i have the joints on my brood box separating; just the one lower joint on one side so far. this time of year I don't usually want to disturb the bees much. any advice?

i was just thinking of filling it in with sealer, and hoping for the best until spring swarm management time. I had a couple boxes with the same effect and I just hammerd them back in with some glue; but there were no bees in them.