diff --git a/.zuul.yaml b/.zuul.yaml
index 9030e596..a8ac04d2 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -19,3 +19,5 @@
       jobs:
         - blazar-tempest-plugin-base
         - blazar-tempest-plugin-ipv6-only
+        - openstack-tox-lower-constraints:
+            voting: false
diff --git a/doc/requirements.txt b/doc/requirements.txt
index 7af6a330..8a395394 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -3,3 +3,5 @@ reno>=3.1.0 # Apache-2.0
 sphinx>=2.0.0,!=2.1.0 # BSD
 openstackdocstheme>=2.2.1 # Apache-2.0
 os-api-ref>=1.4.0 # Apache-2.0
+oslo.config>=6.8.0 # Apache-2.0
+oslo.policy>=3.6.0 # Apache-2.0
diff --git a/tox.ini b/tox.ini
index 2b1cd66c..64d111cb 100644
--- a/tox.ini
+++ b/tox.ini
@@ -33,12 +33,14 @@ commands =
   coverage report
 
 [testenv:pep8]
+skip_install = True
 commands = flake8 {posargs}
 
 [testenv:venv]
 commands = {posargs}
 
 [testenv:docs]
+skip_install = True
 deps = -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/xena}
        -r{toxinidir}/doc/requirements.txt
 commands =
@@ -47,6 +49,7 @@ commands =
     sphinx-build -W -b html doc/source doc/build/html
 
 [testenv:pdf-docs]
+skip_install = True
 deps = {[testenv:docs]deps}
 allowlist_externals = make
 commands =