diff --git a/passepartout b/passepartout
index d28e112..9ea8b42 100755
--- a/passepartout
+++ b/passepartout
@@ -409,6 +409,8 @@ LISPEOF
         # Export terminal dimensions — bash sets COLUMNS/LINES but
         # doesn't export them to subprocesses by default.
         export COLUMNS LINES
+        # Clear stale cl-tty cache to ensure latest backend-size fixes
+        find ~/.cache/common-lisp -name "*.fasl" -path "*cl-tty*" -delete 2>/dev/null
         exec sbcl --noinform --load /tmp/tui-load.lisp
         ;;
     gateway)