diff --git a/doc/conf.py b/doc/conf.py
index 223b201..6e4164d 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -216,6 +216,9 @@
      [u'parcouss'], 1)
 ]
 
+# -- Options for intersphinx extension ---------------------------------------
+# https://www.sphinx-doc.org/en/master/usage/extensions/intersphinx.html#configuration
 
-# Example configuration for intersphinx: refer to the Python standard library.
-intersphinx_mapping = {'http://docs.python.org/': None}
+intersphinx_mapping = {
+    'python': ('https://docs.python.org/3', None),
+}