diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..0efb34e
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,15 @@
+# Dependabot version updates for wrightkit.dev.
+# Docs: https://docs.github.com/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file
+version: 2
+updates:
+  # Site dependencies (pnpm lockfile at the repo root).
+  - package-ecosystem: npm
+    directory: /
+    schedule:
+      interval: weekly
+
+  # CI workflows and their action pins.
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: monthly