diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6700ffc..f36b10c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
-## [unreleased]
+## [0.4.0] - - 2016-09-03
 
 ### Added
 - debug flag `-d`