diff --git a/argodeploy/install.sh b/argodeploy/install.sh
index c4dc719..7a85cf0 100755
--- a/argodeploy/install.sh
+++ b/argodeploy/install.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 #VER=$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)
-VER='v1.23.5'
+VER='v1.26.15'
 echo -n "Installing Kubectl@${VER}..."
 curl -sSLO https://storage.googleapis.com/kubernetes-release/release/${VER}/bin/linux/amd64/kubectl
 chmod +x ./kubectl
diff --git a/deploy/install.sh b/deploy/install.sh
index 5b38846..ff74e0a 100755
--- a/deploy/install.sh
+++ b/deploy/install.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 #VER=$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)
-VER='v1.23.5'
+VER='v1.26.15'
 echo -n "Installing Kubectl@${VER}..."
 curl -sSLO https://storage.googleapis.com/kubernetes-release/release/${VER}/bin/linux/amd64/kubectl
 chmod +x ./kubectl
diff --git a/manifest-validation/action.yml b/manifest-validation/action.yml
index b1a9b8f..0661fda 100644
--- a/manifest-validation/action.yml
+++ b/manifest-validation/action.yml
@@ -13,12 +13,12 @@ inputs:
 runs:
   using: "composite"
   steps:
-    - uses: yokawasa/action-setup-kube-tools@v0.7.1
+    - uses: yokawasa/action-setup-kube-tools@v0.11.1
       with:
-        kubectl: "1.21.5"
-        kustomize: "4.5.2"
+        kubectl: "1.26.15"
+        kustomize: "4.5.7"
         kubeval: "0.16.1"
-        conftest: "0.30.0"
+        conftest: "0.39.0"
     - run: ${{ github.action_path }}/validate_manifests.sh ${{ inputs.path }}
       shell: bash
       id: validate_manifests