  We perform short-time Monte Carlo simulations to study the criticality of the
isotropic two-state majority-vote model on cubic lattices of volume $N = L^3$,
with $L$ up to $2048$. We obtain the precise location of the critical point by
examining the scaling properties of a new auxiliary function $\Psi$. We perform
finite-time scaling analysis to accurately calculate the whole set of critical
exponents, including the dynamical critical exponent $z=2.027(9)$, and the
initial slip exponent $\theta = 0.1081(1)$. Our results indicate that the
majority-vote model in three dimensions belongs to the same universality class
of the three-dimensional Ising model.
