McDonald's global chief diversity officer, Wendy Lewis, told the news site that the upside-down arches are 'in celebration of women everywhere'
"For the first time in our brand history, we flipped our iconic arches for International Women's Day in honor of the extraordinary accomplishments of women everywhere and especially in our restaurants," Lewis said in a statement.
Lewis said that "women play invaluable roles at all levels" within the company.
"And together with our independent franchise owners, we're committed to their success," she concluded.
Some Twitter users thought the gesture was "cool". But several others mocked the company for flipping the signs.
"In a historic move, #McDonalds is leading a movement of employer actions to further women's equality in the workforce. #EqualPay, m/p/aternity leave, childcare opportunities....#JK they flipped a sign and want applause. #feminism #InternationalWomensDay," one user tweeted.