diff --git a/tox.ini b/tox.ini
index 15007e632..044802888 100644
--- a/tox.ini
+++ b/tox.ini
@@ -6,7 +6,7 @@ envlist = py37,py36,py27,pep8,genpolicy
 [testenv]
 usedevelop = True
 
-install_command = pip install -c{env:UPPER_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/branch/master/upper-constraints.txt} -U {opts} {packages}
+install_command = pip install -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/train} -U {opts} {packages}
 whitelist_externals = find
                       rm
 setenv =