diff --git a/README.md b/README.md
index d527cee..32c7b7f 100644
--- a/README.md
+++ b/README.md
@@ -148,7 +148,7 @@
 
 ### MySQL
 
-* [MySQL索引背后的数据结构及算法原理](http://www.cnblogs.com/leoo2sk/archive/2011/07/10/mysql-index.html)
+* [MySQL索引背后的数据结构及算法原理](http://blog.codinglabs.org/articles/theory-of-mysql-index.html)
 * [21分钟MySQL入门教程](http://www.cnblogs.com/mr-wid/archive/2013/05/09/3068229.html)
 
 ### 项目相关