diff --git a/models/Category.php b/models/Category.php
index 4e1834351..984698611 100644
--- a/models/Category.php
+++ b/models/Category.php
@@ -4,6 +4,7 @@
 
 namespace OFFLINE\Mall\Models;
 
+use Cache;
 use DB;
 use Illuminate\Support\Facades\Queue;
 use Model;
@@ -12,7 +13,9 @@
 use October\Rain\Database\Traits\SortableRelation;
 use October\Rain\Database\Traits\Validation;
 use October\Rain\Support\Collection;
+use OFFLINE\Mall\Classes\Index\Index;
 use OFFLINE\Mall\Classes\Jobs\PropertyRemovalUpdate;
+use OFFLINE\Mall\Classes\Observers\ProductObserver;
 use OFFLINE\Mall\Classes\Traits\Category\MenuItems;
 use OFFLINE\Mall\Classes\Traits\Category\Properties;
 use OFFLINE\Mall\Classes\Traits\Category\Slug;
@@ -24,7 +27,9 @@ class Category extends Model
     use Validation;
     use SoftDelete;
     use NestedTree;
-    use SortableRelation;
+    use SortableRelation {
+        setSortableRelationOrder as traitSetSortableRelationOrder;
+    }
     use MenuItems;
     use Slug;
     use Translation;
@@ -319,4 +324,13 @@ public function getInheritedReviewCategories()
 
         return $groups ?? new Collection();
     }
+
+    public function setSortableRelationOrder($relationName, $itemIds, $referencePool = null) {
+        $this->traitSetSortableRelationOrder($relationName, $itemIds, $referencePool);
+
+        $this->products->each(function (Product $product) {
+            Cache::forget(Product::sortOrderCacheKey($product->id));
+            (new ProductObserver(app(Index::class)))->updated($product);
+        });
+    }
 }
diff --git a/updates/version.yaml b/updates/version.yaml
index ab0097653..e5c1ef6a8 100644
--- a/updates/version.yaml
+++ b/updates/version.yaml
@@ -629,3 +629,5 @@ v3.5.13:
     - 'Fixed RainLab.User v3 compatibility'
 v3.5.14:
     - 'Support for more flexible model extensions in the backend (thanks to @xyz1123581321)'
+v3.5.15:
+    - 'Fixed category-specific manual sort orders'