diff --git a/src/Middleware/CORS/test/FunctionalTests/CorsMiddlewareFunctionalTest.cs b/src/Middleware/CORS/test/FunctionalTests/CorsMiddlewareFunctionalTest.cs
index 07667df68a..937c016348 100644
--- a/src/Middleware/CORS/test/FunctionalTests/CorsMiddlewareFunctionalTest.cs
+++ b/src/Middleware/CORS/test/FunctionalTests/CorsMiddlewareFunctionalTest.cs
@@ -28,6 +28,7 @@ namespace FunctionalTests
 
         public ITestOutputHelper Output { get; }
 
+        [Flaky("https://github.com/aspnet/aspnetcore-internal/issues/2865", FlakyOn.Helix.All)]
         [ConditionalTheory]
         [OSSkipCondition(OperatingSystems.MacOSX, SkipReason = "Disabling this test on OSX until we have a resolution for https://github.com/aspnet/AspNetCore-Internal/issues/1619")]
         [InlineData("Startup")]