That means those models will no longer be eligible to be serviced by Apple.

Apple will mark four iMac desktop models as obsolete later this month, MacRumors reported Tuesday. These include the 21.5-inch and 27-inch ‌iMac‌ from late 2013, the 21.5-inch ‌iMac‌ from mid-2014 and the Retina 5K 27-inch ‌iMac‌ from late 2014.

The move will be official Nov. 30, according to the report. That means those models will no longer be eligible to be serviced by Apple.

According to Apple's website, the last iMac desktop models to become obsolete were the 27-inch iMac from mid-2011, the 27-inch iMac from 2012 and the 20-inch iMac G5 (iSight).

These four models would join over 45 other obsolete iMac models. The entire list of vintage and obsolete Apple models can be found here.

Apple didn't immediately respond to a request for comment.