diff --git a/doc/source/conf.py b/doc/source/conf.py
index 456d62a6a4d0b706c0e66e832fc39ef152e5b5fd..09241b280e04b4a8c2cc95964720c1ccfd55732c 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -264,4 +264,4 @@ texinfo_documents = [
 
 
 # Example configuration for intersphinx: refer to the Python standard library.
-intersphinx_mapping = {'http://docs.python.org/': None}
+intersphinx_mapping = {'python': ('http://docs.python.org/3', None)}