diff --git a/composer.json b/composer.json
index 6679260..d14fc80 100644
--- a/composer.json
+++ b/composer.json
@@ -12,8 +12,7 @@
         "symfony/process": "~2.0|~3.0"
     },
     "require-dev": {
-        "symfony/phpunit-bridge": "^3.0",
-        "phpunit/phpunit": "^4.8"
+        "symfony/phpunit-bridge": "^3.0"
     },
     "config": {
         "platform": {