diff --git a/tox.ini b/tox.ini
index ce5bb82..1a3ce69 100644
--- a/tox.ini
+++ b/tox.ini
@@ -14,8 +14,8 @@ setenv = VIRTUAL_ENV={envdir}
 whitelist_externals = /bin/bash
                       rm
                       find
+install_command = pip install -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master} {opts} {packages}
 deps =
-  -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
   -r{toxinidir}/requirements.txt
   -r{toxinidir}/test-requirements.txt
 commands =
@@ -40,7 +40,6 @@ commands = python setup.py testr --coverage --testr-args='{posargs}'
 
 [testenv:docs]
 deps =
-  -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
   -r{toxinidir}/requirements.txt
   -r{toxinidir}/doc/requirements.txt
 commands = sphinx-build -W -b html doc/source doc/build/html