diff --git a/src/Servers/Kestrel/test/InMemory.FunctionalTests/RequestTests.cs b/src/Servers/Kestrel/test/InMemory.FunctionalTests/RequestTests.cs
index 178a464b44..d77500612c 100644
--- a/src/Servers/Kestrel/test/InMemory.FunctionalTests/RequestTests.cs
+++ b/src/Servers/Kestrel/test/InMemory.FunctionalTests/RequestTests.cs
@@ -559,6 +559,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.InMemory.FunctionalTests
         }
 
         [Fact]
+        [QuarantinedTest]
         public async Task TraceIdentifierIsUnique()
         {
             const int identifierLength = 22;