diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7a04eb5..7474a35 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](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [3.1.1] 2024-07-26
+
+- Added: 'Shape Change Ability' power effect
+
 ## [3.1.0] 2024-07-14
 
 - v12 compatibility