diff --git a/tox.ini b/tox.ini
index 4c2eab55..b794c834 100644
--- a/tox.ini
+++ b/tox.ini
@@ -15,7 +15,7 @@ commands =
   stestr run {posargs}
   stestr slowest
 deps =
-  -c{env:UPPER_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/upper-constraints.txt}
+  -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
   -r{toxinidir}/test-requirements.txt
   -r{toxinidir}/requirements.txt