diff --git a/tox.ini b/tox.ini
index 8b707d6..7b0e95e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -5,7 +5,7 @@ envlist = py27, py34, py35, py36
 deps = pipenv
 commands=
     pipenv install --dev --skip-lock
-    pipenv run pytest tests/ {posargs}
+    pytest tests/ {posargs}
 
 [testenv:py27]
 basepython = python2.7