diff --git a/test/sanitizer_suppressions/tsan b/test/sanitizer_suppressions/tsan
index 5a790b72f2..82c6885bc4 100644
--- a/test/sanitizer_suppressions/tsan
+++ b/test/sanitizer_suppressions/tsan
@@ -25,6 +25,7 @@ race:src/qt/test/*
 deadlock:src/qt/test/*
 
 # External libraries
+# https://github.com/bitcoin/bitcoin/pull/27658#issuecomment-1547639621
 deadlock:libdb
 race:libzmq