Disney Channel will introduce its first gay characters next year during an episode of Good Luck Charlie.

According to TV Guide, in the episode, to be broadcast during the sitcom's final season early next year, preschooler Charlie (Mia Talerico) has a new friend with two moms. The family comes over to the Duncans' home during a playdate arranged by Amy and Bob Duncan (Leigh-Allyn Baker and Eric Allan Kramer).

While the characters are only expected to appear in this one episode and the storyline is secondary to the plot, the Disney Channel recognized the groundbreaking nature of including gay characters in its original programming.

“This particular storyline was developed under the consultancy of child development experts and community advisers,” a spokesperson told TV Guide. “Like all Disney Channel programming, it was developed to be relevant to kids and families around the world and to reflect themes of diversity and inclusiveness.”

Social conservatives last year criticized a Disney Channel ad campaign for including a teen with two moms.

(Related: Disney knocked for featuring teen with two moms in “Make Your Mark” campaign.)