Remark on the BRST symmetry in the Gribov-Zwanziger theory

We show that the soft breaking of the Becchi, Rouet, Stora, and Tyutin (BRST) symmetry arising in the Gribov-Zwanziger theory can be converted into a linear breaking upon introduction of a set of BRST quartets of auxiliary fields. Because of its compatibility with the quantum action principle, the linearly broken BRST symmetry can be directly converted into a suitable set of useful Slavnov-Taylor identities. As a consequence, it turns out that the renormalization aspects of the Gribov-Zwanziger theory can be addressed by means of the cohomology of a nilpotent local operator.