# Adds the ability to update line items on existing Checkout Sessions with a custom UI ## What’s new You can now update [line items](https://docs.stripe.com/api/checkout/sessions/update.md?api-version=2025-12-15.clover#update_checkout_session-line_items) when using [Elements](https://docs.stripe.com/payments/elements.md) with [Checkout Sessions](https://docs.stripe.com/api/checkout/sessions.md?api-version=2025-12-15.clover). Additionally, you can now create and update line item [metadata](https://docs.stripe.com/api/checkout/sessions/update.md?api-version=2025-12-15.clover#update_checkout_session-metadata). ## Impact You can now modify session details after creating a session. This change enables more dynamic checkout flows, such as updating a shopping cart, changing promotional pricing, or adding custom tracking information through metadata. When you [update a Checkout Session](https://docs.stripe.com/api/checkout/sessions/update.md?api-version=2025-12-15.clover) with a custom UI mode you can now: - Update line item [price](https://docs.stripe.com/api/checkout/sessions/update.md?api-version=2025-12-15.clover#update_checkout_session-line_items-price), [quantity](https://docs.stripe.com/api/checkout/sessions/update.md?api-version=2025-12-15.clover#update_checkout_session-line_items-quantity), and [tax_rates](https://docs.stripe.com/api/checkout/sessions/update.md?api-version=2025-12-15.clover#update_checkout_session-line_items-tax_rates) - Add and modify [metadata](https://docs.stripe.com/api/checkout/sessions/update.md?api-version=2025-12-15.clover#update_checkout_session-metadata) on the session - Use [price_data](https://docs.stripe.com/api/checkout/sessions/update.md?api-version=2025-12-15.clover#update_checkout_session-line_items-price_data) to create prices inline - Enable [adjustable_quantity](https://docs.stripe.com/api/checkout/sessions/update.md?api-version=2025-12-15.clover#update_checkout_session-line_items-adjustable_quantity) to let customers modify quantities during checkout See the [related guide](https://docs.stripe.com/payments/advanced/dynamically-update-line-items.md) for more examples. ## Changes #### REST API | Parameter | Change | Resources or endpoints | | ---------- | ------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | `metadata` | Added | [Checkout.Session#create.line_items[]](/api/checkout/sessions/create?api-version=2025-12-15.clover#create_checkout_session-line_items), `LineItem`, [Checkout.Session#update](/api/checkout/sessions/update?api-version=2025-12-15.clover) | #### Ruby | Parameter | Change | Resources or methods | | ---------- | ------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `metadata` | Added | [Checkout::SessionCreateParams::LineItem](/api/checkout/sessions/create?api-version=2025-12-15.clover#create_checkout_session-line_items), `LineItem`, [Checkout::SessionUpdateParams](/api/checkout/sessions/update?api-version=2025-12-15.clover) | #### Python | Parameter | Change | Resources or methods | | ---------- | ------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `metadata` | Added | `LineItem`, [checkout.SessionCreateParamsLineItem](/api/checkout/sessions/create?api-version=2025-12-15.clover#create_checkout_session-line_items), [checkout.SessionModifyParams](/api/checkout/sessions/update?api-version=2025-12-15.clover) | #### PHP | Parameter | Change | Resources or methods | | ---------- | ------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `metadata` | Added | [Checkout\Session.create().$params.line_item](/api/checkout/sessions/create?api-version=2025-12-15.clover#create_checkout_session-line_items), `LineItem`, [Checkout\Session.update().$params](/api/checkout/sessions/update?api-version=2025-12-15.clover) | #### Java | Parameter | Change | Resources or methods | | ---------- | ------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `metadata` | Added | `LineItem`, [checkout.SessionCreateParams.line_items[]](/api/checkout/sessions/create?api-version=2025-12-15.clover#create_checkout_session-line_items), [checkout.SessionUpdateParams](/api/checkout/sessions/update?api-version=2025-12-15.clover) | #### Node.js | Parameter | Change | Resources or methods | | ---------- | ------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `metadata` | Added | [Checkout.SessionCreateParams.line_items[]](/api/checkout/sessions/create?api-version=2025-12-15.clover#create_checkout_session-line_items), `LineItem`, [Checkout.SessionUpdateParams](/api/checkout/sessions/update?api-version=2025-12-15.clover) | #### Go | Parameter | Change | Resources or methods | | ---------- | ------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `Metadata` | Added | [CheckoutSessionLineItemParams](/api/checkout/sessions/create?api-version=2025-12-15.clover#create_checkout_session-line_items), `LineItem`, [CheckoutSessionParams](/api/checkout/sessions/update?api-version=2025-12-15.clover) | #### .NET | Parameter | Change | Resources or methods | | ---------- | ------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | `Metadata` | Added | [CheckoutSessionLineItemOptions](/api/checkout/sessions/create?api-version=2025-12-15.clover#create_checkout_session-line_items), `LineItem`, [Checkout.SessionUpdateOptions](/api/checkout/sessions/update?api-version=2025-12-15.clover) | ## Upgrade #### REST API 1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench. 1. If you use an SDK, upgrade to the corresponding SDK version for this API version. - If you don’t use an SDK, update your [API requests](https://docs.stripe.com/api/versioning.md) to include `Stripe-Version: 2025-12-15.clover` 1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md). 1. [Test your integration](https://docs.stripe.com/testing.md) against the new version. 1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md). 1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours. Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md). #### Ruby 1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench. 1. Upgrade your Ruby SDK to [v18.2.0](https://github.com/stripe/stripe-ruby/releases/tag/v18.2.0) 1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md). 1. [Test your integration](https://docs.stripe.com/testing.md) against the new version. 1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md). 1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours. Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md). #### Python 1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench. 1. Upgrade your Python SDK to [v14.2.0](https://github.com/stripe/stripe-python/releases/tag/v14.2.0) 1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md). 1. [Test your integration](https://docs.stripe.com/testing.md) against the new version. 1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md). 1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours. Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md). #### PHP 1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench. 1. Upgrade your PHP SDK to [v19.2.0](https://github.com/stripe/stripe-php/releases/tag/v19.2.0) 1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md). 1. [Test your integration](https://docs.stripe.com/testing.md) against the new version. 1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md). 1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours. Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md). #### Java 1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench. 1. Upgrade your Java SDK to [v31.2.0](https://github.com/stripe/stripe-java/releases/tag/v31.2.0) 1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md). 1. [Test your integration](https://docs.stripe.com/testing.md) against the new version. 1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md). 1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours. Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md). #### Node.js 1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench. 1. Upgrade your Node SDK to [v20.2.0](https://github.com/stripe/stripe-node/releases/tag/v20.2.0) 1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md). 1. [Test your integration](https://docs.stripe.com/testing.md) against the new version. 1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md). 1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours. Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md). #### Go 1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench. 1. Upgrade your Go SDK to [v84.2.0](https://github.com/stripe/stripe-go/releases/tag/v84.2.0) 1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md). 1. [Test your integration](https://docs.stripe.com/testing.md) against the new version. 1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md). 1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours. Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md). #### .NET 1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench. 1. Upgrade your .NET SDK to [v50.2.0](https://github.com/stripe/stripe-dotnet/releases/tag/v50.2.0) 1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md). 1. [Test your integration](https://docs.stripe.com/testing.md) against the new version. 1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md). 1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours. Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md).