This article aims to discuss changes in attitudes towards immigrants in Sweden from 2015 onwards, based on the results of the longitudinal Diversity Barometer studies from 2005-2014, 2016 and 2018. The Diversity Barometer studies are based on a national, representative, and randomly selected sample from the Swedish population, with a new sample selected each time. We have analyzed the changes from a sociological perspective, using theories such as contact theory and group conflict theory. The results show an increase in negative attitudes towards ethic and cultural diversity generally, and towards immigrants specifically. Diversity in culture and religion – especially towards Islam – is more negatively perceived as compared to diversity in the work domain. Societal groups with extensive experience from contact with foreigners, those who identify themselves as women, those who are more educated, younger people and city dwellers, have all a more positive attitude towards diversity than others.