diff --git a/backend/kolla/prepare.sh b/backend/kolla/prepare.sh
index 56f21a6e..d35e58b3 100755
--- a/backend/kolla/prepare.sh
+++ b/backend/kolla/prepare.sh
@@ -17,8 +17,10 @@ fi
 
 echo "nameserver 8.8.8.8" > /etc/resolv.conf
 daisy_management_ip=$1
-yum -y install epel-release centos-release-openstack-pike
-yum clean all
+yum -y install epel-release
+yum -y install centos-release-openstack-queens
+yum -y upgrade
+
 #curl -sSL https://get.docker.io | bash
 yum remove -y docker-engine
 yum install -y $prepare_dir/docker-engine.rpm