diff --git a/CHANGELOG.md b/CHANGELOG.md
index 44a90213..cc544cce 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,7 @@
 # Changelog
 All notable changes to this project will be documented in this file.
 
-## 2.400 — Unreleased
+## [2.400] — December 17, 2023
 
 ## Added
 
@@ -160,3 +160,5 @@ IBM Plex Mono version: 3.000
 [2.200]: https://github.com/mishamyrt/Lilex/releases/tag/2.200
 
 [2.300]: https://github.com/mishamyrt/Lilex/releases/tag/2.300
+
+[2.400]: https://github.com/mishamyrt/Lilex/releases/tag/2.400