--- a/tests/test-help.t	Mon Sep 24 19:23:50 2018 +0900
+++ b/tests/test-help.t	Wed Aug 08 23:17:16 2018 -0700
@@ -942,6 +942,8 @@
    debugindex    dump index data for a storage primitive
    debugindexdot
                  dump an index DAG as a graphviz dot file
+   debugindexstats
+                 show stats related to the changelog index
    debuginstall  test Mercurial installation
    debugknown    test whether node ids are known to a repo
    debuglocks    show or modify state of locks