1 files changed, 1 insertions, 1 deletions
diff --git a/tox.ini b/tox.ini
index 175a9c94..86e7ce8a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -13,7 +13,7 @@ setenv = VIRTUAL_ENV={envdir}
 
 usedevelop = True
 install_command = pip install \
-                  -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master} \
+                  -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/wallaby} \
                   -U {opts} {packages}
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt