diff --git a/README.md b/README.md
index e835df6..e8906d7 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 ## Usage
 
 ```yaml
-      - uses: licenseware/helm@v1
+      - uses: licenseware/helm@v1.1
         with:
           # required 👇
           kubeconfig: ${{ secrets.KUBECONFIG_FILE }} # JSON/YAML encoded string
@@ -15,6 +15,7 @@
           helm-version: "v3.9.4" # https://github.com/helm/helm/releases
           namespace: default
           release-name: ${{ github.event.repository.name }}
+          update-dependencies: "1" # helm dep update
           values: image.tag=${{ github.sha }} # comma separated key=value pairs
           values-file: ${{ secrets.HELM_VALUES }} # JSON/YAML encoded string
           wait: "1"
diff --git a/action.yml b/action.yml
index 869816f..9548ab6 100644
--- a/action.yml
+++ b/action.yml
@@ -3,7 +3,7 @@ author: meysam@licenseware.io
 branding:
   color: green
   icon: package
-description: Deploy Helm chart
+description: Deploy Helm chart in a GitHub action
 inputs:
   action:
     default: upgrade -i
@@ -33,6 +33,10 @@ inputs:
   release-name:
     default: ${{ github.event.repository.name }}
     required: false
+  update-dependencies:
+    default: "1"
+    description: Whether or not to run `helm dependency update` before deployment
+    required: false
   values:
     default: ""
     description: A comma separated list of values e.g. "key1=value1,key2=value2"
@@ -53,7 +57,8 @@ runs:
       name: Install Helm ${{ inputs.helm-version }}
       run: curl -fsSL https://git.io/get_helm.sh | bash
       shell: bash
-    - name: Build Helm dependencies
+    - if: inputs.update-dependencies == '1'
+      name: Build Helm dependencies
       run: helm dependency update ${{ inputs.chart-dir }}
       shell: bash
     - if: inputs.values-file != ''
@@ -62,12 +67,14 @@ runs:
         cat << 'EOF' > /tmp/values
         ${{ inputs.values-file }}
         EOF
+        chmod 600 /tmp/values
       shell: bash
     - name: Prepare KUBECONFIG
       run: |
         cat << 'EOF' > /tmp/kubeconfig
         ${{ inputs.kubeconfig }}
         EOF
+        chmod 600 /tmp/kubeconfig
       shell: bash
     - name: Deploy with Helm
       run: |