diff --git a/CHANGELOG.md b/CHANGELOG.md
index d60a3cd89..e89d61af0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,11 @@
 All notable changes to this project will be documented in this file.
 I will do my best to guarantee that this project adheres to [Semantic Versioning](http://semver.org/) after 1.0.0, but please do read change log before updating.
 
+## 0.12.7
+
+### Fixed
+- Make sure modification accesses are exclusive. Latest compiler (or swift runtime) enforces that.
+
 ## 0.12.6
 
 ### Fixed