diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5c89dd7b53374..2e84260493bf7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -61,6 +61,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Fix stale cluster state custom file deletion ([#16670](https://github.com/opensearch-project/OpenSearch/pull/16670))
 - [Tiered Caching] Fix bug in cache stats API ([#16560](https://github.com/opensearch-project/OpenSearch/pull/16560))
 - Bound the size of cache in deprecation logger ([16702](https://github.com/opensearch-project/OpenSearch/issues/16702))
+- Fix visit of inner query for FunctionScoreQueryBuilder ([#15404](https://github.com/opensearch-project/OpenSearch/pull/15404))
 
 ### Security