diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index 0d75eec..f82f308 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -4,11 +4,11 @@
     "dockerfile": "Dockerfile",
     "args": {
       "TOOLS_GO_VERSION": "1.25",
-      "TOOLS_HELM_VERSION": "3.19.0",
-      "TOOLS_ISTIO_VERSION": "1.27.1",
-      "TOOLS_KUBECTL_VERSION": "1.34.1",
+      "TOOLS_ISTIO_VERSION": "1.28.3",
       "TOOLS_ARGO_ROLLOUTS_VERSION": "1.8.3",
-      "TOOLS_CILIUM_VERSION": "0.18.7"
+      "TOOLS_KUBECTL_VERSION": "1.35.0",
+      "TOOLS_HELM_VERSION": "4.1.0",
+      "TOOLS_CILIUM_VERSION": "0.19.0"
     }
   },
   "features": {
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 017cfba..993c2e5 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -47,7 +47,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v6
         with:
-          go-version: '^1.25.5'
+          go-version: '^1.25.6'
           cache: false
 
       - name: Run cmd/main.go tests
@@ -87,11 +87,11 @@ jobs:
       - name: Set up Helm
         uses: azure/setup-helm@v4.2.0
         with:
-          version: v3.17.0
+          version: v4.1.0
 
       - name: Install unittest plugin
         run: |
-          helm plugin install https://github.com/helm-unittest/helm-unittest
+          helm plugin install --verify=false https://github.com/helm-unittest/helm-unittest
 
       - name: Chart init
         run: |
diff --git a/Makefile b/Makefile
index 265604f..e2ed9b0 100644
--- a/Makefile
+++ b/Makefile
@@ -136,11 +136,11 @@ DOCKER_BUILDER ?= docker buildx
 DOCKER_BUILD_ARGS ?= --pull --load --platform linux/$(LOCALARCH) --builder $(BUILDX_BUILDER_NAME)
 
 # tools image build args
-TOOLS_ISTIO_VERSION ?= 1.28.1
+TOOLS_ISTIO_VERSION ?= 1.28.3
 TOOLS_ARGO_ROLLOUTS_VERSION ?= 1.8.3
-TOOLS_KUBECTL_VERSION ?= 1.34.2
-TOOLS_HELM_VERSION ?= 3.19.0
-TOOLS_CILIUM_VERSION ?= 0.18.9
+TOOLS_KUBECTL_VERSION ?= 1.35.0
+TOOLS_HELM_VERSION ?= 4.1.0
+TOOLS_CILIUM_VERSION ?= 0.19.0
 
 # build args
 TOOLS_IMAGE_BUILD_ARGS =  --build-arg VERSION=$(VERSION)
@@ -196,7 +196,7 @@ helm-publish: helm-version
 .PHONY: helm-test
 helm-test: helm-version
 	mkdir -p tmp
-	helm plugin ls | grep unittest || helm plugin install https://github.com/helm-unittest/helm-unittest.git
+	helm plugin ls | grep unittest || helm plugin install --verify=false https://github.com/helm-unittest/helm-unittest.git
 	helm unittest helm/kagent-tools
 
 .PHONY: create-kind-cluster
diff --git a/go.mod b/go.mod
index 9b1a1b0..a4df5e2 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/kagent-dev/tools
 
-go 1.25.5
+go 1.25.6
 
 require (
 	github.com/joho/godotenv v1.5.1