diff --git a/tox.ini b/tox.ini
index 3200072a863..9fd7f602cb8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -14,7 +14,7 @@ setenv = VIRTUAL_ENV={envdir}
 passenv = TRACE_FAILONLY GENERATE_HASHES http_proxy HTTP_PROXY https_proxy HTTPS_PROXY no_proxy NO_PROXY TOX_ENV_SRC_MODULES
 usedevelop = True
 deps =
-  -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
+  -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/ussuri}
   -r{toxinidir}/requirements.txt
   -r{toxinidir}/test-requirements.txt
 whitelist_externals = sh
@@ -131,7 +131,7 @@ commands = {posargs}
 [testenv:docs]
 envdir = {toxworkdir}/docs
 deps =
-  -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
+  -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/ussuri}
   -r{toxinidir}/doc/requirements.txt
   -r{toxinidir}/requirements.txt
 commands = sphinx-build -W -b html doc/source doc/build/html