Fixed release version in changelog.

dekobon · dekobon · commit b1b5e8870f47 · 2016-10-10T20:54:33.000+09:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -2,7 +2,7 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
-## [2.2.0] - 2016-10-10
+## [2.2.1] - 2016-10-10
 ### Changed
  - Upgraded Apache HTTP Client.
  - Upgraded Google HTTP Client.
