diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..ed0f14b
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "4ft4"]
+	path = 4ft4
+	url = https://github.com/andars/4ft4/
diff --git a/4ft4 b/4ft4
new file mode 160000
index 0000000..4aa6e1a
--- /dev/null
+++ b/4ft4
@@ -0,0 +1 @@
+Subproject commit 4aa6e1a28df09807dfeeb4c2c8a772fff428b0b8