diff --git a/.phpcs.xml b/.phpcs.xml
index cd43c9b..b8f0572 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="6.4" />
+  <config name="minimum_supported_wp_version" value="6.3" />
 
   <!-- Define the prefixes that can be used by the plugin -->
   <rule ref="WordPress.NamingConventions.PrefixAllGlobals">
diff --git a/README.md b/README.md
index 62ea389..7f2dd0f 100644
--- a/README.md
+++ b/README.md
@@ -12,8 +12,8 @@ A WordPress plugin to provide full page caching for 404 pages, improving perform
 ## Requirements
 - SSL enabled on the website.
 - An external object cache setup (e.g., Redis, Memcached).
-- Requires at least: 6.4
-- Tested up to: 6.5
+- Requires at least: 6.3
+- Tested up to: 6.4
 - Requires PHP: 8.1
 - License: GPL v2 or later
 
diff --git a/src/features/class-full-page-cache-404.php b/src/features/class-full-page-cache-404.php
index d45faaf..8af28ca 100644
--- a/src/features/class-full-page-cache-404.php
+++ b/src/features/class-full-page-cache-404.php
@@ -73,7 +73,7 @@ final class Full_Page_Cache_404 implements Feature {
 	 * @return int
 	 */
 	public static function get_cache_time(): int {
-		return apply_filters( 'wp_404_caching_cache_time', self::DEFAULT_CACHE_TIME );
+		return apply_filters( 'wp_404_caching_cache_time', self::DEFAULT_CACHE_TIME ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedHooknameFound
 	}
 
 	/**
@@ -82,7 +82,7 @@ public static function get_cache_time(): int {
 	 * @return int
 	 */
 	public static function get_stale_cache_time(): int {
-		return apply_filters( 'wp_404_caching_stale_cache_time', self::DEFAULT_STALE_CACHE_TIME );
+		return apply_filters( 'wp_404_caching_stale_cache_time', self::DEFAULT_STALE_CACHE_TIME ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedHooknameFound
 	}
 
 	/**
diff --git a/wp-404-caching.php b/wp-404-caching.php
index 24b3ee9..a0b3940 100644
--- a/wp-404-caching.php
+++ b/wp-404-caching.php
@@ -6,8 +6,8 @@
  * Version: 1.0.1
  * Author: Alley
  * Author URI: https://github.com/alleyinteractive/wp-404-caching
- * Requires at least: 6.4
- * Tested up to: 6.5
+ * Requires at least: 6.3
+ * Tested up to: 6.4
  *
  * Text Domain: wp-404-caching
  * Domain Path: /languages/