diff --git a/Changelog.md b/Changelog.md
index 7c0c86a51..b44159785 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,5 +1,8 @@
 ### 0.4.13 (unreleased)
 
+Bugfixes:
+ * Code Generator: Correctly unregister modifier variables.
+
 ### 0.4.12 (2017-07-03)
 
 Features: