diff --git a/CHANGELOG.md b/CHANGELOG.md
index 98560a4..0dccff5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@ This project adheres to [Semantic Versioning](https://semver.org/).
 ## x.y.z
 
 ### Added
+- Add the PHPStan strict rules (#471)
 - Add a Dependabot action for updating GitHub actions (#452)
 - Use Coveralls for the code coverage (#425)
 
diff --git a/composer.json b/composer.json
index 36e1f52..46ee68e 100644
--- a/composer.json
+++ b/composer.json
@@ -44,6 +44,7 @@
 		"phpstan/extension-installer": "^1.1.0",
 		"phpstan/phpstan": "^1.7.15",
 		"phpstan/phpstan-phpunit": "^1.1.1",
+		"phpstan/phpstan-strict-rules": "^1.3.0",
 		"phpunit/phpunit": "^8.5.26",
 		"saschaegerer/phpstan-typo3": "^1.1.2",
 		"seld/jsonlint": "^1.9.0",
diff --git a/phpstan-baseline.neon b/phpstan-baseline.neon
index 364905f..6fee966 100644
--- a/phpstan-baseline.neon
+++ b/phpstan-baseline.neon
@@ -1,2 +1,6 @@
 parameters:
 	ignoreErrors:
+		-
+			message: "#^PHPDoc type array\\<string\\> of property TTN\\\\Tea\\\\Domain\\\\Repository\\\\Product\\\\TeaRepository\\:\\:\\$defaultOrderings is not the same as PHPDoc type array of overridden property TYPO3\\\\CMS\\\\Extbase\\\\Persistence\\\\Repository\\<TTN\\\\Tea\\\\Domain\\\\Model\\\\Product\\\\Tea\\>\\:\\:\\$defaultOrderings\\.$#"
+			count: 1
+			path: Classes/Domain/Repository/Product/TeaRepository.php