diff --git a/ci/tsan b/ci/tsan
index bc9867f5b..552e0accf 100644
--- a/ci/tsan
+++ b/ci/tsan
@@ -3,3 +3,4 @@
 # TSAN does not understand fences and `Arc::drop` is implemented using a fence.
 # This causes many false positives.
 race:Arc*drop
+race:arc*Weak*drop