diff --git a/src/OpenApi/test/Microsoft.AspNetCore.OpenApi.Tests/Services/OpenApiSchemaService/OpenApiSchemaService.ResponseSchemas.cs b/src/OpenApi/test/Microsoft.AspNetCore.OpenApi.Tests/Services/OpenApiSchemaService/OpenApiSchemaService.ResponseSchemas.cs
index 7cf014d29290..c7b7e3656b95 100644
--- a/src/OpenApi/test/Microsoft.AspNetCore.OpenApi.Tests/Services/OpenApiSchemaService/OpenApiSchemaService.ResponseSchemas.cs
+++ b/src/OpenApi/test/Microsoft.AspNetCore.OpenApi.Tests/Services/OpenApiSchemaService/OpenApiSchemaService.ResponseSchemas.cs
@@ -8,6 +8,7 @@
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Http.HttpResults;
+using Microsoft.AspNetCore.InternalTesting;
 using Microsoft.AspNetCore.Mvc;
 
 public partial class OpenApiSchemaServiceTests : OpenApiDocumentServiceTestBase
@@ -1080,6 +1081,7 @@ await VerifyOpenApiDocument(builder, document =>
     }
 
     [Fact]
+    [QuarantinedTest("https://github.com/dotnet/aspnetcore/issues/66147")]
     public async Task GetOpenApiResponse_HandlesFileContentHttpResultTypeResponse()
     {
         // Arrange
@@ -1103,6 +1105,7 @@ await VerifyOpenApiDocument(builder, document =>
     }
 
     [Fact]
+    [QuarantinedTest("https://github.com/dotnet/aspnetcore/issues/66147")]
     public async Task GetOpenApiResponse_HandlesFileStreamHttpResultTypeResponse()
     {
         // Arrange