diff --git a/.github/workflows/cypress.yml b/.github/workflows/cypress.yml
index 7a90173..bf9f49d 100644
--- a/.github/workflows/cypress.yml
+++ b/.github/workflows/cypress.yml
@@ -16,7 +16,7 @@ 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:
     - name: Checkout
diff --git a/README.md b/README.md
index 26ad419..868c0e3 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ This plugin integrates Apple's [MapKit JS](https://developer.apple.com/maps/mapk
 ## Requirements
 
 * PHP 7.4+
-* [WordPress](http://wordpress.org/) 5.8+
+* [WordPress](http://wordpress.org/) 6.4+
 * Due to the requirements applied by Apple to use Apple Maps ([MapkitJS](https://developer.apple.com/maps/mapkitjs/)), Apple Maps for WordPress requires an [Apple Developer](https://developer.apple.com/) [account](https://developer.apple.com/account/) and enrollment within the [Apple Developer Program](https://developer.apple.com/programs/).
 
 ## Installation
diff --git a/maps-block-apple.php b/maps-block-apple.php
index f806e52..0680669 100644
--- a/maps-block-apple.php
+++ b/maps-block-apple.php
@@ -4,7 +4,7 @@
  * Plugin URI:        https://github.com/10up/maps-block-apple
  * Description:       An Apple Maps block for the WordPress block editor (Gutenberg).
  * Version:           1.1.3
- * Requires at least: 6.3
+ * Requires at least: 6.4
  * Requires PHP:      7.4
  * Author:            10up
  * Author URI:        https://10up.com
diff --git a/readme.txt b/readme.txt
index 60928d0..9942e9b 100644
--- a/readme.txt
+++ b/readme.txt
@@ -1,7 +1,7 @@
 === Block for Apple Maps ===
 Contributors:      10up, helen, welcher, fabiankaegy, dinhtungdu, jeffpaul
 Tags:              apple maps, map block, block
-Tested up to:      6.5
+Tested up to:      6.6
 Stable tag:        1.1.3
 License:           GPL-2.0-or-later
 License URI:       https://spdx.org/licenses/GPL-2.0-or-later.html