diff --git a/collects/meta/props b/collects/meta/props
index b22d672878..0d4ab14598 100755
--- a/collects/meta/props
+++ b/collects/meta/props
@@ -1825,8 +1825,11 @@ path/s is either such a string or a list of them.
 "collects/unstable" responsible (jay samth cce ryanc)
 "collects/unstable/byte-counting-port.rkt" responsible (jay)
 "collects/unstable/debug.rkt" responsible (samth)
+"collects/unstable/gui/language-level.rkt" drdr:command-line (gracket-text "-t" *)
 "collects/unstable/gui/notify.rkt" drdr:command-line (gracket-text "-t" *)
 "collects/unstable/gui/prefs.rkt" drdr:command-line (gracket-text "-t" *)
+"collects/unstable/gui/slideshow.rkt" drdr:command-line (gracket-text "-t" *)
+"collects/unstable/gui/window.rkt" drdr:command-line (gracket-text "-t" *)
 "collects/unstable/hash.rkt" responsible (samth)
 "collects/unstable/match.rkt" responsible (samth)
 "collects/unstable/mutated-vars.rkt" responsible (samth)