diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..74c71d4
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "lib/BOSL2"]
+	path = lib/BOSL2
+	url = https://github.com/BelfrySCAD/BOSL2.git
diff --git a/lib/BOSL2 b/lib/BOSL2
new file mode 160000
index 0000000..7e5dfe5
--- /dev/null
+++ b/lib/BOSL2
@@ -0,0 +1 @@
+Subproject commit 7e5dfe5275b23f1b568962e2e286f0630c0c9b57