German sides Hertha Berlin and Borussia Dortmund will take part in the Premier competition of the Milk Cup in July.
The clubs will follow in the footsteps of Bayern Munich, Werder Bremen and Bayer Leverkusen who have all competed in the tournament in the past.
"We are excited about welcoming the two German sides as we have built up a good rapport with Bundesliga clubs in recent years," said chairman Victor Leonard.
Central United from Auckland will also newcomers to this year's tournament.
The tournament runs from 28 July to 1 August, with BBC NI again offering extensive coverage of the event.
The draw will take place in Belfast on Tuesday May 13.
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