diff --git a/CHANGELOG.md b/CHANGELOG.md
index 799c88b..168259b 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] - 2022-08-18
+
 ### Added
 
 - Unit tests for the `ecs.py` module.
diff --git a/VERSION b/VERSION
index a3df0a6..ac39a10 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.8.0
+0.9.0