Oxford United boss Chris Wilder has warned his side that competition for places will be fierce next season as he plans to recruit new players.
Oxford finished 12th in League Two and Wilder has hinted that no player is guaranteed a first-team place.
"I said to the players it's going to be a tough school because we're bringing in better players," he told BBC Oxford.
"We're not hanging about. We're bringing players in and they will have to look around and be more consistent."
The U's boss continued: "We've won at this football club, we've proved that we've done well and we want to continue to do well.
"So we have to get on with it and we'll have to bring players in that makes us better and stronger."
Oxford lost their last game of the season 3-0 at Shrewsbury to sit five points points below the play-off places and Wilder admits he will be looking for more consistency next season.
"At Shrewsbury at times the players we're giving seven or eight out of 10 and in other bits it was four or fives. That was our season in a game really," he said.
"I thank the players for their efforts, they gave it a go and there were some tired bodies out there.
"But as I said we'll move on and look forward to next year. It's been a satisfying season but we're always looking to get better."