diff --git a/CHANGELOG.md b/CHANGELOG.md
index 394f445..238121c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ### Changed
 
 - Stairs+ are now displayed in the creative inventory by default.
+- Localization files now use the gettext `.po` format.
 - Updated intllib support to avoid using deprecated functions.
 
 ### Fixed