diff --git a/rpi-shadowsocks/2.9.1/README.md b/rpi-shadowsocks/2.9.1/README.md
index 0201562..3cbf131 100644
--- a/rpi-shadowsocks/2.9.1/README.md
+++ b/rpi-shadowsocks/2.9.1/README.md
@@ -6,6 +6,7 @@ docker run \
 -d \
 --restart always \
 --publish 1080:1080 \
+--publish 1080:1080/udp \
 --name shadowsocks \
 newnius/rpi-shadowsocks \
 ssserver -p 1080 -k PASSWORD -m aes-256-cfb
@@ -17,6 +18,7 @@ docker run \
 -d \
 --restart always \
 --publish 1081:1081 \
+--publish 1081:1081/udp \
 --name shadowsocks \
 newnius/rpi-shadowsocks \
 sslocal -s SERVER_IP -p 1080 -l 1081 -k PASSWORD -m aes-256-cfb