Copy-Beer bottles soon getting nutrition labels

(CNN) - Your favorite beer may be getting a makeover.

Nutrition labels will be added to bottles and cans. Anheuser-Busch InBev, Molson Coors, Constellation Brands and Heineken are all getting on board. Together, they produce more than 80 percent of the beers sold in the U.S.

Brewers will disclose calories, carbs, alcohol content by volume and portion size. This is a voluntary step that stemmed from criticism amongst consumer advocates.

The Center for Science and the Public Interest says that alcohol can be a major source for calories, and the absence of calorie labeling on cans and bottles has helped obscure that.

Craft brewers, however, are not planning to add the labels to their products. They say it's harder for them to do since many of them produce dozens of seasonal products each year.

Some liquor brands, like Crown Royal and Smirnoff, already added nutrition facts to bottles.

But don't expect to see changes for beer quite yet. Major U.S. brewers can't promise to have the new labels on their bottles until 2020.

Copyright 2016 WTMJ/Coors/Constellation via CNN. All rights reserved.