diff --git a/composer.json b/composer.json
index d128858c..9a3f40fd 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,7 @@
     "require": {
         "php": "^7.1",
         "psr/log": "^1.0",
-        "symfony/var-dumper": "^2.6|^3|^4"
+        "symfony/var-dumper": "^2.6|^3|^4|^5"
     },
     "require-dev": {
         "phpunit/phpunit": "^5"