diff --git a/docs/source/conf.py b/docs/source/conf.py
index 5740286..19c764d 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -37,7 +37,6 @@ extensions = [
     'sphinx.ext.intersphinx',
     'sphinx.ext.mathjax',
     'sphinx.ext.viewcode',
-    'numpydoc',
     'sphinx_copybutton',
 ]