1 files changed, 1 insertions, 1 deletions
diff --git a/tox.ini b/tox.ini
index 185c212..34ec501 100644
--- a/tox.ini
+++ b/tox.ini
@@ -9,7 +9,7 @@ setenv =
 # We need to install a bit more than just `test' because those drivers have
 # custom tests that we always run
 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
   -r{toxinidir}/requirements.txt
 commands =