diff --git a/.gitignore b/.gitignore
index 5049f84..3806554 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 /vendor
 /.idea
+composer.lock
diff --git a/.travis.yml b/.travis.yml
index 6fca301..f07d3dd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,12 +3,13 @@ language: php
 php:
   - 7.2
   - 7.3
+  - 7.4
 
 before_script:
   - composer self-update
   - composer install --prefer-source --no-interaction --dev
 
-script: phpunit
+script: vendor/bin/phpunit
 
 notifications:
   email:
diff --git a/composer.json b/composer.json
index 96bd786..6ea5b41 100644
--- a/composer.json
+++ b/composer.json
@@ -11,9 +11,9 @@
   ],
   "require": {
     "php": ">=7.2",
-    "illuminate/contracts": "^5.1. | ^6.0 | ^7.0 | ^8.0",
-    "illuminate/support": "^5.1 | ^6.0 | ^7.0 | ^8.0",
-    "illuminate/http": "5.1 | ^6.0 | ^7.0 | ^8.0"
+    "illuminate/contracts": "^5.1|^6.0|^7.0|^8.0",
+    "illuminate/support": "^5.1|^6.0|^7.0|^8.0",
+    "illuminate/http": "^5.1|^6.0|^7.0|^8.0"
   },
   "require-dev": {
     "phpunit/phpunit": "^5.4",
diff --git a/tests/HttpPushTest.php b/tests/HttpPushTest.php
index af27a71..7c77a6a 100644
--- a/tests/HttpPushTest.php
+++ b/tests/HttpPushTest.php
@@ -15,12 +15,12 @@ class HttpPushTest extends PHPUnit_Framework_TestCase
      */
     protected $instance;
 
-    public function setUp()
+    public function setUp(): void
     {
         $this->instance = new HttpPush();
     }
 
-    public function tearDown()
+    public function tearDown(): void
     {
         $this->instance->clear();
         parent::tearDown();
@@ -89,7 +89,7 @@ public function test_resource_generates_font_link_string()
     {
         $this->instance->queueResource('/assets/font/Roboto.woff', 'font');
 
-        $this->assertEquals('</assets/font/Roboto.woff>; rel=preload; as=font', $this->instance->generateLinks()[0]);
+        $this->assertEquals('</assets/font/Roboto.woff>; rel=preload; as=font; crossorigin', $this->instance->generateLinks()[0]);
     }
 
     public function test_clear_resources()