CHANGES.md in twilio-ruby-4.12.1 vs CHANGES.md in twilio-ruby-4.13.0

@@ -1,13 +1,20 @@
 twilio-ruby changelog
 =====================
 
-Version 4.12.0
+Version 4.13.0
 --------------
 
+Released September 19, 2016:
+
+- Add VideoGrant.
+
+Version 4.12.1
+--------------
+
 Released September 1, 2016:
 
-- Add voice grant.
+- Add VoiceGrant.
 
 Version 4.11.1
 -------------
 
 Released February 12, 2016: