diff --git a/TODO b/TODO
index 632ca4ee..2479cf53 100644
--- a/TODO
+++ b/TODO
@@ -155,6 +155,8 @@ TMUX UI ISSUES
   subset of copy-mode in that it inherits key-bindings and other traits but
   not all.
 - add -c for new-session like new-window
+- flag to choose-* for sort order (eg sort windows/sessions/clients by last
+  used time) - perhaps using formats (but what about numeric sort)?
 
 TERMINAL ISSUES
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