diff --git a/doc/README b/doc/README
index 2a525bb..2c6359c 100644
--- a/doc/README
+++ b/doc/README
@@ -1,4 +1,4 @@
 This is the pyOpenSSL documentation source.  It uses Sphinx.  To build the
-documentation, install Sphinx 1.0 and run:
+documentation, install Sphinx and run:
 
     $ make html
diff --git a/doc/conf.py b/doc/conf.py
index 8277202..5d34ae7 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -121,7 +121,12 @@
 
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
-html_theme = 'classic'
+on_rtd = os.environ.get('READTHEDOCS', None) == 'True'
+
+if not on_rtd:  # only import and set the theme if we're building docs locally
+    import sphinx_rtd_theme
+    html_theme = 'sphinx_rtd_theme'
+    html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
 
 # Theme options are theme-specific and customize the look and feel of a theme
 # further.  For a list of options available for each theme, see the
diff --git a/doc/index.rst b/doc/index.rst
index e4a5a23..7006ec6 100644
--- a/doc/index.rst
+++ b/doc/index.rst
@@ -23,4 +23,3 @@
 * :ref:`genindex`
 * :ref:`modindex`
 * :ref:`search`
-
diff --git a/docs-requirements.txt b/docs-requirements.txt
new file mode 100644
index 0000000..8213302
--- /dev/null
+++ b/docs-requirements.txt
@@ -0,0 +1,2 @@
+sphinx
+sphinx_rtd_theme
diff --git a/tox.ini b/tox.ini
index 61e8797..0d6c76a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -45,8 +45,7 @@
     check-manifest
 
 [testenv:docs]
-deps =
-     sphinx
+deps = -rdocs-requirements.txt
 basepython = python2.7
 commands =
      sphinx-build -W -b html doc doc/_build/html