How to ensure the browser is picking up the latest version of a Polymer app?

[razack...@gmail.com]

I've got a Polymer 1.0 app that's working well, but whenever I make an update the users are not seeing the latest version. They only do so when they force-refresh the browser, or after some time.

Is there a way to force the browser to always get the latest version?

(things like <META HTTP-EQUIV="Pragma" CONTENT="no-cache"> don't seem to do much...)