diff --git a/.github/workflows/dependabot-auto-merge.yml b/.github/workflows/dependabot-auto-merge.yml
new file mode 100644
index 0000000..9554889
--- /dev/null
+++ b/.github/workflows/dependabot-auto-merge.yml
@@ -0,0 +1,37 @@
+name: Dependabot auto-merge
+on:
+  pull_request_target:
+    branches: [master]
+    types: [opened, synchronize, reopened, ready_for_review]
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  dependabot:
+    runs-on: ubuntu-latest
+    if: github.actor == 'dependabot[bot]' && github.event.pull_request.user.login == 'dependabot[bot]'
+    steps:
+      - name: Dependabot metadata
+        id: metadata
+        uses: dependabot/fetch-metadata@c9c4182bf1b97f5224aee3906afd2aa4e5408c08 # v2.3.0
+        with:
+          github-token: "${{ secrets.GITHUB_TOKEN }}"
+
+      # Prerequisites: repo must have "Allow GitHub Actions to create and approve
+      # pull requests" enabled (Settings → Actions → General) and "Allow
+      # auto-merge" enabled (Settings → General → Pull Requests).
+      - name: Auto-approve patch and minor updates
+        if: steps.metadata.outputs.update-type == 'version-update:semver-patch' || steps.metadata.outputs.update-type == 'version-update:semver-minor'
+        run: gh pr review --approve "$PR_URL"
+        env:
+          PR_URL: ${{ github.event.pull_request.html_url }}
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Enable auto-merge for patch and minor updates
+        if: steps.metadata.outputs.update-type == 'version-update:semver-patch' || steps.metadata.outputs.update-type == 'version-update:semver-minor'
+        run: gh pr merge --auto --squash "$PR_URL"
+        env:
+          PR_URL: ${{ github.event.pull_request.html_url }}
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}