Example implementations relate to upgrading access points (APs). In some examples, a primary AP may comprise a processing resource and a memory resource storing machine readable instructions to determine, in response to receiving a data transmission from a secondary AP, whether an image version of the secondary AP and a class of the secondary AP are a same image version and class as the primary AP, determine whether the class of the secondary AP is a same class as a seed AP, and instruct the secondary AP, in response to the seed AP being the same class as the secondary AP, to upgrade the image version of the secondary AP from the seed AP.