How to escape semicolon in ruby rxml

I'm using Ruby On Rails' RXML to create a sitemap feed for Google.

Google requires that images are marked up with the image name space, requiring an element that has a semicolon in it like this:

<image:image>
  <image:loc>http://ift.tt/Sqn21r; 
</image:image>

If I use

xml.image:loc => "something"

I get

<image:image>
  <image loc="something"/>
</image:image>

If I use xml.image:loc("something")

I get

    compile error
/home/vagrant/website/app/views/feeds/sitemap.rxml:36: syntax error, unexpected '(', expecting kEND
                                            xml.image:loc("something")

If I try this

xml.image:loc do
  puts  "something"
end

I get this

<image:image>
  <image:loc>
  </image:loc>
</image:image>