diff --git a/CHANGELOG.md b/CHANGELOG.md
index 75cb3166a63..9776e3cbe93 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,10 @@
 
 * **metrics:** fix empty metric warning filter ([#3660](https://github.com/aws-powertools/powertools-lambda-python/issues/3660))
 
+## Features
+
+* **event_handler:** add support for multiValueQueryStringParameters in OpenAPI schema ([#3667](https://github.com/aws-powertools/powertools-lambda-python/issues/3667))
+
 ## Maintenance
 
 * **deps:** bump pydantic from 1.10.13 to 1.10.14 ([#3655](https://github.com/aws-powertools/powertools-lambda-python/issues/3655))