diff --git a/.github/workflows/pluto.yaml b/.github/workflows/pluto.yaml
index 152bb558b..216bf5242 100644
--- a/.github/workflows/pluto.yaml
+++ b/.github/workflows/pluto.yaml
@@ -18,8 +18,8 @@ jobs:
 
       - name: Use pluto
         run: |
-          pluto detect-files -d seichi-onp-k8s/manifests/seichi-kubernetes/apps --target-versions k8s=v1.27.5
+          pluto detect-files -d seichi-onp-k8s/manifests/seichi-kubernetes/apps --target-versions k8s=v1.27.6
 
       - name: Use pluto
         run: |
-          pluto detect-files -d seichi-onp-k8s/manifests/seichi-kubernetes/app-templates --target-versions k8s=v1.27.5
+          pluto detect-files -d seichi-onp-k8s/manifests/seichi-kubernetes/app-templates --target-versions k8s=v1.27.6
diff --git a/seichi-onp-k8s/cluster-boot-up/README.md b/seichi-onp-k8s/cluster-boot-up/README.md
index 2dfb2b886..a3cbfb24c 100644
--- a/seichi-onp-k8s/cluster-boot-up/README.md
+++ b/seichi-onp-k8s/cluster-boot-up/README.md
@@ -64,7 +64,7 @@ KubernetesノードのVMは cloudinit イメージで作成されています。
 2022/05/23現在、クラスタは (3 control plane nodes + 3 worker nodes) の構成で[作成されています](https://github.com/GiganticMinecraft/seichi_infra/blob/9b6a9346371b8f2add3a786b6badbe4e13d4464c/seichi-onp-k8s/cluster-boot-scripts/deploy-vm.sh#L14-L19)。
 
 クラスタの作成は以下のツール群で行っています。
-  - kubeadm, kubectl, kubelet v1.27.5
+  - kubeadm, kubectl, kubelet v1.27.6
 
 CNI には Cilium を利用しています。
 
diff --git a/seichi-onp-k8s/cluster-boot-up/scripts/nodes/k8s-node-setup.sh b/seichi-onp-k8s/cluster-boot-up/scripts/nodes/k8s-node-setup.sh
index 5c208fd83..0295f4bed 100644
--- a/seichi-onp-k8s/cluster-boot-up/scripts/nodes/k8s-node-setup.sh
+++ b/seichi-onp-k8s/cluster-boot-up/scripts/nodes/k8s-node-setup.sh
@@ -279,10 +279,10 @@ nodeRegistration:
   criSocket: "unix:///var/run/containerd/containerd.sock"
   kubeletExtraArgs:
     node-ip: "$KUBEADM_LOCAL_ENDPOINT"
-	imagePullPolicy: "IfNotPresent"
+    imagePullPolicy: "IfNotPresent"
 localAPIEndpoint:
-	advertiseAddress: "$KUBEADM_LOCAL_ENDPOINT"
-	bindPort: 6443
+  advertiseAddress: "$KUBEADM_LOCAL_ENDPOINT"
+  bindPort: 6443
 skipPhases:
   - addon/kube-proxy
 ---
@@ -357,8 +357,8 @@ nodeRegistration:
   kubeletExtraArgs:
     node-ip: "$KUBEADM_LOCAL_ENDPOINT" //FIXME
 localAPIEndpoint:
-	advertiseAddress: "$KUBEADM_LOCAL_ENDPOINT" //FIXME
-	bindPort: 6443
+  advertiseAddress: "$KUBEADM_LOCAL_ENDPOINT" //FIXME
+  bindPort: 6443
 discovery:
   bootstrapToken:
     apiServerEndpoint: "${KUBE_API_SERVER_VIP}:8443"