diff --git a/composer.json b/composer.json
index e971c42..e1a20a5 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
     },
     "require-dev": {
         "phpunit/phpunit":      "8.5.5",
-        "symfony/var-dumper":   "^4.1"
+        "symfony/var-dumper":   "^4.1 || ^5.0"
     },
     "autoload":    {
         "psr-4": {