Ante Rebic scored the only goal of the game on Monday night.
“I think the result and the performance were good tonight, we risked little," Pioli told Sky Sport Italia.
“There are 14 games left, and I'm already thinking about the next game against Fiorentina in Florence.
“We have to think about winning as many games as possible between now and May.
“I made clear choices right away and got good answers. I believe our job is to always be under scrutiny. What we did tonight won't be worth anything if we don't do well in the next game.
“There is still a lot to do. We will see what the future holds at the end of the season.
“Zlatan Ibrahimovic was angry because he could've done better, and could've finished the game off sooner.
“It's only fair that we are ambitious."