diff --git a/src/Contracts/Future/CanDeleteKeys.php b/src/Contracts/Future/CanDeleteKeys.php
index 990ed34e..25f2f5f6 100644
--- a/src/Contracts/Future/CanDeleteKeys.php
+++ b/src/Contracts/Future/CanDeleteKeys.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Stancl\Tenancy\Contracts\Future;
 
 use Stancl\Tenancy\Tenant;
@@ -16,4 +18,4 @@ interface CanDeleteKeys
      * @return void
      */
     public function deleteMany(array $keys, Tenant $tenant = null): void;
-}
\ No newline at end of file
+}
diff --git a/src/Tenant.php b/src/Tenant.php
index 0c18fc0b..253438eb 100644
--- a/src/Tenant.php
+++ b/src/Tenant.php
@@ -365,12 +365,12 @@ class Tenant implements ArrayAccess
 
         if (! $this->storage instanceof CanDeleteKeys) {
             throw new NotImplementedException(get_class($this->storage), 'deleteMany',
-                'This method was added to storage drivers provided by the package in 2.2.0 and will be part of the StorageDriver contract in 3.0.0.'    
+                'This method was added to storage drivers provided by the package in 2.2.0 and will be part of the StorageDriver contract in 3.0.0.'
             );
         } else {
             $this->storage->deleteMany($keys);
         }
-        
+
         return $this;
     }