diff --git a/tox.ini b/tox.ini
index cb12dee267bec34e308b81fd62d2a9b731625d1c..6cac4565303bd8f0a08b1dec023c5582e7d7f57a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -8,7 +8,7 @@ setenv =
     BRANCH_NAME=master
 install_command = pip install {opts} {packages}
 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/pike}
   -r{toxinidir}/test-requirements.txt
 commands = python setup.py testr --slowest --testr-args='{posargs}'