diff --git a/README.md b/README.md
index c045730..06a7399 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,7 @@ gem install country_select
 Or put the following in your Gemfile
 
 ```ruby
-gem 'country_select', '~> 6.0'
+gem 'country_select', '~> 8.0'
 ```
 
 ## Usage