diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000000..91c8cb4365
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "js/SpiderMonkey"]
+	path = js/SpiderMonkey
+	url = git://github.com/funkaster/SpiderMonkey.git
diff --git a/js/SpiderMonkey b/js/SpiderMonkey
new file mode 160000
index 0000000000..573cade1e0
--- /dev/null
+++ b/js/SpiderMonkey
@@ -0,0 +1 @@
+Subproject commit 573cade1e067d6627f6dea4d57d3ddf04a64037b