diff --git a/tox.ini b/tox.ini
index ffdf8697..bfe80e8e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,14 +4,13 @@ minversion = 2.0
 skipsdist = True
 
 [testenv]
-install_command = {toxinidir}/tools/tox_install.sh {env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}
+install_command = pip install {opts} {packages}
 setenv = VIRTUAL_ENV={envdir}
-         BRANCH_NAME=master
-         CLIENT_NAME=vmware-nsxlib
          PYTHONWARNINGS=default::DeprecationWarning
 passenv = TRACE_FAILONLY GENERATE_HASHES http_proxy HTTP_PROXY https_proxy HTTPS_PROXY no_proxy NO_PROXY
 usedevelop = True
-deps = -r{toxinidir}/requirements.txt
+deps = -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt}
+       -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
 whitelist_externals = sh
 commands =
@@ -66,7 +65,8 @@ whitelist_externals =
     bash
 
 [testenv:bandit]
-deps = -r{toxinidir}/test-requirements.txt
+deps = -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt}
+       -r{toxinidir}/test-requirements.txt
 commands = bandit -r vmware_nsxlib -n 5 -ll
 
 [testenv:cover]