CHANGES.md in twilio-ruby-5.3.1 vs CHANGES.md in twilio-ruby-5.4.0

@@ -1,7 +1,24 @@
 twilio-ruby changelog
 =====================
 
+[2017-10-13] Version 5.4.0
+---------------------------
+**Api**
+- Add `smart_encoded` param for Messages
+- Add `identity_sid` param to IncomingPhoneNumbers create and update
+
+**Preview**
+- Make 'address_sid' and 'email' optional fields when creating a HostedNumberOrder
+- Add AuthorizationDocuments preview API.
+
+**Proxy**
+- Initial Release
+
+**Wireless**
+- Added `ip_address` to sim resource
+
+
 [2017-10-06] Version 5.3.1
 ---------------------------
 **Preview**
 - Add `acc_security` (authy-phone-verification) initial api-definitions