diff --git a/tox.ini b/tox.ini
index c926b748fe282608f99c9c401b5e99af531cd65d..0fb07c66bbbafd910825e5048dde06f445d8fd4e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -3,7 +3,7 @@ envlist=flake8,py3
 
 [testenv:py3]
 deps =
-  -r requirements-test.txt
+  .[testing]
   pytest-cov
 commands =
   pytest --cov=swh --cov-branch {posargs}