diff --git a/composer.json b/composer.json
index 5ff36fa..ec787f5 100755
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
         "ext-simplexml": "*",
         "composer/semver": "^1.4 || ^2.0 || ^3.0",
         "composer/package-versions-deprecated": "^1.10",
-        "vimeo/psalm": "dev-master || dev-4.x || ^4.5"
+        "vimeo/psalm": "dev-master || dev-4.x || ^4.5 || ^5@beta"
     },
     "conflict": {
         "phpunit/phpunit": "<7.5"