diff --git a/tox.ini b/tox.ini
index fafff8f5..d7e63715 100644
--- a/tox.ini
+++ b/tox.ini
@@ -12,7 +12,7 @@ setenv =
   OS_STDERR_CAPTURE={env:OS_STDERR_CAPTURE:1}
   OS_TEST_TIMEOUT={env:OS_TEST_TIMEOUT:60}
 deps =
-  -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt}
+  -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
   -r{toxinidir}/test-requirements.txt
   -r{toxinidir}/requirements.txt
   -r{toxinidir}/doc/requirements.txt