Engineer – Adam Comstock, Danny Parra , Steve HammonsEngineer [Mix] – Steve HammonsKeyboards – Jamie MuhoberacMixed By, Producer – Rock MafiaProducer – Hit Boy*, Rock MafiaProducer [Additional] – DubkillerProgrammed By – Dubkiller, Hit Boy*, HazeBanGa*, Nigel LundemoWritten-By – Adam Schmalholz, Antonina Armato, Chauncey Hollis, Julia Michaels, Justin Tranter, Selena Gomez, Tim James

Coordinator [Production] – Andrew Luftman, Astrid Taylor, Seif Hussain, Zvi EdelmanEngineer [Mix, Assistant] – Phil SeafordEngineer [Mix] – John HanesInstrumentation By, Producer, Programmed By – Benny Blanco , Rock MafiaMixed By – Serban GheneaProducer [Additional] – R3drumRecorded By – Adam Comstock, Steve HammonsWritten-By – Antonina Armato, Benjamin Levin, Dave Aude*, Selena Gomez, Tim James

Backing Vocals – Julia MichaelsBass, Drums, Guitar, Piano, Producer, Recorded By – Mattman & RobinEngineer [Mix] – John HanesMixed By – Serban GheneaPercussion, Producer [Vocals], Programmed By, Synth – Mattman & Robin, Max MartinRecorded By [Assistant] – Juan Carlos TorradoWritten-By – Julia Michaels, Justin Tranter, Mattias Larsson , Max Martin, Robin Fredriksson

Coordinator [Production] – Andrew Luftman, Astrid Taylor, Seif Hussain, Zvi EdelmanEngineer [Vocals, Assistant], Recorded By [Vocals, Assistant] – Blake Mares, Simon French Engineer [Vocals], Recorded By [Vocals] – Chris Sclafani, Rob EllmoreExecutive-Producer – Danny D*, Tim Blacksmith Instrumentation By, Producer, Programmed By – Benny Blanco , StarGate Mixed By – Mark "Spike" Stent*Mixed By [Assistant] – Geoff Swan, Matty Green Written-By – Benjamin Levin, Charlotte Aitchison, Mikkel Eriksen*, Ross Golan, Tor Hermansen*

Backing Vocals – Leah HaywoodEngineer [Mix, Additional & Assistant] – Daniela RiveraEngineer [Vocals] – Rob EllmoreExecutive-Producer – Danny D*, Tim Blacksmith Instruments [All] – Mikkel Eriksen*, Tor Hermansen*Mixed By – Phil TanProducer – StarGate Producer [Vocals] – DreamlabRecorded By – Mike Anderson , Mikkel Eriksen*, Miles WalkerWritten-By – Chloe Angelides, Jacob Kasher, Julia Michaels, Mikkel Eriksen*, Tor Hermansen*

Backing Vocals – Leah HaywoodCo-producer – A$AP Rocky*, Hector Delgado Engineer [Selena Vocals, Assistant], Recorded By [Selena Vocals, Assistant] – Juan Carlos TorradoEngineer [Selena Vocals], Recorded By [Selena Vocals] – Rob EllmoreFeaturing – A$AP Rocky*Mixed By – Tony MaseratiMixed By [A$AP Rocky Vocals, Assistant], Recorded By [A$AP Rocky Vocals, Assistant] – J.B. SaboiaMixed By [A$AP Rocky Vocals], Producer [A$AP Rocky Vocals], Recorded By [A$AP Rocky Vocals] – Hector Delgado Mixed By [Assistant] – Tyler ScottProducer – Nick Monson, Nolan LambrozaProducer [Selena Vocals] – DreamlabWritten-By – Hector Delgado , Julia Michaels, Justin Tranter, Nick Monson, Nolan Lambroza, Rakim A. Mayers*, Selena Gomez

Backing Vocals – Leah HaywoodEngineer [Piano] – Will SandallsEngineer [Vocals] – Rob EllmoreInstrumentation By, Grand Piano, Producer, Programmed By – Christopher Braide*Mixed By – Tony MaseratiMixed By [Assistant] – Tyler ScottProducer [Vocals] – DreamlabWritten-By – Badrilla Bourelly*, Christopher Braide*

Backing Vocals – Julia MichaelsBass, Drums, Percussion, Producer, Producer [Vocals], Programmed By, Recorded By, Synth, Tracking By – Mattman & RobinEngineer [Mix] – John HanesMixed By – Serban GheneaRecorded By [Assistant], Tracking By [Assistant] – Juan Carlos TorradoWritten-By – Julia Michaels, Justin Tranter, Mattias Larsson , Robin Fredriksson, Selena Gomez

Backing Vocals – Leah Haywood, Ross GolanDrums, Engineer – Chris LawsEngineer [Assistant] – Dan Pursey*Engineer [Vocals] – Rob EllmoreKeyboards, Producer – Steve Mac Mixed By – Tony MaseratiMixed By [Assistant] – Tyler ScottProducer [Vocals] – DreamlabWritten-By – Ross Golan, Steve Mac

Backing Vocals, Mixed By – Rock MafiaEngineer – Adam Comstock, Danny Parra , Steve HammonsEngineer [Mix] – Steve HammonsGuitar – Brandon "Casanova" Hodge*, Joao Pedro Mourao*, Rock Mafia, Steve HammonsPercussion – Danny Parra , Hit Boy*, Rock Mafia, Steve HammonsProducer – Hit Boy*, Rock MafiaProgrammed By – Hit Boy*, HazeBanGa*Written-By – Antonina Armato, Chauncey Hollis, Julia Michaels, Justin Tranter, Selena Gomez, Tim James

Backing Vocals, Keyboards, Mixed By – Rock MafiaEngineer – Adam Comstock, Nigel Lundemo, Steve HammonsEngineer [Mix] – Steve HammonsPercussion – Nigel LundemoProducer – Hit Boy*, Rock MafiaProgrammed By – Hit Boy*, Nigel LundemoWritten-By – Adam Schmalholz, Antonina Armato, Chauncey Hollis, Selena Gomez, Tim James

Backing Vocals, Mixed By, Producer – Rock MafiaEngineer – Adam Comstock, Steve HammonsEngineer [Mix] – Steve HammonsGuitar – Jimmy Messer, Rock Mafia, Tim PierceGuitar [Intro] – Jimmy MesserKeyboards – Rami JaffeePercussion – Rock Mafia, Steve HammonsSaxophone – David UrquidiTrumpet – Serafin AguilarWritten-By – Antonina Armato, Matt Morris , Selena Gomez, Tim James

Backing Vocals, Producer [Vocals] – Julia Michaels, Shane StevensEngineer [Vocals, Assistant], Recorded By [Vocals, Assistant] – Juan Carlos TorradoEngineer [Vocals], Producer [Vocals, Additional], Recorded By [Vocals] – Benjamin Rice*Instrumentation By, Producer, Programmed By – Nick MonsonMixed By – Tony MaseratiMixed By [Assistant] – Tyler ScottWritten-By – Julia Michaels, Nick Monson, Selena Gomez, Shane Stevens

Engineer [Vocals] – Rob EllmoreInstrumentation By, Producer, Programmed By – Felix SnowMixed By – Tony MaseratiMixed By [Assistant] – Tyler ScottProducer [Vocals] – DreamlabWritten-By – Felix Snow, Julia Michaels, Justin Tranter, Selena Gomez

Backing Vocals – Estefania Freire, Rock MafiaBass – Sean HurleyEngineer – Adam Comstock, Nigel Lundemo, Steve HammonsEngineer [Mix] – Steve HammonsGuitar – Adam Comstock, Rock MafiaKeyboards – Nigel Lundemo, Rock MafiaPercussion – Rock Mafia, Steve HammonsProducer – Rock MafiaProducer [Additional] – Frank DukesProgrammed By – Dubkiller, Nigel Lundemo, Rock Mafia, Steve HammonsWritten-By – Antonina Armato, Selena Gomez, Tim James

Backing Vocals – Leah HaywoodEngineer [Mix, Additional & Assistant] – Daniela RiveraEngineer [Vocals], Recorded By [Vocals], Tracking By [Vocals] – Miles Walker, Rob EllmoreInstrumentation By, Programmed By – Cato Sundberg, Kent SundbergMixed By – Phil TanProducer – Donkey Boy*, Stargate Producer [Vocals] – Dreamlab, Miles Walker, Stargate Written-By – Cato Sundberg, Chloe Angelides, Kent Sundberg, Mikkel Eriksen*, Ross Golan, Selena Gomez