diff --git a/README.md b/README.md
index 447f0979cc9189c142bf6a40214a14d1a384308c..5048ee1c6e573a27521f12595a70a7300c881021 100644
--- a/README.md
+++ b/README.md
@@ -678,7 +678,8 @@
 
 * [The Swift Programming Language 中文版](http://numbbbbb.github.io/the-swift-programming-language-in-chinese/)
 * [Swift 语言指南](http://dev.swiftguide.cn)
-* [Stanford 公开课，Developing iOS 8 Apps with Swift 字幕翻译文件](https://github.com/x140yu/Developing_iOS_8_Apps_With_Swift)
+* [Stanford 公开课，Developing iOS 8 Apps with Swift 字幕翻译文件](https://github.com/x140yu/Developing_iOS_8_Apps_With_Swift)   
+* [C4iOS - COSMOS](http://c4ios.swift.gg)   
 
 ### 读书笔记及其它