diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3c1ae59..a0b3645 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 
 
+## [4.2.2] - 2019-11-05
+
+### Changed
+
+- Remove "src" folder from a PSR4 autoload definition as fallback directory.
+
+
 ## [4.2.1] - 2019-10-15
 
 ### Added
diff --git a/src/Klarna/Rest/Transport/UserAgent.php b/src/Klarna/Rest/Transport/UserAgent.php
index 3a4e7bf..fb52fb4 100644
--- a/src/Klarna/Rest/Transport/UserAgent.php
+++ b/src/Klarna/Rest/Transport/UserAgent.php
@@ -32,7 +32,7 @@ class UserAgent implements UserAgentInterface
     /**
      * Version of the SDK.
      */
-    const VERSION = '4.2.1';
+    const VERSION = '4.2.2';
 
     /**
      * Components of the user agent.