diff --git a/tests/Gaufrette/Functional/Adapter/AzureBlobStorageTest.php b/tests/Gaufrette/Functional/Adapter/AzureBlobStorageTest.php
index 88fda430..d21c01ed 100644
--- a/tests/Gaufrette/Functional/Adapter/AzureBlobStorageTest.php
+++ b/tests/Gaufrette/Functional/Adapter/AzureBlobStorageTest.php
@@ -12,11 +12,10 @@
  */
 class AzureBlobStorageTest extends FunctionalTestCase
 {
-    /** @var string Name of the Azure container used */
-    private $container;
+    /** Name of the Azure container used */
+    private string $container;
 
-    /** @var AzureBlobStorage */
-    private $adapter;
+    private AzureBlobStorage $adapter;
 
     protected function setUp(): void
     {