How to stop a row updating once locked

I have a sheet that i use as a list of open projects, it pulls names, dates and descriptions form other sheets, I want to be able to lock the data in the row once finished, as I don't want anything updating once the project is finished, but I want to be able to refer to the data to track project history, I tried adding a tick box and if the box is ticked it will lock the row, but the rows columns still update?