CHANGELOG.md in pesapal-1.5.1 vs CHANGELOG.md in pesapal-1.5.2

@@ -1,7 +1,12 @@
 Changelog
 =========
 
+v1.5.2
+------
+
+* Update Gemfile.lock
+
 v1.5.1
 ------
 
 * Fix bugs, unable to proceed without YAML file
 * Require htmlentities