diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..4eebb7f
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "libs/mruby"]
+	path = libs/mruby
+	url = https://github.com/mruby/mruby.git
diff --git a/libs/mruby b/libs/mruby
new file mode 160000
index 0000000..479af5c
--- /dev/null
+++ b/libs/mruby
@@ -0,0 +1 @@
+Subproject commit 479af5c1bdf09b80dafd4613036cac51adf5c395