diff --git a/CHANGELOG.md b/CHANGELOG.md
index b0a0055d..753a267a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,11 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 # [unreleased]
 
+## Fixes
+
+- Bugfix for RM3100 MGM sensors. Z value was previously calculated
+  with bytes of the X value.
+
 # [v6.0.0]
 
 ## Fixes