diff --git a/php/composer.json b/php/composer.json
index 51cc08852..565f4e0ea 100644
--- a/php/composer.json
+++ b/php/composer.json
@@ -19,7 +19,7 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^10.5||^11.0",
-        "vimeo/psalm": "5.26.1",
+        "vimeo/psalm": "6.5.0",
         "friendsofphp/php-cs-fixer": "^3.51",
         "psalm/plugin-phpunit": "^0.19.0"
     },