---
title: Cart cookie value now includes key param - Shopify developer changelog
description: Shopify’s developer changelog documents all changes to Shopify’s platform. Find the latest news and learn about new platform opportunities.
source_url:
  html: https://shopify.dev/changelog/cart-cookie-value-now-includes-key-param
  md: https://shopify.dev/changelog/cart-cookie-value-now-includes-key-param.md
---

[Back to Developer changelog](https://shopify.dev/changelog)

May 6, 2024

Tags:

* Action Required
* Themes
* Liquid

# Cart cookie value now includes key param

The cart cookie value for the Online Store now includes a key param. Not including the key param will result in the removal of buyer details and your updates will be applied to a newly generated cart. This behavior is applied retroactively to all themes.

This change is rolling out now, and enforcement will go into effect after a grace period of 1 week.

**Example Format**

* Before: value=c1-7a2abe82733a34e84aa472d57fb5c3c1
* After: value=c1-7a2abe82733a34e84aa472d57fb5c3c1\*\*?key=824bdj25mhg1242bdb385\*\*

**Action Required**

Provide the complete cart cookie value which includes the key param as well as the cart token.

Ensure that theme code is free from hard-coded assumptions (ex. Using regex to identify a cart token) on the format and structure of the cart cookie. This is especially critical if the cart cookie is manually constructed. **If your theme utilizes the value set by default without modification, no action is needed.**