Turning 4 and still having nightly accidents...?

I know this is normal and I'm not really concerned but I was just curious what other's experience have been with this? My son turns 4 this month and he's been potty trained during the day for quite some time now. Nightime is a whole other ball game though. We tried taking him out of his pull ups but then he started having accidents during the day. Rebellion for the change, I guess. Anyway, I'm not looking for tips necessarily because I know in time this will resolve itself on his schedule but just interested to know your dealings with this matter.