diff --git a/LICENSE b/LICENSE
index efeab11..f3ab3c4 100644
--- a/LICENSE
+++ b/LICENSE
@@ -10,8 +10,8 @@
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.5.22beta02, January 29, 2015, are
-Copyright (c) 2004, 2006-2014 Glenn Randers-Pehrson, and are
+libpng versions 1.2.6, August 15, 2004, through 1.5.22beta02, February 17, 2015, are
+Copyright (c) 2004, 2006-2015 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 29, 2015
+February 17, 2015
diff --git a/README b/README
index 6eb4812..71716ca 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng version 1.5.22beta02 - January 29, 2015 (shared library 15.0)
+README for libpng version 1.5.22beta02 - February 17, 2015 (shared library 15.0)
 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 ca5bfcf..69c1549 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 1.5.22beta02 - January 29, 2015
+ libpng version 1.5.22beta02 - February 17, 2015
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2014 Glenn Randers-Pehrson
@@ -11,7 +11,7 @@
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.5.22beta02 - January 29, 2015
+ libpng versions 0.97, January 1998, through 1.5.22beta02 - February 17, 2015
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2014 Glenn Randers-Pehrson
 
@@ -4531,7 +4531,7 @@
 
 XIV. Y2K Compliance in libpng
 
-January 29, 2015
+February 17, 2015
 
 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 6081fae..967545f 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,4 +1,4 @@
-.TH LIBPNG 3 "January 29, 2015"
+.TH LIBPNG 3 "February 17, 2015"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.5.22beta02
 .SH SYNOPSIS
@@ -492,7 +492,7 @@
 .SH LIBPNG.TXT
 Libpng-manual.txt - A description on how to use and modify libpng
 
- libpng version 1.5.22beta02 - January 29, 2015
+ libpng version 1.5.22beta02 - February 17, 2015
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2014 Glenn Randers-Pehrson
@@ -503,7 +503,7 @@
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.5.22beta02 - January 29, 2015
+ libpng versions 0.97, January 1998, through 1.5.22beta02 - February 17, 2015
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2014 Glenn Randers-Pehrson
 
@@ -5023,7 +5023,7 @@
 
 .SH XIV. Y2K Compliance in libpng
 
-January 29, 2015
+February 17, 2015
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
@@ -5330,7 +5330,7 @@
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.5.22beta02 - January 29, 2015:
+Libpng version 1.5.22beta02 - February 17, 2015:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
 
@@ -5353,7 +5353,7 @@
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.5.22beta02, January 29, 2015, are
+libpng versions 1.2.6, August 15, 2004, through 1.5.22beta02, February 17, 2015, are
 Copyright (c) 2004,2006-20014 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
@@ -5452,7 +5452,7 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-January 29, 2015
+February 17, 2015
 
 .\" end of man page
 
diff --git a/libpngpf.3 b/libpngpf.3
index 5e80f0e..653f4ab 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,4 +1,4 @@
-.TH LIBPNGPF 3 "January 29, 2015"
+.TH LIBPNGPF 3 "February 17, 2015"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.5.22beta02
 (private functions)
diff --git a/png.5 b/png.5
index 4ffa713..b7f4a08 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "January 29, 2015"
+.TH PNG 5 "February 17, 2015"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
diff --git a/png.c b/png.c
index a2417c5..7a9139e 100644
--- a/png.c
+++ b/png.c
@@ -661,14 +661,14 @@
 #else
 #  ifdef __STDC__
    return PNG_STRING_NEWLINE \
-     "libpng version 1.5.22beta02 - January 29, 2015" PNG_STRING_NEWLINE \
-     "Copyright (c) 1998-2014 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
+     "libpng version 1.5.22beta02 - February 17, 2015" PNG_STRING_NEWLINE \
+     "Copyright (c) 1998-2015 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
      "Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
      "Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
      PNG_STRING_NEWLINE;
 #  else
-      return "libpng version 1.5.22beta02 - January 29, 2015\
-      Copyright (c) 1998-2014 Glenn Randers-Pehrson\
+      return "libpng version 1.5.22beta02 - February 17, 2015\
+      Copyright (c) 1998-2015 Glenn Randers-Pehrson\
       Copyright (c) 1996-1997 Andreas Dilger\
       Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";
 #  endif
diff --git a/png.h b/png.h
index 28143e1..e8d2eef 100644
--- a/png.h
+++ b/png.h
@@ -1,8 +1,8 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.5.22beta02 - January 29, 2015
- * Copyright (c) 1998-2014 Glenn Randers-Pehrson
+ * libpng version 1.5.22beta02 - February 17, 2015
+ * Copyright (c) 1998-2015 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.)
  *
@@ -11,7 +11,7 @@
  * 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 1.5.22beta02 - January 29, 2015: Glenn
+ *   libpng versions 0.97, January 1998, through 1.5.22beta02 - February 17, 2015: Glenn
  *   See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -237,8 +237,8 @@
  *
  * This code is released under the libpng license.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.5.22beta02, January 29, 2015, are
- * Copyright (c) 2004, 2006-2014 Glenn Randers-Pehrson, and are
+ * libpng versions 1.2.6, August 15, 2004, through 1.5.22beta02, February 17, 2015, are
+ * Copyright (c) 2004, 2006-2015 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:
  *
@@ -349,7 +349,7 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    January 29, 2015
+ *    February 17, 2015
  *
  *    Since the PNG Development group is an ad-hoc body, we can't make
  *    an official declaration.
@@ -418,7 +418,7 @@
 /* Version information for png.h - this should match the version in png.c */
 #define PNG_LIBPNG_VER_STRING "1.5.22beta02"
 #define PNG_HEADER_VERSION_STRING \
-     " libpng version 1.5.22beta02 - January 29, 2015\n"
+     " libpng version 1.5.22beta02 - February 17, 2015\n"
 
 #define PNG_LIBPNG_VER_SONUM   15
 #define PNG_LIBPNG_VER_DLLNUM  15
diff --git a/pngconf.h b/pngconf.h
index 22953f6..7c5554b 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,7 +1,7 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.5.22beta02 - January 29, 2015
+ * libpng version 1.5.22beta02 - February 17, 2015
  *
  * 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 0b4ade5..f75e669 100644
--- a/projects/vstudio/readme.txt
+++ b/projects/vstudio/readme.txt
@@ -1,7 +1,7 @@
 
 VisualStudio instructions
 
-libpng version 1.5.22beta02 - January 29, 2015
+libpng version 1.5.22beta02 - February 17, 2015
 
 Copyright (c) 1998-2010 Glenn Randers-Pehrson
 
diff --git a/projects/vstudio/zlib.props b/projects/vstudio/zlib.props
index 1e2f2e2..ec8a483 100644
--- a/projects/vstudio/zlib.props
+++ b/projects/vstudio/zlib.props
@@ -2,7 +2,7 @@
 <!--
  * zlib.props - location of zlib source
  *
- * libpng version 1.5.22beta02 - January 29, 2015
+ * libpng version 1.5.22beta02 - February 17, 2015
  *
  * Copyright (c) 1998-2011 Glenn Randers-Pehrson
  *
diff --git a/scripts/README.txt b/scripts/README.txt
index 69e24cc..afc25e5 100644
--- a/scripts/README.txt
+++ b/scripts/README.txt
@@ -1,5 +1,5 @@
 
-Makefiles for  libpng version 1.5.22beta02 - January 29, 2015
+Makefiles for  libpng version 1.5.22beta02 - February 17, 2015
 
 pnglibconf.h.prebuilt       =>  Stores configuration settings
  makefile.linux    =>  Linux/ELF makefile