diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a273ff5..f8dc71a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -3,32 +3,67 @@ name: CI
 on: [pull_request, workflow_dispatch]
 
 jobs:
-  install_all:
+  install_all_default:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - name: Setup helmfile
       uses: ./
     - name: Test
       run: |
         ls -l ~/bin
+        helmfile --version
         kubectl version --client
         helm version
         helm plugin list
+
+  install_helmfile_with_version:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Setup helmfile
+      uses: ./
+      with:
+        helmfile-version: "v0.135.0"
+    - name: Test
+      run: |
+        ls -l ~/bin
         helmfile --version
+        kubectl version --client
+        helm version
+        helm plugin list
+
+  install_helm_plugins_without_helm:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Setup helmfile
+      uses: ./
+      with:
+        install-kubectl: no
+        install-helm: no
+    - name: Test
+      run: |
+        ls -l ~/bin
+        helmfile --version
+        kubectl version --client
+        helm version
+        helm plugin list
 
   install_only_helmfile:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - name: Setup helmfile
       uses: ./
       with:
         install-kubectl: no
         install-helm: no
+        install-helm-plugins: no
     - name: Test
       run: |
         ls -l ~/bin
         helmfile --version
         kubectl version --client
         helm version
+        helm plugin list
diff --git a/README.md b/README.md
index 6fd9dc4..02adaa2 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,7 @@ jobs:
     steps:
     - uses: actions/checkout@v1
     - name: Setup helmfile
-      uses: mamezou-tech/setup-helmfile@v0.5.0
+      uses: mamezou-tech/setup-helmfile@v0.7.0
     - name: Test
       run: |
         helmfile --version
@@ -35,6 +35,7 @@ jobs:
 - `kubectl-release-date` : kubectl release date. Default `2020-08-04`
 - `install-kubectl` : Install kubectl. Default `yes`
 - `install-helm` : Install Helm. Default `yes`
+- `install-helm-plugins` : Install Helm plugins. Default `yes`
 
 > See "[Installing kubectl - Amazon EKS](https://docs.aws.amazon.com/eks/latest/userguide/install-kubectl.html)" for information how to specify the kubectl version.
 
@@ -47,30 +48,41 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
     - name: Setup helmfile
-      uses: mamezou-tech/setup-helmfile@v0.5.0
+      uses: mamezou-tech/setup-helmfile@v0.7.0
       with:
-        helmfile-version: "v0.118.0"
+        helmfile-version: "v0.135.0"
 ```
 
-If you want use default kubectl / Helm installed in GitHub Runner. you can specify inputs to not install them.
+If you are not particular about the version of kubectl / Helm and you can use the versions pre-installed on GitHub Actions runner, you can specify inputs not to install them. 
+
+> Notice: Helm plugins will be installed in this case.
 
 ```yaml
-name: CI
-on: [push]
 jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
     - name: Setup helmfile
-      uses: mamezou-tech/setup-helmfile@v0.6.0
+      uses: mamezou-tech/setup-helmfile@v0.7.0
       with:
         install-kubectl: no
         install-helm: no
 ```
 
+If you don't want helm plugins installed, specify `no` for `install-helm-plugins`.
+
+```yaml
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Setup helmfile
+      uses: mamezou-tech/setup-helmfile@v0.7.0
+      with:
+        install-helm-plugins: no
+```
+
 ### Build action (for maintainer)
 ```
 $ npm install
diff --git a/action.yml b/action.yml
index d11225a..499f5fe 100644
--- a/action.yml
+++ b/action.yml
@@ -29,6 +29,10 @@ inputs:
     description: "Install helm"
     default: "yes"
     required: false
+  install-helm-plugins:
+    description: "Install Helm plugins"
+    default: "yes"
+    required: false
 runs:
   using: "node12"
   main: "dist/index.js"
diff --git a/dist/index.js b/dist/index.js
index 0ffb367..a94f286 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -4865,6 +4865,8 @@ async function run() {
     }
     if (core.getInput("install-helm") === "yes") {
       installHelm(core.getInput("helm-version"));
+    }
+    if (core.getInput("install-helm-plugins") === "yes") {
       installHelmPlugins();
     }
     installHelmfile(core.getInput("helmfile-version"));
diff --git a/src/index.js b/src/index.js
index ff71c66..0921c86 100644
--- a/src/index.js
+++ b/src/index.js
@@ -8,6 +8,8 @@ async function run() {
     }
     if (core.getInput("install-helm") === "yes") {
       installHelm(core.getInput("helm-version"));
+    }
+    if (core.getInput("install-helm-plugins") === "yes") {
       installHelmPlugins();
     }
     installHelmfile(core.getInput("helmfile-version"));