diff --git a/.gitmodules b/.gitmodules
index afc1655..8e3ea7b 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,9 +1,11 @@
 [submodule "external/SASL"]
 	path = external/SASL
 	url = https://github.com/kjkriegel/S22.Sasl.git
+	branch = main
 [submodule "external/NFC"]
 	path = external/NFC
 	url = https://gitlab.com/fabinfra/fabaccess/nfc.git
+	branch = main
 [submodule "FabAccessAPI/schema"]
 	path = FabAccessAPI/schema
 	url = https://gitlab.com/fabinfra/fabaccess/fabaccess-api.git