Ind. Code § 29-1-5-8
If after making a will the testator is divorced, all provisions in the will in favor of the testator's spouse so divorced are thereby revoked. Annulment of the testator's marriage shall have the same effect as a divorce as hereinabove provided. With this exception, no written will, nor any part thereof, can be revoked by any change in the circumstances or condition of the testator.
Formerly: Acts 1953, c.112, s.508.