CHANGELOG.md in csb-0.2.2 vs CHANGELOG.md in csb-0.2.3

- old
+ new

@@ -1,4 +1,8 @@
+## 0.2.3
+
+- Fix rack@2.2.x bug https://github.com/rack/rack/issues/1619
+
 ## 0.2.2
 
 - Update dependency
 
 ## 0.2.1