Notice of Modification to Contract N00189-21-D-Z043

The Department of the Navy Naval Supply Systems Command has issued a Special Notice regarding a modification to Contract N00189-21-D-Z043. This notice announces the Government's intention to increase the ceiling value of an existing Single Award Indefinite Delivery, Indefinite Quantity Firm-Fixed-Price contract to permit additional orders before contract expiration. The underlying contract requirement and performance period remain unchanged, with the contract set to conclude on August 31, 2026. This is a sole source action and does not constitute a request for proposals or capability statements. The Special Notice was posted on January 8, 2026, and closes on January 9, 2026, at 12:00 PM EST.

The primary purpose of this modification is to increase the contract ceiling to accommodate additional task orders under the existing agreement prior to its termination date. No new submissions or capability statements are being solicited, as the competitive solicitation for the follow-on contract, Solicitation N0018925RZ115 for Engineering and Technical Support Services for the Office of Naval Intelligence, closed on August 25, 2025. Contractors cannot participate in this Special Notice as it is a unilateral government action to modify an existing contract rather than a competitive opportunity. The follow-on contract to replace N00189-21-D-Z043 will be awarded prior to August 31, 2026, ensuring continuity of engineering and technical support services for the Navy.