diff --git a/composer.json b/composer.json
index 7e701e50..bc78b470 100644
--- a/composer.json
+++ b/composer.json
@@ -45,7 +45,7 @@
         "phpunit/php-code-coverage": "^9.1.10",
         "friendsofphp/php-cs-fixer": "^3.51.0",
         "phpstan/phpstan": "1.10.14",
-        "vimeo/psalm": "5.9.0"
+        "vimeo/psalm": "5.23.1"
     },
     "scripts": {
         "test": "cd tests && php run.php",