Complete Collapse is the seventh studio album by American rock band Sleeping with Sirens. It was released on October 14, 2022, by Sumerian Records. It serves as a follow-up to their sixth studio album, How It Feels to Be Lost (2019). It is their first album to feature drummer Matty Best of Tonight Alive who replaced longtime drummer Gabe Barham. It is also their final album to feature longtime guitarist Jack Fowler, who departed the band early before the album's release.[4] The album also features guest appearances from Spencer Chamberlain of Underoath, Charlotte Sands, Royal & the Serpent, and Dorothy.[5]