diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..47dcf72
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "external/GoUI"]
+	path = external/GoUI
+	url = https://dev.danilafe.com/CS-290/GoUI.git
diff --git a/external/GoUI b/external/GoUI
new file mode 160000
index 0000000..74d844b
--- /dev/null
+++ b/external/GoUI
@@ -0,0 +1 @@
+Subproject commit 74d844b60f81ef4c4428f577d6b3c960a20f4bb6