diff --git a/tox.ini b/tox.ini
index 889d9c9..8fab5fe 100644
--- a/tox.ini
+++ b/tox.ini
@@ -11,7 +11,7 @@ setenv = VIRTUAL_ENV={envdir}
          OS_STDERR_CAPTURE=1
          OS_TEST_TIMEOUT=60
 deps =
-  -c{env:UPPER_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/upper-constraints.txt}
+  -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
   -r{toxinidir}/test-requirements.txt
   -r{toxinidir}/requirements.txt
 commands = stestr run {posargs}
@@ -48,7 +48,7 @@ commands = oslo_debug_helper -t osc_lib/tests {posargs}
 [testenv:docs]
 basepython = python3
 deps =
-  -c{env:UPPER_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/upper-constraints.txt}
+  -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
   -r{toxinidir}/requirements.txt
   -r{toxinidir}/doc/requirements.txt
 commands =