diff --git a/.github/workflows/comment_on_pull_request.yml b/.github/workflows/comment_on_pull_request.yml
deleted file mode 100644
index 3a5e408..0000000
--- a/.github/workflows/comment_on_pull_request.yml
+++ /dev/null
@@ -1,26 +0,0 @@
-name: Comment on Pull Request
-on:
-  pull_request:
-
-jobs:
-  comment:
-    runs-on: ubuntu-latest
-    permissions:
-      contents: write
-    steps:
-      - uses: actions/checkout@v2
-      - run: yarn install
-      - run: yarn build
-      - uses: ./
-        with:
-          header: FromPR
-          recreate: true
-          message: |
-            Test ${{ github.sha }} is successfully ended.
-            This is message from PR.
-      - uses: ./
-        with:
-          header: FromPR
-          append: true
-          message: |
-            Append message.