diff --git a/CHANGELOG.md b/CHANGELOG.md
index 183d4ca..8945620 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,7 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
-## Unreleased
+## 0.6.6 - 2017-11-19
 ### Changed
 - Deprecated `Utility::encryptPassword()`
 - Support Symfony 4.