diff --git a/.gitmodules b/.gitmodules
index b9d604ad..6d2e1ab4 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,4 @@
 [submodule "source/_pages/atdc"]
 	path = source/_pages/atdc
 	url = git@github.com:opdavies/atdc-pages.git
+	branch = main