diff --git a/collects/repos-time-stamp/stamp.ss b/collects/repos-time-stamp/stamp.ss
index c166fc2248..47c770a8ec 100644
--- a/collects/repos-time-stamp/stamp.ss
+++ b/collects/repos-time-stamp/stamp.ss
@@ -1 +1 @@
-#lang scheme/base (provide stamp) (define stamp "12dec2007")
+#lang scheme/base (provide stamp) (define stamp "13dec2007")