How to keep R and RStudio up to date?

Besides removing your current version(s) and installing from scratch a new version (including the R packages that you use), you can do the following:

• RStudio : select Check for Updates in the Help menu.
• R, but only for MS Windows users: use the following code to update R from within RStudio:

  install.packages("installr")
  library(installr)
  updateR()

  You have downloaded the latest version with this, but RStudio does not automatically use this newest version; it continues to use the old version. To make RStudio use the new version, follow the following steps:
  • Go to Tools > Global Options;
  • Click on the Change button next to R version;
  • Select the latest version;
  • Close RStudio and open it again (if RStudio doesn't do this automatically);
  • Check the startup screen to ensure you are indeed using the latest version.