diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..45fd84a
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "pjproject"]
+	path = pjproject
+	url = https://github.com/pjsip/pjproject.git
diff --git a/pjproject b/pjproject
new file mode 160000
index 0000000..796a27a
--- /dev/null
+++ b/pjproject
@@ -0,0 +1 @@
+Subproject commit 796a27a5f2f9a1f704d0a25418f6596af7eab460