CHANGELOG.md in rubocop-rake-0.4.0 vs CHANGELOG.md in rubocop-rake-0.5.0

- old
+ new

@@ -10,10 +10,16 @@
 
 ### Changes
 
 -->
 
+## 0.5.0 (2019-10-31)
+
+### New features
+
+* [#14](https://github.com/rubocop-hq/rubocop-rake/issues/14): Add Rake/DuplicateNamespace cop. ([@jaruuuu][])
+
 ## 0.4.0 (2019-10-13)
 
 ### New features
 
 * [#13](https://github.com/rubocop-hq/rubocop-rake/issues/13): Add Rake/DuplicateTask cop. ([@pocke][])
@@ -46,5 +52,6 @@
 
 * The first release!
 * Add `Rake/Desc`. ([@pocke][])
 
 [@pocke]: https://github.com/pocke
+[@jaruuuu]: https://github.com/jaruuuu