diff --git a/CHANGELOG.md b/CHANGELOG.md
index ceba317..d0a4546 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,11 @@ 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 badly attempts [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [3.1.2] - 2024-01-04
+
+### Added
+- Add forgotten code file file for medical overlay
+
 ## [3.1.1] - 2024-01-04
 
 ### Changed