diff --git a/.phpcs.xml b/.phpcs.xml
index 3e6848f7..e60c8046 100644
--- a/.phpcs.xml
+++ b/.phpcs.xml
@@ -30,7 +30,7 @@
   <exclude-pattern>vendor/</exclude-pattern>
 
   <!-- The version set here matches the minimum version tested in buddy.yml. -->
-  <config name="minimum_supported_wp_version" value="5.9" />
+  <config name="minimum_supported_wp_version" value="6.4" />
 
   <!-- Define the prefixes that can be used by the plugin -->
   <rule ref="WordPress.NamingConventions.PrefixAllGlobals">
diff --git a/README.md b/README.md
index fb81233e..a1e4d151 100644
--- a/README.md
+++ b/README.md
@@ -6,9 +6,9 @@ Tags: alleyinteractive, wp-404-caching
 
 Stable tag: 0.0.0
 
-Requires at least: 5.9
+Requires at least: 6.4
 
-Tested up to: 6.1
+Tested up to: 6.5
 
 Requires PHP: 8.1
 
diff --git a/wp-404-caching.php b/wp-404-caching.php
index 107a5f8a..7660df0c 100644
--- a/wp-404-caching.php
+++ b/wp-404-caching.php
@@ -6,8 +6,8 @@
  * Version: 0.0.0
  * Author: Alley
  * Author URI: https://github.com/alleyinteractive/wp-404-caching
- * Requires at least: 5.9
- * Tested up to: 6.2
+ * Requires at least: 6.4
+ * Tested up to: 6.5
  *
  * Text Domain: wp-404-caching
  * Domain Path: /languages/