diff --git a/composer.json b/composer.json
index 24126ea..cc5b8a9 100644
--- a/composer.json
+++ b/composer.json
@@ -13,7 +13,7 @@
   "require-dev": {
     "phpunit/phpunit": "^9.3",
     "php-coveralls/php-coveralls": "^2.2",
-    "psalm/phar": "5.21.1"
+    "psalm/phar": "6.6.1"
   },
   "autoload": {
     "psr-4": {