diff --git a/tox.ini b/tox.ini
index 88e81fe9..1ec85cdb 100644
--- a/tox.ini
+++ b/tox.ini
@@ -13,7 +13,7 @@ setenv =
   OS_STDERR_CAPTURE={env:OS_STDERR_CAPTURE:1}
   OS_TEST_TIMEOUT={env:OS_TEST_TIMEOUT:60}
 deps =
-  -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
+  -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/xena}
   -r{toxinidir}/test-requirements.txt
   -r{toxinidir}/requirements.txt
   -r{toxinidir}/doc/requirements.txt
@@ -45,7 +45,7 @@ commands = {posargs}
 [testenv:docs]
 whitelist_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/xena}
   -r{toxinidir}/doc/requirements.txt
 commands =
   rm -fr doc/build