diff --git a/chapter01/changelog.xml b/chapter01/changelog.xml
index 38ce732fe..266ad803b 100644
--- a/chapter01/changelog.xml
+++ b/chapter01/changelog.xml
@@ -39,6 +39,10 @@
     <listitem>
       <para>2010-05-21</para>
       <itemizedlist>
+        <listitem>
+          <para>[matthew] - Upgrade to Zlib-1.2.5. Fixes
+          <ulink url="&lfs-ticket-root;2638">#2638</ulink>.</para>
+        </listitem>
         <listitem>
           <para>[matthew] - Upgrade to Linux-2.6.34. Fixes
           <ulink url="&lfs-ticket-root;2628">#2628</ulink>.</para>
diff --git a/packages.ent b/packages.ent
index edcb89916..adfa4c63b 100644
--- a/packages.ent
+++ b/packages.ent
@@ -551,10 +551,10 @@
 <!ENTITY vim-lang-md5 "d8884786979e0e520c112faf2e176f05">
 <!ENTITY vim-lang-home "http://www.vim.org">
 
-<!ENTITY zlib-version "1.2.4">
-<!ENTITY zlib-size "472 KB">
+<!ENTITY zlib-version "1.2.5">
+<!ENTITY zlib-size "532 KB">
 <!ENTITY zlib-url "http://www.zlib.net/zlib-&zlib-version;.tar.bz2">
-<!ENTITY zlib-md5 "763c6a0b4ad1cdf5549e3ab3f140f4cb">
+<!ENTITY zlib-md5 "be1e89810e66150f5b0327984d8625a0">
 <!ENTITY zlib-home "http://www.zlib.net/">
 <!ENTITY zlib-ch6-du "2.8 MB">
 <!ENTITY zlib-ch6-sbu "less than 0.1 SBU">
diff --git a/patches.ent b/patches.ent
index caa4e2e65..eb57d18c4 100644
--- a/patches.ent
+++ b/patches.ent
@@ -102,9 +102,3 @@
 <!ENTITY tar-overflow-patch "tar-&tar-version;-overflow_fix-1.patch">
 <!ENTITY tar-overflow-patch-md5 "1912ec36d2a0e2b96678651cf583ce6f">
 <!ENTITY tar-overflow-patch-size "1.7 KB"> 
-
-
-<!ENTITY zlib-fpic-patch "zlib-&zlib-version;-fPIC-1.patch">
-<!ENTITY zlib-fpic-patch-md5 "545d60b20bfde6f53023de44438cef59">
-<!ENTITY zlib-fpic-patch-size "21 KB">
-