diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7093b08..b491c10 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog], and this project adheres to [Semantic Versioning].
 
 ## [Unreleased]
+*Nothing yet*
+
+## [0.4.0] - 2021-10-18
+*Add new fail2ban config metrics*
 
 ### Added
 - (56730c8) feat: add new jail config metrics
@@ -65,3 +69,4 @@ The format is based on [Keep a Changelog], and this project adheres to [Semantic
 [0.1.0]: https://gitlab.com/hectorjsmith/fail2ban-prometheus-exporter/compare/0.0.0...0.1.0
 [0.2.0]: https://gitlab.com/hectorjsmith/fail2ban-prometheus-exporter/compare/0.1.0...0.2.0
 [0.3.0]: https://gitlab.com/hectorjsmith/fail2ban-prometheus-exporter/compare/0.2.0...0.3.0
+[0.4.0]: https://gitlab.com/hectorjsmith/fail2ban-prometheus-exporter/compare/0.3.0...0.4.0