diff --git a/collects/repos-time-stamp/stamp.ss b/collects/repos-time-stamp/stamp.ss
index 18998793d8..45747ae6dc 100644
--- a/collects/repos-time-stamp/stamp.ss
+++ b/collects/repos-time-stamp/stamp.ss
@@ -1 +1 @@
-#lang scheme/base (provide stamp) (define stamp "30jul2009")
+#lang scheme/base (provide stamp) (define stamp "31jul2009")