diff --git a/CHANGELOG.md b/CHANGELOG.md
index b38fd86b..eeec8f07 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 async support for helpers that are merged from opensearch-dsl-py ([#329](https://github.com/opensearch-project/opensearch-py/pull/329))
+- Added document lifecycle guide ([#364](https://github.com/opensearch-project/opensearch-py/pull/364))
 ### Changed
 - Upgrading pytest-asyncio to latest version - 0.21.0 ([#339](https://github.com/opensearch-project/opensearch-py/pull/339))
 ### Deprecated