Payday 2 has been updated to version 216.2 today by Starbreeze. You can find out the complete patch notes for this update from here.
This patch has removed the “perk deck exploit” in Payday 2. This allowed the users to revive themselves an infinite number of times thus exploiting the gameplay and leading to a game-breaking experience. This has been patched with the update today in addition to various other fixes. You can get the details on this update below, or take a look at the Steam forums.