Observed rest-frame Lyα EW vs. the stellar metallicity inferred from the UV spectrum. For ID53 we show the light-weighted metallicity preferred by the models with a complex SFH. The metallicities inferred for the LAEs from Patrício et al. (2016) and this study show that the trend between stellar metallicity and Lyα EW identified by Cullen et al. (2020) can be extrapolated to higher EWs. The grey data points show measurements by Patrício et al. (2016) and Cullen et al. (2020) shifted by 0.1 dex to account for differences in the assumed stellar population models.