diff --git a/README.md b/README.md
index 2c26a6c..9c2a3cd 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,3 @@
 # JudgeServer
 
-[Document](http://docs.onlinejudge.me/)
+[Document](http://opensource.qduoj.com/)