diff --git a/tox.ini b/tox.ini
index d0a9318a94d..ef9add803dc 100644
--- a/tox.ini
+++ b/tox.ini
@@ -17,7 +17,7 @@ setenv = VIRTUAL_ENV={envdir}
          OS_TEST_PATH=./cinder/tests/unit
 usedevelop = True
 
-deps = -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
+deps = -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
         -r{toxinidir}/test-requirements.txt
         -r{toxinidir}/requirements.txt
 
@@ -123,7 +123,7 @@ commands = {posargs}
 
 [testenv:docs]
 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}/doc/requirements.txt
 commands =
   rm -fr doc/source/contributor/api/