Domingue was recalled from AHL Hartford on Saturday.
Domingue played in one NHL game this season after Igor Shesterkin suffered a lower-body injury in early November. The 32-year-old Domingue stopped 25 shots in a 4-1 win over Minnesota on Nov. 9 but spent the remainder of the season in the AHL. He will be the third-string goaltender in the postseason behind Shesterkin and Jonathan Quick.