diff --git a/doc/requirements.txt b/doc/requirements.txt
new file mode 100644
index 0000000..b3abbc3
--- /dev/null
+++ b/doc/requirements.txt
@@ -0,0 +1,10 @@
+# The order of packages is significant, because pip processes them in the order
+# of appearance. Changing the order has an impact on the overall integration
+# process, which may cause wedges in the gate later.
+
+# this is required for the docs build jobs
+sphinx!=1.6.6,!=1.6.7,>=1.6.2 # BSD
+openstackdocstheme>=1.18.1 # Apache-2.0
+reno>=2.5.0 # Apache-2.0
+sphinxmark>=0.1.14 # Apache-2.0
+doc8>=0.6.0 # Apache-2.0
diff --git a/test-requirements.txt b/test-requirements.txt
index 73f2df7..cb900d7 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -3,14 +3,7 @@
 # process, which may cause wedges in the gate later.
 bashate>=0.5.1 # Apache-2.0
 flake8<2.6.0,>=2.5.4 # MIT
-pyasn1!=0.2.3,>=0.1.8 # BSD
+pyasn1>=0.1.8 # BSD
 pyOpenSSL>=16.2.0 # Apache-2.0
 requests>=2.14.2 # Apache-2.0
 ndg-httpsclient>=0.4.2;python_version<'3.0' # BSD
-
-# this is required for the docs build jobs
-sphinx>=1.6.2 # BSD
-openstackdocstheme>=1.17.0 # Apache-2.0
-doc8>=0.6.0 # Apache-2.0
-reno>=2.5.0 # Apache-2.0
-sphinxmark>=0.1.14 # Apache-2.0
diff --git a/tox.ini b/tox.ini
index 54eb448..fdbe5f3 100644
--- a/tox.ini
+++ b/tox.ini
@@ -32,10 +32,11 @@ setenv =
 
 
 [testenv:docs]
+deps = -r{toxinidir}/doc/requirements.txt
 commands=
     bash -c "rm -rf doc/build"
     doc8 doc
-    python setup.py build_sphinx
+    sphinx-build -b html doc/source doc/build/html
 
 
 [doc8]
@@ -44,6 +45,7 @@ extensions = .rst
 
 
 [testenv:releasenotes]
+deps = -r{toxinidir}/doc/requirements.txt
 commands =
     sphinx-build -a -E -W -d releasenotes/build/doctrees -b html releasenotes/source releasenotes/build/html
 
@@ -103,6 +105,7 @@ commands =
 
 [testenv:linters]
 deps =
+    -r{toxinidir}/doc/requirements.txt
     {[testenv:ansible]deps}
 commands =
     {[testenv:pep8]commands}