diff --git a/gen/pyproject.toml b/gen/pyproject.toml
index fad483e..a86337d 100644
--- a/gen/pyproject.toml
+++ b/gen/pyproject.toml
@@ -1,2 +1,2 @@
 [build-system]
-requires = ["setuptools>=30.3.0", "wheel >= 0.35.1"]
+requires = ["setuptools>=30.3.0", "wheel >= 0.35.1", "pybind11 >= 2.6.1"]