---
title: customerUpdate - Storefront API
description: Updates an existing customer.
api_version: 2025-10
api_name: storefront
type: mutation
api_type: graphql
source_url:
  html: https://shopify.dev/docs/api/storefront/latest/mutations/customerUpdate
  md: https://shopify.dev/docs/api/storefront/latest/mutations/customerUpdate.md
---

# customer​Update

mutation

Requires `unauthenticated_write_customers` access scope.

Updates an existing customer.

## Arguments

* customer

  [Customer​Update​Input!](https://shopify.dev/docs/api/storefront/latest/input-objects/CustomerUpdateInput)

  required

  The customer object input.

* customer​Access​Token

  [String!](https://shopify.dev/docs/api/storefront/latest/scalars/String)

  required

  The access token used to identify the customer.

***

## Customer​Update​Payload returns

* customer

  [Customer](https://shopify.dev/docs/api/storefront/latest/objects/Customer)

  The updated customer object.

* customer​Access​Token

  [Customer​Access​Token](https://shopify.dev/docs/api/storefront/latest/objects/CustomerAccessToken)

  The newly created customer access token. If the customer's password is updated, all previous access tokens (including the one used to perform this mutation) become invalid, and a new token is generated.

* customer​User​Errors

  [\[Customer​User​Error!\]!](https://shopify.dev/docs/api/storefront/latest/objects/CustomerUserError)

  non-null

  The list of errors that occurred from executing the mutation.

* user​Errors

  [\[User​Error!\]!](https://shopify.dev/docs/api/storefront/latest/objects/UserError)

  non-nullDeprecated

  The list of errors that occurred from executing the mutation.

***

## Examples

* ### customerUpdate reference

## Mutation Reference

```graphql
mutation customerUpdate($customerAccessToken: String!, $customer: CustomerUpdateInput!) {
  customerUpdate(customerAccessToken: $customerAccessToken, customer: $customer) {
    customer {
      # Customer fields
    }
    customerAccessToken {
      # CustomerAccessToken fields
    }
    customerUserErrors {
      # CustomerUserError fields
    }
  }
}
```

## Input

```json
{
  "customerAccessToken": "<your-customerAccessToken>",
  "customer": {
    "firstName": "<your-firstName>",
    "lastName": "<your-lastName>",
    "email": "<your-email>",
    "phone": "<your-phone>",
    "password": "<your-password>",
    "acceptsMarketing": true
  }
}
```