diff --git a/INSTALL b/INSTALL
index 9d2a3d2..e19f281 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,5 +1,5 @@
 
-Installing libpng version 1.2.40beta01 - August 13, 2009
+Installing libpng version 1.2.40beta01 - August 20, 2009
 
 On Unix/Linux and similar systems, you can simply type
 
diff --git a/LICENSE b/LICENSE
index ea71773..78f399c 100644
--- a/LICENSE
+++ b/LICENSE
@@ -10,7 +10,7 @@
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.2.40beta01, August 13, 2009, are
+libpng versions 1.2.6, August 15, 2004, through 1.2.40beta01, August 20, 2009, are
 Copyright (c) 2004, 2006-2009 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors
@@ -108,4 +108,4 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-August 13, 2009
+August 20, 2009
diff --git a/README b/README
index e65c268..f9aa056 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng version 1.2.40beta01 - August 13, 2009 (shared library 12.0)
+README for libpng version 1.2.40beta01 - August 20, 2009 (shared library 12.0)
 See the note about version numbers near the top of png.h
 
 See INSTALL for instructions on how to install libpng.
diff --git a/Y2KINFO b/Y2KINFO
index 1fb8969..56fadf6 100644
--- a/Y2KINFO
+++ b/Y2KINFO
@@ -1,7 +1,7 @@
    Y2K compliance in libpng:
    =========================
 
-      August 13, 2009
+      August 20, 2009
 
       Since the PNG Development group is an ad-hoc body, we can't make
       an official declaration.
diff --git a/libpng-1.2.40beta01.txt b/libpng-1.2.40beta01.txt
index 0b229e2..9066039 100644
--- a/libpng-1.2.40beta01.txt
+++ b/libpng-1.2.40beta01.txt
@@ -1,6 +1,6 @@
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.2.40beta01 - August 13, 2009
+ libpng version 1.2.40beta01 - August 20, 2009
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2009 Glenn Randers-Pehrson
@@ -11,7 +11,7 @@
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.2.40beta01 - August 13, 2009
+ libpng versions 0.97, January 1998, through 1.2.40beta01 - August 20, 2009
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2009 Glenn Randers-Pehrson
 
@@ -3057,7 +3057,7 @@
 
 XIII. Y2K Compliance in libpng
 
-August 13, 2009
+August 20, 2009
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
diff --git a/libpng.3 b/libpng.3
index dd0ca1c..b4fa3d8 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,4 +1,4 @@
-.TH LIBPNG 3 "August 13, 2009"
+.TH LIBPNG 3 "August 20, 2009"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.2.40beta01
 .SH SYNOPSIS
@@ -821,7 +821,7 @@
 .SH LIBPNG.TXT
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.2.40beta01 - August 13, 2009
+ libpng version 1.2.40beta01 - August 20, 2009
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2009 Glenn Randers-Pehrson
@@ -832,7 +832,7 @@
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.2.40beta01 - August 13, 2009
+ libpng versions 0.97, January 1998, through 1.2.40beta01 - August 20, 2009
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2009 Glenn Randers-Pehrson
 
@@ -3878,7 +3878,7 @@
 
 .SH XIII. Y2K Compliance in libpng
 
-August 13, 2009
+August 20, 2009
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
@@ -4219,7 +4219,7 @@
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.2.40beta01 - August 13, 2009:
+Libpng version 1.2.40beta01 - August 20, 2009:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
 
@@ -4242,7 +4242,7 @@
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.2.40beta01, August 13, 2009, are
+libpng versions 1.2.6, August 15, 2004, through 1.2.40beta01, August 20, 2009, are
 Copyright (c) 2004,2006-2008 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors
@@ -4341,7 +4341,7 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-August 13, 2009
+August 20, 2009
 
 .\" end of man page
 
diff --git a/libpngpf.3 b/libpngpf.3
index 9b85f20..3884e56 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,4 +1,4 @@
-.TH LIBPNGPF 3 "August 13, 2009"
+.TH LIBPNGPF 3 "August 20, 2009"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.2.40beta01
 (private functions)
diff --git a/png.5 b/png.5
index 1e7d7df..9acf359 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "August 13, 2009"
+.TH PNG 5 "August 20, 2009"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
diff --git a/png.c b/png.c
index 67ca93d..bd345e0 100644
--- a/png.c
+++ b/png.c
@@ -705,7 +705,7 @@
 png_get_copyright(png_structp png_ptr)
 {
    png_ptr = png_ptr;  /* Silence compiler warning about unused png_ptr */
-   return ((png_charp) "\n libpng version 1.2.40beta01 - August 13, 2009\n\
+   return ((png_charp) "\n libpng version 1.2.40beta01 - August 20, 2009\n\
    Copyright (c) 1998-2009 Glenn Randers-Pehrson\n\
    Copyright (c) 1996-1997 Andreas Dilger\n\
    Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.\n");
diff --git a/png.h b/png.h
index f309a69..3724dfd 100644
--- a/png.h
+++ b/png.h
@@ -1,6 +1,6 @@
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.2.40beta01 - August 19, 2009
+ * libpng version 1.2.40beta01 - August 20, 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.)
@@ -10,7 +10,7 @@
  * Authors and maintainers:
  *  libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
  *  libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
- *  libpng versions 0.97, January 1998, through 1.2.40beta01 - August 19, 2009: Glenn
+ *  libpng versions 0.97, January 1998, through 1.2.40beta01 - August 20, 2009: Glenn
  *  See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -273,7 +273,7 @@
  *
  * This code is released under the libpng license.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.2.40beta01, August 19, 2009, are
+ * libpng versions 1.2.6, August 15, 2004, through 1.2.40beta01, August 20, 2009, are
  * Copyright (c) 2004, 2006-2009 Glenn Randers-Pehrson, and are
  * distributed according to the same disclaimer and license as libpng-1.2.5
  * with the following individual added to the list of Contributing Authors:
@@ -385,7 +385,7 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    August 19, 2009
+ *    August 20, 2009
  *
  *    Since the PNG Development group is an ad-hoc body, we can't make
  *    an official declaration.
@@ -449,7 +449,7 @@
 /* Version information for png.h - this should match the version in png.c */
 #define PNG_LIBPNG_VER_STRING "1.2.40beta01"
 #define PNG_HEADER_VERSION_STRING \
-   " libpng version 1.2.40beta01 - August 19, 2009\n"
+   " libpng version 1.2.40beta01 - August 20, 2009\n"
 
 #define PNG_LIBPNG_VER_SONUM   0
 #define PNG_LIBPNG_VER_DLLNUM  13
diff --git a/pngconf.h b/pngconf.h
index e1c8734..71ab456 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,7 +1,7 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.2.40beta01 - August 13, 2009
+ * libpng version 1.2.40beta01 - August 20, 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.)
diff --git a/pngwutil.c b/pngwutil.c
index cabcb33..0eb94a5 100644
--- a/pngwutil.c
+++ b/pngwutil.c
@@ -1,7 +1,7 @@
 
 /* pngwutil.c - utilities to write a PNG file
  *
- * Last changed in libpng 1.2.40 [August 19, 2009]
+ * Last changed in libpng 1.2.40 [August 20, 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.)