diff --git a/CHANGELOG.md b/CHANGELOG.md
index fc2d330b..fa239866 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # CHANGELOG
 
+## v8.6.0 (2026-02-20)
+
+- Adds the following functions:
+  - `fedexRegistration.registerAddress`
+  - `fedexRegistration.requestPin`
+  - `fedexRegistration.validatePin`
+  - `fedexRegistration.submitInvoice`
+
 ## v8.5.0 (2026-02-03)
 
 - Adds the following functions usable by child and referral customer users (closes #375):
diff --git a/composer.json b/composer.json
index 20aef0a8..3b4fc193 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,7 @@
 {
   "name": "easypost/easypost-php",
   "description": "EasyPost Shipping API Client Library for PHP",
-  "version": "8.5.0",
+  "version": "8.6.0",
   "keywords": [
     "shipping",
     "api",
diff --git a/lib/EasyPost/Constant/Constants.php b/lib/EasyPost/Constant/Constants.php
index 750ab962..18b71e66 100644
--- a/lib/EasyPost/Constant/Constants.php
+++ b/lib/EasyPost/Constant/Constants.php
@@ -11,7 +11,7 @@ abstract class Constants
     const BETA_API_VERSION = 'beta';
 
     // Library constants
-    const LIBRARY_VERSION = '8.5.0';
+    const LIBRARY_VERSION = '8.6.0';
     const SUPPORT_EMAIL = 'support@easypost.com';
 
     // Validation
diff --git a/lib/easypost.php b/lib/easypost.php
index 52ea1bbc..90d15d52 100644
--- a/lib/easypost.php
+++ b/lib/easypost.php
@@ -4,7 +4,7 @@
 
 // Required PHP extensions
 if (!function_exists('json_decode')) {
-    throw new Exception('EasyPost needs the JSON PHP extension.');
+    throw new \Exception('EasyPost needs the JSON PHP extension.');
 }
 
 // Exception Base Classes
@@ -104,6 +104,7 @@
 require_once(dirname(__FILE__) . '/EasyPost/Service/EmbeddableService.php');
 require_once(dirname(__FILE__) . '/EasyPost/Service/EndShipperService.php');
 require_once(dirname(__FILE__) . '/EasyPost/Service/EventService.php');
+require_once(dirname(__FILE__) . '/EasyPost/Service/FedExRegistrationService.php');
 require_once(dirname(__FILE__) . '/EasyPost/Service/InsuranceService.php');
 require_once(dirname(__FILE__) . '/EasyPost/Service/OrderService.php');
 require_once(dirname(__FILE__) . '/EasyPost/Service/ParcelService.php');