diff --git a/.github/workflows/no_aws_credential.yml b/.github/workflows/no_aws_credential.yml
deleted file mode 100644
index 3d86c7a..0000000
--- a/.github/workflows/no_aws_credential.yml
+++ /dev/null
@@ -1,20 +0,0 @@
-on:
-  pull_request:
-    branches:
-      - master
-    types: opened
-jobs:
-  list-change-stack:
-    runs-on: ubuntu-latest
-    name: list cfn stack change set
-    steps:
-      - name: checkout
-        uses: actions/checkout@v2
-      - name: describe change set
-        id: describe-change-set
-        uses: ./
-        with:
-          stack_name: omochi
-          template_body: after.cf.yml
-      - name: echo output
-        run: echo "Result was ${{ steps.describe-change-set.outputs.result }}"
diff --git a/.github/workflows/no_diff.yml b/.github/workflows/no_diff.yml
deleted file mode 100644
index 022cd98..0000000
--- a/.github/workflows/no_diff.yml
+++ /dev/null
@@ -1,45 +0,0 @@
-on:
-  pull_request:
-    types: [opened, synchronize]
-jobs:
-  list-change-stack:
-    runs-on: ubuntu-latest
-    name: list cfn stack change set
-    steps:
-      - name: checkout
-        uses: actions/checkout@v2
-      - name: configure AWS credentials
-        uses: aws-actions/configure-aws-credentials@v1
-        with:
-          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
-          aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
-          aws-region: ap-northeast-1
-      - name: describe change set
-        id: describe-change-set
-        uses: ./
-        with:
-          stack_name: omochi
-          template_body: before.cf.yml
-
-      - name: archive diff
-        uses: actions/upload-artifact@v1
-        with:
-          name: diff
-          path: ${{ steps.describe-change-set.outputs.diff_file_path }}
-
-      - name: Download diff markdown
-        uses: actions/download-artifact@v1
-        with:
-          name: diff
-
-      - name: Post comments
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          URL: ${{ github.event.pull_request.comments_url }}
-          FILE_PATH: ${{ steps.describe-change-set.outputs.diff_file_path }}
-        run: |
-          cat ${FILE_PATH} | xargs echo
-          curl -X POST \
-            -H "Authorization: token ${GITHUB_TOKEN}" \
-            -d "{\"body\": \"$(cat ${FILE_PATH} | xargs echo)\"}" \
-            ${URL}
\ No newline at end of file
diff --git a/.github/workflows/no_iam_policy.yml b/.github/workflows/no_iam_policy.yml
deleted file mode 100644
index 35ecee1..0000000
--- a/.github/workflows/no_iam_policy.yml
+++ /dev/null
@@ -1,31 +0,0 @@
-on:
-  pull_request:
-    branches:
-      - master
-    types: opened
-jobs:
-  list-change-stack:
-    runs-on: ubuntu-latest
-    name: list cfn stack change set
-    steps:
-      - name: checkout
-        uses: actions/checkout@v2
-      - name: configure AWS credentials
-        uses: aws-actions/configure-aws-credentials@v1
-        with:
-          aws-access-key-id: ${{ secrets.NO_IAM_POLICY_AWS_ACCESS_KEY_ID }}
-          aws-secret-access-key: ${{ secrets.NO_IAM_POLICY_AWS_SECRET_ACCESS_KEY }}
-          aws-region: ap-northeast-1
-      - name: describe change set
-        id: describe-change-set
-        uses: ./
-        with:
-          stack_name: omochi
-          template_body: after.cf.yml
-      - name: echo output
-        run: echo "Result was ${{ steps.describe-change-set.outputs.result }}"
-      - name: archive change set
-        uses: actions/upload-artifact@v1
-        with:
-          name: change-set-archive
-          path: ${{ steps.describe-change-set.outputs.result_file_path }}
diff --git a/.github/workflows/no_stack_found.yml b/.github/workflows/no_stack_found.yml
deleted file mode 100644
index e468e54..0000000
--- a/.github/workflows/no_stack_found.yml
+++ /dev/null
@@ -1,31 +0,0 @@
-on:
-  pull_request:
-    branches:
-      - master
-    types: opened
-jobs:
-  list-change-stack:
-    runs-on: ubuntu-latest
-    name: list cfn stack change set
-    steps:
-      - name: checkout
-        uses: actions/checkout@v2
-      - name: configure AWS credentials
-        uses: aws-actions/configure-aws-credentials@v1
-        with:
-          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
-          aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
-          aws-region: ap-northeast-1
-      - name: describe change set
-        id: describe-change-set
-        uses: ./
-        with:
-          stack_name: warabimochi
-          template_body: after.cf.yml
-      - name: echo output
-        run: echo "Result was ${{ steps.describe-change-set.outputs.result }}"
-      - name: archive change set
-        uses: actions/upload-artifact@v1
-        with:
-          name: change-set-archive
-          path: ${{ steps.describe-change-set.outputs.file_path }}
diff --git a/.github/workflows/no_stack_name_provided.yml b/.github/workflows/no_stack_name_provided.yml
deleted file mode 100644
index 731619d..0000000
--- a/.github/workflows/no_stack_name_provided.yml
+++ /dev/null
@@ -1,30 +0,0 @@
-on:
-  pull_request:
-    branches:
-      - master
-    types: opened
-jobs:
-  list-change-stack:
-    runs-on: ubuntu-latest
-    name: list cfn stack change set
-    steps:
-      - name: checkout
-        uses: actions/checkout@v2
-      - name: configure AWS credentials
-        uses: aws-actions/configure-aws-credentials@v1
-        with:
-          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
-          aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
-          aws-region: ap-northeast-1
-      - name: describe change set
-        id: describe-change-set
-        uses: ./
-        with:
-          template_body: after.cf.yml
-      - name: echo output
-        run: echo "Result was ${{ steps.describe-change-set.outputs.result }}"
-      - name: archive change set
-        uses: actions/upload-artifact@v1
-        with:
-          name: change-set-archive
-          path: ${{ steps.describe-change-set.outputs.file_path }}
diff --git a/.github/workflows/no_template_body_provided.yml b/.github/workflows/no_template_body_provided.yml
deleted file mode 100644
index 7394788..0000000
--- a/.github/workflows/no_template_body_provided.yml
+++ /dev/null
@@ -1,30 +0,0 @@
-on:
-  pull_request:
-    branches:
-      - master
-    types: opened
-jobs:
-  list-change-stack:
-    runs-on: ubuntu-latest
-    name: list cfn stack change set
-    steps:
-      - name: checkout
-        uses: actions/checkout@v2
-      - name: configure AWS credentials
-        uses: aws-actions/configure-aws-credentials@v1
-        with:
-          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
-          aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
-          aws-region: ap-northeast-1
-      - name: describe change set
-        id: describe-change-set
-        uses: ./
-        with:
-          stack_name: omochi
-      - name: echo output
-        run: echo "Result was ${{ steps.describe-change-set.outputs.result }}"
-      - name: archive change set
-        uses: actions/upload-artifact@v1
-        with:
-          name: change-set-archive
-          path: ${{ steps.describe-change-set.outputs.file_path }}
diff --git a/Dockerfile b/Dockerfile
index ef24bd9..70a1a4a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,12 +1,13 @@
 FROM python:3
 
 RUN curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip" \
-  && unzip awscliv2.zip \
+  && unzip -q awscliv2.zip \
   && ./aws/install
 
 RUN apt-get update \
   && apt-get install -y less jq
 
 COPY entrypoint.sh /entrypoint.sh
+COPY pretty_format.py /pretty_format.py
 
 ENTRYPOINT ["/entrypoint.sh"]
diff --git a/README.md b/README.md
index d05543e..d86b9a0 100644
--- a/README.md
+++ b/README.md
@@ -37,7 +37,7 @@ ex. describe change set diff like management console.
 
   - name: describe change set
     id: describe-change-set
-    uses: Blue-Pix/describe-cfn-change-set@v2
+    uses: Blue-Pix/describe-cfn-change-set@v2.1
     with:
       stack_name: omochi
       template_body: after.cf.yml
diff --git a/entrypoint.sh b/entrypoint.sh
index 573771a..d1c8d89 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -29,10 +29,10 @@ if [ ${status} != "CREATE_COMPLETE" ] && [ ${status} != "FAILED" ]; then
   exit 1
 fi
 
-result=$(cat $uuid.json | jq -c)
+result=$(cat $uuid.json | jq -c .)
 echo "::set-output name=change_set_name::$uuid"
 echo "::set-output name=result::$result"
 echo "::set-output name=result_file_path::$uuid.json"
 
-python pretty_format.py $uuid $INPUT_STACK_NAME
+python /pretty_format.py $uuid $INPUT_STACK_NAME
 echo "::set-output name=diff_file_path::$uuid.html"
diff --git a/pretty_format.py b/pretty_format.py
old mode 100644
new mode 100755