CHANGES.md in twilio-ruby-5.6.3 vs CHANGES.md in twilio-ruby-5.6.4

@@ -1,7 +1,25 @@
 twilio-ruby changelog
 =====================
 
+[2018-02-23] Version 5.6.4
+---------------------------
+**Library**
+- PR #385 - Fix ClientCapability appParams
+
+**Api**
+- Add `trim` param to Outbound Calls API
+
+**Lookups**
+- Add support for `fraud` lookup type
+
+**Numbers**
+- Initial Release
+
+**Video**
+- [composer] Add `SEQUENCE` value to available layouts, and `trim` and `reuse` params.
+
+
 [2018-02-09] Version 5.6.3
 ---------------------------
 **Api**
 - Add `AnnounceUrl` and `AnnounceMethod` params for conference announce