diff --git a/help/C/index.docbook b/help/C/index.docbook
index 94d34080..a0c4ada1 100644
--- a/help/C/index.docbook
+++ b/help/C/index.docbook
@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
 "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" [
-  <!ENTITY appversion "0.31.0">
-  <!ENTITY manrevision "1.12">
-  <!ENTITY date "May 2018">
+  <!ENTITY appversion "1.6.0">
+  <!ENTITY manrevision "1.13">
+  <!ENTITY date "September 2023">
   <!ENTITY app "gparted">
   <!ENTITY appname "GParted">
   <!-- Information about the entities:
@@ -50,7 +50,7 @@
       <holder>Curtis Gedak</holder>
     </copyright>
     <copyright>
-      <year>2014, 2015, 2017, 2018</year>
+      <year>2014, 2015, 2017, 2018, 2023</year>
       <holder>Mike Fleetwood</holder>
     </copyright>
 
@@ -113,6 +113,15 @@
 <!-- According to GNU FDL, revision history is mandatory if you are -->
 <!-- modifying/reusing someone else's document.  If not, you can omit it. -->
     <revhistory>
+      <revision>
+        <revnumber>&appname; Manual V1.13</revnumber>
+        <date>September 2023</date>
+        <revdescription>
+          <para role="author">Mike Fleetwood</para>
+          <para role="publisher">&appname; Project</para>
+          <para role="annotations">Describes version 1.6.0 of &appname;</para>
+        </revdescription>
+      </revision>
       <revision>
         <revnumber>&appname; Manual V1.12</revnumber>
         <date>May 2018</date>