diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 89bbb02..367feb0 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -3,6 +3,7 @@
          backupStaticAttributes="false"
          bootstrap="vendor/autoload.php"
          colors="true"
+         convertDeprecationsToExceptions="true"
          convertErrorsToExceptions="true"
          convertNoticesToExceptions="true"
          convertWarningsToExceptions="true"