README.md in second_level_cache-2.2.2 vs README.md in second_level_cache-2.2.3

@@ -17,10 +17,10 @@
 In your gem file:
 
 ActiveRecord 5:
 
 ```ruby
-gem 'second_level_cache', '~> 2.2.0'
+gem 'second_level_cache', '~> 2.2.3'
 ```
 
 For ActiveRecord 4:
 
 ```ruby