diff --git a/pyproject.toml b/pyproject.toml
index 171774896f..e4513f1e4e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -68,11 +68,5 @@ config-settings = {build-dir = "_build"}
 before-all = "bash packaging/install_dependencies.sh"
 environment = { PATH = "/nmodlwheel/flex/bin:/nmodlwheel/bison/bin:$PATH" }
 
-[tool.pytest]
+[tool.pytest.ini_options]
 testpaths = "test/unit/pybind"
-
-[tool.doctest]
-builder = "doctest"
-
-[tool.flake8]
-max-line-length = 100
diff --git a/setup.cfg b/setup.cfg
new file mode 100644
index 0000000000..54a600626f
--- /dev/null
+++ b/setup.cfg
@@ -0,0 +1,5 @@
+[doctest]
+builder = doctest
+
+[flake8]
+max-line-length = 100