diff --git a/README.md b/README.md
index 8f3b2cf..9ca4111 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 This Github Action is that send pull request on bundle update.  
 To draw bundle update diff table, I'd like use [bundler-diff](https://github.com/sinsoku/bundler-diff), Thank you.
 
-This Github Action is running on **[ruby2.6-alipne](https://github.com/docker-library/ruby/blob/5c9e21cbf79b7f36d505555c9ecd62cf0f7e07f8/2.6/alpine3.10/Dockerfile)**.
+This Github Action is running on **[ruby2.6-alpine](https://github.com/docker-library/ruby/blob/5c9e21cbf79b7f36d505555c9ecd62cf0f7e07f8/2.6/alpine3.10/Dockerfile)**.
 
 ## Usage
 ※ Without Gemfile and Gemfile.lock, this workflow is failure. 
@@ -28,8 +28,35 @@ jobs:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           git_user_name: example_name
           git_email: test@example.com
-          reviewers: supermanner,hoge,fuga // optional
-          bundler_version: 2.0.1 // optional
+          reviewers: supermanner,hoge,fuga ## optional
+          bundler_version: 2.0.1 ## optional
+```
+### Or to update Gemfile.lock when Gemfile changed
+
+```
+name: pull request on bundle update
+on:
+  push:
+    paths:
+      - 'Gemfile' 
+  
+  
+jobs:
+  bundle-update:
+    name: bundle update
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+        with:
+          fetch-depth: 1
+      - name: pull request on bundle update
+        uses: woodcock3/pull-request-on-bundle-update@v1.0.1
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          git_user_name: ${{ secrets.HUB_USER }}
+          git_email: ${{ secrets.HUB_EMAIL }}
+          bundler_version: 2.1.4 ## optional
 ```
 
 ## Demo
diff --git a/entrypoint.sh b/entrypoint.sh
index 8385f98..0ae758d 100644
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -17,15 +17,15 @@ if [[ -z "$GIT_EMAIL" ]]; then
   exit 1
 fi
 
-git remote set-url origin "https://$GITHUB_ACTOR:$GITHUB_TOKEN@github.com/$GITHUB_REPOSITORY"
+git remote set-url origin "https://github.com/$GIT_USER_NAME/$GITHUB_REPOSITORY.git"
 git checkout master
 BRANCH_NAME="bundle_update/$(date "+%Y%m%d_%H%M%S")"
 git checkout -b ${BRANCH_NAME}
 
 export PATH="/usr/local/bundle/bin:$PATH"
 
-if [[ -n "$INPUT_BUNDLER_VERSION" ]]; then
-  gem install bundler -v "$INPUT_BUNDLER_VERSION"
+if [[ -n "$BUNDLER_VERSION" ]]; then
+  gem install bundler -v "$BUNDLER_VERSION"
 else
   gem install bundler
 fi
@@ -44,6 +44,7 @@ fi
 
 export GITHUB_USER="$GITHUB_ACTOR"
 
+git config --global --add safe.directory /github/workspace
 git config --global user.name $GIT_USER_NAME
 git config --global user.email $GIT_EMAIL