diff --git a/pyproject.toml b/pyproject.toml
index 5c844cd..e51c005 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,3 +23,6 @@ ros2nix = "ros2nix.ros2nix:main"
 [build-system]
 requires = ["setuptools>=61.0"]
 build-backend = "setuptools.build_meta"
+
+[tool.setuptools]
+packages = ["ros2nix"]