A retaining ring assembly for a gas turbine engine may include a first engine component and a second engine component. A retaining ring may be disposed between the first engine component and the second engine component. The retaining ring may be circumferentially discontinuous and may include a first terminal portion having at least one of a tapered or a contoured geometry. A thickness of the retaining ring at the first terminal portion may be less than a thickness of the retaining ring away from the first terminal portion.