diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index e2379a0..c327a78 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -1,4 +1,15 @@
 version: 2
+
+multi-ecosystem-groups:
+  infrastructure:
+    schedule:
+      interval: "weekly"
+      day: "wednesday"
+    open-pull-requests-limit: 25
+    commit-message:
+      prefix: "chore"
+      include: "scope"
+
 updates:
   - package-ecosystem: "nuget"
     directory: "/"
@@ -23,3 +34,27 @@ updates:
           - "major"
         patterns:
           - "*"
+
+  - package-ecosystem: "dotnet-sdk"
+    directory: "/"
+    patterns:
+      - "*"
+    multi-ecosystem-group: "infrastructure"
+    cooldown:
+      default-days: 7
+
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    patterns:
+      - "*"
+    multi-ecosystem-group: "infrastructure"
+    cooldown:
+      default-days: 7
+
+  - package-ecosystem: "uv"
+    directory: "/docsite"
+    patterns:
+      - "*"
+    multi-ecosystem-group: "infrastructure"
+    cooldown:
+      default-days: 7
diff --git a/.github/workflows/dependabot-auto-merge.yml b/.github/workflows/dependabot-auto-merge.yml
new file mode 100644
index 0000000..c2860dd
--- /dev/null
+++ b/.github/workflows/dependabot-auto-merge.yml
@@ -0,0 +1,34 @@
+name: Dependabot auto-merge
+
+on:
+  pull_request_target:
+    types: [opened, synchronize, reopened]
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  dependabot:
+    runs-on: ubuntu-latest
+    if: github.event.pull_request.user.login == 'dependabot[bot]' && github.repository == 'LayeredCraft/sharp-mud'
+    steps:
+      - name: Dependabot metadata
+        id: metadata
+        uses: dependabot/fetch-metadata@25dd0e34f4fe68f24cc83900b1fe3fe149efef98 # v3
+        with:
+          github-token: "${{ secrets.GITHUB_TOKEN }}"
+
+      - name: Approve PR
+        if: steps.metadata.outputs.update-type == 'version-update:semver-patch' || steps.metadata.outputs.update-type == 'version-update:semver-minor'
+        run: gh pr review --approve "$PR_URL"
+        env:
+          PR_URL: ${{ github.event.pull_request.html_url }}
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Enable auto-merge for Dependabot PRs
+        if: steps.metadata.outputs.update-type == 'version-update:semver-patch' || steps.metadata.outputs.update-type == 'version-update:semver-minor'
+        run: gh pr merge --auto --squash "$PR_URL"
+        env:
+          PR_URL: ${{ github.event.pull_request.html_url }}
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}