diff --git a/CHANGELOG.md b/CHANGELOG.md
index e05343c..a397fca 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,11 @@ 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]
+### Fixed
+- Exclude `vendor/` from the PHPCS ruleset so PHPCompatibility no longer reports issues in third-party dependencies (`nikic/php-parser`, `hamcrest/hamcrest-php`) on PHP 8.2+
+- Switch `testVersion` in the PHPCS ruleset from exact `7.4` to open range `7.4-` so the standard targets the minimum supported PHP and above
+
 ## [1.1.1](https://github.com/10up/wp_mock/compare/1.1.0...1.1.1) - 2025-12-03
 ### Fixed
 - Address PHP deprecation warnings about implicitly nullable parameters
diff --git a/phpcs.xml b/phpcs.xml
index e18853e..6087a32 100644
--- a/phpcs.xml
+++ b/phpcs.xml
@@ -1,8 +1,10 @@
 <?xml version="1.0"?>
 <ruleset name="Custom ruleset">
+	<description>WP_Mock PHPCS ruleset. Scans project source only; vendor/ is excluded so third-party code is never reported.</description>
 	<file>./php</file>
 	<file>./tests</file>
+	<exclude-pattern>*/vendor/*</exclude-pattern>
 	<arg value="sp"/>
 	<rule ref="PHPCompatibility"/>
-	<config name="testVersion" value="7.4"/>
-</ruleset>
\ No newline at end of file
+	<config name="testVersion" value="7.4-"/>
+</ruleset>