I can't update the client because the dependency for this mod isn't updated either. As soon as I find a way to replace the dependency, or the mod is updated - I will release an update.
UPD: Use this one instead -> SPT Discord Rich Presence <- click!!

This client listens to TechHappy's Web Minimap WS and retrieves information about the player's location, and based on that information, displays your detailed activity in SPT

Tired of how Discord just shows that you are in the game and nothing else? Now this client can fix that

Simple installation guide:

• Before downloading and installing, make sure you have TechHappy's Web Minimap installed.
• Download this application via the blue button next to the title.
• Extract the contents of SPT-RPC-win64.zip to the existing SPT-Aki folder.
• Launch SPT-RPC.exe or SPT-RPC-Launcher.bat (this file opens RPC with Aki.Launcher).
• Start the game.
• After startup go through the first setup in the application (specify language, faction, name, WS port).
• Try to check your activity (make sure you enable them in your privacy settings).

Troubleshoot:

• RPC client fails to connect
  ┕ Make sure you have the Discord client running and you are logged in.
  ┕ Try doing a clean install if the line above didn't help.
  ┕ Try to run the RPC client as administrator.
• WS fails to connect
  ┕ Make sure TechHappy's Minimap Mod is installed and working correctly.
  ┕ Make sure that the port that in the RPC client configuration (RPC/config.json) and that in the mod settings is the same.
• I can't see any activity on my profile
  ┕ In the Discord activity settings, make sure that you allow sharing detected activity with other people.

Thanks to TechHappy for using WS in minimap mod! This turned out to be the easiest way to get location data, but using dependencies
Thanks also to the community who support this client in the comments, and to the modders who use it as an addition to their launchers.

Not quite yet...