How to fix dropping temporary files on Heroku?

Question

Heroku

I am writing for self-education of a bot in a telegram with a simple game. The bot can give the user the rating of all players.
The data is taken from a separate file with a list of participants and the number of points for each, respectively, during the game, this file is constantly updated at the time of the deployment, I had 70 points; I played and it became 80, it gives it correctly, everything is fine; but the next day I have 70 points again)
I'm not very good at Heroku yet, can I somehow fix this?
PS Deploy the bot via Heroku Git, if that's important

Answer 1

store this data somewhere else. memory in Heroku is temporary and they themselves say that if you save something there, you are guaranteed to lose it