diff --git a/doc/requirements.txt b/doc/requirements.txt
new file mode 100644
index 0000000..5470738
--- /dev/null
+++ b/doc/requirements.txt
@@ -0,0 +1,3 @@
+reno>=3.1.0 # Apache-2.0
+sphinx>=2.0.0,!=2.1.0 # BSD
+openstackdocstheme>=2.2.1 # Apache-2.0
diff --git a/test-requirements.txt b/test-requirements.txt
index a64165a..7eb8bcd 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -10,10 +10,7 @@
 hacking>=3.0.1,<3.1 # Apache-2.0
 coverage>=4.0 # Apache-2.0
 nodeenv>=0.9.4 # BSD
-reno>=3.1.0 # Apache-2.0
 selenium>=2.50.1 # Apache-2.0
-sphinx>=2.0.0,!=2.1.0 # BSD
 testtools>=1.4.0 # MIT
 # This also needs xvfb library installed on your OS
 xvfbwrapper>=0.1.3 #license: MIT
-openstackdocstheme>=2.2.1 # Apache-2.0
diff --git a/tox.ini b/tox.ini
index d314e8a..a4b0a62 100644
--- a/tox.ini
+++ b/tox.ini
@@ -47,6 +47,8 @@ commands =
   npm run {posargs:test}
 
 [testenv:docs]
+deps = -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
+       -r{toxinidir}/doc/requirements.txt
 commands =
   sphinx-build -W -b html doc/source doc/build/html