diff --git a/src/Servers/Kestrel/test/InMemory.FunctionalTests/Http2/Http2ConnectionTests.cs b/src/Servers/Kestrel/test/InMemory.FunctionalTests/Http2/Http2ConnectionTests.cs
index 1df812999841..c578c5e10ae6 100644
--- a/src/Servers/Kestrel/test/InMemory.FunctionalTests/Http2/Http2ConnectionTests.cs
+++ b/src/Servers/Kestrel/test/InMemory.FunctionalTests/Http2/Http2ConnectionTests.cs
@@ -361,6 +361,7 @@ public async Task StreamPool_SingleStream_ReturnedToPool()
     }
 
     [Fact]
+    [QuarantinedTest("https://github.com/dotnet/aspnetcore/issues/39477")]
     public async Task StreamPool_MultipleStreamsConcurrent_StreamsReturnedToPool()
     {
         await InitializeConnectionAsync(_echoApplication);