diff --git a/ANNOUNCE b/ANNOUNCE
index fc89377..ba0156b 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,5 +1,5 @@
 
-Libpng 1.2.42rc02 - December 22, 2009
+Libpng 1.2.42rc02 - December 23, 2009
 
 This is not intended to be a public release.  It will be replaced
 within a few weeks by a public version or by another test version.
@@ -61,7 +61,7 @@
 version 1.2.42rc01 [December 17, 2009]
   No changes.
 
-version 1.2.42rc02 [December 22, 2009]
+version 1.2.42rc02 [December 23, 2009]
   Renamed libpng-pc.in back to libpng.pc.in and revised CMakeLists.txt
     (revising changes made in 1.2.41beta17 and 1.2.41rc01)
 
diff --git a/CHANGES b/CHANGES
index a3b0e8e..0f2b3b7 100644
--- a/CHANGES
+++ b/CHANGES
@@ -2624,7 +2624,7 @@
 version 1.2.42rc01 [December 17, 2009]
   No changes.
 
-version 1.2.42rc02 [December 22, 2009]
+version 1.2.42rc02 [December 23, 2009]
   Renamed libpng-pc.in back to libpng.pc.in and revised CMakeLists.txt
     (revising changes made in 1.2.41beta17 and 1.2.41rc01)
 
diff --git a/INSTALL b/INSTALL
index b5b5417..1f22ad7 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,5 +1,5 @@
 
-Installing libpng version 1.2.42rc02 - December 22, 2009
+Installing libpng version 1.2.42rc02 - December 23, 2009
 
 On Unix/Linux and similar systems, you can simply type
 
diff --git a/LICENSE b/LICENSE
index 5b803ca..ce64a3c 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 1.2.42rc02, December 22, 2009, are
+libpng versions 1.2.6, August 15, 2004, through 1.2.42rc02, December 23, 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
-December 22, 2009
+December 23, 2009
diff --git a/README b/README
index d6015f3..ad01ff4 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng version 1.2.42rc02 - December 22, 2009 (shared library 12.0)
+README for libpng version 1.2.42rc02 - December 23, 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 cf30f46..ef17a3b 100644
--- a/Y2KINFO
+++ b/Y2KINFO
@@ -1,7 +1,7 @@
    Y2K compliance in libpng:
    =========================
 
-      December 22, 2009
+      December 23, 2009
 
       Since the PNG Development group is an ad-hoc body, we can't make
       an official declaration.
diff --git a/libpng-1.2.42rc02.txt b/libpng-1.2.42rc02.txt
index 6ec8bb3..0d2b0e7 100644
--- a/libpng-1.2.42rc02.txt
+++ b/libpng-1.2.42rc02.txt
@@ -1,6 +1,6 @@
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.2.42rc02 - December 22, 2009
+ libpng version 1.2.42rc02 - December 23, 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 1.2.42rc02 - December 22, 2009
+ libpng versions 0.97, January 1998, through 1.2.42rc02 - December 23, 2009
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2009 Glenn Randers-Pehrson
 
@@ -3176,7 +3176,7 @@
 
 XIII. Y2K Compliance in libpng
 
-December 22, 2009
+December 23, 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 3f4429a..f9e1494 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,4 +1,4 @@
-.TH LIBPNG 3 "December 22, 2009"
+.TH LIBPNG 3 "December 23, 2009"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.2.42rc02
 .SH SYNOPSIS
@@ -821,7 +821,7 @@
 .SH LIBPNG.TXT
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.2.42rc02 - December 22, 2009
+ libpng version 1.2.42rc02 - December 23, 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 1.2.42rc02 - December 22, 2009
+ libpng versions 0.97, January 1998, through 1.2.42rc02 - December 23, 2009
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2009 Glenn Randers-Pehrson
 
@@ -3997,7 +3997,7 @@
 
 .SH XIII. Y2K Compliance in libpng
 
-December 22, 2009
+December 23, 2009
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
@@ -4293,7 +4293,9 @@
  1.0.51              10    10051  10.so.0.51[.0]
  1.2.41              13    10241  12.so.0.41[.0]
  1.2.42beta01-02     13    10242  12.so.0.42[.0]
- 1.2.42rc01-02       13    10242  12.so.0.42[.0]
+ 1.2.42rc01          13    10242  12.so.0.42[.0]
+ 1.0.52              10    10052  10.so.0.52[.0]
+ 1.2.42              13    10242  12.so.0.42[.0]
 
 Henceforth the source version will match the shared-library minor
 and patch numbers; the shared-library major version number will be
@@ -4349,7 +4351,7 @@
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.2.42rc02 - December 22, 2009:
+Libpng version 1.2.42rc02 - December 23, 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).
 
@@ -4372,7 +4374,7 @@
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.2.42rc02, December 22, 2009, are
+libpng versions 1.2.6, August 15, 2004, through 1.2.42rc02, December 23, 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
@@ -4471,7 +4473,7 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-December 22, 2009
+December 23, 2009
 
 .\" end of man page
 
diff --git a/libpngpf.3 b/libpngpf.3
index fc43883..1c127cc 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,4 +1,4 @@
-.TH LIBPNGPF 3 "December 22, 2009"
+.TH LIBPNGPF 3 "December 23, 2009"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.2.42rc02
 (private functions)
diff --git a/png.5 b/png.5
index cffa6eb..4405dba 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "December 22, 2009"
+.TH PNG 5 "December 23, 2009"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
diff --git a/png.c b/png.c
index eb9f8c3..be275f2 100644
--- a/png.c
+++ b/png.c
@@ -1,7 +1,7 @@
 
 /* png.c - location for general purpose libpng functions
  *
- * Last changed in libpng 1.2.41 [December 22, 2009]
+ * Last changed in libpng 1.2.41 [December 23, 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.)
@@ -723,13 +723,13 @@
 #else
 #ifdef __STDC__
    return ((png_charp) PNG_STRING_NEWLINE \
-     "libpng version 1.2.42rc02 - December 22, 2009" PNG_STRING_NEWLINE \
+     "libpng version 1.2.42rc02 - December 23, 2009" PNG_STRING_NEWLINE \
      "Copyright (c) 1998-2009 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 ((png_charp) "libpng version 1.2.42rc02 - December 22, 2009\
+      return ((png_charp) "libpng version 1.2.42rc02 - December 23, 2009\
       Copyright (c) 1998-2009 Glenn Randers-Pehrson\
       Copyright (c) 1996-1997 Andreas Dilger\
       Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.");
diff --git a/png.h b/png.h
index c9e2c58..c9fdd91 100644
--- a/png.h
+++ b/png.h
@@ -1,6 +1,6 @@
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.2.42rc02 - December 22, 2009
+ * libpng version 1.2.42rc02 - December 23, 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 1.2.42rc02 - December 22, 2009: Glenn
+ *  libpng versions 0.97, January 1998, through 1.2.42rc02 - December 23, 2009: Glenn
  *  See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -251,7 +251,9 @@
  *    1.0.51                  10    10051  10.so.0.51[.0]
  *    1.2.41                  13    10241  12.so.0.41[.0]
  *    1.2.42beta01-02         13    10242  12.so.0.42[.0]
- *    1.2.42rc01-02           13    10242  12.so.0.42[.0]
+ *    1.2.42rc01              13    10242  12.so.0.42[.0]
+ *    1.0.51                  10    10052  10.so.0.52[.0]
+ *    1.2.42                  13    10242  12.so.0.42[.0]
  *
  *    Henceforth the source version will match the shared-library major
  *    and minor numbers; the shared-library major version number will be
@@ -283,7 +285,7 @@
  *
  * This code is released under the libpng license.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.2.42rc02, December 22, 2009, are
+ * libpng versions 1.2.6, August 15, 2004, through 1.2.42rc02, December 23, 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:
@@ -395,7 +397,7 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    December 22, 2009
+ *    December 23, 2009
  *
  *    Since the PNG Development group is an ad-hoc body, we can't make
  *    an official declaration.
@@ -459,7 +461,7 @@
 /* Version information for png.h - this should match the version in png.c */
 #define PNG_LIBPNG_VER_STRING "1.2.42rc02"
 #define PNG_HEADER_VERSION_STRING \
-   " libpng version 1.2.42rc02 - December 22, 2009\n"
+   " libpng version 1.2.42rc02 - December 23, 2009\n"
 
 #define PNG_LIBPNG_VER_SONUM   0
 #define PNG_LIBPNG_VER_DLLNUM  13
diff --git a/pngconf.h b/pngconf.h
index 87c4c1b..cc7c02a 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,7 +1,7 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.2.42rc02 - December 22, 2009
+ * libpng version 1.2.42rc02 - December 23, 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/pngerror.c b/pngerror.c
index 539f5a7..84de539 100644
--- a/pngerror.c
+++ b/pngerror.c
@@ -1,7 +1,7 @@
 
 /* pngerror.c - stub functions for i/o and memory allocation
  *
- * Last changed in libpng 1.2.41 [December 22, 2009]
+ * Last changed in libpng 1.2.41 [December 23, 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/pngget.c b/pngget.c
index dbefdb9..4814b02 100644
--- a/pngget.c
+++ b/pngget.c
@@ -1,7 +1,7 @@
 
 /* pngget.c - retrieval of values from info struct
  *
- * Last changed in libpng 1.2.41 [December 22, 2009]
+ * Last changed in libpng 1.2.41 [December 23, 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/pngmem.c b/pngmem.c
index 8342738..26c6ec2 100644
--- a/pngmem.c
+++ b/pngmem.c
@@ -1,7 +1,7 @@
 
 /* pngmem.c - stub functions for memory allocation
  *
- * Last changed in libpng 1.2.41 [December 22, 2009]
+ * Last changed in libpng 1.2.41 [December 23, 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/pngpread.c b/pngpread.c
index 38fdabe..83bad1d 100644
--- a/pngpread.c
+++ b/pngpread.c
@@ -1,7 +1,7 @@
 
 /* pngpread.c - read a png file in push mode
  *
- * Last changed in libpng 1.2.41 [December 22, 2009]
+ * Last changed in libpng 1.2.41 [December 23, 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/pngread.c b/pngread.c
index 62b23af..f6f5ac4 100644
--- a/pngread.c
+++ b/pngread.c
@@ -1,7 +1,7 @@
 
 /* pngread.c - read a PNG file
  *
- * Last changed in libpng 1.2.41 [December 22, 2009]
+ * Last changed in libpng 1.2.41 [December 23, 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/pngrio.c b/pngrio.c
index 7e2c759..7453373 100644
--- a/pngrio.c
+++ b/pngrio.c
@@ -1,7 +1,7 @@
 
 /* pngrio.c - functions for data input
  *
- * Last changed in libpng 1.2.41 [December 22, 2009]
+ * Last changed in libpng 1.2.41 [December 23, 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/pngrtran.c b/pngrtran.c
index 3087975..9805c39 100644
--- a/pngrtran.c
+++ b/pngrtran.c
@@ -1,7 +1,7 @@
 
 /* pngrtran.c - transforms the data in a row for PNG readers
  *
- * Last changed in libpng 1.2.41 [December 22, 2009]
+ * Last changed in libpng 1.2.41 [December 23, 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/pngrutil.c b/pngrutil.c
index 4250865..8726387 100644
--- a/pngrutil.c
+++ b/pngrutil.c
@@ -1,7 +1,7 @@
 
 /* pngrutil.c - utilities to read a PNG file
  *
- * Last changed in libpng 1.2.41 [December 22, 2009]
+ * Last changed in libpng 1.2.41 [December 23, 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/pngset.c b/pngset.c
index b3f4b3f..dcc3973 100644
--- a/pngset.c
+++ b/pngset.c
@@ -1,7 +1,7 @@
 
 /* pngset.c - storage of image information into info struct
  *
- * Last changed in libpng 1.2.41 [December 22, 2009]
+ * Last changed in libpng 1.2.41 [December 23, 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/pngtest.c b/pngtest.c
index 7b28e4d..368a910 100644
--- a/pngtest.c
+++ b/pngtest.c
@@ -1,7 +1,7 @@
 
 /* pngtest.c - a simple test program to test libpng
  *
- * Last changed in libpng 1.2.41 [December 22, 2009]
+ * Last changed in libpng 1.2.41 [December 23, 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/pngtrans.c b/pngtrans.c
index 57f876e..17d7ccc 100644
--- a/pngtrans.c
+++ b/pngtrans.c
@@ -1,7 +1,7 @@
 
 /* pngtrans.c - transforms the data in a row (used by both readers and writers)
  *
- * Last changed in libpng 1.2.41 [December 22, 2009]
+ * Last changed in libpng 1.2.41 [December 23, 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/pngwio.c b/pngwio.c
index 5e9b628..bf0d4e4 100644
--- a/pngwio.c
+++ b/pngwio.c
@@ -1,7 +1,7 @@
 
 /* pngwio.c - functions for data output
  *
- * Last changed in libpng 1.2.41 [December 22, 2009]
+ * Last changed in libpng 1.2.41 [December 23, 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/pngwrite.c b/pngwrite.c
index ce55118..b0da051 100644
--- a/pngwrite.c
+++ b/pngwrite.c
@@ -1,7 +1,7 @@
 
 /* pngwrite.c - general routines to write a PNG file
  *
- * Last changed in libpng 1.2.41 [December 22, 2009]
+ * Last changed in libpng 1.2.41 [December 23, 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/pngwtran.c b/pngwtran.c
index df142f4..a1bc3ad 100644
--- a/pngwtran.c
+++ b/pngwtran.c
@@ -1,7 +1,7 @@
 
 /* pngwtran.c - transforms the data in a row for PNG writers
  *
- * Last changed in libpng 1.2.41 [December 22, 2009]
+ * Last changed in libpng 1.2.41 [December 23, 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 cc0a878..831d8e6 100644
--- a/pngwutil.c
+++ b/pngwutil.c
@@ -1,7 +1,7 @@
 
 /* pngwutil.c - utilities to write a PNG file
  *
- * Last changed in libpng 1.2.41 [December 22, 2009]
+ * Last changed in libpng 1.2.41 [December 23, 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/scripts/README.txt b/scripts/README.txt
index eaa8bcc..fef7e1a 100644
--- a/scripts/README.txt
+++ b/scripts/README.txt
@@ -1,5 +1,5 @@
 
-Makefiles for  libpng version 1.2.42rc02 - December 22, 2009
+Makefiles for  libpng version 1.2.42rc02 - December 23, 2009
 
  makefile.linux    =>  Linux/ELF makefile
                        (gcc, creates libpng12.so.0.1.2.42rc02)