diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..a859fa1
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "premium"]
+	path = premium
+	url = https://github.com/donpat1to/Schichtenplaner-Pro.git
diff --git a/premium b/premium
new file mode 160000
index 0000000..21a4671
--- /dev/null
+++ b/premium
@@ -0,0 +1 @@
+Subproject commit 21a4671c1617bf26e89a3604b50dc22b5887e937