diff --git a/office/docbook/docbook-xml/files/xml/catalog b/office/docbook/docbook-xml/files/xml/catalog
index 5d82c642..14a5a956 100644
--- a/office/docbook/docbook-xml/files/xml/catalog
+++ b/office/docbook/docbook-xml/files/xml/catalog
@@ -25,6 +25,8 @@
   <delegateURI uriStartString="http://www.oasis-open.org/docbook/xml/4.3/" catalog="file:///etc/xml/docbook"/>
   <delegateSystem systemIdStartString="http://www.oasis-open.org/docbook/xml/4.4/" catalog="file:///etc/xml/docbook"/>
   <delegateURI uriStartString="http://www.oasis-open.org/docbook/xml/4.4/" catalog="file:///etc/xml/docbook"/>
+  <delegateSystem systemIdStartString="http://www.oasis-open.org/docbook/xml/4.5/" catalog="file:///etc/xml/docbook"/>
+  <delegateURI uriStartString="http://www.oasis-open.org/docbook/xml/4.5/" catalog="file:///etc/xml/docbook"/>
   <delegatePublic publicIdStartString="-//OASIS//ENTITIES DocBook XML" catalog="file:///etc/xml/docbook"/>
   <delegatePublic publicIdStartString="-//OASIS//DTD DocBook XML" catalog="file:///etc/xml/docbook"/>
   <delegateSystem systemIdStartString="http://www.oasis-open.org/docbook/" catalog="file:///etc/xml/docbook"/>