diff --git a/doc/requirements.txt b/doc/requirements.txt
new file mode 100644
index 0000000..5f0bf6a
--- /dev/null
+++ b/doc/requirements.txt
@@ -0,0 +1,3 @@
+sphinx!=1.6.6,!=1.6.7,>=1.6.2 # BSD
+openstackdocstheme>=1.31.2 # Apache-2.0
+reno>=2.5.0 # Apache-2.0
diff --git a/test-requirements.txt b/test-requirements.txt
index cf025c3..e422e93 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -6,11 +6,8 @@
 
 coverage!=4.4,>=4.0 # Apache-2.0
 python-subunit>=1.0.0 # Apache-2.0/BSD
-sphinx!=1.6.6,!=1.6.7,>=1.6.2 # BSD
 oslotest>=3.2.0 # Apache-2.0
 stestr>=1.0.0 # Apache-2.0
 testtools>=2.2.0 # MIT
-openstackdocstheme>=1.31.2 # Apache-2.0
 # releasenotes
-reno>=2.5.0 # Apache-2.0
 flake8-import-order
diff --git a/tox.ini b/tox.ini
index 5cb26a3..8e6b2bf 100644
--- a/tox.ini
+++ b/tox.ini
@@ -31,9 +31,12 @@
 commands = {posargs}
 
 [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
 
 [testenv:releasenotes]
+deps = {[testenv:docs]deps}
 commands =
   sphinx-build -a -E -W -d releasenotes/build/doctrees -b html releasenotes/source releasenotes/build/html