Oftentimes, chrome does not push out updates to extensions as quickly as we make them. This trick will help with your other extensions as well, so you don't have to uninstall and reinstall:
1. Go to "Manage Extensions" page
2. On the top right, turn on the toggle for "Developer Mode"
3. A white bar should appear underneath. Click "Update" button, and that should update all your extensions or the one you are currently displaying.
Check out this quick tutorial: