diff --git a/composer.json b/composer.json
index fd142965f..3fa4a6ec0 100644
--- a/composer.json
+++ b/composer.json
@@ -146,7 +146,7 @@
         "jcalderonzumba/mink-phantomjs-driver": "~0.3",
         "mikey179/vfsStream": "^1.6",
         "phing/phing": "^2.16",
-        "phpunit/phpunit": "^4.8.35 || ^6.1",
+        "phpunit/phpunit": "^7.0.2",
         "se/selenium-server-standalone": "^3.6",
         "squizlabs/php_codesniffer": "^2.9"
     },