diff --git a/composer.json b/composer.json
index 6818f33d..e992ccae 100644
--- a/composer.json
+++ b/composer.json
@@ -7,7 +7,7 @@
 	],
 	"require": {
 		"php": "^7.2 || ^8.0",
-		"phpstan/phpstan": "^1.11"
+		"phpstan/phpstan": "^1.11.7"
 	},
 	"conflict": {
 		"doctrine/collections": "<1.0",
diff --git a/extension.neon b/extension.neon
index 81469b91..f4d3b7ef 100644
--- a/extension.neon
+++ b/extension.neon
@@ -91,6 +91,10 @@ services:
 
 	-
 		class: PHPStan\Doctrine\Driver\DriverDetector
+	-
+		class: PHPStan\Doctrine\DoctrineDiagnoseExtension
+		tags:
+			- phpstan.diagnoseExtension
 	-
 		class: PHPStan\Type\Doctrine\HydrationModeReturnTypeResolver
 	-
diff --git a/src/Doctrine/DoctrineDiagnoseExtension.php b/src/Doctrine/DoctrineDiagnoseExtension.php
new file mode 100644
index 00000000..58fda398
--- /dev/null
+++ b/src/Doctrine/DoctrineDiagnoseExtension.php
@@ -0,0 +1,83 @@
+<?php declare(strict_types = 1);
+
+namespace PHPStan\Doctrine;
+
+use Composer\InstalledVersions;
+use Doctrine\ORM\EntityManagerInterface;
+use OutOfBoundsException;
+use PHPStan\Command\Output;
+use PHPStan\Diagnose\DiagnoseExtension;
+use PHPStan\Doctrine\Driver\DriverDetector;
+use PHPStan\Type\Doctrine\ObjectMetadataResolver;
+use function count;
+use function sprintf;
+
+class DoctrineDiagnoseExtension implements DiagnoseExtension
+{
+
+	/** @var ObjectMetadataResolver */
+	private $objectMetadataResolver;
+
+	/** @var DriverDetector */
+	private $driverDetector;
+
+	public function __construct(
+		ObjectMetadataResolver $objectMetadataResolver,
+		DriverDetector $driverDetector
+	)
+	{
+		$this->objectMetadataResolver = $objectMetadataResolver;
+		$this->driverDetector = $driverDetector;
+	}
+
+	public function print(Output $output): void
+	{
+		$output->writeLineFormatted(sprintf(
+			'<info>Doctrine\'s objectManagerLoader:</info> %s',
+			$this->objectMetadataResolver->hasObjectManagerLoader() ? 'In use' : 'No'
+		));
+
+		$objectManager = $this->objectMetadataResolver->getObjectManager();
+		if ($objectManager instanceof EntityManagerInterface) {
+			$connection = $objectManager->getConnection();
+			$driver = $this->driverDetector->detect($connection);
+
+			$output->writeLineFormatted(sprintf(
+				'<info>Detected driver:</info> %s',
+				$driver === null ? 'None' : $driver
+			));
+		}
+
+		$packages = [];
+		$candidates = [
+			'doctrine/dbal',
+			'doctrine/orm',
+			'doctrine/common',
+			'doctrine/collections',
+			'doctrine/persistence',
+		];
+		foreach ($candidates as $package) {
+			try {
+				$installedVersion = InstalledVersions::getPrettyVersion($package);
+			} catch (OutOfBoundsException $e) {
+				continue;
+			}
+
+			if ($installedVersion === null) {
+				continue;
+			}
+
+			$packages[$package] = $installedVersion;
+		}
+
+		if (count($packages) > 0) {
+			$output->writeLineFormatted('<info>Installed Doctrine packages:</info>');
+			foreach ($packages as $package => $version) {
+				$output->writeLineFormatted(sprintf('%s: %s', $package, $version));
+			}
+		}
+
+		$output->writeLineFormatted('');
+	}
+
+}