diff --git a/finagle-http/src/test/scala/BUILD b/finagle-http/src/test/scala/BUILD
index 9711d7e2adf..a8c04e111c4 100644
--- a/finagle-http/src/test/scala/BUILD
+++ b/finagle-http/src/test/scala/BUILD
@@ -4,6 +4,7 @@ junit_tests(
     platform = "java8",
     tags = [
         "bazel-compatible",
+        "known-to-fail-jira:CSL-12408",
     ],
     dependencies = [
         "3rdparty/jvm/com/google/code/findbugs:jsr305",