diff --git a/app/Models/ProductionCharacteristic.php b/app/Models/ProductionCharacteristic.php
index 39cbb46..d065af5 100644
--- a/app/Models/ProductionCharacteristic.php
+++ b/app/Models/ProductionCharacteristic.php
@@ -10,6 +10,10 @@ class ProductionCharacteristic extends Model
 {
     use SoftDeletes;
 
+    protected $casts = [
+        'result' => 'array',
+    ];
+
     protected $fillable = [
         'plant_id',
         'line_id',
@@ -21,7 +25,9 @@ class ProductionCharacteristic extends Model
         'characteristic_name',
         'status',
         'inspection_status',
+        'inspection_lot_number',
         'remark',
+        'result',
         'created_at',
         'updated_at',
         'created_by',
diff --git a/database/migrations/2026_08_18_170336_add_inspection_lot_number_to_production_characteristics.php b/database/migrations/2026_08_18_170336_add_inspection_lot_number_to_production_characteristics.php
new file mode 100644
index 0000000..5b26055
--- /dev/null
+++ b/database/migrations/2026_08_18_170336_add_inspection_lot_number_to_production_characteristics.php
@@ -0,0 +1,31 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        $sql1 = <<<'SQL'
+        ALTER TABLE production_characteristics
+        ADD COLUMN inspection_lot_number TEXT DEFAULT NULL
+        SQL;
+
+        DB::statement($sql1);
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        // Schema::table('production_characteristics', function (Blueprint $table) {
+        //     //
+        // });
+    }
+};