Action Bar not updated when updating language

Question

I am currently building an app where I allow people updating the language within the application. But when changing the locale, all strings get updated but not the one in the action bar (corresponding to the activity name in the manifest). The language change is only taken into consideration when the app is restarted from scratch. What would be the best way to get all action bars updated without forcing an app reboot ?

Thanks in advance for your time and help on this one. Cheers,

Benjamin