diff --git a/src/Eccube/Entity/Shipping.php b/src/Eccube/Entity/Shipping.php
index ea61226bee..52b0ff3c9e 100644
--- a/src/Eccube/Entity/Shipping.php
+++ b/src/Eccube/Entity/Shipping.php
@@ -239,7 +239,7 @@ public function getName02(): string
         /**
          * Set kana01.
          */
-        public function setKana01(string $kana01): Shipping
+        public function setKana01(?string $kana01): Shipping
         {
             $this->kana01 = $kana01;
 
@@ -249,7 +249,7 @@ public function setKana01(string $kana01): Shipping
         /**
          * Get kana01.
          */
-        public function getKana01(): string
+        public function getKana01(): ?string
         {
             return $this->kana01;
         }
@@ -257,7 +257,7 @@ public function getKana01(): string
         /**
          * Set kana02.
          */
-        public function setKana02(string $kana02): Shipping
+        public function setKana02(?string $kana02): Shipping
         {
             $this->kana02 = $kana02;
 
@@ -267,7 +267,7 @@ public function setKana02(string $kana02): Shipping
         /**
          * Get kana02.
          */
-        public function getKana02(): string
+        public function getKana02(): ?string
         {
             return $this->kana02;
         }
@@ -643,7 +643,7 @@ public function getOrder(): Order
         /**
          * Set trackingNumber
          */
-        public function setTrackingNumber(string $trackingNumber): Shipping
+        public function setTrackingNumber(?string $trackingNumber): Shipping
         {
             $this->tracking_number = $trackingNumber;