diff --git a/CHANGELOG.md b/CHANGELOG.md
index 765be81..96de87c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,12 @@ 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).
 
+## [0.1.15] - 2023-04-12
+
+### Fixed
+
+- Forgot a `total_pack_energy`. (#22)
+
 ## [0.1.14] - 2023-04-12
 
 ### Changed