diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 4e3f6be..6cd8787 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -11,4 +11,7 @@
             <directory>./src</directory>
         </whitelist>
     </filter>
+    <php>
+        <ini name="memory_limit" value="256M"/>
+    </php>
 </phpunit>