diff --git a/free-programming-books-zh.md b/free-programming-books-zh.md
index 4ac506308881e4d55cfb63923a699c268c10d430..1fb496e6f6ac9f9b24daf48a86bd063e16fd5871 100644
--- a/free-programming-books-zh.md
+++ b/free-programming-books-zh.md
@@ -635,7 +635,6 @@
 ### Ruby
 
 * [Rails 风格指南](https://github.com/JuanitoFatas/rails-style-guide/blob/master/README-zhCN.md)
-* [Ruby on Rails Tutorial 原书第 2 版](http://railstutorial-china.org)
 * [Ruby on Rails 实战圣经](https://ihower.tw/rails4/)
 * [Ruby on Rails 指南](http://guides.ruby-china.org)
 * [Ruby 风格指南](https://github.com/JuanitoFatas/ruby-style-guide/blob/master/README-zhCN.md)