The US administration of Donald Trump is giving Chevron Corp. one month to stop producing oil in Venezuela, delivering a heavy blow to President Nicolas Maduro’s autocratic regime.

Chevron will have through April 3 to wind down exports from Venezuela, according to an update of the license, published by the U.S. Treasury Department. The Venezuelan communications ministry did not immediately respond to a request for comment on the move. The Office of Foreign Assets Control (OFAC) Department did not provide further guidance.

The Trump administration formally revoked on Tuesday the license that allows oil giant Chevron Corp. to sell Venezuelan oil in the United States, giving the U.S. company only 30 days to wind down its operations in the South American country.