diff --git a/README.md b/README.md
index 3f4d777..e3cf59d 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # Chess.php
 
 This project is a fork of [ryanhs/chess.php](https://github.com/ryanhs/chess.php), which is abandonned. chess.php itself was a port of [chess.js](https://github.com/jhlywa/chess.js). Main changes compared to the original ryanhs project are:
-- It is compatible with PHP 7.4/8.0.
+- It is compatible with PHP 7.4/8.0/8.1.
 - PHP Unit has been updated to version 9
 - The documentation has been imported right in the project