README.md in onfido-2.1.1 vs README.md in onfido-2.2.0

- old
+ new
@@ -5,10 +5,10 @@
 [![Gem Version](https://badge.fury.io/rb/onfido.svg)](http://badge.fury.io/rb/onfido)
 [![Build Status](https://travis-ci.org/onfido/onfido-ruby.svg?branch=master)](https://travis-ci.org/onfido/onfido-ruby)
 
 Documentation can be found at https://documentation.onfido.com
 
-This version uses Onfido API v3.2 and is compatible with Ruby 2.4 onwards. Refer to our [API versioning guide](https://developers.onfido.com/guide/api-versioning-policy#client-libraries) for details of which client library versions use which versions of the API.
+This version uses Onfido API v3.3 and is compatible with Ruby 2.4 onwards. Refer to our [API versioning guide](https://developers.onfido.com/guide/api-versioning-policy#client-libraries) for details of which client library versions use which versions of the API.
 
 ## Installation
 
 Add this line to your application's Gemfile:
 