diff --git a/composer.json b/composer.json
index 75ccc875..44753c39 100644
--- a/composer.json
+++ b/composer.json
@@ -13,6 +13,6 @@
         "php": ">=5.3.0"
     },
     "require-dev":{
-     "phpunit/phpunit":"8.4.3"
+     "phpunit/phpunit":"8.5.14"
     }
 }