diff --git a/tox.ini b/tox.ini
index e3de8284..877b09f2 100644
--- a/tox.ini
+++ b/tox.ini
@@ -17,7 +17,7 @@ passenv =  http_proxy
            NO_PROXY
 deps = -r{toxinidir}/test-requirements.txt
        -r{toxinidir}/requirements.txt
-install_command = {toxinidir}/tools/tox_install.sh {env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}
+install_command = {toxinidir}/tools/tox_install.sh {env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt?h=stable/ocata} {opts} {packages}
 whitelist_externals = find
 commands =
     find . -type f -name "*.pyc" -delete