diff --git a/poem-openapi/CHANGELOG.md b/poem-openapi/CHANGELOG.md
index 5ee723b148..bb88634145 100644
--- a/poem-openapi/CHANGELOG.md
+++ b/poem-openapi/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] 2023-01-06
+# [4.0.0] 2024-01-06
 
 - upgrade to `hyper1`
 - added documetation on how to merge API specs [#716](https://github.com/poem-web/poem/pull/716)