diff --git a/src/Client.php b/src/Client.php
index b9a90af..9f595f8 100644
--- a/src/Client.php
+++ b/src/Client.php
@@ -69,7 +69,7 @@ class Client
      *
      * @var string
      */
-    private const USER_AGENT = 'digitalocean-php-api-client/5.0';
+    private const USER_AGENT = 'digitalocean-php-api-client/5.1';
 
     private readonly Builder $httpClientBuilder;
     private readonly History $responseHistory;