CHANGELOG.md in rubocop-extension-generator-0.5.0 vs CHANGELOG.md in rubocop-extension-generator-0.5.1

@@ -1,6 +1,10 @@
 # master (unreleased)
 
+## v0.5.1
+
+* [#17](https://github.com/rubocop/rubocop-extension-generator/pull/17): Add missing `require bundler`.
+
 ## v0.5.0
 
 * [#16](https://github.com/rubocop/rubocop-extension-generator/pull/16): Fix CLI error caused by bundler newer than v2.3.9.
 
 ## v0.4.0