diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 016ba68..d8d6ac6 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -10,17 +10,51 @@ jobs:
   test:
     runs-on: ubuntu-latest
 
+    strategy:
+      fail-fast: false
+      matrix:
+        php: [8.2, 8.3, 8.4, 8.5]
+        laravel: [10.*, 11.*, 12.*]
+        include:
+          - laravel: 10.*
+            testbench: ^8.0
+            phpunit: ^10.0
+          - laravel: 11.*
+            testbench: ^9.0
+            phpunit: ^10.5
+          - laravel: 12.*
+            testbench: ^10.0
+            phpunit: ^11.0
+        exclude:
+          # Laravel 10 doesn't support PHP 8.4
+          - php: 8.4
+            laravel: 10.*
+          # Only Laravel 12 supports PHP 8.5
+          - php: 8.5
+            laravel: 10.*
+          - php: 8.5
+            laravel: 11.*
+
+    name: PHP ${{ matrix.php }} - Laravel ${{ matrix.laravel }}
+
     steps:
       - uses: actions/checkout@v3
 
-      - uses: php-actions/composer@v6
-
-      - name: PHPUnit Tests
-        uses: php-actions/phpunit@master
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
         with:
-          version: 9.6
-          bootstrap: vendor/autoload.php
-          configuration: ./phpunit.xml
+          php-version: ${{ matrix.php }}
+          extensions: dom, curl, libxml, mbstring, zip, pcntl, pdo, sqlite, pdo_sqlite, bcmath, soap, intl, gd, exif, iconv
+          coverage: none
+
+      - name: Install dependencies
+        run: |
+          composer require "laravel/framework:${{ matrix.laravel }}" --no-interaction --no-update
+          composer require "orchestra/testbench:${{ matrix.testbench }}" "phpunit/phpunit:${{ matrix.phpunit }}" --dev --no-interaction --no-update
+          composer update --prefer-dist --no-interaction --no-progress
+
+      - name: Execute tests
+        run: vendor/bin/phpunit
 
   lint:
     runs-on: ubuntu-latest
diff --git a/src/Resources/JsonApiResource.php b/src/Resources/JsonApiResource.php
index 09cf1a9..1956e8c 100644
--- a/src/Resources/JsonApiResource.php
+++ b/src/Resources/JsonApiResource.php
@@ -75,6 +75,19 @@ public function toArray($request): array
             : $this->addToResponse($request, $this->getResourceData($request));
     }
 
+    /**
+     * Resolve the resource data to an array.
+     *
+     * Override Laravel 12's implementation to prevent circular dependency
+     * between toArray() and toAttributes().
+     */
+    public function resolveResourceData($request): array
+    {
+        return is_null($this->resource)
+            ? []
+            : $this->addToResponse($request, $this->getResourceData($request));
+    }
+
     /**
      * Returns the value of $this->data and sets it if it's empty.
      */
@@ -172,7 +185,7 @@ protected function getType(): string
      * Default to either `registerData['attributes']` or an empty array.
      * Should be overwritten to create custom attributes.
      */
-    protected function toAttributes(Request $request): array
+    public function toAttributes(Request $request): array
     {
         return $this->registerData['attributes'] ?? [];
     }
diff --git a/tests/Resources/DeveloperResource.php b/tests/Resources/DeveloperResource.php
index 0235428..315161b 100644
--- a/tests/Resources/DeveloperResource.php
+++ b/tests/Resources/DeveloperResource.php
@@ -9,7 +9,7 @@ class DeveloperResource extends JsonApiResource
 {
     protected string $type = 'developers';
 
-    protected function toAttributes(Request $request): array
+    public function toAttributes(Request $request): array
     {
         return [
             'name' => $this->resource->name,
diff --git a/tests/Resources/InternResource.php b/tests/Resources/InternResource.php
index ad47170..a18b1f0 100644
--- a/tests/Resources/InternResource.php
+++ b/tests/Resources/InternResource.php
@@ -13,7 +13,7 @@ class InternResource extends JsonApiResource
 {
     protected string $type = 'interns';
 
-    protected function toAttributes(Request $request): array
+    public function toAttributes(Request $request): array
     {
         return [
             'name' => $this->resource->name,
diff --git a/tests/Resources/PullRequestResource.php b/tests/Resources/PullRequestResource.php
index 433b1d1..945b303 100644
--- a/tests/Resources/PullRequestResource.php
+++ b/tests/Resources/PullRequestResource.php
@@ -9,7 +9,7 @@ class PullRequestResource extends JsonApiResource
 {
     protected string $type = 'pull_requests';
 
-    protected function toAttributes(Request $request): array
+    public function toAttributes(Request $request): array
     {
         return [
             'title' => $this->resource->title,
diff --git a/tests/Resources/ReviewResource.php b/tests/Resources/ReviewResource.php
index 7aff566..a8515d2 100644
--- a/tests/Resources/ReviewResource.php
+++ b/tests/Resources/ReviewResource.php
@@ -9,7 +9,7 @@ class ReviewResource extends JsonApiResource
 {
     protected string $type = 'reviews';
 
-    protected function toAttributes(Request $request): array
+    public function toAttributes(Request $request): array
     {
         return [
             'content' => $this->resource->content,