The dependent doesn't qualify for 2020, but look at the link for 2021:

https://www.irs.gov/newsroom/irs-is-issuing-third-round-of-economic-impact-payments

(and I will update my macro link)

"Qualifying dependents expanded. Unlike the first two payments, the third payment is not restricted to children under 17. Eligible individuals will get a payment based on all of their qualifying dependents claimed on their return, including older relatives like college students, adults with disabilities, parents and grandparents."