diff --git a/tox.ini b/tox.ini
index 7814fe3..fa541ed 100644
--- a/tox.ini
+++ b/tox.ini
@@ -13,7 +13,7 @@ setenv =
   NOSE_OPENSTACK_SHOW_ELAPSED=1
   PYTHONWARNINGS=default::DeprecationWarning
 deps =
-  -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
+  -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/2023.1}
   -r{toxinidir}/requirements.txt
   -r{toxinidir}/test-requirements.txt
 commands =
@@ -85,7 +85,7 @@ basepython = python3
 allowlist_externals =
   rm
 deps =
-  -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
+  -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/2023.1}
   -r{toxinidir}/doc/requirements.txt
 commands=
   rm -rf doc/build