diff --git a/CHANGELOG.md b/CHANGELOG.md
index fa76a054a..ef2cbacbe 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 ### Changed
 
 - Replaced Smithy with a native OpenAPI spec ([#189](https://github.com/opensearch-project/opensearch-api-specification/issues/189))
+- Refactored spec tester internals to improve reusability ([#302](https://github.com/opensearch-project/opensearch-api-specification/pull/302))
 
 ### Deprecated