diff --git a/chapter01/changelog.xml b/chapter01/changelog.xml
index 727d3f9ac..5fb3ea90d 100644
--- a/chapter01/changelog.xml
+++ b/chapter01/changelog.xml
@@ -40,6 +40,10 @@
     <listitem>
       <para>2012-01-30</para>
       <itemizedlist>
+        <listitem>
+          <para>[matthew] - Upgrade to Zlib-1.2.6. Fixes
+          <ulink url="&lfs-ticket-root;3009">#3009</ulink>.</para>
+        </listitem>
         <listitem>
           <para>[matthew] - Move Xz to before GRUB so that the latter can
           support compressed kernel images.</para>
diff --git a/chapter01/whatsnew.xml b/chapter01/whatsnew.xml
index 76e689459..1c7536bef 100644
--- a/chapter01/whatsnew.xml
+++ b/chapter01/whatsnew.xml
@@ -208,9 +208,9 @@
     <!--<listitem>
       <para>XZ-Utils &xz-version;</para>
     </listitem>-->
-    <!--<listitem>
+    <listitem>
       <para>Zlib &zlib-version;</para>
-    </listitem>-->
+    </listitem>
   </itemizedlist>
 
   <!--<itemizedlist>
diff --git a/chapter06/zlib.xml b/chapter06/zlib.xml
index 7461858ad..1dfa3a9bc 100644
--- a/chapter06/zlib.xml
+++ b/chapter06/zlib.xml
@@ -41,28 +41,9 @@
   <sect2 role="installation">
     <title>Installation of Zlib</title>
 
-    <para>First, fix a typo in the package header file:</para>
-
-<screen><userinput remap="pre">sed -i 's/ifdef _LARGEFILE64_SOURCE/ifndef _LARGEFILE64_SOURCE/' zlib.h</userinput></screen>
-
     <para>Prepare Zlib for compilation:</para>
 
-<screen><userinput remap="configure">CFLAGS='-mstackrealign -fPIC -O3' ./configure --prefix=/usr</userinput></screen>
-
-    <variablelist>
-      <title>The meaning of the new configure environment variable:</title>
-
-      <varlistentry>
-        <term><envar>CFLAGS='-mstackrealign -fPIC -O3'</envar></term>
-        <listitem>
-          <para>Setting CFLAGS overrides the default optimization in the
-          package to prevent some run time errors.  Note that the -mstackrealign
-          may cause build failures in non-Intel architecture systems.</para>
-        </listitem>
-      </varlistentry>
-    </variablelist>
-
-
+<screen><userinput remap="configure">./configure --prefix=/usr</userinput></screen>
 
     <para>Compile the package:</para>
 
diff --git a/packages.ent b/packages.ent
index cce92da0e..7c94f3ffc 100644
--- a/packages.ent
+++ b/packages.ent
@@ -570,10 +570,10 @@
 <!ENTITY xz-ch6-du "13 MB">
 <!ENTITY xz-ch6-sbu "0.4 SBU">
 
-<!ENTITY zlib-version "1.2.5">
-<!ENTITY zlib-size "532 KB">
+<!ENTITY zlib-version "1.2.6">
+<!ENTITY zlib-size "490 KB">
 <!ENTITY zlib-url "http://www.zlib.net/zlib-&zlib-version;.tar.bz2">
-<!ENTITY zlib-md5 "be1e89810e66150f5b0327984d8625a0">
+<!ENTITY zlib-md5 "dc2cfa0d2313ca77224b4d932b2911e9">
 <!ENTITY zlib-home "http://www.zlib.net/">
 <!ENTITY zlib-ch6-du "2.8 MB">
 <!ENTITY zlib-ch6-sbu "less than 0.1 SBU">