The federal Bureau of Prisons said it’s ending a collective bargaining agreement for unionized employees because “it’s time for change,” marking the Trump administration‘s latest anti-union move.

BOP Director William Marshall III announced the news Thursday night, calling the Council of Prison Locals 33 labor union “an obstacle to progress instead of a partner in it.” He thanked President Donald Trump and Attorney General Pam Bondi for providing a path to implement change across the federal prison system.