diff --git a/setup.py b/setup.py
index 321d8f7..e801d77 100644
--- a/setup.py
+++ b/setup.py
@@ -53,7 +53,6 @@ def run(self):
                       ],
     setup_requires=['setuptools',
                     'flexmock >= 0.9.3',
-                    'pytest-runner',
                     'click',
                     'Jinja2',
                     ],
diff --git a/tox.ini b/tox.ini
index c22bfa7..e114303 100644
--- a/tox.ini
+++ b/tox.ini
@@ -3,6 +3,7 @@ envlist = py36, py37, py38, py39, py310
 
 [testenv]
 deps =
+    pytest
     pyparsing
     more-itertools <= 7.2.0
     setuptools
@@ -17,5 +18,5 @@ allowlist_externals = sh
 commands =
     sh -c 'cd tests/test_data/utest && python3 setup.py sdist && mv dist/utest-0.1.0.tar.gz ..'
     sh -c 'cd tests/test_data/isholiday-0.1 && python3 setup.py sdist && mv dist/isholiday-0.1.tar.gz ..'
-    python setup.py test --addopts -vv
+    python -m pytest -vv
 sitepackages = True