diff --git a/README.md b/README.md
index 71c4c26..09a19c2 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,8 @@
 # cellar
 ### bottle management tool for WINE connoisseurs
 
+(notice: https://github.com/lavacano201014/cellar is a mirror. The upstream repository is at [vcs.lavacano.net/cellar.git](http://vcs.lavacano.net/?p=cellar.git), and bugs are officially tracked at [mantis.lavacano.net](http://mantis.lavacano.net))
+
 ## Installation
 
     $ mkdir build && cd build