At the moment, potential Grand Prix racers need just 300km in a F1 car before being eligible to participate and Boullier is adamant that the process is in need of change.
He told Autosport: "There are different problems. One is economic, in that some teams are selling Friday morning seats and are looking for some drivers who don't comply with the super licence rules.
"The other issue is that we have known for a few years that many many series have appeared and there is not a clear path to F1.
"So the super licence needs to be a little bit updated in the way it is given. Some series have disappeared, some series are still on, and the level of each series varies a lot."
Verstappen will replace Jean-Eric Vergne when he becomes the youngest driver in F1 history in 2015.