Call option strike price hit, when do I sell?

Bought stock for $48, sold a call at $50/share and the stock is at $51 and change now with the call option having expired Friday 3-20. When will my broker make me sell so I have the cash freed up to reinvest?

Cheers,
Okami

Where is your broker based?

US, it’s all been taken care of now. I had a very good March and hope not to lose anything in April. :pray: