<PAGE>
Prudential Government Securities Trust
(U.S. Treasury Money Market Series)
Supplement dated May 12, 1995 to
Prospectus dated April 3, 1995
HOW THE TRUST INVESTS
INVESTMENT OBJECTIVE AND POLICIES
The Trustees of the Trust have approved a modification to the investment
policies and restrictions of the Trust's U.S. Treasury Money Market Series (the
Series). This change, along with the modifications proposed to the Series'
Distribution and Service Plan described below under ``How the Trust is
Managed--Distributor'', will be submitted to shareholders for their approval at
a special meeting scheduled to be held in or about July 1995. The change in the
Series' investment policies and restrictions will permit it to invest up to 10%
of its net assets in securities with legal or contractual restrictions on resale
and other illiquid securities. This change will be described in more detail in
the proxy statement which will be mailed to shareholders.
HOW THE TRUST IS MANAGED
DISTRIBUTOR
The Trustees of the Trust have also approved modifications to the Series'
Distribution and Service Plan (the Plan) to change it from a reimbursement to a
compensation plan. Under the current Plan the Distributor is reimbursed for
certain ongoing costs actually incurred by it in connection with the services
and activities undertaken to distribute shares of the Series and service
shareholder accounts (Distribution Activities). As proposed to be amended, the
Plan would authorize the Series to pay the Distributor the same maximum annual
fee as under the current Plan as compensation for its Distribution Activities.
MF145C-1
<PAGE>
