diff --git a/.github/workflows/dependabot-auto-merge.yml b/.github/workflows/dependabot-auto-merge.yml
new file mode 100644
index 000000000..fed182e42
--- /dev/null
+++ b/.github/workflows/dependabot-auto-merge.yml
@@ -0,0 +1,32 @@
+name: Dependabot auto-merge
+
+# pull_request_target gives this workflow a write token for Dependabot PRs.
+# It never checks out PR code, so no untrusted code runs in this context.
+on: pull_request_target
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  dependabot:
+    name: Auto-merge minor and patch updates
+    runs-on: ubuntu-latest
+    if: github.event.pull_request.user.login == 'dependabot[bot]'
+    steps:
+      - name: Fetch Dependabot metadata
+        id: metadata
+        uses: dependabot/fetch-metadata@25dd0e34f4fe68f24cc83900b1fe3fe149efef98 # v3.1.0
+
+      # GitHub Actions updates are skipped: they edit workflow files, which
+      # GITHUB_TOKEN (no workflows permission) cannot merge.
+      - name: Approve and enable auto-merge
+        if: (steps.metadata.outputs.update-type == 'version-update:semver-minor' || steps.metadata.outputs.update-type == 'version-update:semver-patch') && steps.metadata.outputs.package-ecosystem != 'github_actions'
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          PR_URL: ${{ github.event.pull_request.html_url }}
+        run: |
+          if [ "$(gh pr view "$PR_URL" --json reviewDecision --jq .reviewDecision)" != "APPROVED" ]; then
+            gh pr review --approve "$PR_URL"
+          fi
+          gh pr merge --auto --squash "$PR_URL"