Update suppressions file
diff --git a/tools/tsan_suppressions.txt b/tools/tsan_suppressions.txt
index 23d57f9..3503c50 100644
--- a/tools/tsan_suppressions.txt
+++ b/tools/tsan_suppressions.txt
@@ -1,2 +1,3 @@
 # OPENSSL_cleanse does racy access to a global
 race:OPENSSL_cleanse
+race:cleanse_ctr