update.xml

<updates>
    <update>
        <name>redSHOP Update Site</name>
        <description>redSHOP Update Component</description>
        <element>com_redshop</element>
        <type>component</type>
        <client>administrator</client>
        <version>2.1.5</version>
        <infourl title="Joomla!">https://redcomponent.com/extensions/redshop</infourl>
        <downloads>
            <downloadurl type="full" format="zip">
                https://redcomponent.com/downloads/download?Itemid=425&id=1
            </downloadurl>
        </downloads>
        <tags>
            <tag>stable</tag>
        </tags>
        <maintainer>redCOMPONENT.com</maintainer>
        <maintainerurl>https://redcomponent.com/extensions/redshop</maintainerurl>
        <targetplatform name="joomla" version="3.9"/>
    </update>
</updates>