diff --git a/README.md b/README.md
index c3be8ce..a71813d 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ the user `openwrt` was created. The buildroot can be found in
 
 To run a shell in the buildroot, execute the following command:
 ```sh
-docker run -t -i noonien/openwrt-buildroot sudo -iu openwrt bash
+docker run -t -i noonien/openwrt-buildroot:12.09 sudo -iu openwrt bash
 ```
 
 More information on how to use this buildroot can be found on the