--- a/docs/conf.py	2019-02-14 15:06:58.494409885 -0800

+++ b/docs/conf.py	2019-02-14 15:07:18.862800941 -0800

@@ -11,7 +11,7 @@

     'sphinx.ext.coverage',

     'sphinx.ext.ifconfig',

     'sphinx.ext.viewcode',

-    'sphinxcontrib.napoleon'

+    'sphinx.ext.napoleon'

 ]

 if os.getenv('SPELLCHECK'):

     extensions += 'sphinxcontrib.spelling',