diff --git a/tox.ini b/tox.ini
index a8d52fa1..5e372930 100644
--- a/tox.ini
+++ b/tox.ini
@@ -24,7 +24,8 @@ setenv =
     env36: JEDI_TEST_ENVIRONMENT=36
     env37: JEDI_TEST_ENVIRONMENT=37
 commands =
-    pytest {posargs:jedi test}
+    pytest
+whitelist_externals = pytest
 [testenv:cov]
 commands =
     coverage run --source jedi -m pytest