diff --git a/README.md b/README.md
index 6f35b579..49577e1f 100755
--- a/README.md
+++ b/README.md
@@ -42,13 +42,13 @@ Add the Yoti SDK dependency:
 
 ```json
 "require": {
-    "yoti/yoti-php-sdk" : "^4.3.0"
+    "yoti/yoti-php-sdk" : "^4.3.1"
 }
 ```
 
 Or run this Composer command
 ```console
-$ composer require yoti/yoti-php-sdk "^4.3.0"
+$ composer require yoti/yoti-php-sdk "^4.3.1"
 ```
 
 ## Setup
diff --git a/src/Constants.php b/src/Constants.php
index b1cb4499..ac625f8f 100644
--- a/src/Constants.php
+++ b/src/Constants.php
@@ -31,7 +31,7 @@ class Constants
     public const SDK_IDENTIFIER = 'PHP';
 
     /** Default SDK version */
-    public const SDK_VERSION = '4.3.0';
+    public const SDK_VERSION = '4.3.1';
 
     /** Base url for connect page (user will be redirected to this page eg. baseurl/app-id) */
     public const CONNECT_BASE_URL = 'https://www.yoti.com/connect';