--- a/setup.cfg
+++ b/setup.cfg
@@ -34,7 +34,6 @@
 [options]
 packages = find:
 zip_safe = false
-setup_requires = pytest-runner
 install_requires = 
 	cffi>=0.6
 	html5lib>=0.999999999
@@ -43,11 +42,6 @@
 	cssselect2>=0.1
 	CairoSVG>=1.0.20
 	Pyphen>=0.8
-tests_require = 
-	pytest-runner
-	pytest-cov
-	pytest-flake8
-	pytest-isort
 
 [options.entry_points]
 console-scripts = weasyprint = weasyprint.__main__:main
@@ -72,7 +72,6 @@
 test = pytest
 
 [tool:pytest]
-addopts = --flake8 --isort
 norecursedirs = build dist .cache .eggs .git
 
 [coverage:run]