diff --git a/composer.json b/composer.json
index 57a8dc6..9b5adc8 100644
--- a/composer.json
+++ b/composer.json
@@ -23,7 +23,7 @@
         "laminas/laminas-serializer": "^3.0",
         "phpunit/phpunit": "^10.5.35",
         "psalm/plugin-phpunit": "^0.19.0",
-        "vimeo/psalm": "^5.18"
+        "vimeo/psalm": "^6.0"
     },
     "config": {
         "sort-packages": true,