diff --git a/LICENSE b/LICENSE
index a520c22..af72283 100644
--- a/LICENSE
+++ b/LICENSE
@@ -10,7 +10,7 @@
 
 This code is released under the libpng license.
 
-libpng versions 1.0.7, July 1, 2000, through 1.7.0beta80, March 9, 2016, are
+libpng versions 1.0.7, July 1, 2000, through 1.7.0beta80, May 6, 2016, are
 Copyright (c) 2000-2002, 2004, 2006-2016 Glenn Randers-Pehrson, are
 derived from libpng-1.0.6, and are distributed according to the same
 disclaimer and license as libpng-1.0.6 with the following individuals
@@ -109,4 +109,4 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-March 9, 2016
+May 6, 2016
diff --git a/README b/README
index 177e755..032c5de 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng version 1.7.0beta80 - March 9, 2016 (shared library 17.0)
+README for libpng version 1.7.0beta80 - May 6, 2016 (shared library 17.0)
 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 2e20cb8..21c83d9 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 1.7.0beta80 - March 9, 2016
+ libpng version 1.7.0beta80 - May 6, 2016
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2015 Glenn Randers-Pehrson
@@ -11,7 +11,7 @@
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.7.0beta80 - March 9, 2016
+ libpng versions 0.97, January 1998, through 1.7.0beta80 - May 6, 2016
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2015 Glenn Randers-Pehrson
 
diff --git a/libpng.3 b/libpng.3
index 79969f1..90274e0 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,4 +1,4 @@
-.TH LIBPNG 3 "March 9, 2016"
+.TH LIBPNG 3 "May 6, 2016"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.7.0beta80
 .SH SYNOPSIS
@@ -500,7 +500,7 @@
 .SH LIBPNG.TXT
 libpng-manual.txt - A description on how to use and modify libpng
 
- libpng version 1.7.0beta80 - March 9, 2016
+ libpng version 1.7.0beta80 - May 6, 2016
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2015 Glenn Randers-Pehrson
@@ -511,7 +511,7 @@
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.7.0beta80 - March 9, 2016
+ libpng versions 0.97, January 1998, through 1.7.0beta80 - May 6, 2016
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2015 Glenn Randers-Pehrson
 
@@ -6004,7 +6004,7 @@
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.7.0beta80 - March 9, 2016:
+Libpng version 1.7.0beta80 - May 6, 2016:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
 
@@ -6029,7 +6029,7 @@
 
 This code is released under the libpng license.
 
-libpng versions 1.0.7, July 1, 2000, through 1.7.0beta80, March 9, 2016, are
+libpng versions 1.0.7, July 1, 2000, through 1.7.0beta80, May 6, 2016, are
 Copyright (c) 2000-2002, 2004, 2006-2016 Glenn Randers-Pehrson, are
 derived from libpng-1.0.6, and are distributed according to the same
 disclaimer and license as libpng-1.0.6 with the following individuals
@@ -6128,7 +6128,7 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-March 9, 2016
+May 6, 2016
 
 .\" end of man page
 
diff --git a/libpngpf.3 b/libpngpf.3
index 040c4e8..2661473 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,4 +1,4 @@
-.TH LIBPNGPF 3 "March 9, 2016"
+.TH LIBPNGPF 3 "May 6, 2016"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.7.0beta80
 (private functions)
diff --git a/png.5 b/png.5
index 8a8cb80..df45476 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "March 9, 2016"
+.TH PNG 5 "May 6, 2016"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
diff --git a/png.c b/png.c
index 4b127b9..840039b 100644
--- a/png.c
+++ b/png.c
@@ -705,14 +705,14 @@
 #else
 #  ifdef __STDC__
    return PNG_STRING_NEWLINE \
-     "libpng version 1.7.0beta80 - March 9, 2016" PNG_STRING_NEWLINE \
+     "libpng version 1.7.0beta80 - May 6, 2016" PNG_STRING_NEWLINE \
      "Copyright (c) 1998-2002,2004,2006-2016 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 1.7.0beta80 - March 9, 2016\
+      return "libpng version 1.7.0beta80 - May 6, 2016\
       Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson\
       Copyright (c) 1996-1997 Andreas Dilger\
       Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";
diff --git a/pngconf.h b/pngconf.h
index 303eecd..0f65b98 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,7 +1,7 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.7.0beta80, May 5, 2016
+ * libpng version 1.7.0beta80, May 6, 2016
  *
  * Copyright (c) 1998-2002,2004,2006-2016 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 bd16821..7c2a8ea 100644
--- a/projects/vstudio/README.txt
+++ b/projects/vstudio/README.txt
@@ -1,7 +1,7 @@
 
 VisualStudio instructions
 
-libpng version 1.7.0beta80 - March 9, 2016
+libpng version 1.7.0beta80 - May 6, 2016
 
 Copyright (c) 2010,2013,2015 Glenn Randers-Pehrson
 
diff --git a/projects/vstudio/zlib.props b/projects/vstudio/zlib.props
index 0ff077e..2213aec 100644
--- a/projects/vstudio/zlib.props
+++ b/projects/vstudio/zlib.props
@@ -2,7 +2,7 @@
 <!--
  * zlib.props - location of zlib source
  *
- * libpng version 1.7.0beta80 - March 9, 2016
+ * libpng version 1.7.0beta80 - May 6, 2016
  *
  * Copyright (c) 2011,2013,2014 Glenn Randers-Pehrson
  *
diff --git a/scripts/README.txt b/scripts/README.txt
index a702b3d..b1ac1ca 100644
--- a/scripts/README.txt
+++ b/scripts/README.txt
@@ -1,5 +1,5 @@
 
-Makefiles for  libpng version 1.7.0beta80 - March 9, 2016
+Makefiles for  libpng version 1.7.0beta80 - May 6, 2016
 
 pnglibconf.h.prebuilt       =>  Stores configuration settings
  makefile.linux    =>  Linux/ELF makefile
diff --git a/scripts/pnglibconf.h.prebuilt b/scripts/pnglibconf.h.prebuilt
index 27abfc7..3d09506 100644
--- a/scripts/pnglibconf.h.prebuilt
+++ b/scripts/pnglibconf.h.prebuilt
@@ -1,7 +1,8 @@
 /* libpng 1.7.0beta80 STANDARD API DEFINITION */
+
 /* pnglibconf.h - library build configuration */
 
-/* libpng version 1.7.0beta80, March 9, 2016 */
+/* libpng version 1.7.0beta80, May 6, 2016 */
 
 /* Copyright (c) 1998-2016 Glenn Randers-Pehrson */