Consequently, the Merseyside outfit also secured their passage into next season's Champions League, but Allen has stressed the need for caution in the remaining three games as the club look to end a 24-year wait for the league title.
"It's an incredible achievement to bring Champions League football back to Liverpool. This club deserves to be in that competition," he told reporters at full time.
"We will not take anything for granted, every game is big game and we need to make sure we put in another big performance next week."
Liverpool host Chelsea at Anfield next week knowing that a victory would end the West Londoners' involvement in the title race this season.