I know some one on aquabid sells adpters just for this, but Rex's method will work just fine as long as its a tight fit.
If the seal isn't tight or you have a habit of pulling the hose out (
) then the silicone or epoxy will work great. If you do use the silicone or epoxy just turn the hose/cap assembly upside down and apply a generous amount. In this case generaous would mean less than 1/2 TSP.