Η google just released a new stable version of it Chrome (47.0.2526.73), trying to fix enough issues security.
The new update available from the fixed channel in Chrome The programmers of Google managed to repair multiple problems of the previous fixed edition (41 repairs security).
For more details, you can see it release note of the fixed version 47.
So if you use the program browsing, you should automatically receive the update.
Alternatively, visit the address chrome: // chrome in the older version of Chrome you use and update from there.
You can download Google Chrome for the Windows (and not only) from here.