diff --git a/src/Libraries/Microsoft.Extensions.AI.Evaluation.Reporting.Azure/JsonSerialization/AzureStorageJsonUtilities.cs b/src/Libraries/Microsoft.Extensions.AI.Evaluation.Reporting.Azure/JsonSerialization/AzureStorageJsonUtilities.cs
index c2f7b418b01..da8d699699d 100644
--- a/src/Libraries/Microsoft.Extensions.AI.Evaluation.Reporting.Azure/JsonSerialization/AzureStorageJsonUtilities.cs
+++ b/src/Libraries/Microsoft.Extensions.AI.Evaluation.Reporting.Azure/JsonSerialization/AzureStorageJsonUtilities.cs
@@ -1,7 +1,6 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
-using System.Text.Encodings.Web;
 using System.Text.Json;
 using System.Text.Json.Serialization;
 using System.Text.Json.Serialization.Metadata;
@@ -32,7 +31,6 @@ private static JsonSerializerOptions CreateJsonSerializerOptions(bool writeInden
         var options = new JsonSerializerOptions(JsonContext.Default.Options)
         {
             WriteIndented = writeIndented,
-            Encoder = JavaScriptEncoder.UnsafeRelaxedJsonEscaping,
         };
         options.TypeInfoResolverChain.Add(AIJsonUtilities.DefaultOptions.TypeInfoResolver!);
         options.MakeReadOnly();
diff --git a/src/Libraries/Microsoft.Extensions.AI.Evaluation.Reporting/CSharp/JsonSerialization/JsonUtilities.cs b/src/Libraries/Microsoft.Extensions.AI.Evaluation.Reporting/CSharp/JsonSerialization/JsonUtilities.cs
index 9427b67be8e..a94282ad7f3 100644
--- a/src/Libraries/Microsoft.Extensions.AI.Evaluation.Reporting/CSharp/JsonSerialization/JsonUtilities.cs
+++ b/src/Libraries/Microsoft.Extensions.AI.Evaluation.Reporting/CSharp/JsonSerialization/JsonUtilities.cs
@@ -1,7 +1,6 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
-using System.Text.Encodings.Web;
 using System.Text.Json;
 using System.Text.Json.Serialization;
 using System.Text.Json.Serialization.Metadata;
@@ -35,7 +34,6 @@ private static JsonSerializerOptions CreateJsonSerializerOptions(bool writeInden
         var options = new JsonSerializerOptions(JsonContext.Default.Options)
         {
             WriteIndented = writeIndented,
-            Encoder = JavaScriptEncoder.UnsafeRelaxedJsonEscaping,
         };
         options.TypeInfoResolverChain.Add(AIJsonUtilities.DefaultOptions.TypeInfoResolver!);
         options.MakeReadOnly();