diff --git a/tox.ini b/tox.ini
index d143222d..c22ac311 100644
--- a/tox.ini
+++ b/tox.ini
@@ -15,7 +15,7 @@ setenv =
   NOSE_OPENSTACK_RED=0.05
   NOSE_OPENSTACK_YELLOW=0.025
   NOSE_OPENSTACK_SHOW_ELAPSED=1
-deps = -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
+deps = -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/2023.1}
        -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
 commands =
@@ -45,7 +45,7 @@ commands =
   coverage html
 
 [testenv:docs]
-deps = -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
+deps = -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/2023.1}
        -r{toxinidir}/doc/requirements.txt
 commands = sphinx-build -W -b html doc/source doc/build/html