diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..bc4fe37
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "external/glfw"]
+	path = external/glfw
+	url = https://github.com/glfw/glfw.git
diff --git a/external/glfw b/external/glfw
new file mode 160000
index 0000000..0f488ac
--- /dev/null
+++ b/external/glfw
@@ -0,0 +1 @@
+Subproject commit 0f488ac2865d766155344fb356acb40007421ec8