The importance of a qualitative renewal of the additional professional training system for Russian language teachers of foreign schools gives rise to many problems of both theoretical and organizational nature. The following ones are particularly relevant: 1) the determination of professional deficits of teaching staff; 2) the identification of gaps in the current system of additional professional training for Russian as a foreign language teachers; 3) the correction of the identified professional deficiencies through additional educational programs on various directions and degrees of complexity. This study offers the options for modular educational programs for additional training in three fields of activity (subject, organizational, methodological, psychological): 1) the program “Difficult cases of Russian grammar and Russian word usage”, aimed at eliminating gaps in the field of subject competences; 2) the program “Problems of teaching the Russian language in a limited language environment”, aimed at eliminating gaps in the organizational and methodological sphere; 3) the program “Psychological foundations of organizing educational activities in a foreign language”, aimed at eliminating gaps in the field of psychological competencies. Sequential remote implementation of modules included in additional professional training programs will provide access to up-to-date methodological knowledge for a large number of teachers of Russian as a foreign language.