diff --git a/appendices/extensions.xml b/appendices/extensions.xml
index d29fe70d3f..e550e023ec 100644
--- a/appendices/extensions.xml
+++ b/appendices/extensions.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- $Revision: 1.42 $ -->
+<!-- $Revision: 1.43 $ -->
 <!--
   DO NOT TRANSLATE THIS FILE! All the content that is displayed
   on the extension categorization page in your translated manual
@@ -67,6 +67,7 @@
    <listitem><simpara><xref linkend="book.ibm-db2" /></simpara></listitem>
    <listitem><simpara><xref linkend="book.iconv" /></simpara></listitem>
    <listitem><simpara><xref linkend="book.id3" /></simpara></listitem>
+   <listitem><simpara><xref linkend="book.idn" /></simpara></listitem>
    <listitem><simpara><xref linkend="book.ifx" /></simpara></listitem>
    <listitem><simpara><xref linkend="book.iisfunc" /></simpara></listitem>
    <listitem><simpara><xref linkend="book.image" /></simpara></listitem>
@@ -432,6 +433,7 @@
     <listitem><para><xref linkend="book.hwapi"/></para></listitem>
     <listitem><para><xref linkend="book.ibm-db2"/></para></listitem>
     <listitem><para><xref linkend="book.id3"/></para></listitem>
+    <listitem><para><xref linkend="book.idn"/></para></listitem>
     <listitem><para><xref linkend="book.iisfunc"/></para></listitem>
     <listitem><para><xref linkend="book.imagick"/></para></listitem>
     <listitem><para><xref linkend="book.ingres"/></para></listitem>