diff --git a/tox.ini b/tox.ini
index 4736a27379..10076a6b8c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -5,6 +5,7 @@ envlist = py27,pep8
 
 [testenv]
 setenv = VIRTUAL_ENV={envdir}
+         OS_TEST_DBAPI_ADMIN_CONNECTION=mysql+pymysql://openstack_citest:openstack_citest@localhost/;postgresql://openstack_citest:openstack_citest@localhost/postgres;sqlite://
 usedevelop = True
 install_command = pip install {opts} {packages}
 deps = -r{toxinidir}/requirements.txt