diff --git a/VERSION b/VERSION
index f2d2bcec2..e5ef00e64 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-28.3.0
+28.3.1
diff --git a/src/Adyen/Client.php b/src/Adyen/Client.php
index c5b1967bb..c53409863 100644
--- a/src/Adyen/Client.php
+++ b/src/Adyen/Client.php
@@ -7,7 +7,7 @@
 
 class Client
 {
-    const LIB_VERSION = "28.3.0";
+    const LIB_VERSION = "28.3.1";
     const LIB_NAME = "adyen-php-api-library";
     const USER_AGENT_SUFFIX = "adyen-php-api-library/";
     const ENDPOINT_TEST = "https://pal-test.adyen.com";