diff --git a/tox.ini b/tox.ini
index e97de312..8a87b210 100644
--- a/tox.ini
+++ b/tox.ini
@@ -7,7 +7,7 @@ envlist = docs,linters,functional
 [testenv]
 usedevelop = True
 install_command =
-    pip install -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}
+    pip install -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/stein} {opts} {packages}
 commands =
     /usr/bin/find . -type f -name "*.pyc" -delete
 passenv =