diff --git a/.gitmodules b/.gitmodules
index a4ca5cd..e4a024b 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,3 @@
 [submodule "tug"]
 	path = tug
-	url = https://git.gfz-potsdam.de/naaice/tug.git
+	url = git@git.gfz-potsdam.de:naaice/naaice_tug_input.git