The Reds celebrated ending a 30-year wait to be crowned champions of England last week when second-placed Manchester City were beaten at Chelsea.
Liverpool have won their first Premier League title with ease, leading City by 23 points with seven games to spare ahead of their encounter at the Etihad Stadium on Thursday.
Klopp expects Liverpool to face strong competition next year – and not just from Pep Guardiola’s City squad.
He added: “City will be strong next season, Manchester United will be strong next season, Chelsea will be strong next season.
“We have to play 38 games during the year. What we achieved last week is something for the history books.”
“Next season, you can write stories about us being the defending champions or whatever, but that is why I say – we will not defend anything, we will attack it.