--- - |2+ Abstract Objective Value change stability was examined in a longitudinal sample of Jewish and Arab Israeli adolescents. Method Adolescents (N = 520; 55.4% girls; Mage = 13.76, SD = 0.52, at initial assessment) reported value importance at four annual evaluations. Results Adolescents increased in values’ internal coherence and rank‐order stability. Their value hierarchy was consistent and differentiated from the hierarchy of adults. Latent growth curve analyses indicated a similar pattern of mean‐level value change for both ethnic groups: an increase in power and a decrease in tradition values; an increase in self‐direction values among Jewish adolescents but not among Arab participants. Overall, the perceived importance of power, achievement, and self‐direction values was more likely to increase than decrease, and the importance of conformity, tradition, security, and benevolence values was more likely to decrease than increase. Intraindividual changes in value importance followed the postulated pattern, as compatible values changed together, whereas conflicting values changed in opposite directions. Conclusions This article suggests that values become better indicators of individual characteristics during adolescence. Adolescents increase their endorsement of self‐focused values and decrease their valuation of other‐focused values. They maintain the integrity of their value system despite value changes, confirming and validating value theory. - Journal of Personality, EarlyView.