Force last SWF downloading

Hi everyone,
i'm developing a web application with Apache Flex 4.12, so, to be clear,
when my client access into his computer browser and write the application
URL, he can login into the application.

I need, obviously, to be sure my client is playing the last version i
published.

So, without creating complex version algorithms or so on, is there a way to
force the swf download even if the browser has all the usual cache setting?

Thanks
Angelo