diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..031008d
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,4 @@
+[submodule "singbox"]
+	path = sing-box
+	url = git@github.com:evlic/sing-box.git
+	branch = main
diff --git a/sing-box b/sing-box
new file mode 160000
index 0000000..0dfc114
--- /dev/null
+++ b/sing-box
@@ -0,0 +1 @@
+Subproject commit 0dfc1140a4ec7f15f58db590d950e58644cb2f1e