This paper describes an updated CASAL based assessment of Patagonian toothfish (D. eleginoides) in Subarea 48.4. The assessment data are updated with the observations for the 2017/18 season and the data weighting method revised to be consistent with those applied in other CCAMLR assessment model fits. Stock projections indicate that the stock was at 67% of B₀ in 2018/19 and that a yield of 27 tonnes in 2019/20 and 2020/21 is consistent with the application of the CCAMLR harvest control rule.