Python 3.5 Tkinter "unstable" warning in IDLE

Question

I just installed Python 3.5 from the python website. After seeing this error message on IDLE :

  WARNING: The version of Tcl/Tk (8.5.9) in use may be unstable.
 Visit http://www.python.org/download/mac/tcltk/ for current information.

I installed Active tcl. Yet I still get the same error when I open IDLE. How do I go about correcting this ?