diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..5120f29
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "third_party/wireguard-go"]
+	path = third_party/wireguard-go
+	url = https://git.zx2c4.com/wireguard-go
diff --git a/third_party/wireguard-go b/third_party/wireguard-go
new file mode 160000
index 0000000..da19db4
--- /dev/null
+++ b/third_party/wireguard-go
@@ -0,0 +1 @@
+Subproject commit da19db415a588e72fb8b13e5b5aa0b97db7cc30b