Understanding how memories of past experiences shape subjective feelings is complicated by the fact that we constantly update our memories. These updates are particularly impactful when individuals are reminded of emotionally positive or negative attributes of the original event. Yet, it remains unclear how such memory updating influences subjective feelings. Here, we investigated how the reactivation of emotional information affects episodic memory, subjective feelings, and their interaction. Across three experiments, participants first learned both positive and negative attributes associated with unfamiliar individuals. Then, they were reminded of a single positive or negative attribute for each individual to reactivate the memory partially. Finally, we reassessed memory for and subjective feelings about each individual’s attributes. In Experiments 1 and 2, these procedures were distributed across three days, while in Experiment 3, they occurred on a single day. Across these three experiments, reminding with negative attributes shifted subjective feelings in a negative direction. Reminded attributes were also better remembered, particularly for negative ones, and changes in subjective feelings were more strongly associated with reminded attributes. However, positive reminders only influenced subjective feelings to change positively when all procedures occurred on the same day. Together, these findings support a model in which memory updating shapes both episodic memory and emotional experience in a valence-dependent manner.