diff --git a/shadowsocks.sh b/shadowsocks.sh
index 54b6a20..398794a 100644
--- a/shadowsocks.sh
+++ b/shadowsocks.sh
@@ -223,10 +223,10 @@ pre_install(){
     char=`get_char`
     # Install necessary dependencies
     if check_sys packageManager yum; then
-        yum install -y python python-devel openssl openssl-devel curl wget unzip gcc automake autoconf make libtool
+        yum install -y python python-devel python-setuptools openssl openssl-devel curl wget unzip gcc automake autoconf make libtool
     elif check_sys packageManager apt; then
         apt-get -y update
-        apt-get -y install python python-dev openssl libssl-dev curl wget unzip gcc automake autoconf make libtool
+        apt-get -y install python python-dev python-setuptools openssl libssl-dev curl wget unzip gcc automake autoconf make libtool
     fi
     cd ${cur_dir}
 }