diff --git a/tox.ini b/tox.ini
index 56a6878..284f573 100644
--- a/tox.ini
+++ b/tox.ini
@@ -8,10 +8,9 @@ max-line-length = 120
 
 [testenv:py37-flake8]
 commands = flake8
-deps = flake8
+deps = -rtest-requirements.txt
 
 [testenv:py37-pytest]
 commands = python -m pytest --cov=quarry -ra {posargs}
-deps = pytest
-       pytest-cov
+deps = -rtest-requirements.txt
        -rrequirements.txt