diff --git a/readme.txt b/readme.txt
index 74d20fe..603c60f 100644
--- a/readme.txt
+++ b/readme.txt
@@ -2,7 +2,7 @@
 Contributors: wildworks
 Tags: gutenberg,rich text,highlighter,formatting
 Donate link: https://www.paypal.me/thamanoJP
-Requires at least: 6.4
+Requires at least: 6.5
 Tested up to: 6.6
 Stable tag: 2.6.1
 Requires PHP: 7.4
diff --git a/richtext-extension.php b/richtext-extension.php
index 9b096a6..186fb96 100644
--- a/richtext-extension.php
+++ b/richtext-extension.php
@@ -2,7 +2,7 @@
 /**
  * Plugin Name: RichText Extension
  * Description: Adds useful decoration features to the Gutenberg RichText editor toolbar.
- * Requires at least: 6.4
+ * Requires at least: 6.5
  * Requires PHP: 7.4
  * Version: 2.6.1
  * Author: Aki Hamano