diff --git a/.github/workflows/e2e.yml b/.github/workflows/e2e.yml
index ccb4e0ab..84062bd2 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#6.3'}
+          - {name: 'WP minimum', version: 'WordPress/WordPress#6.4'}
           - {name: 'WP trunk', version: 'WordPress/WordPress#master'}
 
     steps:
diff --git a/mailchimp.php b/mailchimp.php
index babb9572..1a59fc6b 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:           1.7.0
- * Requires at least: 6.3
+ * Requires at least: 6.4
  * Requires PHP:      7.0
  * PHP tested up to:  8.3
  * Author:            Mailchimp
diff --git a/phpcs-compat.xml b/phpcs-compat.xml
index 5e1f0c01..3dbb2557 100644
--- a/phpcs-compat.xml
+++ b/phpcs-compat.xml
@@ -12,6 +12,6 @@
 	<exclude-pattern>*/node_modules/*</exclude-pattern>
 	<exclude-pattern>*/vendor/*</exclude-pattern>
 
-	<config name="minimum_supported_wp_version" value="6.3"/>
+	<config name="minimum_supported_wp_version" value="6.4"/>
 	<config name="testVersion" value="7.0-"/>
 </ruleset>
diff --git a/phpcs.xml b/phpcs.xml
index 477bdbc9..555ec4b2 100644
--- a/phpcs.xml
+++ b/phpcs.xml
@@ -6,7 +6,7 @@
 
 	<exclude-pattern>*/tests/*</exclude-pattern>
 
-	<config name="minimum_supported_wp_version" value="6.3"/>
+	<config name="minimum_supported_wp_version" value="6.4"/>
 	<config name="testVersion" value="7.0-"/>
 
 	<!-- Exclude the PHPCompatibilityWP ruleset -->
diff --git a/readme.txt b/readme.txt
index 5e43b2e0..6ba2ed76 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: 6.7
+Tested up to: 6.8
 Stable tag:   1.7.0
 License:      GPL-2.0-or-later
 License URI:  https://spdx.org/licenses/GPL-2.0-or-later.html