diff --git a/src/Adapter/MSTest.TestAdapter/Helpers/ReflectHelper.cs b/src/Adapter/MSTest.TestAdapter/Helpers/ReflectHelper.cs
index e4f3968e35..f321c9fb10 100644
--- a/src/Adapter/MSTest.TestAdapter/Helpers/ReflectHelper.cs
+++ b/src/Adapter/MSTest.TestAdapter/Helpers/ReflectHelper.cs
@@ -272,7 +272,6 @@ internal static TestIdGenerationStrategy GetTestIdGenerationStrategy(Assembly as
     /// Gets TestDataSourceDiscovery assembly level attribute.
     /// </summary>
     /// <param name="assembly"> The test assembly. </param>
-    [Obsolete]
     internal static TestDataSourceDiscoveryOption? GetTestDataSourceDiscoveryOption(Assembly assembly)
         => PlatformServiceProvider.Instance.ReflectionOperations.GetCustomAttributes(assembly, typeof(TestDataSourceDiscoveryAttribute))
             .OfType<TestDataSourceDiscoveryAttribute>()
diff --git a/src/TestFramework/TestFramework/Attributes/DataSource/TestDataSourceDiscoveryAttribute.cs b/src/TestFramework/TestFramework/Attributes/DataSource/TestDataSourceDiscoveryAttribute.cs
index 660735c263..6d957075d6 100644
--- a/src/TestFramework/TestFramework/Attributes/DataSource/TestDataSourceDiscoveryAttribute.cs
+++ b/src/TestFramework/TestFramework/Attributes/DataSource/TestDataSourceDiscoveryAttribute.cs
@@ -1,17 +1,15 @@
 // Copyright (c) Microsoft Corporation. All rights reserved.
 // Licensed under the MIT license. See LICENSE file in the project root for full license information.
 
+using System.ComponentModel;
+
 namespace Microsoft.VisualStudio.TestTools.UnitTesting;
 
 /// <summary>
 /// Specifies how to discover <see cref="ITestDataSource"/> tests.
 /// </summary>
 [AttributeUsage(AttributeTargets.Assembly)]
-#if NET6_0_OR_GREATER
-[Obsolete("Attribute is obsolete and will be removed in v4, instead use 'TestDataSourceOptionsAttribute'.", DiagnosticId = "MSTESTOBS")]
-#else
-[Obsolete("Attribute is obsolete and will be removed in v4, instead use 'TestDataSourceOptionsAttribute'.")]
-#endif
+[EditorBrowsable(EditorBrowsableState.Never)]
 public class TestDataSourceDiscoveryAttribute : Attribute
 {
     /// <summary>
diff --git a/src/TestFramework/TestFramework/Attributes/DataSource/TestDataSourceDiscoveryOption.cs b/src/TestFramework/TestFramework/Attributes/DataSource/TestDataSourceDiscoveryOption.cs
index 25b9c9b32e..1259baf4a7 100644
--- a/src/TestFramework/TestFramework/Attributes/DataSource/TestDataSourceDiscoveryOption.cs
+++ b/src/TestFramework/TestFramework/Attributes/DataSource/TestDataSourceDiscoveryOption.cs
@@ -1,16 +1,14 @@
 // Copyright (c) Microsoft Corporation. All rights reserved.
 // Licensed under the MIT license. See LICENSE file in the project root for full license information.
 
+using System.ComponentModel;
+
 namespace Microsoft.VisualStudio.TestTools.UnitTesting;
 
 /// <summary>
 /// The supported discovery modes for <see cref="ITestDataSource"/> tests.
 /// </summary>
-#if NET6_0_OR_GREATER
-[Obsolete("Type is obsolete and will be removed in v4, instead use 'TestDataSourceUnfoldingStrategy'.", DiagnosticId = "MSTESTOBS")]
-#else
-[Obsolete("Type is obsolete and will be removed in v4, instead use 'TestDataSourceUnfoldingStrategy'.")]
-#endif
+[EditorBrowsable(EditorBrowsableState.Never)]
 public enum TestDataSourceDiscoveryOption
 {
     /// <summary>