diff --git a/CHANGELOG.md b/CHANGELOG.md
index b668b75..d0df238 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -23,7 +23,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 # Releases
 <!-- @LatestFirst -->
 
-## [0.4.0] - ???
+## [0.4.0] - 18/11/23
 - UMA-25: Add single player option to log in
 - UMA-27: In standard mode, play computer's move after user has placed
 - UMA-28: In ultimate mode, play computer's move after user has placed
diff --git a/src/version/version.py b/src/version/version.py
index 3a79c45..108f940 100644
--- a/src/version/version.py
+++ b/src/version/version.py
@@ -1 +1 @@
-__version__ = "0.3.4-SNAPSHOT"
\ No newline at end of file
+__version__ = "0.4.0-SNAPSHOT"
\ No newline at end of file