Abstract The increase of atmospheric CO₂ concentrations changes the atmospheric temperature distribution, which in turn affects the circulation. A robust circulation response to CO₂ forcing is the strengthening of the stratospheric Brewer-Dobson circulation (BDC), with associated consequences for transport of trace gases such as ozone. Ozone is further affected by the CO₂-induced stratospheric cooling via the temperature-dependency of ozone chemistry. These ozone changes in turn influence stratospheric temperatures and thereby modify the CO₂-induced circulation changes. In this study, we perform dedicated model simulations to quantify the modification of the circulation response to CO₂ forcing by stratospheric ozone. Specifically, we compare simulations of the atmosphere with pre-industrial and with quadrupled CO₂ climate conditions, in which stratospheric ozone is held fixed or is adapted to the new climate state. The results of the residual circulation and mean age of air show that ozone changes damp the CO₂-induced BDC increase by up to 20%. This damping of the BDC strengthening is linked to an ozone-induced relative enhancement of the meridional temperature gradient in the lower stratosphere in summer, thereby leading to stronger stratospheric easterlies that suppress wave propagation. Additionally, we find a systematic weakening of the polar vortices in winter and spring. In the Southern Hemisphere, ozone reduces the CO₂-induced delay of the final warming date by 50%.