diff --git a/CHANGELOG.md b/CHANGELOG.md
index e652af2b5..54b3f9f96 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,6 +20,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - Adds govulncheck to check for go vulnerablities ([#405](https://github.com/opensearch-project/opensearch-go/pull/405))
 - Adds opensearchapi with new client and function structure ([#421](https://github.com/opensearch-project/opensearch-go/pull/421))
 - Adds integration tests for all opensearchapi functions ([#421](https://github.com/opensearch-project/opensearch-go/pull/421))
+- Adds guide on making raw JSON REST requests ([#399](https://github.com/opensearch-project/opensearch-go/pull/399))
 
 ### Changed
 
@@ -50,4 +51,4 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 ### Security
 
-[Unreleased]: https://github.com/opensearch-project/opensearch-go/compare/v2.3.0...HEAD
\ No newline at end of file
+[Unreleased]: https://github.com/opensearch-project/opensearch-go/compare/v2.3.0...HEAD