diff --git a/composer.json b/composer.json
index fb51fec..2a0b541 100644
--- a/composer.json
+++ b/composer.json
@@ -15,7 +15,7 @@
     "php": "^7.1"
   },
   "require-dev": {
-    "phpunit/phpunit": "^6.5",
+    "phpunit/phpunit": "^7.3",
     "php-vfs/php-vfs": "^v1.3",
     "phpstan/phpstan": "^0.9"
   },
diff --git a/phpunit.xml b/phpunit.xml
index 5518de9..a1a595b 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -1,6 +1,6 @@
 <phpunit bootstrap="include/bootstrap.php">
     <testsuites>
-        <testsuite>
+        <testsuite name="diff-sniffer-core">
             <directory>tests</directory>
         </testsuite>
     </testsuites>