diff --git a/doc/source/conf.py b/doc/source/conf.py
index 2809221fb..6563ea98e 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -309,4 +309,4 @@ def write_section(specsection, secname, key, comment, output):
 
 
 # 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)}