The new contract will keep the Dutch keeper at Old Trafford until 2010.
“We have agreed a new one-year contract with Edwin,” said Ferguson.
“His experience, temperament, professionalism and performance level have not changed one bit since he has been with us.
“Obviously, it will be his last year. He will be almost 40 then, which is a great credit to the lad.
“He has been absolutely marvellous here.”