diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index fa561727..97190da0 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -86,6 +86,11 @@ jobs:
             plugin-secrets-version: 4.6.5
             plugin-diff-version: 3.12.5
             extra-helmfile-flags: '--enable-live-output'
+          - helm-version: v4.0.0-beta.1
+            kustomize-version: v5.4.3
+            plugin-secrets-version: 4.6.5
+            plugin-diff-version: 3.12.5
+            extra-helmfile-flags: ''
     steps:
       - uses: actions/checkout@v5
       - uses: actions/setup-go@v6
diff --git a/pkg/exectest/helm.go b/pkg/exectest/helm.go
index 9daaf0ec..5857d398 100644
--- a/pkg/exectest/helm.go
+++ b/pkg/exectest/helm.go
@@ -210,7 +210,7 @@ func (helm *Helm) IsHelm3() bool {
 	if helm.Version == nil {
 		return helm.Helm3
 	}
-	return helm.Version.Major() == 3
+	return helm.Version.Major() >= 3
 }
 
 func (helm *Helm) GetVersion() helmexec.Version {
diff --git a/pkg/helmexec/exec.go b/pkg/helmexec/exec.go
index fd185b71..37b5c3ae 100644
--- a/pkg/helmexec/exec.go
+++ b/pkg/helmexec/exec.go
@@ -647,7 +647,7 @@ func (helm *execer) write(w io.Writer, out []byte) {
 }
 
 func (helm *execer) IsHelm3() bool {
-	return helm.version.Major() == 3
+	return helm.version.Major() >= 3
 }
 
 func (helm *execer) GetVersion() Version {
diff --git a/test/integration/run.sh b/test/integration/run.sh
index d0abedfb..41548fc6 100755
--- a/test/integration/run.sh
+++ b/test/integration/run.sh
@@ -30,6 +30,7 @@ export HELM_CONFIG_HOME="${helm_dir}/config"
 HELM_DIFF_VERSION="${HELM_DIFF_VERSION:-3.12.5}"
 HELM_GIT_VERSION="${HELM_GIT_VERSION:-1.3.0}"
 HELM_SECRETS_VERSION="${HELM_SECRETS_VERSION:-3.15.0}"
+HELM_CURRENT_VERSION="$(${helm} version --short | grep -o 'v[0-9.]\+')"
 export GNUPGHOME="${PWD}/${dir}/.gnupg"
 export SOPS_PGP_FP="B2D6D7BBEC03B2E66571C8C00AD18E16CFDEF700"
 
@@ -70,9 +71,15 @@ function cleanup() {
 set -e
 trap cleanup EXIT
 info "Using namespace: ${test_ns}"
-info "Using Helm version:" $(${helm} version --short | grep -o 'v[0-9.]\+')
-${helm} plugin ls | grep "^diff" || ${helm} plugin install https://github.com/databus23/helm-diff --version v${HELM_DIFF_VERSION}
-${helm} plugin ls | grep "^helm-git" || ${helm} plugin install https://github.com/aslafy-z/helm-git --version v${HELM_GIT_VERSION}
+info "Using Helm version:" ${HELM_CURRENT_VERSION}
+
+# if helm version is bigger or equal than v4.0.0, we need to set HELM_PLUGIN_INSTALL_EXTRA_ARGS to --verify=false
+if [[ "${HELM_CURRENT_VERSION}" == v4* ]]; then
+    HELM_PLUGIN_INSTALL_EXTRA_ARGS="--verify=false"
+fi
+
+${helm} plugin ls | grep "^diff" || ${helm} plugin install https://github.com/databus23/helm-diff --version v${HELM_DIFF_VERSION} ${HELM_PLUGIN_INSTALL_EXTRA_ARGS}
+${helm} plugin ls | grep "^helm-git" || ${helm} plugin install https://github.com/aslafy-z/helm-git --version v${HELM_GIT_VERSION} ${HELM_PLUGIN_INSTALL_EXTRA_ARGS}
 info "Using Kustomize version: $(kustomize version --short | grep -o 'v[0-9.]\+')"
 ${kubectl} get namespace ${test_ns} &> /dev/null && warn "Namespace ${test_ns} exists, from a previous test run?"
 ${kubectl} create namespace ${test_ns} || fail "Could not create namespace ${test_ns}"