diff --git a/src/lib/Key.php b/src/lib/Key.php
index cc74115..7e588ee 100644
--- a/src/lib/Key.php
+++ b/src/lib/Key.php
@@ -19,7 +19,7 @@
 use Dotenv\Dotenv;
 
 define('NAGAD_ABSPATH', __DIR__ . '/../../../../../');
-$dotenv = Dotenv::create(NAGAD_ABSPATH);
+$dotenv = Dotenv::createImmutable(NAGAD_ABSPATH);
 $dotenv->load();