diff --git a/doc/source/index.rst b/doc/source/index.rst
index 4707c181..666a842d 100644
--- a/doc/source/index.rst
+++ b/doc/source/index.rst
@@ -43,7 +43,8 @@ using `Gerrit`_.
 .. _Launchpad: https://launchpad.net/keystonemiddleware
 .. _Gerrit: http://docs.openstack.org/infra/manual/developers.html#development-workflow
 
-Run tests with ``python setup.py test``.
+Run tests with ``tox -e py27`` if running with python 2.7. See the
+``tox.ini`` file for other test environment options.
 
 Indices and tables
 ==================