  We study renormalization of Coulomb-gauge QCD within the Lagrangian
second-order formalism. We derive a Ward identity and the Zinn-Justin equation,
and, with the help of the latter, we give a proof of algebraic
renormalizability of the theory. Through diagrammatic analyses, we show that,
in the strict Coulomb gauge, g^2D^{00} is invariant under renormalization.
(D^{00} is the time-time component of the gluon propagator.)
