diff --git a/pyproject.toml b/pyproject.toml
index 842aac9..403cd97 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -41,14 +41,11 @@ Donation = 'https://opencollective.com/courtbouillon'
 [project.optional-dependencies]
 doc = ['sphinx', 'sphinx_rtd_theme']
 # TODO: remove the flake8 dependency when https://github.com/tholo/pytest-flake8/issues/87 is fixed
-test = ['pytest', 'pytest-xdist', 'pytest-flake8', 'pytest-isort', 'pytest-cov', 'coverage[toml]', 'flake8 <5']
+test = ['pytest']
 
 [tool.flit.sdist]
 exclude = ['.*']
 
-[tool.pytest.ini_options]
-addopts = '--isort --flake8 --numprocesses=auto'
-
 [tool.coverage.run]
 branch = true
 include = ['tests/*', 'pyphen/*']