diff --git a/docs/guide/conf.py b/docs/guide/conf.py
index 9639b4f..aac7adb 100644
--- a/docs/guide/conf.py
+++ b/docs/guide/conf.py
@@ -37,7 +37,7 @@
     'sphinx.ext.mathjax',
     'sphinx.ext.viewcode',
     'sphinx.ext.githubpages',
-    'sphinxcontrib.napoleon',
+    'sphinx.ext.napoleon',
     ]
 
 # Add any paths that contain templates here, relative to this directory.