diff --git a/composer.json b/composer.json
index 3f87909..ccd8a39 100644
--- a/composer.json
+++ b/composer.json
@@ -16,7 +16,7 @@
     },
     "require-dev": {
         "phpstan/phpstan": "^1.9",
-        "vimeo/psalm": "^5.24"
+        "vimeo/psalm": "^6.1"
     },
     "suggest": {
         "ext-gd": "For running image converter"