diff --git a/doc/en/index.docbook b/doc/en/index.docbook
index dd94f15..3041348 100644
--- a/doc/en/index.docbook
+++ b/doc/en/index.docbook
@@ -1,5 +1,5 @@
 <?xml version="1.0" ?>
-<!DOCTYPE book PUBLIC "-//KDE//DTD DocBook XML V4.1.2-Based Variant V1.1//EN" "dtd/kdex.dtd" [
+<!DOCTYPE book PUBLIC "-//KDE//DTD DocBook XML V4.2-Based Variant V1.1//EN" "dtd/kdex.dtd" [
     <!ENTITY app "kio-locate">
     <!ENTITY app_date "2005-09-15"> <!-- (YYYY-MM-DD) -->
     <!ENTITY app_version "0.4.3"> <!-- (V.MM.LL) -->