diff --git a/free-programming-books-zh.md b/free-programming-books-zh.md
index cef90d100542e4a42c5c0f0c86eed80bcc3324da..57cc109a07b90e627d6690c0abc45f9a4804ad70 100644
--- a/free-programming-books-zh.md
+++ b/free-programming-books-zh.md
@@ -216,6 +216,7 @@
 
 ### 正则表达式
 
+* [正则表达式-菜鸟教程](http://www.runoob.com/regexp/regexp-tutorial.html)
 * [正则表达式30分钟入门教程](http://deerchao.net/tutorials/regex/regex.htm)