Video Assistant Referees (VAR) technology will be used in the knockout stages of this season’s Champions League and Europa League competitions.
European football’s governing body confirmed the move following the meeting of its executive committee in Dublin.
VAR will also be used at next summer’s Nations League Finals – which will feature England as well as Portugal, Holland and Switzerland.
The Champions League last 16 gets under way in February next year.
UEFA president Aleksander Ceferin said: “We are ready to use VAR earlier than initially planned and we are convinced that it will be beneficial for our competitions as it will provide valuable help to match officials and will allow to reduce incorrect decisions.”