update changelog

CHANGELOG.md

@@ -13,6 +13,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [v0.4.1] - 2024-03-21
+
+### Changed
+- Added PyYAML as dependency which was missing in `v0.4.0`
+
+
 ## [v0.4.0] - 2024-03-20
 
 ### Changed