diff --git a/app/Models/Tenants/Tenant.php b/app/Models/Tenants/Tenant.php
index 7f339674..3666906f 100644
--- a/app/Models/Tenants/Tenant.php
+++ b/app/Models/Tenants/Tenant.php
@@ -60,9 +60,6 @@ class Tenant extends Model
         'options',
         'tenant_st_code',
         'billing_tp_code',
-        'tenant_type',
-        'demo_expires_at',
-        'demo_source_partner_id',
     ];
 
     protected $guarded = [
@@ -384,14 +381,15 @@ public function getDemoLimits(): array
 
     /**
      * 데모 → 정식 테넌트로 전환
+     * fillable 밖의 컬럼이므로 forceFill 사용
      */
     public function convertToProduction(): void
     {
-        $this->update([
+        $this->forceFill([
             'tenant_type' => self::TYPE_STD,
             'demo_expires_at' => null,
             'demo_source_partner_id' => null,
-        ]);
+        ])->save();
 
         // options에서 데모 관련 키 제거
         $options = $this->options ?? [];