diff --git a/CHANGELOG.md b/CHANGELOG.md
index b6b4e7f94..1a56322b1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,7 +14,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 ### Deprecated
 ### Removed
 ### Fixed
-- Make optional fields optional in `MappingGenericProperty`
+- Make optional fields optional in `MappingGenericProperty` ([708](https://github.com/opensearch-project/opensearch-js/pull/708))
 ### Security
 
 ## [2.5.0]