Tesla finally updated its full self-driving software – but warned the tech might ‘do the wrong thing at at the worst time.’ Elon Musk told drivers to be ‘paranoid.’

The electric car maker released the long-awaited beta version 9 (v9) of its FSD software overnight on Friday for members of its early access program, according to screenshots of the release notes. Other drivers posted videos of them testing the updated system on YouTube.

“Full Self-Driving is in early limited access Beta and must be used with additional caution. It may do the wrong thing at the worst time, so you must always keep your hands on the wheel and pay extra attention to the road. Do not become complacent,” the beta v9 release notes said, according to one driver’s screenshot.