diff --git a/setup.cfg b/setup.cfg
index be3bc4b4f36..44feb25ff7f 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -34,7 +34,11 @@ project_urls =
     Twitter=https://twitter.com/PythonPillow
 
 [options]
+packages = PIL
 python_requires = >=3.7
+include_package_data = True
+package_dir =
+    = src
 
 [options.extras_require]
 docs =
diff --git a/setup.py b/setup.py
index a2b2c691098..aa3168aa5be 100755
--- a/setup.py
+++ b/setup.py
@@ -999,9 +999,6 @@ def debug_build():
         version=PILLOW_VERSION,
         cmdclass={"build_ext": pil_build_ext},
         ext_modules=ext_modules,
-        include_package_data=True,
-        packages=["PIL"],
-        package_dir={"": "src"},
         zip_safe=not (debug_build() or PLATFORM_MINGW),
     )
 except RequiredDependencyException as err: