diff --git a/phpunit.xml b/phpunit.xml
index d9b2e4a1cf3e..1c27f29b2b43 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" backupGlobals="false"
-  bootstrap="vendor/autoload.php" colors="true" processIsolation="false" stopOnError="true" stopOnFailure="true" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.3/phpunit.xsd"
+  bootstrap="vendor/autoload.php" colors="true" processIsolation="true" stopOnError="true" stopOnFailure="true" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.3/phpunit.xsd"
   cacheDirectory=".phpunit.cache" backupStaticProperties="false">
   <testsuites>
     <testsuite name="Unit">