diff --git a/phpunit.xml b/phpunit.xml
index c29a86d..e93e798 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -27,9 +27,9 @@
         </whitelist>
     </filter>
     <php>
-        <env name="APP_ENV" value="testing"/>
-        <env name="CACHE_DRIVER" value="array"/>
-        <env name="SESSION_DRIVER" value="array"/>
-        <env name="QUEUE_DRIVER" value="sync"/>
+        <env name="APP_ENV" value="testing" force="true"/>
+        <env name="CACHE_DRIVER" value="array" force="true"/>
+        <env name="SESSION_DRIVER" value="array" force="true"/>
+        <env name="QUEUE_DRIVER" value="sync" force="true"/>
     </php>
 </phpunit>