diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 761e3604..aafb2117 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -7,8 +7,11 @@ jobs:
     strategy:
       matrix:
         php: [7.2, 7.3, 7.4]
-        laravel: [^6.0, ^7.0]
+        laravel: [^6.0, ^7.0, ^8.0]
         lazy_types: ['false', 'true']
+        exclude:
+          - php: 7.2
+            laravel: ^8.0
     name: P=${{ matrix.php }} L=${{ matrix.laravel }} Lazy types=${{ matrix.lazy_types }}
     runs-on: ubuntu-18.04
     env:
@@ -27,6 +30,8 @@ jobs:
       - run: composer remove --dev matt-allan/laravel-code-style --no-update
       - run: composer require illuminate/contracts:${{ matrix.laravel }} --no-update
       - run: composer remove --dev nunomaduro/larastan --no-update
+      - run: composer remove --dev laravel/legacy-factories --no-update
+        if: (matrix.laravel == '^6.0' || matrix.laravel == '^7.0')
 
       - name: Get composer cache directory
         id: composercache
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1149bee1..2a57f790 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,9 @@ CHANGELOG
 - Upgrade to webonxy/graphql-php 14.0.0 [\#645 / mfn](https://github.com/rebing/graphql-laravel/pull/645)
 - Remove support for Laravel < 6.0 [\#651 / mfn](https://github.com/rebing/graphql-laravel/pull/651)
   This also bumps the minimum required version to PHP 7.2
+  
+### Added
+- Support for Laravel 8 [\#672 / mfn](https://github.com/rebing/graphql-laravel/pull/672)
 
 2020-07-02, 5.1.2
 -----------------
diff --git a/composer.json b/composer.json
index 3ff27794..33445589 100644
--- a/composer.json
+++ b/composer.json
@@ -35,19 +35,20 @@
     "type": "library",
     "require": {
         "php": ">= 7.2",
-        "illuminate/contracts": "^6.0|^7.0",
-        "illuminate/support": "^6.0|^7.0",
+        "illuminate/contracts": "^6.0|^7.0|^8.0",
+        "illuminate/support": "^6.0|^7.0|^8.0",
         "webonyx/graphql-php": "^14.0",
         "ext-json": "*"
     },
     "require-dev": {
-        "orchestra/testbench": "4.0.*|5.0.*",
+        "orchestra/testbench": "4.0.*|5.0.*|^6.0",
         "phpunit/phpunit": "~7.0|~8.0",
-        "nunomaduro/larastan": "0.6.1",
+        "nunomaduro/larastan": "0.6.4",
         "mockery/mockery": "^1.2",
         "friendsofphp/php-cs-fixer": "^2.15",
         "matt-allan/laravel-code-style": "0.5.1",
-        "ext-pdo_sqlite": "*"
+        "ext-pdo_sqlite": "*",
+        "laravel/legacy-factories": "^1.0"
     },
     "autoload": {
         "psr-4": {
diff --git a/phpstan.neon.dist b/phpstan.neon.dist
index 69233102..178b6289 100644
--- a/phpstan.neon.dist
+++ b/phpstan.neon.dist
@@ -13,7 +13,6 @@ parameters:
         - '/Parameter #3 \$subject of function str_replace expects array\|string, string\|false given/'
         - '/Method Rebing\\GraphQL\\GraphQL::routeNameTransformer\(\) should return string but returns string\|null/'
         - '/Cannot access property \$parameters on mixed/'
-        - '/Parameter #1 \$haystack of function mb_stripos expects string, \(array\)\|string given/'
         - '/Strict comparison using === between null and array will always evaluate to false/'
         # \Rebing\GraphQL\Support\SelectFields::handleFields
         - '/Binary operation "." between string and array\|string\|null results in an error/'
diff --git a/src/GraphQLUploadMiddleware.php b/src/GraphQLUploadMiddleware.php
index cb81dd59..6572b12d 100644
--- a/src/GraphQLUploadMiddleware.php
+++ b/src/GraphQLUploadMiddleware.php
@@ -36,7 +36,7 @@ public function handle(Request $request, Closure $next)
      */
     public function processRequest(Request $request): Request
     {
-        $contentType = $request->header('content-type') ?: '';
+        $contentType = $request->headers->get('content-type') ?: '';
 
         if (mb_stripos($contentType, 'multipart/form-data') !== false) {
             $this->validateParsedBody($request);