diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..bb01714
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "i"]
+	path = i
+	url = https://github.com/ge0rg/easy-xmpp-invitation
diff --git a/i b/i
new file mode 160000
index 0000000..fe94735
--- /dev/null
+++ b/i
@@ -0,0 +1 @@
+Subproject commit fe947352efa7dc04a1d45e32b5b2938fc060c395