diff --git a/readme.txt b/readme.txt
index 6301c193a..85e08e4bd 100644
--- a/readme.txt
+++ b/readme.txt
@@ -3,7 +3,7 @@ Contributors: 		yoast, lopo
 Donate link: 		https://yoast.com/wordpress/plugins/duplicate-post/
 Tags: 				duplicate post, copy, clone
 Requires at least: 	6.2
-Tested up to: 		6.3
+Tested up to: 		6.4
 Stable tag: 		4.5
 Requires PHP:		7.2.5
 License: 			GPLv2 or later