diff --git a/collects/meta/props b/collects/meta/props
index cf3944178b..2e191322a8 100755
--- a/collects/meta/props
+++ b/collects/meta/props
@@ -1398,7 +1398,7 @@ path/s is either such a string or a list of them.
 "collects/tests/racket/stress/contract-lifting.rkt" responsible (robby sstrickl)
 "collects/tests/racket/stress/dict.rkt" drdr:timeout 180
 "collects/tests/racket/stress/fuzz.rkt" responsible (samth mflatt) drdr:command-line (racket * "-c") drdr:timeout 300 drdr:random #t
-"collects/tests/racket/stress/module-stack.rkt" drdr:timeout 240
+"collects/tests/racket/stress/module-stack.rkt" drdr:timeout 500
 "collects/tests/racket/sync.rktl" drdr:command-line #f
 "collects/tests/racket/syntax.rktl" drdr:command-line #f
 "collects/tests/racket/thread.rktl" drdr:command-line #f