diff --git a/composer.json b/composer.json
index 15c2244..1ef4fcf 100644
--- a/composer.json
+++ b/composer.json
@@ -10,6 +10,11 @@
     "require-dev": {
         "wp-coding-standards/wpcs": "^2",
         "phpunit/phpunit": "^8",
-        "10up/wp_mock": "^0.4"
+        "10up/wp_mock": "^0.4",
+        "phpcompatibility/php-compatibility": "^9.3",
+        "dealerdirect/phpcodesniffer-composer-installer": "^0.7.1"
+    },
+    "scripts": {
+        "lint:php": "@php ./vendor/bin/phpcs -s"
     }
 }
diff --git a/composer.lock b/composer.lock
index d8a7599..791c467 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "dac3df251d687a478db972eda4d6d51a",
+    "content-hash": "01b8759acf189fe4bde8c02a661eec75",
     "packages": [],
     "packages-dev": [
         {
@@ -92,6 +92,72 @@
             ],
             "time": "2019-12-22T17:52:09+00:00"
         },
+        {
+            "name": "dealerdirect/phpcodesniffer-composer-installer",
+            "version": "v0.7.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/Dealerdirect/phpcodesniffer-composer-installer.git",
+                "reference": "fe390591e0241955f22eb9ba327d137e501c771c"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/Dealerdirect/phpcodesniffer-composer-installer/zipball/fe390591e0241955f22eb9ba327d137e501c771c",
+                "reference": "fe390591e0241955f22eb9ba327d137e501c771c",
+                "shasum": ""
+            },
+            "require": {
+                "composer-plugin-api": "^1.0 || ^2.0",
+                "php": ">=5.3",
+                "squizlabs/php_codesniffer": "^2.0 || ^3.0 || ^4.0"
+            },
+            "require-dev": {
+                "composer/composer": "*",
+                "phpcompatibility/php-compatibility": "^9.0",
+                "sensiolabs/security-checker": "^4.1.0"
+            },
+            "type": "composer-plugin",
+            "extra": {
+                "class": "Dealerdirect\\Composer\\Plugin\\Installers\\PHPCodeSniffer\\Plugin"
+            },
+            "autoload": {
+                "psr-4": {
+                    "Dealerdirect\\Composer\\Plugin\\Installers\\PHPCodeSniffer\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Franck Nijhof",
+                    "email": "franck.nijhof@dealerdirect.com",
+                    "homepage": "http://www.frenck.nl",
+                    "role": "Developer / IT Manager"
+                }
+            ],
+            "description": "PHP_CodeSniffer Standards Composer Installer Plugin",
+            "homepage": "http://www.dealerdirect.com",
+            "keywords": [
+                "PHPCodeSniffer",
+                "PHP_CodeSniffer",
+                "code quality",
+                "codesniffer",
+                "composer",
+                "installer",
+                "phpcs",
+                "plugin",
+                "qa",
+                "quality",
+                "standard",
+                "standards",
+                "style guide",
+                "stylecheck",
+                "tests"
+            ],
+            "time": "2020-12-07T18:04:37+00:00"
+        },
         {
             "name": "doctrine/instantiator",
             "version": "1.3.0",
@@ -411,6 +477,64 @@
             "description": "Library for handling version information and constraints",
             "time": "2018-07-08T19:19:57+00:00"
         },
+        {
+            "name": "phpcompatibility/php-compatibility",
+            "version": "9.3.5",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/PHPCompatibility/PHPCompatibility.git",
+                "reference": "9fb324479acf6f39452e0655d2429cc0d3914243"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/PHPCompatibility/PHPCompatibility/zipball/9fb324479acf6f39452e0655d2429cc0d3914243",
+                "reference": "9fb324479acf6f39452e0655d2429cc0d3914243",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3",
+                "squizlabs/php_codesniffer": "^2.3 || ^3.0.2"
+            },
+            "conflict": {
+                "squizlabs/php_codesniffer": "2.6.2"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "~4.5 || ^5.0 || ^6.0 || ^7.0"
+            },
+            "suggest": {
+                "dealerdirect/phpcodesniffer-composer-installer": "^0.5 || This Composer plugin will sort out the PHPCS 'installed_paths' automatically.",
+                "roave/security-advisories": "dev-master || Helps prevent installing dependencies with known security issues."
+            },
+            "type": "phpcodesniffer-standard",
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "LGPL-3.0-or-later"
+            ],
+            "authors": [
+                {
+                    "name": "Wim Godden",
+                    "homepage": "https://github.com/wimg",
+                    "role": "lead"
+                },
+                {
+                    "name": "Juliette Reinders Folmer",
+                    "homepage": "https://github.com/jrfnl",
+                    "role": "lead"
+                },
+                {
+                    "name": "Contributors",
+                    "homepage": "https://github.com/PHPCompatibility/PHPCompatibility/graphs/contributors"
+                }
+            ],
+            "description": "A set of sniffs for PHP_CodeSniffer that checks for PHP cross-version compatibility.",
+            "homepage": "http://techblog.wimgodden.be/tag/codesniffer/",
+            "keywords": [
+                "compatibility",
+                "phpcs",
+                "standards"
+            ],
+            "time": "2019-12-27T09:44:58+00:00"
+        },
         {
             "name": "phpdocumentor/reflection-common",
             "version": "2.0.0",
@@ -875,6 +999,7 @@
             "keywords": [
                 "tokenizer"
             ],
+            "abandoned": true,
             "time": "2019-09-17T06:23:10+00:00"
         },
         {
@@ -1729,12 +1854,12 @@
             "version": "1.7.0",
             "source": {
                 "type": "git",
-                "url": "https://github.com/webmozart/assert.git",
+                "url": "https://github.com/webmozarts/assert.git",
                 "reference": "aed98a490f9a8f78468232db345ab9cf606cf598"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/webmozart/assert/zipball/aed98a490f9a8f78468232db345ab9cf606cf598",
+                "url": "https://api.github.com/repos/webmozarts/assert/zipball/aed98a490f9a8f78468232db345ab9cf606cf598",
                 "reference": "aed98a490f9a8f78468232db345ab9cf606cf598",
                 "shasum": ""
             },
@@ -1826,5 +1951,6 @@
     "platform": {
         "php": ">=5.3"
     },
-    "platform-dev": []
+    "platform-dev": [],
+    "plugin-api-version": "1.1.0"
 }
diff --git a/phpcs.xml b/phpcs.xml
index 78c2892..bab4cc6 100644
--- a/phpcs.xml
+++ b/phpcs.xml
@@ -8,10 +8,12 @@
 		<exclude name="WordPress.Files.FileName.InvalidClassFileName" />
 	</rule>
 
-	<file>./includes</file>
+	<rule ref="PHPCompatibility"/>
+	<config name="testVersion" value="5.3-7.4"/>
+	<arg name="extensions" value="php"/>
+
+	<file>./src</file>
 	<file>./wp-strava.php</file>
 
 	<exclude-pattern>*/vendor/*</exclude-pattern>
-
-	<config name="installed_paths" value="../../../vendor/wp-coding-standards/wpcs/" />
 </ruleset>