The goal of the study is to contribute to the problem in hand regarding the insufficiently developed digital competencies of teachers of social scientific subjects within the secondary education. The solution to it is based on a precondition that if the teachers will not be digitally competent they will not be able to develop the digital competence of students. This fact can negatively affect their ability to find employment at the labour market of the 21st century, preparedness to further professional education and ability to participate at the lifelong learning. The text at issue solves the problem of digital technology integration into teaching of social sciences, emphasizes multidisciplinary approach to the humanities, social and technological sciences, presents the need of development of teachers´ technical thinking relating to social scientific subjects and specifies common features and differences of the pedagogical and technological sciences. The study is the actual output of the project TAČR (PID: TL 01000192, in the period 02/2018 – 02/2021). It is based on the sub-chapter ”Integration of the digital technology into teaching of social sciences” that will be embodied in the currently prepared monograph “Development of teachers´ digital competencies relating to social scientific subjects at vocational schools”.