diff --git a/libpng-1.4.1beta01.txt b/libpng-1.4.1beta01.txt
index efaa37194..6adf72ebb 100644
--- a/libpng-1.4.1beta01.txt
+++ b/libpng-1.4.1beta01.txt
@@ -1,6 +1,6 @@
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.4.1beta01 - January 3, 2010
+ libpng version 1.4.1beta01 - January 7, 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 1.4.1beta01 - January 3, 2010
+ libpng versions 0.97, January 1998, through 1.4.1beta01 - January 7, 2010
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2009 Glenn Randers-Pehrson
 
@@ -260,6 +260,15 @@ libpng know that there are some bytes missing from the start of the file.
 
     png_set_sig_bytes(png_ptr, number);
 
+You can change the zlib compression buffer size to be used while
+reading compressed data with
+
+    png_set_compression_buffer_size(png_ptr, buffer_size);
+
+where the default size is 8192 bytes.  Note that the buffer size
+is changed immediately and the buffer is reallocated immediately,
+instead of setting a flag to be acted upon later.
+
 Setting up callback code
 
 You can set up a callback function to handle any unknown chunks in the
@@ -3222,7 +3231,7 @@ Other rules can be inferred by inspecting the libpng source.
 
 XIII. Y2K Compliance in libpng
 
-January 3, 2010
+January 7, 2010
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
diff --git a/libpng.3 b/libpng.3
index 6e6517951..eee69997d 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,4 +1,4 @@
-.TH LIBPNG 3 "January 3, 2010"
+.TH LIBPNG 3 "January 7, 2010"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.4.1beta01
 .SH SYNOPSIS
@@ -777,7 +777,7 @@ 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 1.4.1beta01 - January 3, 2010
+ libpng version 1.4.1beta01 - January 7, 2010
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2009 Glenn Randers-Pehrson
@@ -788,7 +788,7 @@ libpng.txt - A description on how to use and modify libpng
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.4.1beta01 - January 3, 2010
+ libpng versions 0.97, January 1998, through 1.4.1beta01 - January 7, 2010
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2009 Glenn Randers-Pehrson
 
@@ -1037,6 +1037,15 @@ libpng know that there are some bytes missing from the start of the file.
 
     png_set_sig_bytes(png_ptr, number);
 
+You can change the zlib compression buffer size to be used while
+reading compressed data with
+
+    png_set_compression_buffer_size(png_ptr, buffer_size);
+
+where the default size is 8192 bytes.  Note that the buffer size
+is changed immediately and the buffer is reallocated immediately,
+instead of setting a flag to be acted upon later.
+
 .SS Setting up callback code
 
 You can set up a callback function to handle any unknown chunks in the
@@ -3999,7 +4008,7 @@ Other rules can be inferred by inspecting the libpng source.
 
 .SH XIII. Y2K Compliance in libpng
 
-January 3, 2010
+January 7, 2010
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
@@ -4233,7 +4242,7 @@ possible without all of you.
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.4.1beta01 - January 3, 2010:
+Libpng version 1.4.1beta01 - January 7, 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).
 
@@ -4256,7 +4265,7 @@ this sentence.
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.4.1beta01, January 3, 2010, are
+libpng versions 1.2.6, August 15, 2004, through 1.4.1beta01, January 7, 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
@@ -4355,7 +4364,7 @@ certification mark of the Open Source Initiative.
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-January 3, 2010
+January 7, 2010
 
 .\" end of man page