diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1c48af45..2c76850b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+- PHP8.1 compatibility [#713](https://github.com/smarty-php/smarty/pull/713)
+
 ## [4.0.4] - 2022-01-18
 
 ### Fixed