diff --git a/tox.ini b/tox.ini
index 2d05a534..ae10e451 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://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt?h=stable/queens} {opts} {packages}
 deps =
     -r{toxinidir}/test-requirements.txt
 commands =