The talk presents the first data analysis in the LHCb experiment performed in Julia (arXiv:2107.03419). The analysis includes data selection, building and combining complex PDFs (AlgebraPDF.jl), likelihood fitting, angular analysis (FourVectors.jl, ThreeBodyDecay.jl, PartialWaveFunctions.jl), hypotheses testing, and running pseudo experiments. New packages enrich Julia ecosystem fostering the adoption of the language in the High Energy Physics community.