diff --git a/tox.ini b/tox.ini
index 64ed4881..51a342d2 100644
--- a/tox.ini
+++ b/tox.ini
@@ -31,7 +31,7 @@ commands = oslopolicy-sample-generator --config-file=etc/masakari/masakari-polic
 
 [testenv:linters]
 deps =
-  -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
+  -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
   -r{toxinidir}/test-requirements.txt
 commands =
   {[testenv:pep8]commands}