diff --git a/database/migrations/2026_01_20_050000_make_referencia_nullable_on_orden_produccions.php b/database/migrations/2026_01_20_050000_make_referencia_nullable_on_orden_produccions.php
new file mode 100644
index 0000000..72926ca
--- /dev/null
+++ b/database/migrations/2026_01_20_050000_make_referencia_nullable_on_orden_produccions.php
@@ -0,0 +1,23 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::table('orden_produccions', function (Blueprint $table) {
+            // Hacer nullable la columna referencia para que no sea obligatorio en formularios
+            $table->string('referencia')->nullable()->change();
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('orden_produccions', function (Blueprint $table) {
+            $table->string('referencia')->nullable(false)->change();
+        });
+    }
+};
\ No newline at end of file