diff --git a/app/Models/ProductCharacteristicsMaster.php b/app/Models/ProductCharacteristicsMaster.php
index ecf6a3e..e1ea430 100644
--- a/app/Models/ProductCharacteristicsMaster.php
+++ b/app/Models/ProductCharacteristicsMaster.php
@@ -23,6 +23,7 @@ class ProductCharacteristicsMaster extends Model
         'upper',
         'lower',
         'middle',
+        'category',
         'created_at',
         'updated_at',
         'created_by',
diff --git a/database/migrations/2026_10_26_170015_add_category_column_to_product_characteristics_masters.php b/database/migrations/2026_10_26_170015_add_category_column_to_product_characteristics_masters.php
new file mode 100644
index 0000000..6e0493a
--- /dev/null
+++ b/database/migrations/2026_10_26_170015_add_category_column_to_product_characteristics_masters.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
+    {
+        $sql1 = <<<'SQL'
+        ALTER TABLE product_characteristics_masters
+        ADD COLUMN category TEXT DEFAULT NULL
+        SQL;
+
+        DB::statement($sql1);
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        // Schema::table('product_characteristics_masters', function (Blueprint $table) {
+        //     //
+        // });
+    }
+};