The worsening climate of political violence and repression in Argentina during 1975 led Oski to move to Barcelona, Spain late that year, where he briefly worked for Lumen Publishing. Relocating to Rome in 1976, he illustrated a number of left-leaning periodicals such as Italy's "L'Unità", though his declining health and a certain loosening of restrictions by Argentina's dictatorship in 1979 led him to return. Contributing a segment in a public television mockumentary of the 1978 FIFA World Cup (won by Argentina), Oski died on October 30, 1979, at 65. Numerous posthumous anthologies of his work have been published since, notably "El Maestroski" in 1989.