diff --git a/requirements.txt b/requirements.txt
index 24e3c9b..4d081eb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,4 @@
 pbr>=2.0.0,!=2.1.0 # Apache-2.0
 openstackdocstheme>=1.20.0 # Apache-2.0
-sphinx!=1.6.6,!=1.6.7,>=1.6.2,<2.0.0;python_version=='2.7'  # BSD
 sphinx!=1.6.6,!=1.6.7,>=1.6.2;python_version>='3.4'  # BSD
 yasfb>=0.5.1
diff --git a/tox.ini b/tox.ini
index e463a13..57bda68 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,6 +4,7 @@ envlist = docs
 skipsdist = True
 
 [testenv]
+basepython = python3
 usedevelop = True
 setenv =
   VIRTUAL_ENV={envdir}
@@ -12,11 +13,9 @@ deps =
   -r{toxinidir}/requirements.txt
 
 [testenv:venv]
-basepython = python3
 commands = {posargs}
 
 [testenv:docs]
-basepython = python3
 commands =
   /bin/rm -fr doc/build/
   sphinx-build -W -b html doc/source doc/build/html