diff --git a/helpers/FilterHelper.php b/helpers/FilterHelper.php
index d763336..4b1fec7 100755
--- a/helpers/FilterHelper.php
+++ b/helpers/FilterHelper.php
@@ -142,16 +142,17 @@
                 $query->andWhere([ 'product.id' => $last_query ]);
             }
         }
-        
+    
         /**
          * Tax Option filter
          *
          * @param string[]           $params
          * @param \yii\db\Query|null $last_query
+         * @param bool               $in_stock
          *
-         * @return Query
+         * @return \yii\db\Query
          */
-        private static function filterOptions(array $params, Query $last_query = null): Query
+        private static function filterOptions(array $params, Query $last_query = null, bool $in_stock = true): Query
         {
             $variant_query = ( new Query() )->distinct()
                                             ->select('product_variant.product_id as products')
@@ -169,6 +170,9 @@
                                                 'tax_option_lang.tax_option_id = tax_option.id'
                                             )
                                             ->where([ 'tax_option_lang.alias' => $params ]);
+            if($in_stock) {
+                $variant_query->andWhere(['!=', 'product_variant.stock', 0]);
+            }
             $product_query = ( new Query() )->distinct()
                                             ->select('product_option.product_id as products')
                                             ->from('product_option')
--
libgit2 0.21.4