diff --git a/tox.ini b/tox.ini
index bd6baf2..6977a03 100644
--- a/tox.ini
+++ b/tox.ini
@@ -12,4 +12,7 @@ allowlist_externals = poetry
 commands =
     poetry install -v
     pytest --doctest-modules tests --cov --cov-config=pyproject.toml --cov-report=xml
+    pip install pytest
+    pip install pytest-cov
     mypy
+