diff --git a/tox.ini b/tox.ini
index 4e437e4..429b9f4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -5,7 +5,7 @@ skipsdist = True
  
 [testenv]
 setenv = VIRTUAL_ENV={envdir}
-deps = -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/stable/queens}
+deps = -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/queens}
        -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
 commands = bash -c 'if [ ! -d ./.testrepository ] ; then testr init ; fi'