diff --git a/src/libraries/System.Net.Http/tests/FunctionalTests/HttpClientHandlerTest.Http3.cs b/src/libraries/System.Net.Http/tests/FunctionalTests/HttpClientHandlerTest.Http3.cs
index 22d0370ef10fc..3085491f3305c 100644
--- a/src/libraries/System.Net.Http/tests/FunctionalTests/HttpClientHandlerTest.Http3.cs
+++ b/src/libraries/System.Net.Http/tests/FunctionalTests/HttpClientHandlerTest.Http3.cs
@@ -545,6 +545,7 @@ public async Task ResponseCancellation_ServerReceivesCancellation(CancellationTy
         }
 
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/56265")]
         public async Task ResponseCancellation_BothCancellationTokenAndDispose_Success()
         {
             if (UseQuicImplementationProvider != QuicImplementationProviders.MsQuic)