diff --git a/system/templateEngines/Dwoo/dwoo/dwoo/composer.json b/system/templateEngines/Dwoo/dwoo/dwoo/composer.json
index 466ad41..068e856 100644
--- a/system/templateEngines/Dwoo/dwoo/dwoo/composer.json
+++ b/system/templateEngines/Dwoo/dwoo/dwoo/composer.json
@@ -23,6 +23,6 @@
         "php": "^5.3|^7.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "4.8.27"
+        "phpunit/phpunit": "4.8.28"
     }
 }