Normally, to update Chrome, you go to the Settings menu (either 3 verticle dots in Material Design or hamburger icon), click on Help and About Google Chrome.

Or just simply go to Chrome://help from the address bar.

Then, when you are at the Help page, the update will start automatically if it detects any updates available.

But if this process didn’t go well and Chrome browser keeps reverting to the old version after the restart, here is how you can do it manually.

First of all, go to Google Chrome’s Download Page and download the Chrome on your computer.

Then, shut down all Chrome instances on your computer and launch the Chrome setup file you just downloaded. It will download the latest Chrome package from Google first and install it on your computer.

Once installed, restart Chrome, and you will see the latest Chrome running instead of the old version.