diff --git a/CHANGELOG.md b/CHANGELOG.md
index 25b787c3..fc89448a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,7 +5,15 @@ 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/13.0.1...HEAD)
+## [Unreleased](https://github.com/HubSpot/hubspot-api-php/compare/13.1.0...HEAD)
+
+## [13.1.0](https://github.com/HubSpot/hubspot-api-php/releases/tag/13.1.0) - 2025-11-13
+
+### Updates
+
+- Added `ObjectTypeIDs` enum.
+- Updated `AssociationTypes` enum.
+- Updated `crm()->obects()` API client.
 
 ## [13.0.1](https://github.com/HubSpot/hubspot-api-php/releases/tag/13.0.1) - 2025-05-13
 
@@ -982,7 +990,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   25. getSubscriptions => getAll (webhooks()->subscriptionsApi())
   26. updateSubscription => update (webhooks()->subscriptionsApi())
 
-[Unreleased]: https://github.com/HubSpot/hubspot-api-php/compare/13.0.1...HEAD
+[Unreleased]: https://github.com/HubSpot/hubspot-api-php/compare/13.1.0...HEAD
 [1.0.0-beta]: https://github.com/HubSpot/hubspot-api-php/releases/tag/v1.0.0-beta
 [1.1.0]: https://github.com/HubSpot/hubspot-api-php/releases/tag/1.1.0
 [1.2.0]: https://github.com/HubSpot/hubspot-api-php/releases/tag/1.2.0
@@ -1045,3 +1053,4 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 [13.0.0beta.1]: https://github.com/HubSpot/hubspot-api-php/releases/tag/13.0.0beta.1
 [13.0.0]: https://github.com/HubSpot/hubspot-api-php/releases/tag/13.0.0
 [13.0.1]: https://github.com/HubSpot/hubspot-api-php/releases/tag/13.0.1
+[13.1.10]: https://github.com/HubSpot/hubspot-api-php/releases/tag/13.1.0
diff --git a/composer.json b/composer.json
index 771323e9..3d69e992 100644
--- a/composer.json
+++ b/composer.json
@@ -1,6 +1,6 @@
 {
     "name": "hubspot/api-client",
-    "version": "13.0.1",
+    "version": "13.1.0",
     "description": "Hubspot API client",
     "keywords": [
         "hubspot",
@@ -32,8 +32,8 @@
     },
     "autoload": {
         "psr-4": {
-            "HubSpot\\Client\\" : "codegen/",
-            "HubSpot\\" : "lib/",
+            "HubSpot\\Client\\": "codegen/",
+            "HubSpot\\": "lib/",
             "Hubspot\\Tests\\": "tests/"
         }
     }