diff --git a/scripts/README.txt b/scripts/README.txt
index e6825168619f232f8e6091acb42e2ab29e89cf25..ac64741179684caeec6b1640c3951b59a636e1b9 100644
--- a/scripts/README.txt
+++ b/scripts/README.txt
@@ -1,5 +1,5 @@
 
-Makefiles for  libpng version 1.6.0beta03 - December 21, 2011
+Makefiles for  libpng version 1.6.0beta03 - December 22, 2011
 
 pnglibconf.h.prebuilt       =>  Stores configuration settings
  makefile.linux    =>  Linux/ELF makefile
diff --git a/scripts/def.dfn b/scripts/def.dfn
index 5fd752593475683b6a07e6d3beb9bbfd5faef530..f9918631dec2f514893c9d18e1ecf6cbf346418c 100644
--- a/scripts/def.dfn
+++ b/scripts/def.dfn
@@ -1,6 +1,6 @@
 /* def.dfn - define format of libpng.def
  *
- * Last changed in libpng version 1.5.0 [(PENDING RELEASE)]
+ * Last changed in libpng version 1.5.7 [December 15, 2011]
  * Copyright (c) 2010-2011 Glenn Randers-Pehrson
  *
  * This code is released under the libpng license.
diff --git a/scripts/pnglibconf.h.prebuilt b/scripts/pnglibconf.h.prebuilt
index 8a6587be24ec90ff49be08093e32abf27ef32b53..de7a01d7bd4ae33d4326d2c7c0ccacb0211e319f 100644
--- a/scripts/pnglibconf.h.prebuilt
+++ b/scripts/pnglibconf.h.prebuilt
@@ -3,7 +3,7 @@
 
 /* pnglibconf.h - library build configuration */
 
-/* Libpng 1.6.0beta03 - December 21, 2011 */
+/* Libpng 1.6.0beta03 - December 22, 2011 */
 
 /* Copyright (c) 1998-2011 Glenn Randers-Pehrson */
 
diff --git a/scripts/symbols.def b/scripts/symbols.def
index 98e4bb41bb1a123bcdc90bb654844ca22fa8cd67..6f724dd2962fd2d1f67a316beaeb0a65b9176efd 100644
--- a/scripts/symbols.def
+++ b/scripts/symbols.def
@@ -205,7 +205,7 @@ EXPORTS
  png_get_y_offset_inches @197
  png_get_pHYs_dpi @198
  png_get_io_state @199
- png_get_io_chunk_name @200
+;png_get_io_chunk_name @200
  png_get_uint_32 @201
  png_get_uint_16 @202
  png_get_int_32 @203
@@ -246,3 +246,4 @@ EXPORTS
  png_image_free @238
  png_image_write_to_file @239
  png_image_write_to_stdio @240
+ png_convert_to_rfc1123_buffer @241