diff --git a/src/Servers/Kestrel/test/InMemory.FunctionalTests/Http2/Http2TimeoutTests.cs b/src/Servers/Kestrel/test/InMemory.FunctionalTests/Http2/Http2TimeoutTests.cs
index de256d5304..e9af94a606 100644
--- a/src/Servers/Kestrel/test/InMemory.FunctionalTests/Http2/Http2TimeoutTests.cs
+++ b/src/Servers/Kestrel/test/InMemory.FunctionalTests/Http2/Http2TimeoutTests.cs
@@ -371,6 +371,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
         }
 
         [Fact]
+        [QuarantinedTest]
         public async Task DATA_Sent_TooSlowlyDueToFlowControlOnSmallWrite_AbortsConnectionAfterGracePeriod()
         {
             var mockSystemClock = _serviceContext.MockSystemClock;