diff --git a/docs/src/conf.py b/docs/src/conf.py
index da943a98f9..a005ea5e76 100644
--- a/docs/src/conf.py
+++ b/docs/src/conf.py
@@ -27,7 +27,7 @@
 # coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
 extensions = [
     'sphinx.ext.autodoc',
-    'sphinxcontrib.napoleon',
+    'sphinx.ext.napoleon',
     'sphinx.ext.imgmath',
     'sphinxcontrib.programoutput',
     'sphinx_gallery.gen_gallery',