diff -r c7f213d7f4d2 -r 2fe21c65777e mercurial/help.py
--- a/mercurial/help.py	Mon Sep 03 13:56:53 2018 +0300
+++ b/mercurial/help.py	Tue Aug 28 20:27:36 2018 -0700
@@ -205,6 +205,8 @@
      loaddoc('bundle2', subdir='internals')),
     (['bundles'], _('Bundles'),
      loaddoc('bundles', subdir='internals')),
+    (['cbor'], _('CBOR'),
+     loaddoc('cbor', subdir='internals')),
     (['censor'], _('Censor'),
      loaddoc('censor', subdir='internals')),
     (['changegroups'], _('Changegroups'),