Shockwave has the newest version up now (and have had for quite some time.) Go to shockwave and download the game again. While that is going, backup your saved game files. See this post for instructions on how to do that.

Then, just install the game from Shockwave and it should be upgraded. When you launch the game, if you don't see your player names (and families) just close the game and use your backup copy of your save game files to restore them. (Reverse the process in that link above.) Launch the game again and you should be good to go.