New digital technologies have prompted many firms, including family firms, to innovate their business models. We study the role of dynamic capabilities as mediator in the relationship between family influence and digital business model innovation (BMI), and the moderating role of environmental dynamism. Based on unique survey data from 1,444 German firms with and without family influence, we reveal that knowledge exploitation, risk management, and marketing capabilities mediate the positive relationship between family influence and digital BMI. Surprisingly, and contrary to our assumption, we find that the positive relationship between family influence and dynamic capabilities is weakened rather than strengthened by environmental dynamism. Our findings hold important implications for family business innovation and digital BMI research, offering valuable insights into the role of dynamic capabilities and environmental dynamism in the digital economy.