The board of the International Committee of Historical Sciences (ICHS/CISH) and the organizing committee of the ICHS/CISH Congress formally have agreed that the XXIII Congress in Poznań will indeed be held on 22–28 August 2021 regardless of the circumstances. Every effort will be made to hold it in a traditional “face to face” form – in compliance with recommended health protocols and with the utmost care for the safety of participants. However, in the face of the pandemic spread of Covid-19, the organizing committee, in close contact with the ICHS board, is considering the possibility of offering participation in some congress events also on a virtual basis.