diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 00000000000000..f499c13a2ae0c9
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,9 @@
+version: 2
+updates:
+  - package-ecosystem: "gitsubmodule"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    allow:
+      - dependency-name: "third_party/pigweed/repo"
+    open-pull-requests-limit: 1