diff --git a/composer.json b/composer.json
old mode 100755
new mode 100644
index fa08410..ba59437
--- a/composer.json
+++ b/composer.json
@@ -28,7 +28,7 @@
     },
     "require-dev": {
         "squizlabs/php_codesniffer": "^3.4",
-        "symfony/var-dumper": "^4.2"
+        "symfony/var-dumper": "^4.2 || ^5.0"
     },
     "scripts": {
         "sniff": "phpcs --standard=PSR12 ./src",