diff --git a/libpng-1.6.15-apng.patch b/libpng-1.6.16-apng.patch
similarity index 95%
rename from libpng-1.6.15-apng.patch
rename to libpng-1.6.16-apng.patch
index e783e76..76ba9cc 100644
--- a/libpng-1.6.15-apng.patch
+++ b/libpng-1.6.16-apng.patch
@@ -1,7 +1,7 @@
-diff -Naru libpng-1.6.15.org/png.h libpng-1.6.15/png.h
---- libpng-1.6.15.org/png.h	2014-11-21 22:01:00.976984872 +0900
-+++ libpng-1.6.15/png.h	2014-11-21 22:01:01.049987206 +0900
-@@ -473,6 +473,10 @@
+diff -Naru libpng-1.6.16.org/png.h libpng-1.6.16/png.h
+--- libpng-1.6.16.org/png.h	2014-12-23 13:43:20.602727303 +0900
++++ libpng-1.6.16/png.h	2014-12-23 13:43:20.681729791 +0900
+@@ -476,6 +476,10 @@
  #   include "pnglibconf.h"
  #endif
  
@@ -12,7 +12,7 @@ diff -Naru libpng-1.6.15.org/png.h libpng-1.6.15/png.h
  #ifndef PNG_VERSION_INFO_ONLY
     /* Machine specific configuration. */
  #  include "pngconf.h"
-@@ -563,6 +567,17 @@
+@@ -566,6 +570,17 @@
   * See pngconf.h for base types that vary by machine/system
   */
  
@@ -30,7 +30,7 @@ diff -Naru libpng-1.6.15.org/png.h libpng-1.6.15/png.h
  /* This triggers a compiler error in png.c, if png.c and png.h
   * do not agree upon the version number.
   */
-@@ -883,6 +898,10 @@
+@@ -886,6 +901,10 @@
  #define PNG_INFO_sPLT 0x2000   /* ESR, 1.0.6 */
  #define PNG_INFO_sCAL 0x4000   /* ESR, 1.0.6 */
  #define PNG_INFO_IDAT 0x8000   /* ESR, 1.0.6 */
@@ -41,7 +41,7 @@ diff -Naru libpng-1.6.15.org/png.h libpng-1.6.15/png.h
  
  /* This is used for the transformation routines, as some of them
   * change these values for the row.  It also should enable using
-@@ -920,6 +939,10 @@
+@@ -923,6 +942,10 @@
  #ifdef PNG_PROGRESSIVE_READ_SUPPORTED
  typedef PNG_CALLBACK(void, *png_progressive_info_ptr, (png_structp, png_infop));
  typedef PNG_CALLBACK(void, *png_progressive_end_ptr, (png_structp, png_infop));
@@ -52,7 +52,7 @@ diff -Naru libpng-1.6.15.org/png.h libpng-1.6.15/png.h
  
  /* The following callback receives png_uint_32 row_number, int pass for the
   * png_bytep data of the row.  When transforming an interlaced image the
-@@ -3258,6 +3281,74 @@
+@@ -3261,6 +3284,74 @@
  /*******************************************************************************
   *  END OF HARDWARE AND SOFTWARE OPTIONS
   ******************************************************************************/
@@ -127,7 +127,7 @@ diff -Naru libpng-1.6.15.org/png.h libpng-1.6.15/png.h
  
  /* Maintainer: Put new public prototypes here ^, in libpng.3, in project
   * defs, and in scripts/symbols.def.
-@@ -3267,7 +3358,11 @@
+@@ -3270,7 +3361,11 @@
   * one to use is one more than this.)
   */
  #ifdef PNG_EXPORT_LAST_ORDINAL
@@ -139,9 +139,9 @@ diff -Naru libpng-1.6.15.org/png.h libpng-1.6.15/png.h
  #endif
  
  #ifdef __cplusplus
-diff -Naru libpng-1.6.15.org/pngget.c libpng-1.6.15/pngget.c
---- libpng-1.6.15.org/pngget.c	2014-11-21 22:01:00.977984904 +0900
-+++ libpng-1.6.15/pngget.c	2014-11-21 22:01:01.050987238 +0900
+diff -Naru libpng-1.6.16.org/pngget.c libpng-1.6.16/pngget.c
+--- libpng-1.6.16.org/pngget.c	2014-12-23 13:43:20.603727334 +0900
++++ libpng-1.6.16/pngget.c	2014-12-23 13:43:20.682729822 +0900
 @@ -1210,4 +1210,166 @@
  #  endif
  #endif
@@ -309,9 +309,9 @@ diff -Naru libpng-1.6.15.org/pngget.c libpng-1.6.15/pngget.c
 +}
 +#endif /* PNG_APNG_SUPPORTED */
  #endif /* READ || WRITE */
-diff -Naru libpng-1.6.15.org/pnginfo.h libpng-1.6.15/pnginfo.h
---- libpng-1.6.15.org/pnginfo.h	2014-11-21 22:01:00.977984904 +0900
-+++ libpng-1.6.15/pnginfo.h	2014-11-21 22:01:01.050987238 +0900
+diff -Naru libpng-1.6.16.org/pnginfo.h libpng-1.6.16/pnginfo.h
+--- libpng-1.6.16.org/pnginfo.h	2014-12-23 13:43:20.603727334 +0900
++++ libpng-1.6.16/pnginfo.h	2014-12-23 13:43:20.682729822 +0900
 @@ -256,5 +256,18 @@
     png_bytepp row_pointers;        /* the image bits */
  #endif
@@ -331,9 +331,9 @@ diff -Naru libpng-1.6.15.org/pnginfo.h libpng-1.6.15/pnginfo.h
 +
  };
  #endif /* PNGINFO_H */
-diff -Naru libpng-1.6.15.org/pngpread.c libpng-1.6.15/pngpread.c
---- libpng-1.6.15.org/pngpread.c	2014-11-21 22:01:00.977984904 +0900
-+++ libpng-1.6.15/pngpread.c	2014-11-21 22:01:01.051987269 +0900
+diff -Naru libpng-1.6.16.org/pngpread.c libpng-1.6.16/pngpread.c
+--- libpng-1.6.16.org/pngpread.c	2014-12-23 13:43:20.603727334 +0900
++++ libpng-1.6.16/pngpread.c	2014-12-23 13:43:20.683729854 +0900
 @@ -219,6 +219,109 @@
  
     chunk_name = png_ptr->chunk_name;
@@ -597,9 +597,9 @@ diff -Naru libpng-1.6.15.org/pngpread.c libpng-1.6.15/pngpread.c
  png_voidp PNGAPI
  png_get_progressive_ptr(png_const_structrp png_ptr)
  {
-diff -Naru libpng-1.6.15.org/pngpriv.h libpng-1.6.15/pngpriv.h
---- libpng-1.6.15.org/pngpriv.h	2014-11-21 22:01:00.978984936 +0900
-+++ libpng-1.6.15/pngpriv.h	2014-11-21 22:01:01.051987269 +0900
+diff -Naru libpng-1.6.16.org/pngpriv.h libpng-1.6.16/pngpriv.h
+--- libpng-1.6.16.org/pngpriv.h	2014-12-23 13:43:20.604727366 +0900
++++ libpng-1.6.16/pngpriv.h	2014-12-23 13:43:20.683729854 +0900
 @@ -555,6 +555,10 @@
  #define PNG_HAVE_CHUNK_AFTER_IDAT 0x2000 /* Have another chunk after IDAT */
                     /*             0x4000 (unused) */
@@ -676,9 +676,9 @@ diff -Naru libpng-1.6.15.org/pngpriv.h libpng-1.6.15/pngpriv.h
  /* Added at libpng version 1.4.0 */
  #ifdef PNG_COLORSPACE_SUPPORTED
  /* These internal functions are for maintaining the colorspace structure within
-diff -Naru libpng-1.6.15.org/pngread.c libpng-1.6.15/pngread.c
---- libpng-1.6.15.org/pngread.c	2014-11-21 22:01:00.979984968 +0900
-+++ libpng-1.6.15/pngread.c	2014-11-21 22:01:01.052987301 +0900
+diff -Naru libpng-1.6.16.org/pngread.c libpng-1.6.16/pngread.c
+--- libpng-1.6.16.org/pngread.c	2014-12-23 13:43:20.605727397 +0900
++++ libpng-1.6.16/pngread.c	2014-12-23 13:43:20.684729885 +0900
 @@ -158,6 +158,9 @@
  
        else if (chunk_name == png_IDAT)
@@ -780,10 +780,10 @@ diff -Naru libpng-1.6.15.org/pngread.c libpng-1.6.15/pngread.c
  /* Optional call to update the users info_ptr structure */
  void PNGAPI
  png_read_update_info(png_structrp png_ptr, png_inforp info_ptr)
-diff -Naru libpng-1.6.15.org/pngrutil.c libpng-1.6.15/pngrutil.c
---- libpng-1.6.15.org/pngrutil.c	2014-11-21 22:01:00.980985000 +0900
-+++ libpng-1.6.15/pngrutil.c	2014-11-21 22:01:01.053987333 +0900
-@@ -818,6 +818,11 @@
+diff -Naru libpng-1.6.16.org/pngrutil.c libpng-1.6.16/pngrutil.c
+--- libpng-1.6.16.org/pngrutil.c	2014-12-23 13:43:20.607727460 +0900
++++ libpng-1.6.16/pngrutil.c	2014-12-23 13:43:20.686729948 +0900
+@@ -819,6 +819,11 @@
     filter_type = buf[11];
     interlace_type = buf[12];
  
@@ -1114,9 +1114,9 @@ diff -Naru libpng-1.6.15.org/pngrutil.c libpng-1.6.15/pngrutil.c
 +#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
 +#endif /* PNG_READ_APNG_SUPPORTED */
  #endif /* READ */
-diff -Naru libpng-1.6.15.org/pngset.c libpng-1.6.15/pngset.c
---- libpng-1.6.15.org/pngset.c	2014-11-21 22:01:00.980985000 +0900
-+++ libpng-1.6.15/pngset.c	2014-11-21 22:01:01.054987365 +0900
+diff -Naru libpng-1.6.16.org/pngset.c libpng-1.6.16/pngset.c
+--- libpng-1.6.16.org/pngset.c	2014-12-23 13:43:20.607727460 +0900
++++ libpng-1.6.16/pngset.c	2014-12-23 13:43:20.686729948 +0900
 @@ -240,6 +240,11 @@
     info_ptr->pixel_depth = (png_byte)(info_ptr->channels * info_ptr->bit_depth);
  
@@ -1277,9 +1277,9 @@ diff -Naru libpng-1.6.15.org/pngset.c libpng-1.6.15/pngset.c
  #ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
  static png_byte
  check_location(png_const_structrp png_ptr, int location)
-diff -Naru libpng-1.6.15.org/pngstruct.h libpng-1.6.15/pngstruct.h
---- libpng-1.6.15.org/pngstruct.h	2014-11-21 22:01:00.981985032 +0900
-+++ libpng-1.6.15/pngstruct.h	2014-11-21 22:01:01.054987365 +0900
+diff -Naru libpng-1.6.16.org/pngstruct.h libpng-1.6.16/pngstruct.h
+--- libpng-1.6.16.org/pngstruct.h	2014-12-23 13:43:20.608727492 +0900
++++ libpng-1.6.16/pngstruct.h	2014-12-23 13:43:20.686729948 +0900
 @@ -409,6 +409,27 @@
     png_byte filter_type;
  #endif
@@ -1308,9 +1308,9 @@ diff -Naru libpng-1.6.15.org/pngstruct.h libpng-1.6.15/pngstruct.h
  /* New members added in libpng-1.2.0 */
  
  /* New members added in libpng-1.0.2 but first enabled by default in 1.2.0 */
-diff -Naru libpng-1.6.15.org/pngtest.c libpng-1.6.15/pngtest.c
---- libpng-1.6.15.org/pngtest.c	2014-11-21 22:01:00.981985032 +0900
-+++ libpng-1.6.15/pngtest.c	2014-11-21 22:01:01.054987365 +0900
+diff -Naru libpng-1.6.16.org/pngtest.c libpng-1.6.16/pngtest.c
+--- libpng-1.6.16.org/pngtest.c	2014-12-23 13:43:20.608727492 +0900
++++ libpng-1.6.16/pngtest.c	2014-12-23 13:43:20.687729980 +0900
 @@ -849,6 +849,10 @@
     png_uint_32 width, height;
     int num_pass = 1, pass;
@@ -1433,9 +1433,9 @@ diff -Naru libpng-1.6.15.org/pngtest.c libpng-1.6.15/pngtest.c
     for (pass = 0; pass < num_pass; pass++)
     {
        pngtest_debug1("Writing row data for pass %d", pass);
-diff -Naru libpng-1.6.15.org/pngwrite.c libpng-1.6.15/pngwrite.c
---- libpng-1.6.15.org/pngwrite.c	2014-11-21 22:01:00.982985064 +0900
-+++ libpng-1.6.15/pngwrite.c	2014-11-21 22:01:01.055987397 +0900
+diff -Naru libpng-1.6.16.org/pngwrite.c libpng-1.6.16/pngwrite.c
+--- libpng-1.6.16.org/pngwrite.c	2014-12-23 13:43:20.609727523 +0900
++++ libpng-1.6.16/pngwrite.c	2014-12-23 13:43:20.687729980 +0900
 @@ -127,6 +127,10 @@
      * application continues writing the PNG.  So check the 'invalid' flag here
      * too.
@@ -1503,9 +1503,9 @@ diff -Naru libpng-1.6.15.org/pngwrite.c libpng-1.6.15/pngwrite.c
  
  #ifdef PNG_SIMPLIFIED_WRITE_SUPPORTED
  #ifdef PNG_STDIO_SUPPORTED /* currently required for png_image_write_* */
-diff -Naru libpng-1.6.15.org/pngwutil.c libpng-1.6.15/pngwutil.c
---- libpng-1.6.15.org/pngwutil.c	2014-11-21 22:01:00.982985064 +0900
-+++ libpng-1.6.15/pngwutil.c	2014-11-21 22:01:01.056987429 +0900
+diff -Naru libpng-1.6.16.org/pngwutil.c libpng-1.6.16/pngwutil.c
+--- libpng-1.6.16.org/pngwutil.c	2014-12-23 13:43:20.610727555 +0900
++++ libpng-1.6.16/pngwutil.c	2014-12-23 13:43:20.688730012 +0900
 @@ -901,6 +901,11 @@
     /* Write the chunk */
     png_write_complete_chunk(png_ptr, png_IHDR, buf, (png_size_t)13);
@@ -1672,9 +1672,9 @@ diff -Naru libpng-1.6.15.org/pngwutil.c libpng-1.6.15/pngwutil.c
 +}
 +#endif /* PNG_WRITE_APNG_SUPPORTED */
  #endif /* WRITE */
-diff -Naru libpng-1.6.15.org/scripts/symbols.def libpng-1.6.15/scripts/symbols.def
---- libpng-1.6.15.org/scripts/symbols.def	2014-11-21 22:01:00.988985256 +0900
-+++ libpng-1.6.15/scripts/symbols.def	2014-11-21 22:01:01.062987621 +0900
+diff -Naru libpng-1.6.16.org/scripts/symbols.def libpng-1.6.16/scripts/symbols.def
+--- libpng-1.6.16.org/scripts/symbols.def	2014-12-23 13:43:20.616727744 +0900
++++ libpng-1.6.16/scripts/symbols.def	2014-12-23 13:43:20.693730169 +0900
 @@ -249,3 +249,23 @@
   png_set_check_for_invalid_index @242
   png_get_palette_max @243
diff --git a/libpng.spec b/libpng.spec
index 50eb7cf..5004116 100644
--- a/libpng.spec
+++ b/libpng.spec
@@ -1,6 +1,6 @@
 %define apiver %(echo %version | cut -d. -f1-2 | tr -d .)
 Name:          libpng
-Version:       1.6.15
+Version:       1.6.16
 Release:       1mamba
 Summary:       A library of functions for manipulating PNG image format files
 Group:         System/Libraries
@@ -125,6 +125,9 @@ ln -s libpng%{apiver}.so %{buildroot}%{_prefix}/lib/libpng.so
 %endif
 
 %changelog
+* Wed Dec 24 2014 Automatic Build System <autodist@mambasoft.it> 1.6.16-1mamba
+- automatic version update by autodist
+
 * Tue Nov 25 2014 Automatic Build System <autodist@mambasoft.it> 1.6.15-1mamba
 - automatic version update by autodist