diff --git a/src/Http/HttpRequestFactory.php b/src/Http/HttpRequestFactory.php
index 51037ab..5eed065 100644
--- a/src/Http/HttpRequestFactory.php
+++ b/src/Http/HttpRequestFactory.php
@@ -61,7 +61,9 @@ public function createRequestFromGlobals() {
 	 */
 	private function isJsonContent(array $serverParameters): bool {
         $contentType = $serverParameters[self::SERVER_PARAMETER_CONTENT_TYPE] ?? null;
-        return $contentType === self::CONTENT_TYPE_JSON;
+        $contentType = strtolower(trim(explode(';', $contentType)[0] ?? ''));
+
+        return $contentType === self::CONTENT_TYPE_JSON || str_ends_with($contentType, '+json');
 	}
 	
 	/**
diff --git a/tests/Unit/Http/HttpRequestFactoryTest.php b/tests/Unit/Http/HttpRequestFactoryTest.php
new file mode 100644
index 0000000..d7d7cc2
--- /dev/null
+++ b/tests/Unit/Http/HttpRequestFactoryTest.php
@@ -0,0 +1,120 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Simovative\Zeus\Tests\Unit\Http;
+
+use PHPUnit\Framework\TestCase;
+use Simovative\Zeus\Configuration\Configuration;
+use Simovative\Zeus\Dependency\MasterFactory;
+use Simovative\Zeus\Http\Post\HttpPostRequest;
+use Simovative\Zeus\Stream\PhpInputStream;
+use Simovative\Zeus\Tests\Unit\Stream\PhpInputStreamMock;
+
+class HttpRequestFactoryTest extends TestCase
+{
+    private array $originalServer;
+    private array $originalRequest;
+    private array $originalFiles;
+
+    /**
+     * @dataProvider contentTypeDataProvider
+     */
+    public function testThatJsonContentTypesAreParsedAsJson(string $contentType): void
+    {
+        $masterFactory = new MasterFactory(new Configuration([], __DIR__));
+
+        PhpInputStreamMock::$content = '{"data": {"type": "articles", "id": "1"}}';
+
+        $_SERVER = array_merge($_SERVER, [
+            'REQUEST_METHOD' => 'POST',
+            'CONTENT_TYPE' => $contentType,
+            'REQUEST_URI' => '/api/v1/articles',
+            'HTTP_HOST' => 'localhost',
+            'SERVER_PROTOCOL' => 'HTTP/1.1'
+        ]);
+        $_REQUEST = [];
+        $_FILES = [];
+
+        $request = $masterFactory->createRequestFromGlobals();
+
+        $this->assertInstanceOf(HttpPostRequest::class, $request);
+
+        $parsedBody = $request->getParsedBody();
+        $this->assertEquals('articles', $parsedBody->data->type);
+        $this->assertEquals('1', $parsedBody->data->id);
+    }
+
+    /**
+     * @dataProvider badContentTypeDataProvider
+     */
+    public function testItIgnoresWeirdContentTypes(string $contentType): void
+    {
+        $masterFactory = new MasterFactory(new Configuration([], __DIR__));
+
+        PhpInputStreamMock::$content = '{"data": {"type": "articles", "id": "1"}}';
+
+        $_SERVER = array_merge($_SERVER, [
+            'REQUEST_METHOD' => 'POST',
+            'CONTENT_TYPE' => $contentType,
+            'REQUEST_URI' => '/api/v1/articles',
+            'HTTP_HOST' => 'localhost',
+            'SERVER_PROTOCOL' => 'HTTP/1.1'
+        ]);
+        $_REQUEST = [];
+        $_FILES = [];
+
+        $request = $masterFactory->createRequestFromGlobals();
+
+        $this->assertInstanceOf(HttpPostRequest::class, $request);
+
+        $parsedBody = $request->getParsedBody();
+        $this->assertInstanceOf(PhpInputStream::class, $parsedBody);
+        $this->assertSame('{"data": {"type": "articles", "id": "1"}}', $parsedBody->getContents());
+    }
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->originalServer = $_SERVER;
+        $this->originalRequest = $_REQUEST;
+        $this->originalFiles = $_FILES;
+
+        // autoload-dev missing
+        require_once __DIR__ . '/../Stream/PhpInputStreamMock.php';
+
+        stream_wrapper_unregister('php');
+        stream_wrapper_register('php', PhpInputStreamMock::class);
+    }
+
+    protected function tearDown(): void
+    {
+        $_SERVER = $this->originalServer;
+        $_REQUEST = $this->originalRequest;
+        $_FILES = $this->originalFiles;
+
+        stream_wrapper_restore('php');
+        PhpInputStreamMock::$content = '';
+
+        parent::tearDown();
+    }
+
+    public static function contentTypeDataProvider(): array
+    {
+        return [
+            'standard json' => ['application/json'],
+            'json api' => ['application/vnd.api+json'],
+            'json + charset' => ['application/json; charset=utf-8'],
+            'json api + charset' => ['application/vnd.api+json; charset=utf-8'],
+        ];
+    }
+
+    public static function badContentTypeDataProvider(): array
+    {
+        return [
+            [''],
+            ['adf'],
+        ];
+    }
+}
\ No newline at end of file
diff --git a/tests/Unit/Stream/PhpInputStreamMock.php b/tests/Unit/Stream/PhpInputStreamMock.php
new file mode 100644
index 0000000..cc79b74
--- /dev/null
+++ b/tests/Unit/Stream/PhpInputStreamMock.php
@@ -0,0 +1,37 @@
+<?php
+
+namespace Simovative\Zeus\Tests\Unit\Stream;
+
+class PhpInputStreamMock
+{
+    public $context;
+    public static string $content = '';
+    private int $position = 0;
+
+    public function stream_open($path, $mode, $options, &$opened_path): bool
+    {
+        return true;
+    }
+
+    public function stream_read(int $count): string
+    {
+        $ret = substr(self::$content, $this->position, $count);
+        $this->position += strlen($ret);
+        return $ret;
+    }
+
+    public function stream_eof(): bool
+    {
+        return $this->position >= strlen(self::$content);
+    }
+
+    public function stream_stat(): array
+    {
+        return [];
+    }
+
+    public function stream_set_option(): bool
+    {
+        return true;
+    }
+}
\ No newline at end of file