1 files changed, 1 insertions, 2 deletions

diff --git a/tox.ini b/tox.ini
index dc525a8..a8a4fa9 100644
--- a/tox.ini
+++ b/tox.ini
@@ -3,8 +3,7 @@ envlist =
     py27,py35,py36,py37,py38,pypy,pypy3,coverage,docs
 
 [testenv]
-deps =
-     .[test]
+extras = test
 commands =
     zope-testrunner --test-path=src []