Facing mounting criticism and a planned boycott for its sponsorship of New York City's St. Patrick's Day parade, Guinness on Sunday pulled its support.

Organizers of the nation's oldest and largest St. Patrick's Day celebration steadfastly refuse to allow gay organizations to march in Monday's parade.

On Friday, Heineken dropped its sponsorship of the parade, saying that it is “passionate about equality for all people.” Mayor Bill de Blasio earlier this month marched in a gay-inclusive parade and announced that he would not participate in the city's St. Patrick's Day parade.

(Related: NYC Mayor Bill de Blasio marches in gay inclusive St. Patrick's Day parade.)

“Guinness has a strong history of supporting diversity and being an advocate for equality for all,” the beer company said in a statement. “We were hopeful that the policy of exclusion would be reversed for this year's parade. As this has not come to pass, Guinness has withdrawn its participation. We will continue to work with community leaders to ensure that future parades have an inclusionary policy.”

Guinness' announcement came shortly after Stonewall Inn – considered the birthplace of the modern gay rights movement – said that it was removing Guinness products from its shelves.

(Related: Stonewall Inn drops Guinness over company's sponsorship of St. Pat's Day parade.)

“Today, Guinness sent a strong message to its customers and employees: discrimination should never be celebrated,” GLAAD CEO & President Sarah Kate Ellis said in a statement. “Hopefully, as parade organizers realize that anti-LGBT discrimination is not supported by sponsors, or many Irish New Yorkers, they'll see that families like mine should be part of the celebration.”