diff --git a/CHANGELOG.md b/CHANGELOG.md
index 046048c..2b34cc1 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/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased] [0.4.1] - xxxx-xx-xx
+
+### Added
+
+- 'Invalid' appearance for select-2 controls, upon bad form submission
+
 ## [Unreleased] [0.4.0] - xxxx-xx-xx [BREAKING]
 
 ### Added