diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 8c139c7be..5acde1a9a 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -4,3 +4,8 @@ updates:
   directory: "/"
   schedule:
     interval: "weekly"
+
+- package-ecosystem: "gitsubmodule"
+  directory: "/"
+  schedule:
+    interval: "monthly"