diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7d81330..9f77a7d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,8 @@ 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]
+
+## [4.0.0] - 2019-09-20
 ### Added
  - Additional logger config in app settings
  - New helper function to remove line endings