diff --git a/.gitignore b/.gitignore
index 073e37a..b6bd0e7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 build
 composer.lock
 vendor
+.phpunit.result.cache
diff --git a/.travis.yml b/.travis.yml
index 905a3eb..b4c3966 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,15 +6,13 @@ env:
     - RUN_TESTS=1
 
 php:
-  - 5.6
-  - 7.0
-  - hhvm
+  - 7.3
 
 sudo: false
 
 matrix:
   include:
-    - php: 5.6
+    - php: 7.2
       env: PHPCS=1 RUN_TESTS=0
 
 before_script:
@@ -23,7 +21,7 @@ before_script:
 
 script:
   - sh -c "if [ '$RUN_TESTS' = '1' ]; then vendor/bin/phpunit --coverage-text --coverage-clover=coverage.clover; fi"
-  - sh -c "if [ '$PHPCS' = '1' ]; then vendor/bin/phpcs -p -n --extensions=php --standard=psr2 ./src ./tests; fi"
+  - sh -c "if [ '$PHPCS' = '1' ]; then vendor/bin/phpcs -p ./src ./tests; fi"
 
 after_script:
   - if [[ $TRAVIS_PHP_VERSION != 'hhvm' && $TRAVIS_PHP_VERSION != '7.0' ]]; then php vendor/bin/ocular code-coverage:upload --format=php-clover coverage.clover; fi
diff --git a/composer.json b/composer.json
index a40ea6c..4b0cf5c 100644
--- a/composer.json
+++ b/composer.json
@@ -1,6 +1,6 @@
 {
     "name": "bcrowe/cakephp-api-pagination",
-    "description": "CakePHP 3 plugin that injects pagination information into API responses.",
+    "description": "CakePHP 4 plugin that injects pagination information into API responses.",
     "type": "cakephp-plugin",
     "keywords": [
         "cakephp", "api", "pagination", "cakephp3"
@@ -16,13 +16,13 @@
         }
     ],
     "require": {
-        "php": ">=5.6",
-        "cakephp/cakephp": "~3.6"
+        "php": ">=7.2",
+        "cakephp/cakephp": "^4.0"
     },
     "require-dev": {
-        "phpunit/phpunit" : "~5.0",
-        "scrutinizer/ocular": "1.1",
-        "squizlabs/php_codesniffer": "~2.3.0"
+        "phpunit/phpunit" : "^8.5",
+        "scrutinizer/ocular": "1.7",
+        "cakephp/cakephp-codesniffer": "~4.0.0"
     },
     "autoload": {
         "psr-4": {
@@ -37,7 +37,9 @@
         }
     },
     "scripts": {
-        "test": "phpunit"
+        "test": "phpunit",
+        "cs-check": "phpcs src/ tests/",
+        "cs-fix": "phpcbf src/ tests/"
     },
     "extra": {
         "branch-alias": {
diff --git a/phpcs.xml.dist b/phpcs.xml.dist
new file mode 100644
index 0000000..10c5a08
--- /dev/null
+++ b/phpcs.xml.dist
@@ -0,0 +1,11 @@
+<?xml version="1.0"?>
+<ruleset name="CustomCakePHPCodeSniffer">
+
+    <exclude-pattern>tests/bootstrap.php</exclude-pattern>
+
+    <rule ref="vendor/cakephp/cakephp-codesniffer/CakePHP">
+        <exclude name="CakePHP.Commenting"/>
+    </rule>
+
+</ruleset>
+
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index c6c4b9c..1136eba 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -31,7 +31,7 @@
     <logging>
         <log type="tap" target="build/report.tap"/>
         <log type="junit" target="build/report.junit.xml"/>
-        <log type="coverage-html" target="build/coverage" charset="UTF-8" yui="true" highlight="true"/>
+        <log type="coverage-html" target="build/coverage"/>
         <log type="coverage-text" target="build/coverage.txt"/>
         <log type="coverage-clover" target="build/logs/clover.xml"/>
     </logging>
diff --git a/src/Controller/Component/ApiPaginationComponent.php b/src/Controller/Component/ApiPaginationComponent.php
index b5944ea..3f12012 100644
--- a/src/Controller/Component/ApiPaginationComponent.php
+++ b/src/Controller/Component/ApiPaginationComponent.php
@@ -1,4 +1,6 @@
 <?php
+declare(strict_types=1);
+
 namespace BryanCrowe\ApiPagination\Controller\Component;
 
 use Cake\Controller\Component;
@@ -19,7 +21,7 @@ class ApiPaginationComponent extends Component
     protected $_defaultConfig = [
         'key' => 'pagination',
         'aliases' => [],
-        'visible' => []
+        'visible' => [],
     ];
 
     /**
@@ -33,7 +35,7 @@ class ApiPaginationComponent extends Component
      * Injects the pagination info into the response if the current request is a
      * JSON or XML request with pagination.
      *
-     * @param \Cake\Event\Event $event The Controller.beforeRender event.
+     * @param  \Cake\Event\Event $event The Controller.beforeRender event.
      * @return void
      */
     public function beforeRender(Event $event)
@@ -43,7 +45,7 @@ public function beforeRender(Event $event)
         }
 
         $subject = $event->getSubject();
-        $this->pagingInfo = $this->request->getParam('paging')[$subject->getName()];
+        $this->pagingInfo = $this->getController()->getRequest()->getAttribute('paging')[$subject->getName()];
         $config = $this->getConfig();
 
         if (!empty($config['aliases'])) {
@@ -55,7 +57,9 @@ public function beforeRender(Event $event)
         }
 
         $subject->set($config['key'], $this->pagingInfo);
-        $subject->viewVars['_serialize'][] = $config['key'];
+        $data = $subject->viewBuilder()->getVar('_serialize') ?? [];
+        $data[] = $config['key'];
+        $subject->set('_serialize', $data);
     }
 
     /**
@@ -96,8 +100,9 @@ protected function setVisibility()
      */
     protected function isPaginatedApiRequest()
     {
-        if ($this->request->getParam('paging') &&
-            $this->request->is(['json', 'xml'])
+        if (
+            $this->getController()->getRequest()->getAttribute('paging')
+            && $this->getController()->getRequest()->is(['json', 'xml'])
         ) {
             return true;
         }
diff --git a/tests/Fixture/ArticlesFixture.php b/tests/Fixture/ArticlesFixture.php
index 44dbc8c..d241bc2 100644
--- a/tests/Fixture/ArticlesFixture.php
+++ b/tests/Fixture/ArticlesFixture.php
@@ -11,7 +11,7 @@ class ArticlesFixture extends TestFixture
         'id' => ['type' => 'integer'],
         'title' => ['type' => 'string', 'null' => false],
         'body' => 'text',
-        '_constraints' => ['primary' => ['type' => 'primary', 'columns' => ['id']]]
+        '_constraints' => ['primary' => ['type' => 'primary', 'columns' => ['id']]],
     ];
 
     public $records = [
@@ -37,6 +37,6 @@ class ArticlesFixture extends TestFixture
         ['title' => 'Post #20', 'body' => 'This is the article body.'],
         ['title' => 'Post #21', 'body' => 'This is the article body.'],
         ['title' => 'Post #22', 'body' => 'This is the article body.'],
-        ['title' => 'Post #23', 'body' => 'This is the article body.']
+        ['title' => 'Post #23', 'body' => 'This is the article body.'],
     ];
 }
diff --git a/tests/TestCase/Controller/Component/ApiPaginationComponentTest.php b/tests/TestCase/Controller/Component/ApiPaginationComponentTest.php
index be75d76..ddb7f95 100644
--- a/tests/TestCase/Controller/Component/ApiPaginationComponentTest.php
+++ b/tests/TestCase/Controller/Component/ApiPaginationComponentTest.php
@@ -1,11 +1,12 @@
 <?php
+declare(strict_types=1);
+
 namespace BryanCrowe\ApiPagination\Test;
 
 use BryanCrowe\ApiPagination\Controller\Component\ApiPaginationComponent;
 use BryanCrowe\ApiPagination\TestApp\Controller\ArticlesController;
 use Cake\Event\Event;
 use Cake\Http\ServerRequest as Request;
-use Cake\Http\Response;
 use Cake\ORM\TableRegistry;
 use Cake\TestSuite\TestCase;
 
@@ -23,9 +24,9 @@ class ApiPaginationComponentTest extends TestCase
      *
      * @return void
      */
-    public function setUp()
+    public function setUp(): void
     {
-        $this->request = new Request('/articles');
+        $this->request = new Request(['url' => '/articles']);
         $this->response = $this->createMock('Cake\Http\Response');
         $this->controller = new ArticlesController($this->request, $this->response);
         $this->Articles = TableRegistry::get('BryanCrowe/ApiPagination.Articles', ['table' => 'bryancrowe_articles']);
@@ -37,7 +38,7 @@ public function setUp()
      *
      * @return void
      */
-    public function tearDown()
+    public function tearDown(): void
     {
         parent::tearDown();
     }
@@ -63,29 +64,34 @@ public function testNonApiPaginatedRequest()
      */
     public function testDefaultPaginationSettings()
     {
-        $this->controller->request = $this->controller->request->withEnv('HTTP_ACCEPT', 'application/json');
+        $this->controller->setRequest(
+            $this->controller->getRequest()->withEnv('HTTP_ACCEPT', 'application/json')
+        );
         $this->controller->set('data', $this->controller->paginate($this->Articles));
         $apiPaginationComponent = new ApiPaginationComponent($this->controller->components());
         $event = new Event('Controller.beforeRender', $this->controller);
         $apiPaginationComponent->beforeRender($event);
 
-        $result = $apiPaginationComponent->_registry->getController()->viewVars['pagination'];
+        $result = $apiPaginationComponent->getController()->viewBuilder()->getVar('pagination');
         $expected = [
-            'finder' => 'all',
-            'page' => 1,
-            'current' => 20,
             'count' => 23,
+            'current' => 20,
             'perPage' => 20,
+            'page' => 1,
+            'requestedPage' => 1,
+            'pageCount' => 2,
+            'start' => 1,
+            'end' => 20,
             'prevPage' => false,
             'nextPage' => true,
-            'pageCount' => 2,
             'sort' => null,
-            'direction' => false,
-            'limit' => null,
+            'direction' => null,
             'sortDefault' => false,
             'directionDefault' => false,
+            'completeSort' => [],
+            'limit' => null,
             'scope' => null,
-            'completeSort' => []
+            'finder' => 'all',
         ];
 
         $this->assertSame($expected, $result);
@@ -98,29 +104,34 @@ public function testDefaultPaginationSettings()
      */
     public function testVisibilitySettings()
     {
-        $this->controller->request = $this->controller->request->withEnv('HTTP_ACCEPT', 'application/json');
+        $this->controller->setRequest(
+            $this->controller->getRequest()->withEnv('HTTP_ACCEPT', 'application/json')
+        );
         $this->controller->set('data', $this->controller->paginate($this->Articles));
-        $apiPaginationComponent = new ApiPaginationComponent($this->controller->components(), [
+        $apiPaginationComponent = new ApiPaginationComponent(
+            $this->controller->components(),
+            [
             'visible' => [
                 'page',
                 'current',
                 'count',
                 'prevPage',
                 'nextPage',
-                'pageCount'
+                'pageCount',
+            ],
             ]
-        ]);
+        );
         $event = new Event('Controller.beforeRender', $this->controller);
         $apiPaginationComponent->beforeRender($event);
 
-        $result = $apiPaginationComponent->_registry->getController()->viewVars['pagination'];
+        $result = $apiPaginationComponent->getController()->viewBuilder()->getVar('pagination');
         $expected = [
-            'page' => 1,
-            'current' => 20,
             'count' => 23,
+            'current' => 20,
+            'page' => 1,
+            'pageCount' => 2,
             'prevPage' => false,
             'nextPage' => true,
-            'pageCount' => 2
         ];
 
         $this->assertSame($expected, $result);
@@ -133,32 +144,40 @@ public function testVisibilitySettings()
      */
     public function testAliasSettings()
     {
-        $this->controller->request = $this->controller->request->withEnv('HTTP_ACCEPT', 'application/json');
+        $this->controller->setRequest(
+            $this->controller->getRequest()->withEnv('HTTP_ACCEPT', 'application/json')
+        );
         $this->controller->set('data', $this->controller->paginate($this->Articles));
-        $apiPaginationComponent = new ApiPaginationComponent($this->controller->components(), [
+        $apiPaginationComponent = new ApiPaginationComponent(
+            $this->controller->components(),
+            [
             'aliases' => [
                 'page' => 'curPage',
                 'current' => 'currentCount',
                 'count' => 'totalCount',
+            ],
             ]
-        ]);
+        );
         $event = new Event('Controller.beforeRender', $this->controller);
         $apiPaginationComponent->beforeRender($event);
 
-        $result = $apiPaginationComponent->_registry->getController()->viewVars['pagination'];
+        $result = $apiPaginationComponent->getController()->viewBuilder()->getVar('pagination');
         $expected = [
-            'finder' => 'all',
             'perPage' => 20,
+            'requestedPage' => 1,
+            'pageCount' => 2,
+            'start' => 1,
+            'end' => 20,
             'prevPage' => false,
             'nextPage' => true,
-            'pageCount' => 2,
             'sort' => null,
-            'direction' => false,
-            'limit' => null,
+            'direction' => null,
             'sortDefault' => false,
             'directionDefault' => false,
-            'scope' => null,
             'completeSort' => [],
+            'limit' => null,
+            'scope' => null,
+            'finder' => 'all',
             'curPage' => 1,
             'currentCount' => 20,
             'totalCount' => 23,
@@ -174,31 +193,39 @@ public function testAliasSettings()
      */
     public function testKeySetting()
     {
-        $this->controller->request = $this->controller->request->withEnv('HTTP_ACCEPT', 'application/json');
+        $this->controller->setRequest(
+            $this->controller->getRequest()->withEnv('HTTP_ACCEPT', 'application/json')
+        );
         $this->controller->set('data', $this->controller->paginate($this->Articles));
-        $apiPaginationComponent = new ApiPaginationComponent($this->controller->components(), [
-            'key' => 'paging'
-        ]);
+        $apiPaginationComponent = new ApiPaginationComponent(
+            $this->controller->components(),
+            [
+            'key' => 'paging',
+            ]
+        );
         $event = new Event('Controller.beforeRender', $this->controller);
         $apiPaginationComponent->beforeRender($event);
 
-        $result = $apiPaginationComponent->_registry->getController()->viewVars['paging'];
+        $result = $apiPaginationComponent->getController()->viewBuilder()->getVar('paging');
         $expected = [
-            'finder' => 'all',
-            'page' => 1,
-            'current' => 20,
             'count' => 23,
+            'current' => 20,
             'perPage' => 20,
+            'page' => 1,
+            'requestedPage' => 1,
+            'pageCount' => 2,
+            'start' => 1,
+            'end' => 20,
             'prevPage' => false,
             'nextPage' => true,
-            'pageCount' => 2,
             'sort' => null,
-            'direction' => false,
-            'limit' => null,
+            'direction' => null,
             'sortDefault' => false,
             'directionDefault' => false,
+            'completeSort' => [],
+            'limit' => null,
             'scope' => null,
-            'completeSort' => []
+            'finder' => 'all',
         ];
 
         $this->assertSame($expected, $result);
@@ -211,27 +238,32 @@ public function testKeySetting()
      */
     public function testAllSettings()
     {
-        $this->controller->request = $this->controller->request->withEnv('HTTP_ACCEPT', 'application/json');
+        $this->controller->setRequest(
+            $this->controller->getRequest()->withEnv('HTTP_ACCEPT', 'application/json')
+        );
         $this->controller->set('data', $this->controller->paginate($this->Articles));
-        $apiPaginationComponent = new ApiPaginationComponent($this->controller->components(), [
+        $apiPaginationComponent = new ApiPaginationComponent(
+            $this->controller->components(),
+            [
             'key' => 'fun',
             'aliases' => [
                 'page' => 'currentPage',
                 'count' => 'totalCount',
-                'limit' => 'unusedAlias'
+                'limit' => 'unusedAlias',
             ],
             'visible' => [
                 'currentPage',
                 'totalCount',
                 'limit',
                 'prevPage',
-                'nextPage'
+                'nextPage',
+            ],
             ]
-        ]);
+        );
         $event = new Event('Controller.beforeRender', $this->controller);
         $apiPaginationComponent->beforeRender($event);
 
-        $result = $apiPaginationComponent->_registry->getController()->viewVars['fun'];
+        $result = $apiPaginationComponent->getController()->viewBuilder()->getVar('fun');
         $expected = [
             'prevPage' => false,
             'nextPage' => true,
diff --git a/tests/test_app/TestApp/Controller/ArticlesController.php b/tests/test_app/TestApp/Controller/ArticlesController.php
index f6a6155..428e94c 100644
--- a/tests/test_app/TestApp/Controller/ArticlesController.php
+++ b/tests/test_app/TestApp/Controller/ArticlesController.php
@@ -1,11 +1,13 @@
 <?php
+declare(strict_types=1);
+
 namespace BryanCrowe\ApiPagination\TestApp\Controller;
 
 use Cake\Controller\Controller;
 
 class ArticlesController extends Controller
 {
-    public function initialize()
+    public function initialize(): void
     {
         parent::initialize();
         $this->loadComponent('Paginator');