diff --git a/CHANGELOG.md b/CHANGELOG.md
index ba9a175c..3279e0ca 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,8 @@
 # CHANGELOG
 
-## Next Release
+## v8.0.0 (2025-04-28)
+
+See our [Upgrade Guide](UPGRADE_GUIDE.md#upgrading-from-7x-to-80) for more details.
 
 - Drops support for PHP 8.0
 - Adds `custom_headers` property to webhook model
@@ -19,7 +21,7 @@
   - Corrects the `param` references to `property` references on all error models
   - Adds new `AddressVerificationFieldError` for the `errors` property on a `Verification` model
   - Adds missing `suggestion` property to `FieldError`
-- Removes deprecated `createList` tracker endpoint function as it is no longer available via API
+- Removes deprecated `tracker.createList` endpoint function as it is no longer available via API
 - Removes deprecated `user.allApiKeys` and `user.apiKeys`, use `apiKey.all` and `apiKey.retrieveApiKeysForUser` respectively
 - Bump deps
 
@@ -52,7 +54,7 @@
 
 ## v7.0.0 (2023-12-01)
 
-Upgrading major versions of this project? Refer to the [Upgrade Guide](UPGRADE_GUIDE.md).
+See our [Upgrade Guide](UPGRADE_GUIDE.md#upgrading-from-6x-to-70) for more details.
 
 - Drops support for PHP 7.4
 - Adds support for PHP 8.3
@@ -127,7 +129,7 @@ Upgrading major versions of this project? Refer to the [Upgrade Guide](UPGRADE_G
 
 ## v6.0.0 (2023-01-05)
 
-Upgrading major versions of this project? Refer to the [Upgrade Guide](UPGRADE_GUIDE.md).
+See our [Upgrade Guide](UPGRADE_GUIDE.md#upgrading-from-5x-to-60) for more details.
 
 - Release final version of v6 that contains all the changes in the `v6.0.0-rc1` below
 
@@ -224,7 +226,7 @@ Upgrading major versions of this project? Refer to the [Upgrade Guide](UPGRADE_G
 
 ## v5.0.0 (2022-02-09)
 
-Upgrading major versions of this project? Refer to the [Upgrade Guide](UPGRADE_GUIDE.md).
+See our [Upgrade Guide](UPGRADE_GUIDE.md#upgrading-from-4x-to-50) for more details.
 
 - Bumped minimum PHP version supported from `5.3` to `7.3`
 - Adds a full test suite, all functions are now tested for each object
@@ -252,7 +254,7 @@ Upgrading major versions of this project? Refer to the [Upgrade Guide](UPGRADE_G
 
 ## v4.0.0 (2021-10-06)
 
-Upgrading major versions of this project? Refer to the [Upgrade Guide](UPGRADE_GUIDE.md).
+See our [Upgrade Guide](UPGRADE_GUIDE.md#upgrading-from-3x-to-40) for more details.
 
 - JSON encodes POST bodies instead of form encoding them
 - Adds TaxIdentifier support
diff --git a/UPGRADE_GUIDE.md b/UPGRADE_GUIDE.md
index 493aad0d..6625fc91 100644
--- a/UPGRADE_GUIDE.md
+++ b/UPGRADE_GUIDE.md
@@ -2,13 +2,49 @@
 
 Use the following guide to assist in the upgrade process of the `easypost-php` library between major versions.
 
+- [Upgrading from 7.x to 8.0](#upgrading-from-7x-to-80)
 - [Upgrading from 6.x to 7.0](#upgrading-from-6x-to-70)
 - [Upgrading from 5.x to 6.0](#upgrading-from-5x-to-60)
 - [Upgrading from 4.x to 5.0](#upgrading-from-4x-to-50)
 - [Upgrading from 3.x to 4.0](#upgrading-from-3x-to-40)
 
+## Upgrading from 7.x to 8.0
+
+### 8.0 High Impact Changes
+
+- [Drop Support for PHP 8.0](#80-drop-support-for-php-80)
+- [Error Parsing](#80-error-parsing)
+
+### 8.0 Medium Impact Changes
+
+- [Deprecations](#80-deprecations)
+
+### 8.0 Drop Support for PHP 8.0
+
+*Likelihood of Impact: **High***
+
+This library now requires PHP 8.1 or greater.
+
+## 8.0 Error Parsing
+
+*Likelihood of Impact: **High***
+
+The `errors` key of an error response can return either a list of `FieldError` objects or a list of strings. The error parsing has been expanded to include both formats. As such, you will now need to check for the format of the `errors` field and handle the errors appropriately for the type that is returned.
+
+## 8.0 Deprecations
+
+*Likelihood of Impact: **Medium***
+
+The following deprecated functions have been removed:
+
+- `tracker.createList` (trackers must be created individually moving forward)
+- `user.allApiKeys` (use `apiKey.all`)
+- `user.apiKeys` (use `apiKey.retrieveApiKeysForUser`)
+
 ## Upgrading from 6.x to 7.0
 
+**NOTICE:** v7 is deprecated.
+
 ### 7.0 High Impact Changes
 
 - [Drop Support for PHP 7.4](#70-drop-support-for-php-74)
diff --git a/composer.json b/composer.json
index 1a02add0..b23829e5 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,7 @@
 {
   "name": "easypost/easypost-php",
   "description": "EasyPost Shipping API Client Library for PHP",
-  "version": "7.4.2",
+  "version": "8.0.0",
   "keywords": [
     "shipping",
     "api",
diff --git a/lib/EasyPost/Constant/Constants.php b/lib/EasyPost/Constant/Constants.php
index 67b39dd0..231e60e2 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 = '7.4.2';
+    const LIBRARY_VERSION = '8.0.0';
     const SUPPORT_EMAIL = 'support@easypost.com';
 
     // Validation