My camera doesn't follow my player while performing animations,my camera seperates from my character when it performs animations

I have my camera and player model in an empty game object called FPS Player and when my player model is performing an animation with a lot of movement like running, the camera dislocates form the player head. I need a way to lock my camera to the head bone of my player, when I perform a running animation with my player in unity, my camera separates from the player's head. I have both my camera and player inside an empty game object called fps player. anybody has something which will help me attach my camera to my player's head