Posterior distributions for the masses and eccentricities of LP 791-18 d and c from a fit to the updated set of TTV observations in the case of a tidally damped free eccentricity prior (red), and a uniform eccentricity prior (blue). If we assume that the eccentricities are damped, then the observations are consistent with e = 0 and the planetary masses are slightly lower. If the eccentricities are not damped, the planetary masses are slightly higher.