diff --git a/.gitmodules b/.gitmodules
index e69de29..9980180 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -0,0 +1,5 @@
+[submodule "knxPython/pybind11"]
+	path = port/knxPython/pybind11
+	url = https://github.com/pybind/pybind11.git
+	branch = stable
+