diff --git a/app/Util/MigrationHelper.php b/app/Util/MigrationHelper.php
index 38b3056..9371373 100644
--- a/app/Util/MigrationHelper.php
+++ b/app/Util/MigrationHelper.php
@@ -124,7 +124,7 @@ class MigrationHelper
     public  function contractId(bool $nullable = false)
     {
         $this->table->uuid(ColumnName::CONTRACT_ID)->comment("契約ID")->nullable($nullable);
-        $this->table->foreign(ColumnName::CONTRACT_ID)->references(ColumnName::ID)->on(Contract::getTableName());
+        // $this->table->foreign(ColumnName::CONTRACT_ID)->references(ColumnName::ID)->on(Contract::getTableName());
 
         return $this;
     }
@@ -132,14 +132,14 @@ class MigrationHelper
     public  function receiptIssuingOrderId(bool $nullable = false)
     {
         $this->table->uuid(ColumnName::RECEIPT_ISSUING_ORDER_ID)->comment("領収証発行依頼ID")->nullable($nullable);
-        $this->table->foreign(ColumnName::RECEIPT_ISSUING_ORDER_ID)->references(ColumnName::ID)->on(ReceiptIssuingOrder::getTableName());
+        // $this->table->foreign(ColumnName::RECEIPT_ISSUING_ORDER_ID)->references(ColumnName::ID)->on(ReceiptIssuingOrder::getTableName());
         return $this;
     }
 
     public  function smsSendOrderId(bool $nullable = false)
     {
         $this->table->uuid(ColumnName::SMS_SEND_ORDER_ID)->comment("SMS送信依頼ID")->nullable($nullable);
-        $this->table->foreign(ColumnName::SMS_SEND_ORDER_ID)->references(ColumnName::ID)->on(SMSSendOrder::getTableName());
+        // $this->table->foreign(ColumnName::SMS_SEND_ORDER_ID)->references(ColumnName::ID)->on(SMSSendOrder::getTableName());
         return $this;
     }
 
@@ -149,14 +149,14 @@ class MigrationHelper
         $columnName = $columnName ?? ColumnName::USER_ID;
         $comment = $comment ?? "ユーザーID";
         $this->table->uuid($columnName)->comment($comment)->nullable($nullable);
-        $this->table->foreign($columnName)->references(ColumnName::ID)->on(User::getTableName());
+        // $this->table->foreign($columnName)->references(ColumnName::ID)->on(User::getTableName());
         return $this;
     }
 
     public  function smsProviderId(bool $nullable = false)
     {
         $this->table->uuid(ColumnName::SMS_PROVIDER_ID)->comment("SMSプロバイダーID")->nullable($nullable);
-        $this->table->foreign(ColumnName::SMS_PROVIDER_ID)->references(ColumnName::ID)->on(SMSProvider::getTableName());
+        // $this->table->foreign(ColumnName::SMS_PROVIDER_ID)->references(ColumnName::ID)->on(SMSProvider::getTableName());
         return $this;
     }
 }