diff --git a/.github/workflows/integration_tests.yml b/.github/workflows/integration_tests.yml
index e04dcb56..22ad9e0d 100644
--- a/.github/workflows/integration_tests.yml
+++ b/.github/workflows/integration_tests.yml
@@ -18,6 +18,7 @@ jobs:
       - uses: shivammathur/setup-php@v2
         with:
           php-version: '7.4'
+          tools: composer:v1
           coverage: none
 
       # Due to version incompatibility with older Laravels we test, we remove it
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index ea982c90..600304e9 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -6,7 +6,7 @@ jobs:
   integration:
     strategy:
       matrix:
-        php: [7.1, 7.2, 7.3, 7.4]
+        php: [7.1, 7.2, 7.3, 7.4, 8.0]
         laravel: [5.5.*, ^6.0, ^7.0, ^8.0]
         exclude:
           - php: 7.1
@@ -19,6 +19,10 @@ jobs:
             laravel: ^8.0
           - php: 7.4
             laravel: 5.5.*
+          - php: 8.0
+            laravel: 5.5.*
+          - php: 8.0
+            laravel: ^6.0
     name: PHP ${{ matrix.php }} Laravel ${{ matrix.laravel }}
     runs-on: ubuntu-18.04
     env:
@@ -37,6 +41,7 @@ jobs:
       - run: composer remove --dev matt-allan/laravel-code-style --no-update
       - run: composer require illuminate/contracts:${{ matrix.laravel }} --no-update
       - run: composer remove --dev nunomaduro/larastan --no-update
+      - run: composer remove --dev friendsofphp/php-cs-fixer --no-update
       - run: composer require --dev laravel/legacy-factories --no-update
         if: matrix.laravel == '^8.0'
 
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a04066d1..19cdbc62 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,9 @@ CHANGELOG
 [Next release](https://github.com/rebing/graphql-laravel/compare/5.1.4...master)
 --------------
 
+### Added
+- Support for PHP 8 [\#686 / mfn](https://github.com/rebing/graphql-laravel/pull/686)
+
 2020-09-03, 5.1.4
 -----------------
 Hotfix release to replace 5.1.3
diff --git a/composer.json b/composer.json
index e88f4cfb..96b1c5db 100644
--- a/composer.json
+++ b/composer.json
@@ -41,7 +41,7 @@
     },
     "require-dev": {
         "orchestra/testbench": "3.5.*|3.6.*|3.7.*|3.8.*|3.9.*|4.0.*|5.0.*|^6.0",
-        "phpunit/phpunit": "^5.5|~6.0|~7.0|~8.0",
+        "phpunit/phpunit": "^5.5|~6.0|~7.0|~8.0|^9",
         "mockery/mockery": "^1.2",
         "friendsofphp/php-cs-fixer": "^2.15",
         "matt-allan/laravel-code-style": "0.5.0"
diff --git a/src/Console/PublishCommand.php b/src/Console/PublishCommand.php
index 08c4cdfd..b8734974 100644
--- a/src/Console/PublishCommand.php
+++ b/src/Console/PublishCommand.php
@@ -85,8 +85,6 @@ protected function createParentDirectory(string $directory): void
      */
     protected function status(string $from, string $to): void
     {
-        $from = str_replace(base_path(), '', realpath($from));
-        $to = str_replace(base_path(), '', realpath($to));
         $this->line("<info>Copied File</info> <comment>[{$from}]</comment> <info>To</info> <comment>[{$to}]</comment>");
     }
 }
diff --git a/src/Support/Field.php b/src/Support/Field.php
index e904a440..d85f391e 100644
--- a/src/Support/Field.php
+++ b/src/Support/Field.php
@@ -162,13 +162,15 @@ protected function getResolver(): ?Closure
             $additionalParams = array_slice($method->getParameters(), 3);
 
             $additionalArguments = array_map(function ($param) use ($arguments, $fieldsAndArguments) {
-                $className = null !== $param->getClass() ? $param->getClass()->getName() : null;
+                $paramType = $param->getType();
 
-                if (null === $className) {
+                if ($paramType->isBuiltin()) {
                     throw new InvalidArgumentException("'{$param->name}' could not be injected");
                 }
 
-                if (Closure::class === $param->getType()->getName()) {
+                $className = $param->getType()->getName();
+
+                if (Closure::class === $className) {
                     return function (int $depth = null) use ($arguments, $fieldsAndArguments): SelectFields {
                         return $this->instanciateSelectFields($arguments, $fieldsAndArguments, $depth);
                     };