Borussia Dortmund has announced that goalkeeper Roman Burki has signed a new four-year contract.

The Switzerland international, who joined the club from Freiburg in 2015, has agreed to a new deal that will run until the end of the 2020-2021 season.

"I'm very pleased with the trust Borussia Dortmund have placed in me, especially during such a tough time," the 26-year-old told Dortmund's official website.

"I'm thrilled and proud to be the goalkeeper of such a great team, to which I give my all."

Sporting director Michael Zorc added: "Roman is the perfect fit for Borussia Dortmund on both a sporting and personal level. We like his style of play, see great potential for development in him and assume he will soon show that on a regular basis." 

The news comes despite criticism of Burki's displays in recent weeks, particularly in the UEFA Champions League.

The former Grasshoppers man conceded twice at the near post in the 3-1 loss to Tottenham Hotspur at Wembley and gifted APOEL its goal in this week's surprise 1-1 draw, conceding possession from a kick before spilling Lorenzo Ebecilio's shot to allow Mickael Pote to score.