Obfuscation of serializable class.

Hello,
I’m working on multiplayer game.
I’ve already done basic part…
I have a lot of classes on both sides server and client which implements Serializable (like players etc.).
How I can obfuscate them the same way on the both sides ? (i hope there are different ways than manual work… :clue:)
In proguard I can keep names when implements Serializable but it’s not solution.
Greetings