diff --git a/src/Configuration.php b/src/Configuration.php
index 4faf127..e7287d3 100644
--- a/src/Configuration.php
+++ b/src/Configuration.php
@@ -16,7 +16,7 @@
  */
 final class Configuration implements ConfigurationInterface
 {
-    public const LIBRARY_VERSION = 'v4.1.1';
+    public const LIBRARY_VERSION = 'v4.2.0';
     public const API_VERSION = '0.7';
     public const API_BASE_URL = 'api.uploadcare.com';
     public const USER_AGENT_TEMPLATE = 'PHPUploadcare/{lib-version}/{publicKey} (PHP/{lang-version})';