diff --git a/README.md b/README.md
index ac3eaa7..50fe986 100644
--- a/README.md
+++ b/README.md
@@ -3,13 +3,13 @@
 项目致力于提供快速部署高可用`k8s`集群的工具, 同时也努力成为`k8s`实践、使用的参考书；基于二进制方式部署和利用`ansible-playbook`实现自动化；既提供一键安装脚本, 也可以根据`安装指南`分步执行安装各个组件。
 
 - **集群特性** `TLS`双向认证、`RBAC`授权、[多Master高可用](docs/setup/00-planning_and_overall_intro.md#ha-architecture)、支持`Network Policy`、备份恢复、[离线安装](docs/setup/offline_install.md)
-- **集群版本** kubernetes v1.17, v1.18, v1.19, v1.20
+- **集群版本** kubernetes v1.18, v1.19, v1.20, v1.21
 - **操作系统** CentOS/RedHat 7, Debian 9/10, Ubuntu 16.04/18.04/20.04
-- **运行时** docker 18.09.x, 19.03.x, 20.10.x [containerd](docs/setup/containerd.md) v1.4.3
+- **运行时** docker 19.03.x, 20.10.x [containerd](docs/setup/containerd.md) v1.4.4
 - **网络** [calico](docs/setup/network-plugin/calico.md), [cilium](docs/setup/network-plugin/cilium.md), [flannel](docs/setup/network-plugin/flannel.md), [kube-ovn](docs/setup/network-plugin/kube-ovn.md), [kube-router](docs/setup/network-plugin/kube-router.md)
 
 
-**[news]** kubeasz 技术上通过cncf一致性测试 [详情](docs/mixes/conformance.md)
+**[news]** kubeasz 通过cncf一致性测试 [详情](https://github.com/cncf/k8s-conformance/tree/master/v1.20/kubeasz)
 
 **[news]** 群里大佬上新一套免费[kubernetes架构师课程](https://www.toutiao.com/c/user/token/MS4wLjABAAAA0YFomuMNm87NNysXeUsQdI0Tt3gOgz8WG_0B3MzxsmI/?tab=article)，强烈推荐！
 
diff --git a/example/config.yml b/example/config.yml
index f972871..e513556 100644
--- a/example/config.yml
+++ b/example/config.yml
@@ -46,7 +46,7 @@ ETCD_WAL_DIR: ""
 ENABLE_MIRROR_REGISTRY: true
 
 # [containerd]基础容器镜像
-SANDBOX_IMAGE: "easzlab/pause-amd64:3.2"
+SANDBOX_IMAGE: "easzlab/pause-amd64:__pause__"
 
 # [containerd]容器持久化存储目录
 CONTAINERD_STORAGE_DIR: "/var/lib/containerd"
diff --git a/ezctl b/ezctl
index 24c9a90..1b89bf4 100755
--- a/ezctl
+++ b/ezctl
@@ -151,6 +151,7 @@ function new() {
     dashboardMetricsScraperVer=$(grep 'dashboardMetricsScraperVer=' ezdown|cut -d'=' -f2)
     metricsVer=$(grep 'metricsVer=' ezdown|cut -d'=' -f2)
     nfsProvisionerVer=$(grep 'nfsProvisionerVer=' ezdown|cut -d'=' -f2)
+    pauseVer=$(grep 'pauseVer=' ezdown|cut -d'=' -f2)
     promChartVer=$(grep 'promChartVer=' ezdown|cut -d'=' -f2)
     traefikChartVer=$(grep 'traefikChartVer=' ezdown|cut -d'=' -f2)
     harborVer=$(grep 'HARBOR_VER=' ezdown|cut -d'=' -f2)
@@ -164,6 +165,7 @@ function new() {
 	   -e "s/__kube_ovn__/$kubeOvnVer/g" \
 	   -e "s/__kube_router__/$kubeRouterVer/g" \
 	   -e "s/__coredns__/$corednsVer/g" \
+	   -e "s/__pause__/$pauseVer/g" \
 	   -e "s/__dns_node_cache__/$dnsNodeCacheVer/g" \
 	   -e "s/__dashboard__/$dashboardVer/g" \
 	   -e "s/__dash_metrics__/$dashboardMetricsScraperVer/g" \
diff --git a/ezdown b/ezdown
index 3e67f22..a962987 100755
--- a/ezdown
+++ b/ezdown
@@ -14,9 +14,9 @@ set -o errexit
 
 # default settings, can be overridden by cmd line options, see usage
 DOCKER_VER=20.10.5
-KUBEASZ_VER=3.0.1
+KUBEASZ_VER=3.1.0
 K8S_BIN_VER=v1.21.0
-EXT_BIN_VER=0.9.2
+EXT_BIN_VER=0.9.4
 SYS_PKG_VER=0.4.1
 HARBOR_VER=v2.1.3
 REGISTRY_MIRROR=CN
@@ -24,12 +24,12 @@ REGISTRY_MIRROR=CN
 # images needed by k8s cluster
 calicoVer=v3.15.3
 flannelVer=v0.13.0-amd64
-dnsNodeCacheVer=1.16.0
-corednsVer=1.8.3
+dnsNodeCacheVer=1.17.0
+corednsVer=1.8.0
 dashboardVer=v2.2.0
 dashboardMetricsScraperVer=v1.0.6
 metricsVer=v0.3.6
-pauseVer=3.2
+pauseVer=3.4.1
 nfsProvisionerVer=v4.0.1
 export ciliumVer=v1.4.1
 export kubeRouterVer=v0.3.1