diff --git a/src/Database/Concerns/ConvertsDomainsToLowercase.php b/src/Database/Concerns/ConvertsDomainsToLowercase.php
index fc15cb2c..e3f0c6ac 100644
--- a/src/Database/Concerns/ConvertsDomainsToLowercase.php
+++ b/src/Database/Concerns/ConvertsDomainsToLowercase.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Stancl\Tenancy\Database\Concerns;
 
 trait ConvertsDomainsToLowercase
@@ -10,4 +12,4 @@ trait ConvertsDomainsToLowercase
             $model->domain = strtolower($model->domain);
         });
     }
-}
\ No newline at end of file
+}