diff -r 35ecaa999a12 -r 7df9ae38c75c mercurial/help.py
--- a/mercurial/help.py	Fri Aug 17 19:18:53 2018 -0700
+++ b/mercurial/help.py	Thu Sep 06 21:55:30 2018 +0900
@@ -219,6 +219,8 @@
      loaddoc('revlogs', subdir='internals')),
     (['wireprotocol'], _('Wire Protocol'),
      loaddoc('wireprotocol', subdir='internals')),
+    (['wireprotocolv2'], _('Wire Protocol Version 2'),
+     loaddoc('wireprotocolv2', subdir='internals')),
 ])
 
 def internalshelp(ui):