To cite package ‘prophet’ in publications use:

  Duong C, Taylor S, Letham B (2026). _prophet: Automatic Forecasting
  Procedure_. R package version 1.2.2,
  <https://github.com/facebook/prophet>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {prophet: Automatic Forecasting Procedure},
    author = {Cuong Duong and Sean Taylor and Ben Letham},
    year = {2026},
    note = {R package version 1.2.2},
    url = {https://github.com/facebook/prophet},
  }