diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..a32a8f8
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "external"]
+	path = external
+	url = https://github.com/Wiimm/wiimms-szs-tools
diff --git a/external b/external
new file mode 160000
index 0000000..246fdb3
--- /dev/null
+++ b/external
@@ -0,0 +1 @@
+Subproject commit 246fdb38d7c2fb3054b8f8528e11dc8f17691750