diff --git a/GRRLIB/lib/png/png.c b/GRRLIB/lib/png/png.c
index aecfd5c..6808c5c 100644
--- a/GRRLIB/lib/png/png.c
+++ b/GRRLIB/lib/png/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_5_11 Your_png_h_is_not_version_1_5_11;
+typedef png_libpng_version_1_5_12 Your_png_h_is_not_version_1_5_12;
 
 /* 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
@@ -655,13 +655,13 @@ png_get_copyright(png_const_structp png_ptr)
 #else
 #  ifdef __STDC__
    return PNG_STRING_NEWLINE \
-     "libpng version 1.5.11 - June 14, 2012" PNG_STRING_NEWLINE \
+     "libpng version 1.5.12 - July 11, 2012" PNG_STRING_NEWLINE \
      "Copyright (c) 1998-2012 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 1.5.11 - June 14, 2012\
+      return "libpng version 1.5.12 - July 11, 2012\
       Copyright (c) 1998-2012 Glenn Randers-Pehrson\
       Copyright (c) 1996-1997 Andreas Dilger\
       Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";
diff --git a/GRRLIB/lib/png/png.h b/GRRLIB/lib/png/png.h
index b1c9e72..4c37e58 100644
--- a/GRRLIB/lib/png/png.h
+++ b/GRRLIB/lib/png/png.h
@@ -1,7 +1,7 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.5.11 - June 14, 2012
+ * libpng version 1.5.12 - July 11, 2012
  * Copyright (c) 1998-2012 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 1.5.11 - June 14, 2012: Glenn
+ *   libpng versions 0.97, January 1998, through 1.5.12 - July 11, 2012: Glenn
  *   See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -177,6 +177,7 @@
  *    1.5.11beta01            15    10511  15.so.15.11[.0]
  *    1.5.11rc01-05           15    10511  15.so.15.11[.0]
  *    1.5.11                  15    10511  15.so.15.11[.0]
+ *    1.5.12                  15    10512  15.so.15.12[.0]
  *
  *   Henceforth the source version will match the shared-library major
  *   and minor numbers; the shared-library major version number will be
@@ -208,7 +209,7 @@
  *
  * This code is released under the libpng license.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.5.11, June 14, 2012, are
+ * libpng versions 1.2.6, August 15, 2004, through 1.5.12, July 11, 2012, are
  * Copyright (c) 2004, 2006-2012 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:
@@ -320,13 +321,13 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    June 14, 2012
+ *    July 11, 2012
  *
  *    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 1.5.11 are Y2K compliant.  It is my belief that
+ *    upward through 1.5.12 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
@@ -385,9 +386,9 @@
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.5.11"
+#define PNG_LIBPNG_VER_STRING "1.5.12"
 #define PNG_HEADER_VERSION_STRING \
-     " libpng version 1.5.11 - June 14, 2012\n"
+     " libpng version 1.5.12 - July 11, 2012\n"
 
 #define PNG_LIBPNG_VER_SONUM   15
 #define PNG_LIBPNG_VER_DLLNUM  15
@@ -395,7 +396,7 @@
 /* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
 #define PNG_LIBPNG_VER_MAJOR   1
 #define PNG_LIBPNG_VER_MINOR   5
-#define PNG_LIBPNG_VER_RELEASE 11
+#define PNG_LIBPNG_VER_RELEASE 12
 
 /* This should match the numeric part of the final component of
  * PNG_LIBPNG_VER_STRING, omitting any leading zero:
@@ -426,7 +427,7 @@
  * version 1.0.0 was mis-numbered 100 instead of 10000).  From
  * version 1.0.1 it's    xxyyzz, where x=major, y=minor, z=release
  */
-#define PNG_LIBPNG_VER 10511 /* 1.5.11 */
+#define PNG_LIBPNG_VER 10512 /* 1.5.12 */
 
 /* Library configuration: these options cannot be changed after
  * the library has been built.
@@ -548,7 +549,7 @@ extern "C" {
 /* 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_5_11;
+typedef char* png_libpng_version_1_5_12;
 
 /* Three color definitions.  The order of the red, green, and blue, (and the
  * exact size) is not important, although the size of the fields need to
diff --git a/GRRLIB/lib/png/pngconf.h b/GRRLIB/lib/png/pngconf.h
index 314fcc6..5c3eb14 100644
--- a/GRRLIB/lib/png/pngconf.h
+++ b/GRRLIB/lib/png/pngconf.h
@@ -1,7 +1,7 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.5.11 - June 14, 2012
+ * libpng version 1.5.12 - July 11, 2012
  *
  * Copyright (c) 1998-2012 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)