Update composer.json

AndrewCarterUK · web-flow · commit 72d9c6e7d36b · 2018-03-01T11:14:46.000Z
diff --git a/composer.json b/composer.json
@@ -18,6 +18,7 @@
         "symfony/console": "~2.5|~3.0"
     },
     "require-dev": {
+        "phpunit/phpunit": "~5.0",
         "satooshi/php-coveralls": "~1.0"
     },
     "autoload": {
