diff --git a/tox.ini b/tox.ini
index 2339f429..670b237b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -18,7 +18,7 @@ setenv =
     DISCOVER_DIRECTORY=mistralclient/tests/unit
 passenv = http_proxy HTTP_PROXY https_proxy HTTPS_PROXY no_proxy NO_PROXY
 deps =
-    -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt}
+    -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt?h=stable/rocky}
     -r{toxinidir}/requirements.txt
     -r{toxinidir}/test-requirements.txt
 commands =