Activist groups are turning up the heat on HarperCollins—but the publisher isn’t bowing to pressure to sever ties with the anti-gay fast food chain Chick-fil-A.

Representatives from CREDO Action, SumofUs.org, and Faithful America on Tuesday delivered petitions signed by more than 80,000 people urging HarperCollins to pull several Berenstain Bears titles being distributed through a kids’ meal promotion that started this month.