README.md in alipay-0.4.0 vs README.md in alipay-0.4.1

@@ -14,10 +14,10 @@
 ## Installation
 
 Add this line to your application's Gemfile:
 
 ```ruby
-gem 'alipay', '~> 0.1.0'
+gem 'alipay', '~> 0.4.1'
 ```
 
 or development version
 
 ```ruby