Senate Democrats must meet Sunday to vote on legislation funding the government, Speaker John Boehner (R-Ohio) said, calling their failure to do so “an act of breathtaking arrogance.”

House Republicans voted early Sunday on a spending bill that delays ObamaCare by a year. Senate Democrats say they’ll vote in down when they convene Monday, all but ensuring a government shutdown come Tuesday.

“The House worked late into the night Saturday to prevent a government shutdown, and the Senate now must move quickly, today, to do the same,” Boehner said in a statement.

“If the Senate stalls until Monday afternoon instead of working today, it would be an act of breathtaking arrogance by the Senate Democratic leadership.”