diff --git a/sensible.tmux b/sensible.tmux
index 5cf2af6..a0a0793 100755
--- a/sensible.tmux
+++ b/sensible.tmux
@@ -67,6 +67,9 @@ key_binding_not_changed() {
 main() {
 	# OPTIONS
 
+	# enable renumbering of windows
+	tmux set-option -g renumber-windows on
+
 	# enable utf8 (option removed in tmux 2.2)
 	tmux set-option -g utf8 on 2>/dev/null