diff --git a/CHANGELOG.md b/CHANGELOG.md
index ff6296e..04f9c23 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,8 +4,10 @@ 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/)
 
-## [Unreleased]
+## [0.3.1]
+
 ### Fixed
+
 - Axios version to `0.18.1` due the CVE-2019-10742
 - Fix the `subject` attribute unmarshal error: issue
 [#32](https://github.com/cloudevents/sdk-javascript/issues/32)