diff --git a/.github/workflows/e2e.yml b/.github/workflows/e2e.yml
index 84062bd2..d6fd552f 100644
--- a/.github/workflows/e2e.yml
+++ b/.github/workflows/e2e.yml
@@ -27,7 +27,7 @@ jobs:
       matrix:
         core:
           - {name: 'WP latest', version: 'latest'}
-          - {name: 'WP minimum', version: 'WordPress/WordPress#6.4'}
+          - {name: 'WP minimum', version: 'WordPress/WordPress#6.6'}
           - {name: 'WP trunk', version: 'WordPress/WordPress#master'}
 
     steps:
diff --git a/mailchimp.php b/mailchimp.php
index caf1cd26..e06549c9 100644
--- a/mailchimp.php
+++ b/mailchimp.php
@@ -5,7 +5,7 @@
  * Description:       Add a Mailchimp signup form block, widget or shortcode to your WordPress site.
  * Text Domain:       mailchimp
  * Version:           2.0.1
- * Requires at least: 6.4
+ * Requires at least: 6.6
  * Requires PHP:      7.0
  * PHP tested up to:  8.3
  * Author:            Mailchimp
diff --git a/phpcs.xml b/phpcs.xml
index 555ec4b2..ea8ca060 100644
--- a/phpcs.xml
+++ b/phpcs.xml
@@ -6,7 +6,7 @@
 
 	<exclude-pattern>*/tests/*</exclude-pattern>
 
-	<config name="minimum_supported_wp_version" value="6.4"/>
+	<config name="minimum_supported_wp_version" value="6.6"/>
 	<config name="testVersion" value="7.0-"/>
 
 	<!-- Exclude the PHPCompatibilityWP ruleset -->
diff --git a/readme.txt b/readme.txt
index 91703902..0838902f 100644
--- a/readme.txt
+++ b/readme.txt
@@ -1,7 +1,7 @@
 === Mailchimp List Subscribe Form ===
 Contributors: Mailchimp
 Tags:         mailchimp, email, newsletter, signup, marketing
-Tested up to: 6.9
+Tested up to: 7.0
 Stable tag:   2.0.1
 License:      GPL-2.0-or-later
 License URI:  https://spdx.org/licenses/GPL-2.0-or-later.html