diff --git a/modules/openapi-generator/src/main/resources/kotlin-client/jvm-common/infrastructure/Serializer.kt.mustache b/modules/openapi-generator/src/main/resources/kotlin-client/jvm-common/infrastructure/Serializer.kt.mustache
index f27aa725a486..74525f44f78e 100644
--- a/modules/openapi-generator/src/main/resources/kotlin-client/jvm-common/infrastructure/Serializer.kt.mustache
+++ b/modules/openapi-generator/src/main/resources/kotlin-client/jvm-common/infrastructure/Serializer.kt.mustache
@@ -131,11 +131,6 @@ import java.util.concurrent.atomic.AtomicLong
         .configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, {{failOnUnknownProperties}})
 {{/jackson}}
 {{#kotlinx_serialization}}
-    @Deprecated("Use Serializer.kotlinxSerializationAdapters instead", replaceWith = ReplaceWith("Serializer.kotlinxSerializationAdapters"), level = DeprecationLevel.ERROR)
-    @JvmStatic
-    val kotlinSerializationAdapters: SerializersModule
-        get() { return kotlinxSerializationAdapters }
-
     private var isAdaptersInitialized = false
 
     @JvmStatic
@@ -169,11 +164,6 @@ import java.util.concurrent.atomic.AtomicLong
             field = value
         }
 
-    @Deprecated("Use Serializer.kotlinxSerializationJson instead", replaceWith = ReplaceWith("Serializer.kotlinxSerializationJson"), level = DeprecationLevel.ERROR)
-    @JvmStatic
-    val jvmJson: Json
-        get() { return kotlinxSerializationJson }
-
     private var isJsonInitialized = false
 
     @JvmStatic
diff --git a/samples/client/petstore/kotlin-allOf-discriminator-kotlinx-serialization/src/main/kotlin/org/openapitools/client/infrastructure/Serializer.kt b/samples/client/petstore/kotlin-allOf-discriminator-kotlinx-serialization/src/main/kotlin/org/openapitools/client/infrastructure/Serializer.kt
index 626797181220..1bed97472b3a 100644
--- a/samples/client/petstore/kotlin-allOf-discriminator-kotlinx-serialization/src/main/kotlin/org/openapitools/client/infrastructure/Serializer.kt
+++ b/samples/client/petstore/kotlin-allOf-discriminator-kotlinx-serialization/src/main/kotlin/org/openapitools/client/infrastructure/Serializer.kt
@@ -17,11 +17,6 @@ import java.util.concurrent.atomic.AtomicInteger
 import java.util.concurrent.atomic.AtomicLong
 
 object Serializer {
-    @Deprecated("Use Serializer.kotlinxSerializationAdapters instead", replaceWith = ReplaceWith("Serializer.kotlinxSerializationAdapters"), level = DeprecationLevel.ERROR)
-    @JvmStatic
-    val kotlinSerializationAdapters: SerializersModule
-        get() { return kotlinxSerializationAdapters }
-
     private var isAdaptersInitialized = false
 
     @JvmStatic
@@ -53,11 +48,6 @@ object Serializer {
             field = value
         }
 
-    @Deprecated("Use Serializer.kotlinxSerializationJson instead", replaceWith = ReplaceWith("Serializer.kotlinxSerializationJson"), level = DeprecationLevel.ERROR)
-    @JvmStatic
-    val jvmJson: Json
-        get() { return kotlinxSerializationJson }
-
     private var isJsonInitialized = false
 
     @JvmStatic
diff --git a/samples/client/petstore/kotlin-json-request-string/src/main/kotlin/org/openapitools/client/infrastructure/Serializer.kt b/samples/client/petstore/kotlin-json-request-string/src/main/kotlin/org/openapitools/client/infrastructure/Serializer.kt
index 626797181220..1bed97472b3a 100644
--- a/samples/client/petstore/kotlin-json-request-string/src/main/kotlin/org/openapitools/client/infrastructure/Serializer.kt
+++ b/samples/client/petstore/kotlin-json-request-string/src/main/kotlin/org/openapitools/client/infrastructure/Serializer.kt
@@ -17,11 +17,6 @@ import java.util.concurrent.atomic.AtomicInteger
 import java.util.concurrent.atomic.AtomicLong
 
 object Serializer {
-    @Deprecated("Use Serializer.kotlinxSerializationAdapters instead", replaceWith = ReplaceWith("Serializer.kotlinxSerializationAdapters"), level = DeprecationLevel.ERROR)
-    @JvmStatic
-    val kotlinSerializationAdapters: SerializersModule
-        get() { return kotlinxSerializationAdapters }
-
     private var isAdaptersInitialized = false
 
     @JvmStatic
@@ -53,11 +48,6 @@ object Serializer {
             field = value
         }
 
-    @Deprecated("Use Serializer.kotlinxSerializationJson instead", replaceWith = ReplaceWith("Serializer.kotlinxSerializationJson"), level = DeprecationLevel.ERROR)
-    @JvmStatic
-    val jvmJson: Json
-        get() { return kotlinxSerializationJson }
-
     private var isJsonInitialized = false
 
     @JvmStatic
diff --git a/samples/client/petstore/kotlin-retrofit2-kotlinx_serialization/src/main/kotlin/org/openapitools/client/infrastructure/Serializer.kt b/samples/client/petstore/kotlin-retrofit2-kotlinx_serialization/src/main/kotlin/org/openapitools/client/infrastructure/Serializer.kt
index 626797181220..1bed97472b3a 100644
--- a/samples/client/petstore/kotlin-retrofit2-kotlinx_serialization/src/main/kotlin/org/openapitools/client/infrastructure/Serializer.kt
+++ b/samples/client/petstore/kotlin-retrofit2-kotlinx_serialization/src/main/kotlin/org/openapitools/client/infrastructure/Serializer.kt
@@ -17,11 +17,6 @@ import java.util.concurrent.atomic.AtomicInteger
 import java.util.concurrent.atomic.AtomicLong
 
 object Serializer {
-    @Deprecated("Use Serializer.kotlinxSerializationAdapters instead", replaceWith = ReplaceWith("Serializer.kotlinxSerializationAdapters"), level = DeprecationLevel.ERROR)
-    @JvmStatic
-    val kotlinSerializationAdapters: SerializersModule
-        get() { return kotlinxSerializationAdapters }
-
     private var isAdaptersInitialized = false
 
     @JvmStatic
@@ -53,11 +48,6 @@ object Serializer {
             field = value
         }
 
-    @Deprecated("Use Serializer.kotlinxSerializationJson instead", replaceWith = ReplaceWith("Serializer.kotlinxSerializationJson"), level = DeprecationLevel.ERROR)
-    @JvmStatic
-    val jvmJson: Json
-        get() { return kotlinxSerializationJson }
-
     private var isJsonInitialized = false
 
     @JvmStatic
diff --git a/samples/client/petstore/kotlin-uppercase-enum/src/main/kotlin/org/openapitools/client/infrastructure/Serializer.kt b/samples/client/petstore/kotlin-uppercase-enum/src/main/kotlin/org/openapitools/client/infrastructure/Serializer.kt
index 626797181220..1bed97472b3a 100644
--- a/samples/client/petstore/kotlin-uppercase-enum/src/main/kotlin/org/openapitools/client/infrastructure/Serializer.kt
+++ b/samples/client/petstore/kotlin-uppercase-enum/src/main/kotlin/org/openapitools/client/infrastructure/Serializer.kt
@@ -17,11 +17,6 @@ import java.util.concurrent.atomic.AtomicInteger
 import java.util.concurrent.atomic.AtomicLong
 
 object Serializer {
-    @Deprecated("Use Serializer.kotlinxSerializationAdapters instead", replaceWith = ReplaceWith("Serializer.kotlinxSerializationAdapters"), level = DeprecationLevel.ERROR)
-    @JvmStatic
-    val kotlinSerializationAdapters: SerializersModule
-        get() { return kotlinxSerializationAdapters }
-
     private var isAdaptersInitialized = false
 
     @JvmStatic
@@ -53,11 +48,6 @@ object Serializer {
             field = value
         }
 
-    @Deprecated("Use Serializer.kotlinxSerializationJson instead", replaceWith = ReplaceWith("Serializer.kotlinxSerializationJson"), level = DeprecationLevel.ERROR)
-    @JvmStatic
-    val jvmJson: Json
-        get() { return kotlinxSerializationJson }
-
     private var isJsonInitialized = false
 
     @JvmStatic