diff --git a/.github/workflows/unit-tests.yaml b/.github/workflows/unit-tests.yaml
new file mode 100644
index 0000000..0d399e6
--- /dev/null
+++ b/.github/workflows/unit-tests.yaml
@@ -0,0 +1,24 @@
+name: "Unit Tests"
+
+on:
+    pull_request:
+    push:
+    workflow_dispatch:
+
+jobs:
+    unit-tests:
+        runs-on: ubuntu-latest
+        strategy:
+            matrix:
+                php-versions: ['7.2', '7.3', '7.4', '8.0']
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v2
+            - name: Install PHP
+              uses: shivammathur/setup-php@v2
+              with:
+                php-version: ${{ matrix.php-versions }}
+            - name: Install dependencies
+              run: composer install --no-interaction --no-ansi
+            - name: PHPUnit
+              run: php vendor/bin/phpunit
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index ea22c30..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,21 +0,0 @@
-language: php
-
-php:
-  - 5.4
-  - 5.5
-  - 5.6
-  - 7.0
-  - hhvm
-
-sudo: false
-
-env:
-  - COMPOSER_OPTS=""
-  - COMPOSER_OPTS="--prefer-lowest"
-
-before_script:
-  - travis_retry composer self-update
-  - travis_retry composer update $COMPOSER_OPTS
-
-script:
-  - php vendor/bin/phpunit
\ No newline at end of file
diff --git a/composer.json b/composer.json
index 77443f3..d3b6ddb 100644
--- a/composer.json
+++ b/composer.json
@@ -11,12 +11,12 @@
         }
     ],
     "require": {
-        "league/glide": "^1.0",
+        "league/glide": "^2.0",
         "symfony/http-foundation": "^2.3|^3.0|^4.0|^5.0"
     },
     "require-dev": {
-        "mockery/mockery": "^0.9",
-        "phpunit/phpunit": "^4.0"
+        "mockery/mockery": "^1.3.3",
+        "phpunit/phpunit": "^8.5|^9.4"
     },
     "autoload": {
         "psr-4": {
diff --git a/src/Responses/SymfonyResponseFactory.php b/src/Responses/SymfonyResponseFactory.php
index 5350af7..ca4c1c5 100644
--- a/src/Responses/SymfonyResponseFactory.php
+++ b/src/Responses/SymfonyResponseFactory.php
@@ -2,7 +2,7 @@
 
 namespace League\Glide\Responses;
 
-use League\Flysystem\FilesystemInterface;
+use League\Flysystem\FilesystemOperator;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\StreamedResponse;
 
@@ -25,23 +25,23 @@ public function __construct(Request $request = null)
 
     /**
      * Create the response.
-     * @param  FilesystemInterface $cache The cache file system.
+     * @param  FilesystemOperator $cache The cache file system.
      * @param  string              $path  The cached file path.
      * @return StreamedResponse    The response object.
      */
-    public function create(FilesystemInterface $cache, $path)
+    public function create(FilesystemOperator $cache, $path)
     {
         $stream = $cache->readStream($path);
 
         $response = new StreamedResponse();
-        $response->headers->set('Content-Type', $cache->getMimetype($path));
-        $response->headers->set('Content-Length', $cache->getSize($path));
+        $response->headers->set('Content-Type', $cache->mimeType($path));
+        $response->headers->set('Content-Length', $cache->fileSize($path));
         $response->setPublic();
         $response->setMaxAge(31536000);
         $response->setExpires(date_create()->modify('+1 years'));
 
         if ($this->request) {
-            $response->setLastModified(date_create()->setTimestamp($cache->getTimestamp($path)));
+            $response->setLastModified(date_create()->setTimestamp($cache->lastModified($path)));
             $response->isNotModified($this->request);
         }
 
diff --git a/tests/Responses/SymfonyResponseFactoryTest.php b/tests/Responses/SymfonyResponseFactoryTest.php
index 6336a12..6250077 100644
--- a/tests/Responses/SymfonyResponseFactoryTest.php
+++ b/tests/Responses/SymfonyResponseFactoryTest.php
@@ -1,39 +1,41 @@
 <?php
 
-namespace League\Glide\Responses;
+namespace Responses;
 
+use League\Glide\Responses\SymfonyResponseFactory;
 use Mockery;
+use PHPUnit\Framework\TestCase;
 
-class SymfonyResponseFactoryTest extends \PHPUnit_Framework_TestCase
+class SymfonyResponseFactoryTest extends TestCase
 {
-    public function tearDown()
+    public function tearDown(): void
     {
         Mockery::close();
     }
 
-    public function testCreateInstance()
+    public function testCreateInstance(): void
     {
-        $this->assertInstanceOf(
+        self::assertInstanceOf(
             'League\Glide\Responses\SymfonyResponseFactory',
             new SymfonyResponseFactory()
         );
     }
 
-    public function testCreate()
+    public function testCreate(): void
     {
-        $this->cache = Mockery::mock('League\Flysystem\FilesystemInterface', function ($mock) {
-            $mock->shouldReceive('getMimetype')->andReturn('image/jpeg')->once();
-            $mock->shouldReceive('getSize')->andReturn(0)->once();
+        $cache = Mockery::mock('League\Flysystem\FilesystemOperator', function ($mock) {
+            $mock->shouldReceive('mimeType')->andReturn('image/jpeg')->once();
+            $mock->shouldReceive('fileSize')->andReturn(0)->once();
             $mock->shouldReceive('readStream');
         });
 
         $factory = new SymfonyResponseFactory();
-        $response = $factory->create($this->cache, '');
+        $response = $factory->create($cache, '');
 
-        $this->assertInstanceOf('Symfony\Component\HttpFoundation\StreamedResponse', $response);
-        $this->assertEquals('image/jpeg', $response->headers->get('Content-Type'));
-        $this->assertEquals('0', $response->headers->get('Content-Length'));
-        $this->assertContains(gmdate('D, d M Y H:i', strtotime('+1 years')), $response->headers->get('Expires'));
-        $this->assertEquals('max-age=31536000, public', $response->headers->get('Cache-Control'));
+        self::assertInstanceOf('Symfony\Component\HttpFoundation\StreamedResponse', $response);
+        self::assertEquals('image/jpeg', $response->headers->get('Content-Type'));
+        self::assertEquals('0', $response->headers->get('Content-Length'));
+        self::assertStringContainsString(gmdate('D, d M Y H:i', strtotime('+1 years')), $response->headers->get('Expires'));
+        self::assertEquals('max-age=31536000, public', $response->headers->get('Cache-Control'));
     }
 }