diff --git a/src/Appwrite/Auth/OAuth2/Etsy.php b/src/Appwrite/Auth/OAuth2/Etsy.php
index e89731752..43d4998f4 100644
--- a/src/Appwrite/Auth/OAuth2/Etsy.php
+++ b/src/Appwrite/Auth/OAuth2/Etsy.php
@@ -14,7 +14,7 @@ class Etsy extends OAuth2
     /**
      * @var string
      */
-    private $version = '2022-07-14';
+    private string $version = '2022-07-14';
 
     /**
      * @var array