diff --git a/src/Core/CoreConstants.php b/src/Core/CoreConstants.php
index 1c668133..8fdef408 100644
--- a/src/Core/CoreConstants.php
+++ b/src/Core/CoreConstants.php
@@ -7,7 +7,7 @@
 class CoreConstants
 {
     //Set the default minor version to 23
-    const DEFAULT_SDK_MINOR_VERSION = "36";
+    const DEFAULT_SDK_MINOR_VERSION = "40";
     const DEFAULT_LOGGINGLOCATION = "/tmp/IdsLogs";
 
     const PHP_CLASS_PREFIX = 'IPP';
@@ -293,7 +293,7 @@ class CoreConstants
      * The Request source header value.
      * @var string REQUESTSOURCEHEADER
      */
-    const USERAGENT = "V3PHPSDK6.0.0";
+    const USERAGENT = "V3PHPSDK5.2.0";
 
     public static function getType($string, $return=1)
     {