diff --git a/backend/src/main/java/com/storycove/controller/StoryController.java b/backend/src/main/java/com/storycove/controller/StoryController.java
index 272050c..ef4aaab 100644
--- a/backend/src/main/java/com/storycove/controller/StoryController.java
+++ b/backend/src/main/java/com/storycove/controller/StoryController.java
@@ -557,6 +557,9 @@ public class StoryController {
             if (updateReq.getSeriesId() != null) {
                 Series series = seriesService.findById(updateReq.getSeriesId());
                 story.setSeries(series);
+                if (updateReq.getVolume() != null) {
+                    story.setVolume(updateReq.getVolume());
+                }
             } else if (updateReq.getSeriesName() != null) {
                 logger.info("Processing series update: seriesName='{}', isEmpty={}", updateReq.getSeriesName(), updateReq.getSeriesName().trim().isEmpty());
                 if (updateReq.getSeriesName().trim().isEmpty()) {