A top government functionary said that the judiciary is opposing the move to overturn the two-decade-old system, saying there is no need to change the mechanism.
Outgoing Chief Justice of India Altamas Kabir recently defended the collegium system, saying appointments to the higher judiciary are made after "intense deliberations".
His successor Justice P Sathasivam too has asserted that there is no need to change the collegium system.
Complicating things for the government, the Opposition is also "not playing ball", he said.
Various political parties have demanded that government should bring all bills relating to judicial reforms together.
A senior Opposition leader has also suggested a ban on post-retirement government assignments for senior judges.
With next general election now months away and Parliament failing to function due to repeated disruptions, government will find it tough to get the Constitutional amendment bill passed required to scrap the collegium system.
Law Minister Kapil Sibal had recently said that the collegium system of appointing judges has not worked to the expectations and the government must have a say in such appointments.
