diff --git a/phpunit.xml b/phpunit.xml
index 75520cc..4a74eb6 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -5,8 +5,8 @@
         colors="true"
         beStrictAboutTestsThatDoNotTestAnything="true"
         beStrictAboutOutputDuringTests="true"
-        beStrictAboutTestSize="true"
         beStrictAboutChangesToGlobalState="true"
+        enforceTimeLimit="true"
 >
     <testsuite name="PHP-ML Test Suite">
         <directory>tests/*</directory>