diff --git a/payment_server/v2/main/connect.php b/payment_server/v2/main/connect.php
index da020ff5..b6573e0f 100755
--- a/payment_server/v2/main/connect.php
+++ b/payment_server/v2/main/connect.php
@@ -27,7 +27,8 @@ $dbname = getenv('dbname');
 
 // --- Database Connection (Still needed for your application logic) ---
 try {
-    $dsn = "mysql:host=localhost;dbname=$dbname;charset=utf8mb4";
+    $dbHost = getenv('DB_PAYMENT_HOST') ?: (getenv('DB_HOST') ?: 'mysql');
+    $dsn = "mysql:host=$dbHost;dbname=$dbname;charset=utf8mb4";
     
     $options = [
         PDO::ATTR_EMULATE_PREPARES => false,