diff --git a/chapter01/changelog.xml b/chapter01/changelog.xml
index 764bb64bd..53a80d51a 100644
--- a/chapter01/changelog.xml
+++ b/chapter01/changelog.xml
@@ -92,6 +92,7 @@ First a summary, then a detailed log.</para>
 <listitem><para>&gcc-specs-patch;</para></listitem>
 <listitem><para>&glibc-testfix-patch;</para></listitem>
 <listitem><para>&perl-libc-patch;</para></listitem>
+<listitem><para>&zlib-security_fix-patch;</para></listitem>
 </itemizedlist>
 </listitem>