diff --git a/TODO b/TODO
index 63db4112..30b3c6d5 100644
--- a/TODO
+++ b/TODO
@@ -165,5 +165,6 @@ For 1.4 (not in order):
 28 "monitor for silence" option
 29 support "xterm2" mouse mode
 30 respawn-pane command
+31 configurable borders and empty space filler for when panes < window
 ...