diff --git a/test/sanitizer_suppressions/tsan b/test/sanitizer_suppressions/tsan
index 77e302f994..c94c9f8504 100644
--- a/test/sanitizer_suppressions/tsan
+++ b/test/sanitizer_suppressions/tsan
@@ -37,3 +37,6 @@ race:CZMQAbstractPublishNotifier::SendZmqMessage
 
 # https://github.com/bitcoin/bitcoin/pull/20218, https://github.com/bitcoin/bitcoin/pull/20745
 race:epoll_ctl
+
+# https://github.com/bitcoin/bitcoin/issues/23366
+race:std::__1::ios_base::width