Millennials are a generation of people who will soon become the main purchasing power. These are people born approximately between 1980 and 2000. The aim of the article is to find out how the shopping of products has changed by millennials in connection with the COVID-19 pandemic. We were interested in whether the quantity of purchased products changed during the pandemic and whether the composition of the shopping cart of consumers aged from 22 to 42 years changed. The research was conducted using a questionnaire method. At the end of the article, based on the results of the research, we will propose recommendations for retailers aimed at millennials in case of possible future changes in consumer behaviour due to unexpected situations.