In this paper, we introduce Voxento 4.0 – an interactive voice-based retrieval system for lifelogs which has been developed to participate in the sixth Lifelog Search Challenge LSC’23, at ACM ICMR’23. Voxento has participated three times in the LSC editions and achieved the rank of 4th in LSC21 and 5th in LSC22 respectively. In this version, Voxento 4.0, we have focused on improving the previous system’s interface, voice interaction and retrieval functionality. The current version has implemented some processing and cleaning of the dataset and employs the CLIP model to extract image features. In addition, the system’s interface was redesigned for better visualisation of the elements and the images for effective interaction. This improvement in the interface will help to support voice interaction in future work. The interface developments include logging voice interaction and images displayed, submitted, selected and starred to enhance user experience with the system. The voice interaction part has also been enhanced in the workflow of the voice lifecycle interaction and with additional voice commands.