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MFS(R)/SUN LIFE SERIES TRUST: BOND SERIES
Supplement to the Current Prospectus
The description of portfolio managers under the "Management of the Series"
section is hereby restated as follows:
Geoffrey L. Kurinsky, a Senior Vice President of MFS, has been employed in the
investment management area of MFS since 1987. Mr. Kurinsky has been the series'
portfolio manager since 1998. William Adams, a Vice President of MFS, has been
employed by MFS in the investment management area since 1997. Prior to joining
MFS, Mr. Adams had been an Assistant Vice President and Senior Securities
Analyst in the investment management area of Conseco Capital Management since
1994. Mr. Adams became a portfolio manager of the series effective July 1, 2000.
The date of this Supplement is July 3, 2000.
