Rstudio IDE 1.4.1717 package updating issue

Hi everyone,

I have updated recently my Rstudio to the version from 1.4.1106 to 1.4.1717 on one of my Mac.

But, I have found that the "update" function for the packages doesn't find any new version of my packages although the Rstudio of another of my Mac running the 1.4.1106 version finds some update.

Thank you and sorry if it has already been underlined, but I haven't found any topic about that problem yet.