diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 00000000..7a8f771e
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "_assets/js/vendor/ace"]
+	path = _assets/js/vendor/ace
+	url = https://github.com/ajaxorg/ace-builds