diff --git a/composer.json b/composer.json
index b4b1bca744..b52f3ee57d 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,7 @@
         "ext-ctype": "*"
     },
     "require-dev": {
-        "phpunit/phpunit": "^7.0 || ^8.0 || ^9.0",
+        "phpunit/phpunit": "^9.0",
         "ircmaxell/php-yacc": "^0.0.7"
     },
     "extra": {
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 5271264cbf..53bc091311 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -12,9 +12,9 @@
         </testsuite>
     </testsuites>
 
-    <filter>
-        <whitelist>
+    <coverage>
+        <include>
             <directory suffix=".php">./lib/PhpParser/</directory>
-        </whitelist>
-    </filter>
+        </include>
+    </coverage>
 </phpunit>