diff --git a/tox.ini b/tox.ini
index aebfd8c2..da460977 100644
--- a/tox.ini
+++ b/tox.ini
@@ -13,7 +13,7 @@ setenv = VIRTUAL_ENV={envdir}
 usedevelop = True
 install_command = pip install {opts} {packages}
 deps =
-       -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
+       -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/yoga}
        -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
 allowlist_externals = sh
@@ -48,7 +48,7 @@ commands =
 
 [testenv:docs]
 deps =
-    -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
+    -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/yoga}
     -r{toxinidir}/doc/requirements.txt
 commands = sphinx-build -a -E -W -d doc/build/doctrees -b html doc/source doc/build/html