diff --git a/.gitmodules b/.gitmodules
index 61f0707..64c9710 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,15 +1,20 @@
 [submodule "OCORE"]
 	path = OCORE
 	url = https://git.processweb.de/Stefan/OCORE.git
+	branch = main
 [submodule "OCORE_web"]
 	path = OCORE_web
 	url = https://git.processweb.de/Stefan/OCORE_web.git
+	branch = main
 [submodule "OCORE_web_pdf"]
 	path = OCORE_web_pdf
 	url = https://git.processweb.de/Stefan/OCORE_web_pdf.git
+	branch = main
 [submodule "OCORE_Charting"]
 	path = OCORE_Charting
 	url = https://git.processweb.de/Stefan/OCORE_Charting.git
+	branch = main
 [submodule "eRechnungLib"]
 	path = eRechnungLib
 	url = https://git.processweb.de/ProcessWeb_Tools/eRechnungLib.git
+	branch = main