diff --git a/composer.json b/composer.json
index d2d2e2b..dafc770 100644
--- a/composer.json
+++ b/composer.json
@@ -14,7 +14,7 @@
         "silverstripe/cms": "^4.0"
     },
     "require-dev": {
-        "phpunit/PHPUnit": "^5.7",
+        "phpunit/phpunit": "^5.7",
         "squizlabs/php_codesniffer": "^3.0"
     },
     "suggest": {
@@ -30,10 +30,7 @@
         "expose": [
             "css",
             "javascript"
-        ],
-        "branch-alias": {
-            "dev-master": "2.x-dev"
-        }
+        ]
     },
     "minimum-stability": "dev",
     "prefer-stable": true