CHANGES.md in twilio-ruby-4.0.0 vs CHANGES.md in twilio-ruby-4.0.1

@@ -1,7 +1,14 @@
 twilio-ruby changelog
 =====================
 
+Version 4.0.1
+-------------
+
+Released May 6, 2015
+
+- Add support for the new Pricing API
+
 Version 4.0.0
 -------------
 
 Released April 16, 2015