diff --git a/tox.ini b/tox.ini
index 8b1e812..90345ef 100644
--- a/tox.ini
+++ b/tox.ini
@@ -8,7 +8,7 @@ ignore_basepython_conflict = True
 basepython = python3
 usedevelop = False
 install_command =
-    pip install -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master} {opts} {packages}
+    pip install -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/yoga} {opts} {packages}
 commands =
     /usr/bin/find . -type f -name "*.pyc" -delete
 passenv =