Lock Me Up is the fourth EP by American rock band The Cab, released April 29, 2014 through Republic Records in the United States. The EP marks the band's first release since their second full-length studio album Symphony Soldier, released on August 23, 2011. In 2012, the band announced that they were in the studio writing and recording a new album and signed to Republic Records. The week prior to the EP's release, on April 24, Alex Marshall announced his departure from the band. In early April, the band teased a new single titled "Lock Me Up" on their official Instagram account, which was released on April 28, 2014. It debuted on the Billboard 200 at number 44, and on Digital Albums at number 11.