diff --git a/.zuul.yaml b/.zuul.yaml
index 949ad2f..089ba6e 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -84,7 +84,7 @@
         # Use Member for py3 because arguably negative testing is more
         # important than admin, which is already covered by patrole-admin job.
         RBAC_TEST_ROLE: Member
-        USE_PYTHON3: True
+        USE_PYTHON3: true
       devstack_services:
         s-account: false
         s-container: false
@@ -101,8 +101,10 @@
         - patrole-py35-member
         - patrole-multinode-admin
         - patrole-multinode-member
+        - openstack-tox-lower-constraints
     gate:
       jobs:
         - patrole-admin
         - patrole-member
         - patrole-py35-member
+        - openstack-tox-lower-constraints
diff --git a/lower-constraints.txt b/lower-constraints.txt
new file mode 100644
index 0000000..a5ff1ca
--- /dev/null
+++ b/lower-constraints.txt
@@ -0,0 +1,84 @@
+alabaster==0.7.10
+appdirs==1.4.3
+asn1crypto==0.24.0
+Babel==2.5.3
+bcrypt==3.1.4
+certifi==2018.1.18
+cffi==1.11.5
+chardet==3.0.4
+cliff==2.11.0
+cmd2==0.8.1
+coverage==4.5.1
+cryptography==2.1.4
+debtcollector==1.19.0
+docutils==0.14
+dulwich==0.19.0
+extras==1.0.0
+fasteners==0.14.1
+fixtures==3.0.0
+flake8==2.5.5
+future==0.16.0
+hacking==1.0.0
+idna==2.6
+imagesize==1.0.0
+iso8601==0.1.12
+Jinja2==2.10
+jsonschema==2.6.0
+keystoneauth1==3.4.0
+linecache2==1.0.0
+MarkupSafe==1.0
+mccabe==0.2.1
+mock==2.0.0
+monotonic==1.4
+mox3==0.25.0
+msgpack==0.5.6
+netaddr==0.7.19
+netifaces==0.10.6
+nose==1.3.7
+nosexcover==1.0.11
+openstackdocstheme==1.20.0
+os-client-config==1.29.0
+oslo.concurrency==3.26.0
+oslo.config==5.2.0
+oslo.context==2.20.0
+oslo.i18n==3.20.0
+oslo.log==3.37.0
+oslo.policy==1.34.0
+oslo.serialization==2.25.0
+oslo.utils==3.36.0
+oslotest==3.3.0
+paramiko==2.4.1
+pbr==3.1.1
+pep8==1.5.7
+prettytable==0.7.2
+pyasn1==0.4.2
+pycparser==2.18
+pyflakes==0.8.1
+Pygments==2.2.0
+pyinotify==0.9.6
+PyNaCl==1.2.1
+pyparsing==2.2.0
+pyperclip==1.6.0
+python-dateutil==2.7.0
+python-mimeparse==1.6.0
+python-subunit==1.2.0
+pytz==2018.3
+PyYAML==3.12
+reno==2.7.0
+requests==2.18.4
+requestsexceptions==1.4.0
+rfc3986==1.1.0
+six==1.11.0
+snowballstemmer==1.2.1
+Sphinx==1.6.5
+sphinxcontrib-websupport==1.0.1
+stestr==2.0.0
+stevedore==1.28.0
+tempest==18.0.0
+testrepository==0.0.20
+testtools==2.3.0
+traceback2==1.4.0
+unittest2==1.1.0
+urllib3==1.22
+voluptuous==0.11.1
+wrapt==1.10.11
diff --git a/tox.ini b/tox.ini
index d5e3b91..3c2c8ad 100644
--- a/tox.ini
+++ b/tox.ini
@@ -78,3 +78,10 @@
 
 [hacking]
 local-check-factory = patrole_tempest_plugin.hacking.checks.factory
+
+[testenv:lower-constraints]
+basepython = python3
+deps =
+  -c{toxinidir}/lower-constraints.txt
+  -r{toxinidir}/test-requirements.txt
+  -r{toxinidir}/requirements.txt