diff --git a/README.md b/README.md
index 1bdcf6aba..1da9ea32b 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ migrate to the latest version.
 Add this line to your application's Gemfile:
 
 ```ruby
-gem 'google-api-client', '0.9'
+gem 'google-api-client', '~> 0.9'
 
 ```