diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4405439..934a71e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [unreleased]
 
+## [0.9.0] - 2024-07-01
+
 - fix exception in MODBUS timeout callback
 
 ## [0.9.0-RC1] - 2024-06-29