CFR›Title 48›Chapter 15›Part 1539 ContainsSubparts 1539.1–1539.2CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 PART 1539—ACQUISITION OF INFORMATION TECHNOLOGY Subparts 1539.1 Subpart 1539.1—Commercial Supplier Agreements 1539.2 Subpart 1539.2—Open Source Software Section 1539.2071 Authority5 U.S.C. 301 and 41 U.S.C. 418b.Source85 FR 46558, Aug. 3, 2020, unless otherwise noted. Previous 1537 Part 1537—Service Contracting Next 1542 Part 1542—Contract Administration