diff --git a/openapi.yaml b/openapi.yaml
index a8f89f7..98f9a77 100644
--- a/openapi.yaml
+++ b/openapi.yaml
@@ -201,7 +201,7 @@ paths:
         content:
           application/json:
             schema:
-              $ref: '#/components/schemas/PostCustomerRequest'
+              $ref: '#/components/schemas/PatchCustomerRequest'
       responses:
         '200':
           description: OK
@@ -517,6 +517,19 @@ components:
       required:
         - email
         - name
+    PatchCustomerRequest:
+      description: Customer 更新リクエスト (すべてのフィールドはオプショナル)
+      type: object
+      properties:
+        email:
+          type: string
+          description: Email
+        name:
+          type: string
+          description: Name
+        traq_id:
+          type: string
+          description: traQ ID
     PostInvoiceRequest:
       description: Invoice 作成リクエスト
       type: object
diff --git a/server/gen.go b/server/gen.go
index 9cf1101..5f143ab 100644
--- a/server/gen.go
+++ b/server/gen.go
@@ -142,6 +142,18 @@ type GetInvoicesResponse struct {
 // InvoiceStatus 請求書ステータス
 type InvoiceStatus string
 
+// PatchCustomerRequest Customer 更新リクエスト (すべてのフィールドはオプショナル)
+type PatchCustomerRequest struct {
+	// Email Email
+	Email *string `json:"email,omitempty"`
+
+	// Name Name
+	Name *string `json:"name,omitempty"`
+
+	// TraqId traQ ID
+	TraqId *string `json:"traq_id,omitempty"`
+}
+
 // PostCustomerRequest Customer 作成リクエスト
 type PostCustomerRequest struct {
 	// Email Email
@@ -322,7 +334,7 @@ type PostWebhookInvoicePaidParams struct {
 }
 
 // PatchCustomerJSONRequestBody defines body for PatchCustomer for application/json ContentType.
-type PatchCustomerJSONRequestBody = PostCustomerRequest
+type PatchCustomerJSONRequestBody = PatchCustomerRequest
 
 // PostCustomerJSONRequestBody defines body for PostCustomer for application/json ContentType.
 type PostCustomerJSONRequestBody = PostCustomerRequest
@@ -769,61 +781,62 @@ func RegisterHandlersWithBaseURL(router EchoRouter, si ServerInterface, baseURL
 // Base64 encoded, gzipped, json marshaled Swagger object
 var swaggerSpec = []string{
 
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 }
 
 // GetSwagger returns the content of the embedded swagger specification file