diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0fbba82..60f0cd6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,13 @@ 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).
 
 ## [Unreleased](https://git.d3data.de/D3Public/MyModule/compare/3.0.1.0...rel_3.x)
+### Added
+- improve extendability for OAuth support
+### Changed
+- use SMTP debug instead of iDebug = 6
+- use a non RFC 2606 blocked test mail address
+### Fixed
+- clean output buffer in case of thrown exception
 
 ## [3.0.1.0](https://git.d3data.de/D3Public/MailConfigChecker/compare/3.0.0.0...3.0.1.0) - 2024-07-10
 ### Added