diff --git a/chapter01/changelog.xml b/chapter01/changelog.xml
index 3f3a58ab9..bfe8c1adc 100644
--- a/chapter01/changelog.xml
+++ b/chapter01/changelog.xml
@@ -39,6 +39,10 @@
     <listitem>
       <para>2007-04-16</para>
       <itemizedlist>
+        <listitem>
+          <para>[matthew] - Upgrade to M4-1.4.9. Fixes
+          <ulink url="&lfs-ticket-root;1983">#1983</ulink>.</para>
+        </listitem>
         <listitem>
           <para>[matthew] - Upgrade to Linux-2.6.20.7. Fixes
           <ulink url="&lfs-ticket-root;1986">#1986</ulink>.</para>
diff --git a/packages.ent b/packages.ent
index 3a28ab2e2..c9a848b51 100644
--- a/packages.ent
+++ b/packages.ent
@@ -313,10 +313,10 @@
 <!ENTITY linux-headers-ch6-du "286 MB">
 <!ENTITY linux-headers-ch6-sbu "less than 0.1 SBU">
 
-<!ENTITY m4-version "1.4.8">
-<!ENTITY m4-size "567 KB">
+<!ENTITY m4-version "1.4.9">
+<!ENTITY m4-size "596 KB">
 <!ENTITY m4-url "&gnu;m4/m4-&m4-version;.tar.bz2">
-<!ENTITY m4-md5 "6bbf917e5d8fab20b38d43868c3944d3">
+<!ENTITY m4-md5 "bcfaf47194491a7a8b8d3c2811570b93">
 <!ENTITY m4-home "&gnu-software;m4/">
 <!ENTITY m4-ch5-du "5 MB">
 <!ENTITY m4-ch5-sbu "less than 0.1 SBU">