diff --git a/composer.json b/composer.json
index 4872eaf6f..7203813de 100644
--- a/composer.json
+++ b/composer.json
@@ -51,7 +51,7 @@
         "typo3-ter/vhs": "self.version"
     },
     "require-dev": {
-        "phpstan/phpstan": "^1.8",
+        "phpstan/phpstan": "1.12.1",
         "phpunit/phpunit": "^5.7 || ^9.5",
         "php-coveralls/php-coveralls": "^2.5",
         "squizlabs/php_codesniffer": "^3.7",