diff --git a/src/Rapid/Contract/Client.php b/src/Rapid/Contract/Client.php
index <HASH>..<HASH> 100644
--- a/src/Rapid/Contract/Client.php
+++ b/src/Rapid/Contract/Client.php
@@ -28,7 +28,7 @@ interface Client
     /**
      * Rapid SDK Version.
      */
-    const VERSION = '1.3.1';
+    const VERSION = '1.4.0';
 
     /**
      * Sandbox mode.
MUP-<I>: Increase SDK version to <I>