After marriage, a premarital agreement may be amended or revoked only by a written agreement signed by the parties. The amended agreement or the revocation is enforceable without consideration. Source: SL 1989, ch 216 , § 5.
SDCL § 25-2-20 — under RIGHTS AND OBLIGATIONS OF MARRIAGE.
SDCL § 25-2-20
After marriage, a premarital agreement may be amended or revoked only by a written agreement signed by the parties. The amended agreement or the revocation is enforceable without consideration. Source: SL 1989, ch 216 , § 5.