Zandvoort has been dropped from the DTM calendar with Assen expected to replace it in 2019, Autosport has learned.
Sources have confirmed to Autosport that Zandvoort's contract extension has been waived to make room for Assen.
Zandvoort had been on the DTM calendar since 2001, with local driver Christijan Albers notably winning his home race two years later.
Assen's contract is reportedly for a duration of three years and its 2019 date is set for July.
The full 2019 DTM calendar is not expected to be a radical departure from this year's iteration, with series boss Gerhard Berger recently telling Autosport that it would have a "couple of changes, but not dramatic".
The DTM's international ambitions led to two new races in 2018, with Brands Hatch and Misano ensuring a split of five races in Germany and five outside the country.
The series is currently evaluating the success of both races - with some in the paddock expressing their wish for the British race to take place at Donington Park in the future - but the DTM has stressed an event cannot be judged in its first year of existence.
Audi and BMW are both keen for the calendar to remain a similar split between German and international races in future seasons.