Update: This offer has ended.

If for some crazy reason you aren't already a member of Amazon's Prime service and you have an Alexa-enabled device in your home, today's the day to become a member. Right now, you can save $20 on your first year of Prime, dropping it down to $79. Normally the service runs $99 for the year, which is actually a pretty great price considering all the benefits, and it isn't very often that you see the price drop below that.

This offer, which is only good for July 5, is part of Amazon's lead-up to Prime Day. We've already seen the retailer drop the price of a refurbished Echo Dot (which allows you to take advantage of the voice-only offerings), as well as the offer for a free $10 promo code with your first voice order.

Just in time for Prime Day, Alexa device owners who are not yet Prime members can now use their voice to sign up for their first year of Prime membership for just $79, a $20 savings, for a limited time. Customers simply say, "Alexa, sign me up for Prime" using their Amazon Echo, Echo Dot, Echo Show or Amazon Tap. Once the order is confirmed, customers immediately have access to all Prime benefits as well as the ability to participate in Prime Day and the two-hour Alexa exclusive shopping window.

Not ready to commit to a full year of Amazon Prime? You can sign up for a free 30-day free trial to test the waters, but odds are you are going to want to be a member, so be sure to pick it up at the discount if you can!