CHANGELOG.md in rails_state_machine-2.0.0 vs CHANGELOG.md in rails_state_machine-2.1.0

@@ -8,9 +8,15 @@
 ### Compatible changes
 
 ### Breaking changes
 
 
+## 2.1.0 2021-03-30
+
+### Compatible changes
+
+- Added support for Ruby 3.0.
+
 ## 2.0.0 2019-09-30
 
 ### Compatible changes
 
 - Added: State machine can now use an attribute other than `state` to represent the machine's state.