diff --git a/tox.ini b/tox.ini
index 3b30f3cd5f..53dc47d91a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,7 +4,7 @@ minversion = 2.3.2
 skipsdist = True
 
 [testenv]
-install_command = pip install -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}
+install_command = pip install -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt?h=stable/ocata} {opts} {packages}
 setenv =
   VIRTUAL_ENV={envdir}
   INTEGRATION_TESTS=0