diff --git a/tox.ini b/tox.ini
index cf7ae53..20e1caa 100644
--- a/tox.ini
+++ b/tox.ini
@@ -22,7 +22,7 @@ setenv =
 commands = python setup.py test --slowest --testr-args='{posargs}'
 sitepackages = True
 deps =
-    -c {env:UPPER_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/branch/master/upper-constraints.txt}
+    -c {env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/ussuri}
     -r {toxinidir}/requirements.txt
     -r {toxinidir}/test-requirements.txt
     -r {toxinidir}/molecule-requirements.txt