Brushing that off as "rumours", De Silvestro says she'll stay on in 2019, when Nissan's financial support of Kelly Racing concludes.
"There were a lot of rumours," De Silvestro said in a sitdown interview with Fox Sport's Jessica Yates.
"I'll be with Nissan next year, I'm really excited to continue, actually. I think we learned a lot this year to get better, the car has also improved.
"Hopefully over the [off-season] we'll get a little bit better and having that relationship working really well with Chris [Stuckey, new-for-2018 engineer] I think is going to give us a bigger step for next year."