diff --git a/.github/workflows/mypy-action.yml b/.github/workflows/mypy-action.yml
deleted file mode 100644
index 09be1abde..000000000
--- a/.github/workflows/mypy-action.yml
+++ /dev/null
@@ -1,20 +0,0 @@
-name: reviewdog
-on: [pull_request]
-jobs:
-  mypy:
-    name: runner / mypy
-    runs-on: ubuntu-latest
-    steps:
-      - run: pip install mypy
-      - uses: actions/checkout@v4
-      - uses: tsuyoshicho/action-mypy@v4
-        with:
-          github_token: ${{ secrets.github_token }}
-          # Change reviewdog reporter if you need [github-pr-check,github-check,github-pr-review].
-          reporter: github-pr-review
-          # Change reporter level if you need.
-          # GitHub Status Check won't become failure with warning.
-          level: warning
-          # Change the current directory to run mypy command.
-          # mypy command reads setup.cfg or other settings file in this path.
-          workdir: .