When we release bug fix or an improvement, in some cases you will need the latest version of the extension. The good news is that your browser will most likely automatically updates all your extensions every 24 to 72 hours.
However, if you need to accelerate the update process, try to manually force the update like this:
Go to Chrome > Window > Extensions > Enable Developer mode > Update
Go to Firefox > Tools > Add-ons > Enable Check for Updates > Install updates