diff --git a/etc/tsan.denylist b/etc/tsan.denylist
index 7cdefe5e595..12dc9a17042 100644
--- a/etc/tsan.denylist
+++ b/etc/tsan.denylist
@@ -1,4 +1,4 @@
 # WT is known to use a non-standard thread model that is incompatible with TSAN
 # and causes false positives.
 src:src/third_party/wiredtiger/*
-
+src:src/third_party/zstandard/*