Future's baby mama, Jessica Smith, is asking the rapper to pay up ... again.

According to TMZ, the pair had previously struck a child support agreement where Future agreed to pay $1,162 a month for their 10-year-old son, with the understanding that his monthly income was $16,516.

But now Smith believes that Future lied to the judge about his net worth since in an interview that aired a few days after the agreement, he said he carries $25,000 at all times.

The site reports that Smith went back to court and filed new docs to invalidate their deal and increase his child support obligation, since she thinks his actual monthly income exceeds $50,000. We'll keep you updated on how that turns out.

Future recently confirmed he was dating Ciara.

Watch Future's "Tony Montana" Video