diff --git a/scripts/pnglibconf.h.prebuilt b/scripts/pnglibconf.h.prebuilt
index 7abce4811..d39a89ae3 100644
--- a/scripts/pnglibconf.h.prebuilt
+++ b/scripts/pnglibconf.h.prebuilt
@@ -2,7 +2,7 @@
 
 /* pnglibconf.h - library build configuration */
 
-/* Libpng version 1.7.0beta70 - November 24, 2015 */
+/* Libpng version 1.7.0beta70 - November 30, 2015 */
 
 /* Copyright (c) 1998-2015 Glenn Randers-Pehrson */