diff --git a/LICENSE b/LICENSE
index 74916f9..9224cb6 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 1.6.0beta40, January 19, 2013, are
+libpng versions 1.2.6, August 15, 2004, through 1.6.0beta40, January 20, 2013, are
 Copyright (c) 2004, 2006-2012 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
-January 19, 2013
+January 20, 2013
diff --git a/README b/README
index 7926a62..d70ea55 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng version 1.6.0beta40 - January 19, 2013 (shared library 16.0)
+README for libpng version 1.6.0beta40 - January 20, 2013 (shared library 16.0)
 See the note about version numbers near the top of png.h
 
 See INSTALL for instructions on how to install libpng.
diff --git a/libpng-manual.txt b/libpng-manual.txt
index cd0b7bb..c6cc0d6 100644
--- a/libpng-manual.txt
+++ b/libpng-manual.txt
@@ -1,6 +1,6 @@
 libpng-manual.txt - A description on how to use and modify libpng
 
- libpng version 1.6.0beta40 - January 19, 2013
+ libpng version 1.6.0beta40 - January 20, 2013
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2013 Glenn Randers-Pehrson
@@ -11,7 +11,7 @@
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.6.0beta40 - January 19, 2013
+ libpng versions 0.97, January 1998, through 1.6.0beta40 - January 20, 2013
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2013 Glenn Randers-Pehrson
 
@@ -5128,7 +5128,7 @@
 
 XVI. Y2K Compliance in libpng
 
-January 19, 2013
+January 20, 2013
 
 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 e0302c5..c0f3b4c 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,4 +1,4 @@
-.TH LIBPNG 3 "January 19, 2013"
+.TH LIBPNG 3 "January 20, 2013"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.6.0beta40
 .SH SYNOPSIS
@@ -504,7 +504,7 @@
 .SH LIBPNG.TXT
 libpng-manual.txt - A description on how to use and modify libpng
 
- libpng version 1.6.0beta40 - January 19, 2013
+ libpng version 1.6.0beta40 - January 20, 2013
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2013 Glenn Randers-Pehrson
@@ -515,7 +515,7 @@
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.6.0beta40 - January 19, 2013
+ libpng versions 0.97, January 1998, through 1.6.0beta40 - January 20, 2013
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2013 Glenn Randers-Pehrson
 
@@ -5633,7 +5633,7 @@
 
 .SH XVI. Y2K Compliance in libpng
 
-January 19, 2013
+January 20, 2013
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
@@ -5901,7 +5901,7 @@
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.6.0beta40 - January 19, 2013:
+Libpng version 1.6.0beta40 - January 20, 2013:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
 
@@ -5924,7 +5924,7 @@
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.6.0beta40, January 19, 2013, are
+libpng versions 1.2.6, August 15, 2004, through 1.6.0beta40, January 20, 2013, are
 Copyright (c) 2004,2006-2007 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
@@ -6023,7 +6023,7 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-January 19, 2013
+January 20, 2013
 
 .\" end of man page
 
diff --git a/libpngpf.3 b/libpngpf.3
index 55ceec4..4cd91a3 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,4 +1,4 @@
-.TH LIBPNGPF 3 "January 19, 2013"
+.TH LIBPNGPF 3 "January 20, 2013"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.6.0beta40
 (private functions)
diff --git a/png.5 b/png.5
index f451327..2406f32 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "January 19, 2013"
+.TH PNG 5 "January 20, 2013"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
diff --git a/pngconf.h b/pngconf.h
index ee6397a..3b1026a 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,7 +1,7 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.6.0beta40 - January 19, 2013
+ * libpng version 1.6.0beta40 - January 20, 2013
  *
  * Copyright (c) 1998-2013 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/projects/vstudio/readme.txt b/projects/vstudio/readme.txt
index 30662fc..0a509f4 100644
--- a/projects/vstudio/readme.txt
+++ b/projects/vstudio/readme.txt
@@ -1,7 +1,7 @@
 
 VisualStudio instructions
 
-libpng version 1.6.0beta40 - January 19, 2013
+libpng version 1.6.0beta40 - January 20, 2013
 
 Copyright (c) 1998-2010 Glenn Randers-Pehrson
 
diff --git a/projects/vstudio/zlib.props b/projects/vstudio/zlib.props
index cb5dec9..0147528 100644
--- a/projects/vstudio/zlib.props
+++ b/projects/vstudio/zlib.props
@@ -2,7 +2,7 @@
 <!--
  * zlib.props - location of zlib source
  *
- * libpng version 1.6.0beta40 - January 19, 2013
+ * libpng version 1.6.0beta40 - January 20, 2013
  *
  * Copyright (c) 1998-2011 Glenn Randers-Pehrson
  *
diff --git a/scripts/README.txt b/scripts/README.txt
index 24628ed..f6fc19a 100644
--- a/scripts/README.txt
+++ b/scripts/README.txt
@@ -1,5 +1,5 @@
 
-Makefiles for  libpng version 1.6.0beta40 - January 19, 2013
+Makefiles for  libpng version 1.6.0beta40 - January 20, 2013
 
 pnglibconf.h.prebuilt       =>  Stores configuration settings
  makefile.linux    =>  Linux/ELF makefile
diff --git a/scripts/pnglibconf.h.prebuilt b/scripts/pnglibconf.h.prebuilt
index f341a75..aecc6ea 100644
--- a/scripts/pnglibconf.h.prebuilt
+++ b/scripts/pnglibconf.h.prebuilt
@@ -3,7 +3,7 @@
 
 /* pnglibconf.h - library build configuration */
 
-/* Libpng 1.6.0beta40 - January 19, 2013 */
+/* Libpng 1.6.0beta40 - January 20, 2013 */
 
 /* Copyright (c) 1998-2013 Glenn Randers-Pehrson */