CHANGELOG.md in axie-ruby-0.2.0 vs CHANGELOG.md in axie-ruby-0.2.1

@@ -1,6 +1,9 @@
 ## [Unreleased]
 
+## [0.2.1] - 2021-09-06
+- Improve Readme
+
 ## [0.2.0] - 2021-09-06
 - Change name to axie-ruby
 
 ## [0.1.0] - 2021-09-06