diff --git a/pyproject.toml b/pyproject.toml
index d49d887191..5bc365e9ad 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,7 +12,7 @@
 [build-system]
 # TODO: specify minimum version of setuptools otherwise scikits.odes, NumPy, and others
 # will fail to install
-requires = ["setuptools", "wheel"]
+requires = ["setuptools", "wheel", "casadi>=3.6.0"]
 build-backend = "setuptools.build_meta"
 
 [project]
@@ -170,3 +170,6 @@ Prada2013 = "pybamm.input.parameters.lithium_ion.Prada2013:get_parameter_values"
 Ramadass2004 = "pybamm.input.parameters.lithium_ion.Ramadass2004:get_parameter_values"
 Xu2019 = "pybamm.input.parameters.lithium_ion.Xu2019:get_parameter_values"
 ECM_Example = "pybamm.input.parameters.ecm.example_set:get_parameter_values"
+
+# [tool.setuptools.packages.find]
+# include = ["pybamm", "pybamm.*"]