diff --git a/composer.json b/composer.json
index 3b9ebf1e..d00e12a2 100644
--- a/composer.json
+++ b/composer.json
@@ -35,6 +35,6 @@
       , "symfony/routing": "^2.6|^3.0|^4.0|^5.0|^6.0|^7.0"
     }
   , "require-dev": {
-        "phpunit/phpunit": "^9.6 || ^5.7 || ^4.8.36"
+        "phpunit/phpunit": "^9.6 || ^8.5 || ^5.7 || ^4.8.36"
     }
 }