How I Met Your Mother‘s signature quintet is swelling into a sextet.

TVLine has learned exclusively that Cristin Milioti, who was unmasked as the titular mom in this week’s season finale, will take the title of series regular during the comedy’s upcoming ninth and final season.

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This marks the first time HIMYM will have expanded its core group of regulars beyond stars Josh Radnor, Alyson Hannigan, Neil Patrick Harris, Cobie Smulders and Jason Segel.

Series cocreator Carter Bays previously revealed that as HIMYM unspools its ninth and final season, viewers will become “much better” acquainted with Milioti’s bass-playing cutie as the show tells “the epic story of the longest wedding weekend ever.”

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CBS entertainment president Nina Tassler later confirmed to TVLine that Season 9′s entire run will, in fact, span the wedding weekend and just the wedding weekend, as the comedy details “how each character, before Ted, meets the mother. So, they each meet her independently before he does.”