How to manually add expire header for google fonts css files?


i am trying to boost my website shoeamaze but when i look it on gtmetrix it says following statement

There are 6 static components without a far-future expiration date.

https://fonts.googleapis.com/css?family=Raleway%3A100%2C200%2C300%2C400%2C500%2C600%2C700%2C800%2C900&ver=5.4.1 https://fonts.googleapis.com/css?family=Droid+Serif%3A400%2C700&ver=5.4.1 https://fonts.googleapis.com/css?family=Muli%3A400%2C500%2C600%2C900%7CRubik%3A500%2C700&subset=latin%2Clatin-ext