Ariya Hidayat archived phantomjs on March 3rd, 2018. (See this tweet for more info). phantomjs served us all as great headless browser for years, but now with Electron and headless modes for both Chrome and Firefox, we have much better options. mocha-chrome is a project inspired by mocha-phantomjs, so migration should be easy, and you will be running your tests on the same browser that 50% of your users actually use! I highly recommend it. I will accept pull requests still, but I won't be answering issues or doing feature work myself.