diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..36f41ea
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "backend"]
+	path = backend
+	url = git@git.maenle.net:raphael/calenderwatch_server.git
diff --git a/backend b/backend
new file mode 160000
index 0000000..fed3fdd
--- /dev/null
+++ b/backend
@@ -0,0 +1 @@
+Subproject commit fed3fddb2182d27a3bd832f354e0ec1b9ac61667