README.md in mautic-3.0.0 vs README.md in mautic-3.1.0

@@ -2,16 +2,17 @@
 [![Maintainability](https://api.codeclimate.com/v1/badges/c8cd605b5e021fb841d1/maintainability)](https://codeclimate.com/github/luk4s/mautic-rails/maintainability)
 [![Test Coverage](https://api.codeclimate.com/v1/badges/c8cd605b5e021fb841d1/test_coverage)](https://codeclimate.com/github/luk4s/mautic-rails/test_coverage)
  
 RoR helper / wrapper for Mautic API and forms
 
-*Rails 4.2.8+, 5.1+ compatible*
+*Rails 6.0+ compatible*
+*Ruby 3.1+ compatible*
 
 ## Installation
 Add this line to your application's Gemfile:
 
 ```ruby
-gem 'mautic', '~> 2.3'
+gem "mautic", "~> 3.1"
 ```
 
 And then execute:
 ```bash
 $ bundle