diff --git a/CHANGELOG.md b/CHANGELOG.md
index cab3593..8d6803e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,19 @@
 
 This file is used to list changes made in each version of the postfix cookbook.
 
+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
+
+### Changed
+
+- Sous Chefs Adoption
+
+### Added
+
+- Standardise files with files in sous-chefs/repo-management
+
 ## 5.3.1 (2018-07-24)
 
 - Fixed sbin issue with Chef13