CHANGELOG.md in rmagick-2.15.1 vs CHANGELOG.md in rmagick-2.15.2

@@ -1,9 +1,13 @@
 # Change Log
 
 All notable changes to this project are documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
+## RMagick 2.15.2
+
+- GitHub repository moved back to github.com/rmagick/rmagick - @wurde, @vassilevsky
+
 ## RMagick 2.15.1
 
 - Fix loop in linked list in `ImageList` methods => they no longer hang - @u338steven
 
 ## RMagick 2.15.0