diff --git a/.gitmodules b/.gitmodules
index 5f2d0a068e77b05ebda76dc14ec4c06df1998bf4..63cd18b1578c9cdcb47051aed6c7668a3ad8002e 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,4 @@
 [submodule "app"]
 	path = app
 	url = https://gitlab.eclipse.org/eclipse/xfsc/tsa/policy.git
+	branch = main