It is always best to keep R up-to-date. This is not a major release, but instead mostly a bug fix release.
If you are using R on MS-Windows then you can very painlessly upgrade R with package ‘installr’. This are the needed steps, that should be carried not in RStudio but in RGUI (i.e. double click the R icon on your desktop).
At the console enter:
install.packages("installr") # install setInternet2(TRUE) # only for R versions older than 3.3.0 installr::updateR() # updating R.
Follow the prompts. I suggest that you copy and update the packages in the library.