diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..525bff2
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "lib/index"]
+	path = lib/index
+	url = https://git.flash.moe/flash/index.git
diff --git a/lib/index b/lib/index
new file mode 160000
index 0000000..fbe4fe1
--- /dev/null
+++ b/lib/index
@@ -0,0 +1 @@
+Subproject commit fbe4fe18decd502a0ca15ffe8a7c3b2d847349d5