diff --git a/cluster/k8s1.6/bootstrap_centos.sh b/cluster/k8s1.6/bootstrap_centos.sh
index 829f73f..9ae5dd9 100755
--- a/cluster/k8s1.6/bootstrap_centos.sh
+++ b/cluster/k8s1.6/bootstrap_centos.sh
@@ -18,7 +18,7 @@ EOF
 
 setenforce 0
 
-yum install -y docker kubelet kubeadm kubectl kubernetes-cni ntp
+yum install -y docker kubelet-1.6.5 kubeadm-1.6.5 kubectl-1.6.5 kubernetes-cni-1.6.5 ntp
 
 systemctl enable docker && systemctl start docker
 systemctl enable kubelet && systemctl start kubelet