diff --git a/doc/conf.py b/doc/conf.py
index e1a48aa20..be79c8f9b 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -6,7 +6,8 @@ import sys, os, re
 
 # Add any Sphinx extension module names here, as strings. They can be extensions
 # coming with Sphinx (named 'sphinx.addons.*') or your custom ones.
-extensions = ['sphinx.ext.autodoc', 'sphinx.ext.doctest', 'sphinx.ext.todo']
+extensions = ['sphinx.ext.autodoc', 'sphinx.ext.doctest', 'sphinx.ext.todo',
+              'sphinx.ext.autosummary']
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']