<target name="prepare-html">
<mkdir dir="${build}/xslt"/>
- <unzip dest="${build}/xslt" src="doc/lib/docbook-xsl-1.66.1.zip"/>
+ <unzip dest="${build}/xslt" src="doc/lib/docbook-xsl-1.70.1.zip"/>
<copy todir="${build}/xslt">
<fileset dir="doc/style">