diff --git a/.zuul.yaml b/.zuul.yaml
index f3848fb..9919896 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -3,7 +3,7 @@
       - openstack-specs-jobs
     check:
       jobs:
-        - openstack-tox-py27
+        - openstack-tox-py37
     gate:
       jobs:
-        - openstack-tox-py27
+        - openstack-tox-py37
diff --git a/doc/source/conf.py b/doc/source/conf.py
index aefe838..9ff09d6 100755
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -23,7 +23,7 @@ sys.path.insert(0, os.path.abspath('../..'))
 extensions = [
     'sphinx.ext.autodoc',
     #'sphinx.ext.intersphinx',
-    'oslosphinx',
+    'openstackdocstheme',
     'yasfb',
 ]
 
@@ -75,7 +75,7 @@ pygments_style = 'sphinx'
 # html_theme_path = ["."]
 # html_theme = '_theme'
 # html_static_path = ['static']
-html_theme_options = {}
+html_theme = "openstackdocs"
 
 # Output file base name for HTML help builder.
 htmlhelp_basename = '%sdoc' % project
diff --git a/requirements.txt b/requirements.txt
index c8aeae6..99d52a2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 pbr>=0.6,<1.0
-oslosphinx>=2.2.0.0a2
-sphinx>=1.1.2,<1.2
-yasfb>=0.5.1
+openstackdocstheme
+sphinx!=1.6.6,!=1.6.7,!=2.1.0,>=1.6.2;python_version>='3.4' # BSD
+yasfb>=0.8.0
 testrepository>=0.0.18
 testtools>=0.9.34
 stestr>=2.0.0
diff --git a/tests/test_title.py b/tests/test_title.py
index 2031c82..8dbab25 100644
--- a/tests/test_title.py
+++ b/tests/test_title.py
@@ -41,7 +41,7 @@ class TestTitles(testtools.TestCase):
 
     def _check_titles(self, spec, titles):
         self.assertTrue(len(titles) >= 4,
-                         "Titles count in '%s' doesn't match expected" % spec)
+                        "Titles count in '%s' doesn't match expected" % spec)
         problem = 'Problem description'
         driver = 'Driver description'
         self.assertTrue(problem in titles or driver in titles)
@@ -84,7 +84,7 @@ class TestTitles(testtools.TestCase):
     def test_template(self):
         # NOTE (e0ne): adding 'template.rst' to ignore dirs to exclude it from
         # os.listdir output
-        ignored_dirs = {'template.rst', 'api',}
+        ignored_dirs = {'template.rst', 'api'}
 
         files = ['specs/template.rst']
 
diff --git a/tox.ini b/tox.ini
index e951d81..f0f255a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,9 +1,10 @@
 [tox]
 minversion = 1.6
-envlist = docs,py27,pep8
+envlist = docs,pep8
 skipsdist = True
 
 [testenv]
+basepython = python3
 usedevelop = True
 install_command = pip install -U {opts} {packages}
 setenv =
@@ -13,11 +14,9 @@ deps = -r{toxinidir}/requirements.txt
 commands = stestr run --slowest {posargs}
 
 [testenv:venv]
-basepython = python3
 commands = {posargs}
 
 [testenv:docs]
-basepython = python3
 commands = python setup.py build_sphinx
 
 [testenv:spelling]
@@ -28,7 +27,6 @@ deps =
 commands = sphinx-build -b spelling doc/source doc/build/spelling
 
 [testenv:cover]
-basepython = python3
 setenv =
     PYTHON=coverage run --source specs --parallel-mode
 commands =
@@ -38,7 +36,6 @@ commands =
     coverage xml -o cover/coverage.xml
 
 [testenv:pep8]
-basepython = python3
 commands = flake8
 
 [flake8]