Help please, monkey baby!

Haley

My Feb 2018 baby is climbing out of his bed (pack n play) of a night. Any ideas or suggestions to stop this? I have always just laid him in it and shit the door and he will go to sleep on his own. Now that he is discovered this trick that’s not working. Last night he was laying in the floor asleep when I went to check on him after I got out of the shower.