diff --git a/composer.json b/composer.json
index 518000e..e13c2cf 100644
--- a/composer.json
+++ b/composer.json
@@ -38,7 +38,7 @@
         "react/child-process": "^0.6.5",
         "react/http": "^1.9",
         "roave/security-advisories": "dev-latest",
-        "vimeo/psalm": "^5.18.0"
+        "vimeo/psalm": "^6.0.0"
     },
     "conflict": {
         "symfony/options-resolver": "<5.3.7"