diff --git a/Gemfile b/Gemfile
index f3ca387..315c4c2 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,5 +1,5 @@
-#source 'http://rubygems.org'
-source 'https://mirrors.tuna.tsinghua.edu.cn/rubygems/'
+source 'http://rubygems.org'
+#source 'https://mirrors.tuna.tsinghua.edu.cn/rubygems/'
 
 gem 'rails',                   '4.2.11'