Rule 26.05 - Supplementation of Disclosures and Responses(a)In General A party who has made a disclosure under Rule 26.01 -or who has responded to an interrogatory, request for production, or request for admission-must supplement or correct its disclosure or response: (1) in a timely manner if the party learns that in some material respect the disclosure or response is incomplete or incorrect, and if the additional or corrective information has not otherwise been made known to the other parties during the discovery process or in writing; or(2) as ordered by the court.(b)Expert Witness . For an expert whose report must be disclosed under Rule 26.01(b)(2), the party's duty to supplement extends both to information included in the report and to information given during the expert's deposition. Any additions or changes to this information must be disclosed by the time the party's pretrial disclosures under Rule 26.01(c) are due.Amended effective 7/1/2000; amended effective 7/1/2021.Advisory Committee Comment-2021 Amendments
Rule 26.05 is amended to apply the rule's duty to supplement to initial and expert disclosures as well as other discovery responses. The amendments are substantially modeled on Fed. R. Civ. P. 26(e).