(2:05 p.m. EST) -- Weak demand for early spring river cruises in Europe have pushed U River Cruises to cancel its planned April 2020 voyages. Instead, cruises will resume in May.

"With strong demand skewing towards the summer and fall seasons, we've decided to update U's 2020 inaugural departure date to early May, which will feature the brand's previously announced new itineraries and programming," a U River Cruises spokesperson told Cruise Critic.

U River Cruises' two-ship fleet, comprising The A and The B, will start sailing in May, with The A returning May 15, 2020. The B, which is being reintroduced to the U River Cruises fleet this year after being absent last season, begins operations on May 1.

U River Cruises will offer five itineraries for the 2020 season: "Rolling on the Rhine" from Amsterdam to Frankfurt; "Amsterdam and Brussels Bound" from Amsterdam to Brussels; "Eastern Europe Escape" from Vienna to Belgrade; "Vienna Vibe" from Vienna to Nuremberg; and the Christmas Markets-themed "Dashing through the Danube" from Budapest to Regensburg.