diff --git a/chapter01/changelog.xml b/chapter01/changelog.xml
index 10c0e1eba..cc7e21ed6 100644
--- a/chapter01/changelog.xml
+++ b/chapter01/changelog.xml
@@ -36,6 +36,16 @@
     </listitem>
 
 -->
+    <listitem>
+      <para>2012-06-06</para>
+      <itemizedlist>
+         <listitem>
+           <para>[matthew] - Upgrade to Bison-2.5.1.  Fixes
+           <ulink url="&lfs-ticket-root;3112">#3112</ulink>.</para>
+         </listitem>
+      </itemizedlist>
+    </listitem>
+
     <listitem>
       <para>2012-06-05</para>
       <itemizedlist>
diff --git a/chapter01/whatsnew.xml b/chapter01/whatsnew.xml
index ed3f5021e..0b041f9a9 100644
--- a/chapter01/whatsnew.xml
+++ b/chapter01/whatsnew.xml
@@ -40,9 +40,9 @@
     <!--<listitem>
       <para>Binutils &binutils-version;</para>
     </listitem>-->
-    <!--<listitem>
+    <listitem>
       <para>Bison &bison-version;</para>
-    </listitem>-->
+    </listitem>
     <!--<listitem>
       <para>Bzip2 &bzip2-version;</para>
     </listitem>-->
diff --git a/general.ent b/general.ent
index e90227f84..925cfbba4 100644
--- a/general.ent
+++ b/general.ent
@@ -1,5 +1,5 @@
-<!ENTITY version "SVN-20120605">
-<!ENTITY releasedate "June 5, 2012">
+<!ENTITY version "SVN-20120606">
+<!ENTITY releasedate "June 6, 2012">
 <!ENTITY copyrightdate "1999-2012"><!-- jhalfs needs a literal dash, not &ndash; -->
 <!ENTITY milestone "7.2">
 <!ENTITY generic-version "development"> <!-- Use "development", "testing", or "x.y[-pre{x}]" -->
diff --git a/packages.ent b/packages.ent
index 1d1f31da1..3e1872678 100644
--- a/packages.ent
+++ b/packages.ent
@@ -46,10 +46,10 @@
 <!ENTITY binutils-ch6-du "307 MB">
 <!ENTITY binutils-ch6-sbu "1.9 SBU">
 
-<!ENTITY bison-version "2.5">
-<!ENTITY bison-size "1,983 KB">
-<!ENTITY bison-url "&gnu;bison/bison-&bison-version;.tar.bz2">
-<!ENTITY bison-md5 "9dba20116b13fc61a0846b0058fbe004">
+<!ENTITY bison-version "2.5.1">
+<!ENTITY bison-size "1,571 KB">
+<!ENTITY bison-url "&gnu;bison/bison-&bison-version;.tar.xz">
+<!ENTITY bison-md5 "012708d801a3c986d8654aa673530b61">
 <!ENTITY bison-home "&gnu-software;bison/">
 <!--
 <!ENTITY bison-ch5-du "">