diff --git a/test/core/surface/BUILD b/test/core/surface/BUILD
index 58087f518d7..37a371dc4e8 100644
--- a/test/core/surface/BUILD
+++ b/test/core/surface/BUILD
@@ -55,7 +55,7 @@ grpc_cc_test(
 grpc_cc_test(
     name = "completion_queue_threading_test",
     srcs = ["completion_queue_threading_test.cc"],
-    flaky = True,
+    flaky = True,  # TODO(b/153064668)
     language = "C++",
     deps = [
         "//:gpr",