diff --git a/CHANGELOG.md b/CHANGELOG.md
index 09c9baa2..c0b90dce 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [3.6.5] - 28 November 2023
+### Fixed
+- Make sure to use `gtm-checkout` in the checkout, not customerData `cart`
+
 ## [3.6.4] - 10 October 2023
 ### Fixed
 - Prevent addShippingInfo from triggering an error in integration API #195 @rhoerr
diff --git a/composer.json b/composer.json
index 9cca323f..a7230898 100644
--- a/composer.json
+++ b/composer.json
@@ -1,6 +1,6 @@
 {
   "name": "yireo/magento2-googletagmanager2",
-  "version": "3.6.4",
+  "version": "3.6.5",
   "license": "OSL-3.0",
   "type": "magento2-module",
   "homepage": "https://www.yireo.com/software/magento-extensions/googletagmanager2",
diff --git a/etc/frontend/sections.xml b/etc/frontend/sections.xml
index 74978435..f5f3cbf2 100644
--- a/etc/frontend/sections.xml
+++ b/etc/frontend/sections.xml
@@ -1,6 +1,9 @@
 <?xml version="1.0"?>
 <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Customer:etc/sections.xsd">
+    <action name="checkout/index/index">
+        <section name="gtm-checkout"/>
+    </action>
     <action name="checkout/onepage/success">
         <section name="gtm-checkout"/>
     </action>
diff --git a/view/frontend/web/js/checkout/payment-validator/reload-customer-data.js b/view/frontend/web/js/checkout/payment-validator/reload-customer-data.js
index 611ab07d..b6836514 100644
--- a/view/frontend/web/js/checkout/payment-validator/reload-customer-data.js
+++ b/view/frontend/web/js/checkout/payment-validator/reload-customer-data.js
@@ -6,7 +6,7 @@ define([
     return {
         validate: function () {
             logger('payment-validator-reload-customer-data');
-            customerData.reload(['cart'], true);
+            customerData.reload(['gtm-checkout'], true);
             return true;
         }
     }