1 files changed, 1 insertions, 1 deletions
diff --git a/tox.ini b/tox.ini
index 4d84089..030f05b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -7,7 +7,7 @@ setenv = VIRTUAL_ENV={envdir}
 
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
-commands = python setup.py testr --testr-args="{posargs}"
+commands = stestr run --slowest {posargs}
 passenv = *_proxy *_PROXY
 
 [testenv:pep8]