  WASP-128 is a relatively bright (V= 12.37) G0-dwarf, known to host a
transiting brown dwarf in a short-period orbit (Hod\v{z}i\'c et al. 2018
arXiv:1807.07557 (H18)). Very few such objects are known, which makes WASP-128
a prime target for further observations to better understand giant planet /
brown dwarf properties,including formation and migration histories. To
facilitate the planning of future observations of WASP-128b, we improve the
orbital ephemeris of the system, by using the seven transits of WASP-128
observed by TESS. We note that our orbital period differs significantly from
that of H18: it is more than $14\,\sigma$ (using their uncertainty) larger.
This results in our ephemeris predicting a mid-2020 transit to occur almost
eight hours later than the H18 ephemeris. We find, however, no evidence for any
period variation.
