Mac OS X won't update flash?

[hun7]

My 2008 black mac OS X won't update flash on google chrome. For about 3 weeks now, everytime I want to watch a video or go to a page with a lot of graphics, a yellowish notification pops up at the top of the page that says, "adobe flash player was blocked because it is out of date. learn more" I always have to click "run this time" because I cannot figure out what is wrong. I clicked on "update plug in" and did exactly what it told me to do. I installed it and it still doesn't fix the problem. I have done a few other things but it doesn't seem to fix it and it's driving me insane! I even restart the computer after. Has anyone else experienced this and had it fixed? I appreciate your help!