diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..f7047fb
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,4 @@
+[submodule "lib/pybind11"]
+	path = lib/pybind11
+	url = https://github.com/pybind/pybind11
+	branch = stable
diff --git a/lib/pybind11 b/lib/pybind11
new file mode 160000
index 0000000..c836059
--- /dev/null
+++ b/lib/pybind11
@@ -0,0 +1 @@
+Subproject commit c83605936b5e09ae806c40fe798d1e0b1143e272