Contact pictures not updating from Google+

I am running a Nexus S with a stock Android 4.1.1. On stock Android in general, the phone will pull pictures for contacts from the Google profile, if a Google profile is associated with a contact (email address + public profile available).

However, some of my contacts have updated their Google profile pictures, but on the Android phone the contacts all still have their old contact pictures. It seems as if Android is not ever updating these (by itself).

Is there any way to keep the contact pictures up to date with their associated Google profile pictures?