diff --git a/pyproject.toml b/pyproject.toml
index c8c0401..6621305 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,6 +5,9 @@ build-backend = "setuptools.build_meta"
 [tool.setuptools]
 license-files = ["LICENSE"]
 
+[tool.setuptools.packages.find]
+exclude=["tests*", "sandbox"]
+
 [project]
 name = "pylint-pytest"
 version = "1.1.3"
diff --git a/setup.py b/setup.py
index 84d2a9c..d393410 100755
--- a/setup.py
+++ b/setup.py
@@ -1,6 +1,5 @@
-from setuptools import find_packages, setup
+from setuptools import setup
 
 setup(
-    packages=find_packages(exclude=["tests*", "sandbox"]),
     tests_require=["pytest", "pytest-cov", "pylint"],
 )