There is a webextension version of ublock origin. I'm not entirely sure ff 54 supports all the needed APIs. uBlock0.webext.xpi @ https://github.com/gorhill/uBl

There is a webextension version of ublock origin. I'm not entirely sure ff 54 supports all the needed APIs. uBlock0.webext.xpi @ https://github.com/gorhill/uBlock/releases/tag/1.12.4 https://github.com/gorhill/uBlock/releases/tag/1.12.4 Edit: I've disabled the addon signing requirement and all seems to be working. Hopefully it gets on the AMO soon.