diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0ea3605..86ef1ca 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [4.0.3] - 2020-12-17
+### Fixed
+- Fixed overwriting tax rules in shopping cart when tax rates are too close in range
+- Fixed TypeError when quantity in Weight is not a float
+
 ## [4.0.2] - 2020-11-24
 ### Fixed
 - Fixed PHP rounding issues when casting amount to int
diff --git a/composer.json b/composer.json
index 3d19700..185df0a 100644
--- a/composer.json
+++ b/composer.json
@@ -3,7 +3,7 @@
   "description": "MultiSafepay PHP SDK",
   "type": "library",
   "license": "MIT",
-  "version": "4.0.2",
+  "version": "4.0.3",
   "require": {
     "php": "^7.1",
     "ext-json": "*",
diff --git a/src/Util/Version.php b/src/Util/Version.php
index f8c5521..3a63bb1 100644
--- a/src/Util/Version.php
+++ b/src/Util/Version.php
@@ -17,7 +17,7 @@
  */
 class Version
 {
-    const SDK_VERSION = '4.0.2';
+    const SDK_VERSION = '4.0.3';
 
     /**
      * @var Version