Nigeria are now 70th in the FIFA Rankings, nine places down from last month, according to the latest ratings released by FIFA on Thursday.
They are now 17th in Africa with 514 points.
The likes of Cape Verde, Uganda and Benin are now above Nigeria in the ratings.
The Super Eagles were not involved in any international matches last month.
Nigeria’s World Cup qualifying rivals Algeria remain the top team in Africa and 32nd in the world, while Cameroon are seventh in Africa and 53rd in the world.
However, the Super Eagles are above World Cup foes Zambia, who are 23rd in Africa and 88th in the world.