diff --git a/src/WebService/Client.php b/src/WebService/Client.php
index bb898623..43c1490a 100644
--- a/src/WebService/Client.php
+++ b/src/WebService/Client.php
@@ -48,7 +48,7 @@ class Client implements ProviderInterface
     private $client;
     private static $basePath = '/geoip/v2.1';
 
-    const VERSION = 'v2.3.0';
+    const VERSION = 'v2.3.1';
 
     /**
      * Constructor.