingsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionInvoiceSettingsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class SubscriptionInvoiceSettingsOptions : INestedOptions
         /// by the subscription.
         /// </summary>
         [JsonProperty("account_tax_ids")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_tax_ids")]
+#endif
         public List<string> AccountTaxIds { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class SubscriptionInvoiceSettingsOptions : INestedOptions
         /// branding and support information of the specified account.
         /// </summary>
         [JsonProperty("issuer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("issuer")]
+#endif
         public SubscriptionInvoiceSettingsIssuerOptions Issuer { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionItemBillingThresholdsOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionItemBillingThresholdsOptions.cs
index 192027161f..54ed79ee07 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionItemBillingThresholdsOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionItemBillingThresholdsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionItemBillingThresholdsOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class SubscriptionItemBillingThresholdsOptions : INestedOptions
         /// threshold</a>).
         /// </summary>
         [JsonProperty("usage_gte")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("usage_gte")]
+#endif
         public long? UsageGte { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionItemDiscountOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionItemDiscountOptions.cs
index af81eb0e6c..5172271f95 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionItemDiscountOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionItemDiscountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionItemDiscountOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class SubscriptionItemDiscountOptions : INestedOptions
         /// ID of the coupon to create a new discount for.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
         /// ID of an existing discount on the object (or one of its ancestors) to reuse.
         /// </summary>
         [JsonProperty("discount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discount")]
+#endif
         public string Discount { get; set; }
 
         /// <summary>
         /// ID of the promotion code to create a new discount for.
         /// </summary>
         [JsonProperty("promotion_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotion_code")]
+#endif
         public string PromotionCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionItemOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionItemOptions.cs
index 5a95205f1e..f4a8b18cb4 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionItemOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionItemOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionItemOptions : INestedOptions, IHasId, IHasMetadata
     {
@@ -12,6 +15,9 @@ public class SubscriptionItemOptions : INestedOptions, IHasId, IHasMetadata
         /// thresholds.
         /// </summary>
         [JsonProperty("billing_thresholds")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_thresholds")]
+#endif
         public SubscriptionItemBillingThresholdsOptions BillingThresholds { get; set; }
 
         /// <summary>
@@ -20,24 +26,36 @@ public class SubscriptionItemOptions : INestedOptions, IHasId, IHasMetadata
         /// meter attached.
         /// </summary>
         [JsonProperty("clear_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("clear_usage")]
+#endif
         public bool? ClearUsage { get; set; }
 
         /// <summary>
         /// A flag that, if set to <c>true</c>, will delete the specified item.
         /// </summary>
         [JsonProperty("deleted")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deleted")]
+#endif
         public bool? Deleted { get; set; }
 
         /// <summary>
         /// The coupons to redeem into discounts for the subscription item.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<SubscriptionItemDiscountOptions> Discounts { get; set; }
 
         /// <summary>
         /// Subscription item to update.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public string Id { get; set; }
 
         /// <summary>
@@ -47,12 +65,18 @@ public class SubscriptionItemOptions : INestedOptions, IHasId, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Plan ID for this item, as a string.
         /// </summary>
         [JsonProperty("plan")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("plan")]
+#endif
         public string Plan { get; set; }
 
         /// <summary>
@@ -61,6 +85,9 @@ public class SubscriptionItemOptions : INestedOptions, IHasId, IHasMetadata
         /// <c>quantity</c> parameter is provided.
         /// </summary>
         [JsonProperty("price")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price")]
+#endif
         public string Price { get; set; }
 
         /// <summary>
@@ -68,12 +95,18 @@ public class SubscriptionItemOptions : INestedOptions, IHasId, IHasMetadata
         /// object inline. One of <c>price</c> or <c>price_data</c> is required.
         /// </summary>
         [JsonProperty("price_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price_data")]
+#endif
         public SubscriptionItemPriceDataOptions PriceData { get; set; }
 
         /// <summary>
         /// Quantity for this item.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         /// <summary>
@@ -84,6 +117,9 @@ public class SubscriptionItemOptions : INestedOptions, IHasId, IHasMetadata
         /// tax rates.
         /// </summary>
         [JsonProperty("tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_rates")]
+#endif
         public List<string> TaxRates { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionItemPriceDataOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionItemPriceDataOptions.cs
index 1d12ac48fe..33a56ad348 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionItemPriceDataOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionItemPriceDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionItemPriceDataOptions : INestedOptions
     {
@@ -11,18 +14,27 @@ public class SubscriptionItemPriceDataOptions : INestedOptions
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// The ID of the product that this price will belong to.
         /// </summary>
         [JsonProperty("product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product")]
+#endif
         public string Product { get; set; }
 
         /// <summary>
         /// The recurring components of a price such as <c>interval</c> and <c>interval_count</c>.
         /// </summary>
         [JsonProperty("recurring")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("recurring")]
+#endif
         public SubscriptionItemPriceDataRecurringOptions Recurring { get; set; }
 
         /// <summary>
@@ -35,6 +47,9 @@ public class SubscriptionItemPriceDataOptions : INestedOptions
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
@@ -42,6 +57,9 @@ public class SubscriptionItemPriceDataOptions : INestedOptions
         /// how much to charge.
         /// </summary>
         [JsonProperty("unit_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount")]
+#endif
         public long? UnitAmount { get; set; }
 
         /// <summary>
@@ -50,6 +68,9 @@ public class SubscriptionItemPriceDataOptions : INestedOptions
         /// <c>unit_amount_decimal</c> can be set.
         /// </summary>
         [JsonProperty("unit_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_amount_decimal")]
+#endif
         public decimal? UnitAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionItemPriceDataRecurringOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionItemPriceDataRecurringOptions.cs
index c3edeb7d9e..9c0c378bf6 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionItemPriceDataRecurringOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionItemPriceDataRecurringOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionItemPriceDataRecurringOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class SubscriptionItemPriceDataRecurringOptions : INestedOptions
         /// One of: <c>day</c>, <c>month</c>, <c>week</c>, or <c>year</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class SubscriptionItemPriceDataRecurringOptions : INestedOptions
         /// years interval allowed (3 years, 36 months, or 156 weeks).
         /// </summary>
         [JsonProperty("interval_count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_count")]
+#endif
         public long? IntervalCount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionListOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionListOptions.cs
index 7997f37d61..f619378ba3 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionListOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionListOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionListOptions : ListOptionsWithCreated
     {
@@ -11,6 +14,9 @@ public class SubscriptionListOptions : ListOptionsWithCreated
         /// Filter subscriptions by their automatic tax settings.
         /// </summary>
         [JsonProperty("automatic_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatic_tax")]
+#endif
         public SubscriptionAutomaticTaxOptions AutomaticTax { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class SubscriptionListOptions : ListOptionsWithCreated
         /// One of: <c>charge_automatically</c>, or <c>send_invoice</c>.
         /// </summary>
         [JsonProperty("collection_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("collection_method")]
+#endif
         public string CollectionMethod { get; set; }
 
         /// <summary>
@@ -26,6 +35,10 @@ public class SubscriptionListOptions : ListOptionsWithCreated
         /// </summary>
         [JsonProperty("current_period_end")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("current_period_end")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, DateRangeOptions> CurrentPeriodEnd { get; set; }
 
         /// <summary>
@@ -34,24 +47,37 @@ public class SubscriptionListOptions : ListOptionsWithCreated
         /// </summary>
         [JsonProperty("current_period_start")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("current_period_start")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, DateRangeOptions> CurrentPeriodStart { get; set; }
 
         /// <summary>
         /// The ID of the customer whose subscriptions will be retrieved.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
         /// The ID of the plan whose subscriptions will be retrieved.
         /// </summary>
         [JsonProperty("plan")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("plan")]
+#endif
         public string Plan { get; set; }
 
         /// <summary>
         /// Filter for subscriptions that contain this recurring price ID.
         /// </summary>
         [JsonProperty("price")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("price")]
+#endif
         public string Price { get; set; }
 
         /// <summary>
@@ -67,6 +93,9 @@ public class SubscriptionListOptions : ListOptionsWithCreated
         /// <c>unpaid</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -75,6 +104,9 @@ public class SubscriptionListOptions : ListOptionsWithCreated
         /// not set.
         /// </summary>
         [JsonProperty("test_clock")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("test_clock")]
+#endif
         public string TestClock { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionPauseCollectionOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionPauseCollectionOptions.cs
index b70cf8f2df..3256008487 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionPauseCollectionOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionPauseCollectionOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPauseCollectionOptions : INestedOptions
     {
@@ -13,6 +16,9 @@ public class SubscriptionPauseCollectionOptions : INestedOptions
         /// One of: <c>keep_as_draft</c>, <c>mark_uncollectible</c>, or <c>void</c>.
         /// </summary>
         [JsonProperty("behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("behavior")]
+#endif
         public string Behavior { get; set; }
 
         /// <summary>
@@ -20,6 +26,10 @@ public class SubscriptionPauseCollectionOptions : INestedOptions
         /// </summary>
         [JsonProperty("resumes_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("resumes_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ResumesAt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsOptions.cs
index c8fcd499f8..97820a7aab 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPaymentSettingsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class SubscriptionPaymentSettingsOptions : INestedOptions
         /// subscription.
         /// </summary>
         [JsonProperty("payment_method_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_options")]
+#endif
         public SubscriptionPaymentSettingsPaymentMethodOptionsOptions PaymentMethodOptions { get; set; }
 
         /// <summary>
@@ -30,6 +36,9 @@ public class SubscriptionPaymentSettingsOptions : INestedOptions
         /// <c>sofort</c>, <c>swish</c>, <c>us_bank_account</c>, or <c>wechat_pay</c>.
         /// </summary>
         [JsonProperty("payment_method_types")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_types")]
+#endif
         public List<string> PaymentMethodTypes { get; set; }
 
         /// <summary>
@@ -38,6 +47,9 @@ public class SubscriptionPaymentSettingsOptions : INestedOptions
         /// One of: <c>off</c>, or <c>on_subscription</c>.
         /// </summary>
         [JsonProperty("save_default_payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("save_default_payment_method")]
+#endif
         public string SaveDefaultPaymentMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebitMandateOptionsOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebitMandateOptionsOptions.cs
index 7b89878e44..3d118b421b 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebitMandateOptionsOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebitMandateOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebitMandateOptionsOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebitMandateOpti
         /// One of: <c>business</c>, or <c>personal</c>.
         /// </summary>
         [JsonProperty("transaction_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction_type")]
+#endif
         public string TransactionType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebitOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebitOptions.cs
index dbbb0505b3..e14fb3a7d9 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebitOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebitOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebitOptions : I
         /// Additional fields for Mandate creation.
         /// </summary>
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebitMandateOptionsOptions MandateOptions { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebitOptions : I
         /// One of: <c>automatic</c>, <c>instant</c>, or <c>microdeposits</c>.
         /// </summary>
         [JsonProperty("verification_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification_method")]
+#endif
         public string VerificationMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsBancontactOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsBancontactOptions.cs
index 72b05a89fa..3ab9cd37ad 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsBancontactOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsBancontactOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPaymentSettingsPaymentMethodOptionsBancontactOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsBancontactOptions :
         /// One of: <c>de</c>, <c>en</c>, <c>fr</c>, or <c>nl</c>.
         /// </summary>
         [JsonProperty("preferred_language")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred_language")]
+#endif
         public string PreferredLanguage { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCardMandateOptionsOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCardMandateOptionsOptions.cs
index ca61142116..8a02191dc6 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCardMandateOptionsOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCardMandateOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPaymentSettingsPaymentMethodOptionsCardMandateOptionsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsCardMandateOptionsOp
         /// Amount to be charged for future payments.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsCardMandateOptionsOp
         /// One of: <c>fixed</c>, or <c>maximum</c>.
         /// </summary>
         [JsonProperty("amount_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_type")]
+#endif
         public string AmountType { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsCardMandateOptionsOp
         /// customer.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCardOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCardOptions.cs
index f9f49881d2..685c2c2810 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCardOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPaymentSettingsPaymentMethodOptionsCardOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsCardOptions : INeste
         /// Configuration options for setting up an eMandate for cards issued in India.
         /// </summary>
         [JsonProperty("mandate_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mandate_options")]
+#endif
         public SubscriptionPaymentSettingsPaymentMethodOptionsCardMandateOptionsOptions MandateOptions { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsCardOptions : INeste
         /// <c>mastercard</c>, <c>unionpay</c>, <c>unknown</c>, or <c>visa</c>.
         /// </summary>
         [JsonProperty("network")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network")]
+#endif
         public string Network { get; set; }
 
         /// <summary>
@@ -33,6 +42,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsCardOptions : INeste
         /// One of: <c>any</c>, <c>automatic</c>, or <c>challenge</c>.
         /// </summary>
         [JsonProperty("request_three_d_secure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("request_three_d_secure")]
+#endif
         public string RequestThreeDSecure { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransferOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransferOptions.cs
index 265c4af986..527cd9a931 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransferOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransferOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransferOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankT
         /// <c>BE</c>, <c>DE</c>, <c>ES</c>, <c>FR</c>, <c>IE</c>, or <c>NL</c>.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferOptions.cs
index 2fc44854f1..7780a91404 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankT
         /// Configuration for eu_bank_transfer funding type.
         /// </summary>
         [JsonProperty("eu_bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eu_bank_transfer")]
+#endif
         public SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferEuBankTransferOptions EuBankTransfer { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankT
         /// <c>mx_bank_transfer</c>, or <c>us_bank_transfer</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceOptions.cs
index bcfea4cb4c..735e08e3cf 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceOptio
         /// <c>bank_transfer</c>.
         /// </summary>
         [JsonProperty("bank_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_transfer")]
+#endif
         public SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceBankTransferOptions BankTransfer { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceOptio
         /// balance. Permitted values include: <c>bank_transfer</c>.
         /// </summary>
         [JsonProperty("funding_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding_type")]
+#endif
         public string FundingType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsOptions.cs
index 60c0ae3924..d679265b5a 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPaymentSettingsPaymentMethodOptionsOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsOptions : INestedOpt
         /// options to pass to the invoice’s PaymentIntent.
         /// </summary>
         [JsonProperty("acss_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acss_debit")]
+#endif
         public SubscriptionPaymentSettingsPaymentMethodOptionsAcssDebitOptions AcssDebit { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsOptions : INestedOpt
         /// the invoice’s PaymentIntent.
         /// </summary>
         [JsonProperty("bancontact")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bancontact")]
+#endif
         public SubscriptionPaymentSettingsPaymentMethodOptionsBancontactOptions Bancontact { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsOptions : INestedOpt
         /// invoice’s PaymentIntent.
         /// </summary>
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public SubscriptionPaymentSettingsPaymentMethodOptionsCardOptions Card { get; set; }
 
         /// <summary>
@@ -31,6 +43,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsOptions : INestedOpt
         /// the invoice’s PaymentIntent.
         /// </summary>
         [JsonProperty("customer_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_balance")]
+#endif
         public SubscriptionPaymentSettingsPaymentMethodOptionsCustomerBalanceOptions CustomerBalance { get; set; }
 
         /// <summary>
@@ -38,6 +53,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsOptions : INestedOpt
         /// invoice’s PaymentIntent.
         /// </summary>
         [JsonProperty("konbini")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("konbini")]
+#endif
         public SubscriptionPaymentSettingsPaymentMethodOptionsKonbiniOptions Konbini { get; set; }
 
         /// <summary>
@@ -45,6 +63,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsOptions : INestedOpt
         /// pass to the invoice’s PaymentIntent.
         /// </summary>
         [JsonProperty("sepa_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_debit")]
+#endif
         public SubscriptionPaymentSettingsPaymentMethodOptionsSepaDebitOptions SepaDebit { get; set; }
 
         /// <summary>
@@ -52,6 +73,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsOptions : INestedOpt
         /// to the invoice’s PaymentIntent.
         /// </summary>
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountOptions UsBankAccount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsFiltersOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsFiltersOptions.cs
index 23afae88d7..4c14149afe 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsFiltersOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsFiltersOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsFiltersOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinanci
         /// One of: <c>checking</c>, or <c>savings</c>.
         /// </summary>
         [JsonProperty("account_subcategories")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_subcategories")]
+#endif
         public List<string> AccountSubcategories { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions.cs
index 4bc7ee0211..ca8baa8034 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinanci
         /// method.
         /// </summary>
         [JsonProperty("filters")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("filters")]
+#endif
         public SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsFiltersOptions Filters { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinanci
         /// <c>transactions</c>.
         /// </summary>
         [JsonProperty("permissions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("permissions")]
+#endif
         public List<string> Permissions { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinanci
         /// One of: <c>balances</c>, <c>ownership</c>, or <c>transactions</c>.
         /// </summary>
         [JsonProperty("prefetch")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("prefetch")]
+#endif
         public List<string> Prefetch { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountOptions.cs
index 4a785a405b..8de352fcb5 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountOptions
         /// Additional fields for Financial Connections Session creation.
         /// </summary>
         [JsonProperty("financial_connections")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_connections")]
+#endif
         public SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountFinancialConnectionsOptions FinancialConnections { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class SubscriptionPaymentSettingsPaymentMethodOptionsUsBankAccountOptions
         /// One of: <c>automatic</c>, <c>instant</c>, or <c>microdeposits</c>.
         /// </summary>
         [JsonProperty("verification_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification_method")]
+#endif
         public string VerificationMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionPendingInvoiceItemIntervalOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionPendingInvoiceItemIntervalOptions.cs
index 52f534f884..4a70407a9a 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionPendingInvoiceItemIntervalOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionPendingInvoiceItemIntervalOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionPendingInvoiceItemIntervalOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class SubscriptionPendingInvoiceItemIntervalOptions : INestedOptions
         /// One of: <c>day</c>, <c>month</c>, <c>week</c>, or <c>year</c>.
         /// </summary>
         [JsonProperty("interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval")]
+#endif
         public string Interval { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class SubscriptionPendingInvoiceItemIntervalOptions : INestedOptions
         /// year, 12 months, or 52 weeks).
         /// </summary>
         [JsonProperty("interval_count")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interval_count")]
+#endif
         public long? IntervalCount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionResumeOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionResumeOptions.cs
index f2bb10e87d..fc00dbf275 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionResumeOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionResumeOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionResumeOptions : BaseOptions
     {
@@ -15,6 +18,9 @@ public class SubscriptionResumeOptions : BaseOptions
         /// One of: <c>now</c>, or <c>unchanged</c>.
         /// </summary>
         [JsonProperty("billing_cycle_anchor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_cycle_anchor")]
+#endif
         public SubscriptionBillingCycleAnchor BillingCycleAnchor { get; set; }
 
         /// <summary>
@@ -26,6 +32,9 @@ public class SubscriptionResumeOptions : BaseOptions
         /// One of: <c>always_invoice</c>, <c>create_prorations</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("proration_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("proration_behavior")]
+#endif
         public string ProrationBehavior { get; set; }
 
         /// <summary>
@@ -36,6 +45,10 @@ public class SubscriptionResumeOptions : BaseOptions
         /// </summary>
         [JsonProperty("proration_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("proration_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ProrationDate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionService.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionService.cs
index 6d584b1199..e0118620d0 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionService.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class SubscriptionService : Service<Subscription>,
+    public class SubscriptionService : Service,
         ICreatable<Subscription, SubscriptionCreateOptions>,
         IListable<Subscription, SubscriptionListOptions>,
         IRetrievable<Subscription, SubscriptionGetOptions>,
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionTransferDataOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionTransferDataOptions.cs
index 8a6e88c26f..1863938965 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionTransferDataOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionTransferDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionTransferDataOptions : INestedOptions
     {
@@ -12,12 +15,18 @@ public class SubscriptionTransferDataOptions : INestedOptions
         /// destination.
         /// </summary>
         [JsonProperty("amount_percent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_percent")]
+#endif
         public decimal? AmountPercent { get; set; }
 
         /// <summary>
         /// ID of an existing, connected Stripe account.
         /// </summary>
         [JsonProperty("destination")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination")]
+#endif
         public string Destination { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionTrialSettingsEndBehaviorOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionTrialSettingsEndBehaviorOptions.cs
index d5543344d8..3d96b69716 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionTrialSettingsEndBehaviorOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionTrialSettingsEndBehaviorOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionTrialSettingsEndBehaviorOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class SubscriptionTrialSettingsEndBehaviorOptions : INestedOptions
         /// One of: <c>cancel</c>, <c>create_invoice</c>, or <c>pause</c>.
         /// </summary>
         [JsonProperty("missing_payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("missing_payment_method")]
+#endif
         public string MissingPaymentMethod { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionTrialSettingsOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionTrialSettingsOptions.cs
index e81f53032e..a66cdfdb7c 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionTrialSettingsOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionTrialSettingsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionTrialSettingsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SubscriptionTrialSettingsOptions : INestedOptions
         /// Defines how the subscription should behave when the user's free trial ends.
         /// </summary>
         [JsonProperty("end_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end_behavior")]
+#endif
         public SubscriptionTrialSettingsEndBehaviorOptions EndBehavior { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Subscriptions/SubscriptionUpdateOptions.cs b/src/Stripe.net/Services/Subscriptions/SubscriptionUpdateOptions.cs
index 36e7843c88..b3d35c24cd 100644
--- a/src/Stripe.net/Services/Subscriptions/SubscriptionUpdateOptions.cs
+++ b/src/Stripe.net/Services/Subscriptions/SubscriptionUpdateOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SubscriptionUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -13,6 +16,9 @@ public class SubscriptionUpdateOptions : BaseOptions, IHasMetadata
         /// invoice for this subscription. You may pass up to 20 items.
         /// </summary>
         [JsonProperty("add_invoice_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("add_invoice_items")]
+#endif
         public List<SubscriptionAddInvoiceItemOptions> AddInvoiceItems { get; set; }
 
         /// <summary>
@@ -24,6 +30,9 @@ public class SubscriptionUpdateOptions : BaseOptions, IHasMetadata
         /// href="https://stripe.com/docs/connect/subscriptions#collecting-fees-on-subscriptions">documentation</a>.
         /// </summary>
         [JsonProperty("application_fee_percent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("application_fee_percent")]
+#endif
         public decimal? ApplicationFeePercent { get; set; }
 
         /// <summary>
@@ -31,6 +40,9 @@ public class SubscriptionUpdateOptions : BaseOptions, IHasMetadata
         /// parameter when the existing value is being changed.
         /// </summary>
         [JsonProperty("automatic_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("automatic_tax")]
+#endif
         public SubscriptionAutomaticTaxOptions AutomaticTax { get; set; }
 
         /// <summary>
@@ -41,6 +53,9 @@ public class SubscriptionUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>now</c>, or <c>unchanged</c>.
         /// </summary>
         [JsonProperty("billing_cycle_anchor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_cycle_anchor")]
+#endif
         public SubscriptionBillingCycleAnchor BillingCycleAnchor { get; set; }
 
         /// <summary>
@@ -48,6 +63,9 @@ public class SubscriptionUpdateOptions : BaseOptions, IHasMetadata
         /// new billing period. Pass an empty string to remove previously-defined thresholds.
         /// </summary>
         [JsonProperty("billing_thresholds")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_thresholds")]
+#endif
         public SubscriptionBillingThresholdsOptions BillingThresholds { get; set; }
 
         /// <summary>
@@ -58,6 +76,10 @@ public class SubscriptionUpdateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("cancel_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancel_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? CancelAt { get; set; }
 
         /// <summary>
@@ -65,12 +87,18 @@ public class SubscriptionUpdateOptions : BaseOptions, IHasMetadata
         /// (<c>current_period_end</c>). Defaults to <c>false</c>.
         /// </summary>
         [JsonProperty("cancel_at_period_end")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancel_at_period_end")]
+#endif
         public bool? CancelAtPeriodEnd { get; set; }
 
         /// <summary>
         /// Details about why this subscription was cancelled.
         /// </summary>
         [JsonProperty("cancellation_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancellation_details")]
+#endif
         public SubscriptionCancellationDetailsOptions CancellationDetails { get; set; }
 
         /// <summary>
@@ -82,6 +110,9 @@ public class SubscriptionUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>charge_automatically</c>, or <c>send_invoice</c>.
         /// </summary>
         [JsonProperty("collection_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("collection_method")]
+#endif
         public string CollectionMethod { get; set; }
 
         /// <summary>
@@ -90,6 +121,9 @@ public class SubscriptionUpdateOptions : BaseOptions, IHasMetadata
         /// deprecated and will be removed in a future API version. Use <c>discounts</c> instead.
         /// </summary>
         [JsonProperty("coupon")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("coupon")]
+#endif
         public string Coupon { get; set; }
 
         /// <summary>
@@ -97,6 +131,9 @@ public class SubscriptionUpdateOptions : BaseOptions, IHasMetadata
         /// for subscriptions where <c>collection_method</c> is set to <c>send_invoice</c>.
         /// </summary>
         [JsonProperty("days_until_due")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("days_until_due")]
+#endif
         public long? DaysUntilDue { get; set; }
 
         /// <summary>
@@ -108,6 +145,9 @@ public class SubscriptionUpdateOptions : BaseOptions, IHasMetadata
         /// href="https://stripe.com/docs/api/customers/object#customer_object-default_source">default_source</a>.
         /// </summary>
         [JsonProperty("default_payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_payment_method")]
+#endif
         public string DefaultPaymentMethod { get; set; }
 
         /// <summary>
@@ -120,6 +160,9 @@ public class SubscriptionUpdateOptions : BaseOptions, IHasMetadata
         /// href="https://stripe.com/docs/api/customers/object#customer_object-default_source">default_source</a>.
         /// </summary>
         [JsonProperty("default_source")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_source")]
+#endif
         public string DefaultSource { get; set; }
 
         /// <summary>
@@ -129,6 +172,9 @@ public class SubscriptionUpdateOptions : BaseOptions, IHasMetadata
         /// rates.
         /// </summary>
         [JsonProperty("default_tax_rates")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("default_tax_rates")]
+#endif
         public List<string> DefaultTaxRates { get; set; }
 
         /// <summary>
@@ -137,6 +183,9 @@ public class SubscriptionUpdateOptions : BaseOptions, IHasMetadata
         /// and certain local payment methods UIs.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -144,18 +193,27 @@ public class SubscriptionUpdateOptions : BaseOptions, IHasMetadata
         /// inherits the discount from the subscription's customer.
         /// </summary>
         [JsonProperty("discounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("discounts")]
+#endif
         public List<SubscriptionDiscountOptions> Discounts { get; set; }
 
         /// <summary>
         /// All invoices will be billed using the specified settings.
         /// </summary>
         [JsonProperty("invoice_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("invoice_settings")]
+#endif
         public SubscriptionInvoiceSettingsOptions InvoiceSettings { get; set; }
 
         /// <summary>
         /// A list of up to 20 subscription items, each with an attached price.
         /// </summary>
         [JsonProperty("items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("items")]
+#endif
         public List<SubscriptionItemOptions> Items { get; set; }
 
         /// <summary>
@@ -165,6 +223,9 @@ public class SubscriptionUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -172,12 +233,18 @@ public class SubscriptionUpdateOptions : BaseOptions, IHasMetadata
         /// Defaults to <c>false</c> (on-session).
         /// </summary>
         [JsonProperty("off_session")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("off_session")]
+#endif
         public bool? OffSession { get; set; }
 
         /// <summary>
         /// The account on behalf of which to charge, for each of the subscription's invoices.
         /// </summary>
         [JsonProperty("on_behalf_of")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("on_behalf_of")]
+#endif
         public string OnBehalfOf { get; set; }
 
         /// <summary>
@@ -187,6 +254,9 @@ public class SubscriptionUpdateOptions : BaseOptions, IHasMetadata
         /// collection</a>.
         /// </summary>
         [JsonProperty("pause_collection")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pause_collection")]
+#endif
         public SubscriptionPauseCollectionOptions PauseCollection { get; set; }
 
         /// <summary>
@@ -221,12 +291,18 @@ public class SubscriptionUpdateOptions : BaseOptions, IHasMetadata
         /// or <c>pending_if_incomplete</c>.
         /// </summary>
         [JsonProperty("payment_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_behavior")]
+#endif
         public string PaymentBehavior { get; set; }
 
         /// <summary>
         /// Payment settings to pass to invoices created by the subscription.
         /// </summary>
         [JsonProperty("payment_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_settings")]
+#endif
         public SubscriptionPaymentSettingsOptions PaymentSettings { get; set; }
 
         /// <summary>
@@ -235,6 +311,9 @@ public class SubscriptionUpdateOptions : BaseOptions, IHasMetadata
         /// invoice</a> for the given subscription at the specified interval.
         /// </summary>
         [JsonProperty("pending_invoice_item_interval")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pending_invoice_item_interval")]
+#endif
         public SubscriptionPendingInvoiceItemIntervalOptions PendingInvoiceItemInterval { get; set; }
 
         /// <summary>
@@ -244,6 +323,9 @@ public class SubscriptionUpdateOptions : BaseOptions, IHasMetadata
         /// <c>discounts</c> instead.
         /// </summary>
         [JsonProperty("promotion_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promotion_code")]
+#endif
         public string PromotionCode { get; set; }
 
         /// <summary>
@@ -255,6 +337,9 @@ public class SubscriptionUpdateOptions : BaseOptions, IHasMetadata
         /// One of: <c>always_invoice</c>, <c>create_prorations</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("proration_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("proration_behavior")]
+#endif
         public string ProrationBehavior { get; set; }
 
         /// <summary>
@@ -266,6 +351,10 @@ public class SubscriptionUpdateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("proration_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("proration_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ProrationDate { get; set; }
 
         /// <summary>
@@ -274,6 +363,9 @@ public class SubscriptionUpdateOptions : BaseOptions, IHasMetadata
         /// charges. This will be unset if you POST an empty value.
         /// </summary>
         [JsonProperty("transfer_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_data")]
+#endif
         public SubscriptionTransferDataOptions TransferData { get; set; }
 
         /// <summary>
@@ -286,6 +378,10 @@ public class SubscriptionUpdateOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("trial_end")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_end")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, SubscriptionTrialEnd> TrialEnd { get; set; }
 
         /// <summary>
@@ -296,12 +392,18 @@ public class SubscriptionUpdateOptions : BaseOptions, IHasMetadata
         /// periods on subscriptions</a> to learn more.
         /// </summary>
         [JsonProperty("trial_from_plan")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_from_plan")]
+#endif
         public bool? TrialFromPlan { get; set; }
 
         /// <summary>
         /// Settings related to subscription trials.
         /// </summary>
         [JsonProperty("trial_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trial_settings")]
+#endif
         public SubscriptionTrialSettingsOptions TrialSettings { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/CalculationLineItems/CalculationLineItemService.cs b/src/Stripe.net/Services/Tax/CalculationLineItems/CalculationLineItemService.cs
index 46efade691..bf405d8cc0 100644
--- a/src/Stripe.net/Services/Tax/CalculationLineItems/CalculationLineItemService.cs
+++ b/src/Stripe.net/Services/Tax/CalculationLineItems/CalculationLineItemService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Tax
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class CalculationLineItemService : ServiceNested<CalculationLineItem>,
+    public class CalculationLineItemService : Service,
         INestedListable<CalculationLineItem, CalculationLineItemListOptions>
     {
         public CalculationLineItemService()
diff --git a/src/Stripe.net/Services/Tax/Calculations/CalculationCreateOptions.cs b/src/Stripe.net/Services/Tax/Calculations/CalculationCreateOptions.cs
index b87a6e3b86..ffe74554e5 100644
--- a/src/Stripe.net/Services/Tax/Calculations/CalculationCreateOptions.cs
+++ b/src/Stripe.net/Services/Tax/Calculations/CalculationCreateOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe.Tax
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CalculationCreateOptions : BaseOptions
     {
@@ -14,6 +17,9 @@ public class CalculationCreateOptions : BaseOptions
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -21,30 +27,45 @@ public class CalculationCreateOptions : BaseOptions
         /// address and tax IDs are copied to <c>customer_details</c>.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
         /// Details about the customer, including address and tax IDs.
         /// </summary>
         [JsonProperty("customer_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_details")]
+#endif
         public CalculationCustomerDetailsOptions CustomerDetails { get; set; }
 
         /// <summary>
         /// A list of items the customer is purchasing.
         /// </summary>
         [JsonProperty("line_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line_items")]
+#endif
         public List<CalculationLineItemOptions> LineItems { get; set; }
 
         /// <summary>
         /// Details about the address from which the goods are being shipped.
         /// </summary>
         [JsonProperty("ship_from_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ship_from_details")]
+#endif
         public CalculationShipFromDetailsOptions ShipFromDetails { get; set; }
 
         /// <summary>
         /// Shipping cost details to be used for the calculation.
         /// </summary>
         [JsonProperty("shipping_cost")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_cost")]
+#endif
         public CalculationShippingCostOptions ShippingCost { get; set; }
 
         /// <summary>
@@ -54,6 +75,10 @@ public class CalculationCreateOptions : BaseOptions
         /// </summary>
         [JsonProperty("tax_date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? TaxDate { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Calculations/CalculationCustomerDetailsOptions.cs b/src/Stripe.net/Services/Tax/Calculations/CalculationCustomerDetailsOptions.cs
index 53b26c76a2..e2d0e6d56b 100644
--- a/src/Stripe.net/Services/Tax/Calculations/CalculationCustomerDetailsOptions.cs
+++ b/src/Stripe.net/Services/Tax/Calculations/CalculationCustomerDetailsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Tax
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CalculationCustomerDetailsOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class CalculationCustomerDetailsOptions : INestedOptions
         /// The customer's postal address (for example, home or business location).
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public AddressOptions Address { get; set; }
 
         /// <summary>
@@ -17,12 +23,18 @@ public class CalculationCustomerDetailsOptions : INestedOptions
         /// One of: <c>billing</c>, or <c>shipping</c>.
         /// </summary>
         [JsonProperty("address_source")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_source")]
+#endif
         public string AddressSource { get; set; }
 
         /// <summary>
         /// The customer's IP address (IPv4 or IPv6).
         /// </summary>
         [JsonProperty("ip_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip_address")]
+#endif
         public string IpAddress { get; set; }
 
         /// <summary>
@@ -31,6 +43,9 @@ public class CalculationCustomerDetailsOptions : INestedOptions
         /// tax IDs for correctness.
         /// </summary>
         [JsonProperty("tax_ids")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_ids")]
+#endif
         public List<CalculationCustomerDetailsTaxIdOptions> TaxIds { get; set; }
 
         /// <summary>
@@ -41,6 +56,9 @@ public class CalculationCustomerDetailsOptions : INestedOptions
         /// One of: <c>customer_exempt</c>, <c>none</c>, or <c>reverse_charge</c>.
         /// </summary>
         [JsonProperty("taxability_override")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("taxability_override")]
+#endif
         public string TaxabilityOverride { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Calculations/CalculationCustomerDetailsTaxIdOptions.cs b/src/Stripe.net/Services/Tax/Calculations/CalculationCustomerDetailsTaxIdOptions.cs
index 345a637c99..5798619d92 100644
--- a/src/Stripe.net/Services/Tax/Calculations/CalculationCustomerDetailsTaxIdOptions.cs
+++ b/src/Stripe.net/Services/Tax/Calculations/CalculationCustomerDetailsTaxIdOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CalculationCustomerDetailsTaxIdOptions : INestedOptions
     {
@@ -48,12 +51,18 @@ public class CalculationCustomerDetailsTaxIdOptions : INestedOptions
         /// <c>vn_tin</c>, <c>za_vat</c>, <c>zm_tin</c>, or <c>zw_tin</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
         /// Value of the tax ID.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Calculations/CalculationLineItemOptions.cs b/src/Stripe.net/Services/Tax/Calculations/CalculationLineItemOptions.cs
index e75a5c0919..8bf978c832 100644
--- a/src/Stripe.net/Services/Tax/Calculations/CalculationLineItemOptions.cs
+++ b/src/Stripe.net/Services/Tax/Calculations/CalculationLineItemOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CalculationLineItemOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class CalculationLineItemOptions : INestedOptions
         /// calculated on top of this amount.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class CalculationLineItemOptions : INestedOptions
         /// <c>tax_code</c>.
         /// </summary>
         [JsonProperty("product")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("product")]
+#endif
         public string Product { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class CalculationLineItemOptions : INestedOptions
         /// <c>quantity=4</c>, the calculated unit price is 25.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         /// <summary>
@@ -35,6 +47,9 @@ public class CalculationLineItemOptions : INestedOptions
         /// href="https://stripe.com/docs/tax/reports">tax reports</a>.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
@@ -42,6 +57,9 @@ public class CalculationLineItemOptions : INestedOptions
         /// One of: <c>exclusive</c>, or <c>inclusive</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
@@ -51,6 +69,9 @@ public class CalculationLineItemOptions : INestedOptions
         /// default tax code from your Tax Settings.
         /// </summary>
         [JsonProperty("tax_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_code")]
+#endif
         public string TaxCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Calculations/CalculationService.cs b/src/Stripe.net/Services/Tax/Calculations/CalculationService.cs
index 79de8eb887..67298c8e6a 100644
--- a/src/Stripe.net/Services/Tax/Calculations/CalculationService.cs
+++ b/src/Stripe.net/Services/Tax/Calculations/CalculationService.cs
@@ -7,7 +7,7 @@ namespace Stripe.Tax
     using System.Threading;
     using System.Threading.Tasks;
 
-    public partial class CalculationService : Service<Calculation>,
+    public partial class CalculationService : Service,
         ICreatable<Calculation, CalculationCreateOptions>,
         IRetrievable<Calculation, CalculationGetOptions>
     {
diff --git a/src/Stripe.net/Services/Tax/Calculations/CalculationShipFromDetailsOptions.cs b/src/Stripe.net/Services/Tax/Calculations/CalculationShipFromDetailsOptions.cs
index d55c3f9364..68716b43d2 100644
--- a/src/Stripe.net/Services/Tax/Calculations/CalculationShipFromDetailsOptions.cs
+++ b/src/Stripe.net/Services/Tax/Calculations/CalculationShipFromDetailsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CalculationShipFromDetailsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class CalculationShipFromDetailsOptions : INestedOptions
         /// The address from which the goods are being shipped from.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public AddressOptions Address { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Calculations/CalculationShippingCostOptions.cs b/src/Stripe.net/Services/Tax/Calculations/CalculationShippingCostOptions.cs
index 7c54bd8761..9106043be3 100644
--- a/src/Stripe.net/Services/Tax/Calculations/CalculationShippingCostOptions.cs
+++ b/src/Stripe.net/Services/Tax/Calculations/CalculationShippingCostOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CalculationShippingCostOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class CalculationShippingCostOptions : INestedOptions
         /// includes taxes. Otherwise, taxes are calculated on top of this amount.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class CalculationShippingCostOptions : INestedOptions
         /// <c>tax_behavior</c> parameters.
         /// </summary>
         [JsonProperty("shipping_rate")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_rate")]
+#endif
         public string ShippingRate { get; set; }
 
         /// <summary>
@@ -29,6 +38,9 @@ public class CalculationShippingCostOptions : INestedOptions
         /// One of: <c>exclusive</c>, or <c>inclusive</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
@@ -37,6 +49,9 @@ public class CalculationShippingCostOptions : INestedOptions
         /// href="https://dashboard.stripe.com/settings/tax">Tax Settings</a> is used.
         /// </summary>
         [JsonProperty("tax_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_code")]
+#endif
         public string TaxCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsAeOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsAeOptions.cs
index 6bef3e3d54..e6206cfe96 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsAeOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsAeOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsAeOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsAeOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsAlOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsAlOptions.cs
index feb5d37e4f..cd86f5ca04 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsAlOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsAlOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsAlOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsAlOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsAmOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsAmOptions.cs
index 15a3385930..2f6d876036 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsAmOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsAmOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsAmOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsAmOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsAoOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsAoOptions.cs
index 329bfd8085..e88a5e8873 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsAoOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsAoOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsAoOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsAoOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsAtOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsAtOptions.cs
index 8949c345ef..c089e33e6d 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsAtOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsAtOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsAtOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsAtOptions : INestedOptions
         /// Options for the standard registration.
         /// </summary>
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsAtStandardOptions Standard { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RegistrationCountryOptionsAtOptions : INestedOptions
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsAtStandardOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsAtStandardOptions.cs
index 99094534fd..61295a02eb 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsAtStandardOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsAtStandardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsAtStandardOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsAtStandardOptions : INestedOptions
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsAuOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsAuOptions.cs
index bb39fa7f88..8cce32f610 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsAuOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsAuOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsAuOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsAuOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBaOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBaOptions.cs
index 383824d934..7d3d661fe1 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBaOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBaOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsBaOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsBaOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBbOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBbOptions.cs
index 4e3c33cddc..867a817518 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBbOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBbOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsBbOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsBbOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBeOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBeOptions.cs
index 00912698aa..ad32ceaba4 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBeOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBeOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsBeOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsBeOptions : INestedOptions
         /// Options for the standard registration.
         /// </summary>
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsBeStandardOptions Standard { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RegistrationCountryOptionsBeOptions : INestedOptions
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBeStandardOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBeStandardOptions.cs
index 1c4eb69454..a1938c895f 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBeStandardOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBeStandardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsBeStandardOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsBeStandardOptions : INestedOptions
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBgOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBgOptions.cs
index 69573056a4..d9a2c68258 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBgOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBgOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsBgOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsBgOptions : INestedOptions
         /// Options for the standard registration.
         /// </summary>
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsBgStandardOptions Standard { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RegistrationCountryOptionsBgOptions : INestedOptions
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBgStandardOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBgStandardOptions.cs
index 0c180dc21b..d00f703def 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBgStandardOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBgStandardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsBgStandardOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsBgStandardOptions : INestedOptions
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBhOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBhOptions.cs
index 4a9f77672a..74c75845d5 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBhOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBhOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsBhOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsBhOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBsOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBsOptions.cs
index b476fd8967..040f6d834c 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBsOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsBsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsBsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsBsOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsByOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsByOptions.cs
index 82e52ee210..5438b95597 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsByOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsByOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsByOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsByOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCaOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCaOptions.cs
index 6c2418efa5..433fda8d97 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCaOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCaOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsCaOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsCaOptions : INestedOptions
         /// Options for the provincial tax registration.
         /// </summary>
         [JsonProperty("province_standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("province_standard")]
+#endif
         public RegistrationCountryOptionsCaProvinceStandardOptions ProvinceStandard { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RegistrationCountryOptionsCaOptions : INestedOptions
         /// One of: <c>province_standard</c>, <c>simplified</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCaProvinceStandardOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCaProvinceStandardOptions.cs
index 5abe94f2f3..10ec4eb311 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCaProvinceStandardOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCaProvinceStandardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsCaProvinceStandardOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsCaProvinceStandardOptions : INestedOption
         /// 3166-2</a>).
         /// </summary>
         [JsonProperty("province")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("province")]
+#endif
         public string Province { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCdOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCdOptions.cs
index 5701b1c6e8..f50a9fe605 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCdOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCdOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsCdOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsCdOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsChOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsChOptions.cs
index 724b79330a..b2dc331954 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsChOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsChOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsChOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsChOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsClOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsClOptions.cs
index 17913c1764..d56e2f74e8 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsClOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsClOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsClOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsClOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCoOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCoOptions.cs
index 26fce2141b..e23382124e 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCoOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCoOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsCoOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsCoOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCrOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCrOptions.cs
index 316829af48..7c0a8cfef3 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCrOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCrOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsCrOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsCrOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCyOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCyOptions.cs
index 32d619cf0c..6759e6d0e7 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCyOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCyOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsCyOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsCyOptions : INestedOptions
         /// Options for the standard registration.
         /// </summary>
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsCyStandardOptions Standard { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RegistrationCountryOptionsCyOptions : INestedOptions
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCyStandardOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCyStandardOptions.cs
index 03e8430e74..ba28d8bef4 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCyStandardOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCyStandardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsCyStandardOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsCyStandardOptions : INestedOptions
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCzOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCzOptions.cs
index c215f4c458..3399bfd325 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCzOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCzOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsCzOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsCzOptions : INestedOptions
         /// Options for the standard registration.
         /// </summary>
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsCzStandardOptions Standard { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RegistrationCountryOptionsCzOptions : INestedOptions
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCzStandardOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCzStandardOptions.cs
index 436ac24613..65f40d8477 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCzStandardOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsCzStandardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsCzStandardOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsCzStandardOptions : INestedOptions
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsDeOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsDeOptions.cs
index 2cdcf5a961..1071065b40 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsDeOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsDeOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsDeOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsDeOptions : INestedOptions
         /// Options for the standard registration.
         /// </summary>
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsDeStandardOptions Standard { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RegistrationCountryOptionsDeOptions : INestedOptions
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsDeStandardOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsDeStandardOptions.cs
index b1691df88b..2325b744fe 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsDeStandardOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsDeStandardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsDeStandardOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsDeStandardOptions : INestedOptions
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsDkOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsDkOptions.cs
index dbd2802da2..b204505baf 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsDkOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsDkOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsDkOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsDkOptions : INestedOptions
         /// Options for the standard registration.
         /// </summary>
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsDkStandardOptions Standard { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RegistrationCountryOptionsDkOptions : INestedOptions
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsDkStandardOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsDkStandardOptions.cs
index a0de9baaf7..280d3c9dcf 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsDkStandardOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsDkStandardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsDkStandardOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsDkStandardOptions : INestedOptions
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsEcOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsEcOptions.cs
index d849747c56..b72bfebd60 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsEcOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsEcOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsEcOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsEcOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsEeOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsEeOptions.cs
index c3616f4fa5..abd52e8a8f 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsEeOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsEeOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsEeOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsEeOptions : INestedOptions
         /// Options for the standard registration.
         /// </summary>
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsEeStandardOptions Standard { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RegistrationCountryOptionsEeOptions : INestedOptions
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsEeStandardOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsEeStandardOptions.cs
index 23e339897b..99db8aa03a 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsEeStandardOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsEeStandardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsEeStandardOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsEeStandardOptions : INestedOptions
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsEgOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsEgOptions.cs
index 001be2c18f..b3ef0c7aaa 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsEgOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsEgOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsEgOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsEgOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsEsOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsEsOptions.cs
index 165cb29aab..a623a084b2 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsEsOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsEsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsEsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsEsOptions : INestedOptions
         /// Options for the standard registration.
         /// </summary>
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsEsStandardOptions Standard { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RegistrationCountryOptionsEsOptions : INestedOptions
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsEsStandardOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsEsStandardOptions.cs
index af7d903d11..8d54321533 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsEsStandardOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsEsStandardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsEsStandardOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsEsStandardOptions : INestedOptions
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsFiOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsFiOptions.cs
index e21d2cf2b0..e6e9906cee 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsFiOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsFiOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsFiOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsFiOptions : INestedOptions
         /// Options for the standard registration.
         /// </summary>
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsFiStandardOptions Standard { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RegistrationCountryOptionsFiOptions : INestedOptions
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsFiStandardOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsFiStandardOptions.cs
index 7a8a98658d..e6f64b6202 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsFiStandardOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsFiStandardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsFiStandardOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsFiStandardOptions : INestedOptions
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsFrOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsFrOptions.cs
index 21610f5262..9953ab326f 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsFrOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsFrOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsFrOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsFrOptions : INestedOptions
         /// Options for the standard registration.
         /// </summary>
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsFrStandardOptions Standard { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RegistrationCountryOptionsFrOptions : INestedOptions
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsFrStandardOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsFrStandardOptions.cs
index 436f6fe4d2..74b1844a4d 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsFrStandardOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsFrStandardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsFrStandardOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsFrStandardOptions : INestedOptions
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsGbOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsGbOptions.cs
index e8d0793031..29ff8cdedc 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsGbOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsGbOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsGbOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsGbOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsGeOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsGeOptions.cs
index 81e2a264c0..28654c81e9 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsGeOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsGeOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsGeOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsGeOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsGnOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsGnOptions.cs
index 5951fd7dab..d82c99c9d0 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsGnOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsGnOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsGnOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsGnOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsGrOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsGrOptions.cs
index fd3a2d1b12..61bd9fafb8 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsGrOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsGrOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsGrOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsGrOptions : INestedOptions
         /// Options for the standard registration.
         /// </summary>
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsGrStandardOptions Standard { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RegistrationCountryOptionsGrOptions : INestedOptions
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsGrStandardOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsGrStandardOptions.cs
index 6ea5ec58a5..13bbdb45ed 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsGrStandardOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsGrStandardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsGrStandardOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsGrStandardOptions : INestedOptions
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsHrOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsHrOptions.cs
index a52c4c6532..048388c445 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsHrOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsHrOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsHrOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsHrOptions : INestedOptions
         /// Options for the standard registration.
         /// </summary>
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsHrStandardOptions Standard { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RegistrationCountryOptionsHrOptions : INestedOptions
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsHrStandardOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsHrStandardOptions.cs
index 4247e9d4e7..72a3e2672e 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsHrStandardOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsHrStandardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsHrStandardOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsHrStandardOptions : INestedOptions
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsHuOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsHuOptions.cs
index 490cbc9a26..489b769250 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsHuOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsHuOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsHuOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsHuOptions : INestedOptions
         /// Options for the standard registration.
         /// </summary>
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsHuStandardOptions Standard { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RegistrationCountryOptionsHuOptions : INestedOptions
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsHuStandardOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsHuStandardOptions.cs
index 02c15e6cfb..7bf0b3e1ac 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsHuStandardOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsHuStandardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsHuStandardOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsHuStandardOptions : INestedOptions
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsIdOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsIdOptions.cs
index 8a6af9c28b..a2c6102053 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsIdOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsIdOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsIdOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsIdOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsIeOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsIeOptions.cs
index 6b01251f2a..a12424f99b 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsIeOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsIeOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsIeOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsIeOptions : INestedOptions
         /// Options for the standard registration.
         /// </summary>
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsIeStandardOptions Standard { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RegistrationCountryOptionsIeOptions : INestedOptions
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsIeStandardOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsIeStandardOptions.cs
index 81028a8490..cbba198279 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsIeStandardOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsIeStandardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsIeStandardOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsIeStandardOptions : INestedOptions
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsIsOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsIsOptions.cs
index b72fd84522..afa2fce100 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsIsOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsIsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsIsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsIsOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsItOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsItOptions.cs
index 88dbca2a93..1fac2a458d 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsItOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsItOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsItOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsItOptions : INestedOptions
         /// Options for the standard registration.
         /// </summary>
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsItStandardOptions Standard { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RegistrationCountryOptionsItOptions : INestedOptions
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsItStandardOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsItStandardOptions.cs
index 6a9d786484..206def52aa 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsItStandardOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsItStandardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsItStandardOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsItStandardOptions : INestedOptions
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsJpOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsJpOptions.cs
index 8cbc2b585a..143c1c7c8c 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsJpOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsJpOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsJpOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsJpOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsKeOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsKeOptions.cs
index 4625b18576..8d3a382336 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsKeOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsKeOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsKeOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsKeOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsKhOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsKhOptions.cs
index 02d9b5901d..ab67456135 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsKhOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsKhOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsKhOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsKhOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsKrOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsKrOptions.cs
index d34b4cc78b..1271482704 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsKrOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsKrOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsKrOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsKrOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsKzOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsKzOptions.cs
index 69dff327fd..d83b52c9fd 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsKzOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsKzOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsKzOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsKzOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsLtOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsLtOptions.cs
index bc64b829e7..8de69a2e9a 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsLtOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsLtOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsLtOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsLtOptions : INestedOptions
         /// Options for the standard registration.
         /// </summary>
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsLtStandardOptions Standard { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RegistrationCountryOptionsLtOptions : INestedOptions
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsLtStandardOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsLtStandardOptions.cs
index 6bb8295caa..16a03e1ca6 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsLtStandardOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsLtStandardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsLtStandardOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsLtStandardOptions : INestedOptions
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsLuOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsLuOptions.cs
index c74bed0ab5..4dd6e12786 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsLuOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsLuOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsLuOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsLuOptions : INestedOptions
         /// Options for the standard registration.
         /// </summary>
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsLuStandardOptions Standard { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RegistrationCountryOptionsLuOptions : INestedOptions
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsLuStandardOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsLuStandardOptions.cs
index 9e3a5adcc4..c64b4af62a 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsLuStandardOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsLuStandardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsLuStandardOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsLuStandardOptions : INestedOptions
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsLvOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsLvOptions.cs
index d90e980db1..ac3a2bf2a5 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsLvOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsLvOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsLvOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsLvOptions : INestedOptions
         /// Options for the standard registration.
         /// </summary>
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsLvStandardOptions Standard { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RegistrationCountryOptionsLvOptions : INestedOptions
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsLvStandardOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsLvStandardOptions.cs
index 2343c8b41e..3727332057 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsLvStandardOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsLvStandardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsLvStandardOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsLvStandardOptions : INestedOptions
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMaOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMaOptions.cs
index 0ff7cee6d0..704048b1cb 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMaOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMaOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsMaOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsMaOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMdOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMdOptions.cs
index b4044cda41..08f8c535c0 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMdOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMdOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsMdOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsMdOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMeOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMeOptions.cs
index 04c3728be3..ebc5b60a41 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMeOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMeOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsMeOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsMeOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMkOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMkOptions.cs
index 770173b081..c67840484d 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMkOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMkOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsMkOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsMkOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMrOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMrOptions.cs
index 891ca40792..213b36296c 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMrOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMrOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsMrOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsMrOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMtOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMtOptions.cs
index 4325cb6682..9cab44f0b4 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMtOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMtOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsMtOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsMtOptions : INestedOptions
         /// Options for the standard registration.
         /// </summary>
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsMtStandardOptions Standard { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RegistrationCountryOptionsMtOptions : INestedOptions
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMtStandardOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMtStandardOptions.cs
index ef75db376b..1260743c53 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMtStandardOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMtStandardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsMtStandardOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsMtStandardOptions : INestedOptions
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMxOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMxOptions.cs
index 50dbc59e9f..2f8b6e57ad 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMxOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMxOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsMxOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsMxOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMyOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMyOptions.cs
index 676007e0fa..bc23795ed1 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMyOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsMyOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsMyOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsMyOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsNgOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsNgOptions.cs
index 4bb1031daf..bd87c910e9 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsNgOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsNgOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsNgOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsNgOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsNlOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsNlOptions.cs
index dbbc9b85a0..0947ef6199 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsNlOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsNlOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsNlOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsNlOptions : INestedOptions
         /// Options for the standard registration.
         /// </summary>
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsNlStandardOptions Standard { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RegistrationCountryOptionsNlOptions : INestedOptions
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsNlStandardOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsNlStandardOptions.cs
index 99204bf1a8..335de6a9d2 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsNlStandardOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsNlStandardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsNlStandardOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsNlStandardOptions : INestedOptions
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsNoOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsNoOptions.cs
index a40ea6560a..d80c666357 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsNoOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsNoOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsNoOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsNoOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsNpOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsNpOptions.cs
index 49c6055122..30b33bf965 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsNpOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsNpOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsNpOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsNpOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsNzOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsNzOptions.cs
index 3effdce2fb..7457ab624d 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsNzOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsNzOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsNzOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsNzOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsOmOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsOmOptions.cs
index cc2c665391..81f60fa11f 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsOmOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsOmOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsOmOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsOmOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsOptions.cs
index 0750f559b0..854ed04a66 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsOptions : INestedOptions
     {
@@ -9,516 +12,774 @@ public class RegistrationCountryOptionsOptions : INestedOptions
         /// Options for the registration in AE.
         /// </summary>
         [JsonProperty("ae")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ae")]
+#endif
         public RegistrationCountryOptionsAeOptions Ae { get; set; }
 
         /// <summary>
         /// Options for the registration in AL.
         /// </summary>
         [JsonProperty("al")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("al")]
+#endif
         public RegistrationCountryOptionsAlOptions Al { get; set; }
 
         /// <summary>
         /// Options for the registration in AM.
         /// </summary>
         [JsonProperty("am")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("am")]
+#endif
         public RegistrationCountryOptionsAmOptions Am { get; set; }
 
         /// <summary>
         /// Options for the registration in AO.
         /// </summary>
         [JsonProperty("ao")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ao")]
+#endif
         public RegistrationCountryOptionsAoOptions Ao { get; set; }
 
         /// <summary>
         /// Options for the registration in AT.
         /// </summary>
         [JsonProperty("at")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("at")]
+#endif
         public RegistrationCountryOptionsAtOptions At { get; set; }
 
         /// <summary>
         /// Options for the registration in AU.
         /// </summary>
         [JsonProperty("au")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("au")]
+#endif
         public RegistrationCountryOptionsAuOptions Au { get; set; }
 
         /// <summary>
         /// Options for the registration in BA.
         /// </summary>
         [JsonProperty("ba")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ba")]
+#endif
         public RegistrationCountryOptionsBaOptions Ba { get; set; }
 
         /// <summary>
         /// Options for the registration in BB.
         /// </summary>
         [JsonProperty("bb")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bb")]
+#endif
         public RegistrationCountryOptionsBbOptions Bb { get; set; }
 
         /// <summary>
         /// Options for the registration in BE.
         /// </summary>
         [JsonProperty("be")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("be")]
+#endif
         public RegistrationCountryOptionsBeOptions Be { get; set; }
 
         /// <summary>
         /// Options for the registration in BG.
         /// </summary>
         [JsonProperty("bg")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bg")]
+#endif
         public RegistrationCountryOptionsBgOptions Bg { get; set; }
 
         /// <summary>
         /// Options for the registration in BH.
         /// </summary>
         [JsonProperty("bh")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bh")]
+#endif
         public RegistrationCountryOptionsBhOptions Bh { get; set; }
 
         /// <summary>
         /// Options for the registration in BS.
         /// </summary>
         [JsonProperty("bs")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bs")]
+#endif
         public RegistrationCountryOptionsBsOptions Bs { get; set; }
 
         /// <summary>
         /// Options for the registration in BY.
         /// </summary>
         [JsonProperty("by")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("by")]
+#endif
         public RegistrationCountryOptionsByOptions By { get; set; }
 
         /// <summary>
         /// Options for the registration in CA.
         /// </summary>
         [JsonProperty("ca")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ca")]
+#endif
         public RegistrationCountryOptionsCaOptions Ca { get; set; }
 
         /// <summary>
         /// Options for the registration in CD.
         /// </summary>
         [JsonProperty("cd")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cd")]
+#endif
         public RegistrationCountryOptionsCdOptions Cd { get; set; }
 
         /// <summary>
         /// Options for the registration in CH.
         /// </summary>
         [JsonProperty("ch")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ch")]
+#endif
         public RegistrationCountryOptionsChOptions Ch { get; set; }
 
         /// <summary>
         /// Options for the registration in CL.
         /// </summary>
         [JsonProperty("cl")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cl")]
+#endif
         public RegistrationCountryOptionsClOptions Cl { get; set; }
 
         /// <summary>
         /// Options for the registration in CO.
         /// </summary>
         [JsonProperty("co")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("co")]
+#endif
         public RegistrationCountryOptionsCoOptions Co { get; set; }
 
         /// <summary>
         /// Options for the registration in CR.
         /// </summary>
         [JsonProperty("cr")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cr")]
+#endif
         public RegistrationCountryOptionsCrOptions Cr { get; set; }
 
         /// <summary>
         /// Options for the registration in CY.
         /// </summary>
         [JsonProperty("cy")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cy")]
+#endif
         public RegistrationCountryOptionsCyOptions Cy { get; set; }
 
         /// <summary>
         /// Options for the registration in CZ.
         /// </summary>
         [JsonProperty("cz")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cz")]
+#endif
         public RegistrationCountryOptionsCzOptions Cz { get; set; }
 
         /// <summary>
         /// Options for the registration in DE.
         /// </summary>
         [JsonProperty("de")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("de")]
+#endif
         public RegistrationCountryOptionsDeOptions De { get; set; }
 
         /// <summary>
         /// Options for the registration in DK.
         /// </summary>
         [JsonProperty("dk")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dk")]
+#endif
         public RegistrationCountryOptionsDkOptions Dk { get; set; }
 
         /// <summary>
         /// Options for the registration in EC.
         /// </summary>
         [JsonProperty("ec")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ec")]
+#endif
         public RegistrationCountryOptionsEcOptions Ec { get; set; }
 
         /// <summary>
         /// Options for the registration in EE.
         /// </summary>
         [JsonProperty("ee")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ee")]
+#endif
         public RegistrationCountryOptionsEeOptions Ee { get; set; }
 
         /// <summary>
         /// Options for the registration in EG.
         /// </summary>
         [JsonProperty("eg")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eg")]
+#endif
         public RegistrationCountryOptionsEgOptions Eg { get; set; }
 
         /// <summary>
         /// Options for the registration in ES.
         /// </summary>
         [JsonProperty("es")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("es")]
+#endif
         public RegistrationCountryOptionsEsOptions Es { get; set; }
 
         /// <summary>
         /// Options for the registration in FI.
         /// </summary>
         [JsonProperty("fi")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fi")]
+#endif
         public RegistrationCountryOptionsFiOptions Fi { get; set; }
 
         /// <summary>
         /// Options for the registration in FR.
         /// </summary>
         [JsonProperty("fr")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fr")]
+#endif
         public RegistrationCountryOptionsFrOptions Fr { get; set; }
 
         /// <summary>
         /// Options for the registration in GB.
         /// </summary>
         [JsonProperty("gb")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gb")]
+#endif
         public RegistrationCountryOptionsGbOptions Gb { get; set; }
 
         /// <summary>
         /// Options for the registration in GE.
         /// </summary>
         [JsonProperty("ge")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ge")]
+#endif
         public RegistrationCountryOptionsGeOptions Ge { get; set; }
 
         /// <summary>
         /// Options for the registration in GN.
         /// </summary>
         [JsonProperty("gn")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gn")]
+#endif
         public RegistrationCountryOptionsGnOptions Gn { get; set; }
 
         /// <summary>
         /// Options for the registration in GR.
         /// </summary>
         [JsonProperty("gr")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gr")]
+#endif
         public RegistrationCountryOptionsGrOptions Gr { get; set; }
 
         /// <summary>
         /// Options for the registration in HR.
         /// </summary>
         [JsonProperty("hr")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hr")]
+#endif
         public RegistrationCountryOptionsHrOptions Hr { get; set; }
 
         /// <summary>
         /// Options for the registration in HU.
         /// </summary>
         [JsonProperty("hu")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hu")]
+#endif
         public RegistrationCountryOptionsHuOptions Hu { get; set; }
 
         /// <summary>
         /// Options for the registration in ID.
         /// </summary>
         [JsonProperty("id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id")]
+#endif
         public RegistrationCountryOptionsIdOptions Id { get; set; }
 
         /// <summary>
         /// Options for the registration in IE.
         /// </summary>
         [JsonProperty("ie")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ie")]
+#endif
         public RegistrationCountryOptionsIeOptions Ie { get; set; }
 
         /// <summary>
         /// Options for the registration in IS.
         /// </summary>
         [JsonProperty("is")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("is")]
+#endif
         public RegistrationCountryOptionsIsOptions Is { get; set; }
 
         /// <summary>
         /// Options for the registration in IT.
         /// </summary>
         [JsonProperty("it")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("it")]
+#endif
         public RegistrationCountryOptionsItOptions It { get; set; }
 
         /// <summary>
         /// Options for the registration in JP.
         /// </summary>
         [JsonProperty("jp")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("jp")]
+#endif
         public RegistrationCountryOptionsJpOptions Jp { get; set; }
 
         /// <summary>
         /// Options for the registration in KE.
         /// </summary>
         [JsonProperty("ke")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ke")]
+#endif
         public RegistrationCountryOptionsKeOptions Ke { get; set; }
 
         /// <summary>
         /// Options for the registration in KH.
         /// </summary>
         [JsonProperty("kh")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kh")]
+#endif
         public RegistrationCountryOptionsKhOptions Kh { get; set; }
 
         /// <summary>
         /// Options for the registration in KR.
         /// </summary>
         [JsonProperty("kr")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kr")]
+#endif
         public RegistrationCountryOptionsKrOptions Kr { get; set; }
 
         /// <summary>
         /// Options for the registration in KZ.
         /// </summary>
         [JsonProperty("kz")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kz")]
+#endif
         public RegistrationCountryOptionsKzOptions Kz { get; set; }
 
         /// <summary>
         /// Options for the registration in LT.
         /// </summary>
         [JsonProperty("lt")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lt")]
+#endif
         public RegistrationCountryOptionsLtOptions Lt { get; set; }
 
         /// <summary>
         /// Options for the registration in LU.
         /// </summary>
         [JsonProperty("lu")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lu")]
+#endif
         public RegistrationCountryOptionsLuOptions Lu { get; set; }
 
         /// <summary>
         /// Options for the registration in LV.
         /// </summary>
         [JsonProperty("lv")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lv")]
+#endif
         public RegistrationCountryOptionsLvOptions Lv { get; set; }
 
         /// <summary>
         /// Options for the registration in MA.
         /// </summary>
         [JsonProperty("ma")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ma")]
+#endif
         public RegistrationCountryOptionsMaOptions Ma { get; set; }
 
         /// <summary>
         /// Options for the registration in MD.
         /// </summary>
         [JsonProperty("md")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("md")]
+#endif
         public RegistrationCountryOptionsMdOptions Md { get; set; }
 
         /// <summary>
         /// Options for the registration in ME.
         /// </summary>
         [JsonProperty("me")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("me")]
+#endif
         public RegistrationCountryOptionsMeOptions Me { get; set; }
 
         /// <summary>
         /// Options for the registration in MK.
         /// </summary>
         [JsonProperty("mk")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mk")]
+#endif
         public RegistrationCountryOptionsMkOptions Mk { get; set; }
 
         /// <summary>
         /// Options for the registration in MR.
         /// </summary>
         [JsonProperty("mr")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mr")]
+#endif
         public RegistrationCountryOptionsMrOptions Mr { get; set; }
 
         /// <summary>
         /// Options for the registration in MT.
         /// </summary>
         [JsonProperty("mt")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mt")]
+#endif
         public RegistrationCountryOptionsMtOptions Mt { get; set; }
 
         /// <summary>
         /// Options for the registration in MX.
         /// </summary>
         [JsonProperty("mx")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mx")]
+#endif
         public RegistrationCountryOptionsMxOptions Mx { get; set; }
 
         /// <summary>
         /// Options for the registration in MY.
         /// </summary>
         [JsonProperty("my")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("my")]
+#endif
         public RegistrationCountryOptionsMyOptions My { get; set; }
 
         /// <summary>
         /// Options for the registration in NG.
         /// </summary>
         [JsonProperty("ng")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ng")]
+#endif
         public RegistrationCountryOptionsNgOptions Ng { get; set; }
 
         /// <summary>
         /// Options for the registration in NL.
         /// </summary>
         [JsonProperty("nl")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("nl")]
+#endif
         public RegistrationCountryOptionsNlOptions Nl { get; set; }
 
         /// <summary>
         /// Options for the registration in NO.
         /// </summary>
         [JsonProperty("no")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("no")]
+#endif
         public RegistrationCountryOptionsNoOptions No { get; set; }
 
         /// <summary>
         /// Options for the registration in NP.
         /// </summary>
         [JsonProperty("np")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("np")]
+#endif
         public RegistrationCountryOptionsNpOptions Np { get; set; }
 
         /// <summary>
         /// Options for the registration in NZ.
         /// </summary>
         [JsonProperty("nz")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("nz")]
+#endif
         public RegistrationCountryOptionsNzOptions Nz { get; set; }
 
         /// <summary>
         /// Options for the registration in OM.
         /// </summary>
         [JsonProperty("om")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("om")]
+#endif
         public RegistrationCountryOptionsOmOptions Om { get; set; }
 
         /// <summary>
         /// Options for the registration in PE.
         /// </summary>
         [JsonProperty("pe")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pe")]
+#endif
         public RegistrationCountryOptionsPeOptions Pe { get; set; }
 
         /// <summary>
         /// Options for the registration in PL.
         /// </summary>
         [JsonProperty("pl")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pl")]
+#endif
         public RegistrationCountryOptionsPlOptions Pl { get; set; }
 
         /// <summary>
         /// Options for the registration in PT.
         /// </summary>
         [JsonProperty("pt")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pt")]
+#endif
         public RegistrationCountryOptionsPtOptions Pt { get; set; }
 
         /// <summary>
         /// Options for the registration in RO.
         /// </summary>
         [JsonProperty("ro")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ro")]
+#endif
         public RegistrationCountryOptionsRoOptions Ro { get; set; }
 
         /// <summary>
         /// Options for the registration in RS.
         /// </summary>
         [JsonProperty("rs")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("rs")]
+#endif
         public RegistrationCountryOptionsRsOptions Rs { get; set; }
 
         /// <summary>
         /// Options for the registration in RU.
         /// </summary>
         [JsonProperty("ru")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ru")]
+#endif
         public RegistrationCountryOptionsRuOptions Ru { get; set; }
 
         /// <summary>
         /// Options for the registration in SA.
         /// </summary>
         [JsonProperty("sa")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sa")]
+#endif
         public RegistrationCountryOptionsSaOptions Sa { get; set; }
 
         /// <summary>
         /// Options for the registration in SE.
         /// </summary>
         [JsonProperty("se")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("se")]
+#endif
         public RegistrationCountryOptionsSeOptions Se { get; set; }
 
         /// <summary>
         /// Options for the registration in SG.
         /// </summary>
         [JsonProperty("sg")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sg")]
+#endif
         public RegistrationCountryOptionsSgOptions Sg { get; set; }
 
         /// <summary>
         /// Options for the registration in SI.
         /// </summary>
         [JsonProperty("si")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("si")]
+#endif
         public RegistrationCountryOptionsSiOptions Si { get; set; }
 
         /// <summary>
         /// Options for the registration in SK.
         /// </summary>
         [JsonProperty("sk")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sk")]
+#endif
         public RegistrationCountryOptionsSkOptions Sk { get; set; }
 
         /// <summary>
         /// Options for the registration in SN.
         /// </summary>
         [JsonProperty("sn")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sn")]
+#endif
         public RegistrationCountryOptionsSnOptions Sn { get; set; }
 
         /// <summary>
         /// Options for the registration in SR.
         /// </summary>
         [JsonProperty("sr")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sr")]
+#endif
         public RegistrationCountryOptionsSrOptions Sr { get; set; }
 
         /// <summary>
         /// Options for the registration in TH.
         /// </summary>
         [JsonProperty("th")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("th")]
+#endif
         public RegistrationCountryOptionsThOptions Th { get; set; }
 
         /// <summary>
         /// Options for the registration in TJ.
         /// </summary>
         [JsonProperty("tj")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tj")]
+#endif
         public RegistrationCountryOptionsTjOptions Tj { get; set; }
 
         /// <summary>
         /// Options for the registration in TR.
         /// </summary>
         [JsonProperty("tr")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tr")]
+#endif
         public RegistrationCountryOptionsTrOptions Tr { get; set; }
 
         /// <summary>
         /// Options for the registration in TZ.
         /// </summary>
         [JsonProperty("tz")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tz")]
+#endif
         public RegistrationCountryOptionsTzOptions Tz { get; set; }
 
         /// <summary>
         /// Options for the registration in UG.
         /// </summary>
         [JsonProperty("ug")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ug")]
+#endif
         public RegistrationCountryOptionsUgOptions Ug { get; set; }
 
         /// <summary>
         /// Options for the registration in US.
         /// </summary>
         [JsonProperty("us")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us")]
+#endif
         public RegistrationCountryOptionsUsOptions Us { get; set; }
 
         /// <summary>
         /// Options for the registration in UY.
         /// </summary>
         [JsonProperty("uy")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("uy")]
+#endif
         public RegistrationCountryOptionsUyOptions Uy { get; set; }
 
         /// <summary>
         /// Options for the registration in UZ.
         /// </summary>
         [JsonProperty("uz")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("uz")]
+#endif
         public RegistrationCountryOptionsUzOptions Uz { get; set; }
 
         /// <summary>
         /// Options for the registration in VN.
         /// </summary>
         [JsonProperty("vn")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("vn")]
+#endif
         public RegistrationCountryOptionsVnOptions Vn { get; set; }
 
         /// <summary>
         /// Options for the registration in ZA.
         /// </summary>
         [JsonProperty("za")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("za")]
+#endif
         public RegistrationCountryOptionsZaOptions Za { get; set; }
 
         /// <summary>
         /// Options for the registration in ZM.
         /// </summary>
         [JsonProperty("zm")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("zm")]
+#endif
         public RegistrationCountryOptionsZmOptions Zm { get; set; }
 
         /// <summary>
         /// Options for the registration in ZW.
         /// </summary>
         [JsonProperty("zw")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("zw")]
+#endif
         public RegistrationCountryOptionsZwOptions Zw { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsPeOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsPeOptions.cs
index 1527e097ba..be139b2508 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsPeOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsPeOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsPeOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsPeOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsPlOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsPlOptions.cs
index 6799ca9690..b99064cc64 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsPlOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsPlOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsPlOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsPlOptions : INestedOptions
         /// Options for the standard registration.
         /// </summary>
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsPlStandardOptions Standard { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RegistrationCountryOptionsPlOptions : INestedOptions
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsPlStandardOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsPlStandardOptions.cs
index 2154656842..df1220d5ed 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsPlStandardOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsPlStandardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsPlStandardOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsPlStandardOptions : INestedOptions
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsPtOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsPtOptions.cs
index 7f8974f615..938464720c 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsPtOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsPtOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsPtOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsPtOptions : INestedOptions
         /// Options for the standard registration.
         /// </summary>
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsPtStandardOptions Standard { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RegistrationCountryOptionsPtOptions : INestedOptions
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsPtStandardOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsPtStandardOptions.cs
index 986253a745..b1ff11743b 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsPtStandardOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsPtStandardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsPtStandardOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsPtStandardOptions : INestedOptions
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsRoOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsRoOptions.cs
index b4dbd85829..673d334b8b 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsRoOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsRoOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsRoOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsRoOptions : INestedOptions
         /// Options for the standard registration.
         /// </summary>
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsRoStandardOptions Standard { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RegistrationCountryOptionsRoOptions : INestedOptions
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsRoStandardOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsRoStandardOptions.cs
index 8f67b2daf5..84899465bd 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsRoStandardOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsRoStandardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsRoStandardOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsRoStandardOptions : INestedOptions
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsRsOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsRsOptions.cs
index c716a8c31c..1e6b768249 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsRsOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsRsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsRsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsRsOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsRuOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsRuOptions.cs
index 651eb7ae48..083910b3d3 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsRuOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsRuOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsRuOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsRuOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSaOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSaOptions.cs
index 8d09c741b1..6e5d42e517 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSaOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSaOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsSaOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsSaOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSeOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSeOptions.cs
index 7989f4b1ce..a4326c928e 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSeOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSeOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsSeOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsSeOptions : INestedOptions
         /// Options for the standard registration.
         /// </summary>
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsSeStandardOptions Standard { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RegistrationCountryOptionsSeOptions : INestedOptions
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSeStandardOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSeStandardOptions.cs
index 22b44213bb..7b1ab4b9a9 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSeStandardOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSeStandardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsSeStandardOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsSeStandardOptions : INestedOptions
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSgOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSgOptions.cs
index 53fb172980..b8d1b52938 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSgOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSgOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsSgOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsSgOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSiOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSiOptions.cs
index 4a2e057d68..086a3a1c56 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSiOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSiOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsSiOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsSiOptions : INestedOptions
         /// Options for the standard registration.
         /// </summary>
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsSiStandardOptions Standard { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RegistrationCountryOptionsSiOptions : INestedOptions
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSiStandardOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSiStandardOptions.cs
index cb6682d469..4f83c82914 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSiStandardOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSiStandardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsSiStandardOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsSiStandardOptions : INestedOptions
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSkOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSkOptions.cs
index d2ec7d71f7..497cb427c1 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSkOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSkOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsSkOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsSkOptions : INestedOptions
         /// Options for the standard registration.
         /// </summary>
         [JsonProperty("standard")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("standard")]
+#endif
         public RegistrationCountryOptionsSkStandardOptions Standard { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class RegistrationCountryOptionsSkOptions : INestedOptions
         /// One of: <c>ioss</c>, <c>oss_non_union</c>, <c>oss_union</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSkStandardOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSkStandardOptions.cs
index bcb8c6c188..30c70ced3a 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSkStandardOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSkStandardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsSkStandardOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsSkStandardOptions : INestedOptions
         /// One of: <c>small_seller</c>, or <c>standard</c>.
         /// </summary>
         [JsonProperty("place_of_supply_scheme")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("place_of_supply_scheme")]
+#endif
         public string PlaceOfSupplyScheme { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSnOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSnOptions.cs
index e2d8c73a89..5e56db8edf 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSnOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSnOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsSnOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsSnOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSrOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSrOptions.cs
index dcb64e4540..717fd1c9c4 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSrOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsSrOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsSrOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsSrOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsThOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsThOptions.cs
index c7e9745ca7..7dbbf2bd68 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsThOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsThOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsThOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsThOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsTjOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsTjOptions.cs
index 5bcef43ca2..6a8b98cd9a 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsTjOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsTjOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsTjOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsTjOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsTrOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsTrOptions.cs
index e54f563d13..ce877cd0fb 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsTrOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsTrOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsTrOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsTrOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsTzOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsTzOptions.cs
index 496e28d2f8..ac30a5436e 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsTzOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsTzOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsTzOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsTzOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUgOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUgOptions.cs
index 2e863325e6..5dd46a6c93 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUgOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUgOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsUgOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsUgOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUsLocalAmusementTaxOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUsLocalAmusementTaxOptions.cs
index 2baf30e47e..b1b187d02d 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUsLocalAmusementTaxOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUsLocalAmusementTaxOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsUsLocalAmusementTaxOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class RegistrationCountryOptionsUsLocalAmusementTaxOptions : INestedOptio
         /// <c>68081</c> (Schiller Park).
         /// </summary>
         [JsonProperty("jurisdiction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("jurisdiction")]
+#endif
         public string Jurisdiction { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUsLocalLeaseTaxOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUsLocalLeaseTaxOptions.cs
index 5759e3bee4..9ac6a9b0d7 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUsLocalLeaseTaxOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUsLocalLeaseTaxOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsUsLocalLeaseTaxOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsUsLocalLeaseTaxOptions : INestedOptions
         /// representing the local jurisdiction. Supported FIPS codes are: <c>14000</c> (Chicago).
         /// </summary>
         [JsonProperty("jurisdiction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("jurisdiction")]
+#endif
         public string Jurisdiction { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUsOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUsOptions.cs
index 2378889a71..517b961123 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUsOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsUsOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class RegistrationCountryOptionsUsOptions : INestedOptions
         /// Options for the local amusement tax registration.
         /// </summary>
         [JsonProperty("local_amusement_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("local_amusement_tax")]
+#endif
         public RegistrationCountryOptionsUsLocalAmusementTaxOptions LocalAmusementTax { get; set; }
 
         /// <summary>
         /// Options for the local lease tax registration.
         /// </summary>
         [JsonProperty("local_lease_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("local_lease_tax")]
+#endif
         public RegistrationCountryOptionsUsLocalLeaseTaxOptions LocalLeaseTax { get; set; }
 
         /// <summary>
@@ -22,12 +31,18 @@ public class RegistrationCountryOptionsUsOptions : INestedOptions
         /// 3166-2</a>).
         /// </summary>
         [JsonProperty("state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("state")]
+#endif
         public string State { get; set; }
 
         /// <summary>
         /// Options for the state sales tax registration.
         /// </summary>
         [JsonProperty("state_sales_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("state_sales_tax")]
+#endif
         public RegistrationCountryOptionsUsStateSalesTaxOptions StateSalesTax { get; set; }
 
         /// <summary>
@@ -37,6 +52,9 @@ public class RegistrationCountryOptionsUsOptions : INestedOptions
         /// <c>state_sales_tax</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUsStateSalesTaxElectionOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUsStateSalesTaxElectionOptions.cs
index 910195851c..40a318c915 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUsStateSalesTaxElectionOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUsStateSalesTaxElectionOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsUsStateSalesTaxElectionOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class RegistrationCountryOptionsUsStateSalesTaxElectionOptions : INestedO
         /// County) and <c>60000</c> (Philadelphia City).
         /// </summary>
         [JsonProperty("jurisdiction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("jurisdiction")]
+#endif
         public string Jurisdiction { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class RegistrationCountryOptionsUsStateSalesTaxElectionOptions : INestedO
         /// <c>single_local_use_tax</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUsStateSalesTaxOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUsStateSalesTaxOptions.cs
index caf0657eb1..ed4c9e4972 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUsStateSalesTaxOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUsStateSalesTaxOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Tax
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsUsStateSalesTaxOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationCountryOptionsUsStateSalesTaxOptions : INestedOptions
         /// Elections for the state sales tax registration.
         /// </summary>
         [JsonProperty("elections")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("elections")]
+#endif
         public List<RegistrationCountryOptionsUsStateSalesTaxElectionOptions> Elections { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUyOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUyOptions.cs
index 89ca2805b5..99185dcbd7 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUyOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUyOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsUyOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsUyOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUzOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUzOptions.cs
index 5cc851194a..66ae7b7f66 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUzOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsUzOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsUzOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsUzOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsVnOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsVnOptions.cs
index 2647b68b77..dc116c4ada 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsVnOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsVnOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsVnOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsVnOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsZaOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsZaOptions.cs
index 6a2913b801..63235f6414 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsZaOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsZaOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsZaOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsZaOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsZmOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsZmOptions.cs
index 0233cad1bf..07d0d3403b 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsZmOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsZmOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsZmOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsZmOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsZwOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsZwOptions.cs
index 6ec2c32048..6a31197916 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsZwOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCountryOptionsZwOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCountryOptionsZwOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class RegistrationCountryOptionsZwOptions : INestedOptions
         /// Type of registration to be created in <c>country</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationCreateOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationCreateOptions.cs
index 14cf2cc67a..4a8435af28 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationCreateOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationCreateOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe.Tax
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationCreateOptions : BaseOptions
     {
@@ -14,6 +17,10 @@ public class RegistrationCreateOptions : BaseOptions
         /// </summary>
         [JsonProperty("active_from")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active_from")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, RegistrationActiveFrom> ActiveFrom { get; set; }
 
         /// <summary>
@@ -21,12 +28,18 @@ public class RegistrationCreateOptions : BaseOptions
         /// 3166-1 alpha-2</a>).
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
         /// Specific options for a registration in the specified <c>country</c>.
         /// </summary>
         [JsonProperty("country_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country_options")]
+#endif
         public RegistrationCountryOptionsOptions CountryOptions { get; set; }
 
         /// <summary>
@@ -36,6 +49,10 @@ public class RegistrationCreateOptions : BaseOptions
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? ExpiresAt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationListOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationListOptions.cs
index f7d8b7375c..acf4a2c9cc 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationListOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationListOptions : ListOptions
     {
@@ -10,6 +13,9 @@ public class RegistrationListOptions : ListOptions
         /// One of: <c>active</c>, <c>all</c>, <c>expired</c>, or <c>scheduled</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationService.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationService.cs
index 66a1954642..05b81fd3aa 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationService.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Tax
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class RegistrationService : Service<Registration>,
+    public class RegistrationService : Service,
         ICreatable<Registration, RegistrationCreateOptions>,
         IListable<Registration, RegistrationListOptions>,
         IRetrievable<Registration, RegistrationGetOptions>,
diff --git a/src/Stripe.net/Services/Tax/Registrations/RegistrationUpdateOptions.cs b/src/Stripe.net/Services/Tax/Registrations/RegistrationUpdateOptions.cs
index a96e08418a..9495965654 100644
--- a/src/Stripe.net/Services/Tax/Registrations/RegistrationUpdateOptions.cs
+++ b/src/Stripe.net/Services/Tax/Registrations/RegistrationUpdateOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe.Tax
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class RegistrationUpdateOptions : BaseOptions
     {
@@ -13,6 +16,10 @@ public class RegistrationUpdateOptions : BaseOptions
         /// </summary>
         [JsonProperty("active_from")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active_from")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, RegistrationActiveFrom> ActiveFrom { get; set; }
 
         /// <summary>
@@ -22,6 +29,10 @@ public class RegistrationUpdateOptions : BaseOptions
         /// </summary>
         [JsonProperty("expires_at")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expires_at")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, RegistrationExpiresAt> ExpiresAt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Settings/SettingsDefaultsOptions.cs b/src/Stripe.net/Services/Tax/Settings/SettingsDefaultsOptions.cs
index 75d7d5bb00..cdf68a0ea6 100644
--- a/src/Stripe.net/Services/Tax/Settings/SettingsDefaultsOptions.cs
+++ b/src/Stripe.net/Services/Tax/Settings/SettingsDefaultsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SettingsDefaultsOptions : INestedOptions
     {
@@ -14,12 +17,18 @@ public class SettingsDefaultsOptions : INestedOptions
         /// One of: <c>exclusive</c>, <c>inclusive</c>, or <c>inferred_by_currency</c>.
         /// </summary>
         [JsonProperty("tax_behavior")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_behavior")]
+#endif
         public string TaxBehavior { get; set; }
 
         /// <summary>
         /// A <a href="https://stripe.com/docs/tax/tax-categories">tax code</a> ID.
         /// </summary>
         [JsonProperty("tax_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_code")]
+#endif
         public string TaxCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Settings/SettingsHeadOfficeOptions.cs b/src/Stripe.net/Services/Tax/Settings/SettingsHeadOfficeOptions.cs
index ee89755f85..abe99f650b 100644
--- a/src/Stripe.net/Services/Tax/Settings/SettingsHeadOfficeOptions.cs
+++ b/src/Stripe.net/Services/Tax/Settings/SettingsHeadOfficeOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SettingsHeadOfficeOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class SettingsHeadOfficeOptions : INestedOptions
         /// The location of the business for tax purposes.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public AddressOptions Address { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Settings/SettingsService.cs b/src/Stripe.net/Services/Tax/Settings/SettingsService.cs
index 60dc228b4d..9c834f8fa7 100644
--- a/src/Stripe.net/Services/Tax/Settings/SettingsService.cs
+++ b/src/Stripe.net/Services/Tax/Settings/SettingsService.cs
@@ -6,8 +6,7 @@ namespace Stripe.Tax
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class SettingsService : Service<Settings>,
-        ISingletonRetrievable<Settings>
+    public class SettingsService : Service, ISingletonRetrievable<Settings>
     {
         public SettingsService()
         {
diff --git a/src/Stripe.net/Services/Tax/Settings/SettingsUpdateOptions.cs b/src/Stripe.net/Services/Tax/Settings/SettingsUpdateOptions.cs
index 4f6b8896be..097196b7b5 100644
--- a/src/Stripe.net/Services/Tax/Settings/SettingsUpdateOptions.cs
+++ b/src/Stripe.net/Services/Tax/Settings/SettingsUpdateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SettingsUpdateOptions : BaseOptions
     {
@@ -9,12 +12,18 @@ public class SettingsUpdateOptions : BaseOptions
         /// Default configuration to be used on Stripe Tax calculations.
         /// </summary>
         [JsonProperty("defaults")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("defaults")]
+#endif
         public SettingsDefaultsOptions Defaults { get; set; }
 
         /// <summary>
         /// The place where your business is located.
         /// </summary>
         [JsonProperty("head_office")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("head_office")]
+#endif
         public SettingsHeadOfficeOptions HeadOffice { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/TransactionLineItems/TransactionLineItemService.cs b/src/Stripe.net/Services/Tax/TransactionLineItems/TransactionLineItemService.cs
index 2cf0bcdd7f..7c7314768e 100644
--- a/src/Stripe.net/Services/Tax/TransactionLineItems/TransactionLineItemService.cs
+++ b/src/Stripe.net/Services/Tax/TransactionLineItems/TransactionLineItemService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Tax
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class TransactionLineItemService : ServiceNested<TransactionLineItem>,
+    public class TransactionLineItemService : Service,
         INestedListable<TransactionLineItem, TransactionLineItemListOptions>
     {
         public TransactionLineItemService()
diff --git a/src/Stripe.net/Services/Tax/Transactions/TransactionCreateFromCalculationOptions.cs b/src/Stripe.net/Services/Tax/Transactions/TransactionCreateFromCalculationOptions.cs
index 37ed7ff4b8..b1d83fe304 100644
--- a/src/Stripe.net/Services/Tax/Transactions/TransactionCreateFromCalculationOptions.cs
+++ b/src/Stripe.net/Services/Tax/Transactions/TransactionCreateFromCalculationOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe.Tax
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionCreateFromCalculationOptions : BaseOptions, IHasMetadata
     {
@@ -12,6 +15,9 @@ public class TransactionCreateFromCalculationOptions : BaseOptions, IHasMetadata
         /// Tax Calculation ID to be used as input when creating the transaction.
         /// </summary>
         [JsonProperty("calculation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("calculation")]
+#endif
         public string Calculation { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class TransactionCreateFromCalculationOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -31,6 +40,10 @@ public class TransactionCreateFromCalculationOptions : BaseOptions, IHasMetadata
         /// </summary>
         [JsonProperty("posted_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("posted_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? PostedAt { get; set; }
 
         /// <summary>
@@ -38,6 +51,9 @@ public class TransactionCreateFromCalculationOptions : BaseOptions, IHasMetadata
         /// transactions, including reversals.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Transactions/TransactionCreateReversalOptions.cs b/src/Stripe.net/Services/Tax/Transactions/TransactionCreateReversalOptions.cs
index 22ac6db3cd..46bcb1776f 100644
--- a/src/Stripe.net/Services/Tax/Transactions/TransactionCreateReversalOptions.cs
+++ b/src/Stripe.net/Services/Tax/Transactions/TransactionCreateReversalOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Tax
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionCreateReversalOptions : BaseOptions, IHasMetadata
     {
@@ -13,12 +16,18 @@ public class TransactionCreateReversalOptions : BaseOptions, IHasMetadata
         /// including taxes.
         /// </summary>
         [JsonProperty("flat_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flat_amount")]
+#endif
         public long? FlatAmount { get; set; }
 
         /// <summary>
         /// The line item amounts to reverse.
         /// </summary>
         [JsonProperty("line_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line_items")]
+#endif
         public List<TransactionLineItemOptions> LineItems { get; set; }
 
         /// <summary>
@@ -28,6 +37,9 @@ public class TransactionCreateReversalOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -36,12 +48,18 @@ public class TransactionCreateReversalOptions : BaseOptions, IHasMetadata
         /// One of: <c>full</c>, or <c>partial</c>.
         /// </summary>
         [JsonProperty("mode")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mode")]
+#endif
         public string Mode { get; set; }
 
         /// <summary>
         /// The ID of the Transaction to partially or fully reverse.
         /// </summary>
         [JsonProperty("original_transaction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("original_transaction")]
+#endif
         public string OriginalTransaction { get; set; }
 
         /// <summary>
@@ -50,12 +68,18 @@ public class TransactionCreateReversalOptions : BaseOptions, IHasMetadata
         /// transaction in exported <a href="https://stripe.com/docs/tax/reports">tax reports</a>.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
 
         /// <summary>
         /// The shipping cost to reverse.
         /// </summary>
         [JsonProperty("shipping_cost")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping_cost")]
+#endif
         public TransactionShippingCostOptions ShippingCost { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Transactions/TransactionLineItemOptions.cs b/src/Stripe.net/Services/Tax/Transactions/TransactionLineItemOptions.cs
index b65ff95b1f..0ebc764f1d 100644
--- a/src/Stripe.net/Services/Tax/Transactions/TransactionLineItemOptions.cs
+++ b/src/Stripe.net/Services/Tax/Transactions/TransactionLineItemOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Tax
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionLineItemOptions : INestedOptions, IHasMetadata
     {
@@ -12,6 +15,9 @@ public class TransactionLineItemOptions : INestedOptions, IHasMetadata
         /// negative.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class TransactionLineItemOptions : INestedOptions, IHasMetadata
         /// negative.
         /// </summary>
         [JsonProperty("amount_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_tax")]
+#endif
         public long? AmountTax { get; set; }
 
         /// <summary>
@@ -28,12 +37,18 @@ public class TransactionLineItemOptions : INestedOptions, IHasMetadata
         /// object in a structured format.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The <c>id</c> of the line item to reverse in the original transaction.
         /// </summary>
         [JsonProperty("original_line_item")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("original_line_item")]
+#endif
         public string OriginalLineItem { get; set; }
 
         /// <summary>
@@ -41,12 +56,18 @@ public class TransactionLineItemOptions : INestedOptions, IHasMetadata
         /// exports</a>, but does not affect the amount of tax reversed.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
 
         /// <summary>
         /// A custom identifier for this line item in the reversal transaction, such as 'L1-refund'.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tax/Transactions/TransactionService.cs b/src/Stripe.net/Services/Tax/Transactions/TransactionService.cs
index 7d57d6a15c..317bdec156 100644
--- a/src/Stripe.net/Services/Tax/Transactions/TransactionService.cs
+++ b/src/Stripe.net/Services/Tax/Transactions/TransactionService.cs
@@ -7,7 +7,7 @@ namespace Stripe.Tax
     using System.Threading;
     using System.Threading.Tasks;
 
-    public partial class TransactionService : Service<Transaction>,
+    public partial class TransactionService : Service,
         IRetrievable<Transaction, TransactionGetOptions>
     {
         private TransactionLineItemService lineItems;
diff --git a/src/Stripe.net/Services/Tax/Transactions/TransactionShippingCostOptions.cs b/src/Stripe.net/Services/Tax/Transactions/TransactionShippingCostOptions.cs
index bab56f3849..b8216b8849 100644
--- a/src/Stripe.net/Services/Tax/Transactions/TransactionShippingCostOptions.cs
+++ b/src/Stripe.net/Services/Tax/Transactions/TransactionShippingCostOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Tax
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionShippingCostOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class TransactionShippingCostOptions : INestedOptions
         /// negative.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class TransactionShippingCostOptions : INestedOptions
         /// negative.
         /// </summary>
         [JsonProperty("amount_tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_tax")]
+#endif
         public long? AmountTax { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TaxCodes/TaxCodeService.cs b/src/Stripe.net/Services/TaxCodes/TaxCodeService.cs
index 0870c0fd17..6dbf384387 100644
--- a/src/Stripe.net/Services/TaxCodes/TaxCodeService.cs
+++ b/src/Stripe.net/Services/TaxCodes/TaxCodeService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class TaxCodeService : Service<TaxCode>,
+    public class TaxCodeService : Service,
         IListable<TaxCode, TaxCodeListOptions>,
         IRetrievable<TaxCode, TaxCodeGetOptions>
     {
diff --git a/src/Stripe.net/Services/TaxIds/TaxIdCreateOptions.cs b/src/Stripe.net/Services/TaxIds/TaxIdCreateOptions.cs
index 8acf96c87a..64b7e6b0ad 100644
--- a/src/Stripe.net/Services/TaxIds/TaxIdCreateOptions.cs
+++ b/src/Stripe.net/Services/TaxIds/TaxIdCreateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TaxIdCreateOptions : BaseOptions
     {
@@ -9,6 +12,9 @@ public class TaxIdCreateOptions : BaseOptions
         /// The account or customer the tax ID belongs to. Defaults to <c>owner[type]=self</c>.
         /// </summary>
         [JsonProperty("owner")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("owner")]
+#endif
         public TaxIdOwnerOptions Owner { get; set; }
 
         /// <summary>
@@ -54,12 +60,18 @@ public class TaxIdCreateOptions : BaseOptions
         /// <c>vn_tin</c>, <c>za_vat</c>, <c>zm_tin</c>, or <c>zw_tin</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
         /// Value of the tax ID.
         /// </summary>
         [JsonProperty("value")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("value")]
+#endif
         public string Value { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TaxIds/TaxIdListOptions.cs b/src/Stripe.net/Services/TaxIds/TaxIdListOptions.cs
index 310f073e2e..d6387631a8 100644
--- a/src/Stripe.net/Services/TaxIds/TaxIdListOptions.cs
+++ b/src/Stripe.net/Services/TaxIds/TaxIdListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TaxIdListOptions : ListOptions
     {
@@ -9,6 +12,9 @@ public class TaxIdListOptions : ListOptions
         /// The account or customer the tax ID belongs to. Defaults to <c>owner[type]=self</c>.
         /// </summary>
         [JsonProperty("owner")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("owner")]
+#endif
         public TaxIdOwnerOptions Owner { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TaxIds/TaxIdOwnerOptions.cs b/src/Stripe.net/Services/TaxIds/TaxIdOwnerOptions.cs
index 07533ba3fb..e343437a6c 100644
--- a/src/Stripe.net/Services/TaxIds/TaxIdOwnerOptions.cs
+++ b/src/Stripe.net/Services/TaxIds/TaxIdOwnerOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TaxIdOwnerOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class TaxIdOwnerOptions : INestedOptions
         /// Account the tax ID belongs to. Required when <c>type=account</c>.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public string Account { get; set; }
 
         /// <summary>
         /// Customer the tax ID belongs to. Required when <c>type=customer</c>.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
@@ -22,6 +31,9 @@ public class TaxIdOwnerOptions : INestedOptions
         /// One of: <c>account</c>, <c>application</c>, <c>customer</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TaxIds/TaxIdService.cs b/src/Stripe.net/Services/TaxIds/TaxIdService.cs
index da05c93821..32ac6a973f 100644
--- a/src/Stripe.net/Services/TaxIds/TaxIdService.cs
+++ b/src/Stripe.net/Services/TaxIds/TaxIdService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public partial class TaxIdService : Service<TaxId>,
+    public partial class TaxIdService : Service,
         ICreatable<TaxId, TaxIdCreateOptions>,
         IDeletable<TaxId, TaxIdDeleteOptions>,
         IListable<TaxId, TaxIdListOptions>,
diff --git a/src/Stripe.net/Services/TaxRates/TaxRateCreateOptions.cs b/src/Stripe.net/Services/TaxRates/TaxRateCreateOptions.cs
index ada4295fc7..b221bd111c 100644
--- a/src/Stripe.net/Services/TaxRates/TaxRateCreateOptions.cs
+++ b/src/Stripe.net/Services/TaxRates/TaxRateCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TaxRateCreateOptions : BaseOptions, IHasMetadata
     {
@@ -12,6 +15,9 @@ public class TaxRateCreateOptions : BaseOptions, IHasMetadata
         /// subscriptions and invoices that already have it set.
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool? Active { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class TaxRateCreateOptions : BaseOptions, IHasMetadata
         /// 3166-1 alpha-2</a>).
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -26,18 +35,27 @@ public class TaxRateCreateOptions : BaseOptions, IHasMetadata
         /// visible to your customers.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// The display name of the tax rate, which will be shown to users.
         /// </summary>
         [JsonProperty("display_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_name")]
+#endif
         public string DisplayName { get; set; }
 
         /// <summary>
         /// This specifies if the tax rate is inclusive or exclusive.
         /// </summary>
         [JsonProperty("inclusive")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("inclusive")]
+#endif
         public bool? Inclusive { get; set; }
 
         /// <summary>
@@ -45,6 +63,9 @@ public class TaxRateCreateOptions : BaseOptions, IHasMetadata
         /// purposes. It also appears on your customer’s invoice.
         /// </summary>
         [JsonProperty("jurisdiction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("jurisdiction")]
+#endif
         public string Jurisdiction { get; set; }
 
         /// <summary>
@@ -54,12 +75,18 @@ public class TaxRateCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// This represents the tax rate percent out of 100.
         /// </summary>
         [JsonProperty("percentage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentage")]
+#endif
         public decimal? Percentage { get; set; }
 
         /// <summary>
@@ -67,6 +94,9 @@ public class TaxRateCreateOptions : BaseOptions, IHasMetadata
         /// without country prefix. For example, "NY" for New York, United States.
         /// </summary>
         [JsonProperty("state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("state")]
+#endif
         public string State { get; set; }
 
         /// <summary>
@@ -77,6 +107,9 @@ public class TaxRateCreateOptions : BaseOptions, IHasMetadata
         /// <c>vat</c>.
         /// </summary>
         [JsonProperty("tax_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_type")]
+#endif
         public string TaxType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TaxRates/TaxRateListOptions.cs b/src/Stripe.net/Services/TaxRates/TaxRateListOptions.cs
index ae5af256b1..f05aa6caad 100644
--- a/src/Stripe.net/Services/TaxRates/TaxRateListOptions.cs
+++ b/src/Stripe.net/Services/TaxRates/TaxRateListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TaxRateListOptions : ListOptionsWithCreated
     {
@@ -9,6 +12,9 @@ public class TaxRateListOptions : ListOptionsWithCreated
         /// Optional flag to filter by tax rates that are either active or inactive (archived).
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool? Active { get; set; }
 
         /// <summary>
@@ -16,6 +22,9 @@ public class TaxRateListOptions : ListOptionsWithCreated
         /// inclusive).
         /// </summary>
         [JsonProperty("inclusive")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("inclusive")]
+#endif
         public bool? Inclusive { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TaxRates/TaxRatePercentageRangeOptions.cs b/src/Stripe.net/Services/TaxRates/TaxRatePercentageRangeOptions.cs
index b98892ca89..3c55eb75de 100644
--- a/src/Stripe.net/Services/TaxRates/TaxRatePercentageRangeOptions.cs
+++ b/src/Stripe.net/Services/TaxRates/TaxRatePercentageRangeOptions.cs
@@ -1,23 +1,39 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
+
     using Stripe.Infrastructure;
 
     public class TaxRatePercentageRangeOptions : INestedOptions
     {
         [JsonProperty("gt")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gt")]
+#endif
         [AllowNameMismatch]
         public decimal? GreaterThan { get; set; }
 
         [JsonProperty("gte")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gte")]
+#endif
         [AllowNameMismatch]
         public decimal? GreaterThanOrEqual { get; set; }
 
         [JsonProperty("lt")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lt")]
+#endif
         [AllowNameMismatch]
         public decimal? LessThan { get; set; }
 
         [JsonProperty("lte")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lte")]
+#endif
         [AllowNameMismatch]
         public decimal? LessThanOrEqual { get; set; }
     }
diff --git a/src/Stripe.net/Services/TaxRates/TaxRateService.cs b/src/Stripe.net/Services/TaxRates/TaxRateService.cs
index c23d455b4f..de18f8d493 100644
--- a/src/Stripe.net/Services/TaxRates/TaxRateService.cs
+++ b/src/Stripe.net/Services/TaxRates/TaxRateService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class TaxRateService : Service<TaxRate>,
+    public class TaxRateService : Service,
         ICreatable<TaxRate, TaxRateCreateOptions>,
         IListable<TaxRate, TaxRateListOptions>,
         IRetrievable<TaxRate, TaxRateGetOptions>,
diff --git a/src/Stripe.net/Services/TaxRates/TaxRateUpdateOptions.cs b/src/Stripe.net/Services/TaxRates/TaxRateUpdateOptions.cs
index ec33d20aee..604f918543 100644
--- a/src/Stripe.net/Services/TaxRates/TaxRateUpdateOptions.cs
+++ b/src/Stripe.net/Services/TaxRates/TaxRateUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TaxRateUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -12,6 +15,9 @@ public class TaxRateUpdateOptions : BaseOptions, IHasMetadata
         /// subscriptions and invoices that already have it set.
         /// </summary>
         [JsonProperty("active")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("active")]
+#endif
         public bool? Active { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class TaxRateUpdateOptions : BaseOptions, IHasMetadata
         /// 3166-1 alpha-2</a>).
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -26,12 +35,18 @@ public class TaxRateUpdateOptions : BaseOptions, IHasMetadata
         /// visible to your customers.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// The display name of the tax rate, which will be shown to users.
         /// </summary>
         [JsonProperty("display_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_name")]
+#endif
         public string DisplayName { get; set; }
 
         /// <summary>
@@ -39,6 +54,9 @@ public class TaxRateUpdateOptions : BaseOptions, IHasMetadata
         /// purposes. It also appears on your customer’s invoice.
         /// </summary>
         [JsonProperty("jurisdiction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("jurisdiction")]
+#endif
         public string Jurisdiction { get; set; }
 
         /// <summary>
@@ -48,6 +66,9 @@ public class TaxRateUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -55,6 +76,9 @@ public class TaxRateUpdateOptions : BaseOptions, IHasMetadata
         /// without country prefix. For example, "NY" for New York, United States.
         /// </summary>
         [JsonProperty("state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("state")]
+#endif
         public string State { get; set; }
 
         /// <summary>
@@ -65,6 +89,9 @@ public class TaxRateUpdateOptions : BaseOptions, IHasMetadata
         /// <c>vat</c>.
         /// </summary>
         [JsonProperty("tax_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_type")]
+#endif
         public string TaxType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationBbposWiseposEOptions.cs b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationBbposWiseposEOptions.cs
index 5fe9775325..88262a9bf4 100644
--- a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationBbposWiseposEOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationBbposWiseposEOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationBbposWiseposEOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class ConfigurationBbposWiseposEOptions : INestedOptions
         /// A File ID representing an image you would like displayed on the reader.
         /// </summary>
         [JsonProperty("splashscreen")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("splashscreen")]
+#endif
         public string Splashscreen { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationCreateOptions.cs b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationCreateOptions.cs
index 94223ab7f1..1b688d3551 100644
--- a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationCreateOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationCreateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationCreateOptions : BaseOptions
     {
@@ -9,42 +12,63 @@ public class ConfigurationCreateOptions : BaseOptions
         /// An object containing device type specific settings for BBPOS WisePOS E readers.
         /// </summary>
         [JsonProperty("bbpos_wisepos_e")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bbpos_wisepos_e")]
+#endif
         public ConfigurationBbposWiseposEOptions BbposWiseposE { get; set; }
 
         /// <summary>
         /// Name of the configuration.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// Configurations for collecting transactions offline.
         /// </summary>
         [JsonProperty("offline")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("offline")]
+#endif
         public ConfigurationOfflineOptions Offline { get; set; }
 
         /// <summary>
         /// Reboot time settings for readers that support customized reboot time configuration.
         /// </summary>
         [JsonProperty("reboot_window")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reboot_window")]
+#endif
         public ConfigurationRebootWindowOptions RebootWindow { get; set; }
 
         /// <summary>
         /// An object containing device type specific settings for Stripe S700 readers.
         /// </summary>
         [JsonProperty("stripe_s700")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("stripe_s700")]
+#endif
         public ConfigurationStripeS700Options StripeS700 { get; set; }
 
         /// <summary>
         /// Tipping configurations for readers supporting on-reader tips.
         /// </summary>
         [JsonProperty("tipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tipping")]
+#endif
         public ConfigurationTippingOptions Tipping { get; set; }
 
         /// <summary>
         /// An object containing device type specific settings for Verifone P400 readers.
         /// </summary>
         [JsonProperty("verifone_p400")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verifone_p400")]
+#endif
         public ConfigurationVerifoneP400Options VerifoneP400 { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationListOptions.cs b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationListOptions.cs
index 5c11539389..7abd9ff897 100644
--- a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationListOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationListOptions : ListOptions
     {
@@ -9,6 +12,9 @@ public class ConfigurationListOptions : ListOptions
         /// if present, only return the account default or non-default configurations.
         /// </summary>
         [JsonProperty("is_account_default")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("is_account_default")]
+#endif
         public bool? IsAccountDefault { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationOfflineOptions.cs b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationOfflineOptions.cs
index 414a8a666b..bec731fceb 100644
--- a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationOfflineOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationOfflineOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationOfflineOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class ConfigurationOfflineOptions : INestedOptions
         /// Defaults to false.
         /// </summary>
         [JsonProperty("enabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled")]
+#endif
         public bool? Enabled { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationRebootWindowOptions.cs b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationRebootWindowOptions.cs
index ec2c20c7f9..29b0c66e08 100644
--- a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationRebootWindowOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationRebootWindowOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationRebootWindowOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class ConfigurationRebootWindowOptions : INestedOptions
         /// value must be different than the start_hour.
         /// </summary>
         [JsonProperty("end_hour")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end_hour")]
+#endif
         public long? EndHour { get; set; }
 
         /// <summary>
         /// Integer between 0 to 23 that represents the start hour of the reboot time window.
         /// </summary>
         [JsonProperty("start_hour")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("start_hour")]
+#endif
         public long? StartHour { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationService.cs b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationService.cs
index 554f159e90..2572fed1ef 100644
--- a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationService.cs
+++ b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Terminal
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class ConfigurationService : Service<Configuration>,
+    public class ConfigurationService : Service,
         ICreatable<Configuration, ConfigurationCreateOptions>,
         IDeletable<Configuration, ConfigurationDeleteOptions>,
         IListable<Configuration, ConfigurationListOptions>,
diff --git a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationStripeS700Options.cs b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationStripeS700Options.cs
index 78947b3953..1435d3c1fd 100644
--- a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationStripeS700Options.cs
+++ b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationStripeS700Options.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationStripeS700Options : INestedOptions
     {
@@ -9,6 +12,9 @@ public class ConfigurationStripeS700Options : INestedOptions
         /// A File ID representing an image you would like displayed on the reader.
         /// </summary>
         [JsonProperty("splashscreen")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("splashscreen")]
+#endif
         public string Splashscreen { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingAudOptions.cs b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingAudOptions.cs
index 36338385c6..c2e654ad54 100644
--- a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingAudOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingAudOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingAudOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingAudOptions : INestedOptions
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long?> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long?> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingAudOptions : INestedOptions
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long? SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingCadOptions.cs b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingCadOptions.cs
index 5f3b2cc929..5ba3793976 100644
--- a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingCadOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingCadOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingCadOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingCadOptions : INestedOptions
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long?> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long?> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingCadOptions : INestedOptions
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long? SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingChfOptions.cs b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingChfOptions.cs
index 705bd93db7..811be448da 100644
--- a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingChfOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingChfOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingChfOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingChfOptions : INestedOptions
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long?> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long?> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingChfOptions : INestedOptions
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long? SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingCzkOptions.cs b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingCzkOptions.cs
index 1135ef894b..6960653bd2 100644
--- a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingCzkOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingCzkOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingCzkOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingCzkOptions : INestedOptions
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long?> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long?> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingCzkOptions : INestedOptions
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long? SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingDkkOptions.cs b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingDkkOptions.cs
index 1ed10146ba..b55f8c3d6b 100644
--- a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingDkkOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingDkkOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingDkkOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingDkkOptions : INestedOptions
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long?> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long?> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingDkkOptions : INestedOptions
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long? SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingEurOptions.cs b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingEurOptions.cs
index 26455f3235..3216d978f1 100644
--- a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingEurOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingEurOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingEurOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingEurOptions : INestedOptions
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long?> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long?> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingEurOptions : INestedOptions
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long? SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingGbpOptions.cs b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingGbpOptions.cs
index 3d0cdccad3..6516419309 100644
--- a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingGbpOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingGbpOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingGbpOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingGbpOptions : INestedOptions
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long?> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long?> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingGbpOptions : INestedOptions
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long? SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingHkdOptions.cs b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingHkdOptions.cs
index f012a05760..bcf744d4ee 100644
--- a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingHkdOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingHkdOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingHkdOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingHkdOptions : INestedOptions
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long?> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long?> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingHkdOptions : INestedOptions
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long? SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingJpyOptions.cs b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingJpyOptions.cs
index a6f81fae1b..137397fd7d 100644
--- a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingJpyOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingJpyOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingJpyOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingJpyOptions : INestedOptions
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long?> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long?> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingJpyOptions : INestedOptions
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long? SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingMyrOptions.cs b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingMyrOptions.cs
index da1aae498e..6e186de547 100644
--- a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingMyrOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingMyrOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingMyrOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingMyrOptions : INestedOptions
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long?> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long?> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingMyrOptions : INestedOptions
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long? SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingNokOptions.cs b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingNokOptions.cs
index 9a28b43a6e..a8f26d6339 100644
--- a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingNokOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingNokOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingNokOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingNokOptions : INestedOptions
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long?> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long?> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingNokOptions : INestedOptions
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long? SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingNzdOptions.cs b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingNzdOptions.cs
index 07ff9c8376..e9d407e8c8 100644
--- a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingNzdOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingNzdOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingNzdOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingNzdOptions : INestedOptions
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long?> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long?> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingNzdOptions : INestedOptions
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long? SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingOptions.cs b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingOptions.cs
index a3b33ed91b..99cb9ca5c8 100644
--- a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingOptions : INestedOptions
     {
@@ -9,96 +12,144 @@ public class ConfigurationTippingOptions : INestedOptions
         /// Tipping configuration for AUD.
         /// </summary>
         [JsonProperty("aud")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("aud")]
+#endif
         public ConfigurationTippingAudOptions Aud { get; set; }
 
         /// <summary>
         /// Tipping configuration for CAD.
         /// </summary>
         [JsonProperty("cad")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cad")]
+#endif
         public ConfigurationTippingCadOptions Cad { get; set; }
 
         /// <summary>
         /// Tipping configuration for CHF.
         /// </summary>
         [JsonProperty("chf")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("chf")]
+#endif
         public ConfigurationTippingChfOptions Chf { get; set; }
 
         /// <summary>
         /// Tipping configuration for CZK.
         /// </summary>
         [JsonProperty("czk")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("czk")]
+#endif
         public ConfigurationTippingCzkOptions Czk { get; set; }
 
         /// <summary>
         /// Tipping configuration for DKK.
         /// </summary>
         [JsonProperty("dkk")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dkk")]
+#endif
         public ConfigurationTippingDkkOptions Dkk { get; set; }
 
         /// <summary>
         /// Tipping configuration for EUR.
         /// </summary>
         [JsonProperty("eur")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eur")]
+#endif
         public ConfigurationTippingEurOptions Eur { get; set; }
 
         /// <summary>
         /// Tipping configuration for GBP.
         /// </summary>
         [JsonProperty("gbp")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gbp")]
+#endif
         public ConfigurationTippingGbpOptions Gbp { get; set; }
 
         /// <summary>
         /// Tipping configuration for HKD.
         /// </summary>
         [JsonProperty("hkd")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("hkd")]
+#endif
         public ConfigurationTippingHkdOptions Hkd { get; set; }
 
         /// <summary>
         /// Tipping configuration for JPY.
         /// </summary>
         [JsonProperty("jpy")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("jpy")]
+#endif
         public ConfigurationTippingJpyOptions Jpy { get; set; }
 
         /// <summary>
         /// Tipping configuration for MYR.
         /// </summary>
         [JsonProperty("myr")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("myr")]
+#endif
         public ConfigurationTippingMyrOptions Myr { get; set; }
 
         /// <summary>
         /// Tipping configuration for NOK.
         /// </summary>
         [JsonProperty("nok")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("nok")]
+#endif
         public ConfigurationTippingNokOptions Nok { get; set; }
 
         /// <summary>
         /// Tipping configuration for NZD.
         /// </summary>
         [JsonProperty("nzd")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("nzd")]
+#endif
         public ConfigurationTippingNzdOptions Nzd { get; set; }
 
         /// <summary>
         /// Tipping configuration for PLN.
         /// </summary>
         [JsonProperty("pln")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pln")]
+#endif
         public ConfigurationTippingPlnOptions Pln { get; set; }
 
         /// <summary>
         /// Tipping configuration for SEK.
         /// </summary>
         [JsonProperty("sek")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sek")]
+#endif
         public ConfigurationTippingSekOptions Sek { get; set; }
 
         /// <summary>
         /// Tipping configuration for SGD.
         /// </summary>
         [JsonProperty("sgd")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sgd")]
+#endif
         public ConfigurationTippingSgdOptions Sgd { get; set; }
 
         /// <summary>
         /// Tipping configuration for USD.
         /// </summary>
         [JsonProperty("usd")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("usd")]
+#endif
         public ConfigurationTippingUsdOptions Usd { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingPlnOptions.cs b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingPlnOptions.cs
index 7e230cb043..d54154552e 100644
--- a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingPlnOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingPlnOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingPlnOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingPlnOptions : INestedOptions
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long?> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long?> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingPlnOptions : INestedOptions
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long? SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingSekOptions.cs b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingSekOptions.cs
index d2fec35aab..caf440299a 100644
--- a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingSekOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingSekOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingSekOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingSekOptions : INestedOptions
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long?> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long?> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingSekOptions : INestedOptions
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long? SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingSgdOptions.cs b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingSgdOptions.cs
index ea968dda22..1eab05cb64 100644
--- a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingSgdOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingSgdOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingSgdOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingSgdOptions : INestedOptions
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long?> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long?> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingSgdOptions : INestedOptions
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long? SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingUsdOptions.cs b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingUsdOptions.cs
index 38c3fe460c..9304fd68f4 100644
--- a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingUsdOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationTippingUsdOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationTippingUsdOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class ConfigurationTippingUsdOptions : INestedOptions
         /// Fixed amounts displayed when collecting a tip.
         /// </summary>
         [JsonProperty("fixed_amounts")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fixed_amounts")]
+#endif
         public List<long?> FixedAmounts { get; set; }
 
         /// <summary>
         /// Percentages displayed when collecting a tip.
         /// </summary>
         [JsonProperty("percentages")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percentages")]
+#endif
         public List<long?> Percentages { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ConfigurationTippingUsdOptions : INestedOptions
         /// displayed.
         /// </summary>
         [JsonProperty("smart_tip_threshold")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("smart_tip_threshold")]
+#endif
         public long? SmartTipThreshold { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationUpdateOptions.cs b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationUpdateOptions.cs
index d103bc7bdc..ed5a5ed5f4 100644
--- a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationUpdateOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationUpdateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationUpdateOptions : BaseOptions
     {
@@ -9,42 +12,63 @@ public class ConfigurationUpdateOptions : BaseOptions
         /// An object containing device type specific settings for BBPOS WisePOS E readers.
         /// </summary>
         [JsonProperty("bbpos_wisepos_e")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bbpos_wisepos_e")]
+#endif
         public ConfigurationBbposWiseposEOptions BbposWiseposE { get; set; }
 
         /// <summary>
         /// Name of the configuration.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// Configurations for collecting transactions offline.
         /// </summary>
         [JsonProperty("offline")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("offline")]
+#endif
         public ConfigurationOfflineOptions Offline { get; set; }
 
         /// <summary>
         /// Reboot time settings for readers that support customized reboot time configuration.
         /// </summary>
         [JsonProperty("reboot_window")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reboot_window")]
+#endif
         public ConfigurationRebootWindowOptions RebootWindow { get; set; }
 
         /// <summary>
         /// An object containing device type specific settings for Stripe S700 readers.
         /// </summary>
         [JsonProperty("stripe_s700")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("stripe_s700")]
+#endif
         public ConfigurationStripeS700Options StripeS700 { get; set; }
 
         /// <summary>
         /// Tipping configurations for readers supporting on-reader tips.
         /// </summary>
         [JsonProperty("tipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tipping")]
+#endif
         public ConfigurationTippingOptions Tipping { get; set; }
 
         /// <summary>
         /// An object containing device type specific settings for Verifone P400 readers.
         /// </summary>
         [JsonProperty("verifone_p400")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verifone_p400")]
+#endif
         public ConfigurationVerifoneP400Options VerifoneP400 { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationVerifoneP400Options.cs b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationVerifoneP400Options.cs
index 82493ecc9c..4e9bb22b9f 100644
--- a/src/Stripe.net/Services/Terminal/Configurations/ConfigurationVerifoneP400Options.cs
+++ b/src/Stripe.net/Services/Terminal/Configurations/ConfigurationVerifoneP400Options.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfigurationVerifoneP400Options : INestedOptions
     {
@@ -9,6 +12,9 @@ public class ConfigurationVerifoneP400Options : INestedOptions
         /// A File ID representing an image you would like displayed on the reader.
         /// </summary>
         [JsonProperty("splashscreen")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("splashscreen")]
+#endif
         public string Splashscreen { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/ConnectionTokens/ConnectionTokenCreateOptions.cs b/src/Stripe.net/Services/Terminal/ConnectionTokens/ConnectionTokenCreateOptions.cs
index 3cd3cfb3f7..51983e1a86 100644
--- a/src/Stripe.net/Services/Terminal/ConnectionTokens/ConnectionTokenCreateOptions.cs
+++ b/src/Stripe.net/Services/Terminal/ConnectionTokens/ConnectionTokenCreateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConnectionTokenCreateOptions : BaseOptions
     {
@@ -14,6 +17,9 @@ public class ConnectionTokenCreateOptions : BaseOptions
         /// docs on scoping connection tokens</a>.
         /// </summary>
         [JsonProperty("location")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("location")]
+#endif
         public string Location { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/ConnectionTokens/ConnectionTokenService.cs b/src/Stripe.net/Services/Terminal/ConnectionTokens/ConnectionTokenService.cs
index 53c4b7f7c8..af6ffa5ec4 100644
--- a/src/Stripe.net/Services/Terminal/ConnectionTokens/ConnectionTokenService.cs
+++ b/src/Stripe.net/Services/Terminal/ConnectionTokens/ConnectionTokenService.cs
@@ -6,7 +6,7 @@ namespace Stripe.Terminal
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class ConnectionTokenService : Service<ConnectionToken>,
+    public class ConnectionTokenService : Service,
         ICreatable<ConnectionToken, ConnectionTokenCreateOptions>
     {
         public ConnectionTokenService()
diff --git a/src/Stripe.net/Services/Terminal/Locations/LocationCreateOptions.cs b/src/Stripe.net/Services/Terminal/Locations/LocationCreateOptions.cs
index a9917edef2..3cbae07af0 100644
--- a/src/Stripe.net/Services/Terminal/Locations/LocationCreateOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Locations/LocationCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class LocationCreateOptions : BaseOptions, IHasMetadata
     {
@@ -10,18 +13,27 @@ public class LocationCreateOptions : BaseOptions, IHasMetadata
         /// The full address of the location.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public AddressOptions Address { get; set; }
 
         /// <summary>
         /// The ID of a configuration that will be used to customize all readers in this location.
         /// </summary>
         [JsonProperty("configuration_overrides")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("configuration_overrides")]
+#endif
         public string ConfigurationOverrides { get; set; }
 
         /// <summary>
         /// A name for the location. Maximum length is 1000 characters.
         /// </summary>
         [JsonProperty("display_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_name")]
+#endif
         public string DisplayName { get; set; }
 
         /// <summary>
@@ -31,6 +43,9 @@ public class LocationCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Locations/LocationService.cs b/src/Stripe.net/Services/Terminal/Locations/LocationService.cs
index 4abdad9de9..eea53324bf 100644
--- a/src/Stripe.net/Services/Terminal/Locations/LocationService.cs
+++ b/src/Stripe.net/Services/Terminal/Locations/LocationService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Terminal
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class LocationService : Service<Location>,
+    public class LocationService : Service,
         ICreatable<Location, LocationCreateOptions>,
         IDeletable<Location, LocationDeleteOptions>,
         IListable<Location, LocationListOptions>,
diff --git a/src/Stripe.net/Services/Terminal/Locations/LocationUpdateOptions.cs b/src/Stripe.net/Services/Terminal/Locations/LocationUpdateOptions.cs
index 273fbb72e6..f299725863 100644
--- a/src/Stripe.net/Services/Terminal/Locations/LocationUpdateOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Locations/LocationUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class LocationUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -12,18 +15,27 @@ public class LocationUpdateOptions : BaseOptions, IHasMetadata
         /// re-register any existing readers to that location.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public AddressOptions Address { get; set; }
 
         /// <summary>
         /// The ID of a configuration that will be used to customize all readers in this location.
         /// </summary>
         [JsonProperty("configuration_overrides")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("configuration_overrides")]
+#endif
         public string ConfigurationOverrides { get; set; }
 
         /// <summary>
         /// A name for the location.
         /// </summary>
         [JsonProperty("display_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("display_name")]
+#endif
         public string DisplayName { get; set; }
 
         /// <summary>
@@ -33,6 +45,9 @@ public class LocationUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Readers/ReaderCartLineItemOptions.cs b/src/Stripe.net/Services/Terminal/Readers/ReaderCartLineItemOptions.cs
index bd75e97f2b..707ec45616 100644
--- a/src/Stripe.net/Services/Terminal/Readers/ReaderCartLineItemOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Readers/ReaderCartLineItemOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReaderCartLineItemOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class ReaderCartLineItemOptions : INestedOptions
         /// The price of the item in cents.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
         /// The description or name of the item.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// The quantity of the line item being purchased.
         /// </summary>
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public long? Quantity { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Readers/ReaderCartOptions.cs b/src/Stripe.net/Services/Terminal/Readers/ReaderCartOptions.cs
index b35977c815..6bbc865064 100644
--- a/src/Stripe.net/Services/Terminal/Readers/ReaderCartOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Readers/ReaderCartOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReaderCartOptions : INestedOptions
     {
@@ -12,24 +15,36 @@ public class ReaderCartOptions : INestedOptions
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// Array of line items that were purchased.
         /// </summary>
         [JsonProperty("line_items")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line_items")]
+#endif
         public List<ReaderCartLineItemOptions> LineItems { get; set; }
 
         /// <summary>
         /// The amount of tax in cents.
         /// </summary>
         [JsonProperty("tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax")]
+#endif
         public long? Tax { get; set; }
 
         /// <summary>
         /// Total balance of cart due in cents.
         /// </summary>
         [JsonProperty("total")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("total")]
+#endif
         public long? Total { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Readers/ReaderCreateOptions.cs b/src/Stripe.net/Services/Terminal/Readers/ReaderCreateOptions.cs
index 9166bec3ea..8c8ec2377d 100644
--- a/src/Stripe.net/Services/Terminal/Readers/ReaderCreateOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Readers/ReaderCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReaderCreateOptions : BaseOptions, IHasMetadata
     {
@@ -11,12 +14,18 @@ public class ReaderCreateOptions : BaseOptions, IHasMetadata
         /// the registration code will be used.
         /// </summary>
         [JsonProperty("label")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("label")]
+#endif
         public string Label { get; set; }
 
         /// <summary>
         /// The location to assign the reader to.
         /// </summary>
         [JsonProperty("location")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("location")]
+#endif
         public string Location { get; set; }
 
         /// <summary>
@@ -26,12 +35,18 @@ public class ReaderCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// A code generated by the reader used for registering to an account.
         /// </summary>
         [JsonProperty("registration_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("registration_code")]
+#endif
         public string RegistrationCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Readers/ReaderListOptions.cs b/src/Stripe.net/Services/Terminal/Readers/ReaderListOptions.cs
index c2d42f06e5..cf9c69e725 100644
--- a/src/Stripe.net/Services/Terminal/Readers/ReaderListOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Readers/ReaderListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReaderListOptions : ListOptions
     {
@@ -12,18 +15,27 @@ public class ReaderListOptions : ListOptions
         /// <c>stripe_s700</c>, or <c>verifone_P400</c>.
         /// </summary>
         [JsonProperty("device_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("device_type")]
+#endif
         public string DeviceType { get; set; }
 
         /// <summary>
         /// A location ID to filter the response list to only readers at the specific location.
         /// </summary>
         [JsonProperty("location")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("location")]
+#endif
         public string Location { get; set; }
 
         /// <summary>
         /// Filters readers by serial number.
         /// </summary>
         [JsonProperty("serial_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("serial_number")]
+#endif
         public string SerialNumber { get; set; }
 
         /// <summary>
@@ -31,6 +43,9 @@ public class ReaderListOptions : ListOptions
         /// One of: <c>offline</c>, or <c>online</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Readers/ReaderProcessConfigOptions.cs b/src/Stripe.net/Services/Terminal/Readers/ReaderProcessConfigOptions.cs
index b0b655b3e5..070f119434 100644
--- a/src/Stripe.net/Services/Terminal/Readers/ReaderProcessConfigOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Readers/ReaderProcessConfigOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReaderProcessConfigOptions : INestedOptions
     {
@@ -12,24 +15,36 @@ public class ReaderProcessConfigOptions : INestedOptions
         /// One of: <c>always</c>, <c>limited</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("allow_redisplay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allow_redisplay")]
+#endif
         public string AllowRedisplay { get; set; }
 
         /// <summary>
         /// Enables cancel button on transaction screens.
         /// </summary>
         [JsonProperty("enable_customer_cancellation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enable_customer_cancellation")]
+#endif
         public bool? EnableCustomerCancellation { get; set; }
 
         /// <summary>
         /// Override showing a tipping selection screen on this transaction.
         /// </summary>
         [JsonProperty("skip_tipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("skip_tipping")]
+#endif
         public bool? SkipTipping { get; set; }
 
         /// <summary>
         /// Tipping configuration for this transaction.
         /// </summary>
         [JsonProperty("tipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tipping")]
+#endif
         public ReaderProcessConfigTippingOptions Tipping { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Readers/ReaderProcessConfigTippingOptions.cs b/src/Stripe.net/Services/Terminal/Readers/ReaderProcessConfigTippingOptions.cs
index 581bf5039a..df8ff1abaf 100644
--- a/src/Stripe.net/Services/Terminal/Readers/ReaderProcessConfigTippingOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Readers/ReaderProcessConfigTippingOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReaderProcessConfigTippingOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class ReaderProcessConfigTippingOptions : INestedOptions
         /// to represent $1.00 or 100 to represent ¥100, a zero-decimal currency).
         /// </summary>
         [JsonProperty("amount_eligible")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_eligible")]
+#endif
         public long? AmountEligible { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Readers/ReaderProcessPaymentIntentOptions.cs b/src/Stripe.net/Services/Terminal/Readers/ReaderProcessPaymentIntentOptions.cs
index d30e91b0ab..02d62fc787 100644
--- a/src/Stripe.net/Services/Terminal/Readers/ReaderProcessPaymentIntentOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Readers/ReaderProcessPaymentIntentOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReaderProcessPaymentIntentOptions : BaseOptions
     {
@@ -9,12 +12,18 @@ public class ReaderProcessPaymentIntentOptions : BaseOptions
         /// PaymentIntent ID.
         /// </summary>
         [JsonProperty("payment_intent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_intent")]
+#endif
         public string PaymentIntent { get; set; }
 
         /// <summary>
         /// Configuration overrides.
         /// </summary>
         [JsonProperty("process_config")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("process_config")]
+#endif
         public ReaderProcessConfigOptions ProcessConfig { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Readers/ReaderProcessSetupIntentOptions.cs b/src/Stripe.net/Services/Terminal/Readers/ReaderProcessSetupIntentOptions.cs
index ae2142ca71..9ee775e098 100644
--- a/src/Stripe.net/Services/Terminal/Readers/ReaderProcessSetupIntentOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Readers/ReaderProcessSetupIntentOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReaderProcessSetupIntentOptions : BaseOptions
     {
@@ -12,18 +15,27 @@ public class ReaderProcessSetupIntentOptions : BaseOptions
         /// One of: <c>always</c>, <c>limited</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("allow_redisplay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allow_redisplay")]
+#endif
         public string AllowRedisplay { get; set; }
 
         /// <summary>
         /// Configuration overrides.
         /// </summary>
         [JsonProperty("process_config")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("process_config")]
+#endif
         public ReaderProcessConfigOptions ProcessConfig { get; set; }
 
         /// <summary>
         /// SetupIntent ID.
         /// </summary>
         [JsonProperty("setup_intent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_intent")]
+#endif
         public string SetupIntent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Readers/ReaderRefundPaymentConfigOptions.cs b/src/Stripe.net/Services/Terminal/Readers/ReaderRefundPaymentConfigOptions.cs
index 0914551888..0c20e36f4f 100644
--- a/src/Stripe.net/Services/Terminal/Readers/ReaderRefundPaymentConfigOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Readers/ReaderRefundPaymentConfigOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReaderRefundPaymentConfigOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class ReaderRefundPaymentConfigOptions : INestedOptions
         /// Enables cancel button on transaction screens.
         /// </summary>
         [JsonProperty("enable_customer_cancellation")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enable_customer_cancellation")]
+#endif
         public bool? EnableCustomerCancellation { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Readers/ReaderRefundPaymentOptions.cs b/src/Stripe.net/Services/Terminal/Readers/ReaderRefundPaymentOptions.cs
index a465e3880f..4b5c25cf0e 100644
--- a/src/Stripe.net/Services/Terminal/Readers/ReaderRefundPaymentOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Readers/ReaderRefundPaymentOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReaderRefundPaymentOptions : BaseOptions, IHasMetadata
     {
@@ -11,12 +14,18 @@ public class ReaderRefundPaymentOptions : BaseOptions, IHasMetadata
         /// refund.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
         /// ID of the Charge to refund.
         /// </summary>
         [JsonProperty("charge")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("charge")]
+#endif
         public string Charge { get; set; }
 
         /// <summary>
@@ -26,12 +35,18 @@ public class ReaderRefundPaymentOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// ID of the PaymentIntent to refund.
         /// </summary>
         [JsonProperty("payment_intent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_intent")]
+#endif
         public string PaymentIntent { get; set; }
 
         /// <summary>
@@ -42,12 +57,18 @@ public class ReaderRefundPaymentOptions : BaseOptions, IHasMetadata
         /// created the charge.
         /// </summary>
         [JsonProperty("refund_application_fee")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_application_fee")]
+#endif
         public bool? RefundApplicationFee { get; set; }
 
         /// <summary>
         /// Configuration overrides.
         /// </summary>
         [JsonProperty("refund_payment_config")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_payment_config")]
+#endif
         public ReaderRefundPaymentConfigOptions RefundPaymentConfig { get; set; }
 
         /// <summary>
@@ -57,6 +78,9 @@ public class ReaderRefundPaymentOptions : BaseOptions, IHasMetadata
         /// created the charge.
         /// </summary>
         [JsonProperty("reverse_transfer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reverse_transfer")]
+#endif
         public bool? ReverseTransfer { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Readers/ReaderService.cs b/src/Stripe.net/Services/Terminal/Readers/ReaderService.cs
index e030af1a9c..c63ad398a6 100644
--- a/src/Stripe.net/Services/Terminal/Readers/ReaderService.cs
+++ b/src/Stripe.net/Services/Terminal/Readers/ReaderService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Terminal
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class ReaderService : Service<Reader>,
+    public class ReaderService : Service,
         ICreatable<Reader, ReaderCreateOptions>,
         IDeletable<Reader, ReaderDeleteOptions>,
         IListable<Reader, ReaderListOptions>,
diff --git a/src/Stripe.net/Services/Terminal/Readers/ReaderSetReaderDisplayOptions.cs b/src/Stripe.net/Services/Terminal/Readers/ReaderSetReaderDisplayOptions.cs
index fd9a1c7fce..c7bed33a55 100644
--- a/src/Stripe.net/Services/Terminal/Readers/ReaderSetReaderDisplayOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Readers/ReaderSetReaderDisplayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReaderSetReaderDisplayOptions : BaseOptions
     {
@@ -9,12 +12,18 @@ public class ReaderSetReaderDisplayOptions : BaseOptions
         /// Cart.
         /// </summary>
         [JsonProperty("cart")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cart")]
+#endif
         public ReaderCartOptions Cart { get; set; }
 
         /// <summary>
         /// Type.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Terminal/Readers/ReaderUpdateOptions.cs b/src/Stripe.net/Services/Terminal/Readers/ReaderUpdateOptions.cs
index a7647d400a..73de028c9d 100644
--- a/src/Stripe.net/Services/Terminal/Readers/ReaderUpdateOptions.cs
+++ b/src/Stripe.net/Services/Terminal/Readers/ReaderUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Terminal
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReaderUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -10,6 +13,9 @@ public class ReaderUpdateOptions : BaseOptions, IHasMetadata
         /// The new label of the reader.
         /// </summary>
         [JsonProperty("label")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("label")]
+#endif
         public string Label { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class ReaderUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenCreateOptions.cs b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenCreateOptions.cs
index 85be8957b3..e01df0b94b 100644
--- a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenCreateOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenCreateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenCreateOptions : BaseOptions
     {
@@ -9,18 +12,27 @@ public class ConfirmationTokenCreateOptions : BaseOptions
         /// ID of an existing PaymentMethod.
         /// </summary>
         [JsonProperty("payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method")]
+#endif
         public string PaymentMethod { get; set; }
 
         /// <summary>
         /// If provided, this hash will be used to create a PaymentMethod.
         /// </summary>
         [JsonProperty("payment_method_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method_data")]
+#endif
         public ConfirmationTokenPaymentMethodDataOptions PaymentMethodData { get; set; }
 
         /// <summary>
         /// Return URL used to confirm the Intent.
         /// </summary>
         [JsonProperty("return_url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("return_url")]
+#endif
         public string ReturnUrl { get; set; }
 
         /// <summary>
@@ -34,12 +46,18 @@ public class ConfirmationTokenCreateOptions : BaseOptions
         /// One of: <c>off_session</c>, or <c>on_session</c>.
         /// </summary>
         [JsonProperty("setup_future_usage")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("setup_future_usage")]
+#endif
         public string SetupFutureUsage { get; set; }
 
         /// <summary>
         /// Shipping information for this ConfirmationToken.
         /// </summary>
         [JsonProperty("shipping")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("shipping")]
+#endif
         public ConfirmationTokenShippingOptions Shipping { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataAcssDebitOptions.cs b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataAcssDebitOptions.cs
index 918be88d4e..caeb7686b8 100644
--- a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataAcssDebitOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataAcssDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodDataAcssDebitOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class ConfirmationTokenPaymentMethodDataAcssDebitOptions : INestedOptions
         /// Customer's bank account number.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
         /// Institution number of the customer's bank.
         /// </summary>
         [JsonProperty("institution_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("institution_number")]
+#endif
         public string InstitutionNumber { get; set; }
 
         /// <summary>
         /// Transit number of the customer's bank.
         /// </summary>
         [JsonProperty("transit_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transit_number")]
+#endif
         public string TransitNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataAuBecsDebitOptions.cs b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataAuBecsDebitOptions.cs
index 3de9b77ce8..25968abd4a 100644
--- a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataAuBecsDebitOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataAuBecsDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodDataAuBecsDebitOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class ConfirmationTokenPaymentMethodDataAuBecsDebitOptions : INestedOptio
         /// The account number for the bank account.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
         /// Bank-State-Branch number of the bank account.
         /// </summary>
         [JsonProperty("bsb_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bsb_number")]
+#endif
         public string BsbNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataBacsDebitOptions.cs b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataBacsDebitOptions.cs
index c86d877deb..74b97b3c8c 100644
--- a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataBacsDebitOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataBacsDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodDataBacsDebitOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class ConfirmationTokenPaymentMethodDataBacsDebitOptions : INestedOptions
         /// Account number of the bank account that the funds will be debited from.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
         /// Sort code of the bank account. (e.g., <c>10-20-30</c>).
         /// </summary>
         [JsonProperty("sort_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sort_code")]
+#endif
         public string SortCode { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataBillingDetailsOptions.cs b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataBillingDetailsOptions.cs
index 15d068fdfa..fa641e4ab1 100644
--- a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataBillingDetailsOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataBillingDetailsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodDataBillingDetailsOptions : INestedOptions
     {
@@ -9,24 +12,36 @@ public class ConfirmationTokenPaymentMethodDataBillingDetailsOptions : INestedOp
         /// Billing address.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public AddressOptions Address { get; set; }
 
         /// <summary>
         /// Email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// Full name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// Billing phone number (including extension).
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataBoletoOptions.cs b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataBoletoOptions.cs
index 58254203bc..d026112214 100644
--- a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataBoletoOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataBoletoOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodDataBoletoOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class ConfirmationTokenPaymentMethodDataBoletoOptions : INestedOptions
         /// consumers).
         /// </summary>
         [JsonProperty("tax_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_id")]
+#endif
         public string TaxId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataEpsOptions.cs b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataEpsOptions.cs
index 10c22a6396..83cb427656 100644
--- a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataEpsOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataEpsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodDataEpsOptions : INestedOptions
     {
@@ -23,6 +26,9 @@ public class ConfirmationTokenPaymentMethodDataEpsOptions : INestedOptions
         /// <c>vr_bank_braunau</c>.
         /// </summary>
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataFpxOptions.cs b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataFpxOptions.cs
index 9c3fe28eb2..3e74aebd6c 100644
--- a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataFpxOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataFpxOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodDataFpxOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class ConfirmationTokenPaymentMethodDataFpxOptions : INestedOptions
         /// One of: <c>company</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("account_holder_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_type")]
+#endif
         public string AccountHolderType { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class ConfirmationTokenPaymentMethodDataFpxOptions : INestedOptions
         /// <c>public_bank</c>, <c>rhb</c>, <c>standard_chartered</c>, or <c>uob</c>.
         /// </summary>
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataIdealOptions.cs b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataIdealOptions.cs
index 05a815fe5a..257ee608d3 100644
--- a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataIdealOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataIdealOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodDataIdealOptions : INestedOptions
     {
@@ -14,6 +17,9 @@ public class ConfirmationTokenPaymentMethodDataIdealOptions : INestedOptions
         /// <c>yoursafe</c>.
         /// </summary>
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataKlarnaDobOptions.cs b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataKlarnaDobOptions.cs
index 3b11464911..2cf979bd0d 100644
--- a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataKlarnaDobOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataKlarnaDobOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodDataKlarnaDobOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class ConfirmationTokenPaymentMethodDataKlarnaDobOptions : INestedOptions
         /// The day of birth, between 1 and 31.
         /// </summary>
         [JsonProperty("day")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("day")]
+#endif
         public long? Day { get; set; }
 
         /// <summary>
         /// The month of birth, between 1 and 12.
         /// </summary>
         [JsonProperty("month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("month")]
+#endif
         public long? Month { get; set; }
 
         /// <summary>
         /// The four-digit year of birth.
         /// </summary>
         [JsonProperty("year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("year")]
+#endif
         public long? Year { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataKlarnaOptions.cs b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataKlarnaOptions.cs
index 44cc5d43bc..4dd3401ea3 100644
--- a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataKlarnaOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataKlarnaOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodDataKlarnaOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class ConfirmationTokenPaymentMethodDataKlarnaOptions : INestedOptions
         /// Customer's date of birth.
         /// </summary>
         [JsonProperty("dob")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dob")]
+#endif
         public ConfirmationTokenPaymentMethodDataKlarnaDobOptions Dob { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataNaverPayOptions.cs b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataNaverPayOptions.cs
index d22f26f119..04bfd96a20 100644
--- a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataNaverPayOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataNaverPayOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodDataNaverPayOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class ConfirmationTokenPaymentMethodDataNaverPayOptions : INestedOptions
         /// One of: <c>card</c>, or <c>points</c>.
         /// </summary>
         [JsonProperty("funding")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("funding")]
+#endif
         public string Funding { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataOptions.cs b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataOptions.cs
index e691124817..35490aafec 100644
--- a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.TestHelpers
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMetadata
     {
@@ -11,6 +14,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// Debit payment method.
         /// </summary>
         [JsonProperty("acss_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acss_debit")]
+#endif
         public ConfirmationTokenPaymentMethodDataAcssDebitOptions AcssDebit { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// payment method.
         /// </summary>
         [JsonProperty("affirm")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("affirm")]
+#endif
         public ConfirmationTokenPaymentMethodDataAffirmOptions Affirm { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// the AfterpayClearpay payment method.
         /// </summary>
         [JsonProperty("afterpay_clearpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("afterpay_clearpay")]
+#endif
         public ConfirmationTokenPaymentMethodDataAfterpayClearpayOptions AfterpayClearpay { get; set; }
 
         /// <summary>
@@ -32,6 +44,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// payment method.
         /// </summary>
         [JsonProperty("alipay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alipay")]
+#endif
         public ConfirmationTokenPaymentMethodDataAlipayOptions Alipay { get; set; }
 
         /// <summary>
@@ -42,6 +57,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// One of: <c>always</c>, <c>limited</c>, or <c>unspecified</c>.
         /// </summary>
         [JsonProperty("allow_redisplay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("allow_redisplay")]
+#endif
         public string AllowRedisplay { get; set; }
 
         /// <summary>
@@ -49,6 +67,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// method.
         /// </summary>
         [JsonProperty("alma")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("alma")]
+#endif
         public ConfirmationTokenPaymentMethodDataAlmaOptions Alma { get; set; }
 
         /// <summary>
@@ -56,6 +77,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// payment method.
         /// </summary>
         [JsonProperty("amazon_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amazon_pay")]
+#endif
         public ConfirmationTokenPaymentMethodDataAmazonPayOptions AmazonPay { get; set; }
 
         /// <summary>
@@ -63,6 +87,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// bank account.
         /// </summary>
         [JsonProperty("au_becs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("au_becs_debit")]
+#endif
         public ConfirmationTokenPaymentMethodDataAuBecsDebitOptions AuBecsDebit { get; set; }
 
         /// <summary>
@@ -70,6 +97,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// Direct Debit bank account.
         /// </summary>
         [JsonProperty("bacs_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bacs_debit")]
+#endif
         public ConfirmationTokenPaymentMethodDataBacsDebitOptions BacsDebit { get; set; }
 
         /// <summary>
@@ -77,6 +107,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// Bancontact payment method.
         /// </summary>
         [JsonProperty("bancontact")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bancontact")]
+#endif
         public ConfirmationTokenPaymentMethodDataBancontactOptions Bancontact { get; set; }
 
         /// <summary>
@@ -84,6 +117,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// particular types of payment methods.
         /// </summary>
         [JsonProperty("billing_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_details")]
+#endif
         public ConfirmationTokenPaymentMethodDataBillingDetailsOptions BillingDetails { get; set; }
 
         /// <summary>
@@ -91,6 +127,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// payment method.
         /// </summary>
         [JsonProperty("blik")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("blik")]
+#endif
         public ConfirmationTokenPaymentMethodDataBlikOptions Blik { get; set; }
 
         /// <summary>
@@ -98,6 +137,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// payment method.
         /// </summary>
         [JsonProperty("boleto")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("boleto")]
+#endif
         public ConfirmationTokenPaymentMethodDataBoletoOptions Boleto { get; set; }
 
         /// <summary>
@@ -105,6 +147,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// Pay payment method.
         /// </summary>
         [JsonProperty("cashapp")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cashapp")]
+#endif
         public ConfirmationTokenPaymentMethodDataCashappOptions Cashapp { get; set; }
 
         /// <summary>
@@ -112,6 +157,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// CustomerBalance payment method.
         /// </summary>
         [JsonProperty("customer_balance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer_balance")]
+#endif
         public ConfirmationTokenPaymentMethodDataCustomerBalanceOptions CustomerBalance { get; set; }
 
         /// <summary>
@@ -119,6 +167,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// method.
         /// </summary>
         [JsonProperty("eps")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("eps")]
+#endif
         public ConfirmationTokenPaymentMethodDataEpsOptions Eps { get; set; }
 
         /// <summary>
@@ -126,6 +177,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// method.
         /// </summary>
         [JsonProperty("fpx")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fpx")]
+#endif
         public ConfirmationTokenPaymentMethodDataFpxOptions Fpx { get; set; }
 
         /// <summary>
@@ -133,6 +187,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// payment method.
         /// </summary>
         [JsonProperty("giropay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("giropay")]
+#endif
         public ConfirmationTokenPaymentMethodDataGiropayOptions Giropay { get; set; }
 
         /// <summary>
@@ -140,6 +197,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// payment method.
         /// </summary>
         [JsonProperty("grabpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("grabpay")]
+#endif
         public ConfirmationTokenPaymentMethodDataGrabpayOptions Grabpay { get; set; }
 
         /// <summary>
@@ -147,6 +207,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// payment method.
         /// </summary>
         [JsonProperty("ideal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ideal")]
+#endif
         public ConfirmationTokenPaymentMethodDataIdealOptions Ideal { get; set; }
 
         /// <summary>
@@ -154,6 +217,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// Interac Present payment method.
         /// </summary>
         [JsonProperty("interac_present")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interac_present")]
+#endif
         public ConfirmationTokenPaymentMethodDataInteracPresentOptions InteracPresent { get; set; }
 
         /// <summary>
@@ -161,6 +227,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// Pay payment method.
         /// </summary>
         [JsonProperty("kakao_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kakao_pay")]
+#endif
         public ConfirmationTokenPaymentMethodDataKakaoPayOptions KakaoPay { get; set; }
 
         /// <summary>
@@ -168,6 +237,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// payment method.
         /// </summary>
         [JsonProperty("klarna")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("klarna")]
+#endif
         public ConfirmationTokenPaymentMethodDataKlarnaOptions Klarna { get; set; }
 
         /// <summary>
@@ -175,6 +247,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// payment method.
         /// </summary>
         [JsonProperty("konbini")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("konbini")]
+#endif
         public ConfirmationTokenPaymentMethodDataKonbiniOptions Konbini { get; set; }
 
         /// <summary>
@@ -182,6 +257,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// Card payment method.
         /// </summary>
         [JsonProperty("kr_card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("kr_card")]
+#endif
         public ConfirmationTokenPaymentMethodDataKrCardOptions KrCard { get; set; }
 
         /// <summary>
@@ -189,6 +267,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// payment method.
         /// </summary>
         [JsonProperty("link")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("link")]
+#endif
         public ConfirmationTokenPaymentMethodDataLinkOptions Link { get; set; }
 
         /// <summary>
@@ -198,6 +279,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -205,6 +289,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// MobilePay payment method.
         /// </summary>
         [JsonProperty("mobilepay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("mobilepay")]
+#endif
         public ConfirmationTokenPaymentMethodDataMobilepayOptions Mobilepay { get; set; }
 
         /// <summary>
@@ -212,6 +299,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// Multibanco payment method.
         /// </summary>
         [JsonProperty("multibanco")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("multibanco")]
+#endif
         public ConfirmationTokenPaymentMethodDataMultibancoOptions Multibanco { get; set; }
 
         /// <summary>
@@ -219,6 +309,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// Pay payment method.
         /// </summary>
         [JsonProperty("naver_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("naver_pay")]
+#endif
         public ConfirmationTokenPaymentMethodDataNaverPayOptions NaverPay { get; set; }
 
         /// <summary>
@@ -226,6 +319,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// payment method.
         /// </summary>
         [JsonProperty("oxxo")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("oxxo")]
+#endif
         public ConfirmationTokenPaymentMethodDataOxxoOptions Oxxo { get; set; }
 
         /// <summary>
@@ -233,6 +329,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// method.
         /// </summary>
         [JsonProperty("p24")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("p24")]
+#endif
         public ConfirmationTokenPaymentMethodDataP24Options P24 { get; set; }
 
         /// <summary>
@@ -240,6 +339,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// PayByBank payment method.
         /// </summary>
         [JsonProperty("pay_by_bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pay_by_bank")]
+#endif
         public ConfirmationTokenPaymentMethodDataPayByBankOptions PayByBank { get; set; }
 
         /// <summary>
@@ -247,6 +349,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// payment method.
         /// </summary>
         [JsonProperty("payco")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payco")]
+#endif
         public ConfirmationTokenPaymentMethodDataPaycoOptions Payco { get; set; }
 
         /// <summary>
@@ -254,6 +359,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// payment method.
         /// </summary>
         [JsonProperty("paynow")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paynow")]
+#endif
         public ConfirmationTokenPaymentMethodDataPaynowOptions Paynow { get; set; }
 
         /// <summary>
@@ -261,6 +369,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// payment method.
         /// </summary>
         [JsonProperty("paypal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("paypal")]
+#endif
         public ConfirmationTokenPaymentMethodDataPaypalOptions Paypal { get; set; }
 
         /// <summary>
@@ -268,6 +379,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// method.
         /// </summary>
         [JsonProperty("pix")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pix")]
+#endif
         public ConfirmationTokenPaymentMethodDataPixOptions Pix { get; set; }
 
         /// <summary>
@@ -275,6 +389,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// PromptPay payment method.
         /// </summary>
         [JsonProperty("promptpay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("promptpay")]
+#endif
         public ConfirmationTokenPaymentMethodDataPromptpayOptions Promptpay { get; set; }
 
         /// <summary>
@@ -283,6 +400,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// information.
         /// </summary>
         [JsonProperty("radar_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("radar_options")]
+#endif
         public ConfirmationTokenPaymentMethodDataRadarOptionsOptions RadarOptions { get; set; }
 
         /// <summary>
@@ -290,6 +410,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// Revolut Pay payment method.
         /// </summary>
         [JsonProperty("revolut_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("revolut_pay")]
+#endif
         public ConfirmationTokenPaymentMethodDataRevolutPayOptions RevolutPay { get; set; }
 
         /// <summary>
@@ -297,6 +420,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// SamsungPay payment method.
         /// </summary>
         [JsonProperty("samsung_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("samsung_pay")]
+#endif
         public ConfirmationTokenPaymentMethodDataSamsungPayOptions SamsungPay { get; set; }
 
         /// <summary>
@@ -304,6 +430,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// debit bank account.
         /// </summary>
         [JsonProperty("sepa_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sepa_debit")]
+#endif
         public ConfirmationTokenPaymentMethodDataSepaDebitOptions SepaDebit { get; set; }
 
         /// <summary>
@@ -311,6 +440,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// payment method.
         /// </summary>
         [JsonProperty("sofort")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("sofort")]
+#endif
         public ConfirmationTokenPaymentMethodDataSofortOptions Sofort { get; set; }
 
         /// <summary>
@@ -318,6 +450,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// payment method.
         /// </summary>
         [JsonProperty("swish")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("swish")]
+#endif
         public ConfirmationTokenPaymentMethodDataSwishOptions Swish { get; set; }
 
         /// <summary>
@@ -325,6 +460,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// method.
         /// </summary>
         [JsonProperty("twint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("twint")]
+#endif
         public ConfirmationTokenPaymentMethodDataTwintOptions Twint { get; set; }
 
         /// <summary>
@@ -342,6 +480,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// <c>twint</c>, <c>us_bank_account</c>, <c>wechat_pay</c>, or <c>zip</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
@@ -349,6 +490,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// US bank account payment method.
         /// </summary>
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public ConfirmationTokenPaymentMethodDataUsBankAccountOptions UsBankAccount { get; set; }
 
         /// <summary>
@@ -356,6 +500,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// wechat_pay payment method.
         /// </summary>
         [JsonProperty("wechat_pay")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wechat_pay")]
+#endif
         public ConfirmationTokenPaymentMethodDataWechatPayOptions WechatPay { get; set; }
 
         /// <summary>
@@ -363,6 +510,9 @@ public class ConfirmationTokenPaymentMethodDataOptions : INestedOptions, IHasMet
         /// method.
         /// </summary>
         [JsonProperty("zip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("zip")]
+#endif
         public ConfirmationTokenPaymentMethodDataZipOptions Zip { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataP24Options.cs b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataP24Options.cs
index 3fb9735796..07f3ca9a7c 100644
--- a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataP24Options.cs
+++ b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataP24Options.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodDataP24Options : INestedOptions
     {
@@ -17,6 +20,9 @@ public class ConfirmationTokenPaymentMethodDataP24Options : INestedOptions
         /// <c>volkswagen_bank</c>.
         /// </summary>
         [JsonProperty("bank")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank")]
+#endif
         public string Bank { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataRadarOptionsOptions.cs b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataRadarOptionsOptions.cs
index e5b9e6904e..85b70501f3 100644
--- a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataRadarOptionsOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataRadarOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodDataRadarOptionsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class ConfirmationTokenPaymentMethodDataRadarOptionsOptions : INestedOpti
         /// predictions on your payments.
         /// </summary>
         [JsonProperty("session")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("session")]
+#endif
         public string Session { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataSepaDebitOptions.cs b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataSepaDebitOptions.cs
index 9b2db79a02..e8a889b368 100644
--- a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataSepaDebitOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataSepaDebitOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodDataSepaDebitOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class ConfirmationTokenPaymentMethodDataSepaDebitOptions : INestedOptions
         /// IBAN of the bank account.
         /// </summary>
         [JsonProperty("iban")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("iban")]
+#endif
         public string Iban { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataSofortOptions.cs b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataSofortOptions.cs
index 55761b7c2a..4254f4cc67 100644
--- a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataSofortOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataSofortOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodDataSofortOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class ConfirmationTokenPaymentMethodDataSofortOptions : INestedOptions
         /// One of: <c>AT</c>, <c>BE</c>, <c>DE</c>, <c>ES</c>, <c>IT</c>, or <c>NL</c>.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataUsBankAccountOptions.cs b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataUsBankAccountOptions.cs
index aaefe3b259..60c938cfd8 100644
--- a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataUsBankAccountOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenPaymentMethodDataUsBankAccountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenPaymentMethodDataUsBankAccountOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class ConfirmationTokenPaymentMethodDataUsBankAccountOptions : INestedOpt
         /// One of: <c>company</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("account_holder_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_type")]
+#endif
         public string AccountHolderType { get; set; }
 
         /// <summary>
         /// Account number of the bank account.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
@@ -23,18 +32,27 @@ public class ConfirmationTokenPaymentMethodDataUsBankAccountOptions : INestedOpt
         /// One of: <c>checking</c>, or <c>savings</c>.
         /// </summary>
         [JsonProperty("account_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_type")]
+#endif
         public string AccountType { get; set; }
 
         /// <summary>
         /// The ID of a Financial Connections Account to use as a payment method.
         /// </summary>
         [JsonProperty("financial_connections_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_connections_account")]
+#endif
         public string FinancialConnectionsAccount { get; set; }
 
         /// <summary>
         /// Routing number of the bank account.
         /// </summary>
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenService.cs b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenService.cs
index 3f69bf813b..59d5a36dfb 100644
--- a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenService.cs
+++ b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenService.cs
@@ -6,7 +6,7 @@ namespace Stripe.TestHelpers
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class ConfirmationTokenService : Service<ConfirmationToken>
+    public class ConfirmationTokenService : Service
     {
         public ConfirmationTokenService()
         {
diff --git a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenShippingOptions.cs b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenShippingOptions.cs
index cabfbbb456..91a8796406 100644
--- a/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenShippingOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/ConfirmationTokens/ConfirmationTokenShippingOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ConfirmationTokenShippingOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class ConfirmationTokenShippingOptions : INestedOptions
         /// Shipping address.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public AddressOptions Address { get; set; }
 
         /// <summary>
         /// Recipient name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// Recipient phone (including extension).
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Customers/CustomerFundCashBalanceOptions.cs b/src/Stripe.net/Services/TestHelpers/Customers/CustomerFundCashBalanceOptions.cs
index b6b3c3f772..9c1b12493a 100644
--- a/src/Stripe.net/Services/TestHelpers/Customers/CustomerFundCashBalanceOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Customers/CustomerFundCashBalanceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CustomerFundCashBalanceOptions : BaseOptions
     {
@@ -12,6 +15,9 @@ public class CustomerFundCashBalanceOptions : BaseOptions
         /// 100 cents to fund $1.00 or 100 to fund ¥100, a zero-decimal currency).
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class CustomerFundCashBalanceOptions : BaseOptions
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -30,6 +39,9 @@ public class CustomerFundCashBalanceOptions : BaseOptions
         /// algorithm</a> applies to different user inputs.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Customers/CustomerService.cs b/src/Stripe.net/Services/TestHelpers/Customers/CustomerService.cs
index 2fdca35bbc..fa9546db09 100644
--- a/src/Stripe.net/Services/TestHelpers/Customers/CustomerService.cs
+++ b/src/Stripe.net/Services/TestHelpers/Customers/CustomerService.cs
@@ -7,7 +7,7 @@ namespace Stripe.TestHelpers
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class CustomerService : Service<Customer>
+    public class CustomerService : Service
     {
         public CustomerService()
         {
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationAmountDetailsOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationAmountDetailsOptions.cs
index aa3a3cba20..9b8dde81fe 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationAmountDetailsOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationAmountDetailsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationAmountDetailsOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class AuthorizationAmountDetailsOptions : INestedOptions
         /// The ATM withdrawal fee.
         /// </summary>
         [JsonProperty("atm_fee")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("atm_fee")]
+#endif
         public long? AtmFee { get; set; }
 
         /// <summary>
         /// The amount of cash requested by the cardholder.
         /// </summary>
         [JsonProperty("cashback_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cashback_amount")]
+#endif
         public long? CashbackAmount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationCaptureOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationCaptureOptions.cs
index 095a01cfb8..e335f00850 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationCaptureOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationCaptureOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationCaptureOptions : BaseOptions
     {
@@ -11,6 +14,9 @@ public class AuthorizationCaptureOptions : BaseOptions
         /// <a href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("capture_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("capture_amount")]
+#endif
         public long? CaptureAmount { get; set; }
 
         /// <summary>
@@ -18,12 +24,18 @@ public class AuthorizationCaptureOptions : BaseOptions
         /// enable multi-capture flows.
         /// </summary>
         [JsonProperty("close_authorization")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("close_authorization")]
+#endif
         public bool? CloseAuthorization { get; set; }
 
         /// <summary>
         /// Additional purchase information that is optionally provided by the merchant.
         /// </summary>
         [JsonProperty("purchase_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("purchase_details")]
+#endif
         public AuthorizationPurchaseDetailsOptions PurchaseDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationCreateOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationCreateOptions.cs
index 595664a532..4b528b0653 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationCreateOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationCreateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationCreateOptions : BaseOptions
     {
@@ -11,6 +14,9 @@ public class AuthorizationCreateOptions : BaseOptions
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class AuthorizationCreateOptions : BaseOptions
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("amount_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_details")]
+#endif
         public AuthorizationAmountDetailsOptions AmountDetails { get; set; }
 
         /// <summary>
@@ -27,12 +36,18 @@ public class AuthorizationCreateOptions : BaseOptions
         /// <c>swipe</c>.
         /// </summary>
         [JsonProperty("authorization_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("authorization_method")]
+#endif
         public string AuthorizationMethod { get; set; }
 
         /// <summary>
         /// Card associated with this authorization.
         /// </summary>
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public string Card { get; set; }
 
         /// <summary>
@@ -42,18 +57,27 @@ public class AuthorizationCreateOptions : BaseOptions
         /// href="https://stripe.com/docs/currencies">supported currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// Fleet-specific information for authorizations using Fleet cards.
         /// </summary>
         [JsonProperty("fleet")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fleet")]
+#endif
         public AuthorizationFleetOptions Fleet { get; set; }
 
         /// <summary>
         /// Information about fuel that was purchased with this transaction.
         /// </summary>
         [JsonProperty("fuel")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fuel")]
+#endif
         public AuthorizationFuelOptions Fuel { get; set; }
 
         /// <summary>
@@ -62,6 +86,9 @@ public class AuthorizationCreateOptions : BaseOptions
         /// to control how much to hold for the authorization.
         /// </summary>
         [JsonProperty("is_amount_controllable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("is_amount_controllable")]
+#endif
         public bool? IsAmountControllable { get; set; }
 
         /// <summary>
@@ -70,6 +97,9 @@ public class AuthorizationCreateOptions : BaseOptions
         /// currency unit</a>.
         /// </summary>
         [JsonProperty("merchant_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("merchant_amount")]
+#endif
         public long? MerchantAmount { get; set; }
 
         /// <summary>
@@ -79,6 +109,9 @@ public class AuthorizationCreateOptions : BaseOptions
         /// href="https://stripe.com/docs/currencies">supported currency</a>.
         /// </summary>
         [JsonProperty("merchant_currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("merchant_currency")]
+#endif
         public string MerchantCurrency { get; set; }
 
         /// <summary>
@@ -86,12 +119,18 @@ public class AuthorizationCreateOptions : BaseOptions
         /// authorization happened.
         /// </summary>
         [JsonProperty("merchant_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("merchant_data")]
+#endif
         public AuthorizationMerchantDataOptions MerchantData { get; set; }
 
         /// <summary>
         /// Details about the authorization, such as identifiers, set by the card network.
         /// </summary>
         [JsonProperty("network_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network_data")]
+#endif
         public AuthorizationNetworkDataOptions NetworkData { get; set; }
 
         /// <summary>
@@ -99,6 +138,9 @@ public class AuthorizationCreateOptions : BaseOptions
         /// merchant.
         /// </summary>
         [JsonProperty("verification_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification_data")]
+#endif
         public AuthorizationVerificationDataOptions VerificationData { get; set; }
 
         /// <summary>
@@ -108,6 +150,9 @@ public class AuthorizationCreateOptions : BaseOptions
         /// One of: <c>apple_pay</c>, <c>google_pay</c>, or <c>samsung_pay</c>.
         /// </summary>
         [JsonProperty("wallet")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("wallet")]
+#endif
         public string Wallet { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFinalizeAmountOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFinalizeAmountOptions.cs
index 557fb3d3c8..528f863ca4 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFinalizeAmountOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFinalizeAmountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationFinalizeAmountOptions : BaseOptions
     {
@@ -11,18 +14,27 @@ public class AuthorizationFinalizeAmountOptions : BaseOptions
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("final_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("final_amount")]
+#endif
         public long? FinalAmount { get; set; }
 
         /// <summary>
         /// Fleet-specific information for authorizations using Fleet cards.
         /// </summary>
         [JsonProperty("fleet")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fleet")]
+#endif
         public AuthorizationFleetOptions Fleet { get; set; }
 
         /// <summary>
         /// Information about fuel that was purchased with this transaction.
         /// </summary>
         [JsonProperty("fuel")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fuel")]
+#endif
         public AuthorizationFuelOptions Fuel { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFleetCardholderPromptDataOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFleetCardholderPromptDataOptions.cs
index e7ee73dbf8..6de059b12c 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFleetCardholderPromptDataOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFleetCardholderPromptDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationFleetCardholderPromptDataOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class AuthorizationFleetCardholderPromptDataOptions : INestedOptions
         /// Driver ID.
         /// </summary>
         [JsonProperty("driver_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("driver_id")]
+#endif
         public string DriverId { get; set; }
 
         /// <summary>
         /// Odometer reading.
         /// </summary>
         [JsonProperty("odometer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("odometer")]
+#endif
         public long? Odometer { get; set; }
 
         /// <summary>
@@ -23,18 +32,27 @@ public class AuthorizationFleetCardholderPromptDataOptions : INestedOptions
         /// type.
         /// </summary>
         [JsonProperty("unspecified_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unspecified_id")]
+#endif
         public string UnspecifiedId { get; set; }
 
         /// <summary>
         /// User ID.
         /// </summary>
         [JsonProperty("user_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_id")]
+#endif
         public string UserId { get; set; }
 
         /// <summary>
         /// Vehicle number.
         /// </summary>
         [JsonProperty("vehicle_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("vehicle_number")]
+#endif
         public string VehicleNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFleetOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFleetOptions.cs
index 4f4dac6366..c31cbc23bf 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFleetOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFleetOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationFleetOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AuthorizationFleetOptions : INestedOptions
         /// support only numeric entry.
         /// </summary>
         [JsonProperty("cardholder_prompt_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder_prompt_data")]
+#endif
         public AuthorizationFleetCardholderPromptDataOptions CardholderPromptData { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class AuthorizationFleetOptions : INestedOptions
         /// <c>non_fuel_purchase</c>.
         /// </summary>
         [JsonProperty("purchase_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("purchase_type")]
+#endif
         public string PurchaseType { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class AuthorizationFleetOptions : INestedOptions
         /// accurate as some merchants may provide unreliable data.
         /// </summary>
         [JsonProperty("reported_breakdown")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reported_breakdown")]
+#endif
         public AuthorizationFleetReportedBreakdownOptions ReportedBreakdown { get; set; }
 
         /// <summary>
@@ -35,6 +47,9 @@ public class AuthorizationFleetOptions : INestedOptions
         /// One of: <c>full_service</c>, <c>non_fuel_transaction</c>, or <c>self_service</c>.
         /// </summary>
         [JsonProperty("service_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("service_type")]
+#endif
         public string ServiceType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFleetReportedBreakdownFuelOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFleetReportedBreakdownFuelOptions.cs
index cf7c230336..d7343afeff 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFleetReportedBreakdownFuelOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFleetReportedBreakdownFuelOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationFleetReportedBreakdownFuelOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class AuthorizationFleetReportedBreakdownFuelOptions : INestedOptions
         /// of taxes.
         /// </summary>
         [JsonProperty("gross_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gross_amount_decimal")]
+#endif
         public decimal? GrossAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFleetReportedBreakdownNonFuelOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFleetReportedBreakdownNonFuelOptions.cs
index 21879227b3..a958a818f0 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFleetReportedBreakdownNonFuelOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFleetReportedBreakdownNonFuelOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationFleetReportedBreakdownNonFuelOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class AuthorizationFleetReportedBreakdownNonFuelOptions : INestedOptions
         /// Gross non-fuel amount that should equal the sum of the line items, inclusive of taxes.
         /// </summary>
         [JsonProperty("gross_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gross_amount_decimal")]
+#endif
         public decimal? GrossAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFleetReportedBreakdownOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFleetReportedBreakdownOptions.cs
index 2cd09d452f..a81a232f7c 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFleetReportedBreakdownOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFleetReportedBreakdownOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationFleetReportedBreakdownOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class AuthorizationFleetReportedBreakdownOptions : INestedOptions
         /// Breakdown of fuel portion of the purchase.
         /// </summary>
         [JsonProperty("fuel")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fuel")]
+#endif
         public AuthorizationFleetReportedBreakdownFuelOptions Fuel { get; set; }
 
         /// <summary>
         /// Breakdown of non-fuel portion of the purchase.
         /// </summary>
         [JsonProperty("non_fuel")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("non_fuel")]
+#endif
         public AuthorizationFleetReportedBreakdownNonFuelOptions NonFuel { get; set; }
 
         /// <summary>
         /// Information about tax included in this transaction.
         /// </summary>
         [JsonProperty("tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax")]
+#endif
         public AuthorizationFleetReportedBreakdownTaxOptions Tax { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFleetReportedBreakdownTaxOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFleetReportedBreakdownTaxOptions.cs
index 07912d6f19..31f3e20d49 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFleetReportedBreakdownTaxOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFleetReportedBreakdownTaxOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationFleetReportedBreakdownTaxOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class AuthorizationFleetReportedBreakdownTaxOptions : INestedOptions
         /// reported by merchant or not subject to tax.
         /// </summary>
         [JsonProperty("local_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("local_amount_decimal")]
+#endif
         public decimal? LocalAmountDecimal { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class AuthorizationFleetReportedBreakdownTaxOptions : INestedOptions
         /// reported by merchant or not subject to tax.
         /// </summary>
         [JsonProperty("national_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("national_amount_decimal")]
+#endif
         public decimal? NationalAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFuelOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFuelOptions.cs
index 7816d04ed9..d76962e91b 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFuelOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationFuelOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationFuelOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class AuthorizationFuelOptions : INestedOptions
         /// Payment System Product Code</a> identifying the primary fuel product purchased.
         /// </summary>
         [JsonProperty("industry_product_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("industry_product_code")]
+#endif
         public string IndustryProductCode { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class AuthorizationFuelOptions : INestedOptions
         /// with at most 12 decimal places.
         /// </summary>
         [JsonProperty("quantity_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity_decimal")]
+#endif
         public decimal? QuantityDecimal { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class AuthorizationFuelOptions : INestedOptions
         /// <c>unleaded_super</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
@@ -36,6 +48,9 @@ public class AuthorizationFuelOptions : INestedOptions
         /// <c>kilowatt_hour</c>, <c>liter</c>, <c>other</c>, <c>pound</c>, or <c>us_gallon</c>.
         /// </summary>
         [JsonProperty("unit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit")]
+#endif
         public string Unit { get; set; }
 
         /// <summary>
@@ -43,6 +58,9 @@ public class AuthorizationFuelOptions : INestedOptions
         /// decimal places.
         /// </summary>
         [JsonProperty("unit_cost_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_cost_decimal")]
+#endif
         public decimal? UnitCostDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationIncrementOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationIncrementOptions.cs
index 374c7a2d6e..1670f8e4ae 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationIncrementOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationIncrementOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationIncrementOptions : BaseOptions
     {
@@ -11,6 +14,9 @@ public class AuthorizationIncrementOptions : BaseOptions
         /// currency unit</a>.
         /// </summary>
         [JsonProperty("increment_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("increment_amount")]
+#endif
         public long? IncrementAmount { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class AuthorizationIncrementOptions : BaseOptions
         /// to control how much to hold for the authorization.
         /// </summary>
         [JsonProperty("is_amount_controllable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("is_amount_controllable")]
+#endif
         public bool? IsAmountControllable { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationMerchantDataOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationMerchantDataOptions.cs
index 7253a177b8..761ab5c9ab 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationMerchantDataOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationMerchantDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationMerchantDataOptions : INestedOptions
     {
@@ -156,24 +159,36 @@ public class AuthorizationMerchantDataOptions : INestedOptions
         /// <c>wrecking_and_salvage_yards</c>.
         /// </summary>
         [JsonProperty("category")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("category")]
+#endif
         public string Category { get; set; }
 
         /// <summary>
         /// City where the seller is located.
         /// </summary>
         [JsonProperty("city")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("city")]
+#endif
         public string City { get; set; }
 
         /// <summary>
         /// Country where the seller is located.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
         /// Name of the seller.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -181,30 +196,45 @@ public class AuthorizationMerchantDataOptions : INestedOptions
         /// assign different network_id fields to the same merchant.
         /// </summary>
         [JsonProperty("network_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network_id")]
+#endif
         public string NetworkId { get; set; }
 
         /// <summary>
         /// Postal code where the seller is located.
         /// </summary>
         [JsonProperty("postal_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("postal_code")]
+#endif
         public string PostalCode { get; set; }
 
         /// <summary>
         /// State where the seller is located.
         /// </summary>
         [JsonProperty("state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("state")]
+#endif
         public string State { get; set; }
 
         /// <summary>
         /// An ID assigned by the seller to the location of the sale.
         /// </summary>
         [JsonProperty("terminal_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("terminal_id")]
+#endif
         public string TerminalId { get; set; }
 
         /// <summary>
         /// URL provided by the merchant on a 3DS request.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationNetworkDataOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationNetworkDataOptions.cs
index 603bb837ab..c9db7e7aff 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationNetworkDataOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationNetworkDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationNetworkDataOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class AuthorizationNetworkDataOptions : INestedOptions
         /// Identifier assigned to the acquirer by the card network.
         /// </summary>
         [JsonProperty("acquiring_institution_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("acquiring_institution_id")]
+#endif
         public string AcquiringInstitutionId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFleetCardholderPromptDataOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFleetCardholderPromptDataOptions.cs
index 8972f30cf9..1a2d0359e8 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFleetCardholderPromptDataOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFleetCardholderPromptDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationPurchaseDetailsFleetCardholderPromptDataOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class AuthorizationPurchaseDetailsFleetCardholderPromptDataOptions : INes
         /// Driver ID.
         /// </summary>
         [JsonProperty("driver_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("driver_id")]
+#endif
         public string DriverId { get; set; }
 
         /// <summary>
         /// Odometer reading.
         /// </summary>
         [JsonProperty("odometer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("odometer")]
+#endif
         public long? Odometer { get; set; }
 
         /// <summary>
@@ -23,18 +32,27 @@ public class AuthorizationPurchaseDetailsFleetCardholderPromptDataOptions : INes
         /// type.
         /// </summary>
         [JsonProperty("unspecified_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unspecified_id")]
+#endif
         public string UnspecifiedId { get; set; }
 
         /// <summary>
         /// User ID.
         /// </summary>
         [JsonProperty("user_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_id")]
+#endif
         public string UserId { get; set; }
 
         /// <summary>
         /// Vehicle number.
         /// </summary>
         [JsonProperty("vehicle_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("vehicle_number")]
+#endif
         public string VehicleNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFleetOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFleetOptions.cs
index 7288652f1d..7268ccadb2 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFleetOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFleetOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationPurchaseDetailsFleetOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AuthorizationPurchaseDetailsFleetOptions : INestedOptions
         /// support only numeric entry.
         /// </summary>
         [JsonProperty("cardholder_prompt_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder_prompt_data")]
+#endif
         public AuthorizationPurchaseDetailsFleetCardholderPromptDataOptions CardholderPromptData { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class AuthorizationPurchaseDetailsFleetOptions : INestedOptions
         /// <c>non_fuel_purchase</c>.
         /// </summary>
         [JsonProperty("purchase_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("purchase_type")]
+#endif
         public string PurchaseType { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class AuthorizationPurchaseDetailsFleetOptions : INestedOptions
         /// accurate as some merchants may provide unreliable data.
         /// </summary>
         [JsonProperty("reported_breakdown")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reported_breakdown")]
+#endif
         public AuthorizationPurchaseDetailsFleetReportedBreakdownOptions ReportedBreakdown { get; set; }
 
         /// <summary>
@@ -35,6 +47,9 @@ public class AuthorizationPurchaseDetailsFleetOptions : INestedOptions
         /// One of: <c>full_service</c>, <c>non_fuel_transaction</c>, or <c>self_service</c>.
         /// </summary>
         [JsonProperty("service_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("service_type")]
+#endif
         public string ServiceType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFleetReportedBreakdownFuelOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFleetReportedBreakdownFuelOptions.cs
index f52fb90d31..e346729552 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFleetReportedBreakdownFuelOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFleetReportedBreakdownFuelOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationPurchaseDetailsFleetReportedBreakdownFuelOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class AuthorizationPurchaseDetailsFleetReportedBreakdownFuelOptions : INe
         /// of taxes.
         /// </summary>
         [JsonProperty("gross_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gross_amount_decimal")]
+#endif
         public decimal? GrossAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFleetReportedBreakdownNonFuelOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFleetReportedBreakdownNonFuelOptions.cs
index 1939881a4b..064c0293c5 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFleetReportedBreakdownNonFuelOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFleetReportedBreakdownNonFuelOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationPurchaseDetailsFleetReportedBreakdownNonFuelOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class AuthorizationPurchaseDetailsFleetReportedBreakdownNonFuelOptions :
         /// Gross non-fuel amount that should equal the sum of the line items, inclusive of taxes.
         /// </summary>
         [JsonProperty("gross_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gross_amount_decimal")]
+#endif
         public decimal? GrossAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFleetReportedBreakdownOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFleetReportedBreakdownOptions.cs
index 1b2254e308..abd4c4cd09 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFleetReportedBreakdownOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFleetReportedBreakdownOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationPurchaseDetailsFleetReportedBreakdownOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class AuthorizationPurchaseDetailsFleetReportedBreakdownOptions : INested
         /// Breakdown of fuel portion of the purchase.
         /// </summary>
         [JsonProperty("fuel")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fuel")]
+#endif
         public AuthorizationPurchaseDetailsFleetReportedBreakdownFuelOptions Fuel { get; set; }
 
         /// <summary>
         /// Breakdown of non-fuel portion of the purchase.
         /// </summary>
         [JsonProperty("non_fuel")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("non_fuel")]
+#endif
         public AuthorizationPurchaseDetailsFleetReportedBreakdownNonFuelOptions NonFuel { get; set; }
 
         /// <summary>
         /// Information about tax included in this transaction.
         /// </summary>
         [JsonProperty("tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax")]
+#endif
         public AuthorizationPurchaseDetailsFleetReportedBreakdownTaxOptions Tax { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFleetReportedBreakdownTaxOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFleetReportedBreakdownTaxOptions.cs
index 688bcf444c..ebdfefd57b 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFleetReportedBreakdownTaxOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFleetReportedBreakdownTaxOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationPurchaseDetailsFleetReportedBreakdownTaxOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class AuthorizationPurchaseDetailsFleetReportedBreakdownTaxOptions : INes
         /// reported by merchant or not subject to tax.
         /// </summary>
         [JsonProperty("local_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("local_amount_decimal")]
+#endif
         public decimal? LocalAmountDecimal { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class AuthorizationPurchaseDetailsFleetReportedBreakdownTaxOptions : INes
         /// reported by merchant or not subject to tax.
         /// </summary>
         [JsonProperty("national_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("national_amount_decimal")]
+#endif
         public decimal? NationalAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFlightOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFlightOptions.cs
index 3f50b45967..e88431a53a 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFlightOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFlightOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe.TestHelpers.Issuing
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationPurchaseDetailsFlightOptions : INestedOptions
     {
@@ -13,30 +16,46 @@ public class AuthorizationPurchaseDetailsFlightOptions : INestedOptions
         /// </summary>
         [JsonProperty("departure_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("departure_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? DepartureAt { get; set; }
 
         /// <summary>
         /// The name of the passenger.
         /// </summary>
         [JsonProperty("passenger_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("passenger_name")]
+#endif
         public string PassengerName { get; set; }
 
         /// <summary>
         /// Whether the ticket is refundable.
         /// </summary>
         [JsonProperty("refundable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refundable")]
+#endif
         public bool? Refundable { get; set; }
 
         /// <summary>
         /// The legs of the trip.
         /// </summary>
         [JsonProperty("segments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("segments")]
+#endif
         public List<AuthorizationPurchaseDetailsFlightSegmentOptions> Segments { get; set; }
 
         /// <summary>
         /// The travel agency that issued the ticket.
         /// </summary>
         [JsonProperty("travel_agency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("travel_agency")]
+#endif
         public string TravelAgency { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFlightSegmentOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFlightSegmentOptions.cs
index 5ce6c24e1f..c73aba3d6c 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFlightSegmentOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFlightSegmentOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationPurchaseDetailsFlightSegmentOptions : INestedOptions
     {
@@ -9,36 +12,54 @@ public class AuthorizationPurchaseDetailsFlightSegmentOptions : INestedOptions
         /// The three-letter IATA airport code of the flight's destination.
         /// </summary>
         [JsonProperty("arrival_airport_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("arrival_airport_code")]
+#endif
         public string ArrivalAirportCode { get; set; }
 
         /// <summary>
         /// The airline carrier code.
         /// </summary>
         [JsonProperty("carrier")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("carrier")]
+#endif
         public string Carrier { get; set; }
 
         /// <summary>
         /// The three-letter IATA airport code that the flight departed from.
         /// </summary>
         [JsonProperty("departure_airport_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("departure_airport_code")]
+#endif
         public string DepartureAirportCode { get; set; }
 
         /// <summary>
         /// The flight number.
         /// </summary>
         [JsonProperty("flight_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flight_number")]
+#endif
         public string FlightNumber { get; set; }
 
         /// <summary>
         /// The flight's service class.
         /// </summary>
         [JsonProperty("service_class")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("service_class")]
+#endif
         public string ServiceClass { get; set; }
 
         /// <summary>
         /// Whether a stopover is allowed on this flight.
         /// </summary>
         [JsonProperty("stopover_allowed")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("stopover_allowed")]
+#endif
         public bool? StopoverAllowed { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFuelOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFuelOptions.cs
index ed559d4c05..0b19a68257 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFuelOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsFuelOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationPurchaseDetailsFuelOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class AuthorizationPurchaseDetailsFuelOptions : INestedOptions
         /// Payment System Product Code</a> identifying the primary fuel product purchased.
         /// </summary>
         [JsonProperty("industry_product_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("industry_product_code")]
+#endif
         public string IndustryProductCode { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class AuthorizationPurchaseDetailsFuelOptions : INestedOptions
         /// with at most 12 decimal places.
         /// </summary>
         [JsonProperty("quantity_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity_decimal")]
+#endif
         public decimal? QuantityDecimal { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class AuthorizationPurchaseDetailsFuelOptions : INestedOptions
         /// <c>unleaded_super</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
@@ -36,6 +48,9 @@ public class AuthorizationPurchaseDetailsFuelOptions : INestedOptions
         /// <c>kilowatt_hour</c>, <c>liter</c>, <c>other</c>, <c>pound</c>, or <c>us_gallon</c>.
         /// </summary>
         [JsonProperty("unit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit")]
+#endif
         public string Unit { get; set; }
 
         /// <summary>
@@ -43,6 +58,9 @@ public class AuthorizationPurchaseDetailsFuelOptions : INestedOptions
         /// decimal places.
         /// </summary>
         [JsonProperty("unit_cost_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_cost_decimal")]
+#endif
         public decimal? UnitCostDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsLodgingOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsLodgingOptions.cs
index 2c2016e57b..d4a429bb05 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsLodgingOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsLodgingOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe.TestHelpers.Issuing
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationPurchaseDetailsLodgingOptions : INestedOptions
     {
@@ -12,12 +15,19 @@ public class AuthorizationPurchaseDetailsLodgingOptions : INestedOptions
         /// </summary>
         [JsonProperty("check_in_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("check_in_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? CheckInAt { get; set; }
 
         /// <summary>
         /// The number of nights stayed at the lodging.
         /// </summary>
         [JsonProperty("nights")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("nights")]
+#endif
         public long? Nights { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsOptions.cs
index b044e6385d..86fee52e2a 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.TestHelpers.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationPurchaseDetailsOptions : INestedOptions
     {
@@ -10,36 +13,54 @@ public class AuthorizationPurchaseDetailsOptions : INestedOptions
         /// Fleet-specific information for transactions using Fleet cards.
         /// </summary>
         [JsonProperty("fleet")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fleet")]
+#endif
         public AuthorizationPurchaseDetailsFleetOptions Fleet { get; set; }
 
         /// <summary>
         /// Information about the flight that was purchased with this transaction.
         /// </summary>
         [JsonProperty("flight")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flight")]
+#endif
         public AuthorizationPurchaseDetailsFlightOptions Flight { get; set; }
 
         /// <summary>
         /// Information about fuel that was purchased with this transaction.
         /// </summary>
         [JsonProperty("fuel")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fuel")]
+#endif
         public AuthorizationPurchaseDetailsFuelOptions Fuel { get; set; }
 
         /// <summary>
         /// Information about lodging that was purchased with this transaction.
         /// </summary>
         [JsonProperty("lodging")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lodging")]
+#endif
         public AuthorizationPurchaseDetailsLodgingOptions Lodging { get; set; }
 
         /// <summary>
         /// The line items in the purchase.
         /// </summary>
         [JsonProperty("receipt")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("receipt")]
+#endif
         public List<AuthorizationPurchaseDetailsReceiptOptions> Receipt { get; set; }
 
         /// <summary>
         /// A merchant-specific order number.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsReceiptOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsReceiptOptions.cs
index 29f195b553..5a37623ede 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsReceiptOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationPurchaseDetailsReceiptOptions.cs
@@ -2,19 +2,34 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationPurchaseDetailsReceiptOptions : INestedOptions
     {
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public decimal? Quantity { get; set; }
 
         [JsonProperty("total")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("total")]
+#endif
         public long? Total { get; set; }
 
         [JsonProperty("unit_cost")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_cost")]
+#endif
         public long? UnitCost { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationRespondOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationRespondOptions.cs
index 119b66af64..246aa5917a 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationRespondOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationRespondOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationRespondOptions : BaseOptions
     {
@@ -10,6 +13,9 @@ public class AuthorizationRespondOptions : BaseOptions
         /// telling Stripe that it was fraudulent (false).
         /// </summary>
         [JsonProperty("confirmed")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("confirmed")]
+#endif
         public bool? Confirmed { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationReverseOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationReverseOptions.cs
index 1ebed36d95..4c1819ac0b 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationReverseOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationReverseOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationReverseOptions : BaseOptions
     {
@@ -11,6 +14,9 @@ public class AuthorizationReverseOptions : BaseOptions
         /// <a href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("reverse_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reverse_amount")]
+#endif
         public long? ReverseAmount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationService.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationService.cs
index b7cca46474..10dea7d23a 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationService.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationService.cs
@@ -8,7 +8,7 @@ namespace Stripe.TestHelpers.Issuing
     using System.Threading.Tasks;
     using Stripe.Issuing;
 
-    public class AuthorizationService : Service<Stripe.Issuing.Authorization>
+    public class AuthorizationService : Service
     {
         public AuthorizationService()
         {
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationVerificationDataAuthenticationExemptionOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationVerificationDataAuthenticationExemptionOptions.cs
index 067afafca7..b860a56e83 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationVerificationDataAuthenticationExemptionOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationVerificationDataAuthenticationExemptionOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationVerificationDataAuthenticationExemptionOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AuthorizationVerificationDataAuthenticationExemptionOptions : INest
         /// One of: <c>acquirer</c>, or <c>issuer</c>.
         /// </summary>
         [JsonProperty("claimed_by")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("claimed_by")]
+#endif
         public string ClaimedBy { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class AuthorizationVerificationDataAuthenticationExemptionOptions : INest
         /// <c>unknown</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationVerificationDataOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationVerificationDataOptions.cs
index 87223456bf..ed845b458a 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationVerificationDataOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationVerificationDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationVerificationDataOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AuthorizationVerificationDataOptions : INestedOptions
         /// One of: <c>match</c>, <c>mismatch</c>, or <c>not_provided</c>.
         /// </summary>
         [JsonProperty("address_line1_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_line1_check")]
+#endif
         public string AddressLine1Check { get; set; }
 
         /// <summary>
@@ -19,12 +25,18 @@ public class AuthorizationVerificationDataOptions : INestedOptions
         /// One of: <c>match</c>, <c>mismatch</c>, or <c>not_provided</c>.
         /// </summary>
         [JsonProperty("address_postal_code_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_postal_code_check")]
+#endif
         public string AddressPostalCodeCheck { get; set; }
 
         /// <summary>
         /// The exemption applied to this authorization.
         /// </summary>
         [JsonProperty("authentication_exemption")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("authentication_exemption")]
+#endif
         public AuthorizationVerificationDataAuthenticationExemptionOptions AuthenticationExemption { get; set; }
 
         /// <summary>
@@ -32,6 +44,9 @@ public class AuthorizationVerificationDataOptions : INestedOptions
         /// One of: <c>match</c>, <c>mismatch</c>, or <c>not_provided</c>.
         /// </summary>
         [JsonProperty("cvc_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cvc_check")]
+#endif
         public string CvcCheck { get; set; }
 
         /// <summary>
@@ -39,12 +54,18 @@ public class AuthorizationVerificationDataOptions : INestedOptions
         /// One of: <c>match</c>, <c>mismatch</c>, or <c>not_provided</c>.
         /// </summary>
         [JsonProperty("expiry_check")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expiry_check")]
+#endif
         public string ExpiryCheck { get; set; }
 
         /// <summary>
         /// 3D Secure details.
         /// </summary>
         [JsonProperty("three_d_secure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("three_d_secure")]
+#endif
         public AuthorizationVerificationDataThreeDSecureOptions ThreeDSecure { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationVerificationDataThreeDSecureOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationVerificationDataThreeDSecureOptions.cs
index 58171dc976..709fe55c69 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationVerificationDataThreeDSecureOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Authorizations/AuthorizationVerificationDataThreeDSecureOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AuthorizationVerificationDataThreeDSecureOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class AuthorizationVerificationDataThreeDSecureOptions : INestedOptions
         /// <c>required</c>.
         /// </summary>
         [JsonProperty("result")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("result")]
+#endif
         public string Result { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Cards/CardService.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Cards/CardService.cs
index b23758c567..b6c98dfcf9 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Cards/CardService.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Cards/CardService.cs
@@ -8,7 +8,7 @@ namespace Stripe.TestHelpers.Issuing
     using System.Threading.Tasks;
     using Stripe.Issuing;
 
-    public class CardService : Service<Stripe.Issuing.Card>
+    public class CardService : Service
     {
         public CardService()
         {
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/PersonalizationDesigns/PersonalizationDesignRejectOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/PersonalizationDesigns/PersonalizationDesignRejectOptions.cs
index 10c5a51548..52fdcf557f 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/PersonalizationDesigns/PersonalizationDesignRejectOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/PersonalizationDesigns/PersonalizationDesignRejectOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PersonalizationDesignRejectOptions : BaseOptions
     {
@@ -9,6 +12,9 @@ public class PersonalizationDesignRejectOptions : BaseOptions
         /// The reason(s) the personalization design was rejected.
         /// </summary>
         [JsonProperty("rejection_reasons")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("rejection_reasons")]
+#endif
         public PersonalizationDesignRejectionReasonsOptions RejectionReasons { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/PersonalizationDesigns/PersonalizationDesignRejectionReasonsOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/PersonalizationDesigns/PersonalizationDesignRejectionReasonsOptions.cs
index 25c3f1ff70..6588b51045 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/PersonalizationDesigns/PersonalizationDesignRejectionReasonsOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/PersonalizationDesigns/PersonalizationDesignRejectionReasonsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.TestHelpers.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class PersonalizationDesignRejectionReasonsOptions : INestedOptions
     {
@@ -13,6 +16,9 @@ public class PersonalizationDesignRejectionReasonsOptions : INestedOptions
         /// <c>promotional_material</c>.
         /// </summary>
         [JsonProperty("card_logo")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_logo")]
+#endif
         public List<string> CardLogo { get; set; }
 
         /// <summary>
@@ -22,6 +28,9 @@ public class PersonalizationDesignRejectionReasonsOptions : INestedOptions
         /// <c>promotional_material</c>.
         /// </summary>
         [JsonProperty("carrier_text")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("carrier_text")]
+#endif
         public List<string> CarrierText { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/PersonalizationDesigns/PersonalizationDesignService.cs b/src/Stripe.net/Services/TestHelpers/Issuing/PersonalizationDesigns/PersonalizationDesignService.cs
index afb4cf592c..90072d4832 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/PersonalizationDesigns/PersonalizationDesignService.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/PersonalizationDesigns/PersonalizationDesignService.cs
@@ -8,7 +8,7 @@ namespace Stripe.TestHelpers.Issuing
     using System.Threading.Tasks;
     using Stripe.Issuing;
 
-    public class PersonalizationDesignService : Service<Stripe.Issuing.PersonalizationDesign>
+    public class PersonalizationDesignService : Service
     {
         public PersonalizationDesignService()
         {
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionCreateForceCaptureOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionCreateForceCaptureOptions.cs
index c92bf117c4..6daa346d3c 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionCreateForceCaptureOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionCreateForceCaptureOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionCreateForceCaptureOptions : BaseOptions
     {
@@ -11,12 +14,18 @@ public class TransactionCreateForceCaptureOptions : BaseOptions
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
         /// Card associated with this transaction.
         /// </summary>
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public string Card { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class TransactionCreateForceCaptureOptions : BaseOptions
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -33,12 +45,18 @@ public class TransactionCreateForceCaptureOptions : BaseOptions
         /// authorization happened.
         /// </summary>
         [JsonProperty("merchant_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("merchant_data")]
+#endif
         public TransactionMerchantDataOptions MerchantData { get; set; }
 
         /// <summary>
         /// Additional purchase information that is optionally provided by the merchant.
         /// </summary>
         [JsonProperty("purchase_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("purchase_details")]
+#endif
         public TransactionPurchaseDetailsOptions PurchaseDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionCreateUnlinkedRefundOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionCreateUnlinkedRefundOptions.cs
index d67c59bd54..e5bd8d6d96 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionCreateUnlinkedRefundOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionCreateUnlinkedRefundOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionCreateUnlinkedRefundOptions : BaseOptions
     {
@@ -11,12 +14,18 @@ public class TransactionCreateUnlinkedRefundOptions : BaseOptions
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
         /// Card associated with this unlinked refund transaction.
         /// </summary>
         [JsonProperty("card")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+#endif
         public string Card { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class TransactionCreateUnlinkedRefundOptions : BaseOptions
         /// href="https://stripe.com/docs/currencies">supported currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -33,12 +45,18 @@ public class TransactionCreateUnlinkedRefundOptions : BaseOptions
         /// authorization happened.
         /// </summary>
         [JsonProperty("merchant_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("merchant_data")]
+#endif
         public TransactionMerchantDataOptions MerchantData { get; set; }
 
         /// <summary>
         /// Additional purchase information that is optionally provided by the merchant.
         /// </summary>
         [JsonProperty("purchase_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("purchase_details")]
+#endif
         public TransactionPurchaseDetailsOptions PurchaseDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionMerchantDataOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionMerchantDataOptions.cs
index 32ab2e59f4..c8b5db4748 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionMerchantDataOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionMerchantDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionMerchantDataOptions : INestedOptions
     {
@@ -156,24 +159,36 @@ public class TransactionMerchantDataOptions : INestedOptions
         /// <c>wrecking_and_salvage_yards</c>.
         /// </summary>
         [JsonProperty("category")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("category")]
+#endif
         public string Category { get; set; }
 
         /// <summary>
         /// City where the seller is located.
         /// </summary>
         [JsonProperty("city")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("city")]
+#endif
         public string City { get; set; }
 
         /// <summary>
         /// Country where the seller is located.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
         /// Name of the seller.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
@@ -181,30 +196,45 @@ public class TransactionMerchantDataOptions : INestedOptions
         /// assign different network_id fields to the same merchant.
         /// </summary>
         [JsonProperty("network_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network_id")]
+#endif
         public string NetworkId { get; set; }
 
         /// <summary>
         /// Postal code where the seller is located.
         /// </summary>
         [JsonProperty("postal_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("postal_code")]
+#endif
         public string PostalCode { get; set; }
 
         /// <summary>
         /// State where the seller is located.
         /// </summary>
         [JsonProperty("state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("state")]
+#endif
         public string State { get; set; }
 
         /// <summary>
         /// An ID assigned by the seller to the location of the sale.
         /// </summary>
         [JsonProperty("terminal_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("terminal_id")]
+#endif
         public string TerminalId { get; set; }
 
         /// <summary>
         /// URL provided by the merchant on a 3DS request.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFleetCardholderPromptDataOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFleetCardholderPromptDataOptions.cs
index 0793c8df7e..1ce9010d3d 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFleetCardholderPromptDataOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFleetCardholderPromptDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionPurchaseDetailsFleetCardholderPromptDataOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class TransactionPurchaseDetailsFleetCardholderPromptDataOptions : INeste
         /// Driver ID.
         /// </summary>
         [JsonProperty("driver_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("driver_id")]
+#endif
         public string DriverId { get; set; }
 
         /// <summary>
         /// Odometer reading.
         /// </summary>
         [JsonProperty("odometer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("odometer")]
+#endif
         public long? Odometer { get; set; }
 
         /// <summary>
@@ -23,18 +32,27 @@ public class TransactionPurchaseDetailsFleetCardholderPromptDataOptions : INeste
         /// type.
         /// </summary>
         [JsonProperty("unspecified_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unspecified_id")]
+#endif
         public string UnspecifiedId { get; set; }
 
         /// <summary>
         /// User ID.
         /// </summary>
         [JsonProperty("user_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_id")]
+#endif
         public string UserId { get; set; }
 
         /// <summary>
         /// Vehicle number.
         /// </summary>
         [JsonProperty("vehicle_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("vehicle_number")]
+#endif
         public string VehicleNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFleetOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFleetOptions.cs
index 2b8048f0f3..d7afa41e1b 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFleetOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFleetOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionPurchaseDetailsFleetOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class TransactionPurchaseDetailsFleetOptions : INestedOptions
         /// support only numeric entry.
         /// </summary>
         [JsonProperty("cardholder_prompt_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cardholder_prompt_data")]
+#endif
         public TransactionPurchaseDetailsFleetCardholderPromptDataOptions CardholderPromptData { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class TransactionPurchaseDetailsFleetOptions : INestedOptions
         /// <c>non_fuel_purchase</c>.
         /// </summary>
         [JsonProperty("purchase_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("purchase_type")]
+#endif
         public string PurchaseType { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class TransactionPurchaseDetailsFleetOptions : INestedOptions
         /// accurate as some merchants may provide unreliable data.
         /// </summary>
         [JsonProperty("reported_breakdown")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reported_breakdown")]
+#endif
         public TransactionPurchaseDetailsFleetReportedBreakdownOptions ReportedBreakdown { get; set; }
 
         /// <summary>
@@ -35,6 +47,9 @@ public class TransactionPurchaseDetailsFleetOptions : INestedOptions
         /// One of: <c>full_service</c>, <c>non_fuel_transaction</c>, or <c>self_service</c>.
         /// </summary>
         [JsonProperty("service_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("service_type")]
+#endif
         public string ServiceType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdownFuelOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdownFuelOptions.cs
index 786460b709..aac8905610 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdownFuelOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdownFuelOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionPurchaseDetailsFleetReportedBreakdownFuelOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class TransactionPurchaseDetailsFleetReportedBreakdownFuelOptions : INest
         /// of taxes.
         /// </summary>
         [JsonProperty("gross_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gross_amount_decimal")]
+#endif
         public decimal? GrossAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdownNonFuelOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdownNonFuelOptions.cs
index c4056dd2b1..04938ab3e5 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdownNonFuelOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdownNonFuelOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionPurchaseDetailsFleetReportedBreakdownNonFuelOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class TransactionPurchaseDetailsFleetReportedBreakdownNonFuelOptions : IN
         /// Gross non-fuel amount that should equal the sum of the line items, inclusive of taxes.
         /// </summary>
         [JsonProperty("gross_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gross_amount_decimal")]
+#endif
         public decimal? GrossAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdownOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdownOptions.cs
index ef18b6073e..6c1cdfc9c6 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdownOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdownOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionPurchaseDetailsFleetReportedBreakdownOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class TransactionPurchaseDetailsFleetReportedBreakdownOptions : INestedOp
         /// Breakdown of fuel portion of the purchase.
         /// </summary>
         [JsonProperty("fuel")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fuel")]
+#endif
         public TransactionPurchaseDetailsFleetReportedBreakdownFuelOptions Fuel { get; set; }
 
         /// <summary>
         /// Breakdown of non-fuel portion of the purchase.
         /// </summary>
         [JsonProperty("non_fuel")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("non_fuel")]
+#endif
         public TransactionPurchaseDetailsFleetReportedBreakdownNonFuelOptions NonFuel { get; set; }
 
         /// <summary>
         /// Information about tax included in this transaction.
         /// </summary>
         [JsonProperty("tax")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax")]
+#endif
         public TransactionPurchaseDetailsFleetReportedBreakdownTaxOptions Tax { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdownTaxOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdownTaxOptions.cs
index 80cab529e7..96d43b20a7 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdownTaxOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFleetReportedBreakdownTaxOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionPurchaseDetailsFleetReportedBreakdownTaxOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class TransactionPurchaseDetailsFleetReportedBreakdownTaxOptions : INeste
         /// reported by merchant or not subject to tax.
         /// </summary>
         [JsonProperty("local_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("local_amount_decimal")]
+#endif
         public decimal? LocalAmountDecimal { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class TransactionPurchaseDetailsFleetReportedBreakdownTaxOptions : INeste
         /// reported by merchant or not subject to tax.
         /// </summary>
         [JsonProperty("national_amount_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("national_amount_decimal")]
+#endif
         public decimal? NationalAmountDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFlightOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFlightOptions.cs
index f3c915275d..14e4de07cb 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFlightOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFlightOptions.cs
@@ -5,6 +5,9 @@ namespace Stripe.TestHelpers.Issuing
     using System.Collections.Generic;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionPurchaseDetailsFlightOptions : INestedOptions
     {
@@ -13,30 +16,46 @@ public class TransactionPurchaseDetailsFlightOptions : INestedOptions
         /// </summary>
         [JsonProperty("departure_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("departure_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? DepartureAt { get; set; }
 
         /// <summary>
         /// The name of the passenger.
         /// </summary>
         [JsonProperty("passenger_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("passenger_name")]
+#endif
         public string PassengerName { get; set; }
 
         /// <summary>
         /// Whether the ticket is refundable.
         /// </summary>
         [JsonProperty("refundable")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refundable")]
+#endif
         public bool? Refundable { get; set; }
 
         /// <summary>
         /// The legs of the trip.
         /// </summary>
         [JsonProperty("segments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("segments")]
+#endif
         public List<TransactionPurchaseDetailsFlightSegmentOptions> Segments { get; set; }
 
         /// <summary>
         /// The travel agency that issued the ticket.
         /// </summary>
         [JsonProperty("travel_agency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("travel_agency")]
+#endif
         public string TravelAgency { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFlightSegmentOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFlightSegmentOptions.cs
index f944ec339f..926778a485 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFlightSegmentOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFlightSegmentOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionPurchaseDetailsFlightSegmentOptions : INestedOptions
     {
@@ -9,36 +12,54 @@ public class TransactionPurchaseDetailsFlightSegmentOptions : INestedOptions
         /// The three-letter IATA airport code of the flight's destination.
         /// </summary>
         [JsonProperty("arrival_airport_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("arrival_airport_code")]
+#endif
         public string ArrivalAirportCode { get; set; }
 
         /// <summary>
         /// The airline carrier code.
         /// </summary>
         [JsonProperty("carrier")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("carrier")]
+#endif
         public string Carrier { get; set; }
 
         /// <summary>
         /// The three-letter IATA airport code that the flight departed from.
         /// </summary>
         [JsonProperty("departure_airport_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("departure_airport_code")]
+#endif
         public string DepartureAirportCode { get; set; }
 
         /// <summary>
         /// The flight number.
         /// </summary>
         [JsonProperty("flight_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flight_number")]
+#endif
         public string FlightNumber { get; set; }
 
         /// <summary>
         /// The flight's service class.
         /// </summary>
         [JsonProperty("service_class")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("service_class")]
+#endif
         public string ServiceClass { get; set; }
 
         /// <summary>
         /// Whether a stopover is allowed on this flight.
         /// </summary>
         [JsonProperty("stopover_allowed")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("stopover_allowed")]
+#endif
         public bool? StopoverAllowed { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFuelOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFuelOptions.cs
index 6e7c86e0c5..b2a3a9aa5f 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFuelOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsFuelOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionPurchaseDetailsFuelOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class TransactionPurchaseDetailsFuelOptions : INestedOptions
         /// Payment System Product Code</a> identifying the primary fuel product purchased.
         /// </summary>
         [JsonProperty("industry_product_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("industry_product_code")]
+#endif
         public string IndustryProductCode { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class TransactionPurchaseDetailsFuelOptions : INestedOptions
         /// with at most 12 decimal places.
         /// </summary>
         [JsonProperty("quantity_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity_decimal")]
+#endif
         public decimal? QuantityDecimal { get; set; }
 
         /// <summary>
@@ -26,6 +35,9 @@ public class TransactionPurchaseDetailsFuelOptions : INestedOptions
         /// <c>unleaded_super</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
@@ -36,6 +48,9 @@ public class TransactionPurchaseDetailsFuelOptions : INestedOptions
         /// <c>kilowatt_hour</c>, <c>liter</c>, <c>other</c>, <c>pound</c>, or <c>us_gallon</c>.
         /// </summary>
         [JsonProperty("unit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit")]
+#endif
         public string Unit { get; set; }
 
         /// <summary>
@@ -43,6 +58,9 @@ public class TransactionPurchaseDetailsFuelOptions : INestedOptions
         /// decimal places.
         /// </summary>
         [JsonProperty("unit_cost_decimal")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_cost_decimal")]
+#endif
         public decimal? UnitCostDecimal { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsLodgingOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsLodgingOptions.cs
index 0f1ae25b71..c04fc70a0e 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsLodgingOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsLodgingOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe.TestHelpers.Issuing
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionPurchaseDetailsLodgingOptions : INestedOptions
     {
@@ -12,12 +15,19 @@ public class TransactionPurchaseDetailsLodgingOptions : INestedOptions
         /// </summary>
         [JsonProperty("check_in_at")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("check_in_at")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? CheckInAt { get; set; }
 
         /// <summary>
         /// The number of nights stayed at the lodging.
         /// </summary>
         [JsonProperty("nights")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("nights")]
+#endif
         public long? Nights { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsOptions.cs
index 2db4bf3215..7001d2da86 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.TestHelpers.Issuing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionPurchaseDetailsOptions : INestedOptions
     {
@@ -10,36 +13,54 @@ public class TransactionPurchaseDetailsOptions : INestedOptions
         /// Fleet-specific information for transactions using Fleet cards.
         /// </summary>
         [JsonProperty("fleet")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fleet")]
+#endif
         public TransactionPurchaseDetailsFleetOptions Fleet { get; set; }
 
         /// <summary>
         /// Information about the flight that was purchased with this transaction.
         /// </summary>
         [JsonProperty("flight")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("flight")]
+#endif
         public TransactionPurchaseDetailsFlightOptions Flight { get; set; }
 
         /// <summary>
         /// Information about fuel that was purchased with this transaction.
         /// </summary>
         [JsonProperty("fuel")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("fuel")]
+#endif
         public TransactionPurchaseDetailsFuelOptions Fuel { get; set; }
 
         /// <summary>
         /// Information about lodging that was purchased with this transaction.
         /// </summary>
         [JsonProperty("lodging")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lodging")]
+#endif
         public TransactionPurchaseDetailsLodgingOptions Lodging { get; set; }
 
         /// <summary>
         /// The line items in the purchase.
         /// </summary>
         [JsonProperty("receipt")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("receipt")]
+#endif
         public List<TransactionPurchaseDetailsReceiptOptions> Receipt { get; set; }
 
         /// <summary>
         /// A merchant-specific order number.
         /// </summary>
         [JsonProperty("reference")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("reference")]
+#endif
         public string Reference { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsReceiptOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsReceiptOptions.cs
index 054b1d631c..eb5c9ac2d9 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsReceiptOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionPurchaseDetailsReceiptOptions.cs
@@ -2,19 +2,34 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionPurchaseDetailsReceiptOptions : INestedOptions
     {
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         [JsonProperty("quantity")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("quantity")]
+#endif
         public decimal? Quantity { get; set; }
 
         [JsonProperty("total")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("total")]
+#endif
         public long? Total { get; set; }
 
         [JsonProperty("unit_cost")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("unit_cost")]
+#endif
         public long? UnitCost { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionRefundOptions.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionRefundOptions.cs
index 8c238e39b3..88b5098b5a 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionRefundOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionRefundOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Issuing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionRefundOptions : BaseOptions
     {
@@ -11,6 +14,9 @@ public class TransactionRefundOptions : BaseOptions
         /// href="https://stripe.com/docs/currencies#zero-decimal">smallest currency unit</a>.
         /// </summary>
         [JsonProperty("refund_amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_amount")]
+#endif
         public long? RefundAmount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionService.cs b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionService.cs
index 1ad2fd74bc..9a66996adc 100644
--- a/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionService.cs
+++ b/src/Stripe.net/Services/TestHelpers/Issuing/Transactions/TransactionService.cs
@@ -8,7 +8,7 @@ namespace Stripe.TestHelpers.Issuing
     using System.Threading.Tasks;
     using Stripe.Issuing;
 
-    public class TransactionService : Service<Stripe.Issuing.Transaction>
+    public class TransactionService : Service
     {
         public TransactionService()
         {
diff --git a/src/Stripe.net/Services/TestHelpers/Refunds/RefundService.cs b/src/Stripe.net/Services/TestHelpers/Refunds/RefundService.cs
index 85f2b94970..c1a5e8be71 100644
--- a/src/Stripe.net/Services/TestHelpers/Refunds/RefundService.cs
+++ b/src/Stripe.net/Services/TestHelpers/Refunds/RefundService.cs
@@ -7,7 +7,7 @@ namespace Stripe.TestHelpers
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class RefundService : Service<Refund>
+    public class RefundService : Service
     {
         public RefundService()
         {
diff --git a/src/Stripe.net/Services/TestHelpers/Terminal/Readers/ReaderCardPresentOptions.cs b/src/Stripe.net/Services/TestHelpers/Terminal/Readers/ReaderCardPresentOptions.cs
index 8e07bb2492..27e96c9b17 100644
--- a/src/Stripe.net/Services/TestHelpers/Terminal/Readers/ReaderCardPresentOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Terminal/Readers/ReaderCardPresentOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReaderCardPresentOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class ReaderCardPresentOptions : INestedOptions
         /// The card number, as a string without any separators.
         /// </summary>
         [JsonProperty("number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("number")]
+#endif
         public string Number { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Terminal/Readers/ReaderInteracPresentOptions.cs b/src/Stripe.net/Services/TestHelpers/Terminal/Readers/ReaderInteracPresentOptions.cs
index 1f6a8ea3a1..c5ff2be0d5 100644
--- a/src/Stripe.net/Services/TestHelpers/Terminal/Readers/ReaderInteracPresentOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Terminal/Readers/ReaderInteracPresentOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReaderInteracPresentOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class ReaderInteracPresentOptions : INestedOptions
         /// Card Number.
         /// </summary>
         [JsonProperty("number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("number")]
+#endif
         public string Number { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Terminal/Readers/ReaderPresentPaymentMethodOptions.cs b/src/Stripe.net/Services/TestHelpers/Terminal/Readers/ReaderPresentPaymentMethodOptions.cs
index 5bd247183a..94f1640586 100644
--- a/src/Stripe.net/Services/TestHelpers/Terminal/Readers/ReaderPresentPaymentMethodOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Terminal/Readers/ReaderPresentPaymentMethodOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Terminal
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReaderPresentPaymentMethodOptions : BaseOptions
     {
@@ -9,18 +12,27 @@ public class ReaderPresentPaymentMethodOptions : BaseOptions
         /// Simulated on-reader tip amount.
         /// </summary>
         [JsonProperty("amount_tip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount_tip")]
+#endif
         public long? AmountTip { get; set; }
 
         /// <summary>
         /// Simulated data for the card_present payment method.
         /// </summary>
         [JsonProperty("card_present")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_present")]
+#endif
         public ReaderCardPresentOptions CardPresent { get; set; }
 
         /// <summary>
         /// Simulated data for the interac_present payment method.
         /// </summary>
         [JsonProperty("interac_present")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("interac_present")]
+#endif
         public ReaderInteracPresentOptions InteracPresent { get; set; }
 
         /// <summary>
@@ -28,6 +40,9 @@ public class ReaderPresentPaymentMethodOptions : BaseOptions
         /// One of: <c>card_present</c>, or <c>interac_present</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Terminal/Readers/ReaderService.cs b/src/Stripe.net/Services/TestHelpers/Terminal/Readers/ReaderService.cs
index 3c649d8355..ea4494ada5 100644
--- a/src/Stripe.net/Services/TestHelpers/Terminal/Readers/ReaderService.cs
+++ b/src/Stripe.net/Services/TestHelpers/Terminal/Readers/ReaderService.cs
@@ -8,7 +8,7 @@ namespace Stripe.TestHelpers.Terminal
     using System.Threading.Tasks;
     using Stripe.Terminal;
 
-    public class ReaderService : Service<Stripe.Terminal.Reader>
+    public class ReaderService : Service
     {
         public ReaderService()
         {
diff --git a/src/Stripe.net/Services/TestHelpers/TestClocks/TestClockAdvanceOptions.cs b/src/Stripe.net/Services/TestHelpers/TestClocks/TestClockAdvanceOptions.cs
index 21e9101b52..fabcbc527a 100644
--- a/src/Stripe.net/Services/TestHelpers/TestClocks/TestClockAdvanceOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/TestClocks/TestClockAdvanceOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe.TestHelpers
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TestClockAdvanceOptions : BaseOptions
     {
@@ -15,6 +18,10 @@ public class TestClockAdvanceOptions : BaseOptions
         /// </summary>
         [JsonProperty("frozen_time")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("frozen_time")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? FrozenTime { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/TestClocks/TestClockCreateOptions.cs b/src/Stripe.net/Services/TestHelpers/TestClocks/TestClockCreateOptions.cs
index 49ebfab3bb..89b9abdf1a 100644
--- a/src/Stripe.net/Services/TestHelpers/TestClocks/TestClockCreateOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/TestClocks/TestClockCreateOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe.TestHelpers
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TestClockCreateOptions : BaseOptions
     {
@@ -12,12 +15,19 @@ public class TestClockCreateOptions : BaseOptions
         /// </summary>
         [JsonProperty("frozen_time")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("frozen_time")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? FrozenTime { get; set; }
 
         /// <summary>
         /// The name for this test clock.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/TestClocks/TestClockService.cs b/src/Stripe.net/Services/TestHelpers/TestClocks/TestClockService.cs
index 5ce5c4561b..c7ef95ee59 100644
--- a/src/Stripe.net/Services/TestHelpers/TestClocks/TestClockService.cs
+++ b/src/Stripe.net/Services/TestHelpers/TestClocks/TestClockService.cs
@@ -8,7 +8,7 @@ namespace Stripe.TestHelpers
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class TestClockService : Service<TestClock>,
+    public class TestClockService : Service,
         ICreatable<TestClock, TestClockCreateOptions>,
         IDeletable<TestClock, TestClockDeleteOptions>,
         IListable<TestClock, TestClockListOptions>,
diff --git a/src/Stripe.net/Services/TestHelpers/Treasury/InboundTransfers/InboundTransferFailOptions.cs b/src/Stripe.net/Services/TestHelpers/Treasury/InboundTransfers/InboundTransferFailOptions.cs
index 68350fd152..1c75da48f9 100644
--- a/src/Stripe.net/Services/TestHelpers/Treasury/InboundTransfers/InboundTransferFailOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Treasury/InboundTransfers/InboundTransferFailOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InboundTransferFailOptions : BaseOptions
     {
@@ -9,6 +12,9 @@ public class InboundTransferFailOptions : BaseOptions
         /// Details about a failed InboundTransfer.
         /// </summary>
         [JsonProperty("failure_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("failure_details")]
+#endif
         public InboundTransferFailureDetailsOptions FailureDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Treasury/InboundTransfers/InboundTransferFailureDetailsOptions.cs b/src/Stripe.net/Services/TestHelpers/Treasury/InboundTransfers/InboundTransferFailureDetailsOptions.cs
index ab8fdff42b..3b81d682aa 100644
--- a/src/Stripe.net/Services/TestHelpers/Treasury/InboundTransfers/InboundTransferFailureDetailsOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Treasury/InboundTransfers/InboundTransferFailureDetailsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InboundTransferFailureDetailsOptions : INestedOptions
     {
@@ -15,6 +18,9 @@ public class InboundTransferFailureDetailsOptions : INestedOptions
         /// <c>other</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Treasury/InboundTransfers/InboundTransferService.cs b/src/Stripe.net/Services/TestHelpers/Treasury/InboundTransfers/InboundTransferService.cs
index e54de8b5e5..0a2760a377 100644
--- a/src/Stripe.net/Services/TestHelpers/Treasury/InboundTransfers/InboundTransferService.cs
+++ b/src/Stripe.net/Services/TestHelpers/Treasury/InboundTransfers/InboundTransferService.cs
@@ -8,7 +8,7 @@ namespace Stripe.TestHelpers.Treasury
     using System.Threading.Tasks;
     using Stripe.Treasury;
 
-    public class InboundTransferService : Service<Stripe.Treasury.InboundTransfer>
+    public class InboundTransferService : Service
     {
         public InboundTransferService()
         {
diff --git a/src/Stripe.net/Services/TestHelpers/Treasury/OutboundPayments/OutboundPaymentReturnOutboundPaymentOptions.cs b/src/Stripe.net/Services/TestHelpers/Treasury/OutboundPayments/OutboundPaymentReturnOutboundPaymentOptions.cs
index abf82d96ce..cca2bf20d6 100644
--- a/src/Stripe.net/Services/TestHelpers/Treasury/OutboundPayments/OutboundPaymentReturnOutboundPaymentOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Treasury/OutboundPayments/OutboundPaymentReturnOutboundPaymentOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundPaymentReturnOutboundPaymentOptions : BaseOptions
     {
@@ -9,6 +12,9 @@ public class OutboundPaymentReturnOutboundPaymentOptions : BaseOptions
         /// Optional hash to set the return code.
         /// </summary>
         [JsonProperty("returned_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("returned_details")]
+#endif
         public OutboundPaymentReturnedDetailsOptions ReturnedDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Treasury/OutboundPayments/OutboundPaymentReturnedDetailsOptions.cs b/src/Stripe.net/Services/TestHelpers/Treasury/OutboundPayments/OutboundPaymentReturnedDetailsOptions.cs
index 3996e7cff4..2692be8bf9 100644
--- a/src/Stripe.net/Services/TestHelpers/Treasury/OutboundPayments/OutboundPaymentReturnedDetailsOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Treasury/OutboundPayments/OutboundPaymentReturnedDetailsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundPaymentReturnedDetailsOptions : INestedOptions
     {
@@ -13,6 +16,9 @@ public class OutboundPaymentReturnedDetailsOptions : INestedOptions
         /// <c>other</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Treasury/OutboundPayments/OutboundPaymentService.cs b/src/Stripe.net/Services/TestHelpers/Treasury/OutboundPayments/OutboundPaymentService.cs
index e4e71c07b7..f479774308 100644
--- a/src/Stripe.net/Services/TestHelpers/Treasury/OutboundPayments/OutboundPaymentService.cs
+++ b/src/Stripe.net/Services/TestHelpers/Treasury/OutboundPayments/OutboundPaymentService.cs
@@ -8,7 +8,7 @@ namespace Stripe.TestHelpers.Treasury
     using System.Threading.Tasks;
     using Stripe.Treasury;
 
-    public class OutboundPaymentService : Service<Stripe.Treasury.OutboundPayment>
+    public class OutboundPaymentService : Service
     {
         public OutboundPaymentService()
         {
diff --git a/src/Stripe.net/Services/TestHelpers/Treasury/OutboundPayments/OutboundPaymentTrackingDetailsAchOptions.cs b/src/Stripe.net/Services/TestHelpers/Treasury/OutboundPayments/OutboundPaymentTrackingDetailsAchOptions.cs
index 05f1f254ce..cd5ff84280 100644
--- a/src/Stripe.net/Services/TestHelpers/Treasury/OutboundPayments/OutboundPaymentTrackingDetailsAchOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Treasury/OutboundPayments/OutboundPaymentTrackingDetailsAchOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundPaymentTrackingDetailsAchOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class OutboundPaymentTrackingDetailsAchOptions : INestedOptions
         /// ACH trace ID for funds sent over the <c>ach</c> network.
         /// </summary>
         [JsonProperty("trace_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trace_id")]
+#endif
         public string TraceId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Treasury/OutboundPayments/OutboundPaymentTrackingDetailsOptions.cs b/src/Stripe.net/Services/TestHelpers/Treasury/OutboundPayments/OutboundPaymentTrackingDetailsOptions.cs
index 66dea56cf3..1bd95afcbc 100644
--- a/src/Stripe.net/Services/TestHelpers/Treasury/OutboundPayments/OutboundPaymentTrackingDetailsOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Treasury/OutboundPayments/OutboundPaymentTrackingDetailsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundPaymentTrackingDetailsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class OutboundPaymentTrackingDetailsOptions : INestedOptions
         /// ACH network tracking details.
         /// </summary>
         [JsonProperty("ach")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ach")]
+#endif
         public OutboundPaymentTrackingDetailsAchOptions Ach { get; set; }
 
         /// <summary>
@@ -16,12 +22,18 @@ public class OutboundPaymentTrackingDetailsOptions : INestedOptions
         /// One of: <c>ach</c>, or <c>us_domestic_wire</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
         /// US domestic wire network tracking details.
         /// </summary>
         [JsonProperty("us_domestic_wire")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_domestic_wire")]
+#endif
         public OutboundPaymentTrackingDetailsUsDomesticWireOptions UsDomesticWire { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Treasury/OutboundPayments/OutboundPaymentTrackingDetailsUsDomesticWireOptions.cs b/src/Stripe.net/Services/TestHelpers/Treasury/OutboundPayments/OutboundPaymentTrackingDetailsUsDomesticWireOptions.cs
index b3a0a99fbf..cefab058a0 100644
--- a/src/Stripe.net/Services/TestHelpers/Treasury/OutboundPayments/OutboundPaymentTrackingDetailsUsDomesticWireOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Treasury/OutboundPayments/OutboundPaymentTrackingDetailsUsDomesticWireOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundPaymentTrackingDetailsUsDomesticWireOptions : INestedOptions
     {
@@ -10,18 +13,27 @@ public class OutboundPaymentTrackingDetailsUsDomesticWireOptions : INestedOption
         /// network.
         /// </summary>
         [JsonProperty("chips")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("chips")]
+#endif
         public string Chips { get; set; }
 
         /// <summary>
         /// IMAD for funds sent over the <c>us_domestic_wire</c> network.
         /// </summary>
         [JsonProperty("imad")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("imad")]
+#endif
         public string Imad { get; set; }
 
         /// <summary>
         /// OMAD for funds sent over the <c>us_domestic_wire</c> network.
         /// </summary>
         [JsonProperty("omad")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("omad")]
+#endif
         public string Omad { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Treasury/OutboundPayments/OutboundPaymentUpdateOptions.cs b/src/Stripe.net/Services/TestHelpers/Treasury/OutboundPayments/OutboundPaymentUpdateOptions.cs
index c04d23c13a..ad01d4c0c8 100644
--- a/src/Stripe.net/Services/TestHelpers/Treasury/OutboundPayments/OutboundPaymentUpdateOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Treasury/OutboundPayments/OutboundPaymentUpdateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundPaymentUpdateOptions : BaseOptions
     {
@@ -9,6 +12,9 @@ public class OutboundPaymentUpdateOptions : BaseOptions
         /// Details about network-specific tracking information.
         /// </summary>
         [JsonProperty("tracking_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tracking_details")]
+#endif
         public OutboundPaymentTrackingDetailsOptions TrackingDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Treasury/OutboundTransfers/OutboundTransferReturnOutboundTransferOptions.cs b/src/Stripe.net/Services/TestHelpers/Treasury/OutboundTransfers/OutboundTransferReturnOutboundTransferOptions.cs
index 32558ebbab..cc5cea9b2e 100644
--- a/src/Stripe.net/Services/TestHelpers/Treasury/OutboundTransfers/OutboundTransferReturnOutboundTransferOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Treasury/OutboundTransfers/OutboundTransferReturnOutboundTransferOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundTransferReturnOutboundTransferOptions : BaseOptions
     {
@@ -9,6 +12,9 @@ public class OutboundTransferReturnOutboundTransferOptions : BaseOptions
         /// Details about a returned OutboundTransfer.
         /// </summary>
         [JsonProperty("returned_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("returned_details")]
+#endif
         public OutboundTransferReturnedDetailsOptions ReturnedDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Treasury/OutboundTransfers/OutboundTransferReturnedDetailsOptions.cs b/src/Stripe.net/Services/TestHelpers/Treasury/OutboundTransfers/OutboundTransferReturnedDetailsOptions.cs
index c5c5e41ea3..2eb123cb3e 100644
--- a/src/Stripe.net/Services/TestHelpers/Treasury/OutboundTransfers/OutboundTransferReturnedDetailsOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Treasury/OutboundTransfers/OutboundTransferReturnedDetailsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundTransferReturnedDetailsOptions : INestedOptions
     {
@@ -13,6 +16,9 @@ public class OutboundTransferReturnedDetailsOptions : INestedOptions
         /// <c>other</c>.
         /// </summary>
         [JsonProperty("code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("code")]
+#endif
         public string Code { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Treasury/OutboundTransfers/OutboundTransferService.cs b/src/Stripe.net/Services/TestHelpers/Treasury/OutboundTransfers/OutboundTransferService.cs
index 173b01c11c..26d0389fe4 100644
--- a/src/Stripe.net/Services/TestHelpers/Treasury/OutboundTransfers/OutboundTransferService.cs
+++ b/src/Stripe.net/Services/TestHelpers/Treasury/OutboundTransfers/OutboundTransferService.cs
@@ -8,7 +8,7 @@ namespace Stripe.TestHelpers.Treasury
     using System.Threading.Tasks;
     using Stripe.Treasury;
 
-    public class OutboundTransferService : Service<Stripe.Treasury.OutboundTransfer>
+    public class OutboundTransferService : Service
     {
         public OutboundTransferService()
         {
diff --git a/src/Stripe.net/Services/TestHelpers/Treasury/OutboundTransfers/OutboundTransferTrackingDetailsAchOptions.cs b/src/Stripe.net/Services/TestHelpers/Treasury/OutboundTransfers/OutboundTransferTrackingDetailsAchOptions.cs
index bf94ad0dcd..b96b34082a 100644
--- a/src/Stripe.net/Services/TestHelpers/Treasury/OutboundTransfers/OutboundTransferTrackingDetailsAchOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Treasury/OutboundTransfers/OutboundTransferTrackingDetailsAchOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundTransferTrackingDetailsAchOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class OutboundTransferTrackingDetailsAchOptions : INestedOptions
         /// ACH trace ID for funds sent over the <c>ach</c> network.
         /// </summary>
         [JsonProperty("trace_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("trace_id")]
+#endif
         public string TraceId { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Treasury/OutboundTransfers/OutboundTransferTrackingDetailsOptions.cs b/src/Stripe.net/Services/TestHelpers/Treasury/OutboundTransfers/OutboundTransferTrackingDetailsOptions.cs
index 6e5c991ae5..14e893d83f 100644
--- a/src/Stripe.net/Services/TestHelpers/Treasury/OutboundTransfers/OutboundTransferTrackingDetailsOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Treasury/OutboundTransfers/OutboundTransferTrackingDetailsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundTransferTrackingDetailsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class OutboundTransferTrackingDetailsOptions : INestedOptions
         /// ACH network tracking details.
         /// </summary>
         [JsonProperty("ach")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ach")]
+#endif
         public OutboundTransferTrackingDetailsAchOptions Ach { get; set; }
 
         /// <summary>
@@ -16,12 +22,18 @@ public class OutboundTransferTrackingDetailsOptions : INestedOptions
         /// One of: <c>ach</c>, or <c>us_domestic_wire</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
         /// US domestic wire network tracking details.
         /// </summary>
         [JsonProperty("us_domestic_wire")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_domestic_wire")]
+#endif
         public OutboundTransferTrackingDetailsUsDomesticWireOptions UsDomesticWire { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Treasury/OutboundTransfers/OutboundTransferTrackingDetailsUsDomesticWireOptions.cs b/src/Stripe.net/Services/TestHelpers/Treasury/OutboundTransfers/OutboundTransferTrackingDetailsUsDomesticWireOptions.cs
index a59d91e911..5a82995b3e 100644
--- a/src/Stripe.net/Services/TestHelpers/Treasury/OutboundTransfers/OutboundTransferTrackingDetailsUsDomesticWireOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Treasury/OutboundTransfers/OutboundTransferTrackingDetailsUsDomesticWireOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundTransferTrackingDetailsUsDomesticWireOptions : INestedOptions
     {
@@ -10,18 +13,27 @@ public class OutboundTransferTrackingDetailsUsDomesticWireOptions : INestedOptio
         /// network.
         /// </summary>
         [JsonProperty("chips")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("chips")]
+#endif
         public string Chips { get; set; }
 
         /// <summary>
         /// IMAD for funds sent over the <c>us_domestic_wire</c> network.
         /// </summary>
         [JsonProperty("imad")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("imad")]
+#endif
         public string Imad { get; set; }
 
         /// <summary>
         /// OMAD for funds sent over the <c>us_domestic_wire</c> network.
         /// </summary>
         [JsonProperty("omad")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("omad")]
+#endif
         public string Omad { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Treasury/OutboundTransfers/OutboundTransferUpdateOptions.cs b/src/Stripe.net/Services/TestHelpers/Treasury/OutboundTransfers/OutboundTransferUpdateOptions.cs
index 5c3fe62ddd..5b8f62ec04 100644
--- a/src/Stripe.net/Services/TestHelpers/Treasury/OutboundTransfers/OutboundTransferUpdateOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Treasury/OutboundTransfers/OutboundTransferUpdateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundTransferUpdateOptions : BaseOptions
     {
@@ -9,6 +12,9 @@ public class OutboundTransferUpdateOptions : BaseOptions
         /// Details about network-specific tracking information.
         /// </summary>
         [JsonProperty("tracking_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tracking_details")]
+#endif
         public OutboundTransferTrackingDetailsOptions TrackingDetails { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedCredits/ReceivedCreditCreateOptions.cs b/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedCredits/ReceivedCreditCreateOptions.cs
index bc2f74411d..94db0ac185 100644
--- a/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedCredits/ReceivedCreditCreateOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedCredits/ReceivedCreditCreateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReceivedCreditCreateOptions : BaseOptions
     {
@@ -9,6 +12,9 @@ public class ReceivedCreditCreateOptions : BaseOptions
         /// Amount (in cents) to be transferred.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -17,24 +23,36 @@ public class ReceivedCreditCreateOptions : BaseOptions
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// The FinancialAccount to send funds to.
         /// </summary>
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public string FinancialAccount { get; set; }
 
         /// <summary>
         /// Initiating payment method details for the object.
         /// </summary>
         [JsonProperty("initiating_payment_method_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("initiating_payment_method_details")]
+#endif
         public ReceivedCreditInitiatingPaymentMethodDetailsOptions InitiatingPaymentMethodDetails { get; set; }
 
         /// <summary>
@@ -45,6 +63,9 @@ public class ReceivedCreditCreateOptions : BaseOptions
         /// One of: <c>ach</c>, or <c>us_domestic_wire</c>.
         /// </summary>
         [JsonProperty("network")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network")]
+#endif
         public string Network { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedCredits/ReceivedCreditInitiatingPaymentMethodDetailsOptions.cs b/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedCredits/ReceivedCreditInitiatingPaymentMethodDetailsOptions.cs
index 5f06f85949..fde77b7dc2 100644
--- a/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedCredits/ReceivedCreditInitiatingPaymentMethodDetailsOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedCredits/ReceivedCreditInitiatingPaymentMethodDetailsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReceivedCreditInitiatingPaymentMethodDetailsOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class ReceivedCreditInitiatingPaymentMethodDetailsOptions : INestedOption
         /// The source type.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
         /// Optional fields for <c>us_bank_account</c>.
         /// </summary>
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public ReceivedCreditInitiatingPaymentMethodDetailsUsBankAccountOptions UsBankAccount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedCredits/ReceivedCreditInitiatingPaymentMethodDetailsUsBankAccountOptions.cs b/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedCredits/ReceivedCreditInitiatingPaymentMethodDetailsUsBankAccountOptions.cs
index cc12c0a373..42a4eb0694 100644
--- a/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedCredits/ReceivedCreditInitiatingPaymentMethodDetailsUsBankAccountOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedCredits/ReceivedCreditInitiatingPaymentMethodDetailsUsBankAccountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReceivedCreditInitiatingPaymentMethodDetailsUsBankAccountOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class ReceivedCreditInitiatingPaymentMethodDetailsUsBankAccountOptions :
         /// The bank account holder's name.
         /// </summary>
         [JsonProperty("account_holder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_name")]
+#endif
         public string AccountHolderName { get; set; }
 
         /// <summary>
         /// The bank account number.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
         /// The bank account's routing number.
         /// </summary>
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedCredits/ReceivedCreditService.cs b/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedCredits/ReceivedCreditService.cs
index fc8a808f25..185856cf00 100644
--- a/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedCredits/ReceivedCreditService.cs
+++ b/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedCredits/ReceivedCreditService.cs
@@ -7,7 +7,7 @@ namespace Stripe.TestHelpers.Treasury
     using System.Threading.Tasks;
     using Stripe.Treasury;
 
-    public class ReceivedCreditService : Service<Stripe.Treasury.ReceivedCredit>
+    public class ReceivedCreditService : Service
     {
         public ReceivedCreditService()
         {
diff --git a/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedDebits/ReceivedDebitCreateOptions.cs b/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedDebits/ReceivedDebitCreateOptions.cs
index d67af9551e..85b85245da 100644
--- a/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedDebits/ReceivedDebitCreateOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedDebits/ReceivedDebitCreateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReceivedDebitCreateOptions : BaseOptions
     {
@@ -9,6 +12,9 @@ public class ReceivedDebitCreateOptions : BaseOptions
         /// Amount (in cents) to be transferred.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -17,24 +23,36 @@ public class ReceivedDebitCreateOptions : BaseOptions
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// The FinancialAccount to pull funds from.
         /// </summary>
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public string FinancialAccount { get; set; }
 
         /// <summary>
         /// Initiating payment method details for the object.
         /// </summary>
         [JsonProperty("initiating_payment_method_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("initiating_payment_method_details")]
+#endif
         public ReceivedDebitInitiatingPaymentMethodDetailsOptions InitiatingPaymentMethodDetails { get; set; }
 
         /// <summary>
@@ -44,6 +62,9 @@ public class ReceivedDebitCreateOptions : BaseOptions
         /// about money movement timelines for each network type.
         /// </summary>
         [JsonProperty("network")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network")]
+#endif
         public string Network { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedDebits/ReceivedDebitInitiatingPaymentMethodDetailsOptions.cs b/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedDebits/ReceivedDebitInitiatingPaymentMethodDetailsOptions.cs
index 389d98dbee..7e435022a4 100644
--- a/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedDebits/ReceivedDebitInitiatingPaymentMethodDetailsOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedDebits/ReceivedDebitInitiatingPaymentMethodDetailsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReceivedDebitInitiatingPaymentMethodDetailsOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class ReceivedDebitInitiatingPaymentMethodDetailsOptions : INestedOptions
         /// The source type.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
         /// Optional fields for <c>us_bank_account</c>.
         /// </summary>
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public ReceivedDebitInitiatingPaymentMethodDetailsUsBankAccountOptions UsBankAccount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedDebits/ReceivedDebitInitiatingPaymentMethodDetailsUsBankAccountOptions.cs b/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedDebits/ReceivedDebitInitiatingPaymentMethodDetailsUsBankAccountOptions.cs
index 2fd32add48..dbd9107891 100644
--- a/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedDebits/ReceivedDebitInitiatingPaymentMethodDetailsUsBankAccountOptions.cs
+++ b/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedDebits/ReceivedDebitInitiatingPaymentMethodDetailsUsBankAccountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.TestHelpers.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReceivedDebitInitiatingPaymentMethodDetailsUsBankAccountOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class ReceivedDebitInitiatingPaymentMethodDetailsUsBankAccountOptions : I
         /// The bank account holder's name.
         /// </summary>
         [JsonProperty("account_holder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_name")]
+#endif
         public string AccountHolderName { get; set; }
 
         /// <summary>
         /// The bank account number.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
         /// The bank account's routing number.
         /// </summary>
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedDebits/ReceivedDebitService.cs b/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedDebits/ReceivedDebitService.cs
index 1b43df542b..dfb3efa97c 100644
--- a/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedDebits/ReceivedDebitService.cs
+++ b/src/Stripe.net/Services/TestHelpers/Treasury/ReceivedDebits/ReceivedDebitService.cs
@@ -7,7 +7,7 @@ namespace Stripe.TestHelpers.Treasury
     using System.Threading.Tasks;
     using Stripe.Treasury;
 
-    public class ReceivedDebitService : Service<Stripe.Treasury.ReceivedDebit>
+    public class ReceivedDebitService : Service
     {
         public ReceivedDebitService()
         {
diff --git a/src/Stripe.net/Services/Tokens/TokenAccountCompanyDirectorshipDeclarationOptions.cs b/src/Stripe.net/Services/Tokens/TokenAccountCompanyDirectorshipDeclarationOptions.cs
index 847645298a..97a4a21d36 100644
--- a/src/Stripe.net/Services/Tokens/TokenAccountCompanyDirectorshipDeclarationOptions.cs
+++ b/src/Stripe.net/Services/Tokens/TokenAccountCompanyDirectorshipDeclarationOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenAccountCompanyDirectorshipDeclarationOptions : INestedOptions
     {
@@ -12,12 +15,19 @@ public class TokenAccountCompanyDirectorshipDeclarationOptions : INestedOptions
         /// </summary>
         [JsonProperty("date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? Date { get; set; }
 
         /// <summary>
         /// The IP address from which the directorship declaration attestation was made.
         /// </summary>
         [JsonProperty("ip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip")]
+#endif
         public string Ip { get; set; }
 
         /// <summary>
@@ -25,6 +35,9 @@ public class TokenAccountCompanyDirectorshipDeclarationOptions : INestedOptions
         /// made.
         /// </summary>
         [JsonProperty("user_agent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_agent")]
+#endif
         public string UserAgent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tokens/TokenAccountCompanyOptions.cs b/src/Stripe.net/Services/Tokens/TokenAccountCompanyOptions.cs
index 23ad933f02..aac9f06252 100644
--- a/src/Stripe.net/Services/Tokens/TokenAccountCompanyOptions.cs
+++ b/src/Stripe.net/Services/Tokens/TokenAccountCompanyOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenAccountCompanyOptions : INestedOptions
     {
@@ -9,18 +12,27 @@ public class TokenAccountCompanyOptions : INestedOptions
         /// The company's primary address.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public AddressOptions Address { get; set; }
 
         /// <summary>
         /// The Kana variation of the company's primary address (Japan only).
         /// </summary>
         [JsonProperty("address_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_kana")]
+#endif
         public AddressJapanOptions AddressKana { get; set; }
 
         /// <summary>
         /// The Kanji variation of the company's primary address (Japan only).
         /// </summary>
         [JsonProperty("address_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_kanji")]
+#endif
         public AddressJapanOptions AddressKanji { get; set; }
 
         /// <summary>
@@ -32,6 +44,9 @@ public class TokenAccountCompanyOptions : INestedOptions
         /// directors have been provided.
         /// </summary>
         [JsonProperty("directors_provided")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("directors_provided")]
+#endif
         public bool? DirectorsProvided { get; set; }
 
         /// <summary>
@@ -39,6 +54,9 @@ public class TokenAccountCompanyOptions : INestedOptions
         /// current and correct.
         /// </summary>
         [JsonProperty("directorship_declaration")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("directorship_declaration")]
+#endif
         public TokenAccountCompanyDirectorshipDeclarationOptions DirectorshipDeclaration { get; set; }
 
         /// <summary>
@@ -48,6 +66,9 @@ public class TokenAccountCompanyOptions : INestedOptions
         /// <c>relationship.executive</c> requirement.
         /// </summary>
         [JsonProperty("executives_provided")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("executives_provided")]
+#endif
         public bool? ExecutivesProvided { get; set; }
 
         /// <summary>
@@ -55,30 +76,45 @@ public class TokenAccountCompanyOptions : INestedOptions
         /// only).
         /// </summary>
         [JsonProperty("export_license_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("export_license_id")]
+#endif
         public string ExportLicenseId { get; set; }
 
         /// <summary>
         /// The purpose code to use for export transactions (India only).
         /// </summary>
         [JsonProperty("export_purpose_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("export_purpose_code")]
+#endif
         public string ExportPurposeCode { get; set; }
 
         /// <summary>
         /// The company's legal name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// The Kana variation of the company's legal name (Japan only).
         /// </summary>
         [JsonProperty("name_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name_kana")]
+#endif
         public string NameKana { get; set; }
 
         /// <summary>
         /// The Kanji variation of the company's legal name (Japan only).
         /// </summary>
         [JsonProperty("name_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name_kanji")]
+#endif
         public string NameKanji { get; set; }
 
         /// <summary>
@@ -87,6 +123,9 @@ public class TokenAccountCompanyOptions : INestedOptions
         /// Persons API</a> for accounts with a <c>relationship.owner</c> requirement.
         /// </summary>
         [JsonProperty("owners_provided")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("owners_provided")]
+#endif
         public bool? OwnersProvided { get; set; }
 
         /// <summary>
@@ -94,6 +133,9 @@ public class TokenAccountCompanyOptions : INestedOptions
         /// both current and correct.
         /// </summary>
         [JsonProperty("ownership_declaration")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ownership_declaration")]
+#endif
         public TokenAccountCompanyOwnershipDeclarationOptions OwnershipDeclaration { get; set; }
 
         /// <summary>
@@ -101,6 +143,9 @@ public class TokenAccountCompanyOptions : INestedOptions
         /// Declaration and indicated that it is correct.
         /// </summary>
         [JsonProperty("ownership_declaration_shown_and_signed")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ownership_declaration_shown_and_signed")]
+#endif
         public bool? OwnershipDeclarationShownAndSigned { get; set; }
 
         /// <summary>
@@ -108,12 +153,18 @@ public class TokenAccountCompanyOptions : INestedOptions
         /// <c>qualifies_as_financial_institution</c>.
         /// </summary>
         [JsonProperty("ownership_exemption_reason")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ownership_exemption_reason")]
+#endif
         public string OwnershipExemptionReason { get; set; }
 
         /// <summary>
         /// The company's phone number (used for verification).
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
 
         /// <summary>
@@ -123,6 +174,9 @@ public class TokenAccountCompanyOptions : INestedOptions
         /// Hong Kong).
         /// </summary>
         [JsonProperty("registration_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("registration_number")]
+#endif
         public string RegistrationNumber { get; set; }
 
         /// <summary>
@@ -141,6 +195,9 @@ public class TokenAccountCompanyOptions : INestedOptions
         /// <c>unincorporated_partnership</c>.
         /// </summary>
         [JsonProperty("structure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("structure")]
+#endif
         public string Structure { get; set; }
 
         /// <summary>
@@ -149,6 +206,9 @@ public class TokenAccountCompanyOptions : INestedOptions
         /// Company Number in the UK.).
         /// </summary>
         [JsonProperty("tax_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_id")]
+#endif
         public string TaxId { get; set; }
 
         /// <summary>
@@ -156,18 +216,27 @@ public class TokenAccountCompanyOptions : INestedOptions
         /// only).
         /// </summary>
         [JsonProperty("tax_id_registrar")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tax_id_registrar")]
+#endif
         public string TaxIdRegistrar { get; set; }
 
         /// <summary>
         /// The VAT number of the company.
         /// </summary>
         [JsonProperty("vat_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("vat_id")]
+#endif
         public string VatId { get; set; }
 
         /// <summary>
         /// Information on the verification state of the company.
         /// </summary>
         [JsonProperty("verification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification")]
+#endif
         public TokenAccountCompanyVerificationOptions Verification { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tokens/TokenAccountCompanyOwnershipDeclarationOptions.cs b/src/Stripe.net/Services/Tokens/TokenAccountCompanyOwnershipDeclarationOptions.cs
index 3cbbb856df..ba5dc7518e 100644
--- a/src/Stripe.net/Services/Tokens/TokenAccountCompanyOwnershipDeclarationOptions.cs
+++ b/src/Stripe.net/Services/Tokens/TokenAccountCompanyOwnershipDeclarationOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenAccountCompanyOwnershipDeclarationOptions : INestedOptions
     {
@@ -12,18 +15,28 @@ public class TokenAccountCompanyOwnershipDeclarationOptions : INestedOptions
         /// </summary>
         [JsonProperty("date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? Date { get; set; }
 
         /// <summary>
         /// The IP address from which the beneficial owner attestation was made.
         /// </summary>
         [JsonProperty("ip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip")]
+#endif
         public string Ip { get; set; }
 
         /// <summary>
         /// The user agent of the browser from which the beneficial owner attestation was made.
         /// </summary>
         [JsonProperty("user_agent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_agent")]
+#endif
         public string UserAgent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tokens/TokenAccountCompanyVerificationDocumentOptions.cs b/src/Stripe.net/Services/Tokens/TokenAccountCompanyVerificationDocumentOptions.cs
index f65eccaa3c..061952a3c3 100644
--- a/src/Stripe.net/Services/Tokens/TokenAccountCompanyVerificationDocumentOptions.cs
+++ b/src/Stripe.net/Services/Tokens/TokenAccountCompanyVerificationDocumentOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenAccountCompanyVerificationDocumentOptions : INestedOptions
     {
@@ -13,6 +16,9 @@ public class TokenAccountCompanyVerificationDocumentOptions : INestedOptions
         /// size.
         /// </summary>
         [JsonProperty("back")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("back")]
+#endif
         public string Back { get; set; }
 
         /// <summary>
@@ -23,6 +29,9 @@ public class TokenAccountCompanyVerificationDocumentOptions : INestedOptions
         /// size.
         /// </summary>
         [JsonProperty("front")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("front")]
+#endif
         public string Front { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tokens/TokenAccountCompanyVerificationOptions.cs b/src/Stripe.net/Services/Tokens/TokenAccountCompanyVerificationOptions.cs
index a145703fc0..cffc6ede30 100644
--- a/src/Stripe.net/Services/Tokens/TokenAccountCompanyVerificationOptions.cs
+++ b/src/Stripe.net/Services/Tokens/TokenAccountCompanyVerificationOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenAccountCompanyVerificationOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class TokenAccountCompanyVerificationOptions : INestedOptions
         /// A document verifying the business.
         /// </summary>
         [JsonProperty("document")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("document")]
+#endif
         public TokenAccountCompanyVerificationDocumentOptions Document { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tokens/TokenAccountIndividualOptions.cs b/src/Stripe.net/Services/Tokens/TokenAccountIndividualOptions.cs
index e03d507104..fb3daefd35 100644
--- a/src/Stripe.net/Services/Tokens/TokenAccountIndividualOptions.cs
+++ b/src/Stripe.net/Services/Tokens/TokenAccountIndividualOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenAccountIndividualOptions : INestedOptions, IHasMetadata
     {
@@ -10,60 +13,90 @@ public class TokenAccountIndividualOptions : INestedOptions, IHasMetadata
         /// The individual's primary address.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public AddressOptions Address { get; set; }
 
         /// <summary>
         /// The Kana variation of the individual's primary address (Japan only).
         /// </summary>
         [JsonProperty("address_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_kana")]
+#endif
         public AddressJapanOptions AddressKana { get; set; }
 
         /// <summary>
         /// The Kanji variation of the individual's primary address (Japan only).
         /// </summary>
         [JsonProperty("address_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_kanji")]
+#endif
         public AddressJapanOptions AddressKanji { get; set; }
 
         /// <summary>
         /// The individual's date of birth.
         /// </summary>
         [JsonProperty("dob")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dob")]
+#endif
         public DobOptions Dob { get; set; }
 
         /// <summary>
         /// The individual's email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// The individual's first name.
         /// </summary>
         [JsonProperty("first_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_name")]
+#endif
         public string FirstName { get; set; }
 
         /// <summary>
         /// The Kana variation of the individual's first name (Japan only).
         /// </summary>
         [JsonProperty("first_name_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_name_kana")]
+#endif
         public string FirstNameKana { get; set; }
 
         /// <summary>
         /// The Kanji variation of the individual's first name (Japan only).
         /// </summary>
         [JsonProperty("first_name_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_name_kanji")]
+#endif
         public string FirstNameKanji { get; set; }
 
         /// <summary>
         /// A list of alternate names or aliases that the individual is known by.
         /// </summary>
         [JsonProperty("full_name_aliases")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("full_name_aliases")]
+#endif
         public List<string> FullNameAliases { get; set; }
 
         /// <summary>
         /// The individual's gender.
         /// </summary>
         [JsonProperty("gender")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gender")]
+#endif
         public string Gender { get; set; }
 
         /// <summary>
@@ -74,6 +107,9 @@ public class TokenAccountIndividualOptions : INestedOptions, IHasMetadata
         /// Stripe.js</a>.
         /// </summary>
         [JsonProperty("id_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id_number")]
+#endif
         public string IdNumber { get; set; }
 
         /// <summary>
@@ -85,30 +121,45 @@ public class TokenAccountIndividualOptions : INestedOptions, IHasMetadata
         /// Stripe.js</a>.
         /// </summary>
         [JsonProperty("id_number_secondary")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id_number_secondary")]
+#endif
         public string IdNumberSecondary { get; set; }
 
         /// <summary>
         /// The individual's last name.
         /// </summary>
         [JsonProperty("last_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_name")]
+#endif
         public string LastName { get; set; }
 
         /// <summary>
         /// The Kana variation of the individual's last name (Japan only).
         /// </summary>
         [JsonProperty("last_name_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_name_kana")]
+#endif
         public string LastNameKana { get; set; }
 
         /// <summary>
         /// The Kanji variation of the individual's last name (Japan only).
         /// </summary>
         [JsonProperty("last_name_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_name_kanji")]
+#endif
         public string LastNameKanji { get; set; }
 
         /// <summary>
         /// The individual's maiden name.
         /// </summary>
         [JsonProperty("maiden_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("maiden_name")]
+#endif
         public string MaidenName { get; set; }
 
         /// <summary>
@@ -118,12 +169,18 @@ public class TokenAccountIndividualOptions : INestedOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The individual's phone number.
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
 
         /// <summary>
@@ -133,30 +190,45 @@ public class TokenAccountIndividualOptions : INestedOptions, IHasMetadata
         /// One of: <c>existing</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("political_exposure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("political_exposure")]
+#endif
         public string PoliticalExposure { get; set; }
 
         /// <summary>
         /// The individual's registered address.
         /// </summary>
         [JsonProperty("registered_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("registered_address")]
+#endif
         public AddressOptions RegisteredAddress { get; set; }
 
         /// <summary>
         /// Describes the person’s relationship to the account.
         /// </summary>
         [JsonProperty("relationship")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("relationship")]
+#endif
         public TokenAccountIndividualRelationshipOptions Relationship { get; set; }
 
         /// <summary>
         /// The last four digits of the individual's Social Security Number (U.S. only).
         /// </summary>
         [JsonProperty("ssn_last_4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ssn_last_4")]
+#endif
         public string SsnLast4 { get; set; }
 
         /// <summary>
         /// The individual's verification document information.
         /// </summary>
         [JsonProperty("verification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification")]
+#endif
         public TokenAccountIndividualVerificationOptions Verification { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tokens/TokenAccountIndividualRelationshipOptions.cs b/src/Stripe.net/Services/Tokens/TokenAccountIndividualRelationshipOptions.cs
index d39e64d590..c003aa4725 100644
--- a/src/Stripe.net/Services/Tokens/TokenAccountIndividualRelationshipOptions.cs
+++ b/src/Stripe.net/Services/Tokens/TokenAccountIndividualRelationshipOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenAccountIndividualRelationshipOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class TokenAccountIndividualRelationshipOptions : INestedOptions
         /// meets its regulatory obligations.
         /// </summary>
         [JsonProperty("director")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("director")]
+#endif
         public bool? Director { get; set; }
 
         /// <summary>
@@ -18,24 +24,36 @@ public class TokenAccountIndividualRelationshipOptions : INestedOptions
         /// organization.
         /// </summary>
         [JsonProperty("executive")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("executive")]
+#endif
         public bool? Executive { get; set; }
 
         /// <summary>
         /// Whether the person is an owner of the account’s legal entity.
         /// </summary>
         [JsonProperty("owner")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("owner")]
+#endif
         public bool? Owner { get; set; }
 
         /// <summary>
         /// The percent owned by the person of the account's legal entity.
         /// </summary>
         [JsonProperty("percent_ownership")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percent_ownership")]
+#endif
         public decimal? PercentOwnership { get; set; }
 
         /// <summary>
         /// The person's title (e.g., CEO, Support Engineer).
         /// </summary>
         [JsonProperty("title")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("title")]
+#endif
         public string Title { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tokens/TokenAccountIndividualVerificationAdditionalDocumentOptions.cs b/src/Stripe.net/Services/Tokens/TokenAccountIndividualVerificationAdditionalDocumentOptions.cs
index 9bd44e1a6c..39cd345f28 100644
--- a/src/Stripe.net/Services/Tokens/TokenAccountIndividualVerificationAdditionalDocumentOptions.cs
+++ b/src/Stripe.net/Services/Tokens/TokenAccountIndividualVerificationAdditionalDocumentOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenAccountIndividualVerificationAdditionalDocumentOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class TokenAccountIndividualVerificationAdditionalDocumentOptions : INest
         /// and less than 10 MB in size.
         /// </summary>
         [JsonProperty("back")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("back")]
+#endif
         public string Back { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class TokenAccountIndividualVerificationAdditionalDocumentOptions : INest
         /// and less than 10 MB in size.
         /// </summary>
         [JsonProperty("front")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("front")]
+#endif
         public string Front { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tokens/TokenAccountIndividualVerificationDocumentOptions.cs b/src/Stripe.net/Services/Tokens/TokenAccountIndividualVerificationDocumentOptions.cs
index fa9508b8c7..a336bd9f66 100644
--- a/src/Stripe.net/Services/Tokens/TokenAccountIndividualVerificationDocumentOptions.cs
+++ b/src/Stripe.net/Services/Tokens/TokenAccountIndividualVerificationDocumentOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenAccountIndividualVerificationDocumentOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class TokenAccountIndividualVerificationDocumentOptions : INestedOptions
         /// and less than 10 MB in size.
         /// </summary>
         [JsonProperty("back")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("back")]
+#endif
         public string Back { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class TokenAccountIndividualVerificationDocumentOptions : INestedOptions
         /// and less than 10 MB in size.
         /// </summary>
         [JsonProperty("front")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("front")]
+#endif
         public string Front { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tokens/TokenAccountIndividualVerificationOptions.cs b/src/Stripe.net/Services/Tokens/TokenAccountIndividualVerificationOptions.cs
index 4fa7e4043d..51e2872797 100644
--- a/src/Stripe.net/Services/Tokens/TokenAccountIndividualVerificationOptions.cs
+++ b/src/Stripe.net/Services/Tokens/TokenAccountIndividualVerificationOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenAccountIndividualVerificationOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class TokenAccountIndividualVerificationOptions : INestedOptions
         /// well-known utility company.
         /// </summary>
         [JsonProperty("additional_document")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("additional_document")]
+#endif
         public TokenAccountIndividualVerificationAdditionalDocumentOptions AdditionalDocument { get; set; }
 
         /// <summary>
         /// An identifying document, either a passport or local ID card.
         /// </summary>
         [JsonProperty("document")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("document")]
+#endif
         public TokenAccountIndividualVerificationDocumentOptions Document { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tokens/TokenAccountOptions.cs b/src/Stripe.net/Services/Tokens/TokenAccountOptions.cs
index cb09e863f0..000a5f56d8 100644
--- a/src/Stripe.net/Services/Tokens/TokenAccountOptions.cs
+++ b/src/Stripe.net/Services/Tokens/TokenAccountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenAccountOptions : INestedOptions
     {
@@ -11,18 +14,27 @@ public class TokenAccountOptions : INestedOptions
         /// <c>non_profit</c>.
         /// </summary>
         [JsonProperty("business_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("business_type")]
+#endif
         public string BusinessType { get; set; }
 
         /// <summary>
         /// Information about the company or business.
         /// </summary>
         [JsonProperty("company")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("company")]
+#endif
         public TokenAccountCompanyOptions Company { get; set; }
 
         /// <summary>
         /// Information about the person represented by the account.
         /// </summary>
         [JsonProperty("individual")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("individual")]
+#endif
         public TokenAccountIndividualOptions Individual { get; set; }
 
         /// <summary>
@@ -32,6 +44,9 @@ public class TokenAccountOptions : INestedOptions
         /// Connect account, this value must be <c>true</c>.
         /// </summary>
         [JsonProperty("tos_shown_and_accepted")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("tos_shown_and_accepted")]
+#endif
         public bool? TosShownAndAccepted { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tokens/TokenBankAccountOptions.cs b/src/Stripe.net/Services/Tokens/TokenBankAccountOptions.cs
index d2085129db..348c30603a 100644
--- a/src/Stripe.net/Services/Tokens/TokenBankAccountOptions.cs
+++ b/src/Stripe.net/Services/Tokens/TokenBankAccountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenBankAccountOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class TokenBankAccountOptions : INestedOptions
         /// when attaching the bank account to a <c>Customer</c> object.
         /// </summary>
         [JsonProperty("account_holder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_name")]
+#endif
         public string AccountHolderName { get; set; }
 
         /// <summary>
@@ -19,12 +25,18 @@ public class TokenBankAccountOptions : INestedOptions
         /// One of: <c>company</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("account_holder_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_type")]
+#endif
         public string AccountHolderType { get; set; }
 
         /// <summary>
         /// The account number for the bank account, in string form. Must be a checking account.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
@@ -33,12 +45,18 @@ public class TokenBankAccountOptions : INestedOptions
         /// One of: <c>checking</c>, <c>futsu</c>, <c>savings</c>, or <c>toza</c>.
         /// </summary>
         [JsonProperty("account_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_type")]
+#endif
         public string AccountType { get; set; }
 
         /// <summary>
         /// The country in which the bank account is located.
         /// </summary>
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         /// <summary>
@@ -46,6 +64,9 @@ public class TokenBankAccountOptions : INestedOptions
         /// href="https://stripe.com/docs/payouts">Stripe supports.</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -59,6 +80,9 @@ public class TokenBankAccountOptions : INestedOptions
         /// <c>attach_to_self=true</c>.
         /// </summary>
         [JsonProperty("payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method")]
+#endif
         public string PaymentMethod { get; set; }
 
         /// <summary>
@@ -68,6 +92,9 @@ public class TokenBankAccountOptions : INestedOptions
         /// <c>account_number</c>, this field is not required.
         /// </summary>
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tokens/TokenCardNetworksOptions.cs b/src/Stripe.net/Services/Tokens/TokenCardNetworksOptions.cs
index 893592fdae..58b1f3a9d4 100644
--- a/src/Stripe.net/Services/Tokens/TokenCardNetworksOptions.cs
+++ b/src/Stripe.net/Services/Tokens/TokenCardNetworksOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenCardNetworksOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class TokenCardNetworksOptions : INestedOptions
         /// One of: <c>cartes_bancaires</c>, <c>mastercard</c>, or <c>visa</c>.
         /// </summary>
         [JsonProperty("preferred")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("preferred")]
+#endif
         public string Preferred { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tokens/TokenCardOptions.cs b/src/Stripe.net/Services/Tokens/TokenCardOptions.cs
index 4839d720cc..a3ff3706ff 100644
--- a/src/Stripe.net/Services/Tokens/TokenCardOptions.cs
+++ b/src/Stripe.net/Services/Tokens/TokenCardOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenCardOptions : INestedOptions
     {
@@ -9,36 +12,54 @@ public class TokenCardOptions : INestedOptions
         /// City / District / Suburb / Town / Village.
         /// </summary>
         [JsonProperty("address_city")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_city")]
+#endif
         public string AddressCity { get; set; }
 
         /// <summary>
         /// Billing address country, if provided.
         /// </summary>
         [JsonProperty("address_country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_country")]
+#endif
         public string AddressCountry { get; set; }
 
         /// <summary>
         /// Address line 1 (Street address / PO Box / Company name).
         /// </summary>
         [JsonProperty("address_line1")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_line1")]
+#endif
         public string AddressLine1 { get; set; }
 
         /// <summary>
         /// Address line 2 (Apartment / Suite / Unit / Building).
         /// </summary>
         [JsonProperty("address_line2")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_line2")]
+#endif
         public string AddressLine2 { get; set; }
 
         /// <summary>
         /// State / County / Province / Region.
         /// </summary>
         [JsonProperty("address_state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_state")]
+#endif
         public string AddressState { get; set; }
 
         /// <summary>
         /// ZIP or postal code.
         /// </summary>
         [JsonProperty("address_zip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_zip")]
+#endif
         public string AddressZip { get; set; }
 
         /// <summary>
@@ -47,42 +68,63 @@ public class TokenCardOptions : INestedOptions
         /// a transfer destination for funds in this currency.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// Card security code. Highly recommended to always include this value.
         /// </summary>
         [JsonProperty("cvc")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cvc")]
+#endif
         public string Cvc { get; set; }
 
         /// <summary>
         /// Two-digit number representing the card's expiration month.
         /// </summary>
         [JsonProperty("exp_month")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_month")]
+#endif
         public string ExpMonth { get; set; }
 
         /// <summary>
         /// Two- or four-digit number representing the card's expiration year.
         /// </summary>
         [JsonProperty("exp_year")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("exp_year")]
+#endif
         public string ExpYear { get; set; }
 
         /// <summary>
         /// Cardholder's full name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// Contains information about card networks used to process the payment.
         /// </summary>
         [JsonProperty("networks")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("networks")]
+#endif
         public TokenCardNetworksOptions Networks { get; set; }
 
         /// <summary>
         /// The card number, as a string without any separators.
         /// </summary>
         [JsonProperty("number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("number")]
+#endif
         public string Number { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tokens/TokenCreateOptions.cs b/src/Stripe.net/Services/Tokens/TokenCreateOptions.cs
index 9f3c96f073..d553a0d813 100644
--- a/src/Stripe.net/Services/Tokens/TokenCreateOptions.cs
+++ b/src/Stripe.net/Services/Tokens/TokenCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenCreateOptions : BaseOptions
     {
@@ -10,6 +13,9 @@ public class TokenCreateOptions : BaseOptions
         /// Information for the account this token represents.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public TokenAccountOptions Account { get; set; }
 
         /// <summary>
@@ -17,6 +23,10 @@ public class TokenCreateOptions : BaseOptions
         /// </summary>
         [JsonProperty("bank_account")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_account")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<string, TokenBankAccountOptions> BankAccount { get; set; }
 
         /// <summary>
@@ -27,6 +37,10 @@ public class TokenCreateOptions : BaseOptions
         /// </summary>
         [JsonProperty("card")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<string, TokenCardOptions> Card { get; set; }
 
         /// <summary>
@@ -39,24 +53,36 @@ public class TokenCreateOptions : BaseOptions
         /// payment methods</a>.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
         /// The updated CVC value this token represents.
         /// </summary>
         [JsonProperty("cvc_update")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cvc_update")]
+#endif
         public TokenCvcUpdateOptions CvcUpdate { get; set; }
 
         /// <summary>
         /// Information for the person this token represents.
         /// </summary>
         [JsonProperty("person")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("person")]
+#endif
         public TokenPersonOptions Person { get; set; }
 
         /// <summary>
         /// The PII this token represents.
         /// </summary>
         [JsonProperty("pii")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("pii")]
+#endif
         public TokenPiiOptions Pii { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tokens/TokenCvcUpdateOptions.cs b/src/Stripe.net/Services/Tokens/TokenCvcUpdateOptions.cs
index 3158f69356..70773ac2f9 100644
--- a/src/Stripe.net/Services/Tokens/TokenCvcUpdateOptions.cs
+++ b/src/Stripe.net/Services/Tokens/TokenCvcUpdateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenCvcUpdateOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class TokenCvcUpdateOptions : INestedOptions
         /// The CVC value, in string form.
         /// </summary>
         [JsonProperty("cvc")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cvc")]
+#endif
         public string Cvc { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tokens/TokenPersonAdditionalTosAcceptancesAccountOptions.cs b/src/Stripe.net/Services/Tokens/TokenPersonAdditionalTosAcceptancesAccountOptions.cs
index 16e98ddecc..ace85ba4b2 100644
--- a/src/Stripe.net/Services/Tokens/TokenPersonAdditionalTosAcceptancesAccountOptions.cs
+++ b/src/Stripe.net/Services/Tokens/TokenPersonAdditionalTosAcceptancesAccountOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenPersonAdditionalTosAcceptancesAccountOptions : INestedOptions
     {
@@ -13,12 +16,19 @@ public class TokenPersonAdditionalTosAcceptancesAccountOptions : INestedOptions
         /// </summary>
         [JsonProperty("date")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("date")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         public DateTime? Date { get; set; }
 
         /// <summary>
         /// The IP address from which the account representative accepted the service agreement.
         /// </summary>
         [JsonProperty("ip")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip")]
+#endif
         public string Ip { get; set; }
 
         /// <summary>
@@ -26,6 +36,9 @@ public class TokenPersonAdditionalTosAcceptancesAccountOptions : INestedOptions
         /// agreement.
         /// </summary>
         [JsonProperty("user_agent")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("user_agent")]
+#endif
         public string UserAgent { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tokens/TokenPersonAdditionalTosAcceptancesOptions.cs b/src/Stripe.net/Services/Tokens/TokenPersonAdditionalTosAcceptancesOptions.cs
index 66d28cd2fd..1b647cf708 100644
--- a/src/Stripe.net/Services/Tokens/TokenPersonAdditionalTosAcceptancesOptions.cs
+++ b/src/Stripe.net/Services/Tokens/TokenPersonAdditionalTosAcceptancesOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenPersonAdditionalTosAcceptancesOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class TokenPersonAdditionalTosAcceptancesOptions : INestedOptions
         /// Details on the legal guardian's acceptance of the main Stripe service agreement.
         /// </summary>
         [JsonProperty("account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account")]
+#endif
         public TokenPersonAdditionalTosAcceptancesAccountOptions Account { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tokens/TokenPersonDocumentsCompanyAuthorizationOptions.cs b/src/Stripe.net/Services/Tokens/TokenPersonDocumentsCompanyAuthorizationOptions.cs
index 4e682cc5c7..1655dfe2e8 100644
--- a/src/Stripe.net/Services/Tokens/TokenPersonDocumentsCompanyAuthorizationOptions.cs
+++ b/src/Stripe.net/Services/Tokens/TokenPersonDocumentsCompanyAuthorizationOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenPersonDocumentsCompanyAuthorizationOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class TokenPersonDocumentsCompanyAuthorizationOptions : INestedOptions
         /// value of <c>account_requirement</c>.
         /// </summary>
         [JsonProperty("files")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("files")]
+#endif
         public List<string> Files { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tokens/TokenPersonDocumentsOptions.cs b/src/Stripe.net/Services/Tokens/TokenPersonDocumentsOptions.cs
index 466813571d..7ac03c7ea8 100644
--- a/src/Stripe.net/Services/Tokens/TokenPersonDocumentsOptions.cs
+++ b/src/Stripe.net/Services/Tokens/TokenPersonDocumentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenPersonDocumentsOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class TokenPersonDocumentsOptions : INestedOptions
         /// the company.
         /// </summary>
         [JsonProperty("company_authorization")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("company_authorization")]
+#endif
         public TokenPersonDocumentsCompanyAuthorizationOptions CompanyAuthorization { get; set; }
 
         /// <summary>
         /// One or more documents showing the person's passport page with photo and personal data.
         /// </summary>
         [JsonProperty("passport")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("passport")]
+#endif
         public TokenPersonDocumentsPassportOptions Passport { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class TokenPersonDocumentsOptions : INestedOptions
         /// they are residing.
         /// </summary>
         [JsonProperty("visa")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("visa")]
+#endif
         public TokenPersonDocumentsVisaOptions Visa { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tokens/TokenPersonDocumentsPassportOptions.cs b/src/Stripe.net/Services/Tokens/TokenPersonDocumentsPassportOptions.cs
index ef744f7b63..6df85d7720 100644
--- a/src/Stripe.net/Services/Tokens/TokenPersonDocumentsPassportOptions.cs
+++ b/src/Stripe.net/Services/Tokens/TokenPersonDocumentsPassportOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenPersonDocumentsPassportOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class TokenPersonDocumentsPassportOptions : INestedOptions
         /// value of <c>account_requirement</c>.
         /// </summary>
         [JsonProperty("files")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("files")]
+#endif
         public List<string> Files { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tokens/TokenPersonDocumentsVisaOptions.cs b/src/Stripe.net/Services/Tokens/TokenPersonDocumentsVisaOptions.cs
index 936e0173c9..2f0f1f500d 100644
--- a/src/Stripe.net/Services/Tokens/TokenPersonDocumentsVisaOptions.cs
+++ b/src/Stripe.net/Services/Tokens/TokenPersonDocumentsVisaOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenPersonDocumentsVisaOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class TokenPersonDocumentsVisaOptions : INestedOptions
         /// value of <c>account_requirement</c>.
         /// </summary>
         [JsonProperty("files")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("files")]
+#endif
         public List<string> Files { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tokens/TokenPersonOptions.cs b/src/Stripe.net/Services/Tokens/TokenPersonOptions.cs
index dffba1945f..d63ce08870 100644
--- a/src/Stripe.net/Services/Tokens/TokenPersonOptions.cs
+++ b/src/Stripe.net/Services/Tokens/TokenPersonOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenPersonOptions : INestedOptions, IHasMetadata
     {
@@ -11,72 +14,108 @@ public class TokenPersonOptions : INestedOptions, IHasMetadata
         /// agreements.
         /// </summary>
         [JsonProperty("additional_tos_acceptances")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("additional_tos_acceptances")]
+#endif
         public TokenPersonAdditionalTosAcceptancesOptions AdditionalTosAcceptances { get; set; }
 
         /// <summary>
         /// The person's address.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public AddressOptions Address { get; set; }
 
         /// <summary>
         /// The Kana variation of the person's address (Japan only).
         /// </summary>
         [JsonProperty("address_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_kana")]
+#endif
         public AddressJapanOptions AddressKana { get; set; }
 
         /// <summary>
         /// The Kanji variation of the person's address (Japan only).
         /// </summary>
         [JsonProperty("address_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address_kanji")]
+#endif
         public AddressJapanOptions AddressKanji { get; set; }
 
         /// <summary>
         /// The person's date of birth.
         /// </summary>
         [JsonProperty("dob")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("dob")]
+#endif
         public DobOptions Dob { get; set; }
 
         /// <summary>
         /// Documents that may be submitted to satisfy various informational requests.
         /// </summary>
         [JsonProperty("documents")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("documents")]
+#endif
         public TokenPersonDocumentsOptions Documents { get; set; }
 
         /// <summary>
         /// The person's email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// The person's first name.
         /// </summary>
         [JsonProperty("first_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_name")]
+#endif
         public string FirstName { get; set; }
 
         /// <summary>
         /// The Kana variation of the person's first name (Japan only).
         /// </summary>
         [JsonProperty("first_name_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_name_kana")]
+#endif
         public string FirstNameKana { get; set; }
 
         /// <summary>
         /// The Kanji variation of the person's first name (Japan only).
         /// </summary>
         [JsonProperty("first_name_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("first_name_kanji")]
+#endif
         public string FirstNameKanji { get; set; }
 
         /// <summary>
         /// A list of alternate names or aliases that the person is known by.
         /// </summary>
         [JsonProperty("full_name_aliases")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("full_name_aliases")]
+#endif
         public List<string> FullNameAliases { get; set; }
 
         /// <summary>
         /// The person's gender (International regulations require either "male" or "female").
         /// </summary>
         [JsonProperty("gender")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gender")]
+#endif
         public string Gender { get; set; }
 
         /// <summary>
@@ -87,6 +126,9 @@ public class TokenPersonOptions : INestedOptions, IHasMetadata
         /// Stripe.js</a>.
         /// </summary>
         [JsonProperty("id_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id_number")]
+#endif
         public string IdNumber { get; set; }
 
         /// <summary>
@@ -97,30 +139,45 @@ public class TokenPersonOptions : INestedOptions, IHasMetadata
         /// Stripe.js</a>.
         /// </summary>
         [JsonProperty("id_number_secondary")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id_number_secondary")]
+#endif
         public string IdNumberSecondary { get; set; }
 
         /// <summary>
         /// The person's last name.
         /// </summary>
         [JsonProperty("last_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_name")]
+#endif
         public string LastName { get; set; }
 
         /// <summary>
         /// The Kana variation of the person's last name (Japan only).
         /// </summary>
         [JsonProperty("last_name_kana")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_name_kana")]
+#endif
         public string LastNameKana { get; set; }
 
         /// <summary>
         /// The Kanji variation of the person's last name (Japan only).
         /// </summary>
         [JsonProperty("last_name_kanji")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("last_name_kanji")]
+#endif
         public string LastNameKanji { get; set; }
 
         /// <summary>
         /// The person's maiden name.
         /// </summary>
         [JsonProperty("maiden_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("maiden_name")]
+#endif
         public string MaidenName { get; set; }
 
         /// <summary>
@@ -130,6 +187,9 @@ public class TokenPersonOptions : INestedOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -138,44 +198,66 @@ public class TokenPersonOptions : INestedOptions, IHasMetadata
         /// if unavailable.
         /// </summary>
         [JsonProperty("nationality")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("nationality")]
+#endif
         public string Nationality { get; set; }
 
         /// <summary>
         /// The person's phone number.
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
 
         /// <summary>
         /// Indicates if the person or any of their representatives, family members, or other
         /// closely related persons, declares that they hold or have held an important public job or
         /// function, in any jurisdiction.
+        /// One of: <c>existing</c>, or <c>none</c>.
         /// </summary>
         [JsonProperty("political_exposure")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("political_exposure")]
+#endif
         public string PoliticalExposure { get; set; }
 
         /// <summary>
         /// The person's registered address.
         /// </summary>
         [JsonProperty("registered_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("registered_address")]
+#endif
         public AddressOptions RegisteredAddress { get; set; }
 
         /// <summary>
         /// The relationship that this person has with the account's legal entity.
         /// </summary>
         [JsonProperty("relationship")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("relationship")]
+#endif
         public TokenPersonRelationshipOptions Relationship { get; set; }
 
         /// <summary>
         /// The last four digits of the person's Social Security number (U.S. only).
         /// </summary>
         [JsonProperty("ssn_last_4")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ssn_last_4")]
+#endif
         public string SsnLast4 { get; set; }
 
         /// <summary>
         /// The person's verification status.
         /// </summary>
         [JsonProperty("verification")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("verification")]
+#endif
         public TokenPersonVerificationOptions Verification { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tokens/TokenPersonRelationshipOptions.cs b/src/Stripe.net/Services/Tokens/TokenPersonRelationshipOptions.cs
index bae8e53255..e5945720c9 100644
--- a/src/Stripe.net/Services/Tokens/TokenPersonRelationshipOptions.cs
+++ b/src/Stripe.net/Services/Tokens/TokenPersonRelationshipOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenPersonRelationshipOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class TokenPersonRelationshipOptions : INestedOptions
         /// Whether the person is the authorizer of the account's representative.
         /// </summary>
         [JsonProperty("authorizer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("authorizer")]
+#endif
         public bool? Authorizer { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class TokenPersonRelationshipOptions : INestedOptions
         /// meets its regulatory obligations.
         /// </summary>
         [JsonProperty("director")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("director")]
+#endif
         public bool? Director { get; set; }
 
         /// <summary>
@@ -24,24 +33,36 @@ public class TokenPersonRelationshipOptions : INestedOptions
         /// organization.
         /// </summary>
         [JsonProperty("executive")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("executive")]
+#endif
         public bool? Executive { get; set; }
 
         /// <summary>
         /// Whether the person is the legal guardian of the account's representative.
         /// </summary>
         [JsonProperty("legal_guardian")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("legal_guardian")]
+#endif
         public bool? LegalGuardian { get; set; }
 
         /// <summary>
         /// Whether the person is an owner of the account’s legal entity.
         /// </summary>
         [JsonProperty("owner")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("owner")]
+#endif
         public bool? Owner { get; set; }
 
         /// <summary>
         /// The percent owned by the person of the account's legal entity.
         /// </summary>
         [JsonProperty("percent_ownership")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("percent_ownership")]
+#endif
         public decimal? PercentOwnership { get; set; }
 
         /// <summary>
@@ -52,12 +73,18 @@ public class TokenPersonRelationshipOptions : INestedOptions
         /// responsible for opening the account.
         /// </summary>
         [JsonProperty("representative")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("representative")]
+#endif
         public bool? Representative { get; set; }
 
         /// <summary>
         /// The person's title (e.g., CEO, Support Engineer).
         /// </summary>
         [JsonProperty("title")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("title")]
+#endif
         public string Title { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tokens/TokenPersonVerificationAdditionalDocumentOptions.cs b/src/Stripe.net/Services/Tokens/TokenPersonVerificationAdditionalDocumentOptions.cs
index 9e5887d6cf..7e27cf2bcc 100644
--- a/src/Stripe.net/Services/Tokens/TokenPersonVerificationAdditionalDocumentOptions.cs
+++ b/src/Stripe.net/Services/Tokens/TokenPersonVerificationAdditionalDocumentOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenPersonVerificationAdditionalDocumentOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class TokenPersonVerificationAdditionalDocumentOptions : INestedOptions
         /// and less than 10 MB in size.
         /// </summary>
         [JsonProperty("back")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("back")]
+#endif
         public string Back { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class TokenPersonVerificationAdditionalDocumentOptions : INestedOptions
         /// and less than 10 MB in size.
         /// </summary>
         [JsonProperty("front")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("front")]
+#endif
         public string Front { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tokens/TokenPersonVerificationDocumentOptions.cs b/src/Stripe.net/Services/Tokens/TokenPersonVerificationDocumentOptions.cs
index 6fc927305b..77f9df7733 100644
--- a/src/Stripe.net/Services/Tokens/TokenPersonVerificationDocumentOptions.cs
+++ b/src/Stripe.net/Services/Tokens/TokenPersonVerificationDocumentOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenPersonVerificationDocumentOptions : INestedOptions
     {
@@ -12,6 +15,9 @@ public class TokenPersonVerificationDocumentOptions : INestedOptions
         /// and less than 10 MB in size.
         /// </summary>
         [JsonProperty("back")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("back")]
+#endif
         public string Back { get; set; }
 
         /// <summary>
@@ -21,6 +27,9 @@ public class TokenPersonVerificationDocumentOptions : INestedOptions
         /// and less than 10 MB in size.
         /// </summary>
         [JsonProperty("front")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("front")]
+#endif
         public string Front { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tokens/TokenPersonVerificationOptions.cs b/src/Stripe.net/Services/Tokens/TokenPersonVerificationOptions.cs
index e818903ac9..f915202fbb 100644
--- a/src/Stripe.net/Services/Tokens/TokenPersonVerificationOptions.cs
+++ b/src/Stripe.net/Services/Tokens/TokenPersonVerificationOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenPersonVerificationOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class TokenPersonVerificationOptions : INestedOptions
         /// well-known utility company.
         /// </summary>
         [JsonProperty("additional_document")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("additional_document")]
+#endif
         public TokenPersonVerificationAdditionalDocumentOptions AdditionalDocument { get; set; }
 
         /// <summary>
         /// An identifying document, either a passport or local ID card.
         /// </summary>
         [JsonProperty("document")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("document")]
+#endif
         public TokenPersonVerificationDocumentOptions Document { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tokens/TokenPiiOptions.cs b/src/Stripe.net/Services/Tokens/TokenPiiOptions.cs
index 1d072cead5..a459715e60 100644
--- a/src/Stripe.net/Services/Tokens/TokenPiiOptions.cs
+++ b/src/Stripe.net/Services/Tokens/TokenPiiOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TokenPiiOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class TokenPiiOptions : INestedOptions
         /// The <c>id_number</c> for the PII, in string form.
         /// </summary>
         [JsonProperty("id_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("id_number")]
+#endif
         public string IdNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Tokens/TokenService.cs b/src/Stripe.net/Services/Tokens/TokenService.cs
index 46aeb3ea5f..7b9aba9692 100644
--- a/src/Stripe.net/Services/Tokens/TokenService.cs
+++ b/src/Stripe.net/Services/Tokens/TokenService.cs
@@ -7,7 +7,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class TokenService : Service<Token>,
+    public class TokenService : Service,
         ICreatable<Token, TokenCreateOptions>,
         IRetrievable<Token, TokenGetOptions>
     {
diff --git a/src/Stripe.net/Services/Topups/TopupCreateOptions.cs b/src/Stripe.net/Services/Topups/TopupCreateOptions.cs
index d1d9adb1c8..f595309d02 100644
--- a/src/Stripe.net/Services/Topups/TopupCreateOptions.cs
+++ b/src/Stripe.net/Services/Topups/TopupCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TopupCreateOptions : BaseOptions, IHasMetadata
     {
@@ -10,6 +13,9 @@ public class TopupCreateOptions : BaseOptions, IHasMetadata
         /// A positive integer representing how much to transfer.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -18,12 +24,18 @@ public class TopupCreateOptions : BaseOptions, IHasMetadata
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -33,6 +45,9 @@ public class TopupCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -42,6 +57,9 @@ public class TopupCreateOptions : BaseOptions, IHasMetadata
         /// href="https://stripe.com/docs/connect/testing#testing-top-ups">Testing Top-ups</a>).
         /// </summary>
         [JsonProperty("source")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source")]
+#endif
         public string Source { get; set; }
 
         /// <summary>
@@ -49,12 +67,18 @@ public class TopupCreateOptions : BaseOptions, IHasMetadata
         /// characters.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
 
         /// <summary>
         /// A string that identifies this top-up as part of a group.
         /// </summary>
         [JsonProperty("transfer_group")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_group")]
+#endif
         public string TransferGroup { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Topups/TopupListOptions.cs b/src/Stripe.net/Services/Topups/TopupListOptions.cs
index de10f96c01..d42d56c1bf 100644
--- a/src/Stripe.net/Services/Topups/TopupListOptions.cs
+++ b/src/Stripe.net/Services/Topups/TopupListOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TopupListOptions : ListOptionsWithCreated
     {
@@ -12,6 +15,10 @@ public class TopupListOptions : ListOptionsWithCreated
         /// </summary>
         [JsonProperty("amount")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, DateRangeOptions> Amount { get; set; }
 
         /// <summary>
@@ -20,6 +27,9 @@ public class TopupListOptions : ListOptionsWithCreated
         /// One of: <c>canceled</c>, <c>failed</c>, <c>pending</c>, or <c>succeeded</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Topups/TopupService.cs b/src/Stripe.net/Services/Topups/TopupService.cs
index 7b0836ea00..24526862da 100644
--- a/src/Stripe.net/Services/Topups/TopupService.cs
+++ b/src/Stripe.net/Services/Topups/TopupService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class TopupService : Service<Topup>,
+    public class TopupService : Service,
         ICreatable<Topup, TopupCreateOptions>,
         IListable<Topup, TopupListOptions>,
         IRetrievable<Topup, TopupGetOptions>,
diff --git a/src/Stripe.net/Services/Topups/TopupUpdateOptions.cs b/src/Stripe.net/Services/Topups/TopupUpdateOptions.cs
index 61f88fc166..8c8e16f3e7 100644
--- a/src/Stripe.net/Services/Topups/TopupUpdateOptions.cs
+++ b/src/Stripe.net/Services/Topups/TopupUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TopupUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -10,6 +13,9 @@ public class TopupUpdateOptions : BaseOptions, IHasMetadata
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class TopupUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TransferReversals/TransferReversalCreateOptions.cs b/src/Stripe.net/Services/TransferReversals/TransferReversalCreateOptions.cs
index 670dec1c08..0208527cad 100644
--- a/src/Stripe.net/Services/TransferReversals/TransferReversalCreateOptions.cs
+++ b/src/Stripe.net/Services/TransferReversals/TransferReversalCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransferReversalCreateOptions : BaseOptions, IHasMetadata
     {
@@ -13,6 +16,9 @@ public class TransferReversalCreateOptions : BaseOptions, IHasMetadata
         /// to the entire transfer amount.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -20,6 +26,9 @@ public class TransferReversalCreateOptions : BaseOptions, IHasMetadata
         /// POST an empty value.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -29,6 +38,9 @@ public class TransferReversalCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -38,6 +50,9 @@ public class TransferReversalCreateOptions : BaseOptions, IHasMetadata
         /// the amount of the transfer reversed.
         /// </summary>
         [JsonProperty("refund_application_fee")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("refund_application_fee")]
+#endif
         public bool? RefundApplicationFee { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/TransferReversals/TransferReversalService.cs b/src/Stripe.net/Services/TransferReversals/TransferReversalService.cs
index 49e7ed266c..3459840b30 100644
--- a/src/Stripe.net/Services/TransferReversals/TransferReversalService.cs
+++ b/src/Stripe.net/Services/TransferReversals/TransferReversalService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class TransferReversalService : ServiceNested<TransferReversal>,
+    public class TransferReversalService : Service,
         INestedCreatable<TransferReversal, TransferReversalCreateOptions>,
         INestedListable<TransferReversal, TransferReversalListOptions>,
         INestedRetrievable<TransferReversal, TransferReversalGetOptions>,
diff --git a/src/Stripe.net/Services/TransferReversals/TransferReversalUpdateOptions.cs b/src/Stripe.net/Services/TransferReversals/TransferReversalUpdateOptions.cs
index 380f1d1c57..8180197067 100644
--- a/src/Stripe.net/Services/TransferReversals/TransferReversalUpdateOptions.cs
+++ b/src/Stripe.net/Services/TransferReversals/TransferReversalUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransferReversalUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -13,6 +16,9 @@ public class TransferReversalUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Transfers/TransferCreateOptions.cs b/src/Stripe.net/Services/Transfers/TransferCreateOptions.cs
index fce7a879c3..0c0b220abc 100644
--- a/src/Stripe.net/Services/Transfers/TransferCreateOptions.cs
+++ b/src/Stripe.net/Services/Transfers/TransferCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransferCreateOptions : BaseOptions, IHasMetadata
     {
@@ -10,6 +13,9 @@ public class TransferCreateOptions : BaseOptions, IHasMetadata
         /// A positive integer in cents (or local equivalent) representing how much to transfer.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -18,12 +24,18 @@ public class TransferCreateOptions : BaseOptions, IHasMetadata
         /// href="https://docs.stripe.com/currencies">supported currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -32,6 +44,9 @@ public class TransferCreateOptions : BaseOptions, IHasMetadata
         /// documentation</a> for details.
         /// </summary>
         [JsonProperty("destination")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination")]
+#endif
         public string Destination { get; set; }
 
         /// <summary>
@@ -41,6 +56,9 @@ public class TransferCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -51,6 +69,9 @@ public class TransferCreateOptions : BaseOptions, IHasMetadata
         /// the Connect documentation</a> for details.
         /// </summary>
         [JsonProperty("source_transaction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source_transaction")]
+#endif
         public string SourceTransaction { get; set; }
 
         /// <summary>
@@ -59,6 +80,9 @@ public class TransferCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>bank_account</c>, <c>card</c>, or <c>fpx</c>.
         /// </summary>
         [JsonProperty("source_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source_type")]
+#endif
         public string SourceType { get; set; }
 
         /// <summary>
@@ -67,6 +91,9 @@ public class TransferCreateOptions : BaseOptions, IHasMetadata
         /// documentation</a> for details.
         /// </summary>
         [JsonProperty("transfer_group")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_group")]
+#endif
         public string TransferGroup { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Transfers/TransferListOptions.cs b/src/Stripe.net/Services/Transfers/TransferListOptions.cs
index 162773aae8..4a2148b63f 100644
--- a/src/Stripe.net/Services/Transfers/TransferListOptions.cs
+++ b/src/Stripe.net/Services/Transfers/TransferListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransferListOptions : ListOptionsWithCreated
     {
@@ -9,12 +12,18 @@ public class TransferListOptions : ListOptionsWithCreated
         /// Only return transfers for the destination specified by this account ID.
         /// </summary>
         [JsonProperty("destination")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination")]
+#endif
         public string Destination { get; set; }
 
         /// <summary>
         /// Only return transfers with the specified transfer group.
         /// </summary>
         [JsonProperty("transfer_group")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transfer_group")]
+#endif
         public string TransferGroup { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Transfers/TransferService.cs b/src/Stripe.net/Services/Transfers/TransferService.cs
index 1b0145c810..9b8f28ab68 100644
--- a/src/Stripe.net/Services/Transfers/TransferService.cs
+++ b/src/Stripe.net/Services/Transfers/TransferService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class TransferService : Service<Transfer>,
+    public class TransferService : Service,
         ICreatable<Transfer, TransferCreateOptions>,
         IListable<Transfer, TransferListOptions>,
         IRetrievable<Transfer, TransferGetOptions>,
diff --git a/src/Stripe.net/Services/Transfers/TransferUpdateOptions.cs b/src/Stripe.net/Services/Transfers/TransferUpdateOptions.cs
index 44eb176f03..862c538923 100644
--- a/src/Stripe.net/Services/Transfers/TransferUpdateOptions.cs
+++ b/src/Stripe.net/Services/Transfers/TransferUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransferUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -10,6 +13,9 @@ public class TransferUpdateOptions : BaseOptions, IHasMetadata
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class TransferUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/CreditReversals/CreditReversalCreateOptions.cs b/src/Stripe.net/Services/Treasury/CreditReversals/CreditReversalCreateOptions.cs
index 4e7453fdf1..2977928f14 100644
--- a/src/Stripe.net/Services/Treasury/CreditReversals/CreditReversalCreateOptions.cs
+++ b/src/Stripe.net/Services/Treasury/CreditReversals/CreditReversalCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Treasury
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditReversalCreateOptions : BaseOptions, IHasMetadata
     {
@@ -13,12 +16,18 @@ public class CreditReversalCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The ReceivedCredit to reverse.
         /// </summary>
         [JsonProperty("received_credit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("received_credit")]
+#endif
         public string ReceivedCredit { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/CreditReversals/CreditReversalListOptions.cs b/src/Stripe.net/Services/Treasury/CreditReversals/CreditReversalListOptions.cs
index 0b97863042..746c45a952 100644
--- a/src/Stripe.net/Services/Treasury/CreditReversals/CreditReversalListOptions.cs
+++ b/src/Stripe.net/Services/Treasury/CreditReversals/CreditReversalListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class CreditReversalListOptions : ListOptions
     {
@@ -9,12 +12,18 @@ public class CreditReversalListOptions : ListOptions
         /// Returns objects associated with this FinancialAccount.
         /// </summary>
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public string FinancialAccount { get; set; }
 
         /// <summary>
         /// Only return CreditReversals for the ReceivedCredit ID.
         /// </summary>
         [JsonProperty("received_credit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("received_credit")]
+#endif
         public string ReceivedCredit { get; set; }
 
         /// <summary>
@@ -22,6 +31,9 @@ public class CreditReversalListOptions : ListOptions
         /// One of: <c>canceled</c>, <c>posted</c>, or <c>processing</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/CreditReversals/CreditReversalService.cs b/src/Stripe.net/Services/Treasury/CreditReversals/CreditReversalService.cs
index 248b110a80..7dfcdf27d3 100644
--- a/src/Stripe.net/Services/Treasury/CreditReversals/CreditReversalService.cs
+++ b/src/Stripe.net/Services/Treasury/CreditReversals/CreditReversalService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Treasury
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class CreditReversalService : Service<CreditReversal>,
+    public class CreditReversalService : Service,
         ICreatable<CreditReversal, CreditReversalCreateOptions>,
         IListable<CreditReversal, CreditReversalListOptions>,
         IRetrievable<CreditReversal, CreditReversalGetOptions>
diff --git a/src/Stripe.net/Services/Treasury/DebitReversals/DebitReversalCreateOptions.cs b/src/Stripe.net/Services/Treasury/DebitReversals/DebitReversalCreateOptions.cs
index 38c8147291..7ead8e4805 100644
--- a/src/Stripe.net/Services/Treasury/DebitReversals/DebitReversalCreateOptions.cs
+++ b/src/Stripe.net/Services/Treasury/DebitReversals/DebitReversalCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Treasury
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DebitReversalCreateOptions : BaseOptions, IHasMetadata
     {
@@ -13,12 +16,18 @@ public class DebitReversalCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The ReceivedDebit to reverse.
         /// </summary>
         [JsonProperty("received_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("received_debit")]
+#endif
         public string ReceivedDebit { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/DebitReversals/DebitReversalListOptions.cs b/src/Stripe.net/Services/Treasury/DebitReversals/DebitReversalListOptions.cs
index 51a7d37df0..ee699b611b 100644
--- a/src/Stripe.net/Services/Treasury/DebitReversals/DebitReversalListOptions.cs
+++ b/src/Stripe.net/Services/Treasury/DebitReversals/DebitReversalListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class DebitReversalListOptions : ListOptions
     {
@@ -9,12 +12,18 @@ public class DebitReversalListOptions : ListOptions
         /// Returns objects associated with this FinancialAccount.
         /// </summary>
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public string FinancialAccount { get; set; }
 
         /// <summary>
         /// Only return DebitReversals for the ReceivedDebit ID.
         /// </summary>
         [JsonProperty("received_debit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("received_debit")]
+#endif
         public string ReceivedDebit { get; set; }
 
         /// <summary>
@@ -22,6 +31,9 @@ public class DebitReversalListOptions : ListOptions
         /// One of: <c>lost</c>, or <c>won</c>.
         /// </summary>
         [JsonProperty("resolution")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("resolution")]
+#endif
         public string Resolution { get; set; }
 
         /// <summary>
@@ -29,6 +41,9 @@ public class DebitReversalListOptions : ListOptions
         /// One of: <c>canceled</c>, <c>completed</c>, or <c>processing</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/DebitReversals/DebitReversalService.cs b/src/Stripe.net/Services/Treasury/DebitReversals/DebitReversalService.cs
index c679cc3ef6..93176a2e67 100644
--- a/src/Stripe.net/Services/Treasury/DebitReversals/DebitReversalService.cs
+++ b/src/Stripe.net/Services/Treasury/DebitReversals/DebitReversalService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Treasury
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class DebitReversalService : Service<DebitReversal>,
+    public class DebitReversalService : Service,
         ICreatable<DebitReversal, DebitReversalCreateOptions>,
         IListable<DebitReversal, DebitReversalListOptions>,
         IRetrievable<DebitReversal, DebitReversalGetOptions>
diff --git a/src/Stripe.net/Services/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesService.cs b/src/Stripe.net/Services/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesService.cs
index fb9f13f8d0..06873b2436 100644
--- a/src/Stripe.net/Services/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesService.cs
+++ b/src/Stripe.net/Services/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesService.cs
@@ -7,7 +7,7 @@ namespace Stripe.Treasury
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class FinancialAccountFeaturesService : ServiceNested<FinancialAccountFeatures>
+    public class FinancialAccountFeaturesService : Service
     {
         public FinancialAccountFeaturesService()
         {
diff --git a/src/Stripe.net/Services/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesUpdateOptions.cs b/src/Stripe.net/Services/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesUpdateOptions.cs
index 64a5a12352..21fb1f9c15 100644
--- a/src/Stripe.net/Services/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesUpdateOptions.cs
+++ b/src/Stripe.net/Services/Treasury/FinancialAccountFeatures/FinancialAccountFeaturesUpdateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesUpdateOptions : BaseOptions
     {
@@ -10,6 +13,9 @@ public class FinancialAccountFeaturesUpdateOptions : BaseOptions
         /// attaching cards to and drawing funds from the FinancialAccount.
         /// </summary>
         [JsonProperty("card_issuing")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_issuing")]
+#endif
         public FinancialAccountFeaturesCardIssuingOptions CardIssuing { get; set; }
 
         /// <summary>
@@ -17,12 +23,18 @@ public class FinancialAccountFeaturesUpdateOptions : BaseOptions
         /// factors determine the insurance amount.
         /// </summary>
         [JsonProperty("deposit_insurance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deposit_insurance")]
+#endif
         public FinancialAccountFeaturesDepositInsuranceOptions DepositInsurance { get; set; }
 
         /// <summary>
         /// Contains Features that add FinancialAddresses to the FinancialAccount.
         /// </summary>
         [JsonProperty("financial_addresses")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_addresses")]
+#endif
         public FinancialAccountFeaturesFinancialAddressesOptions FinancialAddresses { get; set; }
 
         /// <summary>
@@ -30,6 +42,9 @@ public class FinancialAccountFeaturesUpdateOptions : BaseOptions
         /// with the same owner.
         /// </summary>
         [JsonProperty("inbound_transfers")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("inbound_transfers")]
+#endif
         public FinancialAccountFeaturesInboundTransfersOptions InboundTransfers { get; set; }
 
         /// <summary>
@@ -37,6 +52,9 @@ public class FinancialAccountFeaturesUpdateOptions : BaseOptions
         /// other FinancialAccounts (for example, via OutboundPayment).
         /// </summary>
         [JsonProperty("intra_stripe_flows")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("intra_stripe_flows")]
+#endif
         public FinancialAccountFeaturesIntraStripeFlowsOptions IntraStripeFlows { get; set; }
 
         /// <summary>
@@ -44,6 +62,9 @@ public class FinancialAccountFeaturesUpdateOptions : BaseOptions
         /// someone else's bucket of money.
         /// </summary>
         [JsonProperty("outbound_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("outbound_payments")]
+#endif
         public FinancialAccountFeaturesOutboundPaymentsOptions OutboundPayments { get; set; }
 
         /// <summary>
@@ -51,6 +72,9 @@ public class FinancialAccountFeaturesUpdateOptions : BaseOptions
         /// another Account with the same owner.
         /// </summary>
         [JsonProperty("outbound_transfers")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("outbound_transfers")]
+#endif
         public FinancialAccountFeaturesOutboundTransfersOptions OutboundTransfers { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountCloseOptions.cs b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountCloseOptions.cs
index 199bfa465c..576656bb77 100644
--- a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountCloseOptions.cs
+++ b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountCloseOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountCloseOptions : BaseOptions
     {
@@ -10,6 +13,9 @@ public class FinancialAccountCloseOptions : BaseOptions
         /// closing FA's balance to $0.
         /// </summary>
         [JsonProperty("forwarding_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("forwarding_settings")]
+#endif
         public FinancialAccountForwardingSettingsOptions ForwardingSettings { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountCreateOptions.cs b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountCreateOptions.cs
index a8dfb22057..b0067a0b5e 100644
--- a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountCreateOptions.cs
+++ b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Treasury
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountCreateOptions : BaseOptions, IHasMetadata
     {
@@ -11,6 +14,9 @@ public class FinancialAccountCreateOptions : BaseOptions, IHasMetadata
         /// platform can control features via the requested field.
         /// </summary>
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public FinancialAccountFeaturesOptions Features { get; set; }
 
         /// <summary>
@@ -20,24 +26,36 @@ public class FinancialAccountCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The nickname for the FinancialAccount.
         /// </summary>
         [JsonProperty("nickname")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("nickname")]
+#endif
         public string Nickname { get; set; }
 
         /// <summary>
         /// The set of functionalities that the platform can restrict on the FinancialAccount.
         /// </summary>
         [JsonProperty("platform_restrictions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("platform_restrictions")]
+#endif
         public FinancialAccountPlatformRestrictionsOptions PlatformRestrictions { get; set; }
 
         /// <summary>
         /// The currencies the FinancialAccount can hold a balance in.
         /// </summary>
         [JsonProperty("supported_currencies")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("supported_currencies")]
+#endif
         public List<string> SupportedCurrencies { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesCardIssuingOptions.cs b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesCardIssuingOptions.cs
index 88072279ab..46ad4db5d3 100644
--- a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesCardIssuingOptions.cs
+++ b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesCardIssuingOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesCardIssuingOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class FinancialAccountFeaturesCardIssuingOptions : INestedOptions
         /// Whether the FinancialAccount should have the Feature.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesDepositInsuranceOptions.cs b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesDepositInsuranceOptions.cs
index 830403e120..a768868603 100644
--- a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesDepositInsuranceOptions.cs
+++ b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesDepositInsuranceOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesDepositInsuranceOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class FinancialAccountFeaturesDepositInsuranceOptions : INestedOptions
         /// Whether the FinancialAccount should have the Feature.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesFinancialAddressesAbaOptions.cs b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesFinancialAddressesAbaOptions.cs
index 990cc363e8..127e910247 100644
--- a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesFinancialAddressesAbaOptions.cs
+++ b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesFinancialAddressesAbaOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesFinancialAddressesAbaOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class FinancialAccountFeaturesFinancialAddressesAbaOptions : INestedOptio
         /// Whether the FinancialAccount should have the Feature.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesFinancialAddressesOptions.cs b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesFinancialAddressesOptions.cs
index b69229af83..8432dc5b08 100644
--- a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesFinancialAddressesOptions.cs
+++ b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesFinancialAddressesOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesFinancialAddressesOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class FinancialAccountFeaturesFinancialAddressesOptions : INestedOptions
         /// Adds an ABA FinancialAddress to the FinancialAccount.
         /// </summary>
         [JsonProperty("aba")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("aba")]
+#endif
         public FinancialAccountFeaturesFinancialAddressesAbaOptions Aba { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesInboundTransfersAchOptions.cs b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesInboundTransfersAchOptions.cs
index b34e1b2444..bef31c721b 100644
--- a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesInboundTransfersAchOptions.cs
+++ b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesInboundTransfersAchOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesInboundTransfersAchOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class FinancialAccountFeaturesInboundTransfersAchOptions : INestedOptions
         /// Whether the FinancialAccount should have the Feature.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesInboundTransfersOptions.cs b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesInboundTransfersOptions.cs
index 62c1571ada..7202f3a00c 100644
--- a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesInboundTransfersOptions.cs
+++ b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesInboundTransfersOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesInboundTransfersOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class FinancialAccountFeaturesInboundTransfersOptions : INestedOptions
         /// Enables ACH Debits via the InboundTransfers API.
         /// </summary>
         [JsonProperty("ach")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ach")]
+#endif
         public FinancialAccountFeaturesInboundTransfersAchOptions Ach { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesIntraStripeFlowsOptions.cs b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesIntraStripeFlowsOptions.cs
index 50faeb4adc..7565d0b4d7 100644
--- a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesIntraStripeFlowsOptions.cs
+++ b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesIntraStripeFlowsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesIntraStripeFlowsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class FinancialAccountFeaturesIntraStripeFlowsOptions : INestedOptions
         /// Whether the FinancialAccount should have the Feature.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesOptions.cs b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesOptions.cs
index 5aa88dee99..799f9fb52d 100644
--- a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesOptions.cs
+++ b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class FinancialAccountFeaturesOptions : INestedOptions
         /// attaching cards to and drawing funds from the FinancialAccount.
         /// </summary>
         [JsonProperty("card_issuing")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("card_issuing")]
+#endif
         public FinancialAccountFeaturesCardIssuingOptions CardIssuing { get; set; }
 
         /// <summary>
@@ -17,12 +23,18 @@ public class FinancialAccountFeaturesOptions : INestedOptions
         /// factors determine the insurance amount.
         /// </summary>
         [JsonProperty("deposit_insurance")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("deposit_insurance")]
+#endif
         public FinancialAccountFeaturesDepositInsuranceOptions DepositInsurance { get; set; }
 
         /// <summary>
         /// Contains Features that add FinancialAddresses to the FinancialAccount.
         /// </summary>
         [JsonProperty("financial_addresses")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_addresses")]
+#endif
         public FinancialAccountFeaturesFinancialAddressesOptions FinancialAddresses { get; set; }
 
         /// <summary>
@@ -30,6 +42,9 @@ public class FinancialAccountFeaturesOptions : INestedOptions
         /// with the same owner.
         /// </summary>
         [JsonProperty("inbound_transfers")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("inbound_transfers")]
+#endif
         public FinancialAccountFeaturesInboundTransfersOptions InboundTransfers { get; set; }
 
         /// <summary>
@@ -37,6 +52,9 @@ public class FinancialAccountFeaturesOptions : INestedOptions
         /// other FinancialAccounts (for example, via OutboundPayment).
         /// </summary>
         [JsonProperty("intra_stripe_flows")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("intra_stripe_flows")]
+#endif
         public FinancialAccountFeaturesIntraStripeFlowsOptions IntraStripeFlows { get; set; }
 
         /// <summary>
@@ -44,6 +62,9 @@ public class FinancialAccountFeaturesOptions : INestedOptions
         /// someone else's bucket of money.
         /// </summary>
         [JsonProperty("outbound_payments")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("outbound_payments")]
+#endif
         public FinancialAccountFeaturesOutboundPaymentsOptions OutboundPayments { get; set; }
 
         /// <summary>
@@ -51,6 +72,9 @@ public class FinancialAccountFeaturesOptions : INestedOptions
         /// another Account with the same owner.
         /// </summary>
         [JsonProperty("outbound_transfers")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("outbound_transfers")]
+#endif
         public FinancialAccountFeaturesOutboundTransfersOptions OutboundTransfers { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesOutboundPaymentsAchOptions.cs b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesOutboundPaymentsAchOptions.cs
index 714b1745d0..88b41266c0 100644
--- a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesOutboundPaymentsAchOptions.cs
+++ b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesOutboundPaymentsAchOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesOutboundPaymentsAchOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class FinancialAccountFeaturesOutboundPaymentsAchOptions : INestedOptions
         /// Whether the FinancialAccount should have the Feature.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesOutboundPaymentsOptions.cs b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesOutboundPaymentsOptions.cs
index ef06af9432..0580b837b7 100644
--- a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesOutboundPaymentsOptions.cs
+++ b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesOutboundPaymentsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesOutboundPaymentsOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class FinancialAccountFeaturesOutboundPaymentsOptions : INestedOptions
         /// Enables ACH transfers via the OutboundPayments API.
         /// </summary>
         [JsonProperty("ach")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ach")]
+#endif
         public FinancialAccountFeaturesOutboundPaymentsAchOptions Ach { get; set; }
 
         /// <summary>
         /// Enables US domestic wire transfers via the OutboundPayments API.
         /// </summary>
         [JsonProperty("us_domestic_wire")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_domestic_wire")]
+#endif
         public FinancialAccountFeaturesOutboundPaymentsUsDomesticWireOptions UsDomesticWire { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesOutboundPaymentsUsDomesticWireOptions.cs b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesOutboundPaymentsUsDomesticWireOptions.cs
index 359e6ac425..055a13cd93 100644
--- a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesOutboundPaymentsUsDomesticWireOptions.cs
+++ b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesOutboundPaymentsUsDomesticWireOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesOutboundPaymentsUsDomesticWireOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class FinancialAccountFeaturesOutboundPaymentsUsDomesticWireOptions : INe
         /// Whether the FinancialAccount should have the Feature.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesOutboundTransfersAchOptions.cs b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesOutboundTransfersAchOptions.cs
index 9e8432ce87..ca0ddbe2c7 100644
--- a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesOutboundTransfersAchOptions.cs
+++ b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesOutboundTransfersAchOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesOutboundTransfersAchOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class FinancialAccountFeaturesOutboundTransfersAchOptions : INestedOption
         /// Whether the FinancialAccount should have the Feature.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesOutboundTransfersOptions.cs b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesOutboundTransfersOptions.cs
index 8bbe8b8294..cb7429ac17 100644
--- a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesOutboundTransfersOptions.cs
+++ b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesOutboundTransfersOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesOutboundTransfersOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class FinancialAccountFeaturesOutboundTransfersOptions : INestedOptions
         /// Enables ACH transfers via the OutboundTransfers API.
         /// </summary>
         [JsonProperty("ach")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ach")]
+#endif
         public FinancialAccountFeaturesOutboundTransfersAchOptions Ach { get; set; }
 
         /// <summary>
         /// Enables US domestic wire transfers via the OutboundTransfers API.
         /// </summary>
         [JsonProperty("us_domestic_wire")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_domestic_wire")]
+#endif
         public FinancialAccountFeaturesOutboundTransfersUsDomesticWireOptions UsDomesticWire { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesOutboundTransfersUsDomesticWireOptions.cs b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesOutboundTransfersUsDomesticWireOptions.cs
index a8155c7cd6..f266f00d89 100644
--- a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesOutboundTransfersUsDomesticWireOptions.cs
+++ b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountFeaturesOutboundTransfersUsDomesticWireOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountFeaturesOutboundTransfersUsDomesticWireOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class FinancialAccountFeaturesOutboundTransfersUsDomesticWireOptions : IN
         /// Whether the FinancialAccount should have the Feature.
         /// </summary>
         [JsonProperty("requested")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("requested")]
+#endif
         public bool? Requested { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountForwardingSettingsOptions.cs b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountForwardingSettingsOptions.cs
index 3587e461f5..6791776a13 100644
--- a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountForwardingSettingsOptions.cs
+++ b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountForwardingSettingsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountForwardingSettingsOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class FinancialAccountForwardingSettingsOptions : INestedOptions
         /// The financial_account id.
         /// </summary>
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public string FinancialAccount { get; set; }
 
         /// <summary>
         /// The payment_method or bank account id. This needs to be a verified bank account.
         /// </summary>
         [JsonProperty("payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payment_method")]
+#endif
         public string PaymentMethod { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class FinancialAccountForwardingSettingsOptions : INestedOptions
         /// One of: <c>financial_account</c>, or <c>payment_method</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountPlatformRestrictionsOptions.cs b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountPlatformRestrictionsOptions.cs
index afdf264725..eab0224b8f 100644
--- a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountPlatformRestrictionsOptions.cs
+++ b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountPlatformRestrictionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountPlatformRestrictionsOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class FinancialAccountPlatformRestrictionsOptions : INestedOptions
         /// One of: <c>restricted</c>, or <c>unrestricted</c>.
         /// </summary>
         [JsonProperty("inbound_flows")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("inbound_flows")]
+#endif
         public string InboundFlows { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class FinancialAccountPlatformRestrictionsOptions : INestedOptions
         /// One of: <c>restricted</c>, or <c>unrestricted</c>.
         /// </summary>
         [JsonProperty("outbound_flows")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("outbound_flows")]
+#endif
         public string OutboundFlows { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountService.cs b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountService.cs
index c6df5b25d9..8601b2e0e5 100644
--- a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountService.cs
+++ b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Treasury
     using System.Threading;
     using System.Threading.Tasks;
 
-    public partial class FinancialAccountService : Service<FinancialAccount>,
+    public partial class FinancialAccountService : Service,
         ICreatable<FinancialAccount, FinancialAccountCreateOptions>,
         IListable<FinancialAccount, FinancialAccountListOptions>,
         IRetrievable<FinancialAccount, FinancialAccountGetOptions>,
diff --git a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountUpdateOptions.cs b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountUpdateOptions.cs
index b0fc824113..fd9ef1b86d 100644
--- a/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountUpdateOptions.cs
+++ b/src/Stripe.net/Services/Treasury/FinancialAccounts/FinancialAccountUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Treasury
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class FinancialAccountUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -12,6 +15,9 @@ public class FinancialAccountUpdateOptions : BaseOptions, IHasMetadata
         /// via the requested field.
         /// </summary>
         [JsonProperty("features")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("features")]
+#endif
         public FinancialAccountFeaturesOptions Features { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class FinancialAccountUpdateOptions : BaseOptions, IHasMetadata
         /// closing FA's balance to $0.
         /// </summary>
         [JsonProperty("forwarding_settings")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("forwarding_settings")]
+#endif
         public FinancialAccountForwardingSettingsOptions ForwardingSettings { get; set; }
 
         /// <summary>
@@ -28,18 +37,27 @@ public class FinancialAccountUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The nickname for the FinancialAccount.
         /// </summary>
         [JsonProperty("nickname")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("nickname")]
+#endif
         public string Nickname { get; set; }
 
         /// <summary>
         /// The set of functionalities that the platform can restrict on the FinancialAccount.
         /// </summary>
         [JsonProperty("platform_restrictions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("platform_restrictions")]
+#endif
         public FinancialAccountPlatformRestrictionsOptions PlatformRestrictions { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/InboundTransfers/InboundTransferCreateOptions.cs b/src/Stripe.net/Services/Treasury/InboundTransfers/InboundTransferCreateOptions.cs
index 8c06b240a1..cd490d3043 100644
--- a/src/Stripe.net/Services/Treasury/InboundTransfers/InboundTransferCreateOptions.cs
+++ b/src/Stripe.net/Services/Treasury/InboundTransfers/InboundTransferCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Treasury
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InboundTransferCreateOptions : BaseOptions, IHasMetadata
     {
@@ -10,6 +13,9 @@ public class InboundTransferCreateOptions : BaseOptions, IHasMetadata
         /// Amount (in cents) to be transferred.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -18,18 +24,27 @@ public class InboundTransferCreateOptions : BaseOptions, IHasMetadata
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// The FinancialAccount to send funds to.
         /// </summary>
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public string FinancialAccount { get; set; }
 
         /// <summary>
@@ -39,12 +54,18 @@ public class InboundTransferCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The origin payment method to be debited for the InboundTransfer.
         /// </summary>
         [JsonProperty("origin_payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("origin_payment_method")]
+#endif
         public string OriginPaymentMethod { get; set; }
 
         /// <summary>
@@ -52,6 +73,9 @@ public class InboundTransferCreateOptions : BaseOptions, IHasMetadata
         /// characters.
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/InboundTransfers/InboundTransferListOptions.cs b/src/Stripe.net/Services/Treasury/InboundTransfers/InboundTransferListOptions.cs
index 2e2da08296..2f48d2cc46 100644
--- a/src/Stripe.net/Services/Treasury/InboundTransfers/InboundTransferListOptions.cs
+++ b/src/Stripe.net/Services/Treasury/InboundTransfers/InboundTransferListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class InboundTransferListOptions : ListOptions
     {
@@ -9,6 +12,9 @@ public class InboundTransferListOptions : ListOptions
         /// Returns objects associated with this FinancialAccount.
         /// </summary>
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public string FinancialAccount { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class InboundTransferListOptions : ListOptions
         /// One of: <c>canceled</c>, <c>failed</c>, <c>processing</c>, or <c>succeeded</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/InboundTransfers/InboundTransferService.cs b/src/Stripe.net/Services/Treasury/InboundTransfers/InboundTransferService.cs
index fc654c860f..72e5b730b3 100644
--- a/src/Stripe.net/Services/Treasury/InboundTransfers/InboundTransferService.cs
+++ b/src/Stripe.net/Services/Treasury/InboundTransfers/InboundTransferService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Treasury
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class InboundTransferService : Service<InboundTransfer>,
+    public class InboundTransferService : Service,
         ICreatable<InboundTransfer, InboundTransferCreateOptions>,
         IListable<InboundTransfer, InboundTransferListOptions>,
         IRetrievable<InboundTransfer, InboundTransferGetOptions>
diff --git a/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentCreateOptions.cs b/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentCreateOptions.cs
index 4a3f30f915..a2565c901a 100644
--- a/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentCreateOptions.cs
+++ b/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Treasury
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundPaymentCreateOptions : BaseOptions, IHasMetadata
     {
@@ -10,6 +13,9 @@ public class OutboundPaymentCreateOptions : BaseOptions, IHasMetadata
         /// Amount (in cents) to be transferred.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class OutboundPaymentCreateOptions : BaseOptions, IHasMetadata
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
@@ -25,12 +34,18 @@ public class OutboundPaymentCreateOptions : BaseOptions, IHasMetadata
         /// to the <c>destination_payment_method</c> passed in.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -38,6 +53,9 @@ public class OutboundPaymentCreateOptions : BaseOptions, IHasMetadata
         /// with <c>destination_payment_method_data</c>.
         /// </summary>
         [JsonProperty("destination_payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination_payment_method")]
+#endif
         public string DestinationPaymentMethod { get; set; }
 
         /// <summary>
@@ -45,24 +63,36 @@ public class OutboundPaymentCreateOptions : BaseOptions, IHasMetadata
         /// with <c>destination_payment_method</c>.
         /// </summary>
         [JsonProperty("destination_payment_method_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination_payment_method_data")]
+#endif
         public OutboundPaymentDestinationPaymentMethodDataOptions DestinationPaymentMethodData { get; set; }
 
         /// <summary>
         /// Payment method-specific configuration for this OutboundPayment.
         /// </summary>
         [JsonProperty("destination_payment_method_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination_payment_method_options")]
+#endif
         public OutboundPaymentDestinationPaymentMethodOptionsOptions DestinationPaymentMethodOptions { get; set; }
 
         /// <summary>
         /// End user details.
         /// </summary>
         [JsonProperty("end_user_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("end_user_details")]
+#endif
         public OutboundPaymentEndUserDetailsOptions EndUserDetails { get; set; }
 
         /// <summary>
         /// The FinancialAccount to pull funds from.
         /// </summary>
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public string FinancialAccount { get; set; }
 
         /// <summary>
@@ -72,6 +102,9 @@ public class OutboundPaymentCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -81,6 +114,9 @@ public class OutboundPaymentCreateOptions : BaseOptions, IHasMetadata
         /// <c>stripe</c> network transfers. The default value is "payment".
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodDataBillingDetailsOptions.cs b/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodDataBillingDetailsOptions.cs
index 09b7a97452..91dad2b6bc 100644
--- a/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodDataBillingDetailsOptions.cs
+++ b/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodDataBillingDetailsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundPaymentDestinationPaymentMethodDataBillingDetailsOptions : INestedOptions
     {
@@ -9,24 +12,36 @@ public class OutboundPaymentDestinationPaymentMethodDataBillingDetailsOptions :
         /// Billing address.
         /// </summary>
         [JsonProperty("address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("address")]
+#endif
         public AddressOptions Address { get; set; }
 
         /// <summary>
         /// Email address.
         /// </summary>
         [JsonProperty("email")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("email")]
+#endif
         public string Email { get; set; }
 
         /// <summary>
         /// Full name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// Billing phone number (including extension).
         /// </summary>
         [JsonProperty("phone")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("phone")]
+#endif
         public string Phone { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodDataOptions.cs b/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodDataOptions.cs
index 65f6506cbd..308d9b384b 100644
--- a/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodDataOptions.cs
+++ b/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodDataOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Treasury
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundPaymentDestinationPaymentMethodDataOptions : INestedOptions, IHasMetadata
     {
@@ -11,6 +14,9 @@ public class OutboundPaymentDestinationPaymentMethodDataOptions : INestedOptions
         /// particular types of payment methods.
         /// </summary>
         [JsonProperty("billing_details")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("billing_details")]
+#endif
         public OutboundPaymentDestinationPaymentMethodDataBillingDetailsOptions BillingDetails { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class OutboundPaymentDestinationPaymentMethodDataOptions : INestedOptions
         /// funds to.
         /// </summary>
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public string FinancialAccount { get; set; }
 
         /// <summary>
@@ -27,6 +36,9 @@ public class OutboundPaymentDestinationPaymentMethodDataOptions : INestedOptions
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -36,12 +48,18 @@ public class OutboundPaymentDestinationPaymentMethodDataOptions : INestedOptions
         /// One of: <c>financial_account</c>, or <c>us_bank_account</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
         /// Required hash if type is set to <c>us_bank_account</c>.
         /// </summary>
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public OutboundPaymentDestinationPaymentMethodDataUsBankAccountOptions UsBankAccount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodDataUsBankAccountOptions.cs b/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodDataUsBankAccountOptions.cs
index 5bf572e658..6a4506531e 100644
--- a/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodDataUsBankAccountOptions.cs
+++ b/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodDataUsBankAccountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundPaymentDestinationPaymentMethodDataUsBankAccountOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class OutboundPaymentDestinationPaymentMethodDataUsBankAccountOptions : I
         /// One of: <c>company</c>, or <c>individual</c>.
         /// </summary>
         [JsonProperty("account_holder_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_type")]
+#endif
         public string AccountHolderType { get; set; }
 
         /// <summary>
         /// Account number of the bank account.
         /// </summary>
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         /// <summary>
@@ -23,18 +32,27 @@ public class OutboundPaymentDestinationPaymentMethodDataUsBankAccountOptions : I
         /// One of: <c>checking</c>, or <c>savings</c>.
         /// </summary>
         [JsonProperty("account_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_type")]
+#endif
         public string AccountType { get; set; }
 
         /// <summary>
         /// The ID of a Financial Connections Account to use as a payment method.
         /// </summary>
         [JsonProperty("financial_connections_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_connections_account")]
+#endif
         public string FinancialConnectionsAccount { get; set; }
 
         /// <summary>
         /// Routing number of the bank account.
         /// </summary>
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodOptionsOptions.cs b/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodOptionsOptions.cs
index c75344cfcf..1722c893e3 100644
--- a/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodOptionsOptions.cs
+++ b/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundPaymentDestinationPaymentMethodOptionsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class OutboundPaymentDestinationPaymentMethodOptionsOptions : INestedOpti
         /// Optional fields for <c>us_bank_account</c>.
         /// </summary>
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public OutboundPaymentDestinationPaymentMethodOptionsUsBankAccountOptions UsBankAccount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodOptionsUsBankAccountOptions.cs b/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodOptionsUsBankAccountOptions.cs
index 3fb282f112..392f79b950 100644
--- a/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodOptionsUsBankAccountOptions.cs
+++ b/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentDestinationPaymentMethodOptionsUsBankAccountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundPaymentDestinationPaymentMethodOptionsUsBankAccountOptions : INestedOptions
     {
@@ -13,6 +16,9 @@ public class OutboundPaymentDestinationPaymentMethodOptionsUsBankAccountOptions
         /// One of: <c>ach</c>, or <c>us_domestic_wire</c>.
         /// </summary>
         [JsonProperty("network")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network")]
+#endif
         public string Network { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentEndUserDetailsOptions.cs b/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentEndUserDetailsOptions.cs
index 16dc5438a0..0cda67c04e 100644
--- a/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentEndUserDetailsOptions.cs
+++ b/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentEndUserDetailsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundPaymentEndUserDetailsOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class OutboundPaymentEndUserDetailsOptions : INestedOptions
         /// <c>present</c> is set to <c>true</c>.
         /// </summary>
         [JsonProperty("ip_address")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ip_address")]
+#endif
         public string IpAddress { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class OutboundPaymentEndUserDetailsOptions : INestedOptions
         /// user by a platform. Otherwise, <c>false</c>.
         /// </summary>
         [JsonProperty("present")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("present")]
+#endif
         public bool? Present { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentListOptions.cs b/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentListOptions.cs
index 6a1b64b4b2..166f7adac8 100644
--- a/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentListOptions.cs
+++ b/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundPaymentListOptions : ListOptionsWithCreated
     {
@@ -9,12 +12,18 @@ public class OutboundPaymentListOptions : ListOptionsWithCreated
         /// Only return OutboundPayments sent to this customer.
         /// </summary>
         [JsonProperty("customer")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("customer")]
+#endif
         public string Customer { get; set; }
 
         /// <summary>
         /// Returns objects associated with this FinancialAccount.
         /// </summary>
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public string FinancialAccount { get; set; }
 
         /// <summary>
@@ -24,6 +33,9 @@ public class OutboundPaymentListOptions : ListOptionsWithCreated
         /// <c>returned</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentService.cs b/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentService.cs
index a31b231eea..194d64e867 100644
--- a/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentService.cs
+++ b/src/Stripe.net/Services/Treasury/OutboundPayments/OutboundPaymentService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Treasury
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class OutboundPaymentService : Service<OutboundPayment>,
+    public class OutboundPaymentService : Service,
         ICreatable<OutboundPayment, OutboundPaymentCreateOptions>,
         IListable<OutboundPayment, OutboundPaymentListOptions>,
         IRetrievable<OutboundPayment, OutboundPaymentGetOptions>
diff --git a/src/Stripe.net/Services/Treasury/OutboundTransfers/OutboundTransferCreateOptions.cs b/src/Stripe.net/Services/Treasury/OutboundTransfers/OutboundTransferCreateOptions.cs
index 4227b2a5e1..f8c49c56ef 100644
--- a/src/Stripe.net/Services/Treasury/OutboundTransfers/OutboundTransferCreateOptions.cs
+++ b/src/Stripe.net/Services/Treasury/OutboundTransfers/OutboundTransferCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.Treasury
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundTransferCreateOptions : BaseOptions, IHasMetadata
     {
@@ -10,6 +13,9 @@ public class OutboundTransferCreateOptions : BaseOptions, IHasMetadata
         /// Amount (in cents) to be transferred.
         /// </summary>
         [JsonProperty("amount")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amount")]
+#endif
         public long? Amount { get; set; }
 
         /// <summary>
@@ -18,18 +24,27 @@ public class OutboundTransferCreateOptions : BaseOptions, IHasMetadata
         /// currency</a>.
         /// </summary>
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         /// <summary>
         /// An arbitrary string attached to the object. Often useful for displaying to users.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// The PaymentMethod to use as the payment instrument for the OutboundTransfer.
         /// </summary>
         [JsonProperty("destination_payment_method")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination_payment_method")]
+#endif
         public string DestinationPaymentMethod { get; set; }
 
         /// <summary>
@@ -37,18 +52,27 @@ public class OutboundTransferCreateOptions : BaseOptions, IHasMetadata
         /// with <c>destination_payment_method</c>.
         /// </summary>
         [JsonProperty("destination_payment_method_data")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination_payment_method_data")]
+#endif
         public OutboundTransferDestinationPaymentMethodDataOptions DestinationPaymentMethodData { get; set; }
 
         /// <summary>
         /// Hash describing payment method configuration details.
         /// </summary>
         [JsonProperty("destination_payment_method_options")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("destination_payment_method_options")]
+#endif
         public OutboundTransferDestinationPaymentMethodOptionsOptions DestinationPaymentMethodOptions { get; set; }
 
         /// <summary>
         /// The FinancialAccount to pull funds from.
         /// </summary>
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public string FinancialAccount { get; set; }
 
         /// <summary>
@@ -58,6 +82,9 @@ public class OutboundTransferCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
@@ -66,6 +93,9 @@ public class OutboundTransferCreateOptions : BaseOptions, IHasMetadata
         /// transfers. The default value is "transfer".
         /// </summary>
         [JsonProperty("statement_descriptor")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("statement_descriptor")]
+#endif
         public string StatementDescriptor { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/OutboundTransfers/OutboundTransferDestinationPaymentMethodDataOptions.cs b/src/Stripe.net/Services/Treasury/OutboundTransfers/OutboundTransferDestinationPaymentMethodDataOptions.cs
index 8812fea2bd..17794e4ace 100644
--- a/src/Stripe.net/Services/Treasury/OutboundTransfers/OutboundTransferDestinationPaymentMethodDataOptions.cs
+++ b/src/Stripe.net/Services/Treasury/OutboundTransfers/OutboundTransferDestinationPaymentMethodDataOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundTransferDestinationPaymentMethodDataOptions : INestedOptions
     {
@@ -10,12 +13,18 @@ public class OutboundTransferDestinationPaymentMethodDataOptions : INestedOption
         /// funds to.
         /// </summary>
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public string FinancialAccount { get; set; }
 
         /// <summary>
         /// The type of the destination.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/OutboundTransfers/OutboundTransferDestinationPaymentMethodOptionsOptions.cs b/src/Stripe.net/Services/Treasury/OutboundTransfers/OutboundTransferDestinationPaymentMethodOptionsOptions.cs
index 12fd5ce614..cd8a7734f3 100644
--- a/src/Stripe.net/Services/Treasury/OutboundTransfers/OutboundTransferDestinationPaymentMethodOptionsOptions.cs
+++ b/src/Stripe.net/Services/Treasury/OutboundTransfers/OutboundTransferDestinationPaymentMethodOptionsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundTransferDestinationPaymentMethodOptionsOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class OutboundTransferDestinationPaymentMethodOptionsOptions : INestedOpt
         /// Optional fields for <c>us_bank_account</c>.
         /// </summary>
         [JsonProperty("us_bank_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("us_bank_account")]
+#endif
         public OutboundTransferDestinationPaymentMethodOptionsUsBankAccountOptions UsBankAccount { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/OutboundTransfers/OutboundTransferDestinationPaymentMethodOptionsUsBankAccountOptions.cs b/src/Stripe.net/Services/Treasury/OutboundTransfers/OutboundTransferDestinationPaymentMethodOptionsUsBankAccountOptions.cs
index d5c1281acd..51a563c839 100644
--- a/src/Stripe.net/Services/Treasury/OutboundTransfers/OutboundTransferDestinationPaymentMethodOptionsUsBankAccountOptions.cs
+++ b/src/Stripe.net/Services/Treasury/OutboundTransfers/OutboundTransferDestinationPaymentMethodOptionsUsBankAccountOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundTransferDestinationPaymentMethodOptionsUsBankAccountOptions : INestedOptions
     {
@@ -13,6 +16,9 @@ public class OutboundTransferDestinationPaymentMethodOptionsUsBankAccountOptions
         /// One of: <c>ach</c>, or <c>us_domestic_wire</c>.
         /// </summary>
         [JsonProperty("network")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("network")]
+#endif
         public string Network { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/OutboundTransfers/OutboundTransferListOptions.cs b/src/Stripe.net/Services/Treasury/OutboundTransfers/OutboundTransferListOptions.cs
index 98c3b3c6f2..629f782a5f 100644
--- a/src/Stripe.net/Services/Treasury/OutboundTransfers/OutboundTransferListOptions.cs
+++ b/src/Stripe.net/Services/Treasury/OutboundTransfers/OutboundTransferListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class OutboundTransferListOptions : ListOptions
     {
@@ -9,6 +12,9 @@ public class OutboundTransferListOptions : ListOptions
         /// Returns objects associated with this FinancialAccount.
         /// </summary>
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public string FinancialAccount { get; set; }
 
         /// <summary>
@@ -18,6 +24,9 @@ public class OutboundTransferListOptions : ListOptions
         /// <c>returned</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/OutboundTransfers/OutboundTransferService.cs b/src/Stripe.net/Services/Treasury/OutboundTransfers/OutboundTransferService.cs
index 6bc917c81d..c9b695a08e 100644
--- a/src/Stripe.net/Services/Treasury/OutboundTransfers/OutboundTransferService.cs
+++ b/src/Stripe.net/Services/Treasury/OutboundTransfers/OutboundTransferService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Treasury
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class OutboundTransferService : Service<OutboundTransfer>,
+    public class OutboundTransferService : Service,
         ICreatable<OutboundTransfer, OutboundTransferCreateOptions>,
         IListable<OutboundTransfer, OutboundTransferListOptions>,
         IRetrievable<OutboundTransfer, OutboundTransferGetOptions>
diff --git a/src/Stripe.net/Services/Treasury/ReceivedCredits/ReceivedCreditLinkedFlowsOptions.cs b/src/Stripe.net/Services/Treasury/ReceivedCredits/ReceivedCreditLinkedFlowsOptions.cs
index a21d9753af..06cb5ff207 100644
--- a/src/Stripe.net/Services/Treasury/ReceivedCredits/ReceivedCreditLinkedFlowsOptions.cs
+++ b/src/Stripe.net/Services/Treasury/ReceivedCredits/ReceivedCreditLinkedFlowsOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReceivedCreditLinkedFlowsOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class ReceivedCreditLinkedFlowsOptions : INestedOptions
         /// <c>outbound_transfer</c>, or <c>payout</c>.
         /// </summary>
         [JsonProperty("source_flow_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("source_flow_type")]
+#endif
         public string SourceFlowType { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/ReceivedCredits/ReceivedCreditListOptions.cs b/src/Stripe.net/Services/Treasury/ReceivedCredits/ReceivedCreditListOptions.cs
index bc14ad1673..cd6cc79a6b 100644
--- a/src/Stripe.net/Services/Treasury/ReceivedCredits/ReceivedCreditListOptions.cs
+++ b/src/Stripe.net/Services/Treasury/ReceivedCredits/ReceivedCreditListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReceivedCreditListOptions : ListOptions
     {
@@ -9,12 +12,18 @@ public class ReceivedCreditListOptions : ListOptions
         /// The FinancialAccount that received the funds.
         /// </summary>
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public string FinancialAccount { get; set; }
 
         /// <summary>
         /// Only return ReceivedCredits described by the flow.
         /// </summary>
         [JsonProperty("linked_flows")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("linked_flows")]
+#endif
         public ReceivedCreditLinkedFlowsOptions LinkedFlows { get; set; }
 
         /// <summary>
@@ -23,6 +32,9 @@ public class ReceivedCreditListOptions : ListOptions
         /// One of: <c>failed</c>, or <c>succeeded</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/ReceivedCredits/ReceivedCreditService.cs b/src/Stripe.net/Services/Treasury/ReceivedCredits/ReceivedCreditService.cs
index e53849115a..10b756bcbf 100644
--- a/src/Stripe.net/Services/Treasury/ReceivedCredits/ReceivedCreditService.cs
+++ b/src/Stripe.net/Services/Treasury/ReceivedCredits/ReceivedCreditService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Treasury
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class ReceivedCreditService : Service<ReceivedCredit>,
+    public class ReceivedCreditService : Service,
         IListable<ReceivedCredit, ReceivedCreditListOptions>,
         IRetrievable<ReceivedCredit, ReceivedCreditGetOptions>
     {
diff --git a/src/Stripe.net/Services/Treasury/ReceivedDebits/ReceivedDebitListOptions.cs b/src/Stripe.net/Services/Treasury/ReceivedDebits/ReceivedDebitListOptions.cs
index f918c802fd..1cc91ddd0d 100644
--- a/src/Stripe.net/Services/Treasury/ReceivedDebits/ReceivedDebitListOptions.cs
+++ b/src/Stripe.net/Services/Treasury/ReceivedDebits/ReceivedDebitListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ReceivedDebitListOptions : ListOptions
     {
@@ -9,6 +12,9 @@ public class ReceivedDebitListOptions : ListOptions
         /// The FinancialAccount that funds were pulled from.
         /// </summary>
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public string FinancialAccount { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class ReceivedDebitListOptions : ListOptions
         /// One of: <c>failed</c>, or <c>succeeded</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/ReceivedDebits/ReceivedDebitService.cs b/src/Stripe.net/Services/Treasury/ReceivedDebits/ReceivedDebitService.cs
index 79919d47f0..97f83503d2 100644
--- a/src/Stripe.net/Services/Treasury/ReceivedDebits/ReceivedDebitService.cs
+++ b/src/Stripe.net/Services/Treasury/ReceivedDebits/ReceivedDebitService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Treasury
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class ReceivedDebitService : Service<ReceivedDebit>,
+    public class ReceivedDebitService : Service,
         IListable<ReceivedDebit, ReceivedDebitListOptions>,
         IRetrievable<ReceivedDebit, ReceivedDebitGetOptions>
     {
diff --git a/src/Stripe.net/Services/Treasury/TransactionEntries/TransactionEntryListOptions.cs b/src/Stripe.net/Services/Treasury/TransactionEntries/TransactionEntryListOptions.cs
index 9851330184..b028838317 100644
--- a/src/Stripe.net/Services/Treasury/TransactionEntries/TransactionEntryListOptions.cs
+++ b/src/Stripe.net/Services/Treasury/TransactionEntries/TransactionEntryListOptions.cs
@@ -4,17 +4,27 @@ namespace Stripe.Treasury
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionEntryListOptions : ListOptionsWithCreated
     {
         [JsonProperty("effective_at")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("effective_at")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, DateRangeOptions> EffectiveAt { get; set; }
 
         /// <summary>
         /// Returns objects associated with this FinancialAccount.
         /// </summary>
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public string FinancialAccount { get; set; }
 
         /// <summary>
@@ -23,12 +33,18 @@ public class TransactionEntryListOptions : ListOptionsWithCreated
         /// One of: <c>created</c>, or <c>effective_at</c>.
         /// </summary>
         [JsonProperty("order_by")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("order_by")]
+#endif
         public string OrderBy { get; set; }
 
         /// <summary>
         /// Only return TransactionEntries associated with this Transaction.
         /// </summary>
         [JsonProperty("transaction")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("transaction")]
+#endif
         public string Transaction { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/TransactionEntries/TransactionEntryService.cs b/src/Stripe.net/Services/Treasury/TransactionEntries/TransactionEntryService.cs
index 9342293b60..6e8b8adafa 100644
--- a/src/Stripe.net/Services/Treasury/TransactionEntries/TransactionEntryService.cs
+++ b/src/Stripe.net/Services/Treasury/TransactionEntries/TransactionEntryService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Treasury
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class TransactionEntryService : Service<TransactionEntry>,
+    public class TransactionEntryService : Service,
         IListable<TransactionEntry, TransactionEntryListOptions>,
         IRetrievable<TransactionEntry, TransactionEntryGetOptions>
     {
diff --git a/src/Stripe.net/Services/Treasury/Transactions/TransactionListOptions.cs b/src/Stripe.net/Services/Treasury/Transactions/TransactionListOptions.cs
index f68b56dec2..2e47b8d46d 100644
--- a/src/Stripe.net/Services/Treasury/Transactions/TransactionListOptions.cs
+++ b/src/Stripe.net/Services/Treasury/Transactions/TransactionListOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.Treasury
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionListOptions : ListOptionsWithCreated
     {
@@ -9,6 +12,9 @@ public class TransactionListOptions : ListOptionsWithCreated
         /// Returns objects associated with this FinancialAccount.
         /// </summary>
         [JsonProperty("financial_account")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("financial_account")]
+#endif
         public string FinancialAccount { get; set; }
 
         /// <summary>
@@ -17,6 +23,9 @@ public class TransactionListOptions : ListOptionsWithCreated
         /// One of: <c>created</c>, or <c>posted_at</c>.
         /// </summary>
         [JsonProperty("order_by")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("order_by")]
+#endif
         public string OrderBy { get; set; }
 
         /// <summary>
@@ -25,6 +34,9 @@ public class TransactionListOptions : ListOptionsWithCreated
         /// One of: <c>open</c>, <c>posted</c>, or <c>void</c>.
         /// </summary>
         [JsonProperty("status")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status")]
+#endif
         public string Status { get; set; }
 
         /// <summary>
@@ -32,6 +44,9 @@ public class TransactionListOptions : ListOptionsWithCreated
         /// <c>status=posted</c> and <c>order_by=posted_at</c> must also be specified.
         /// </summary>
         [JsonProperty("status_transitions")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("status_transitions")]
+#endif
         public TransactionStatusTransitionsOptions StatusTransitions { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/Treasury/Transactions/TransactionService.cs b/src/Stripe.net/Services/Treasury/Transactions/TransactionService.cs
index d8cf081c30..2c660d6a39 100644
--- a/src/Stripe.net/Services/Treasury/Transactions/TransactionService.cs
+++ b/src/Stripe.net/Services/Treasury/Transactions/TransactionService.cs
@@ -8,7 +8,7 @@ namespace Stripe.Treasury
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class TransactionService : Service<Transaction>,
+    public class TransactionService : Service,
         IListable<Transaction, TransactionListOptions>,
         IRetrievable<Transaction, TransactionGetOptions>
     {
diff --git a/src/Stripe.net/Services/Treasury/Transactions/TransactionStatusTransitionsOptions.cs b/src/Stripe.net/Services/Treasury/Transactions/TransactionStatusTransitionsOptions.cs
index 31ef21600f..3b9f49ae00 100644
--- a/src/Stripe.net/Services/Treasury/Transactions/TransactionStatusTransitionsOptions.cs
+++ b/src/Stripe.net/Services/Treasury/Transactions/TransactionStatusTransitionsOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe.Treasury
     using System;
     using Newtonsoft.Json;
     using Stripe.Infrastructure;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class TransactionStatusTransitionsOptions : INestedOptions
     {
@@ -12,6 +15,10 @@ public class TransactionStatusTransitionsOptions : INestedOptions
         /// </summary>
         [JsonProperty("posted_at")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("posted_at")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, DateRangeOptions> PostedAt { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/V2/Billing/MeterEventAdjustments/MeterEventAdjustmentCreateCancelOptions.cs b/src/Stripe.net/Services/V2/Billing/MeterEventAdjustments/MeterEventAdjustmentCreateCancelOptions.cs
index 087a4b1a9a..24e07a7a2d 100644
--- a/src/Stripe.net/Services/V2/Billing/MeterEventAdjustments/MeterEventAdjustmentCreateCancelOptions.cs
+++ b/src/Stripe.net/Services/V2/Billing/MeterEventAdjustments/MeterEventAdjustmentCreateCancelOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.V2.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MeterEventAdjustmentCreateCancelOptions : INestedOptions
     {
@@ -10,6 +13,9 @@ public class MeterEventAdjustmentCreateCancelOptions : INestedOptions
         /// receiving them.
         /// </summary>
         [JsonProperty("identifier")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("identifier")]
+#endif
         public string Identifier { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/V2/Billing/MeterEventAdjustments/MeterEventAdjustmentCreateOptions.cs b/src/Stripe.net/Services/V2/Billing/MeterEventAdjustments/MeterEventAdjustmentCreateOptions.cs
index 586b25ef0a..d2a5ed62de 100644
--- a/src/Stripe.net/Services/V2/Billing/MeterEventAdjustments/MeterEventAdjustmentCreateOptions.cs
+++ b/src/Stripe.net/Services/V2/Billing/MeterEventAdjustments/MeterEventAdjustmentCreateOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.V2.Billing
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MeterEventAdjustmentCreateOptions : BaseOptions
     {
@@ -9,12 +12,18 @@ public class MeterEventAdjustmentCreateOptions : BaseOptions
         /// Specifies which event to cancel.
         /// </summary>
         [JsonProperty("cancel")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("cancel")]
+#endif
         public MeterEventAdjustmentCreateCancelOptions Cancel { get; set; }
 
         /// <summary>
         /// The name of the meter event. Corresponds with the <c>event_name</c> field on a meter.
         /// </summary>
         [JsonProperty("event_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("event_name")]
+#endif
         public string EventName { get; set; }
 
         /// <summary>
@@ -22,6 +31,9 @@ public class MeterEventAdjustmentCreateOptions : BaseOptions
         /// period cancellation is not supported yet.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/V2/Billing/MeterEventStreams/MeterEventStreamCreateEventOptions.cs b/src/Stripe.net/Services/V2/Billing/MeterEventStreams/MeterEventStreamCreateEventOptions.cs
index feb4c2f2a3..582ab7b34b 100644
--- a/src/Stripe.net/Services/V2/Billing/MeterEventStreams/MeterEventStreamCreateEventOptions.cs
+++ b/src/Stripe.net/Services/V2/Billing/MeterEventStreams/MeterEventStreamCreateEventOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe.V2.Billing
     using System;
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MeterEventStreamCreateEventOptions : INestedOptions
     {
@@ -11,6 +14,9 @@ public class MeterEventStreamCreateEventOptions : INestedOptions
         /// The name of the meter event. Corresponds with the <c>event_name</c> field on a meter.
         /// </summary>
         [JsonProperty("event_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("event_name")]
+#endif
         public string EventName { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class MeterEventStreamCreateEventOptions : INestedOptions
         /// 24 hour period.
         /// </summary>
         [JsonProperty("identifier")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("identifier")]
+#endif
         public string Identifier { get; set; }
 
         /// <summary>
@@ -29,6 +38,9 @@ public class MeterEventStreamCreateEventOptions : INestedOptions
         /// href="https://docs.stripe.com/billing/subscriptions/usage-based/recording-usage#payload-key-overrides">payload</a>.
         /// </summary>
         [JsonProperty("payload")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payload")]
+#endif
         public Dictionary<string, string> Payload { get; set; }
 
         /// <summary>
@@ -36,6 +48,9 @@ public class MeterEventStreamCreateEventOptions : INestedOptions
         /// the future. Defaults to current timestamp if not specified.
         /// </summary>
         [JsonProperty("timestamp")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("timestamp")]
+#endif
         public DateTime? Timestamp { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/V2/Billing/MeterEventStreams/MeterEventStreamCreateOptions.cs b/src/Stripe.net/Services/V2/Billing/MeterEventStreams/MeterEventStreamCreateOptions.cs
index 8d9c3fc445..e928d13fbd 100644
--- a/src/Stripe.net/Services/V2/Billing/MeterEventStreams/MeterEventStreamCreateOptions.cs
+++ b/src/Stripe.net/Services/V2/Billing/MeterEventStreams/MeterEventStreamCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.V2.Billing
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MeterEventStreamCreateOptions : BaseOptions
     {
@@ -10,6 +13,9 @@ public class MeterEventStreamCreateOptions : BaseOptions
         /// List of meter events to include in the request.
         /// </summary>
         [JsonProperty("events")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("events")]
+#endif
         public List<MeterEventStreamCreateEventOptions> Events { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/V2/Billing/MeterEvents/MeterEventCreateOptions.cs b/src/Stripe.net/Services/V2/Billing/MeterEvents/MeterEventCreateOptions.cs
index 379326bc75..8d0d267b0d 100644
--- a/src/Stripe.net/Services/V2/Billing/MeterEvents/MeterEventCreateOptions.cs
+++ b/src/Stripe.net/Services/V2/Billing/MeterEvents/MeterEventCreateOptions.cs
@@ -4,6 +4,9 @@ namespace Stripe.V2.Billing
     using System;
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class MeterEventCreateOptions : BaseOptions
     {
@@ -11,6 +14,9 @@ public class MeterEventCreateOptions : BaseOptions
         /// The name of the meter event. Corresponds with the <c>event_name</c> field on a meter.
         /// </summary>
         [JsonProperty("event_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("event_name")]
+#endif
         public string EventName { get; set; }
 
         /// <summary>
@@ -19,6 +25,9 @@ public class MeterEventCreateOptions : BaseOptions
         /// 24 hour period.
         /// </summary>
         [JsonProperty("identifier")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("identifier")]
+#endif
         public string Identifier { get; set; }
 
         /// <summary>
@@ -29,6 +38,9 @@ public class MeterEventCreateOptions : BaseOptions
         /// href="https://docs.stripe.com/billing/subscriptions/usage-based/recording-usage#payload-key-overrides">payload</a>.
         /// </summary>
         [JsonProperty("payload")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("payload")]
+#endif
         public Dictionary<string, string> Payload { get; set; }
 
         /// <summary>
@@ -36,6 +48,9 @@ public class MeterEventCreateOptions : BaseOptions
         /// the future. Defaults to current timestamp if not specified.
         /// </summary>
         [JsonProperty("timestamp")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("timestamp")]
+#endif
         public DateTime? Timestamp { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/V2/Core/EventDestinations/EventDestinationCreateAmazonEventbridgeOptions.cs b/src/Stripe.net/Services/V2/Core/EventDestinations/EventDestinationCreateAmazonEventbridgeOptions.cs
index 6a1d4ac305..55fd764c58 100644
--- a/src/Stripe.net/Services/V2/Core/EventDestinations/EventDestinationCreateAmazonEventbridgeOptions.cs
+++ b/src/Stripe.net/Services/V2/Core/EventDestinations/EventDestinationCreateAmazonEventbridgeOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.V2.Core
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class EventDestinationCreateAmazonEventbridgeOptions : INestedOptions
     {
@@ -9,12 +12,18 @@ public class EventDestinationCreateAmazonEventbridgeOptions : INestedOptions
         /// The AWS account ID.
         /// </summary>
         [JsonProperty("aws_account_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("aws_account_id")]
+#endif
         public string AwsAccountId { get; set; }
 
         /// <summary>
         /// The region of the AWS event source.
         /// </summary>
         [JsonProperty("aws_region")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("aws_region")]
+#endif
         public string AwsRegion { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/V2/Core/EventDestinations/EventDestinationCreateOptions.cs b/src/Stripe.net/Services/V2/Core/EventDestinations/EventDestinationCreateOptions.cs
index 1141588a87..ddf1467b0e 100644
--- a/src/Stripe.net/Services/V2/Core/EventDestinations/EventDestinationCreateOptions.cs
+++ b/src/Stripe.net/Services/V2/Core/EventDestinations/EventDestinationCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.V2.Core
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class EventDestinationCreateOptions : BaseOptions, IHasMetadata
     {
@@ -10,18 +13,27 @@ public class EventDestinationCreateOptions : BaseOptions, IHasMetadata
         /// Amazon EventBridge configuration.
         /// </summary>
         [JsonProperty("amazon_eventbridge")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("amazon_eventbridge")]
+#endif
         public EventDestinationCreateAmazonEventbridgeOptions AmazonEventbridge { get; set; }
 
         /// <summary>
         /// An optional description of what the event destination is used for.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// The list of events to enable for this endpoint.
         /// </summary>
         [JsonProperty("enabled_events")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled_events")]
+#endif
         public List<string> EnabledEvents { get; set; }
 
         /// <summary>
@@ -29,6 +41,9 @@ public class EventDestinationCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>snapshot</c>, or <c>thin</c>.
         /// </summary>
         [JsonProperty("event_payload")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("event_payload")]
+#endif
         public string EventPayload { get; set; }
 
         /// <summary>
@@ -36,6 +51,9 @@ public class EventDestinationCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>other_accounts</c>, or <c>self</c>.
         /// </summary>
         [JsonProperty("events_from")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("events_from")]
+#endif
         public List<string> EventsFrom { get; set; }
 
         /// <summary>
@@ -43,24 +61,36 @@ public class EventDestinationCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>webhook_endpoint.signing_secret</c>, or <c>webhook_endpoint.url</c>.
         /// </summary>
         [JsonProperty("include")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("include")]
+#endif
         public List<string> Include { get; set; }
 
         /// <summary>
         /// Metadata.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Event destination name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// If using the snapshot event payload, the API version events are rendered as.
         /// </summary>
         [JsonProperty("snapshot_api_version")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("snapshot_api_version")]
+#endif
         public string SnapshotApiVersion { get; set; }
 
         /// <summary>
@@ -68,12 +98,18 @@ public class EventDestinationCreateOptions : BaseOptions, IHasMetadata
         /// One of: <c>amazon_eventbridge</c>, or <c>webhook_endpoint</c>.
         /// </summary>
         [JsonProperty("type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("type")]
+#endif
         public string Type { get; set; }
 
         /// <summary>
         /// Webhook endpoint configuration.
         /// </summary>
         [JsonProperty("webhook_endpoint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("webhook_endpoint")]
+#endif
         public EventDestinationCreateWebhookEndpointOptions WebhookEndpoint { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/V2/Core/EventDestinations/EventDestinationCreateWebhookEndpointOptions.cs b/src/Stripe.net/Services/V2/Core/EventDestinations/EventDestinationCreateWebhookEndpointOptions.cs
index b26fdb706e..86ba3b92c3 100644
--- a/src/Stripe.net/Services/V2/Core/EventDestinations/EventDestinationCreateWebhookEndpointOptions.cs
+++ b/src/Stripe.net/Services/V2/Core/EventDestinations/EventDestinationCreateWebhookEndpointOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.V2.Core
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class EventDestinationCreateWebhookEndpointOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class EventDestinationCreateWebhookEndpointOptions : INestedOptions
         /// The URL of the webhook endpoint.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/V2/Core/EventDestinations/EventDestinationGetOptions.cs b/src/Stripe.net/Services/V2/Core/EventDestinations/EventDestinationGetOptions.cs
index d5115972b1..c4c5c6661f 100644
--- a/src/Stripe.net/Services/V2/Core/EventDestinations/EventDestinationGetOptions.cs
+++ b/src/Stripe.net/Services/V2/Core/EventDestinations/EventDestinationGetOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.V2.Core
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class EventDestinationGetOptions : BaseOptions
     {
@@ -10,6 +13,9 @@ public class EventDestinationGetOptions : BaseOptions
         /// Additional fields to include in the response.
         /// </summary>
         [JsonProperty("include")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("include")]
+#endif
         public List<string> Include { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/V2/Core/EventDestinations/EventDestinationListOptions.cs b/src/Stripe.net/Services/V2/Core/EventDestinations/EventDestinationListOptions.cs
index 0eefd1d6fc..786c1b6689 100644
--- a/src/Stripe.net/Services/V2/Core/EventDestinations/EventDestinationListOptions.cs
+++ b/src/Stripe.net/Services/V2/Core/EventDestinations/EventDestinationListOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.V2.Core
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class EventDestinationListOptions : V2.ListOptions
     {
@@ -11,12 +14,9 @@ public class EventDestinationListOptions : V2.ListOptions
         /// <c>webhook_endpoint.url</c>.
         /// </summary>
         [JsonProperty("include")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("include")]
+#endif
         public List<string> Include { get; set; }
-
-        /// <summary>
-        /// The requested page.
-        /// </summary>
-        [JsonProperty("page")]
-        public string Page { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/V2/Core/EventDestinations/EventDestinationUpdateOptions.cs b/src/Stripe.net/Services/V2/Core/EventDestinations/EventDestinationUpdateOptions.cs
index 68db86eeda..7ffee5090b 100644
--- a/src/Stripe.net/Services/V2/Core/EventDestinations/EventDestinationUpdateOptions.cs
+++ b/src/Stripe.net/Services/V2/Core/EventDestinations/EventDestinationUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.V2.Core
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class EventDestinationUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -10,12 +13,18 @@ public class EventDestinationUpdateOptions : BaseOptions, IHasMetadata
         /// An optional description of what the event destination is used for.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// The list of events to enable for this endpoint.
         /// </summary>
         [JsonProperty("enabled_events")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled_events")]
+#endif
         public List<string> EnabledEvents { get; set; }
 
         /// <summary>
@@ -23,24 +32,36 @@ public class EventDestinationUpdateOptions : BaseOptions, IHasMetadata
         /// <c>webhook_endpoint.url</c>.
         /// </summary>
         [JsonProperty("include")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("include")]
+#endif
         public List<string> Include { get; set; }
 
         /// <summary>
         /// Metadata.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// Event destination name.
         /// </summary>
         [JsonProperty("name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("name")]
+#endif
         public string Name { get; set; }
 
         /// <summary>
         /// Webhook endpoint configuration.
         /// </summary>
         [JsonProperty("webhook_endpoint")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("webhook_endpoint")]
+#endif
         public EventDestinationUpdateWebhookEndpointOptions WebhookEndpoint { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/V2/Core/EventDestinations/EventDestinationUpdateWebhookEndpointOptions.cs b/src/Stripe.net/Services/V2/Core/EventDestinations/EventDestinationUpdateWebhookEndpointOptions.cs
index afd04669e1..6530ac6c80 100644
--- a/src/Stripe.net/Services/V2/Core/EventDestinations/EventDestinationUpdateWebhookEndpointOptions.cs
+++ b/src/Stripe.net/Services/V2/Core/EventDestinations/EventDestinationUpdateWebhookEndpointOptions.cs
@@ -2,6 +2,9 @@
 namespace Stripe.V2.Core
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class EventDestinationUpdateWebhookEndpointOptions : INestedOptions
     {
@@ -9,6 +12,9 @@ public class EventDestinationUpdateWebhookEndpointOptions : INestedOptions
         /// The URL of the webhook endpoint.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/V2/Core/Events/EventListOptions.cs b/src/Stripe.net/Services/V2/Core/Events/EventListOptions.cs
index 6ab511a60b..dd0ab44300 100644
--- a/src/Stripe.net/Services/V2/Core/Events/EventListOptions.cs
+++ b/src/Stripe.net/Services/V2/Core/Events/EventListOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe.V2.Core
 {
     using System;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class EventListOptions : V2.ListOptions
     {
@@ -10,24 +13,36 @@ public class EventListOptions : V2.ListOptions
         /// Filter for events created after the specified timestamp.
         /// </summary>
         [JsonProperty("created_gt")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created_gt")]
+#endif
         public DateTime? CreatedGt { get; set; }
 
         /// <summary>
         /// Filter for events created at or after the specified timestamp.
         /// </summary>
         [JsonProperty("created_gte")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created_gte")]
+#endif
         public DateTime? CreatedGte { get; set; }
 
         /// <summary>
         /// Filter for events created before the specified timestamp.
         /// </summary>
         [JsonProperty("created_lt")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created_lt")]
+#endif
         public DateTime? CreatedLt { get; set; }
 
         /// <summary>
         /// Filter for events created at or before the specified timestamp.
         /// </summary>
         [JsonProperty("created_lte")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created_lte")]
+#endif
         public DateTime? CreatedLte { get; set; }
 
         /// <summary>
@@ -36,18 +51,18 @@ public class EventListOptions : V2.ListOptions
         /// attempts to a event destination will be returned.
         /// </summary>
         [JsonProperty("delivery_success")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("delivery_success")]
+#endif
         public bool? DeliverySuccess { get; set; }
 
         /// <summary>
         /// Primary object ID used to retrieve related events.
         /// </summary>
         [JsonProperty("object_id")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("object_id")]
+#endif
         public string ObjectId { get; set; }
-
-        /// <summary>
-        /// The requested page.
-        /// </summary>
-        [JsonProperty("page")]
-        public string Page { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/WebhookEndpoints/WebhookEndpointCreateOptions.cs b/src/Stripe.net/Services/WebhookEndpoints/WebhookEndpointCreateOptions.cs
index b2902dc5e7..d1784cee97 100644
--- a/src/Stripe.net/Services/WebhookEndpoints/WebhookEndpointCreateOptions.cs
+++ b/src/Stripe.net/Services/WebhookEndpoints/WebhookEndpointCreateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class WebhookEndpointCreateOptions : BaseOptions, IHasMetadata
     {
@@ -39,6 +42,9 @@ public class WebhookEndpointCreateOptions : BaseOptions, IHasMetadata
         /// <c>2025-01-27.acacia</c>, or <c>2025-02-24.acacia</c>.
         /// </summary>
         [JsonProperty("api_version")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("api_version")]
+#endif
         public string ApiVersion { get; set; }
 
         /// <summary>
@@ -46,12 +52,18 @@ public class WebhookEndpointCreateOptions : BaseOptions, IHasMetadata
         /// from your account (<c>false</c>). Defaults to <c>false</c>.
         /// </summary>
         [JsonProperty("connect")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("connect")]
+#endif
         public bool? Connect { get; set; }
 
         /// <summary>
         /// An optional description of what the webhook is used for.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
@@ -181,6 +193,9 @@ public class WebhookEndpointCreateOptions : BaseOptions, IHasMetadata
         /// <c>ping</c>.
         /// </summary>
         [JsonProperty("enabled_events")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled_events")]
+#endif
         public List<string> EnabledEvents { get; set; }
 
         /// <summary>
@@ -190,12 +205,18 @@ public class WebhookEndpointCreateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The URL of the webhook endpoint.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/WebhookEndpoints/WebhookEndpointService.cs b/src/Stripe.net/Services/WebhookEndpoints/WebhookEndpointService.cs
index a7c6f08abb..7e0187e476 100644
--- a/src/Stripe.net/Services/WebhookEndpoints/WebhookEndpointService.cs
+++ b/src/Stripe.net/Services/WebhookEndpoints/WebhookEndpointService.cs
@@ -8,7 +8,7 @@ namespace Stripe
     using System.Threading;
     using System.Threading.Tasks;
 
-    public class WebhookEndpointService : Service<WebhookEndpoint>,
+    public class WebhookEndpointService : Service,
         ICreatable<WebhookEndpoint, WebhookEndpointCreateOptions>,
         IDeletable<WebhookEndpoint, WebhookEndpointDeleteOptions>,
         IListable<WebhookEndpoint, WebhookEndpointListOptions>,
diff --git a/src/Stripe.net/Services/WebhookEndpoints/WebhookEndpointUpdateOptions.cs b/src/Stripe.net/Services/WebhookEndpoints/WebhookEndpointUpdateOptions.cs
index c274f7ddfd..7912c7c8bf 100644
--- a/src/Stripe.net/Services/WebhookEndpoints/WebhookEndpointUpdateOptions.cs
+++ b/src/Stripe.net/Services/WebhookEndpoints/WebhookEndpointUpdateOptions.cs
@@ -3,6 +3,9 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class WebhookEndpointUpdateOptions : BaseOptions, IHasMetadata
     {
@@ -10,12 +13,18 @@ public class WebhookEndpointUpdateOptions : BaseOptions, IHasMetadata
         /// An optional description of what the webhook is used for.
         /// </summary>
         [JsonProperty("description")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("description")]
+#endif
         public string Description { get; set; }
 
         /// <summary>
         /// Disable the webhook endpoint if set to true.
         /// </summary>
         [JsonProperty("disabled")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("disabled")]
+#endif
         public bool? Disabled { get; set; }
 
         /// <summary>
@@ -145,6 +154,9 @@ public class WebhookEndpointUpdateOptions : BaseOptions, IHasMetadata
         /// <c>ping</c>.
         /// </summary>
         [JsonProperty("enabled_events")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("enabled_events")]
+#endif
         public List<string> EnabledEvents { get; set; }
 
         /// <summary>
@@ -154,12 +166,18 @@ public class WebhookEndpointUpdateOptions : BaseOptions, IHasMetadata
         /// them. All keys can be unset by posting an empty value to <c>metadata</c>.
         /// </summary>
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         /// <summary>
         /// The URL of the webhook endpoint.
         /// </summary>
         [JsonProperty("url")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("url")]
+#endif
         public string Url { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/_base/BaseOptions.cs b/src/Stripe.net/Services/_base/BaseOptions.cs
index 64a97d15f4..6569f983a1 100644
--- a/src/Stripe.net/Services/_base/BaseOptions.cs
+++ b/src/Stripe.net/Services/_base/BaseOptions.cs
@@ -3,6 +3,10 @@ namespace Stripe
     using System.Collections.Generic;
     using Newtonsoft.Json;
 
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
+
     /// <summary>
     /// Base class for Stripe options classes, i.e. classes representing parameters for Stripe
     /// API requests.
@@ -12,10 +16,18 @@ public class BaseOptions : INestedOptions
     {
         /// <summary>Specifies which fields in the response should be expanded.</summary>
         [JsonProperty("expand", NullValueHandling = NullValueHandling.Ignore)]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("expand")]
+
+        [STJS.JsonIgnore(Condition = STJS.JsonIgnoreCondition.WhenWritingNull)]
+#endif
         public List<string> Expand { get; set; }
 
         /// <summary>Dictionary containing extra request parameters.</summary>
         [JsonExtensionData]
+#if NET6_0_OR_GREATER
+        [STJS.JsonExtensionData]
+#endif
         public IDictionary<string, object> ExtraParams { get; set; }
             = new Dictionary<string, object>();
 
diff --git a/src/Stripe.net/Services/_base/ListOptions.cs b/src/Stripe.net/Services/_base/ListOptions.cs
index d6ae56a8f6..42e8c165e0 100644
--- a/src/Stripe.net/Services/_base/ListOptions.cs
+++ b/src/Stripe.net/Services/_base/ListOptions.cs
@@ -2,12 +2,19 @@ namespace Stripe
 {
     using Newtonsoft.Json;
 
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
+
     public class ListOptions : BaseOptions
     {
         /// <summary>
         /// A limit on the number of objects to be returned, between 1 and 100.
         /// </summary>
         [JsonProperty("limit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("limit")]
+#endif
         public long? Limit { get; set; }
 
         /// <summary>
@@ -17,6 +24,9 @@ public class ListOptions : BaseOptions
         /// <c>starting_after=obj_foo</c> in order to fetch the next page of the list.
         /// </summary>
         [JsonProperty("starting_after")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("starting_after")]
+#endif
         public string StartingAfter { get; set; }
 
         /// <summary>
@@ -26,6 +36,9 @@ public class ListOptions : BaseOptions
         /// <c>ending_before=obj_bar</c> in order to fetch the previous page of the list.
         /// </summary>
         [JsonProperty("ending_before")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("ending_before")]
+#endif
         public string EndingBefore { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/_base/ListOptionsWithCreated.cs b/src/Stripe.net/Services/_base/ListOptionsWithCreated.cs
index 0604c01dde..fb40e97e26 100644
--- a/src/Stripe.net/Services/_base/ListOptionsWithCreated.cs
+++ b/src/Stripe.net/Services/_base/ListOptionsWithCreated.cs
@@ -2,6 +2,10 @@ namespace Stripe
 {
     using System;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
+
     using Stripe.Infrastructure;
 
     public class ListOptionsWithCreated : ListOptions
@@ -12,6 +16,10 @@ public class ListOptionsWithCreated : ListOptions
         /// </summary>
         [JsonProperty("created")]
         [JsonConverter(typeof(AnyOfConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("created")]
+        [STJS.JsonConverter(typeof(STJAnyOfConverter))]
+#endif
         public AnyOf<DateTime?, DateRangeOptions> Created { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/_base/SearchOptions.cs b/src/Stripe.net/Services/_base/SearchOptions.cs
index 1d13d9109d..a2c815fe7b 100644
--- a/src/Stripe.net/Services/_base/SearchOptions.cs
+++ b/src/Stripe.net/Services/_base/SearchOptions.cs
@@ -1,6 +1,9 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class SearchOptions : BaseOptions
     {
@@ -8,12 +11,21 @@ public class SearchOptions : BaseOptions
         /// A limit on the number of objects to be returned, between 1 and 100.
         /// </summary>
         [JsonProperty("limit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("limit")]
+#endif
         public long? Limit { get; set; }
 
         [JsonProperty("page")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("page")]
+#endif
         public string Page { get; set; }
 
         [JsonProperty("query")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("query")]
+#endif
         public string Query { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/_base/V2/ListOptions.cs b/src/Stripe.net/Services/_base/V2/ListOptions.cs
index 0f2166d3e1..f63843a2e1 100644
--- a/src/Stripe.net/Services/_base/V2/ListOptions.cs
+++ b/src/Stripe.net/Services/_base/V2/ListOptions.cs
@@ -1,6 +1,9 @@
 namespace Stripe.V2
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class ListOptions : BaseOptions
     {
@@ -8,6 +11,9 @@ public class ListOptions : BaseOptions
         /// A limit on the number of objects to be returned, between 1 and 100.
         /// </summary>
         [JsonProperty("limit")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("limit")]
+#endif
         public long? Limit { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/_common/AddressJapanOptions.cs b/src/Stripe.net/Services/_common/AddressJapanOptions.cs
index bfc277cefe..d80f71dbbf 100644
--- a/src/Stripe.net/Services/_common/AddressJapanOptions.cs
+++ b/src/Stripe.net/Services/_common/AddressJapanOptions.cs
@@ -1,10 +1,16 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AddressJapanOptions : AddressOptions
     {
         [JsonProperty("town")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("town")]
+#endif
         public string Town { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/_common/AddressOptions.cs b/src/Stripe.net/Services/_common/AddressOptions.cs
index 25268bc734..da0693a3b9 100644
--- a/src/Stripe.net/Services/_common/AddressOptions.cs
+++ b/src/Stripe.net/Services/_common/AddressOptions.cs
@@ -1,25 +1,46 @@
 namespace Stripe
 {
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     public class AddressOptions : INestedOptions
     {
         [JsonProperty("city")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("city")]
+#endif
         public string City { get; set; }
 
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         [JsonProperty("line1")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line1")]
+#endif
         public string Line1 { get; set; }
 
         [JsonProperty("line2")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("line2")]
+#endif
         public string Line2 { get; set; }
 
         [JsonProperty("postal_code")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("postal_code")]
+#endif
         public string PostalCode { get; set; }
 
         [JsonProperty("state")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("state")]
+#endif
         public string State { get; set; }
     }
 }
diff --git a/src/Stripe.net/Services/_common/DateRangeOptions.cs b/src/Stripe.net/Services/_common/DateRangeOptions.cs
index 918cabd425..ad38065039 100644
--- a/src/Stripe.net/Services/_common/DateRangeOptions.cs
+++ b/src/Stripe.net/Services/_common/DateRangeOptions.cs
@@ -2,27 +2,47 @@ namespace Stripe
 {
     using System;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
+
     using Stripe.Infrastructure;
 
     public class DateRangeOptions : INestedOptions
     {
         [JsonProperty("gt")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gt")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         [AllowNameMismatch]
         public DateTime? GreaterThan { get; set; }
 
         [JsonProperty("gte")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("gte")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         [AllowNameMismatch]
         public DateTime? GreaterThanOrEqual { get; set; }
 
         [JsonProperty("lt")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lt")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         [AllowNameMismatch]
         public DateTime? LessThan { get; set; }
 
         [JsonProperty("lte")]
         [JsonConverter(typeof(UnixDateTimeConverter))]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("lte")]
+        [STJS.JsonConverter(typeof(STJUnixDateTimeConverter))]
+#endif
         [AllowNameMismatch]
         public DateTime? LessThanOrEqual { get; set; }
     }
diff --git a/src/Stripe.net/Services/_refactor/SourceBankAccount.cs b/src/Stripe.net/Services/_refactor/SourceBankAccount.cs
index 973e0a8d35..7b72157cd4 100644
--- a/src/Stripe.net/Services/_refactor/SourceBankAccount.cs
+++ b/src/Stripe.net/Services/_refactor/SourceBankAccount.cs
@@ -2,34 +2,69 @@ namespace Stripe
 {
     using System.Collections.Generic;
     using Newtonsoft.Json;
+#if NET6_0_OR_GREATER
+    using Stripe.Infrastructure;
+    using STJS = System.Text.Json.Serialization;
+#endif
 
+#if NET6_0_OR_GREATER
+    [STJS.JsonConverter(typeof(STJMemberSerializationOptIn))]
+#endif
     public class SourceBankAccount : INestedOptions, IHasMetadata
     {
         [JsonProperty("object")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonInclude]
+        [STJS.JsonPropertyName("object")]
+#endif
         internal string Object => "bank_account";
 
         [JsonProperty("account_holder_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_name")]
+#endif
         public string AccountHolderName { get; set; }
 
         [JsonProperty("account_holder_type")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_holder_type")]
+#endif
         public string AccountHolderType { get; set; }
 
         [JsonProperty("account_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("account_number")]
+#endif
         public string AccountNumber { get; set; }
 
         [JsonProperty("bank_name")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("bank_name")]
+#endif
         public string BankName { get; set; }
 
         [JsonProperty("country")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("country")]
+#endif
         public string Country { get; set; }
 
         [JsonProperty("currency")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("currency")]
+#endif
         public string Currency { get; set; }
 
         [JsonProperty("metadata")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("metadata")]
+#endif
         public Dictionary<string, string> Metadata { get; set; }
 
         [JsonProperty("routing_number")]
+#if NET6_0_OR_GREATER
+        [STJS.JsonPropertyName("routing_number")]
+#endif
         public string RoutingNumber { get; set; }
     }
 }
diff --git a/src/StripeTests/Services/GeneratedExamplesTest.cs b/src/StripeTests/Services/GeneratedExamplesTest.cs
index 37349d2df3..eac57469ba 100644
--- a/src/StripeTests/Services/GeneratedExamplesTest.cs
+++ b/src/StripeTests/Services/GeneratedExamplesTest.cs
@@ -756,8 +756,7 @@ public void TestCouponsPost()
             var options = new CouponCreateOptions
             {
                 PercentOff = 25.5M,
-                Duration = "repeating",
-                DurationInMonths = 3,
+                Duration = "once",
             };
             var service = new CouponService(this.StripeClient);
             service.Create(options);
@@ -1702,7 +1701,6 @@ public void TestInvoiceitemsPost()
             var options = new InvoiceItemCreateOptions
             {
                 Customer = "cus_xxxxxxxxxxxxx",
-                Price = "price_xxxxxxxxxxxxx",
             };
             var service = new InvoiceItemService(this.StripeClient);
             service.Create(options);
@@ -3744,41 +3742,6 @@ public void TestSubscriptionItemsPost2()
                 "/v1/subscription_items/si_xxxxxxxxxxxxx");
         }
 
-        [Fact]
-        public void TestSubscriptionItemsUsageRecordSummariesGet()
-        {
-            var options = new SubscriptionItemUsageRecordSummaryListOptions
-            {
-                Limit = 3,
-            };
-            var service = new SubscriptionItemUsageRecordSummaryService(
-                this.StripeClient);
-            StripeList<UsageRecordSummary> usageRecordSummaries = service.List(
-                "si_xxxxxxxxxxxxx",
-                options);
-            this.AssertRequest(
-                HttpMethod.Get,
-                "/v1/subscription_items/si_xxxxxxxxxxxxx/usage_record_summaries",
-                "limit=3");
-        }
-
-        [Fact]
-        public void TestSubscriptionItemsUsageRecordsPost()
-        {
-            var options = new SubscriptionItemUsageRecordCreateOptions
-            {
-                Quantity = 100,
-                Timestamp = DateTimeOffset.FromUnixTimeSeconds(1571252444)
-                    .UtcDateTime,
-            };
-            var service = new SubscriptionItemUsageRecordService(
-                this.StripeClient);
-            service.Create("si_xxxxxxxxxxxxx", options);
-            this.AssertRequest(
-                HttpMethod.Post,
-                "/v1/subscription_items/si_xxxxxxxxxxxxx/usage_records");
-        }
-
         [Fact]
         public void TestSubscriptionSchedulesCancelPost()
         {
@@ -5978,5 +5941,298 @@ public void TestWebhookEndpointsPost2()
                 HttpMethod.Post,
                 "/v1/webhook_endpoints/we_xxxxxxxxxxxxx");
         }
+
+        [Fact]
+        public void TestV2BillingMeterEventSessionPost()
+        {
+            this.StubRequest(
+                HttpMethod.Post,
+                "/v2/billing/meter_event_session",
+                (HttpStatusCode)200,
+                "{\"id\":\"obj_123\",\"object\":\"v2.billing.meter_event_session\",\"authentication_token\":\"authentication_token\",\"created\":\"1970-01-12T21:42:34.472Z\",\"expires_at\":\"1970-01-10T15:36:51.170Z\",\"livemode\":true}");
+            var options = new Stripe.V2.Billing.MeterEventSessionCreateOptions();
+            var client = new StripeClient(this.Requestor);
+            var service = client.V2.Billing.MeterEventSession;
+            service.Create(options);
+            this.AssertRequest(
+                HttpMethod.Post,
+                "/v2/billing/meter_event_session");
+        }
+
+        [Fact]
+        public void TestV2BillingMeterEventAdjustmentPost()
+        {
+            this.StubRequest(
+                HttpMethod.Post,
+                "/v2/billing/meter_event_adjustments",
+                (HttpStatusCode)200,
+                "{\"id\":\"obj_123\",\"object\":\"v2.billing.meter_event_adjustment\",\"cancel\":{\"identifier\":\"identifier\"},\"created\":\"1970-01-12T21:42:34.472Z\",\"event_name\":\"event_name\",\"livemode\":true,\"status\":\"complete\",\"type\":\"cancel\"}");
+            var options = new Stripe.V2.Billing.MeterEventAdjustmentCreateOptions
+            {
+                Cancel = new Stripe.V2.Billing.MeterEventAdjustmentCreateCancelOptions
+                {
+                    Identifier = "identifier",
+                },
+                EventName = "event_name",
+                Type = "cancel",
+            };
+            var client = new StripeClient(this.Requestor);
+            var service = client.V2.Billing.MeterEventAdjustments;
+            service.Create(options);
+            this.AssertRequest(
+                HttpMethod.Post,
+                "/v2/billing/meter_event_adjustments");
+        }
+
+        [Fact]
+        public void TestV2BillingMeterEventStreamPost()
+        {
+            this.StubRequest(
+                HttpMethod.Post,
+                "/v2/billing/meter_event_stream",
+                (HttpStatusCode)200,
+                "{}");
+            var options = new Stripe.V2.Billing.MeterEventStreamCreateOptions
+            {
+                Events = new List<Stripe.V2.Billing.MeterEventStreamCreateEventOptions>
+                {
+                    new Stripe.V2.Billing.MeterEventStreamCreateEventOptions
+                    {
+                        EventName = "event_name",
+                        Identifier = "identifier",
+                        Payload = new Dictionary<string, string>
+                        {
+                            { "undefined", "payload" },
+                        },
+                        Timestamp = DateTimeOffset.Parse(
+                            "1970-01-01T15:18:46.294Z")
+                            .UtcDateTime,
+                    },
+                },
+            };
+            var client = new StripeClient(this.Requestor);
+            var service = client.V2.Billing.MeterEventStream;
+            service.Create(options);
+            this.AssertRequest(
+                HttpMethod.Post,
+                "/v2/billing/meter_event_stream");
+        }
+
+        [Fact]
+        public void TestV2BillingMeterEventPost()
+        {
+            this.StubRequest(
+                HttpMethod.Post,
+                "/v2/billing/meter_events",
+                (HttpStatusCode)200,
+                "{\"object\":\"v2.billing.meter_event\",\"created\":\"1970-01-12T21:42:34.472Z\",\"event_name\":\"event_name\",\"identifier\":\"identifier\",\"livemode\":true,\"payload\":{\"undefined\":\"payload\"},\"timestamp\":\"1970-01-01T15:18:46.294Z\"}");
+            var options = new Stripe.V2.Billing.MeterEventCreateOptions
+            {
+                EventName = "event_name",
+                Payload = new Dictionary<string, string>
+                {
+                    { "undefined", "payload" },
+                },
+            };
+            var client = new StripeClient(this.Requestor);
+            var service = client.V2.Billing.MeterEvents;
+            service.Create(options);
+            this.AssertRequest(HttpMethod.Post, "/v2/billing/meter_events");
+        }
+
+        [Fact]
+        public void TestV2CoreEventDestinationPost()
+        {
+            this.StubRequest(
+                HttpMethod.Post,
+                "/v2/core/event_destinations",
+                (HttpStatusCode)200,
+                "{\"id\":\"obj_123\",\"object\":\"v2.core.event_destination\",\"amazon_eventbridge\":null,\"created\":\"1970-01-12T21:42:34.472Z\",\"description\":\"description\",\"enabled_events\":[\"enabled_events\"],\"event_payload\":\"thin\",\"events_from\":null,\"livemode\":true,\"metadata\":null,\"name\":\"name\",\"snapshot_api_version\":null,\"status\":\"disabled\",\"status_details\":null,\"type\":\"amazon_eventbridge\",\"updated\":\"1970-01-03T17:07:10.277Z\",\"webhook_endpoint\":null}");
+            var options = new Stripe.V2.Core.EventDestinationCreateOptions
+            {
+                EnabledEvents = new List<string> { "enabled_events" },
+                EventPayload = "thin",
+                Name = "name",
+                Type = "amazon_eventbridge",
+            };
+            var client = new StripeClient(this.Requestor);
+            var service = client.V2.Core.EventDestinations;
+            service.Create(options);
+            this.AssertRequest(HttpMethod.Post, "/v2/core/event_destinations");
+        }
+
+        [Fact]
+        public void TestV2CoreEventDestinationDelete()
+        {
+            this.StubRequest(
+                HttpMethod.Delete,
+                "/v2/core/event_destinations/id_123",
+                (HttpStatusCode)200,
+                "{\"id\":\"obj_123\",\"object\":\"v2.core.event_destination\",\"amazon_eventbridge\":null,\"created\":\"1970-01-12T21:42:34.472Z\",\"description\":\"description\",\"enabled_events\":[\"enabled_events\"],\"event_payload\":\"thin\",\"events_from\":null,\"livemode\":true,\"metadata\":null,\"name\":\"name\",\"snapshot_api_version\":null,\"status\":\"disabled\",\"status_details\":null,\"type\":\"amazon_eventbridge\",\"updated\":\"1970-01-03T17:07:10.277Z\",\"webhook_endpoint\":null}");
+            var client = new StripeClient(this.Requestor);
+            var service = client.V2.Core.EventDestinations;
+            service.Delete("id_123");
+            this.AssertRequest(
+                HttpMethod.Delete,
+                "/v2/core/event_destinations/id_123");
+        }
+
+        [Fact]
+        public void TestV2CoreEventDestinationPost2()
+        {
+            this.StubRequest(
+                HttpMethod.Post,
+                "/v2/core/event_destinations/id_123/disable",
+                (HttpStatusCode)200,
+                "{\"id\":\"obj_123\",\"object\":\"v2.core.event_destination\",\"amazon_eventbridge\":null,\"created\":\"1970-01-12T21:42:34.472Z\",\"description\":\"description\",\"enabled_events\":[\"enabled_events\"],\"event_payload\":\"thin\",\"events_from\":null,\"livemode\":true,\"metadata\":null,\"name\":\"name\",\"snapshot_api_version\":null,\"status\":\"disabled\",\"status_details\":null,\"type\":\"amazon_eventbridge\",\"updated\":\"1970-01-03T17:07:10.277Z\",\"webhook_endpoint\":null}");
+            var client = new StripeClient(this.Requestor);
+            var service = client.V2.Core.EventDestinations;
+            service.Disable("id_123");
+            this.AssertRequest(
+                HttpMethod.Post,
+                "/v2/core/event_destinations/id_123/disable");
+        }
+
+        [Fact]
+        public void TestV2CoreEventDestinationPost3()
+        {
+            this.StubRequest(
+                HttpMethod.Post,
+                "/v2/core/event_destinations/id_123/enable",
+                (HttpStatusCode)200,
+                "{\"id\":\"obj_123\",\"object\":\"v2.core.event_destination\",\"amazon_eventbridge\":null,\"created\":\"1970-01-12T21:42:34.472Z\",\"description\":\"description\",\"enabled_events\":[\"enabled_events\"],\"event_payload\":\"thin\",\"events_from\":null,\"livemode\":true,\"metadata\":null,\"name\":\"name\",\"snapshot_api_version\":null,\"status\":\"disabled\",\"status_details\":null,\"type\":\"amazon_eventbridge\",\"updated\":\"1970-01-03T17:07:10.277Z\",\"webhook_endpoint\":null}");
+            var client = new StripeClient(this.Requestor);
+            var service = client.V2.Core.EventDestinations;
+            service.Enable("id_123");
+            this.AssertRequest(
+                HttpMethod.Post,
+                "/v2/core/event_destinations/id_123/enable");
+        }
+
+        [Fact]
+        public void TestV2CoreEventDestinationGet()
+        {
+            this.StubRequest(
+                HttpMethod.Get,
+                "/v2/core/event_destinations",
+                (HttpStatusCode)200,
+                "{\"data\":[{\"id\":\"obj_123\",\"object\":\"v2.core.event_destination\",\"amazon_eventbridge\":null,\"created\":\"1970-01-12T21:42:34.472Z\",\"description\":\"description\",\"enabled_events\":[\"enabled_events\"],\"event_payload\":\"thin\",\"events_from\":null,\"livemode\":true,\"metadata\":null,\"name\":\"name\",\"snapshot_api_version\":null,\"status\":\"disabled\",\"status_details\":null,\"type\":\"amazon_eventbridge\",\"updated\":\"1970-01-03T17:07:10.277Z\",\"webhook_endpoint\":null}],\"next_page_url\":null,\"previous_page_url\":null}");
+            var client = new StripeClient(this.Requestor);
+            var service = client.V2.Core.EventDestinations;
+            Stripe.V2.StripeList<Stripe.V2.EventDestination> eventDestinations = service
+                .List();
+            this.AssertRequest(HttpMethod.Get, "/v2/core/event_destinations");
+        }
+
+        [Fact]
+        public void TestV2CoreEventDestinationPost4()
+        {
+            this.StubRequest(
+                HttpMethod.Post,
+                "/v2/core/event_destinations/id_123/ping",
+                (HttpStatusCode)200,
+                "{\"id\":\"obj_123\",\"object\":\"v2.core.event\",\"context\":null,\"created\":\"1970-01-12T21:42:34.472Z\",\"livemode\":true,\"reason\":null,\"type\":\"type\"}");
+            var client = new StripeClient(this.Requestor);
+            var service = client.V2.Core.EventDestinations;
+            service.Ping("id_123");
+            this.AssertRequest(
+                HttpMethod.Post,
+                "/v2/core/event_destinations/id_123/ping");
+        }
+
+        [Fact]
+        public void TestV2CoreEventDestinationGet2()
+        {
+            this.StubRequest(
+                HttpMethod.Get,
+                "/v2/core/event_destinations/id_123",
+                (HttpStatusCode)200,
+                "{\"id\":\"obj_123\",\"object\":\"v2.core.event_destination\",\"amazon_eventbridge\":null,\"created\":\"1970-01-12T21:42:34.472Z\",\"description\":\"description\",\"enabled_events\":[\"enabled_events\"],\"event_payload\":\"thin\",\"events_from\":null,\"livemode\":true,\"metadata\":null,\"name\":\"name\",\"snapshot_api_version\":null,\"status\":\"disabled\",\"status_details\":null,\"type\":\"amazon_eventbridge\",\"updated\":\"1970-01-03T17:07:10.277Z\",\"webhook_endpoint\":null}");
+            var client = new StripeClient(this.Requestor);
+            var service = client.V2.Core.EventDestinations;
+            service.Get("id_123");
+            this.AssertRequest(
+                HttpMethod.Get,
+                "/v2/core/event_destinations/id_123");
+        }
+
+        [Fact]
+        public void TestV2CoreEventDestinationPost5()
+        {
+            this.StubRequest(
+                HttpMethod.Post,
+                "/v2/core/event_destinations/id_123",
+                (HttpStatusCode)200,
+                "{\"id\":\"obj_123\",\"object\":\"v2.core.event_destination\",\"amazon_eventbridge\":null,\"created\":\"1970-01-12T21:42:34.472Z\",\"description\":\"description\",\"enabled_events\":[\"enabled_events\"],\"event_payload\":\"thin\",\"events_from\":null,\"livemode\":true,\"metadata\":null,\"name\":\"name\",\"snapshot_api_version\":null,\"status\":\"disabled\",\"status_details\":null,\"type\":\"amazon_eventbridge\",\"updated\":\"1970-01-03T17:07:10.277Z\",\"webhook_endpoint\":null}");
+            var options = new Stripe.V2.Core.EventDestinationUpdateOptions();
+            var client = new StripeClient(this.Requestor);
+            var service = client.V2.Core.EventDestinations;
+            service.Update("id_123", options);
+            this.AssertRequest(
+                HttpMethod.Post,
+                "/v2/core/event_destinations/id_123");
+        }
+
+        [Fact]
+        public void TestV2CoreEventGet()
+        {
+            this.StubRequest(
+                HttpMethod.Get,
+                "/v2/core/events",
+                (HttpStatusCode)200,
+                "{\"data\":[{\"id\":\"obj_123\",\"object\":\"v2.core.event\",\"context\":null,\"created\":\"1970-01-12T21:42:34.472Z\",\"livemode\":true,\"reason\":null,\"type\":\"type\"}],\"next_page_url\":null,\"previous_page_url\":null}");
+            var client = new StripeClient(this.Requestor);
+            var service = client.V2.Core.Events;
+            Stripe.V2.StripeList<Stripe.V2.Event> events = service.List();
+            this.AssertRequest(HttpMethod.Get, "/v2/core/events");
+        }
+
+        [Fact]
+        public void TestV2CoreEventGet2()
+        {
+            this.StubRequest(
+                HttpMethod.Get,
+                "/v2/core/events/id_123",
+                (HttpStatusCode)200,
+                "{\"id\":\"obj_123\",\"object\":\"v2.core.event\",\"context\":null,\"created\":\"1970-01-12T21:42:34.472Z\",\"livemode\":true,\"reason\":null,\"type\":\"type\"}");
+            var client = new StripeClient(this.Requestor);
+            var service = client.V2.Core.Events;
+            service.Get("id_123");
+            this.AssertRequest(HttpMethod.Get, "/v2/core/events/id_123");
+        }
+
+        [Fact]
+        public void TestTemporarySessionExpiredError()
+        {
+            this.StubRequest(
+                HttpMethod.Post,
+                "/v2/billing/meter_event_stream",
+                (HttpStatusCode)400,
+                "{\"error\":{\"type\":\"temporary_session_expired\",\"code\":\"billing_meter_event_session_expired\"}}");
+            var exception = Assert.Throws<Stripe.V2.TemporarySessionExpiredException>(
+            () =>
+            {
+            var options = new Stripe.V2.Billing.MeterEventStreamCreateOptions
+            {
+                Events = new List<Stripe.V2.Billing.MeterEventStreamCreateEventOptions>
+                {
+                    new Stripe.V2.Billing.MeterEventStreamCreateEventOptions
+                    {
+                        EventName = "event_name",
+                        Payload = new Dictionary<string, string>
+                        {
+                            { "undefined", "payload" },
+                        },
+                    },
+                },
+            };
+            var client = new StripeClient(this.Requestor);
+            var service = client.V2.Billing.MeterEventStream;
+            service.Create(options);
+            });
+            this.AssertRequest(
+                HttpMethod.Post,
+                "/v2/billing/meter_event_stream");
+        }
     }
 }
diff --git a/src/StripeTests/Wholesome/AttributeTestUtils.cs b/src/StripeTests/Wholesome/AttributeTestUtils.cs
new file mode 100644
index 0000000000..1258f52300
--- /dev/null
+++ b/src/StripeTests/Wholesome/AttributeTestUtils.cs
@@ -0,0 +1,53 @@
+namespace StripeTests.Wholesome
+{
+    using System;
+    using System.Collections.Generic;
+    using System.Reflection;
+
+    public class AttributeTestUtils
+    {
+        /// <summary>
+        /// Find all attributes used by any type in the specified assembly that has a
+        /// namespace that starts with the supplied prefix.
+        /// </summary>
+        /// <param name="nsPrefix">The namespace or prefix of the namespace to search for.  Case insensitive.</param>
+        /// <param name="assembly">An assembly to search.  If null, this method uses the calling assembly.</param>
+        /// <returns>A list of attribute names currently in use.</returns>
+        public static IEnumerable<Attribute> FindAllUsedAttributesFromNamespace(string nsPrefix, Assembly assembly = null)
+        {
+            var results = new List<Attribute>();
+            assembly = assembly ?? Assembly.GetCallingAssembly();
+            foreach (Type type in assembly.GetTypes())
+            {
+                foreach (var attribute in type.GetCustomAttributes())
+                {
+                    var attributeType = attribute.GetType();
+                    if (attributeType.Namespace.StartsWith(nsPrefix, true, null))
+                    {
+                        if (!results.Contains(attribute))
+                        {
+                            results.Add(attribute);
+                        }
+                    }
+                }
+
+                foreach (var property in type.GetProperties())
+                {
+                    foreach (var attribute in property.GetCustomAttributes())
+                    {
+                        var attributeType = attribute.GetType();
+                        if (attributeType.Namespace.StartsWith(nsPrefix, true, null))
+                        {
+                            if (!results.Contains(attribute))
+                            {
+                                results.Add(attribute);
+                            }
+                        }
+                    }
+                }
+            }
+
+            return results;
+        }
+    }
+}
diff --git a/src/StripeTests/Wholesome/ClassesHaveAllNecessaryJsonAttributes.cs b/src/StripeTests/Wholesome/ClassesHaveAllNecessaryJsonAttributes.cs
new file mode 100644
index 0000000000..6323cee54c
--- /dev/null
+++ b/src/StripeTests/Wholesome/ClassesHaveAllNecessaryJsonAttributes.cs
@@ -0,0 +1,105 @@
+namespace StripeTests.Wholesome
+{
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Reflection;
+    using Stripe;
+    using Xunit;
+
+#if NET6_0_OR_GREATER
+    using Stripe.Infrastructure;
+    using Stripe.Infrastructure.FormEncoding;
+    using STJS = System.Text.Json.Serialization;
+#endif
+
+    /// <summary>
+    /// This wholesome test ensures that if a class has Newtonsoft JSON attributes, it also has
+    /// all other necessary/equivalent attributes (i.e. for System.Text.Json support)
+    /// attributes.
+    /// </summary>
+    public class ClassesHaveAllNecessaryJsonAttributes : WholesomeTest
+    {
+        private const string AssertionMessage =
+            "Found at least one class that is missing necessary attributes.";
+
+        [Fact]
+        public void Check()
+        {
+            List<string> results = new List<string>();
+
+            // Get all classes in the Stripe namespace
+            var assembly = typeof(StripeEntity).Assembly;
+            var types = assembly.DefinedTypes.Where(t => t.FullName.StartsWith("Stripe."));
+            foreach (TypeInfo type in types)
+            {
+                if (type.GetCustomAttribute(typeof(NoSystemTextJsonAttributesNeededAttribute), false) != null)
+                {
+                    continue;
+                }
+
+                var hasCorrectAttributes = true;
+#if NET6_0_OR_GREATER
+                var isIEnumerable = typeof(System.Collections.IEnumerable).GetTypeInfo().IsAssignableFrom(type.GetTypeInfo());
+                var isEntity = typeof(StripeEntity).GetTypeInfo().IsAssignableFrom(type.GetTypeInfo());
+
+                if (isIEnumerable && isEntity)
+                {
+                    var converter = type.GetCustomAttribute(typeof(STJS.JsonConverterAttribute), false) as STJS.JsonConverterAttribute;
+                    if (converter?.ConverterType != typeof(STJEnumerableObjectConverter))
+                    {
+                        hasCorrectAttributes = false;
+                    }
+                }
+
+                // Special case for IHasObject
+                if (type == typeof(IHasObject))
+                {
+                    var converter = type.GetCustomAttribute(typeof(STJS.JsonConverterAttribute), false) as STJS.JsonConverterAttribute;
+                    if (converter?.ConverterType != typeof(STJStripeObjectConverter))
+                    {
+                        hasCorrectAttributes = false;
+                    }
+                }
+
+                // Special case for Stripe.V2.Event
+                if (type == typeof(Stripe.V2.Event))
+                {
+                    var converter = type.GetCustomAttribute(typeof(STJS.JsonConverterAttribute), false) as STJS.JsonConverterAttribute;
+                    if (converter?.ConverterType != typeof(STJV2EventConverter))
+                    {
+                        hasCorrectAttributes = false;
+                    }
+                }
+#endif
+
+                if (hasCorrectAttributes)
+                {
+                    var attributes = type.GetCustomAttributes(false).Cast<Attribute>();
+                    foreach (Attribute attribute in attributes)
+                    {
+                        if (attribute.GetType().Namespace.StartsWith("Newtonsoft", true, null))
+                        {
+#if NET6_0_OR_GREATER
+                            // we assume classes are public if they have json attributes
+                            hasCorrectAttributes = SystemTextJsonTestUtils.HasCorrectAttributes(attribute, attributes, true);
+                            if (!hasCorrectAttributes)
+                            {
+                                break;
+                            }
+#endif
+                        }
+                    }
+                }
+
+                if (!hasCorrectAttributes)
+                {
+                    results.Add($"{type.FullName}");
+                }
+            }
+
+            var message = $"{AssertionMessage}\n{results.Count} affected classes: {string.Join(",", results)}";
+            AssertEmpty(results, message);
+        }
+    }
+}
diff --git a/src/StripeTests/Wholesome/CorrectJsonConvertersForEnumerableItemTypes.cs b/src/StripeTests/Wholesome/CorrectJsonConvertersForEnumerableItemTypes.cs
new file mode 100644
index 0000000000..dba54b0d94
--- /dev/null
+++ b/src/StripeTests/Wholesome/CorrectJsonConvertersForEnumerableItemTypes.cs
@@ -0,0 +1,80 @@
+#if NET6_0_OR_GREATER
+namespace StripeTests.Wholesome
+{
+    using System;
+    using System.Collections;
+    using System.Collections.Generic;
+    using System.Reflection;
+    using System.Text.Json.Serialization;
+    using Stripe;
+    using Xunit;
+
+    /// <summary>
+    /// This wholesome test ensures that types used in enumerables (List, StripeList) that require
+    /// custom converters have the correct converters specified.  This is important because
+    /// System.Text.Json will by default use the declared type, and not the actual concrete type
+    /// of the object, to determine how to Serialize.
+    /// </summary>
+    public class CorrectJsonConvertersForEnumerableItemTypes : WholesomeTest
+    {
+        private const string AssertionMessage =
+            "Found at least one property with a missing or incorrect [JsonConverter] attribute.";
+
+        [Fact]
+        public void Check()
+        {
+            var results = new List<string>();
+
+            // Get all classes that derive from StripeEntity or implement INestedOptions
+            var stripeClasses = GetSubclassesOf(typeof(StripeEntity));
+            stripeClasses.AddRange(GetClassesWithInterface(typeof(INestedOptions)));
+
+            foreach (var stripeClass in stripeClasses)
+            {
+                foreach (var property in GetPropertiesToCheck(stripeClass))
+                {
+                    var propType = property.PropertyType;
+                    if (Nullable.GetUnderlyingType(propType) != null)
+                    {
+                        propType = Nullable.GetUnderlyingType(propType);
+                    }
+
+                    // Skip properties that don't have a `JsonProperty` attribute
+                    var jsonPropertyAttribute = property.GetCustomAttribute<JsonPropertyNameAttribute>();
+                    if (jsonPropertyAttribute == null)
+                    {
+                        continue;
+                    }
+
+                    // Skip any proeprty that isn't an IEnumerable
+                    if (!typeof(IEnumerable).GetTypeInfo().IsAssignableFrom(propType.GetTypeInfo()))
+                    {
+                        continue;
+                    }
+
+                    // Skip any non-generic IEnumerables, since we wont be able to tell what
+                    // type the items are.
+                    if (propType.GenericTypeArguments.Length == 0)
+                    {
+                        continue;
+                    }
+
+                    foreach (var typeArg in propType.GenericTypeArguments)
+                    {
+                        var ret = SystemTextJsonTestUtils.HasCorrectConverterType(typeArg, typeArg);
+                        if (ret != null)
+                        {
+                            results.Add(
+                                $"{typeArg.FullName}, expected = {ret.Item1}, "
+                                    + $"actual = {ret.Item2}");
+                        }
+                    }
+                }
+            }
+
+            var message = $"{AssertionMessage}\n{results.Count} affected classes: {string.Join(",", results)}";
+            AssertEmpty(results, message);
+        }
+    }
+}
+#endif
diff --git a/src/StripeTests/Wholesome/CorrectJsonConvertersForTypes.cs b/src/StripeTests/Wholesome/CorrectJsonConvertersForTypes.cs
index 55a2877c80..3806fd17b7 100644
--- a/src/StripeTests/Wholesome/CorrectJsonConvertersForTypes.cs
+++ b/src/StripeTests/Wholesome/CorrectJsonConvertersForTypes.cs
@@ -1,4 +1,4 @@
-namespace StripeTests
+namespace StripeTests.Wholesome
 {
     using System;
     using System.Collections.Generic;
diff --git a/src/StripeTests/Wholesome/CorrectJsonConvertersForTypesWithNonPublicMembers.cs b/src/StripeTests/Wholesome/CorrectJsonConvertersForTypesWithNonPublicMembers.cs
new file mode 100644
index 0000000000..d2f1f138fd
--- /dev/null
+++ b/src/StripeTests/Wholesome/CorrectJsonConvertersForTypesWithNonPublicMembers.cs
@@ -0,0 +1,63 @@
+#if NET6_0_OR_GREATER
+namespace StripeTests.Wholesome
+{
+    using System.Collections.Generic;
+    using System.Diagnostics;
+    using System.Reflection;
+    using System.Text.Json.Serialization;
+    using Stripe;
+    using Stripe.Infrastructure;
+    using Xunit;
+
+    /// <summary>
+    /// Checks that classes with non-public properties with Json attributes
+    /// have STJMemberSerializationOptIn custom converter.
+    /// </summary>
+    public class CorrectJsonConvertersForTypesWithNonPublicMembers : WholesomeTest
+    {
+        private const string AssertionMessage =
+            "Found at least one property with a missing or incorrect [JsonConverter] attribute.";
+
+        [Fact]
+        public void Check()
+        {
+            var results = new List<string>();
+
+            // Get all classes that derive from StripeEntity or implement INestedOptions
+            var stripeClasses = GetSubclassesOf(typeof(StripeEntity));
+            stripeClasses.AddRange(GetClassesWithInterface(typeof(INestedOptions)));
+
+            foreach (var stripeClass in stripeClasses)
+            {
+                foreach (var property in GetPropertiesToCheck(stripeClass))
+                {
+                    // Skip properties that don't have a `JsonProperty` attribute
+                    var jsonPropertyAttribute = property.GetCustomAttribute<JsonPropertyNameAttribute>();
+                    if (jsonPropertyAttribute == null)
+                    {
+                        continue;
+                    }
+
+                    if (!property.IsNotPublic)
+                    {
+                        continue;
+                    }
+
+                    // Check the class attributes; JsonConverter must be specified STJMemberSerializationOptIn
+                    var jsonConverterAttribute = stripeClass.GetCustomAttribute<JsonConverterAttribute>();
+                    if (jsonConverterAttribute == null || jsonConverterAttribute.ConverterType != typeof(STJMemberSerializationOptIn))
+                    {
+                        results.Add($"{stripeClass.FullName}");
+                    }
+
+                    // If we get here, we can move on to the next class
+                    break;
+                }
+            }
+
+            var message = $"{AssertionMessage}\n{results.Count} affected classes: {string.Join(",", results)}";
+            AssertEmpty(results, message);
+        }
+    }
+}
+#endif
diff --git a/src/StripeTests/Wholesome/CorrectSystemTextJsonConvertersForTypes.cs b/src/StripeTests/Wholesome/CorrectSystemTextJsonConvertersForTypes.cs
new file mode 100644
index 0000000000..9f23b3a943
--- /dev/null
+++ b/src/StripeTests/Wholesome/CorrectSystemTextJsonConvertersForTypes.cs
@@ -0,0 +1,63 @@
+#if NET6_0_OR_GREATER
+namespace StripeTests.Wholesome
+{
+    using System;
+    using System.Collections.Generic;
+    using System.Reflection;
+    using System.Text.Json.Serialization;
+    using Stripe;
+    using Xunit;
+
+    /// <summary>
+    /// This wholesome test ensures that properties with types that require custom converters to
+    /// use the correct custom converter.  This checks the System.Text.Json attributes; see
+    /// CorrectJsonConvertersForTypes for the Newtonsoft Json checks.
+    /// </summary>
+    public class CorrectSystemTextJsonConvertersForTypes : WholesomeTest
+    {
+        private const string AssertionMessage =
+            "Found at least one property with a missing or incorrect [JsonConverter] attribute.";
+
+        [Fact]
+        public void Check()
+        {
+            var results = new List<string>();
+
+            // Get all classes that derive from StripeEntity or implement INestedOptions
+            var stripeClasses = GetSubclassesOf(typeof(StripeEntity));
+            stripeClasses.AddRange(GetClassesWithInterface(typeof(INestedOptions)));
+
+            foreach (var stripeClass in stripeClasses)
+            {
+                foreach (var property in GetPropertiesToCheck(stripeClass))
+                {
+                    var propType = property.PropertyType;
+                    if (Nullable.GetUnderlyingType(propType) != null)
+                    {
+                        propType = Nullable.GetUnderlyingType(propType);
+                    }
+
+                    // Skip properties that don't have a `JsonPropertyName` attribute
+                    // FIXME: this seems like an unnecessary test; why would we have a converter without a property name?
+                    var jsonPropertyNameAttribute = property.GetCustomAttribute<JsonPropertyNameAttribute>();
+                    if (jsonPropertyNameAttribute == null)
+                    {
+                        continue;
+                    }
+
+                    var ret = SystemTextJsonTestUtils.HasCorrectConverterType(propType, property);
+                    if (ret != null)
+                    {
+                        results.Add(
+                            $"{stripeClass.Name}.{property.Name}, expected = {ret.Item1}, "
+                                + $"actual = {ret.Item2}");
+                    }
+                }
+            }
+
+            var message = $"{AssertionMessage}\n{results.Count} affected properties: {string.Join(",", results)}";
+            AssertEmpty(results, message);
+        }
+    }
+}
+#endif
diff --git a/src/StripeTests/Wholesome/DontForgetEntityType.cs b/src/StripeTests/Wholesome/DontForgetEntityType.cs
index 0f81db611d..d31af4c717 100644
--- a/src/StripeTests/Wholesome/DontForgetEntityType.cs
+++ b/src/StripeTests/Wholesome/DontForgetEntityType.cs
@@ -1,4 +1,4 @@
-namespace StripeTests
+namespace StripeTests.Wholesome
 {
     using System;
     using System.Collections.Generic;
@@ -8,8 +8,8 @@ namespace StripeTests
     using Xunit;
 
     /// <summary>
-    /// This wholesome test ensures that all Stripe entity and options classes implement the
-    /// <c>IHasX</c> interfaces when they have matching properties.
+    /// This wholesome test ensures that all Stripe entity classes inherit from the
+    /// generic StripeEntity&lt;T&gt; with the type parameter set to the entity class.
     /// </summary>
     public class DontForgetEntityType : WholesomeTest
     {
diff --git a/src/StripeTests/Wholesome/DontForgetIHasInterfaces.cs b/src/StripeTests/Wholesome/DontForgetIHasInterfaces.cs
index 9957420b48..7ba3cfb227 100644
--- a/src/StripeTests/Wholesome/DontForgetIHasInterfaces.cs
+++ b/src/StripeTests/Wholesome/DontForgetIHasInterfaces.cs
@@ -1,4 +1,4 @@
-namespace StripeTests
+namespace StripeTests.Wholesome
 {
     using System;
     using System.Collections.Generic;
diff --git a/src/StripeTests/Wholesome/DontSerializeNullDeletedAttrs.cs b/src/StripeTests/Wholesome/DontSerializeNullDeletedAttrs.cs
index 48ea047495..97d6649c12 100644
--- a/src/StripeTests/Wholesome/DontSerializeNullDeletedAttrs.cs
+++ b/src/StripeTests/Wholesome/DontSerializeNullDeletedAttrs.cs
@@ -1,4 +1,4 @@
-namespace StripeTests
+namespace StripeTests.Wholesome
 {
     using System;
     using System.Collections.Generic;
@@ -7,6 +7,9 @@ namespace StripeTests
     using Newtonsoft.Json;
     using Stripe;
     using Xunit;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// This test checks that <see cref="Stripe.StripeEntity" /> subclasses that have a
@@ -24,6 +27,11 @@ public class DontSerializeNullDeletedAttrs : WholesomeTest
         public void Check()
         {
             List<string> results = new List<string>();
+            List<string> skipTheseClasses = new List<string>
+            {
+                // For some reason, Secret.Deleted is not nullable
+                "Stripe.Apps.Secret",
+            };
 
             // Get all StripeEntity subclasses
             var entityClasses = GetSubclassesOf(typeof(StripeEntity));
@@ -45,12 +53,23 @@ public void Check()
                     }
 
                     // Check that NullValueHanding is set to Ignore
-                    if (attribute.NullValueHandling == NullValueHandling.Ignore)
+                    bool hasNullValueHandling = attribute.NullValueHandling == NullValueHandling.Ignore;
+#if NET6_0_OR_GREATER
+                    if (!skipTheseClasses.Contains(entityClass.FullName))
                     {
-                        continue;
+                        // This feature is implemented as part of JsonIgnore in STJ; make sure
+                        // we have the correct ignore w/ condition.
+                        if (!SystemTextJsonTestUtils.HasCorrectNullValueHandlingAttribute(property))
+                        {
+                            hasNullValueHandling = false;
+                        }
                     }
+#endif
 
-                    results.Add($"{entityClass.Name}.{property.Name}");
+                    if (!hasNullValueHandling)
+                    {
+                        results.Add($"{entityClass.Name}.{property.Name}");
+                    }
                 }
             }
 
@@ -67,7 +86,8 @@ public void Check()
                 }
 
                 // Actually fail test
-                Assert.True(false, AssertionMessage);
+                var message = $"{AssertionMessage}\n{results.Count} affected properties: {string.Join(",", results)}";
+                Assert.True(false, message);
             }
         }
     }
diff --git a/src/StripeTests/Wholesome/JsonNamesAreSnakeCase.cs b/src/StripeTests/Wholesome/JsonNamesAreSnakeCase.cs
index 0b576f2e12..81a91a04a4 100644
--- a/src/StripeTests/Wholesome/JsonNamesAreSnakeCase.cs
+++ b/src/StripeTests/Wholesome/JsonNamesAreSnakeCase.cs
@@ -1,4 +1,4 @@
-namespace StripeTests
+namespace StripeTests.Wholesome
 {
     using System;
     using System.Collections.Generic;
diff --git a/src/StripeTests/Wholesome/JsonNamesMatchPropertyNames.cs b/src/StripeTests/Wholesome/JsonNamesMatchPropertyNames.cs
index ce900f3272..c8c2061215 100644
--- a/src/StripeTests/Wholesome/JsonNamesMatchPropertyNames.cs
+++ b/src/StripeTests/Wholesome/JsonNamesMatchPropertyNames.cs
@@ -1,4 +1,4 @@
-namespace StripeTests
+namespace StripeTests.Wholesome
 {
     using System;
     using System.Collections.Generic;
@@ -9,6 +9,9 @@ namespace StripeTests
     using Stripe;
     using Stripe.Infrastructure;
     using Xunit;
+#if NET6_0_OR_GREATER
+    using STJS = System.Text.Json.Serialization;
+#endif
 
     /// <summary>
     /// This wholesome test ensures that `JsonProperty` attributes in entity and options classes
@@ -45,7 +48,7 @@ public void Check()
 
             foreach (Type stripeClass in stripeClasses)
             {
-                foreach (PropertyInfo property in stripeClass.GetProperties())
+                foreach (PropertyInfo property in GetPropertiesToCheck(stripeClass))
                 {
                     var propType = property.PropertyType;
 
@@ -56,10 +59,41 @@ public void Check()
                         continue;
                     }
 
+                    var propertyName = property.Name;
+
+                    // expandable field json properties are prefixed with with Internal so
+                    // that they don't conflict with the public properties we expose to the
+                    // user
+                    var toStrip = "Internal";
+                    if (propertyName.StartsWith(toStrip))
+                    {
+                        propertyName = propertyName.Substring(toStrip.Length);
+                    }
+
                     var pascalCasedJsonName = ToPascalCase(jsonPropertyAttribute.PropertyName);
+                    var hasCorrectJsonPropertyName = false;
 
                     // Skip properties when the property name matches the JSON name
-                    if (property.Name == pascalCasedJsonName)
+                    if (propertyName == pascalCasedJsonName)
+                    {
+                        hasCorrectJsonPropertyName = true;
+                    }
+
+#if NET6_0_OR_GREATER
+                    var stjsJsonPropertyNameAttribute = property.GetCustomAttribute<STJS.JsonPropertyNameAttribute>();
+
+                    // Only check if there is a stjs property name attribute; another test will check
+                    // that the necessary attributes are present
+                    if (stjsJsonPropertyNameAttribute != null)
+                    {
+                        // Error on properties where the STJ property name doesn't match the Newtonsoft property name
+                        if (jsonPropertyAttribute.PropertyName != stjsJsonPropertyNameAttribute?.Name)
+                        {
+                            hasCorrectJsonPropertyName = false;
+                        }
+                    }
+#endif
+                    if (hasCorrectJsonPropertyName)
                     {
                         continue;
                     }
@@ -71,11 +105,12 @@ public void Check()
                         continue;
                     }
 
-                    results.Add($"{stripeClass.Name}.{property.Name}: {property.Name} != {pascalCasedJsonName}");
+                    results.Add($"{stripeClass.Name}.{property.Name}");
                 }
             }
 
-            AssertEmpty(results, AssertionMessage);
+            var message = $"{AssertionMessage}\n{results.Count} affected properties: {string.Join(",", results)}";
+            AssertEmpty(results, message);
         }
 
         private static string ToPascalCase(string snakeCase)
diff --git a/src/StripeTests/Wholesome/NewtonsoftAndSystemTextJsonOutputTheSameObject.cs b/src/StripeTests/Wholesome/NewtonsoftAndSystemTextJsonOutputTheSameObject.cs
new file mode 100644
index 0000000000..67446f36f9
--- /dev/null
+++ b/src/StripeTests/Wholesome/NewtonsoftAndSystemTextJsonOutputTheSameObject.cs
@@ -0,0 +1,394 @@
+#if NET6_0_OR_GREATER
+namespace StripeTests.Wholesome
+{
+    using System;
+    using System.Collections;
+    using System.Collections.Generic;
+    using System.Diagnostics;
+    using System.Linq;
+    using System.Reflection;
+    using Castle.DynamicProxy.Internal;
+    using Newtonsoft.Json;
+    using Stripe;
+    using Stripe.Events;
+    using Stripe.Infrastructure;
+    using Stripe.V2;
+    using Xunit;
+
+    using STJ = System.Text.Json;
+    using STJS = System.Text.Json.Serialization;
+
+    /// <summary>
+    /// This wholesome test ensures that for all StripeEntity classes, both Json.NET and
+    /// System.Text.Json serialize equivalent objects.  Equivalent objects have the same
+    /// keys and data formats, but not necessarily in the same order when converted to
+    /// string.
+    ///
+    /// Note that this is a very slow test, as it takes a lot of time to generate the test data.
+    /// </summary>
+    public class NewtonsoftAndSystemTextJsonOutputTheSameObject : WholesomeTest
+    {
+        private const string AssertionMessage =
+            "Found at least one class that serializes differently between Newtonsoft and System.Text.Json.";
+
+        private const string GenericTypeAssertionMessage =
+            "Found at least one generic type that is not checked.";
+
+        private void CheckOneStripeClass<T>(T instance, List<string> results)
+        {
+            var jsonNet = JsonUtils.SerializeObject(
+                instance,
+                Formatting.None,
+                StripeConfiguration.SerializerSettings);
+
+            var systemTextJson = STJ.JsonSerializer.Serialize(instance);
+
+            if (jsonNet != systemTextJson)
+            {
+                // Json.NET and STJ serialize doubles that can be represented as integers
+                // differently: Json.NET will add a trailing .0, whereas STJ by default
+                // will not.  For this test, if a straight comparison fails, lets try
+                // and strip the .0 in the jsonNet string.
+                jsonNet = jsonNet.Replace(".0,", ",").Replace(".0}", "}");
+                if (jsonNet != systemTextJson)
+                {
+                    results.Add($"{instance.GetType().FullName}");
+                }
+            }
+        }
+
+        [Fact]
+        public void Check()
+        {
+            List<string> results = new List<string>();
+
+            var stripeClasses = GetSubclassesOf(typeof(StripeEntity));
+            stripeClasses.AddRange(GetClassesWithInterface(typeof(INestedOptions)));
+            var genericTypes = new List<Type>();
+            var expandableObjectCache = new Dictionary<Type, object>();
+            foreach (TypeInfo stripeClass in stripeClasses)
+            {
+                expandableObjectCache[stripeClass] = null;
+            }
+
+            var typesWithExpandableFields = new List<Type>();
+
+            foreach (TypeInfo stripeClass in stripeClasses)
+            {
+                if (stripeClass.FullName.Contains("Stripe.StripeEntity"))
+                {
+                    // Skip StripeEntity and StripeEntity<T>
+                    continue;
+                }
+
+                if (stripeClass.Name.StartsWith("V1Billing"))
+                {
+                    Debugger.Break();
+                }
+
+                if (stripeClass.IsGenericType)
+                {
+                    // Handle generic types (container types) separately, because
+                    // they need to be instantiated with concrete type parameters
+                    // and there aren't that many.
+                    genericTypes.Add(stripeClass);
+                    continue;
+                }
+
+                // First, check that empty objects serialize correctly
+
+                // be careful with casts or explicit types here; explicit casts here will color
+                // the behavior of STJ Serialize
+                var instance = Activator.CreateInstance(stripeClass);
+                this.CheckOneStripeClass(instance, results);
+
+                // Next, fill the object with some reasonable defaults and check agian
+                this.PopulateWithReasonableDefaults(instance, null, expandableObjectCache);
+                this.CheckOneStripeClass(instance, results);
+
+                expandableObjectCache[stripeClass] = instance;
+
+                foreach (var property in GetPropertiesToCheck(stripeClass))
+                {
+                    if (typeof(IExpandableField).GetTypeInfo().IsAssignableFrom(property.PropertyType))
+                    {
+                        if (!typesWithExpandableFields.Contains(stripeClass))
+                        {
+                            typesWithExpandableFields.Add(stripeClass);
+                        }
+                    }
+                }
+            }
+
+            foreach (TypeInfo stripeClass in typesWithExpandableFields)
+            {
+                // be careful with casts or explicit types here; explicit casts here will color
+                // the behavior of STJ Serialize
+                var instance = Activator.CreateInstance(stripeClass);
+
+                // Next, fill the object with some reasonable defaults and check agian
+                this.PopulateWithReasonableDefaults(instance, null, expandableObjectCache);
+                this.CheckOneStripeClass(instance, results);
+            }
+
+            // Test the generic containers: StripeList, V2.StripeList, StripeSearchResults
+            this.CheckGenericTypes(genericTypes, results);
+
+            var message = $"{AssertionMessage}\n{results.Count} affected classes: {string.Join(",", results)}";
+            AssertEmpty(results, message);
+
+            message = $"{GenericTypeAssertionMessage}\n{results.Count} affected classes: {string.Join(",", results)}";
+            AssertEmpty(genericTypes.Select(t => t.Name).ToList(), message);
+        }
+
+        private object GetPopulatedObject(Type type, List<Type> seen, Dictionary<Type, object> expandedObjectCache)
+        {
+            if (type.IsNullableType())
+            {
+                return this.GetPopulatedObject(type.GenericTypeArguments[0], seen, expandedObjectCache);
+            }
+
+            if (type == typeof(bool))
+            {
+                return true;
+            }
+            else if (type == typeof(long))
+            {
+                return 123456L;
+            }
+            else if (type == typeof(double))
+            {
+                return 1.1;
+            }
+            else if (type == typeof(string))
+            {
+                return "aaaa";
+            }
+            else if (type == typeof(DateTime))
+            {
+                return DateTime.Now;
+            }
+            else if (type == typeof(decimal))
+            {
+                return 2.1m;
+            }
+            else if (typeof(IAnyOf).GetTypeInfo().IsAssignableFrom(type.GetTypeInfo()))
+            {
+                var anyOfClass = this.SelectOneOf(type.GenericTypeArguments, seen);
+                if (anyOfClass == null)
+                {
+                    // We've seen all the possible types; return null here
+                    return null;
+                }
+
+                seen.Add(anyOfClass);
+                var propValue = this.GetPopulatedObject(anyOfClass, seen, expandedObjectCache);
+                return Activator.CreateInstance(type, propValue);
+            }
+            else if (typeof(IExpandableField).GetTypeInfo().IsAssignableFrom(type.GetTypeInfo()))
+            {
+                IExpandableField propValue = (IExpandableField)Activator.CreateInstance(type);
+                propValue.Id = "obj_123";
+                if (type.GenericTypeArguments.Length > 0)
+                {
+                    var objectType = type.GenericTypeArguments[0];
+                    if (expandedObjectCache.ContainsKey(objectType))
+                    {
+                        propValue.ExpandedObject = expandedObjectCache[objectType];
+                    }
+                    else
+                    {
+                        propValue.ExpandedObject = this.GetPopulatedObject(objectType, seen, expandedObjectCache);
+                        expandedObjectCache[objectType] = propValue.ExpandedObject;
+                    }
+                }
+
+                return propValue;
+            }
+            else if (typeof(StringEnum).GetTypeInfo().IsAssignableFrom(type.GetTypeInfo()))
+            {
+                var enumValues = type.GetFields(BindingFlags.Public | BindingFlags.Static);
+                return enumValues[0].GetValue(null);
+            }
+            else if (type == typeof(System.IO.Stream))
+            {
+                // neither JSON library supports serializing Streams without a custom converter
+                // which we currently do not support within Stripe.net (we use the
+                // MultipartFormDataContent type for sending streams across the network).
+                return null;
+            }
+            else if (typeof(IList).GetTypeInfo().IsAssignableFrom(type.GetTypeInfo()))
+            {
+                var propValue = (IList)Activator.CreateInstance(type);
+                this.PopulateWithReasonableDefaults(propValue, seen, expandedObjectCache);
+                if (type.GenericTypeArguments.Length > 0)
+                {
+                    // Add some elements to the list
+                    var objectType = type.GenericTypeArguments[0];
+                    var value = this.GetPopulatedObject(objectType, seen, expandedObjectCache);
+                    if (value != null)
+                    {
+                        propValue.Add(value);
+                        value = this.GetPopulatedObject(objectType, seen, expandedObjectCache);
+                        if (value != null)
+                        {
+                            propValue.Add(value);
+                        }
+                    }
+                }
+
+                return propValue;
+            }
+            else if (typeof(IEnumerable).GetTypeInfo().IsAssignableFrom(type.GetTypeInfo()))
+            {
+                var propValue = Activator.CreateInstance(type);
+                this.PopulateWithReasonableDefaults(propValue, seen, expandedObjectCache);
+                return propValue;
+            }
+            else if (type.IsClass)
+            {
+                if (seen.Contains(type))
+                {
+                    return null;
+                }
+
+                seen.Add(type);
+                var propValue = Activator.CreateInstance(type);
+                this.PopulateWithReasonableDefaults(propValue, seen, expandedObjectCache);
+                return propValue;
+            }
+            else if (type.IsInterface)
+            {
+                // Pick the first subclass of this interface we havent seen yet.
+                var classes = GetClassesWithInterface(type);
+                var selected = this.SelectOneOf(classes, seen);
+                if (selected == null)
+                {
+                    // We've seen all the possible types; return null here
+                    return null;
+                }
+
+                seen.Add(selected);
+                var propValue = Activator.CreateInstance(selected);
+                this.PopulateWithReasonableDefaults(propValue, seen, expandedObjectCache);
+                return propValue;
+            }
+            else
+            {
+                throw new Exception($"Unknown property type {type}");
+            }
+        }
+
+        private Type SelectOneOf(IEnumerable<Type> availableTypes, List<Type> seen)
+        {
+            foreach (var type in availableTypes)
+            {
+                if (!seen.Contains(type))
+                {
+                    return type;
+                }
+            }
+
+            return null;
+        }
+
+        private T PopulateWithReasonableDefaults<T>(T instance, List<Type> seen, Dictionary<Type, object> expandedObjectCache)
+        {
+            expandedObjectCache = expandedObjectCache ?? new Dictionary<Type, object>();
+            foreach (var property in GetPropertiesToCheck(instance.GetType()))
+            {
+                if (property.GetCustomAttribute(typeof(STJS.JsonPropertyNameAttribute), false) == null)
+                {
+                    continue;
+                }
+
+                if (!property.CanWrite)
+                {
+                    continue;
+                }
+
+                var propertyType = property.PropertyType;
+                var newValue = this.GetPopulatedObject(propertyType, seen?.ToList() ?? new List<Type>(), expandedObjectCache);
+                property.SetValue(instance, newValue);
+            }
+
+            return instance;
+        }
+
+        private void CheckGenericTypes(List<Type> genericTypes, List<string> results)
+        {
+            var customer1 = new Customer
+            {
+                Id = "cust_123",
+                Object = "customer",
+                Name = "Jenny Rosen",
+                Email = "jrosen@example.com",
+            };
+            var customer2 = new Customer
+            {
+                Id = "cust_124",
+                Object = "customer",
+                Name = "John Smith",
+                Email = "john@example.com",
+            };
+            var customer3 = new Customer
+            {
+                Id = "cust_125",
+                Object = "customer",
+                Name = "Jenny Rosen",
+                Email = "jrosen@example.com",
+            };
+
+            var list = new Stripe.StripeList<Customer>
+            {
+                Object = "list_object",
+                Data = new List<Customer>
+                {
+                    customer1, customer2, customer3,
+                },
+                HasMore = true,
+                Url = "/v1/customers",
+            };
+
+            this.CheckOneStripeClass(list, results);
+            var listType = list.GetType();
+            genericTypes.RemoveAll(gt => listType.FullName.StartsWith(gt.FullName));
+
+            // This also tests polymorphic types like V2.Event within
+            // the list
+            var v2List = new Stripe.V2.StripeList<Stripe.V2.Event>
+            {
+                Data = new List<Stripe.V2.Event>
+                {
+                    this.PopulateWithReasonableDefaults(new V1BillingMeterErrorReportTriggeredEvent(), null, new Dictionary<Type, object>()),
+                    this.PopulateWithReasonableDefaults(new V1BillingMeterErrorReportTriggeredEvent(), null, new Dictionary<Type, object>()),
+                    this.PopulateWithReasonableDefaults(new V1BillingMeterErrorReportTriggeredEvent(), null, new Dictionary<Type, object>()),
+                },
+                NextPageUrl = "/v2/customers?page=1234",
+                PreviousPageUrl = null,
+            };
+
+            this.CheckOneStripeClass(v2List, results);
+            var v2ListType = v2List.GetType();
+            genericTypes.RemoveAll(gt => v2ListType.FullName.StartsWith(gt.FullName));
+
+            var searchResult = new Stripe.StripeSearchResult<Customer>
+            {
+                Object = "search_result",
+                Data = new List<Customer>
+                {
+                    customer1, customer2, customer3,
+                },
+                HasMore = true,
+                NextPage = "1234",
+                TotalCount = 12,
+                Url = "/v1/customers",
+            };
+
+            this.CheckOneStripeClass(searchResult, results);
+            var searchResultType = searchResult.GetType();
+            genericTypes.RemoveAll(gt => searchResultType.FullName.StartsWith(gt.FullName));
+        }
+    }
+}
+#endif
diff --git a/src/StripeTests/Wholesome/NoDuplicateJsonPropertyValues.cs b/src/StripeTests/Wholesome/NoDuplicateJsonPropertyValues.cs
index 5b550e813e..95819731c6 100644
--- a/src/StripeTests/Wholesome/NoDuplicateJsonPropertyValues.cs
+++ b/src/StripeTests/Wholesome/NoDuplicateJsonPropertyValues.cs
@@ -1,4 +1,4 @@
-namespace StripeTests
+namespace StripeTests.Wholesome
 {
     using System;
     using System.Collections.Generic;
diff --git a/src/StripeTests/Wholesome/NullableValueTypes.cs b/src/StripeTests/Wholesome/NullableValueTypes.cs
index 0d948facf1..7e98408a2b 100644
--- a/src/StripeTests/Wholesome/NullableValueTypes.cs
+++ b/src/StripeTests/Wholesome/NullableValueTypes.cs
@@ -1,4 +1,4 @@
-namespace StripeTests
+namespace StripeTests.Wholesome
 {
     using System;
     using System.Collections.Generic;
diff --git a/src/StripeTests/Wholesome/PropertiesHaveAllNecessaryJsonAttributes.cs b/src/StripeTests/Wholesome/PropertiesHaveAllNecessaryJsonAttributes.cs
new file mode 100644
index 0000000000..4010bfdc28
--- /dev/null
+++ b/src/StripeTests/Wholesome/PropertiesHaveAllNecessaryJsonAttributes.cs
@@ -0,0 +1,57 @@
+namespace StripeTests.Wholesome
+{
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Reflection;
+    using Stripe;
+    using Xunit;
+
+    /// <summary>
+    /// This wholesome test ensures that if any class property has Newtonsoft JSON attributes,
+    /// it also has all other necessary/equivalent attributes (i.e. for System.Text.Json support)
+    /// attributes.
+    /// </summary>
+    public class PropertiesHaveAllNecessaryJsonAttributes : WholesomeTest
+    {
+        private const string AssertionMessage =
+            "Found at least one class with a Json*Attribute that is missing other necessary (e.g. System.Text.Json) attributes.";
+
+        [Fact]
+        public void Check()
+        {
+            List<string> results = new List<string>();
+
+            // Get all classes in the Stripe namespace
+            var assembly = typeof(StripeEntity).Assembly;
+            var types = assembly.DefinedTypes.Where(t => t.FullName.StartsWith("Stripe."));
+            foreach (TypeInfo type in types)
+            {
+                foreach (ExtendedPropertyInfo property in GetPropertiesToCheck(type))
+                {
+                    if (property.GetCustomAttribute(typeof(NoSystemTextJsonAttributesNeededAttribute), false) != null)
+                    {
+                        continue;
+                    }
+
+                    foreach (Attribute attribute in property.GetCustomAttributes())
+                    {
+                        if (attribute.GetType().Namespace.StartsWith("Newtonsoft", true, null))
+                        {
+#if NET6_0_OR_GREATER
+                            bool hasCorrectAttributes = SystemTextJsonTestUtils.HasCorrectAttributes(attribute, property.GetCustomAttributes(), property.IsNotPublic);
+                            if (!hasCorrectAttributes)
+                            {
+                                results.Add($"{type.FullName}.{property.Name}");
+                            }
+#endif
+                        }
+                    }
+                }
+            }
+
+            var message = $"{AssertionMessage}\n{results.Count} affected properties: {string.Join(",", results)}";
+            AssertEmpty(results, message);
+        }
+    }
+}
diff --git a/src/StripeTests/Wholesome/PropertiesHaveJsonAttributes.cs b/src/StripeTests/Wholesome/PropertiesHaveJsonAttributes.cs
index 35d2086066..4c08ae7e4e 100644
--- a/src/StripeTests/Wholesome/PropertiesHaveJsonAttributes.cs
+++ b/src/StripeTests/Wholesome/PropertiesHaveJsonAttributes.cs
@@ -1,4 +1,4 @@
-namespace StripeTests
+namespace StripeTests.Wholesome
 {
     using System;
     using System.Collections.Generic;
@@ -30,7 +30,7 @@ public void Check()
 
             foreach (var stripeClass in stripeClasses)
             {
-                foreach (var property in stripeClass.GetProperties())
+                foreach (var property in GetPropertiesToCheck(stripeClass))
                 {
                     var hasJsonAttribute = false;
 
diff --git a/src/StripeTests/Wholesome/SystemTextJsonTestUtils.cs b/src/StripeTests/Wholesome/SystemTextJsonTestUtils.cs
new file mode 100644
index 0000000000..4bf39965b6
--- /dev/null
+++ b/src/StripeTests/Wholesome/SystemTextJsonTestUtils.cs
@@ -0,0 +1,214 @@
+#if NET6_0_OR_GREATER
+namespace StripeTests.Wholesome
+{
+    using System;
+    using System.Collections;
+    using System.Collections.Generic;
+    using System.Diagnostics;
+    using System.Linq;
+    using System.Reflection;
+    using System.Text;
+    using Castle.Core.Internal;
+    using Newtonsoft.Json;
+    using Stripe;
+    using Stripe.Infrastructure;
+    using STJS = System.Text.Json.Serialization;
+
+    public class SystemTextJsonTestUtils
+    {
+        private static bool breakOnIncorrectAttributes = Debugger.IsAttached;
+
+        // This maps newtonsoft types to equivalent STJ types so we can check that
+        // if the key type is present the value type is also present.
+        private static Dictionary<Type, Type> equivalents = new Dictionary<Type, Type>
+        {
+            { typeof(JsonConverterAttribute), typeof(STJS.JsonConverterAttribute) },
+            { typeof(JsonPropertyAttribute), typeof(STJS.JsonPropertyNameAttribute) },
+
+            // STJ does not have an equivalent for JsonObject to control member serialization
+            // (https://learn.microsoft.com/en-us/dotnet/standard/serialization/system-text-json/migrate-from-newtonsoft?pivots=dotnet-6-0#jsonobjectattribute)
+            // Instead, every public property to be ignored must be marked with a JsonIgnore attribute
+            // This is ok, as we verify this verified as part of the PropertiesHaveJsonAttributes
+            // STJ DOES have built in converters for e.g. IEnumerable
+            { typeof(JsonIgnoreAttribute), typeof(STJS.JsonIgnoreAttribute) },
+            { typeof(JsonExtensionDataAttribute), typeof(STJS.JsonExtensionDataAttribute) },
+        };
+
+        static SystemTextJsonTestUtils()
+        {
+            var attrs = AttributeTestUtils.FindAllUsedAttributesFromNamespace("Newtonsoft");
+            foreach (var attr in attrs)
+            {
+                var attrType = attr.GetType();
+                if (attrType == typeof(JsonObjectAttribute))
+                {
+                    // Skip JsonObject; see note above
+                    continue;
+                }
+
+                if (!equivalents.ContainsKey(attrType))
+                {
+                    throw new Exception($"Missing System.Text.Json equivalent for {attrType.Namespace}.{attrType.Name}");
+                }
+            }
+        }
+
+        public static bool HasCorrectAttributes(Attribute jsonAttribute, IEnumerable<Attribute> toSearch, bool isNotPublic)
+        {
+            // If the jsonAttribute type isn't present, do nothing; we confirm above that all
+            // expected types have an entry in the map
+            if (!equivalents.TryGetValue(jsonAttribute.GetType(), out var expectedEquivalentType))
+            {
+                return true;
+            }
+
+            var hasCorrectEquivalentAttribute = false;
+
+            // technically, this means "is included" which is true for public properties or
+            // if we find the JsonInclude attribute
+            foreach (var attribute in toSearch)
+            {
+                if (attribute.GetType() == expectedEquivalentType)
+                {
+                    hasCorrectEquivalentAttribute = true;
+                    break;
+                }
+
+                // This is weird special case; we add STJObjectConverter
+                // as class attributes on the interfaces and so they wont
+                // be on the propoperties.
+                if (attribute is JsonConverterAttribute converterAttribute)
+                {
+                    if (converterAttribute.ConverterType == typeof(StripeObjectConverter))
+                    {
+                        hasCorrectEquivalentAttribute = true;
+                        break;
+                    }
+                }
+            }
+
+            if (!hasCorrectEquivalentAttribute && breakOnIncorrectAttributes)
+            {
+                Debugger.Break();
+            }
+
+            return hasCorrectEquivalentAttribute;
+        }
+
+        public static Tuple<string, string> HasCorrectConverterType(Type type, MemberInfo attributeTarget)
+        {
+            Type expectedConverterType = null;
+            Type[] expectedGenericTypeArguments = null;
+
+            var classTarget = attributeTarget as TypeInfo;
+            var propertyTarget = attributeTarget as PropertyInfo;
+
+            // In V1 DateTime properties require a UnixDateTimeConverter, in V2
+            // datetime conversion is handled by Newtonsoft.Json
+            // Note that the Stripe.Events namespace contains V2 events; there are
+            // some whos name starts with V1 but those are V1 payloads inside V2
+            // style events.
+            var v2Class =
+                propertyTarget?.DeclaringType.Namespace.Contains("V2") == true ||
+                propertyTarget?.DeclaringType.Namespace == "Stripe.Events";
+            if (type == typeof(DateTime) && !v2Class)
+            {
+                expectedConverterType = typeof(STJUnixDateTimeConverter);
+            }
+            else if (typeof(IAnyOf).GetTypeInfo().IsAssignableFrom(type.GetTypeInfo()))
+            {
+                expectedConverterType = typeof(STJAnyOfConverter);
+            }
+            else if (typeof(IExpandableField).GetTypeInfo().IsAssignableFrom(type.GetTypeInfo()))
+            {
+                if (classTarget != null)
+                {
+                    // because the annotation is going above a class, we don't have
+                    // access to the specific type parameter for the expandable field
+                    // so we add the annotation with <IHasId> as the parameter, and it
+                    // just works.
+                    expectedConverterType = typeof(STJExpandableFieldConverterFactory);
+                }
+                else if (propertyTarget != null)
+                {
+                    expectedConverterType = typeof(STJExpandableFieldConverter<>);
+                    expectedGenericTypeArguments = type.GenericTypeArguments;
+                }
+                else
+                {
+                    throw new Exception($"Unsupported attribute target {attributeTarget.Name}");
+                }
+            }
+            else if (type.GetTypeInfo().IsInterface && classTarget != null)
+            {
+                expectedConverterType = typeof(STJStripeObjectConverter);
+            }
+            else
+            {
+                var nonpublicProperties = type.GetProperties(BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Static);
+                foreach (var property in nonpublicProperties)
+                {
+                    if (property.GetCustomAttribute(typeof(STJS.JsonPropertyNameAttribute), false) != null)
+                    {
+                        expectedConverterType = typeof(STJMemberSerializationOptIn);
+                        attributeTarget = type;
+                        break;
+                    }
+                }
+            }
+
+            var expectedConverterName = GetConverterName(
+                expectedConverterType,
+                expectedGenericTypeArguments);
+
+            Type actualConverterType = null;
+            Type[] actualGenericTypeArguments = null;
+
+            // For this check, we are looking for the attribute on the class/type that is passed in.
+            var jsonConverterAttribute = attributeTarget.GetCustomAttribute<STJS.JsonConverterAttribute>();
+            if (jsonConverterAttribute != null)
+            {
+                actualConverterType = jsonConverterAttribute.ConverterType;
+                actualGenericTypeArguments = actualConverterType.GenericTypeArguments;
+            }
+
+            var actualConverterName = GetConverterName(
+                actualConverterType,
+                actualGenericTypeArguments);
+
+            if (expectedConverterName == actualConverterName)
+            {
+                return null;
+            }
+
+            return Tuple.Create(expectedConverterName, actualConverterName);
+        }
+
+        internal static bool HasCorrectNullValueHandlingAttribute(PropertyInfo property)
+        {
+            var stjAttribute = property.GetCustomAttribute<STJS.JsonIgnoreAttribute>();
+            return stjAttribute != null && stjAttribute.Condition == STJS.JsonIgnoreCondition.WhenWritingNull;
+        }
+
+        private static string GetConverterName(Type type, Type[] genericTypeArguments)
+        {
+            if (type == null)
+            {
+                return "null";
+            }
+
+            var sb = new StringBuilder();
+            sb.Append(type.Name);
+
+            if (genericTypeArguments != null && genericTypeArguments.Length > 0)
+            {
+                sb.Append("<");
+                sb.Append(string.Join(", ", genericTypeArguments.Select(t => t.Name)));
+                sb.Append(">");
+            }
+
+            return sb.ToString();
+        }
+    }
+}
+#endif
diff --git a/src/StripeTests/Wholesome/UseListsInsteadOfArrays.cs b/src/StripeTests/Wholesome/UseListsInsteadOfArrays.cs
index 1b700365f3..f3e1af88c9 100644
--- a/src/StripeTests/Wholesome/UseListsInsteadOfArrays.cs
+++ b/src/StripeTests/Wholesome/UseListsInsteadOfArrays.cs
@@ -1,4 +1,4 @@
-namespace StripeTests
+namespace StripeTests.Wholesome
 {
     using System;
     using System.Collections.Generic;
diff --git a/src/StripeTests/Wholesome/WholesomeTest.cs b/src/StripeTests/Wholesome/WholesomeTest.cs
index 1346c0a1aa..7ce68d4bd8 100644
--- a/src/StripeTests/Wholesome/WholesomeTest.cs
+++ b/src/StripeTests/Wholesome/WholesomeTest.cs
@@ -1,11 +1,89 @@
-namespace StripeTests
+namespace StripeTests.Wholesome
 {
     using System;
     using System.Collections.Generic;
+    using System.Globalization;
     using System.Linq;
     using System.Reflection;
+    using System.Runtime.CompilerServices;
     using Xunit;
 
+#pragma warning disable SA1402 // File may only contain a single type
+#pragma warning disable SA1649 // File name should match first type name
+    internal class ExtendedPropertyInfo : PropertyInfo
+#pragma warning restore SA1649 // File name should match first type name
+#pragma warning restore SA1402 // File may only contain a single type
+    {
+        private readonly PropertyInfo propertyInfo;
+
+        internal ExtendedPropertyInfo(PropertyInfo propertyInfo, bool isNotPublic)
+        {
+            this.propertyInfo = propertyInfo;
+            this.IsNotPublic = isNotPublic;
+        }
+
+        public bool IsNotPublic { get; }
+
+        public override PropertyAttributes Attributes => this.propertyInfo.Attributes;
+
+        public override bool CanRead => this.propertyInfo.CanRead;
+
+        public override bool CanWrite => this.propertyInfo.CanWrite;
+
+        public override Type PropertyType => this.propertyInfo.PropertyType;
+
+        public override Type DeclaringType => this.propertyInfo.DeclaringType;
+
+        public override string Name => this.propertyInfo.Name;
+
+        public override Type ReflectedType => this.propertyInfo.ReflectedType;
+
+        public override MethodInfo[] GetAccessors(bool nonPublic)
+        {
+            return this.propertyInfo.GetAccessors(nonPublic);
+        }
+
+        public override MethodInfo GetGetMethod(bool nonPublic)
+        {
+            return this.propertyInfo.GetGetMethod(nonPublic);
+        }
+
+        public override ParameterInfo[] GetIndexParameters()
+        {
+            return this.propertyInfo.GetIndexParameters();
+        }
+
+        public override MethodInfo GetSetMethod(bool nonPublic)
+        {
+            return this.propertyInfo.GetSetMethod(nonPublic);
+        }
+
+        public override object GetValue(object obj, BindingFlags invokeAttr, Binder binder, object[] index, CultureInfo culture)
+        {
+            return this.propertyInfo.GetValue(obj, invokeAttr, binder, index, culture);
+        }
+
+        public override void SetValue(object obj, object value, BindingFlags invokeAttr, Binder binder, object[] index, CultureInfo culture)
+        {
+            this.propertyInfo.SetValue(obj, value, invokeAttr, binder, index, culture);
+        }
+
+        public override object[] GetCustomAttributes(bool inherit)
+        {
+            return this.propertyInfo.GetCustomAttributes(inherit);
+        }
+
+        public override object[] GetCustomAttributes(Type attributeType, bool inherit)
+        {
+            return this.propertyInfo.GetCustomAttributes(attributeType, inherit);
+        }
+
+        public override bool IsDefined(Type attributeType, bool inherit)
+        {
+            return this.propertyInfo.IsDefined(attributeType, inherit);
+        }
+    }
+
     /// <summary>
     /// Parent class for all wholesome tests. Wholesome tests check the state of the Stripe.net
     /// codebase and prevent inconsistencies and programming mistakes.
@@ -52,6 +130,25 @@ protected static List<Type> GetSubclassesOf(Type parentClass)
                 .ToList();
         }
 
+        /// <summary>
+        /// Returns the list of interfaces that extend the provided interface.
+        /// </summary>
+        /// <param name="parent">The parent interface.</param>
+        /// <returns>The list of interfaces that extend the provided interface.</returns>
+        protected static List<Type> GetSubinterfacesOf(Type parent)
+        {
+            if (parent.IsInterface)
+            {
+                return new List<Type>();
+            }
+
+            var assembly = parent.GetTypeInfo().Assembly;
+            return assembly.DefinedTypes
+                .Where(t => t.IsInterface && parent.IsAssignableFrom(t))
+                .Select(t => t.AsType())
+                .ToList();
+        }
+
         /// <summary>
         /// Returns the list of classes that implement the provided interface.
         /// </summary>
@@ -65,5 +162,21 @@ protected static List<Type> GetClassesWithInterface(Type implementedInterface)
                 .Select(t => t.AsType())
                 .ToList();
         }
+
+        /// <summary>
+        /// Gets all public and non public instance properties declared in the type.
+        ///
+        /// This does not get properties from any super types.
+        /// </summary>
+        /// <param name="type">The type to get properties from.</param>
+        /// <returns>Properties to check.</returns>
+        internal static IEnumerable<ExtendedPropertyInfo> GetPropertiesToCheck(Type type)
+        {
+            // Gets the nonpublic properties (private, internal, protected, etc)
+            var nonpublicProperties = type.GetProperties(BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.DeclaredOnly);
+            var allProperties = type.GetProperties(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.DeclaredOnly);
+
+            return allProperties.Select(p => new ExtendedPropertyInfo(p, nonpublicProperties.Contains(p)));
+        }
     }
 }