diff --git a/README.md b/README.md
index b8a776b..97bba25 100644
--- a/README.md
+++ b/README.md
@@ -85,6 +85,7 @@ twigcs /path/to/views --reporter emacs
 twigcs /path/to/views --reporter json
 twigcs /path/to/views --reporter csv
 twigcs /path/to/views --reporter githubAction
+twigcs /path/to/views --reporter gitlab
 ```
 
 ## Using older twig versions
diff --git a/composer.json b/composer.json
index c982c54..320bd7e 100644
--- a/composer.json
+++ b/composer.json
@@ -11,6 +11,7 @@
     "require": {
         "php": "^7.4 || ^8.0",
         "ext-ctype": "*",
+        "ext-hash": "*",
         "ext-json": "*",
         "ext-mbstring": "*",
         "ext-simplexml": "*",
diff --git a/src/Container.php b/src/Container.php
index 1c69f50..bc7a54d 100644
--- a/src/Container.php
+++ b/src/Container.php
@@ -7,8 +7,10 @@
 use FriendsOfTwig\Twigcs\Reporter\CsvReporter;
 use FriendsOfTwig\Twigcs\Reporter\EmacsReporter;
 use FriendsOfTwig\Twigcs\Reporter\GithubActionReporter;
+use FriendsOfTwig\Twigcs\Reporter\GitLabReporter;
 use FriendsOfTwig\Twigcs\Reporter\JsonReporter;
 use FriendsOfTwig\Twigcs\Reporter\JUnitReporter;
+use FriendsOfTwig\Twigcs\Reporter\ReporterInterface;
 use FriendsOfTwig\Twigcs\Validator\Validator;
 
 class Container extends \ArrayObject
@@ -43,6 +45,10 @@ public function __construct()
             return new GithubActionReporter(new ConsoleReporter());
         };
 
+        $this['reporter.gitlab'] = function (): ReporterInterface {
+            return new GitLabReporter();
+        };
+
         $this['lexer'] = function () {
             return new Lexer();
         };
diff --git a/src/Reporter/GitLabReporter.php b/src/Reporter/GitLabReporter.php
new file mode 100644
index 0000000..60a5f2e
--- /dev/null
+++ b/src/Reporter/GitLabReporter.php
@@ -0,0 +1,68 @@
+<?php
+
+declare(strict_types=1);
+
+namespace FriendsOfTwig\Twigcs\Reporter;
+
+use FriendsOfTwig\Twigcs\Validator\Violation;
+use JsonException;
+use Symfony\Component\Console\Output\OutputInterface;
+use function hash;
+use function implode;
+use function json_encode;
+
+/**
+ * Code Quality report format supported by GitLab.
+ *
+ * @see https://docs.gitlab.com/ee/user/project/merge_requests/code_quality.html#implementing-a-custom-tool
+ */
+final class GitLabReporter implements ReporterInterface
+{
+    /**
+     * {@inheritdoc}
+     *
+     * @throws JsonException
+     */
+    public function report(OutputInterface $output, array $violations): void
+    {
+        $errors = [];
+
+        foreach ($violations as $violation) {
+            switch ($violation->getSeverity()) {
+                case Violation::SEVERITY_INFO:
+                    $severity = 'info';
+                    break;
+                case Violation::SEVERITY_WARNING:
+                    $severity = 'minor';
+                    break;
+                default:
+                    $severity = 'major';
+                    break;
+            }
+
+            $errors[] = [
+                'description' => $violation->getReason(),
+                'fingerprint' => hash(
+                    'sha256',
+                    implode(
+                        '', [
+                            $violation->getFilename(),
+                            $violation->getLine(),
+                            $violation->getColumn(),
+                            $violation->getReason(),
+                        ]
+                    )
+                ),
+                'severity' => $severity,
+                'location' => [
+                    'path' => $violation->getFilename(),
+                    'lines' => [
+                        'begin' => $violation->getLine(),
+                    ],
+                ],
+            ];
+        }
+
+        $output->writeln(json_encode($errors, \JSON_THROW_ON_ERROR | \JSON_PRETTY_PRINT));
+    }
+}
diff --git a/tests/Reporter/GitLabReporterTest.php b/tests/Reporter/GitLabReporterTest.php
new file mode 100644
index 0000000..4ab748c
--- /dev/null
+++ b/tests/Reporter/GitLabReporterTest.php
@@ -0,0 +1,78 @@
+<?php
+
+declare(strict_types=1);
+
+namespace FriendsOfTwig\Twigcs\Tests\Reporter;
+
+use FriendsOfTwig\Twigcs\Reporter\GitLabReporter;
+use FriendsOfTwig\Twigcs\Validator\Violation;
+use JsonException;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Console\Output\ConsoleOutput;
+
+final class GitLabReporterTest extends TestCase
+{
+    public const EXPECTED_REPORT = <<<EOF
+[
+    {
+        "description": "You are not allowed to do that.",
+        "fingerprint": "f72519b40b7ced7c6475d20ae6a0f4d26014891d98a29750dde4931e22745796",
+        "severity": "major",
+        "location": {
+            "path": "template.twig",
+            "lines": {
+                "begin": 10
+            }
+        }
+    },
+    {
+        "description": "You should not do that.",
+        "fingerprint": "3068464e6cfb4c459076c2b5e910b8d99a80bbbadb1ff1e3e1551a71352ca3e2",
+        "severity": "minor",
+        "location": {
+            "path": "template.twig",
+            "lines": {
+                "begin": 10
+            }
+        }
+    },
+    {
+        "description": "You might not want to do that.",
+        "fingerprint": "b2b519c15c4819fe59ccff92544b35c1dd331a41d0ec138dc3f6b966d0362187",
+        "severity": "info",
+        "location": {
+            "path": "template.twig",
+            "lines": {
+                "begin": 10
+            }
+        }
+    }
+]
+EOF;
+
+    public function testReport(): void
+    {
+        $reporter = new GitLabReporter();
+        $output = $this->createMock(ConsoleOutput::class);
+
+        $output
+            ->expects($this->once())
+            ->method('writeln')
+            ->with(self::EXPECTED_REPORT);
+
+        $reporter->report($output, [
+            new Violation('template.twig', 10, 20, 'You are not allowed to do that.'),
+            new Violation('template.twig', 10, 20, 'You should not do that.', Violation::SEVERITY_WARNING),
+            new Violation('template.twig', 10, 20, 'You might not want to do that.', Violation::SEVERITY_INFO),
+        ]);
+    }
+
+    public function testReportWithJsonException(): void
+    {
+        $reporter = new GitLabReporter();
+        $output = $this->createMock(ConsoleOutput::class);
+
+        $this->expectException(JsonException::class);
+        $reporter->report($output, [new Violation('template.twig', 10, 20, "Error message with latin1 character \xE7")]);
+    }
+}