diff --git a/tox.ini b/tox.ini
index 9912e5f7..5cd934c0 100644
--- a/tox.ini
+++ b/tox.ini
@@ -16,7 +16,7 @@ setenv =
    {mysql,all}: PIFPAF_MYSQL=pifpaf -g OS_TEST_DBAPI_ADMIN_CONNECTION run mysql --
    {mysql,postgresql,all}: BASECOMMAND={toxinidir}/tools/run-pifpaf-tests.sh
 deps =
-    -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt}
+    -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/stein}
     -r{toxinidir}/test-requirements.txt
     -r{toxinidir}/requirements.txt
 commands =