The Duggar family may soon be growing even larger! Sisters Jill Dillard and Jessa Seewald are all grown up and have each had a child of their own — but could more babies be on the horizon for the conservative Christian siblings?

During Tuesday’s finale of their TLC series “Jill and Jessa: Counting On,” the pair opened up about their plans for family expansion. During the episode, Jessa, 23 — joined by husband Ben Seewald and son Spurgeon Seewald — traveled from their home in Arkansas to Central America where Jill, 24, and her family are doing missionary work. The visit allowed cousins Spurgeon and Israel Dillard to meet and bond for the first time. During a one-on-one interview with Jill and Jessa, a producer, taking note of just how close the Duggar family truly is, questioned the sisters about future children and which one would be the first to reproduce again.

“I think we will probably be pregnant at the same time,” Jill said. “But to say who will be first, well Israel is older ... so we will see.”

Perhaps the elder Duggar girls are plotting potential pregnancies due to the strengthened status of their respective marriages. In an earlier episode of “Counting On,” Jessa opened up about the positive outcomes of her brother Josh Duggar’s cheating scandal. During the show, Jessa said that his infidelity reminded her and husband Ben of the vows they made on their wedding day and “strengthened our resolve.”

While their marital bond may be renewed, this is hardly the first time Jessa and Ben have spoken about their desire to have more children. Both have been public about their desire to one day adopt, though they are not rushing into anything. The pair spoke about their hopes in March 2015 during the Southern Women’s Show in Nashville, Tennessee, though they shared that their adoption plans were put on hold due to legal hang-ups. Arkansas state law requires that a couple be married for two years before adopting a child together. Ben and Jessa married in November 2014.

It remains unclear whether Jill or Jessa are currently expecting.