Amazon.com raises free shipping minimum to $35

Amazon.com customers will need to spend more money on the site in order to qualify for free shipping.

The online retailer raised the minimum order size needed for free shipping to $35 from $25. The change, made Monday, comes ahead of the busy holiday shopping season.

Amazon.com Inc. is pushing customers to sign up for its Amazon Prime service, which costs $79 a year. Members receive free two-day shipping on millions of items on the site.

In a post on its website, Amazon.com Inc. says that it's the first time it has increased its free shipping minimum in more than a decade.