CHANGELOG.md in dorsale-3.11.0 vs CHANGELOG.md in dorsale-3.12.0

@@ -1,8 +1,11 @@
 # Changelog
 
 ## Next version
 
+## 3.12.0
+- Change attachment observers
+
 ## 3.11.0
 - Various updates
 - Remove bh gem dependency
 
 ## 3.10.3