diff --git a/INSTALL b/INSTALL
index 72e9b7a..e6b6ff2 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,5 +1,5 @@
 
-Installing libpng version 1.2.54beta01 - May 9, 2015
+Installing libpng version 1.2.54beta01 - October 23, 2015
 
 On Unix/Linux and similar systems, you can simply type
 
diff --git a/LICENSE b/LICENSE
index 2ad5647..cbc99e4 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 1.2.54beta01, July 13, 2015, are
+libpng versions 1.0.7, July 1, 2000, through 1.2.54beta01, October 23, 2015, are
 Copyright (c) 2000-2002, 2004, 2006-2015 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.0.6
 with the following individuals added to the list of Contributing Authors:
@@ -102,4 +102,4 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-July 13, 2015
+October 23, 2015
diff --git a/README b/README
index 503b3c2..923c12b 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng version 1.2.54beta01 - May 9, 2015 (shared library 12.0)
+README for libpng version 1.2.54beta01 - October 23, 2015 (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.
@@ -135,7 +135,7 @@
 to others, if necessary.
 
 Please do not send suggestions on how to change PNG.  We have
-been discussing PNG for nineteen years now, and it is official and
+been discussing PNG for twenty years now, and it is official and
 finished.  If you have suggestions for libpng, however, I'll
 gladly listen.  Even if your suggestion is not used immediately,
 it may be used later.
diff --git a/Y2KINFO b/Y2KINFO
index d71568f..c79410c 100644
--- a/Y2KINFO
+++ b/Y2KINFO
@@ -1,7 +1,7 @@
    Y2K compliance in libpng:
    =========================
 
-      May 9, 2015
+      October 23, 2015
 
       Since the PNG Development group is an ad-hoc body, we can't make
       an official declaration.
diff --git a/contrib/pngminim/decoder/gather.sh b/contrib/pngminim/decoder/gather.sh
index 913b78d..841b134 100755
--- a/contrib/pngminim/decoder/gather.sh
+++ b/contrib/pngminim/decoder/gather.sh
@@ -1,8 +1,7 @@
 cp ../../pngminus/png2pnm.c pngm2pnm.c
 cp ../../../*.h .
 cp ../../../*.c .
-rm pnggccrd.c pngvcrd.c
-rm example.c pngtest.c pngpread.c pngw*.c
+rm -f example.c pngtest.c pngpread.c pngw*.c pnggccrd.c pngvcrd.c
 # change the following 2 lines if zlib is somewhere else
 cp ../../../../zlib/*.h .
 cp ../../../../zlib/*.c .
diff --git a/contrib/pngminim/encoder/gather.sh b/contrib/pngminim/encoder/gather.sh
index 61d0b13..7d63544 100755
--- a/contrib/pngminim/encoder/gather.sh
+++ b/contrib/pngminim/encoder/gather.sh
@@ -1,8 +1,7 @@
 cp ../../pngminus/pnm2png.c pnm2pngm.c
 cp ../../../*.h .
 cp ../../../*.c .
-rm pnggccrd.c pngvcrd.c
-rm example.c pngtest.c pngr*.c pngpread.c
+rm -f example.c pngtest.c pngpread.c pngr*.c pnggccrd.c pngvcrd.c
 # Change the next 2 lines if zlib is somewhere else.
 cp ../../../../zlib/*.h .
 cp ../../../../zlib/*.c .
diff --git a/contrib/pngminim/preader/gather.sh b/contrib/pngminim/preader/gather.sh
index 357bb9a..eecab9b 100755
--- a/contrib/pngminim/preader/gather.sh
+++ b/contrib/pngminim/preader/gather.sh
@@ -2,8 +2,7 @@
 cp ../../gregbook/COPYING ../../gregbook/LICENSE .
 cp ../../../*.h .
 cp ../../../*.c .
-rm pnggccrd.c pngvcrd.c
-rm example.c pngtest.c pngw*.c
+rm -f example.c pngtest.c pngw*.c pnggccrd.c pngvcrd.c
 # change the following 2 lines if zlib is somewhere else
 cp ../../../../zlib/*.h .
 cp ../../../../zlib/*.c .
diff --git a/libpng-1.2.54beta01.txt b/libpng-1.2.54beta01.txt
index 14b061d..8586af2 100644
--- a/libpng-1.2.54beta01.txt
+++ b/libpng-1.2.54beta01.txt
@@ -1,6 +1,6 @@
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.2.54beta01 - August 11, 2015
+ libpng version 1.2.54beta01 - October 23, 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 1.2.54beta01 - August 11, 2015
+ libpng versions 0.97, January 1998, through 1.2.54beta01 - October 23, 2015
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2014 Glenn Randers-Pehrson
 
@@ -3152,7 +3152,7 @@
 
 XIII. Y2K Compliance in libpng
 
-August 11, 2015
+October 23, 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 8c07272..701c9c1 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,4 +1,4 @@
-.TH LIBPNG 3 "August 11, 2015"
+.TH LIBPNG 3 "October 23, 2015"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.2.54beta01
 .SH SYNOPSIS
@@ -410,7 +410,7 @@
 .SH LIBPNG.TXT
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.2.54beta01 - August 11, 2015
+ libpng version 1.2.54beta01 - October 23, 2015
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2014 Glenn Randers-Pehrson
@@ -421,7 +421,7 @@
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.2.54beta01 - August 11, 2015
+ libpng versions 0.97, January 1998, through 1.2.54beta01 - October 23, 2015
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2014 Glenn Randers-Pehrson
 
@@ -3562,7 +3562,7 @@
 
 .SH XIII. Y2K Compliance in libpng
 
-August 11, 2015
+October 23, 2015
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
@@ -3959,7 +3959,7 @@
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.2.54beta01 - August 11, 2015:
+Libpng version 1.2.54beta01 - October 23, 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).
 
@@ -3982,7 +3982,7 @@
 
 This code is released under the libpng license.
 
-libpng versions 1.0.7, July 1, 2000, through 1.2.54beta01, August 11, 2015, are
+libpng versions 1.0.7, July 1, 2000, through 1.2.54beta01, October 23, 2015, are
 Copyright (c) 2000-2002, 2004, 2006-2015 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.0.6
 with the following individuals added to the list of Contributing Authors:
@@ -4074,7 +4074,7 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-August 11, 2015
+October 23, 2015
 
 .\" end of man page
 
diff --git a/libpngpf.3 b/libpngpf.3
index e3280f6..6bef5ce 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,4 +1,4 @@
-.TH LIBPNGPF 3 "August 11, 2015"
+.TH LIBPNGPF 3 "October 23, 2015"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.2.54beta01
 (private functions)
diff --git a/png.5 b/png.5
index 4903dfd..3135d36 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "August 11, 2015"
+.TH PNG 5 "October 23, 2015"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
diff --git a/png.h b/png.h
index 3988fe0..faf69b6 100644
--- a/png.h
+++ b/png.h
@@ -1,7 +1,7 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.2.54beta01, July 13, 2015
+ * libpng version 1.2.54beta01, October 23, 2015
  *
  * Copyright (c) 1998-2015 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -12,7 +12,7 @@
  * 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 1.2.54beta01, July 13, 2015: Glenn
+ *  libpng versions 0.97, January 1998, through 1.2.54beta01, October 23, 2015: Glenn
  *  See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -330,7 +330,7 @@
  *
  * This code is released under the libpng license.
  *
- * libpng versions 1.0.7, July 1, 2000, through 1.2.54beta01, July 13, 2015, are
+ * libpng versions 1.0.7, July 1, 2000, through 1.2.54beta01, October 23, 2015, are
  * Copyright (c) 2000-2002, 2004, 2006-2015 Glenn Randers-Pehrson, and are
  * distributed according to the same disclaimer and license as libpng-1.0.6
  * with the following individuals added to the list of Contributing Authors:
@@ -437,7 +437,7 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    July 13, 2015
+ *    October 23, 2015
  *
  *    Since the PNG Development group is an ad-hoc body, we can't make
  *    an official declaration.
@@ -501,7 +501,7 @@
 /* Version information for png.h - this should match the version in png.c */
 #define PNG_LIBPNG_VER_STRING "1.2.54beta01"
 #define PNG_HEADER_VERSION_STRING \
-   " libpng version 1.2.54beta01 - July 13, 2015\n"
+   " libpng version 1.2.54beta01 - October 23, 2015\n"
 
 #define PNG_LIBPNG_VER_SONUM   0
 #define PNG_LIBPNG_VER_DLLNUM  13
diff --git a/pngconf.h b/pngconf.h
index bd2072e..821c5a2 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,7 +1,7 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.2.54beta01, May 9, 2015
+ * libpng version 1.2.54beta01, October 23, 2015
  *
  * Copyright (c) 1998-2015 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/scripts/README.txt b/scripts/README.txt
index ea43ea5..70b59dc 100644
--- a/scripts/README.txt
+++ b/scripts/README.txt
@@ -1,5 +1,5 @@
 
-Makefiles for  libpng version 1.2.54beta01 - May 9, 2015
+Makefiles for  libpng version 1.2.54beta01 - October 23, 2015
 
  makefile.linux    =>  Linux/ELF makefile
                        (gcc, creates libpng12.so.0.1.2.54beta01)