diff --git a/frontend/src/app/authors/[id]/page.tsx b/frontend/src/app/authors/[id]/page.tsx
index 7765f1e..b8a040a 100644
--- a/frontend/src/app/authors/[id]/page.tsx
+++ b/frontend/src/app/authors/[id]/page.tsx
@@ -27,7 +27,9 @@ function buildDisplayItems(stories: Story[], authorId: string): DisplayItem[] {
   for (const story of sorted) {
     if (story.seriesId) {
       if (!addedSeries.has(story.seriesId)) {
-        const seriesStories = sorted.filter(s => s.seriesId === story.seriesId);
+        const seriesStories = sorted
+          .filter(s => s.seriesId === story.seriesId)
+          .sort((a, b) => (a.volume ?? Infinity) - (b.volume ?? Infinity));
         items.push({
           type: 'series',
           seriesId: story.seriesId,