diff --git a/tox.ini b/tox.ini
index 097a9949..54f80332 100644
--- a/tox.ini
+++ b/tox.ini
@@ -10,7 +10,7 @@ setenv =
   LANG=en_US.utf-8
   VIRTUAL_ENV={envdir}
 
-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/2024.1}
        -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
 commands = sh -c '(find . -not \( -type d -name .?\* -prune \) \
@@ -60,7 +60,7 @@ commands =
 
 [testenv:docs]
 usedevelop = False
-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/2024.1}
        -r{toxinidir}/doc/requirements.txt
 commands=
     sphinx-build -W -b html doc/source doc/build/html -W