diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..92d19b3
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,33 @@
+version: 2
+updates:
+  # npm dependencies (Astro, Vercel adapter, Tailwind, Playwright, ...)
+  - package-ecosystem: "npm"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    # Group all npm bumps into a single PR to keep the noise down.
+    groups:
+      npm-dependencies:
+        patterns:
+          - "*"
+    open-pull-requests-limit: 5
+    labels:
+      - "dependencies"
+    commit-message:
+      prefix: "deps"
+      prefix-development: "deps-dev"
+
+  # GitHub Actions used in workflows (none yet, but future-proof).
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    groups:
+      github-actions:
+        patterns:
+          - "*"
+    labels:
+      - "dependencies"
+      - "github-actions"
+    commit-message:
+      prefix: "ci"