diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4510255d..2f8e0dae 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,7 +5,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased](https://github.com/HubSpot/hubspot-api-php/compare/8.3.0...HEAD)
+## [Unreleased](https://github.com/HubSpot/hubspot-api-php/compare/8.3.1...HEAD)
+
+## [8.3.1](https://github.com/HubSpot/hubspot-api-php/releases/tag/8.3.1) - 2022-09-01
+
+ ### Fixed
+
+- adapt OAuth Util for php 8.1
 
 ## [8.3.0](https://github.com/HubSpot/hubspot-api-php/releases/tag/8.3.0) - 2022-07-15
 
diff --git a/composer.json b/composer.json
index 8ba5a430..892f92f5 100644
--- a/composer.json
+++ b/composer.json
@@ -1,6 +1,6 @@
 {
     "name": "hubspot/api-client",
-    "version": "8.3.0",
+    "version": "8.3.1",
     "description": "Hubspot API client",
     "keywords": [
         "hubspot",