http_to_https_cat.xml

<?xml version="1.0" encoding="UTF-8"?>
<catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog">

    <!--This ensures that we perform any requests to oasis-open via https instead of http, which can fail-->
    <public publicId="-//OASIS//DTD DocBook XML V4.5//EN" uri="https://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd"/>

    <system systemId="http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" uri="https://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd"/>

</catalog>