diff --git a/tox.ini b/tox.ini
index bcd18d9..ac5fe53 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,8 +4,10 @@ skipsdist = True
 
 [testenv]
 usedevelop = True
-deps = -r{toxinidir}/requirements.txt
-       -r{toxinidir}/test-requirements.txt
+deps =
+  -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
+  -r{toxinidir}/requirements.txt
+  -r{toxinidir}/test-requirements.txt
 commands = adjutant-api test {posargs}
 setenv = VIRTUAL_ENV={envdir}
 
@@ -34,7 +36,9 @@ commands = {posargs}
 
 [testenv:docs]
 basepython = python3
-deps = -r{toxinidir}/doc/requirements.txt
+deps =
+  -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
+  -r{toxinidir}/doc/requirements.txt
 commands =
     sphinx-build -W -b html -d doc/build/doctrees doc/source doc/build/html