CHANGES.md in twilio-ruby-5.31.3 vs CHANGES.md in twilio-ruby-5.31.4

@@ -1,7 +1,29 @@
 twilio-ruby changelog
 =====================
 
+[2020-02-05] Version 5.31.4
+---------------------------
+**Api**
+- Making content retention and address retention public
+- Update `status` enum for Messages to include 'partially_delivered'
+
+**Authy**
+- Added support for push factors
+
+**Autopilot**
+- Add one new property in Query i.e dialogue_sid
+
+**Verify**
+- Add `SendCodeAttempts` to create verification response.
+
+**Video**
+- Clarification in composition creation documentation: one source is mandatory, either `audio_sources` or `video_layout`, but on of them has to be provided
+
+**Twiml**
+- Add Polly Neural voices.
+
+
 [2020-01-22] Version 5.31.3
 ---------------------------
 **Library - Docs**
 - [PR #492](https://github.com/twilio/twilio-ruby/pull/492): baseline all the templated markdown docs. Thanks to [@childish-sambino](https://github.com/childish-sambino)!