diff --git a/CMakeLists.txt b/CMakeLists.txt
index 545a324a5..8267c1b9d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -209,7 +209,7 @@ configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng-config.in
 # SET UP LINKS
 if(PNG_SHARED)
   set_target_properties(${PNG_LIB_NAME} PROPERTIES
-#   VERSION 15.${PNGLIB_RELEASE}.1.5.0beta09
+#   VERSION 15.${PNGLIB_RELEASE}.1.5.0beta11
     VERSION 15.${PNGLIB_RELEASE}.0
     SOVERSION 15
     CLEAN_DIRECT_OUTPUT 1)
diff --git a/INSTALL b/INSTALL
index c7e24eb49..d6fbf61e3 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,5 +1,5 @@
 
-Installing libpng version 1.5.0beta09 - February 19, 2010
+Installing libpng version 1.5.0beta11 - March 3, 2010
 
 On Unix/Linux and similar systems, you can simply type
 
@@ -46,7 +46,7 @@ to have access to the zlib.h and zconf.h include files that
 correspond to the version of zlib that's installed.
 
 You can rename the directories that you downloaded (they
-might be called "libpng-1.5.0beta09" or "libpng15" and "zlib-1.2.3"
+might be called "libpng-1.5.0beta11" or "libpng15" and "zlib-1.2.3"
 or "zlib123") so that you have directories called "zlib" and "libpng".
 
 Your directory structure should look like this:
diff --git a/LICENSE b/LICENSE
index 12292085a..7434eb23d 100644
--- a/LICENSE
+++ b/LICENSE
@@ -10,7 +10,7 @@ this sentence.
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.5.0beta09, February 19, 2010, are
+libpng versions 1.2.6, August 15, 2004, through 1.5.0beta11, March 3, 2010, are
 Copyright (c) 2004, 2006-2007 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 @@ certification mark of the Open Source Initiative.
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-February 19, 2010
+March 3, 2010
diff --git a/Makefile.am b/Makefile.am
index 51fb15db4..9fd632852 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -73,7 +73,7 @@ EXTRA_DIST= \
 	${srcdir}/contrib/pngsuite/* \
 	${srcdir}/contrib/visupng/* \
 	$(TESTS) \
-	example.c libpng-1.5.0beta09.txt
+	example.c libpng-1.5.0beta11.txt
 
 CLEANFILES= pngout.png libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.pc libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@-config libpng.vers \
 libpng.sym
diff --git a/Makefile.in b/Makefile.in
index 674d45cbd..4e23b0d50 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -333,7 +333,7 @@ EXTRA_DIST = \
 	${srcdir}/contrib/pngsuite/* \
 	${srcdir}/contrib/visupng/* \
 	$(TESTS) \
-	example.c libpng-1.5.0beta09.txt
+	example.c libpng-1.5.0beta11.txt
 
 CLEANFILES = pngout.png libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.pc libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@-config libpng.vers \
 libpng.sym
diff --git a/README b/README
index 466120fbb..56b49620d 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng version 1.5.0beta09 - February 19, 2010 (shared library 15.0)
+README for libpng version 1.5.0beta11 - March 3, 2010 (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.
@@ -185,9 +185,9 @@ Files in this distribution:
        makefile.std     =>  Generic UNIX makefile (cc, creates static
                             libpng.a)
        makefile.elf     =>  Linux/ELF makefile symbol versioning,
-                            gcc, creates libpng15.so.15.1.5.0beta09)
+                            gcc, creates libpng15.so.15.1.5.0beta11)
        makefile.linux   =>  Linux/ELF makefile
-                            (gcc, creates libpng15.so.15.1.5.0beta09)
+                            (gcc, creates libpng15.so.15.1.5.0beta11)
        makefile.gcc     =>  Generic makefile (gcc, creates static libpng.a)
        makefile.knr     =>  Archaic UNIX Makefile that converts files with
                             ansi2knr (Requires ansi2knr.c from
@@ -209,12 +209,12 @@ Files in this distribution:
        makefile.openbsd =>  OpenBSD makefile
        makefile.sgi     =>  Silicon Graphics IRIX (cc, creates static lib)
        makefile.sggcc   =>  Silicon Graphics
-                            (gcc, creates libpng15.so.15.1.5.0beta09)
+                            (gcc, creates libpng15.so.15.1.5.0beta11)
        makefile.sunos   =>  Sun makefile
        makefile.solaris =>  Solaris 2.X makefile
-                            (gcc, creates libpng15.so.15.1.5.0beta09)
+                            (gcc, creates libpng15.so.15.1.5.0beta11)
        makefile.so9     =>  Solaris 9 makefile
-                            (gcc, creates libpng15.so.15.1.5.0beta09)
+                            (gcc, creates libpng15.so.15.1.5.0beta11)
        makefile.32sunu  =>  Sun Ultra 32-bit makefile
        makefile.64sunu  =>  Sun Ultra 64-bit makefile
        makefile.sco     =>  For SCO OSr5  ELF and Unixware 7 with Native cc
diff --git a/configure b/configure
index f7f56ac59..3162791cb 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.65 for libpng 1.5.0beta09.
+# Generated by GNU Autoconf 2.65 for libpng 1.5.0beta11.
 #
 # Report bugs to <png-mng-implement@lists.sourceforge.net>.
 #
@@ -701,8 +701,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='libpng'
 PACKAGE_TARNAME='libpng'
-PACKAGE_VERSION='1.5.0beta09'
-PACKAGE_STRING='libpng 1.5.0beta09'
+PACKAGE_VERSION='1.5.0beta11'
+PACKAGE_STRING='libpng 1.5.0beta11'
 PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net'
 PACKAGE_URL=''
 
@@ -1432,7 +1432,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures libpng 1.5.0beta09 to adapt to many kinds of systems.
+\`configure' configures libpng 1.5.0beta11 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1502,7 +1502,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of libpng 1.5.0beta09:";;
+     short | recursive ) echo "Configuration of libpng 1.5.0beta11:";;
    esac
   cat <<\_ACEOF
 
@@ -1607,7 +1607,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-libpng configure 1.5.0beta09
+libpng configure 1.5.0beta11
 generated by GNU Autoconf 2.65
 
 Copyright (C) 2009 Free Software Foundation, Inc.
@@ -2032,7 +2032,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by libpng $as_me 1.5.0beta09, which was
+It was created by libpng $as_me 1.5.0beta11, which was
 generated by GNU Autoconf 2.65.  Invocation command line was
 
   $ $0 $@
@@ -2840,7 +2840,7 @@ fi
 
 # Define the identity of the package.
  PACKAGE='libpng'
- VERSION='1.5.0beta09'
+ VERSION='1.5.0beta11'
 
 
 cat >>confdefs.h <<_ACEOF
@@ -2904,7 +2904,7 @@ fi
 
 
 
-PNGLIB_VERSION=1.5.0beta09
+PNGLIB_VERSION=1.5.0beta11
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=5
 PNGLIB_RELEASE=0
@@ -12027,7 +12027,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by libpng $as_me 1.5.0beta09, which was
+This file was extended by libpng $as_me 1.5.0beta11, which was
 generated by GNU Autoconf 2.65.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -12093,7 +12093,7 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-libpng config.status 1.5.0beta09
+libpng config.status 1.5.0beta11
 configured by $0, generated by GNU Autoconf 2.65,
   with options \\"\$ac_cs_config\\"
 
diff --git a/configure.ac b/configure.ac
index 3fbccca08..576444bd7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -18,12 +18,12 @@ AC_PREREQ(2.59)
 
 dnl Version number stuff here:
 
-AC_INIT([libpng], [1.5.0beta09], [png-mng-implement@lists.sourceforge.net])
+AC_INIT([libpng], [1.5.0beta11], [png-mng-implement@lists.sourceforge.net])
 AM_INIT_AUTOMAKE
 dnl stop configure from automagically running automake
 AM_MAINTAINER_MODE
 
-PNGLIB_VERSION=1.5.0beta09
+PNGLIB_VERSION=1.5.0beta11
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=5
 PNGLIB_RELEASE=0
diff --git a/contrib/gregbook/readpng2.c b/contrib/gregbook/readpng2.c
index f127ef58c..cc36027e0 100644
--- a/contrib/gregbook/readpng2.c
+++ b/contrib/gregbook/readpng2.c
@@ -66,7 +66,6 @@ static void readpng2_info_callback(png_structp png_ptr, png_infop info_ptr);
 static void readpng2_row_callback(png_structp png_ptr, png_bytep new_row,
                                  png_uint_32 row_num, int pass);
 static void readpng2_end_callback(png_structp png_ptr, png_infop info_ptr);
-static void readpng2_error_handler(png_structp png_ptr, png_const_charp msg);
 
 
 
@@ -102,7 +101,7 @@ int readpng2_init(mainprog_info *mainprog_ptr)
     /* could also replace libpng warning-handler (final NULL), but no need: */
 
     png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, mainprog_ptr,
-      readpng2_error_handler, NULL);
+      NULL, NULL);
     if (!png_ptr)
         return 4;   /* out of memory */
 
@@ -451,34 +450,3 @@ void readpng2_cleanup(mainprog_info *mainprog_ptr)
     mainprog_ptr->png_ptr = NULL;
     mainprog_ptr->info_ptr = NULL;
 }
-
-
-
-
-
-static void readpng2_error_handler(png_structp png_ptr, png_const_charp msg)
-{
-    mainprog_info  *mainprog_ptr;
-
-    /* This function, aside from the extra step of retrieving the "error
-     * pointer" (below) and the fact that it exists within the application
-     * rather than within libpng, is essentially identical to libpng's
-     * default error handler.  The second point is critical:  since both
-     * setjmp() and longjmp() are called from the same code, they are
-     * guaranteed to have compatible notions of how big a jmp_buf is,
-     * regardless of whether _BSD_SOURCE or anything else has (or has not)
-     * been defined. */
-
-    fprintf(stderr, "readpng2 libpng error: %s\n", msg);
-    fflush(stderr);
-
-    mainprog_ptr = png_get_error_ptr(png_ptr);
-    if (mainprog_ptr == NULL) {         /* we are completely hosed now */
-        fprintf(stderr,
-          "readpng2 severe error:  jmpbuf not recoverable; terminating.\n");
-        fflush(stderr);
-        exit(99);
-    }
-
-    png_longjmp(png_ptr, 1);
-}
diff --git a/contrib/gregbook/rpng-win.c b/contrib/gregbook/rpng-win.c
index 20209611e..543a0bbe3 100644
--- a/contrib/gregbook/rpng-win.c
+++ b/contrib/gregbook/rpng-win.c
@@ -24,6 +24,8 @@
     - 1.10:  enabled "message window"/console (thanks to David Geldreich)
     - 2.00:  dual-licensed (added GNU GPL)
     - 2.01:  fixed improper display of usage screen on PNG error(s)
+    - 2.02:  removed special error-handling which is no longer needed
+             because of the new libpng png_longjmp() feature in libpng-1.5.0.
 
   ---------------------------------------------------------------------------
 
diff --git a/contrib/gregbook/rpng-x.c b/contrib/gregbook/rpng-x.c
index 0a9817029..3ffd4d974 100644
--- a/contrib/gregbook/rpng-x.c
+++ b/contrib/gregbook/rpng-x.c
@@ -26,6 +26,8 @@
     - 1.14:  added support for X resources (thanks to Gerhard Niklasch)
     - 2.00:  dual-licensed (added GNU GPL)
     - 2.01:  fixed improper display of usage screen on PNG error(s)
+    - 2.02:  removed special error-handling which is no longer needed
+             because of the new libpng png_longjmp() feature in libpng-1.5.0.
 
   ---------------------------------------------------------------------------
 
diff --git a/contrib/gregbook/rpng2-win.c b/contrib/gregbook/rpng2-win.c
index 8c831db12..638024b66 100644
--- a/contrib/gregbook/rpng2-win.c
+++ b/contrib/gregbook/rpng2-win.c
@@ -32,7 +32,9 @@
     - 2.01:  fixed 64-bit typo in readpng2.c
     - 2.02:  fixed improper display of usage screen on PNG error(s); fixed
               unexpected-EOF and file-read-error cases
-    - 2.03:  removed runtime MMX-enabling/disabling and obsolete -mmx* options
+    - 2.03:  removed runtime MMX-enabling/disabling and obsolete -mmx* options;
+             removed special error-handling which is no longer needed
+             because of the new libpng png_longjmp() feature in libpng-1.5.0.
 
   ---------------------------------------------------------------------------
 
diff --git a/contrib/gregbook/rpng2-x.c b/contrib/gregbook/rpng2-x.c
index 238ec0b82..cde53eb5c 100644
--- a/contrib/gregbook/rpng2-x.c
+++ b/contrib/gregbook/rpng2-x.c
@@ -41,6 +41,8 @@
               unexpected-EOF and file-read-error cases; fixed Trace() cut-and-
               paste bugs
     - 2.03:  deleted runtime MMX-enabling/disabling and obsolete -mmx* options
+             removed special error-handling which is no longer needed
+             because of the new libpng png_longjmp() feature in libpng-1.5.0.
 
   ---------------------------------------------------------------------------
 
diff --git a/contrib/gregbook/wpng.c b/contrib/gregbook/wpng.c
index a06e3529e..753fef3ac 100644
--- a/contrib/gregbook/wpng.c
+++ b/contrib/gregbook/wpng.c
@@ -29,6 +29,8 @@
     - 1.04:  fixed DOS/OS2/Win32 detection, including partial Cygwin fix
               (see http://home.att.net/~perlspinr/diffs/GregBook_cygwin.diff)
     - 2.00:  dual-licensed (added GNU GPL)
+    - 2.01:  removed special error-handling which is no longer needed
+             because of the new libpng png_longjmp() feature in libpng-1.5.0.
 
         [REPORTED BUG (win32 only):  "contrib/gregbook/wpng.c - cmd line
          dose not work!  In order to do something useful I needed to redirect
diff --git a/contrib/gregbook/writepng.c b/contrib/gregbook/writepng.c
index 2b0e98c3b..1d67f89de 100644
--- a/contrib/gregbook/writepng.c
+++ b/contrib/gregbook/writepng.c
@@ -60,10 +60,6 @@
 #include "writepng.h"   /* typedefs, common macros, public prototypes */
 
 
-/* local prototype */
-
-static void writepng_error_handler(png_structp png_ptr, png_const_charp msg);
-
 
 
 void writepng_version_info(void)
@@ -90,7 +86,7 @@ int writepng_init(mainprog_info *mainprog_ptr)
     /* could also replace libpng warning-handler (final NULL), but no need: */
 
     png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, mainprog_ptr,
-      writepng_error_handler, NULL);
+      NULL, NULL);
     if (!png_ptr)
         return 4;   /* out of memory */
 
@@ -359,34 +355,3 @@ void writepng_cleanup(mainprog_info *mainprog_ptr)
     if (png_ptr && info_ptr)
         png_destroy_write_struct(&png_ptr, &info_ptr);
 }
-
-
-
-
-
-static void writepng_error_handler(png_structp png_ptr, png_const_charp msg)
-{
-    mainprog_info  *mainprog_ptr;
-
-    /* This function, aside from the extra step of retrieving the "error
-     * pointer" (below) and the fact that it exists within the application
-     * rather than within libpng, is essentially identical to libpng's
-     * default error handler.  The second point is critical:  since both
-     * setjmp() and longjmp() are called from the same code, they are
-     * guaranteed to have compatible notions of how big a jmp_buf is,
-     * regardless of whether _BSD_SOURCE or anything else has (or has not)
-     * been defined. */
-
-    fprintf(stderr, "writepng libpng error: %s\n", msg);
-    fflush(stderr);
-
-    mainprog_ptr = png_get_error_ptr(png_ptr);
-    if (mainprog_ptr == NULL) {         /* we are completely hosed now */
-        fprintf(stderr,
-          "writepng severe error:  jmpbuf not recoverable; terminating.\n");
-        fflush(stderr);
-        exit(99);
-    }
-
-    png_longjmp(png_ptr, 1);
-}
diff --git a/example.c b/example.c
index 8478aa01a..ff1e5d542 100644
--- a/example.c
+++ b/example.c
@@ -2,7 +2,7 @@
 #if 0 /* in case someone actually tries to compile this */
 
 /* example.c - an example of using libpng
- * Last changed in libpng 1.5.0 [February 19, 2010]
+ * Last changed in libpng 1.5.0 [March 3, 2010]
  * This file has been placed in the public domain by the authors.
  * Maintained 1998-2010 Glenn Randers-Pehrson
  * Maintained 1996, 1997 Andreas Dilger)
diff --git a/libpng-1.5.0beta09.txt b/libpng-1.5.0beta11.txt
similarity index 99%
rename from libpng-1.5.0beta09.txt
rename to libpng-1.5.0beta11.txt
index 1af5d42bb..5d8826b65 100644
--- a/libpng-1.5.0beta09.txt
+++ b/libpng-1.5.0beta11.txt
@@ -1,6 +1,6 @@
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.5.0beta09 - February 19, 2010
+ libpng version 1.5.0beta11 - March 3, 2010
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2009 Glenn Randers-Pehrson
@@ -11,7 +11,7 @@ libpng.txt - A description on how to use and modify libpng
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.5.0beta09 - February 19, 2010
+ libpng versions 0.97, January 1998, through 1.5.0beta11 - March 3, 2010
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2009 Glenn Randers-Pehrson
 
@@ -899,7 +899,7 @@ things.
 As of libpng version 1.2.9, png_set_expand_gray_1_2_4_to_8() was
 added.  It expands the sample depth without changing tRNS to alpha.
 
-As of libpng version 1.5.0beta09, not all possible expansions are supported.
+As of libpng version 1.5.0beta11, not all possible expansions are supported.
 
 In the following table, the 01 means grayscale with depth<8, 31 means
 indexed with depth<8, other numerals represent the color type, "T" means
@@ -3245,13 +3245,13 @@ Other rules can be inferred by inspecting the libpng source.
 
 XIII. Y2K Compliance in libpng
 
-February 19, 2010
+March 3, 2010
 
 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 1.5.0beta09 are Y2K compliant.  It is my belief that earlier
+upward through 1.5.0beta11 are Y2K compliant.  It is my belief that earlier
 versions were also Y2K compliant.
 
 Libpng only has three year fields.  One is a 2-byte unsigned integer that
diff --git a/libpng.3 b/libpng.3
index 820081cfd..fa9aaf414 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,6 +1,6 @@
-.TH LIBPNG 3 "February 19, 2010"
+.TH LIBPNG 3 "March 3, 2010"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.5.0beta09
+libpng \- Portable Network Graphics (PNG) Reference Library 1.5.0beta11
 .SH SYNOPSIS
 \fI\fB
 
@@ -789,7 +789,7 @@ Following is a copy of the libpng.txt file that accompanies libpng.
 .SH LIBPNG.TXT
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.5.0beta09 - February 19, 2010
+ libpng version 1.5.0beta11 - March 3, 2010
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2009 Glenn Randers-Pehrson
@@ -800,7 +800,7 @@ libpng.txt - A description on how to use and modify libpng
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.5.0beta09 - February 19, 2010
+ libpng versions 0.97, January 1998, through 1.5.0beta11 - March 3, 2010
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2009 Glenn Randers-Pehrson
 
@@ -1688,7 +1688,7 @@ things.
 As of libpng version 1.2.9, png_set_expand_gray_1_2_4_to_8() was
 added.  It expands the sample depth without changing tRNS to alpha.
 
-As of libpng version 1.5.0beta09, not all possible expansions are supported.
+As of libpng version 1.5.0beta11, not all possible expansions are supported.
 
 In the following table, the 01 means grayscale with depth<8, 31 means
 indexed with depth<8, other numerals represent the color type, "T" means
@@ -4034,13 +4034,13 @@ Other rules can be inferred by inspecting the libpng source.
 
 .SH XIII. Y2K Compliance in libpng
 
-February 19, 2010
+March 3, 2010
 
 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 1.5.0beta09 are Y2K compliant.  It is my belief that earlier
+upward through 1.5.0beta11 are Y2K compliant.  It is my belief that earlier
 versions were also Y2K compliant.
 
 Libpng only has three year fields.  One is a 2-byte unsigned integer that
@@ -4216,7 +4216,7 @@ the first widely used release:
  1.4.1beta01-03      14    10401  14.so.14.1[.0]
  1.4.1rc01           14    10401  14.so.14.1[.0]
  1.4.1beta04-12      14    10401  14.so.14.1[.0]
- 1.5.0beta01-09      15    10500  15.so.15.1[.0]
+ 1.5.0beta01-11      15    10500  15.so.15.1[.0]
 
 Henceforth the source version will match the shared-library minor
 and patch numbers; the shared-library major version number will be
@@ -4272,7 +4272,7 @@ possible without all of you.
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.5.0beta09 - February 19, 2010:
+Libpng version 1.5.0beta11 - March 3, 2010:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
 
@@ -4295,7 +4295,7 @@ this sentence.
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.5.0beta09, February 19, 2010, are
+libpng versions 1.2.6, August 15, 2004, through 1.5.0beta11, March 3, 2010, are
 Copyright (c) 2004,2006-2007 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
@@ -4394,7 +4394,7 @@ certification mark of the Open Source Initiative.
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-February 19, 2010
+March 3, 2010
 
 .\" end of man page
 
diff --git a/libpngpf.3 b/libpngpf.3
index 5b21774a5..d84d62000 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,6 +1,6 @@
-.TH LIBPNGPF 3 "February 19, 2010"
+.TH LIBPNGPF 3 "March 3, 2010"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.5.0beta09
+libpng \- Portable Network Graphics (PNG) Reference Library 1.5.0beta11
 (private functions)
 .SH SYNOPSIS
 \fB#include <png.h>\fP
diff --git a/png.5 b/png.5
index 33562e914..07ad0a936 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "February 19, 2010"
+.TH PNG 5 "March 3, 2010"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
diff --git a/png.c b/png.c
index f181b159e..724e6eca2 100644
--- a/png.c
+++ b/png.c
@@ -1,7 +1,7 @@
 
 /* png.c - location for general purpose libpng functions
  *
- * Last changed in libpng 1.5.0 [February 19, 2010]
+ * Last changed in libpng 1.5.0 [March 3, 2010]
  * Copyright (c) 1998-2010 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.)
@@ -18,7 +18,7 @@
 #include "pngpriv.h"
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_5_0beta09 Your_png_h_is_not_version_1_5_0beta09;
+typedef version_1_5_0beta11 Your_png_h_is_not_version_1_5_0beta11;
 
 /* Version information for C files.  This had better match the version
  * string defined in png.h.
@@ -552,13 +552,13 @@ png_get_copyright(png_structp png_ptr)
 #else
 #ifdef __STDC__
    return ((png_charp) PNG_STRING_NEWLINE \
-     "libpng version 1.5.0beta09 - February 19, 2010" PNG_STRING_NEWLINE \
+     "libpng version 1.5.0beta11 - March 3, 2010" PNG_STRING_NEWLINE \
      "Copyright (c) 1998-2010 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 1.5.0beta09 - February 19, 2010\
+      return ((png_charp) "libpng version 1.5.0beta11 - March 3, 2010\
       Copyright (c) 1998-2010 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 a9267cf5e..a2326680f 100644
--- a/png.h
+++ b/png.h
@@ -1,7 +1,7 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.5.0beta09 - February 19, 2010
+ * libpng version 1.5.0beta11 - March 3, 2010
  * Copyright (c) 1998-2010 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 1.5.0beta09 - February 19, 2010: Glenn
+ *  libpng versions 0.97, January 1998, through 1.5.0beta11 - March 3, 2010: Glenn
  *  See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -137,7 +137,7 @@
  *    1.4.1beta01-03          14    10401  14.so.14.1[.0]
  *    1.4.1rc01               14    10401  14.so.14.1[.0]
  *    1.4.1beta04-12          14    10401  14.so.14.1[.0]
- *    1.5.0beta01-09          15    10500  15.so.15.0[.0]
+ *    1.5.0beta01-11          15    10500  15.so.15.0[.0]
  *
  *    Henceforth the source version will match the shared-library major
  *    and minor numbers; the shared-library major version number will be
@@ -169,7 +169,7 @@
  *
  * This code is released under the libpng license.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.5.0beta09, February 19, 2010, are
+ * libpng versions 1.2.6, August 15, 2004, through 1.5.0beta11, March 3, 2010, are
  * Copyright (c) 2004, 2006-2010 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:
@@ -281,13 +281,13 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    February 19, 2010
+ *    March 3, 2010
  *
  *    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 1.5.0beta09 are Y2K compliant.  It is my belief that earlier
+ *    upward through 1.5.0beta11 are Y2K compliant.  It is my belief that earlier
  *    versions were also Y2K compliant.
  *
  *    Libpng only has three year fields.  One is a 2-byte unsigned integer
@@ -343,9 +343,9 @@
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.5.0beta09"
+#define PNG_LIBPNG_VER_STRING "1.5.0beta11"
 #define PNG_HEADER_VERSION_STRING \
-   " libpng version 1.5.0beta09 - February 19, 2010\n"
+   " libpng version 1.5.0beta11 - March 3, 2010\n"
 
 #define PNG_LIBPNG_VER_SONUM   15
 #define PNG_LIBPNG_VER_DLLNUM  15
@@ -358,7 +358,7 @@
  * PNG_LIBPNG_VER_STRING, omitting any leading zero:
  */
 
-#define PNG_LIBPNG_VER_BUILD  09
+#define PNG_LIBPNG_VER_BUILD  11
 
 /* Release Status */
 #define PNG_LIBPNG_BUILD_ALPHA    1
@@ -796,7 +796,7 @@ typedef void (*png_free_ptr) PNGARG((png_structp, png_voidp));
 /* This triggers a compiler error in png.c, if png.c and png.h
  * do not agree upon the version number.
  */
-typedef png_structp version_1_5_0beta09;
+typedef png_structp version_1_5_0beta11;
 
 typedef png_struct FAR * FAR * png_structpp;
 
diff --git a/pngerror.c b/pngerror.c
index d677fd8f5..9cc8ffa3f 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 1.5.0 [February 19, 2010]
+ * Last changed in libpng 1.5.0 [March 3, 2010]
  * Copyright (c) 1998-2010 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 1bfa25493..313f54a5d 100644
--- a/pngget.c
+++ b/pngget.c
@@ -1,7 +1,7 @@
 
 /* pngget.c - retrieval of values from info struct
  *
- * Last changed in libpng 1.4.1 [February 19, 2010]
+ * Last changed in libpng 1.4.1 [March 3, 2010]
  * Copyright (c) 1998-2010 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/pnginfo.h b/pnginfo.h
index e024bf462..bd31f185a 100644
--- a/pnginfo.h
+++ b/pnginfo.h
@@ -5,7 +5,7 @@
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
- * Last changed in libpng version 1.5.0 - February 19, 2010
+ * Last changed in libpng version 1.5.0 - March 3, 2010
  *
  * This code is released under the libpng license.
  * For conditions of distribution and use, see the disclaimer
diff --git a/pngmem.c b/pngmem.c
index b21ae153c..c9177f739 100644
--- a/pngmem.c
+++ b/pngmem.c
@@ -1,7 +1,7 @@
 
 /* pngmem.c - stub functions for memory allocation
  *
- * Last changed in libpng 1.5.0 [February 19, 2010]
+ * Last changed in libpng 1.5.0 [March 3, 2010]
  * Copyright (c) 1998-2010 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 1f4241ca5..cd46bbae1 100644
--- a/pngpread.c
+++ b/pngpread.c
@@ -1,7 +1,7 @@
 
 /* pngpread.c - read a png file in push mode
  *
- * Last changed in libpng 1.5.0 [February 19, 2010]
+ * Last changed in libpng 1.5.0 [March 3, 2010]
  * Copyright (c) 1998-2010 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/pngpriv.h b/pngpriv.h
index 8d30e6f0a..7826efb0a 100644
--- a/pngpriv.h
+++ b/pngpriv.h
@@ -1,7 +1,7 @@
 
 /* pngpriv.h - private declarations for use inside libpng
  *
- * libpng version 1.5.0beta09 - February 19, 2010
+ * libpng version 1.5.0beta11 - March 3, 2010
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2010 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngread.c b/pngread.c
index d8253ac2f..6340899c4 100644
--- a/pngread.c
+++ b/pngread.c
@@ -1,7 +1,7 @@
 
 /* pngread.c - read a PNG file
  *
- * Last changed in libpng 1.5.0 [February 19, 2010]
+ * Last changed in libpng 1.5.0 [March 3, 2010]
  * Copyright (c) 1998-2010 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 dcef8fc81..8d77ab347 100644
--- a/pngrio.c
+++ b/pngrio.c
@@ -1,7 +1,7 @@
 
 /* pngrio.c - functions for data input
  *
- * Last changed in libpng 1.5.0 [February 19, 2010]
+ * Last changed in libpng 1.5.0 [March 3, 2010]
  * Copyright (c) 1998-2010 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 add01b696..df4d61e9f 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 1.5.0 [February 19, 2010]
+ * Last changed in libpng 1.5.0 [March 3, 2010]
  * Copyright (c) 1998-2010 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 af918faae..3aa10feaa 100644
--- a/pngrutil.c
+++ b/pngrutil.c
@@ -1,7 +1,7 @@
 
 /* pngrutil.c - utilities to read a PNG file
  *
- * Last changed in libpng 1.4.1 [February 19, 2010]
+ * Last changed in libpng 1.4.1 [March 3, 2010]
  * Copyright (c) 1998-2010 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 385b82826..87723c9c0 100644
--- a/pngset.c
+++ b/pngset.c
@@ -1,7 +1,7 @@
 
 /* pngset.c - storage of image information into info struct
  *
- * Last changed in libpng 1.5.0 [February 19, 2010]
+ * Last changed in libpng 1.5.0 [March 3, 2010]
  * Copyright (c) 1998-2010 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/pngstruct.h b/pngstruct.h
index bd252b159..b5e96ed8b 100644
--- a/pngstruct.h
+++ b/pngstruct.h
@@ -5,7 +5,7 @@
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
- * Last changed in libpng version 1.5.0 - February 19, 2010
+ * Last changed in libpng version 1.5.0 - March 3, 2010
  *
  * This code is released under the libpng license.
  * For conditions of distribution and use, see the disclaimer
diff --git a/pngtest.c b/pngtest.c
index 9541cab1d..0d4e443a1 100644
--- a/pngtest.c
+++ b/pngtest.c
@@ -1,7 +1,7 @@
 
 /* pngtest.c - a simple test program to test libpng
  *
- * Last changed in libpng 1.5.0 [February 19, 2010]
+ * Last changed in libpng 1.5.0 [March 3, 2010]
  * Copyright (c) 1998-2010 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.)
@@ -1620,4 +1620,4 @@ main(int argc, char *argv[])
 }
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_5_0beta09 your_png_h_is_not_version_1_5_0beta09;
+typedef version_1_5_0beta11 your_png_h_is_not_version_1_5_0beta11;
diff --git a/pngtrans.c b/pngtrans.c
index 8c23b8e80..719b704ee 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 1.5.0 [February 19, 2010]
+ * Last changed in libpng 1.5.0 [March 3, 2010]
  * Copyright (c) 1998-2010 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 b183af4c4..643b66542 100644
--- a/pngwio.c
+++ b/pngwio.c
@@ -1,7 +1,7 @@
 
 /* pngwio.c - functions for data output
  *
- * Last changed in libpng 1.5.0 [February 19, 2010]
+ * Last changed in libpng 1.5.0 [March 3, 2010]
  * Copyright (c) 1998-2010 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 3b3ac2a70..9e0f0ec59 100644
--- a/pngwrite.c
+++ b/pngwrite.c
@@ -1,7 +1,7 @@
 
 /* pngwrite.c - general routines to write a PNG file
  *
- * Last changed in libpng 1.5.0 [February 19, 2010]
+ * Last changed in libpng 1.5.0 [March 3, 2010]
  * Copyright (c) 1998-2010 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 44b88cf15..77b0a21e9 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 1.5.0 [February 19, 2010]
+ * Last changed in libpng 1.5.0 [March 3, 2010]
  * Copyright (c) 1998-2010 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 167b4162c..164ec970b 100644
--- a/pngwutil.c
+++ b/pngwutil.c
@@ -1,7 +1,7 @@
 
 /* pngwutil.c - utilities to write a PNG file
  *
- * Last changed in libpng 1.5.0 [February 19, 2010]
+ * Last changed in libpng 1.5.0 [March 3, 2010]
  * Copyright (c) 1998-2010 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/xcode/libpng.xcodeproj/project.pbxproj b/projects/xcode/libpng.xcodeproj/project.pbxproj
index f5b96edf3..a39d61199 100644
--- a/projects/xcode/libpng.xcodeproj/project.pbxproj
+++ b/projects/xcode/libpng.xcodeproj/project.pbxproj
@@ -226,7 +226,7 @@
 				COPY_PHASE_STRIP = NO;
 				DYLIB_COMPATIBILITY_VERSION = 15;
 				DYLIB_CURRENT_VERSION = 15;
-				FRAMEWORK_VERSION = 1.5.0beta09;
+				FRAMEWORK_VERSION = 1.5.0beta11;
 				GCC_PRECOMPILE_PREFIX_HEADER = NO;
 				GCC_PREFIX_HEADER = "";
 				INFOPLIST_FILE = Info.plist;
@@ -244,7 +244,7 @@
 			buildSettings = {
 				DYLIB_COMPATIBILITY_VERSION = 15;
 				DYLIB_CURRENT_VERSION = 15;
-				FRAMEWORK_VERSION = 1.5.0beta09;
+				FRAMEWORK_VERSION = 1.5.0beta11;
 				GCC_PRECOMPILE_PREFIX_HEADER = NO;
 				GCC_PREFIX_HEADER = "";
 				INFOPLIST_FILE = Info.plist;
diff --git a/scripts/README.txt b/scripts/README.txt
index e7a0879b1..516f649d5 100644
--- a/scripts/README.txt
+++ b/scripts/README.txt
@@ -1,8 +1,8 @@
 
-Makefiles for  libpng version 1.5.0beta09 - February 19, 2010
+Makefiles for  libpng version 1.5.0beta11 - March 3, 2010
 
  makefile.linux    =>  Linux/ELF makefile
-                       (gcc, creates libpng15.so.15.1.5.0beta09)
+                       (gcc, creates libpng15.so.15.1.5.0beta11)
  makefile.gcc      =>  Generic makefile (gcc, creates static libpng.a)
  makefile.knr      =>  Archaic UNIX Makefile that converts files with
                        ansi2knr (Requires ansi2knr.c from
@@ -20,7 +20,7 @@ Makefiles for  libpng version 1.5.0beta09 - February 19, 2010
  makefile.dec      =>  DEC Alpha UNIX makefile
  makefile.dj2      =>  DJGPP 2 makefile
  makefile.elf      =>  Linux/ELF makefile symbol versioning,
-                       gcc, creates libpng15.so.15.1.5.0beta09)
+                       gcc, creates libpng15.so.15.1.5.0beta11)
  makefile.freebsd  =>  FreeBSD makefile
  makefile.gcc      =>  Generic gcc makefile
  makefile.hpgcc    =>  HPUX makefile using gcc
@@ -36,12 +36,12 @@ Makefiles for  libpng version 1.5.0beta09 - February 19, 2010
  makefile.os2      =>  OS/2 Makefile (gcc and emx, requires pngos2.def)
  makefile.sco      =>  For SCO OSr5  ELF and Unixware 7 with Native cc
  makefile.sggcc    =>  Silicon Graphics (gcc,
-                       creates libpng15.so.15.1.5.0beta09)
+                       creates libpng15.so.15.1.5.0beta11)
  makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
  makefile.solaris  =>  Solaris 2.X makefile (gcc,
-                       creates libpng15.so.15.1.5.0beta09)
+                       creates libpng15.so.15.1.5.0beta11)
  makefile.so9      =>  Solaris 9 makefile (gcc,
-                       creates libpng15.so.15.1.5.0beta09)
+                       creates libpng15.so.15.1.5.0beta11)
  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/libpng-config-head.in b/scripts/libpng-config-head.in
index 66f3c7617..87d90ad21 100755
--- a/scripts/libpng-config-head.in
+++ b/scripts/libpng-config-head.in
@@ -11,7 +11,7 @@
 
 # Modeled after libxml-config.
 
-version=1.5.0beta09
+version=1.5.0beta11
 prefix=""
 libdir=""
 libs=""
diff --git a/scripts/libpng.pc.in b/scripts/libpng.pc.in
index bbfaa0b43..9ffd28e44 100644
--- a/scripts/libpng.pc.in
+++ b/scripts/libpng.pc.in
@@ -5,6 +5,6 @@ includedir=@includedir@/libpng15
 
 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.5.0beta09
+Version: 1.5.0beta11
 Libs: -L${libdir} -lpng15
 Cflags: -I${includedir}
diff --git a/scripts/makefile.ne12bsd b/scripts/makefile.ne12bsd
index 32acf45b7..e337eee5d 100644
--- a/scripts/makefile.ne12bsd
+++ b/scripts/makefile.ne12bsd
@@ -17,7 +17,7 @@ INCSDIR=${LOCALBASE}/include/libpng15
 
 LIB=	png15
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.5.0beta09
+SHLIB_MINOR=	1.5.0beta11
 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 37b584742..788e0b3da 100644
--- a/scripts/makefile.netbsd
+++ b/scripts/makefile.netbsd
@@ -17,7 +17,7 @@ INCSDIR=${LOCALBASE}/include
 
 LIB=	png
 SHLIB_MAJOR=	3
-SHLIB_MINOR=	1.5.0beta09
+SHLIB_MINOR=	1.5.0beta11
 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 81d2c6918..b5e8ab0f0 100644
--- a/scripts/makefile.openbsd
+++ b/scripts/makefile.openbsd
@@ -11,7 +11,7 @@ LIBDIR=	${PREFIX}/lib
 MANDIR= ${PREFIX}/man/cat
 
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.5.0beta09
+SHLIB_MINOR=	1.5.0beta11
 
 LIB=	png
 SRCS=	png.c pngerror.c pngget.c pngmem.c pngpread.c \
diff --git a/scripts/png32ce.def b/scripts/png32ce.def
index e5b7dce5e..c8e41da55 100644
--- a/scripts/png32ce.def
+++ b/scripts/png32ce.def
@@ -15,7 +15,7 @@ LIBRARY lpngce
  png_get_int_32
 
 EXPORTS
-;Version 1.5.0beta09
+;Version 1.5.0beta11
   png_build_grayscale_palette  @1
 ;  png_check_sig        @2
   png_chunk_error      @3
diff --git a/scripts/pngos2.def b/scripts/pngos2.def
index 08935d3bc..c68e7da9e 100644
--- a/scripts/pngos2.def
+++ b/scripts/pngos2.def
@@ -2,7 +2,7 @@
 ; PNG.LIB module definition file for OS/2
 ;----------------------------------------
 
-; Version 1.5.0beta09
+; Version 1.5.0beta11
 
 LIBRARY		PNG
 DESCRIPTION	"PNG image compression library for OS/2"
diff --git a/scripts/pngwin.def b/scripts/pngwin.def
index baf5b503e..19b720ae1 100644
--- a/scripts/pngwin.def
+++ b/scripts/pngwin.def
@@ -5,7 +5,7 @@
 LIBRARY
 
 EXPORTS
-;Version 1.5.0beta09
+;Version 1.5.0beta11
   png_build_grayscale_palette
   png_chunk_error
   png_chunk_warning