diff --git a/CHANGELOG.md b/CHANGELOG.md
index d22dd4b94..babeec7c5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 ## [Unreleased]
 ### Added
 - Added basic support for HTTP compression when writing to OpenSearch ([#451](https://github.com/opensearch-project/opensearch-hadoop/pull/451))
+- Added support for k-nn vectors ([#424](https://github.com/opensearch-project/opensearch-hadoop/pull/TBD))
 
 ### Changed
 
@@ -115,4 +116,4 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 [1.2.0]: https://github.com/opensearch-project/opensearch-hadoop/compare/v1.1.0...v1.2.0
 [1.1.0]: https://github.com/opensearch-project/opensearch-hadoop/compare/v1.0.1...v1.1.0
 [1.0.1]: https://github.com/opensearch-project/opensearch-hadoop/compare/v1.0.0...v1.0.1
-[1.0.0]: https://github.com/opensearch-project/opensearch-hadoop/compare/v7.13.4...v1.0.0
\ No newline at end of file
+[1.0.0]: https://github.com/opensearch-project/opensearch-hadoop/compare/v7.13.4...v1.0.0