diff --git a/Controllers/SlidesController.cs b/Controllers/SlidesController.cs
index 29cf997..f606dc0 100644
--- a/Controllers/SlidesController.cs
+++ b/Controllers/SlidesController.cs
@@ -73,6 +73,7 @@ public class SlidesController : Controller
         existing.BackgroundColor = slide.BackgroundColor;
         existing.BackgroundImage = slide.BackgroundImage;
         existing.BackgroundSize = slide.BackgroundSize;
+        existing.ExpiresAt = slide.ExpiresAt;
         existing.UpdatedAt = DateTime.UtcNow;
 
         await _db.SaveChangesAsync();