Leverage Browser Caching: Specify a longer expiration for Google

Hi, great plugin… fastest results I’ve been able to get.
I do have the following issues from pingdom:

The following cacheable resources have a short freshness lifetime. Specify an expiration at least one week in the future for the following resources:
https://www.google-analytics.com/analytics.js
https://fonts.googleapis.com/css?family=Playfair+Display|Roboto:300,500,700

How can I set a longer expiration for the above?
Many thanks,
Kel