diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7a626d9..8858b8f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,7 @@ 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).
 
-## [4.0.0] - TBD
+## [4.0.0] - 2022-02-01
 ### Added
 - will now use common layout Widgets like Align, Padding, and Center instead of Pinned when appropriate
 - general improvements to output simpler, less verbose code when possible