Keep App Store Software Current
Software developers regularly update their applications to improve them and to solve bugs. Apple is no different; it issues updates to its applications, but more importantly, to OS X and the other system software that makes a MacBook Pro work.
It is important that you keep your applications and system software current to ensure that your computer works as well as it can, to limit security issues, and so on. In addition to enabling you to obtain and download software, the App Store application can also help you keep your software up-to-date.
Keep App Store Software Current
Update App Store Software Manually