diff --git a/tox.ini b/tox.ini
index 811ccd30..f3d211b2 100644
--- a/tox.ini
+++ b/tox.ini
@@ -8,7 +8,7 @@ setenv =
     BRANCH_NAME=master
     CLIENT_NAME=oslo.service
 deps =
-  -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
+  -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/2024.1}
   -r{toxinidir}/test-requirements.txt
   -r{toxinidir}/requirements.txt
 allowlist_externals = find
@@ -29,7 +29,7 @@ commands = {posargs}
 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/2024.1}
   -r{toxinidir}/doc/requirements.txt
   fixtures>=3.0.0 # Apache-2.0/BSD
 commands =
@@ -65,7 +65,7 @@ commands = oslo_debug_helper -t oslo_service/tests {posargs}
 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/2024.1}
   -r{toxinidir}/doc/requirements.txt
 commands =
   rm -rf releasenotes/build