diff --git a/composer.json b/composer.json
index be2dea4..1dc1051 100644
--- a/composer.json
+++ b/composer.json
@@ -26,7 +26,7 @@
         "roave/infection-static-analysis-plugin": "^1.32",
         "squizlabs/php_codesniffer": "^3.4",
         "symfony/var-dumper": "^5.0",
-        "vimeo/psalm": "^4.0.0"
+        "vimeo/psalm": "^4.0.0 || ^5.0.0"
     },
     "autoload": {
         "psr-4": {