Shiny: there is no package called ‘plotly’

Hey,
I have an issue, when I upload my Shiny app with Plotly functions to shinyapps.io. Namely, I’ve got an error:

Error in value[3L] : there is no package called ‘plotly’
Calls: local … tryCatch → tryCatchList → tryCatchOne →
Execution halted

while app works localy with no issues!

Thx in advance!