diff --git a/.github/workflows/auto-fix.yml b/.github/workflows/auto-fix.yml
new file mode 100644
index 0000000..b1551f1
--- /dev/null
+++ b/.github/workflows/auto-fix.yml
@@ -0,0 +1,45 @@
+name: auto fix
+
+on:
+  push:
+
+jobs:
+  tidy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          persist-credentials: false
+          fetch-depth: 0
+
+      - name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.17
+
+      - name: Setup Git
+        run: |
+          git config --local user.email "41898282+github-actions[bot]@users.noreply.github.com"
+          git config --local user.name "github-actions[bot]"
+
+      - name: Mod Tidy
+        run: |
+          go mod tidy
+          git add .
+          git diff-index --quiet HEAD || git commit -m "go mod tidy"
+
+      - name: gofmt
+        run: |
+          go fmt ./...
+          git add .
+          git diff-index --quiet HEAD || git commit -m "gofmt"
+
+      - name: Pull changes
+        run: git pull -r
+
+      - name: Push changes
+        uses: ad-m/github-push-action@master
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          branch: ${{ github.ref }}