April 15, 2016

DREYFUS GOVERNMENT CASH MANAGEMENT FUNDS - Dreyfus Government Prime Cash Management

DREYFUS TREASURY PRIME CASH MANAGEMENT

Supplement to Prospectus dated June 1, 2015 and Current Statement of Additional Information

Dreyfus Government Prime Cash Management has changed its name to "Dreyfus Government Securities Cash Management."

Dreyfus Treasury Prime Cash Management has changed its name to "Dreyfus Treasury Securities Cash Management."