diff --git a/.travis.yml b/.travis.yml
index 065235d..a8752fa 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,5 @@
 language: php
 sudo: false
-dist: trusty
 
 env:
   global:
@@ -9,21 +8,21 @@ env:
 
 matrix:
   include:
-    - php: 5.6
+    - php: 7.2
       env:
-        - PHP5=1
         - PHPCS_TEST=1
         - PHPUNIT_TEST=1
-    - php: 7.0
-      env:
-        - PHPUNIT_TEST=1
     - php: 7.4
       env:
         - PHPUNIT_COVERAGE_TEST=1
+    - php: 8.0
+      env:
+        - PHPUNIT_TEST=1
+
 
 before_script:
   # Init PHP
-  - composer self-update || true
+  - composer self-update --2 || true
   - phpenv rehash
   - phpenv config-rm xdebug.ini || true
 
@@ -32,7 +31,6 @@ before_script:
   - composer update
 
 script:
-  - if [[ $PHP5 ]]; then composer require silverstripe/assets 1.4.8; fi
   - if [[ $PHPUNIT_TEST ]]; then vendor/bin/phpunit; fi
   - if [[ $PHPUNIT_COVERAGE_TEST ]]; then phpdbg -qrr vendor/bin/phpunit --coverage-clover=coverage.xml; fi
   - if [[ $PHPCS_TEST ]]; then composer run-script lint; fi
diff --git a/README.md b/README.md
index 3de3e32..0caed42 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ Easily integrate Emogrifier into SilverStripe and send Emails with inlined CSS a
 ## Installation and Requirements
 
  - Requires the [EmogrifierPlugin](https://github.com/bummzack/swiftmailer-emogrifyplugin) and its dependencies.
- - SilverStripe 4.1+
+ - SilverStripe 4.9+
 
 Install via composer:
 
diff --git a/composer.json b/composer.json
index 142d66a..ba2c2a2 100644
--- a/composer.json
+++ b/composer.json
@@ -9,9 +9,9 @@
         "emogrifier"
     ],
     "require": {
-        "silverstripe/framework": "^4.1",
-        "silverstripe/assets": "^1.1",
-        "bummzack/swiftmailer-emogrifyplugin" : "^0.2"
+        "php": "^7.2 || ^8.0",
+        "silverstripe/framework": "^4.9",
+        "bummzack/swiftmailer-emogrifyplugin" : "^1.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^5.7",
@@ -19,7 +19,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "0.x-dev"
+            "dev-master": "1.x-dev"
         }
     },
     "autoload": {
diff --git a/src/EmogrifierPlugin.php b/src/EmogrifierPlugin.php
index 652280a..a4376db 100644
--- a/src/EmogrifierPlugin.php
+++ b/src/EmogrifierPlugin.php
@@ -2,7 +2,6 @@
 
 namespace Bummzack\SilverStripeEmogrify;
 
-use Pelago\Emogrifier;
 use SilverStripe\Assets\File;
 use SilverStripe\Core\Config\Configurable;
 use SilverStripe\Core\Path;
@@ -22,18 +21,15 @@ class EmogrifierPlugin extends \Bummzack\SwiftMailer\EmogrifyPlugin\EmogrifierPl
      * Can be set via config YAML.
      *
      * @config
-     * @var string
+     * @var string|null
      */
     private static $css_file = null;
 
     /**
      * EmogrifierPlugin constructor.
-     * @param Emogrifier|null $emogrifier
      */
-    public function __construct(Emogrifier $emogrifier = null)
+    public function __construct()
     {
-        parent::__construct($emogrifier);
-
         if ($file = $this->config()->css_file) {
             $this->loadCssFromFile($file);
         }
@@ -61,7 +57,7 @@ public function loadCssFromFile($file)
             throw new \InvalidArgumentException('File "' . $path . '" does not have .css extension.');
         }
 
-        $this->getEmogrifier()->setCss(file_get_contents($path));
+        $this->setCss(file_get_contents($path));
 
         return $this;
     }
diff --git a/tests/EmogrifierPluginTest.php b/tests/EmogrifierPluginTest.php
index fe4eab2..a9cfa1c 100644
--- a/tests/EmogrifierPluginTest.php
+++ b/tests/EmogrifierPluginTest.php
@@ -3,13 +3,14 @@
 namespace Bummzack\SilverStripeEmogrify\Tests;
 
 use Bummzack\SilverStripeEmogrify\EmogrifierPlugin;
-use Pelago\Emogrifier;
 use SilverStripe\Core\Config\Config;
 use SilverStripe\Core\Path;
 use SilverStripe\Dev\SapphireTest;
 
 class EmogrifierPluginTest extends SapphireTest
 {
+    protected $usesDatabase = false;
+
     public function setUp()
     {
         parent::setUp();
@@ -22,15 +23,17 @@ public function testLoadCssFromConfig()
         $file = realpath(__DIR__) . DIRECTORY_SEPARATOR . 'EmogrifierPluginTest.css';
         Config::modify()->set(EmogrifierPlugin::class, 'css_file', $file);
 
-        new EmogrifierPlugin($this->createMockEmogrifier());
+        $plugin = new EmogrifierPlugin();
+        $this->assertEquals($plugin->getCss(), file_get_contents($file));
     }
 
     public function testLoadCssFromFile()
     {
         $file = realpath(__DIR__) . DIRECTORY_SEPARATOR . 'EmogrifierPluginTest.css';
 
-        $plugin = new EmogrifierPlugin($this->createMockEmogrifier());
+        $plugin = new EmogrifierPlugin();
         $plugin->loadCssFromFile($file);
+        $this->assertEquals($plugin->getCss(), file_get_contents($file));
 
         $this->expectException(\InvalidArgumentException::class);
         $this->expectExceptionMessage('File "' . __FILE__ . '" does not have .css extension.');
@@ -44,30 +47,4 @@ public function testLoadNonExistantCssFile()
         $plugin = new EmogrifierPlugin();
         $plugin->loadCssFromFile('testDummy.css');
     }
-
-    /**
-     * Create a mock emogrifier instance to ensure the CSS that is being set will match the code from the test file.
-     * @return \PHPUnit_Framework_MockObject_MockObject
-     */
-    private function createMockEmogrifier()
-    {
-        $css = <<<EOT
-.test {
-  color: green;
-}
-
-EOT;
-
-        $emogrifier = $this->getMockBuilder(Emogrifier::class)
-            ->disableOriginalConstructor()
-            ->getMock();
-
-        $emogrifier->expects($this->once())
-            ->method('setCss')
-            ->with(
-                $this->equalTo($css)
-            );
-
-        return $emogrifier;
-    }
 }