The History of Joseph the Carpenter (BHO 532–533; CANT 60; clavis coptica 0037) is readily accessible in many collections of New Testament Apocrypha. The text is fully preserved in Arabic and Bohairic, which was the regional dialect of Lower Egypt, and fragmentarily in Sahidic (i.e., the dialect of Upper Egypt). The present paper introduces P. Duk. inv. 239, a previously unidentified Sahidic fragment of this writing, which surfaced recently among the manuscripts in the Special Collections Library of Duke University. The new textual witness supplies us with a portion of the History of Joseph the Carpenter previously unattested in Sahidic. Moreover, the Duke fragment displays at least one interesting variant reading, unrecorded in the Bohairic and Arabic versions of the text.