diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5ce11dabb6e9c..da92375d41b94 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -52,6 +52,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Painless: ensure type "UnmodifiableMap" for params ([#13885](https://github.com/opensearch-project/OpenSearch/pull/13885))
 - Pass parent filter to inner hit query ([#13903](https://github.com/opensearch-project/OpenSearch/pull/13903))
 - Fix NPE on restore searchable snapshot ([#13911](https://github.com/opensearch-project/OpenSearch/pull/13911))
+- Fix allowUnmappedFields, mapUnmappedFieldAsString settings are not applied when parsing certain types of query string query ([#13957](https://github.com/opensearch-project/OpenSearch/pull/13957))
 
 ### Security