diff -r f2fe7b199bb4 -r 045fe7042510 mercurial/help.py
--- a/mercurial/help.py	Sun Mar 13 01:59:18 2016 +0530
+++ b/mercurial/help.py	Sat Mar 12 18:51:07 2016 -0800
@@ -188,6 +188,8 @@
      loaddoc('bundles', subdir='internals')),
     (['changegroups'], _('representation of revlog data'),
      loaddoc('changegroups', subdir='internals')),
+    (['requirements'], _('repository requirements'),
+     loaddoc('requirements', subdir='internals')),
     (['revlogs'], _('revision storage mechanism'),
      loaddoc('revlogs', subdir='internals')),
 ])