diff --git a/ANNOUNCE b/ANNOUNCE
index 2fb413e3..e2b43b9d 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -43,7 +43,8 @@ Other information:
 
 Changes since the last public release (1.2.38):
 
-versions 1.2.39beta01 [July 23, 2009]
+version 1.2.39beta01 [July 23, 2009]
+  Added a prototype for png_64bit_product() in png.c
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 
diff --git a/CHANGES b/CHANGES
index 073e58ca..af2cbd11 100644
--- a/CHANGES
+++ b/CHANGES
@@ -2432,7 +2432,8 @@ version 1.2.38rc03 [July 11, 2009]
 version 1.0.47 and 1.2.38 [July 16, 2009]
   No changes.
 
-versions 1.2.39beta01 [July 23, 2009]
+version 1.2.39beta01 [July 23, 2009]
+  Added a prototype for png_64bit_product() in png.c
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
diff --git a/png.c b/png.c
index ecad4898..b1fc8ce6 100644
--- a/png.c
+++ b/png.c
@@ -1,7 +1,7 @@
 
 /* png.c - location for general purpose libpng functions
  *
- * Last changed in libpng 1.2.37 [June 4, 2009]
+ * Last changed in libpng 1.2.39 [July 23, 2009]
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)