diff --git a/doc/da/index.docbook b/doc/da/index.docbook
index 9afc41c..6b54998 100644
--- a/doc/da/index.docbook
+++ b/doc/da/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 kplayer "<application
 >KPlayer</application
 >">
diff --git a/doc/en/index.docbook b/doc/en/index.docbook
index f0e9658..e261490 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 kplayer "<application>KPlayer</application>">
   <!ENTITY mplayer "<application>MPlayer</application>">
   <!ENTITY mldonkey "<application>MLDonkey</application>">
diff --git a/doc/es/index.docbook b/doc/es/index.docbook
index 52cf542..e1bb2f2 100644
--- a/doc/es/index.docbook
+++ b/doc/es/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 kplayer "<application
 >KPlayer</application
 >">
diff --git a/doc/it/index.docbook b/doc/it/index.docbook
index a012db5..218f13a 100644
--- a/doc/it/index.docbook
+++ b/doc/it/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 kplayer "<application
 >KPlayer</application
 >">
diff --git a/doc/pt/index.docbook b/doc/pt/index.docbook
index d7bc554..d883491 100644
--- a/doc/pt/index.docbook
+++ b/doc/pt/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 kplayer "<application
 >KPlayer</application
 >">
diff --git a/doc/sv/index.docbook b/doc/sv/index.docbook
index 0052dda..8e7ab87 100644
--- a/doc/sv/index.docbook
+++ b/doc/sv/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 kplayer "<application
 >KPlayer</application
 >">