diff --git a/shadowsocks-all.sh b/shadowsocks-all.sh
index 561fb91..57bb073 100644
--- a/shadowsocks-all.sh
+++ b/shadowsocks-all.sh
@@ -123,6 +123,7 @@ auth_sha1_v4_compatible
 auth_aes128_md5
 auth_aes128_sha1
 auth_chain_a
+auth_chain_b
 )
 # obfs
 obfs=(