This study aimed to prepare, implement and evaluate the effectiveness of a professional development program that develops Technological Pedagogical Content Knowledge (TPACK) of teacher educators. Qualitative research methods were used. The research was carried out with 10 teacher educators from different departments. Pre- and post-interviews were conducted to evaluate the effectiveness of the program. The program was found to have positive effects. Teacher educators stated that while transferring the knowledge they gained to the classroom environment, the methods they used could affect the education positively and attract the attention of students. Therefore, they planned to use the knowledge they acquired later on. They realized that with the knowledge they gained through this program, they would be a role model for the teachers of the future. At the end of the program, each participant's TPACK development was in line with their own cognitive readiness.