diff --git a/RELEASE-NOTES b/RELEASE-NOTES
index e9d90d563d..80a53b175d 100644
--- a/RELEASE-NOTES
+++ b/RELEASE-NOTES
@@ -43,6 +43,7 @@ This release includes the following bugfixes:
  o fragment part of URLs are no longer sent to the server
  o progress callback called repeatedly with c-ares for resolving
  o OpenSSL session id ref count leak
+ o progress callback called repeatedly during slow connects
 
 This release includes the following known bugs: