diff --git a/README.md b/README.md
index 7c489f1..d700d77 100644
--- a/README.md
+++ b/README.md
@@ -3,14 +3,14 @@
 Infinite horizontal scrolling using `UICollectionView`
 
 [![CocoaPods Compatible](http://img.shields.io/cocoapods/v/InfiniteCollectionView.svg?style=flat)](http://cocoadocs.org/docsets/InfiniteCollectionView)
-[![Swift 2.0](https://img.shields.io/badge/Swift-2.0-orange.svg?style=flat)](https://developer.apple.com/swift/)
+[![Swift 2.2](https://img.shields.io/badge/Swift-2.2-orange.svg?style=flat)](https://developer.apple.com/swift/)
 
 <img src="https://github.com/hryk224/InfiniteCollectionView/wiki/images/sample1.gif" width="320" >
 <img src="https://github.com/hryk224/InfiniteCollectionView/wiki/images/sample2.gif" width="320" >
 
 ## Requirements
 - iOS 8.0+
-- Swift 2.0+
+- Swift 2.2+
 - ARC
 
 ## install