--- a/doc/conf.py
+++ b/doc/conf.py
@@ -61,7 +61,7 @@
 
 intersphinx_mapping = {
     'gpaw': ('https://gpaw.readthedocs.io', None),
-    'python': ('https://docs.python.org/3.10', None),
+    'python': ('https://docs.python.org/3.10', ('/usr/share/doc/python3/html/objects.inv', None)),
 }
 
 # Avoid GUI windows during doctest: