Google Maps Plugin Not Updating Properly

Having an issue with the Google map plugin in that it is showing an update, but when we try to update via the standard update function it doesn't work. It pops right back up saying there is still an update for it. When I looked more closely, the plugin version is currently showing as 2.8-RC-1 and is trying to update to 2.8. Any suggestions on how to get the update nag to go away or get it to update properly?