diff --git a/docs/conf.py b/docs/conf.py
index d2c6927..6ea10fc 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -24,7 +24,13 @@ import datetime
 
 html_last_updated_fmt = "%Y-%m-%d %H:%M:%S"
 
-extensions = ['juliadoc.julia', 'juliadoc.jlhelp']
+extensions = ['sphinx.ext.autodoc',
+              'sphinx.ext.doctest',
+              'sphinx.ext.coverage',
+              'sphinx.ext.viewcode',
+              'juliadoc.julia',
+              'juliadoc.jlhelp',
+              'numpydoc']
 html_theme_path = [juliadoc.get_theme_dir(), sphinx_rtd_theme.get_html_theme_path()]
 html_sidebars = juliadoc.default_sidebars()