Like others, Ferrari is introducing parts in Monaco that were supposed to have made their debut at the cancelled Imola race.
Another package is due next week in Barcelona, where traditionally teams try to make a significant step with a major update.
However, Vasseur says it is best to not read too much into the outcome of the Spanish weekend, as it will represent just one step in an ongoing effort to improve the SF-73.
"We are not supposed to bring updates in Monaco because it's a tricky one,” said Vasseur.
“And we want to be much more focused on the set-up and the driving during the weekend.
“But what we were supposed to bring in Imola will hit the track this weekend. And we'll have another step forward in Barcelona next week.
“It's not the easiest one to do an update on the car in Monaco, because I think it's more important for the team to be focused on the driving and the set-up.
“But if per plan you were supposed to have something in Imola, we would be stupid to not put it on the car. And we were supposed to have just a small update in Imola, and we'll bring it tomorrow [Friday]."
Regarding the significance of the Spanish GP package, he said: “Barcelona, for sure, it will be an update on the car, but we are not planning to bring a big package each five races.
“We will bring small update every single race. And I don't want to say that it's Barcelona or nothing. After Barcelona we will have a small update in Montreal, and another one in UK/Austria.
Source: Autosport