diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..3ac4dc7
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,4 @@
+[submodule "vendor/gosrc.io/xmpp"]
+	path = vendor/gosrc.io/xmpp
+	url = https://github.com/genofire/go-xmpp
+	branch = msg_extension
diff --git a/vendor/gosrc.io/xmpp b/vendor/gosrc.io/xmpp
new file mode 160000
index 0000000..3ddad3f
--- /dev/null
+++ b/vendor/gosrc.io/xmpp
@@ -0,0 +1 @@
+Subproject commit 3ddad3f7a28604fa8c4fd5035d5a37aa1d676c95