diff --git a/ANNOUNCE b/ANNOUNCE
index 2645db7..5de4eed 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,35 +1,31 @@
-Libpng 1.6.21rc03 - January 13, 2016
+Libpng 1.6.21 - January 15, 2016
 
-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.
+This is a public release of libpng, intended for use in production codes.
 
 Files available for download:
 
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script
 
-   1.6.21rc03.tar.xz (LZMA-compressed, recommended)
-   1.6.21rc03.tar.gz
+   libpng-1.6.21.tar.xz (LZMA-compressed, recommended)
+   libpng-1.6.21.tar.gz
 
 Source files with CRLF line endings (for Windows), without the
 "configure" script
 
-   /scratch/glennrp/Libpng16/lp1621r03.7z  (LZMA-compressed, recommended)
-   /scratch/glennrp/Libpng16/lp1621r03.zip
+   /scratch/glennrp/Libpng16/lpng1621.7z  (LZMA-compressed, recommended)
+   /scratch/glennrp/Libpng16/lpng1621.zip
 
 Other information:
 
-   1.6.21rc03-README.txt
-   1.6.21rc03-LICENSE.txt
-   libpng-1.6.21rc03-*.asc (armored detached GPG signatures)
+   libpng-1.6.21-README.txt
+   libpng-1.6.21-LICENSE.txt
+   libpng-1.6.21-*.asc (armored detached GPG signatures)
 
 Changes since the last public release (1.6.20):
 
-Version 1.6.21beta01 [December 11, 2015]
   Fixed syntax "$(command)" in tests/pngstest that some shells other than
     bash could not parse (Bug report by Nelson Beebe). Use `command` instead.
-
-Version 1.6.21beta02 [December 14, 2015]
   Moved png_check_keyword() from pngwutil.c to pngset.c
   Removed LE/BE dependencies in pngvalid, to 'fix' the current problem
     in the BigEndian tests by not testing it, making the BE code the same 
@@ -37,8 +33,6 @@
   Fixes to pngvalid for various reduced build configurations (eliminate unused
     statics) and a fix for the case in rgb_to_gray when the digitize option
     reduces graylo to 0, producing a large error.
-
-Version 1.6.21beta03 [December 18, 2015]
   Widened the 'limit' check on the internally calculated error limits in
     the 'DIGITIZE' case (the code used prior to 1.7 for rgb_to_gray error
     checks) and changed the check to only operate in non-release builds
@@ -50,17 +44,11 @@
     David Drysdale as a result of reports from UBSAN in clang 3.8).
   This changes pngvalid to use BE random numbers; this used to produce
     errors but these should not be fixed as a result of the previous changes.
-
-Version 1.6.21rc01 [January 4, 2016]
   In projects/vstudio, combined readme.txt and WARNING into README.txt
-
-Version 1.6.21rc02 [January 7, 2016]
   Relocated assert() in contrib/tools/pngfix.c, bug found by American
     Fuzzy Lop, reported by Brian Carpenter.
   Marked 'limit' UNUSED in transform_range_check().  This only affects
     release builds.
-
-Version 1.6.21rc03 [January 13, 2016]
   Worked around a false-positive Coverity issue in pngvalid.c.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
diff --git a/CHANGES b/CHANGES
index 1da6b8c..8e589f6 100644
--- a/CHANGES
+++ b/CHANGES
@@ -5481,7 +5481,7 @@
   Marked 'limit' UNUSED in transform_range_check().  This only affects
     release builds.
 
-Version 1.6.21rc03 [January 13, 2016]
+Version 1.6.21 [January 15, 2016]
   Worked around a false-positive Coverity issue in pngvalid.c.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 88ee4e9..2f180b5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -261,7 +261,7 @@
 # SET UP LINKS
 if(PNG_SHARED)
   set_target_properties(${PNG_LIB_NAME} PROPERTIES
-#   VERSION 16.${PNGLIB_RELEASE}.1.6.21rc02
+#   VERSION 16.${PNGLIB_RELEASE}.1.6.21
     VERSION 16.${PNGLIB_RELEASE}.0
     SOVERSION 16
     CLEAN_DIRECT_OUTPUT 1)
diff --git a/LICENSE b/LICENSE
index b58e779..fd93b1b 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 1.6.21rc02, January 7, 2016, are
+libpng versions 1.0.7, July 1, 2000, through 1.6.21, January 15, 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
-January 7, 2016
+January 15, 2016
diff --git a/README b/README
index 0fe2e1c..176928f 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng version 1.6.21rc02 - January 7, 2016 (shared library 16.0)
+README for libpng version 1.6.21 - January 15, 2016 (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/configure.ac b/configure.ac
index 779d206..8af866d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -18,7 +18,7 @@
 
 dnl Version number stuff here:
 
-AC_INIT([libpng],[1.6.21rc02],[png-mng-implement@lists.sourceforge.net])
+AC_INIT([libpng],[1.6.21],[png-mng-implement@lists.sourceforge.net])
 AC_CONFIG_MACRO_DIR([scripts])
 
 # libpng does not follow GNU file name conventions (hence 'foreign')
@@ -39,7 +39,7 @@
 dnl AM_PREREQ([1.11.2])
 dnl stop configure from automagically running automake
 
-PNGLIB_VERSION=1.6.21rc02
+PNGLIB_VERSION=1.6.21
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=6
 PNGLIB_RELEASE=21
diff --git a/contrib/libtests/pngvalid.c b/contrib/libtests/pngvalid.c
index 9063b69..55d0945 100644
--- a/contrib/libtests/pngvalid.c
+++ b/contrib/libtests/pngvalid.c
@@ -1,7 +1,7 @@
 
 /* pngvalid.c - validate libpng by constructing then reading png files.
  *
- * Last changed in libpng 1.6.21 [(PENDING RELEASE)]
+ * Last changed in libpng 1.6.21 [January 15, 2016]
  * Copyright (c) 2014-2016 Glenn Randers-Pehrson
  * Written by John Cunningham Bowler
  *
diff --git a/contrib/tools/pngfix.c b/contrib/tools/pngfix.c
index bcf35b0..b2043e3 100644
--- a/contrib/tools/pngfix.c
+++ b/contrib/tools/pngfix.c
@@ -2,7 +2,7 @@
  *
  * Copyright (c) 2014-2016 John Cunningham Bowler
  *
- * Last changed in libpng 1.6.21 [(PENDING RELEASE)]
+ * Last changed in libpng 1.6.21 [January 15, 2016]
  *
  * This code is released under the libpng license.
  * For conditions of distribution and use, see the disclaimer
diff --git a/libpng-manual.txt b/libpng-manual.txt
index 6eab788..1e838bd 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 1.6.21rc02 - January 7, 2016
+ libpng version 1.6.21 - January 15, 2016
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2016 Glenn Randers-Pehrson
@@ -11,7 +11,7 @@
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.6.21rc02 - January 7, 2016
+ libpng versions 0.97, January 1998, through 1.6.21 - January 15, 2016
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2016 Glenn Randers-Pehrson
 
@@ -5328,7 +5328,7 @@
 an official declaration.
 
 This is your unofficial assurance that libpng from version 0.71 and
-upward through 1.6.21rc02 are Y2K compliant.  It is my belief that earlier
+upward through 1.6.21 are Y2K compliant.  It is my belief that earlier
 versions were also Y2K compliant.
 
 Libpng only has two year fields.  One is a 2-byte unsigned integer
diff --git a/libpng.3 b/libpng.3
index 47ad31a..b1f0c93 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,6 +1,6 @@
-.TH LIBPNG 3 "January 7, 2016"
+.TH LIBPNG 3 "January 15, 2016"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.6.21rc02
+libpng \- Portable Network Graphics (PNG) Reference Library 1.6.21
 .SH SYNOPSIS
 \fB
 #include <png.h>\fP
@@ -508,7 +508,7 @@
 .SH LIBPNG.TXT
 libpng-manual.txt - A description on how to use and modify libpng
 
- libpng version 1.6.21rc02 - January 7, 2016
+ libpng version 1.6.21 - January 15, 2016
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2016 Glenn Randers-Pehrson
@@ -519,7 +519,7 @@
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.6.21rc02 - January 7, 2016
+ libpng versions 0.97, January 1998, through 1.6.21 - January 15, 2016
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2016 Glenn Randers-Pehrson
 
@@ -5836,7 +5836,7 @@
 an official declaration.
 
 This is your unofficial assurance that libpng from version 0.71 and
-upward through 1.6.21rc02 are Y2K compliant.  It is my belief that earlier
+upward through 1.6.21 are Y2K compliant.  It is my belief that earlier
 versions were also Y2K compliant.
 
 Libpng only has two year fields.  One is a 2-byte unsigned integer
@@ -5994,7 +5994,7 @@
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.6.21rc02 - January 7, 2016:
+Libpng version 1.6.21 - January 15, 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).
 
@@ -6019,7 +6019,7 @@
 
 This code is released under the libpng license.
 
-libpng versions 1.0.7, July 1, 2000, through 1.6.21rc02, January 7, 2016, are
+libpng versions 1.0.7, July 1, 2000, through 1.6.21, January 15, 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
@@ -6118,7 +6118,7 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-January 7, 2016
+January 15, 2016
 
 .\" end of man page
 
diff --git a/libpngpf.3 b/libpngpf.3
index 5809b0d..a76a0c5 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,6 +1,6 @@
-.TH LIBPNGPF 3 "January 7, 2016"
+.TH LIBPNGPF 3 "January 15, 2016"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.6.21rc02
+libpng \- Portable Network Graphics (PNG) Reference Library 1.6.21
 (private functions)
 .SH SYNOPSIS
 \fB#include \fI"pngpriv.h"
diff --git a/png.5 b/png.5
index 003ad1f..5a44ea6 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "January 7, 2016"
+.TH PNG 5 "January 15, 2016"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
diff --git a/png.c b/png.c
index 9cdd16c..1d1bde5 100644
--- a/png.c
+++ b/png.c
@@ -14,7 +14,7 @@
 #include "pngpriv.h"
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef png_libpng_version_1_6_21rc02 Your_png_h_is_not_version_1_6_21rc02;
+typedef png_libpng_version_1_6_21 Your_png_h_is_not_version_1_6_21;
 
 /* Tells libpng that we have already handled the first "num_bytes" bytes
  * of the PNG file signature.  If the PNG data is embedded into another
@@ -775,14 +775,14 @@
 #else
 #  ifdef __STDC__
    return PNG_STRING_NEWLINE \
-      "libpng version 1.6.21rc02 - January 7, 2016" PNG_STRING_NEWLINE \
+      "libpng version 1.6.21 - January 15, 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 1.6.21rc02 - January 7, 2016\
+   return "libpng version 1.6.21 - January 15, 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/png.h b/png.h
index 77655e0..123201d 100644
--- a/png.h
+++ b/png.h
@@ -1,7 +1,7 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.6.21rc02, January 7, 2016
+ * libpng version 1.6.21, January 15, 2016
  *
  * Copyright (c) 1998-2002,2004,2006-2016 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 0.89, June 1996, through 0.96, May 1997: Andreas Dilger
- *   libpng versions 0.97, January 1998, through 1.6.21rc02, January 7, 2016:
+ *   libpng versions 0.97, January 1998, through 1.6.21, January 15, 2016:
  *     Glenn Randers-Pehrson.
  *   See also "Contributing Authors", below.
  */
@@ -25,7 +25,7 @@
  *
  * This code is released under the libpng license.
  *
- * libpng versions 1.0.7, July 1, 2000, through 1.6.21rc02, January 7, 2016, are
+ * libpng versions 1.0.7, July 1, 2000, through 1.6.21, January 15, 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
@@ -214,13 +214,13 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    January 7, 2016
+ *    January 15, 2016
  *
  *    Since the PNG Development group is an ad-hoc body, we can't make
  *    an official declaration.
  *
  *    This is your unofficial assurance that libpng from version 0.71 and
- *    upward through 1.6.21rc02 are Y2K compliant.  It is my belief that
+ *    upward through 1.6.21 are Y2K compliant.  It is my belief that
  *    earlier versions were also Y2K compliant.
  *
  *    Libpng only has two year fields.  One is a 2-byte unsigned integer
@@ -282,9 +282,9 @@
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.6.21rc02"
+#define PNG_LIBPNG_VER_STRING "1.6.21"
 #define PNG_HEADER_VERSION_STRING \
-     " libpng version 1.6.21rc02 - January 7, 2016\n"
+     " libpng version 1.6.21 - January 15, 2016\n"
 
 #define PNG_LIBPNG_VER_SONUM   16
 #define PNG_LIBPNG_VER_DLLNUM  16
@@ -298,7 +298,7 @@
  * PNG_LIBPNG_VER_STRING, omitting any leading zero:
  */
 
-#define PNG_LIBPNG_VER_BUILD  02
+#define PNG_LIBPNG_VER_BUILD  0
 
 /* Release Status */
 #define PNG_LIBPNG_BUILD_ALPHA    1
@@ -315,7 +315,7 @@
 #define PNG_LIBPNG_BUILD_SPECIAL 32 /* Cannot be OR'ed with
                                        PNG_LIBPNG_BUILD_PRIVATE */
 
-#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_RC
+#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_STABLE
 
 /* Careful here.  At one time, Guy wanted to use 082, but that would be octal.
  * We must not include leading zeros.
@@ -433,7 +433,7 @@
 /* This triggers a compiler error in png.c, if png.c and png.h
  * do not agree upon the version number.
  */
-typedef char* png_libpng_version_1_6_21rc02;
+typedef char* png_libpng_version_1_6_21;
 
 /* Basic control structions.  Read libpng-manual.txt or libpng.3 for more info.
  *
diff --git a/pngconf.h b/pngconf.h
index 13677ac..9344654 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,7 +1,7 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.6.21rc02, January 7, 2016
+ * libpng version 1.6.21, January 15, 2016
  *
  * Copyright (c) 1998-2002,2004,2006-2015 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngpriv.h b/pngpriv.h
index e210a01..1295b51 100644
--- a/pngpriv.h
+++ b/pngpriv.h
@@ -1,7 +1,7 @@
 
 /* pngpriv.h - private declarations for use inside libpng
  *
- * Last changed in libpng 1.6.21 [(PENDING RELEASE)]
+ * Last changed in libpng 1.6.21 [January 15, 2016]
  * Copyright (c) 1998-2002,2004,2006-2015 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.)
diff --git a/pngset.c b/pngset.c
index 2103fe6..4bd5ab3 100644
--- a/pngset.c
+++ b/pngset.c
@@ -1,7 +1,7 @@
 
 /* pngset.c - storage of image information into info struct
  *
- * Last changed in libpng 1.6.21 [(PENDING RELEASE)]
+ * Last changed in libpng 1.6.21 [January 15, 2016]
  * 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.)
diff --git a/pngtest.c b/pngtest.c
index 3934693..57724e0 100644
--- a/pngtest.c
+++ b/pngtest.c
@@ -2070,4 +2070,4 @@
 #endif
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef png_libpng_version_1_6_21rc02 Your_png_h_is_not_version_1_6_21rc02;
+typedef png_libpng_version_1_6_21 Your_png_h_is_not_version_1_6_21;
diff --git a/pngwutil.c b/pngwutil.c
index 4aa7ffa..8cf4c2b 100644
--- a/pngwutil.c
+++ b/pngwutil.c
@@ -1,7 +1,7 @@
 
 /* pngwutil.c - utilities to write a PNG file
  *
- * Last changed in libpng 1.6.21 [(PENDING RELEASE)]
+ * Last changed in libpng 1.6.21 [January 15, 2016]
  * Copyright (c) 1998-2002,2004,2006-2015 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.)
diff --git a/projects/vstudio/README.txt b/projects/vstudio/README.txt
index a5eee97..642a42b 100644
--- a/projects/vstudio/README.txt
+++ b/projects/vstudio/README.txt
@@ -1,7 +1,7 @@
 
 VisualStudio instructions
 
-libpng version 1.6.21rc02 - January 7, 2016
+libpng version 1.6.21 - January 15, 2016
 
 Copyright (c) 2010,2013,2015 Glenn Randers-Pehrson
 
diff --git a/projects/vstudio/zlib.props b/projects/vstudio/zlib.props
index 298f8da..f06f8a0 100644
--- a/projects/vstudio/zlib.props
+++ b/projects/vstudio/zlib.props
@@ -2,7 +2,7 @@
 <!--
  * zlib.props - location of zlib source
  *
- * libpng version 1.6.21rc02 - January 7, 2016
+ * libpng version 1.6.21 - January 15, 2016
  *
  * Copyright (c) 1998-2011 Glenn Randers-Pehrson
  *
diff --git a/scripts/README.txt b/scripts/README.txt
index 345a74f..25951aa 100644
--- a/scripts/README.txt
+++ b/scripts/README.txt
@@ -1,9 +1,9 @@
 
-Makefiles for  libpng version 1.6.21rc02 - January 7, 2016
+Makefiles for  libpng version 1.6.21 - January 15, 2016
 
 pnglibconf.h.prebuilt       =>  Stores configuration settings
  makefile.linux    =>  Linux/ELF makefile
-                       (gcc, creates libpng16.so.16.1.6.21rc02)
+                       (gcc, creates libpng16.so.16.1.6.21)
  makefile.gcc      =>  Generic makefile (gcc, creates static libpng.a)
  makefile.knr      =>  Archaic UNIX Makefile that converts files with
                        ansi2knr (Requires ansi2knr.c from
@@ -33,12 +33,12 @@
  makefile.os2      =>  OS/2 Makefile (gcc and emx, requires libpng.def)
  makefile.sco      =>  For SCO OSr5  ELF and Unixware 7 with Native cc
  makefile.sggcc    =>  Silicon Graphics (gcc,
-                       creates libpng16.so.16.1.6.21rc02)
+                       creates libpng16.so.16.1.6.21)
  makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
  makefile.solaris  =>  Solaris 2.X makefile (gcc,
-                       creates libpng16.so.16.1.6.21rc02)
+                       creates libpng16.so.16.1.6.21)
  makefile.so9      =>  Solaris 9 makefile (gcc,
-                       creates libpng16.so.16.1.6.21rc02)
+                       creates libpng16.so.16.1.6.21)
  makefile.std      =>  Generic UNIX makefile (cc, creates static libpng.a)
  makefile.sunos    =>  Sun makefile
  makefile.32sunu   =>  Sun Ultra 32-bit makefile
diff --git a/scripts/def.c b/scripts/def.c
index 58268fd..d7e21a1 100644
--- a/scripts/def.c
+++ b/scripts/def.c
@@ -21,7 +21,7 @@
 PNG_DFN "OS2 CODE PRELOAD MOVEABLE DISCARDABLE"
 PNG_DFN ""
 PNG_DFN "EXPORTS"
-PNG_DFN ";Version 1.6.21rc02"
+PNG_DFN ";Version 1.6.21"
 
 #define PNG_EXPORTA(ordinal, type, name, args, attributes)\
         PNG_DFN "@" SYMBOL_PREFIX "@@" name "@"
diff --git a/scripts/libpng-config-head.in b/scripts/libpng-config-head.in
index 6d95d9e..0c3dd74 100644
--- a/scripts/libpng-config-head.in
+++ b/scripts/libpng-config-head.in
@@ -11,7 +11,7 @@
 
 # Modeled after libxml-config.
 
-version=1.6.21rc02
+version=1.6.21
 prefix=""
 libdir=""
 libs=""
diff --git a/scripts/libpng.pc.in b/scripts/libpng.pc.in
index d36ef9c..b97114c 100644
--- a/scripts/libpng.pc.in
+++ b/scripts/libpng.pc.in
@@ -5,6 +5,6 @@
 
 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.6.21rc02
+Version: 1.6.21
 Libs: -L${libdir} -lpng16
 Cflags: -I${includedir}
diff --git a/scripts/makefile.ne12bsd b/scripts/makefile.ne12bsd
index 215a64f..f4cebc2 100644
--- a/scripts/makefile.ne12bsd
+++ b/scripts/makefile.ne12bsd
@@ -17,7 +17,7 @@
 
 LIB=	png16
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.6.21rc02
+SHLIB_MINOR=	1.6.21
 SRCS=	png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
 	pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
 	pngwtran.c pngmem.c pngerror.c pngpread.c
diff --git a/scripts/makefile.netbsd b/scripts/makefile.netbsd
index 3460647..da93b65 100644
--- a/scripts/makefile.netbsd
+++ b/scripts/makefile.netbsd
@@ -17,7 +17,7 @@
 
 LIB=	png
 SHLIB_MAJOR=	16
-SHLIB_MINOR=	1.6.21rc02
+SHLIB_MINOR=	1.6.21
 SRCS=	png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
 	pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
 	pngwtran.c pngmem.c pngerror.c pngpread.c
diff --git a/scripts/makefile.openbsd b/scripts/makefile.openbsd
index af6b2c3..0696751 100644
--- a/scripts/makefile.openbsd
+++ b/scripts/makefile.openbsd
@@ -11,7 +11,7 @@
 MANDIR= ${PREFIX}/man/cat
 
 SHLIB_MAJOR=	16
-SHLIB_MINOR=	1.6.21rc02
+SHLIB_MINOR=	1.6.21
 
 LIB=	png
 SRCS=	png.c pngerror.c pngget.c pngmem.c pngpread.c \
diff --git a/scripts/pnglibconf.h.prebuilt b/scripts/pnglibconf.h.prebuilt
index 88dff39..a1ef17f 100644
--- a/scripts/pnglibconf.h.prebuilt
+++ b/scripts/pnglibconf.h.prebuilt
@@ -1,8 +1,8 @@
-/* libpng 1.6.21rc02 STANDARD API DEFINITION */
+/* libpng 1.6.21 STANDARD API DEFINITION */
 
 /* pnglibconf.h - library build configuration */
 
-/* Libpng version 1.6.21rc02 - January 7, 2016 */
+/* Libpng version 1.6.21 - January 15, 2016 */
 
 /* Copyright (c) 1998-2015 Glenn Randers-Pehrson */
 
diff --git a/scripts/symbols.def b/scripts/symbols.def
index 631d827..4c35fd7 100644
--- a/scripts/symbols.def
+++ b/scripts/symbols.def
@@ -1,4 +1,4 @@
-;Version 1.6.21rc02
+;Version 1.6.21
 ;--------------------------------------------------------------
 ; LIBPNG symbol list as a Win32 DEF file
 ; Contains all the symbols that can be exported from libpng