diff --git a/composer.json b/composer.json
index 8f4e95e..4a2da6f 100644
--- a/composer.json
+++ b/composer.json
@@ -31,6 +31,7 @@
     "bin": ["bin/convert", "bin/build_hw_jsons", "bin/refresh_hw_sources","bin/validate"],
     "require-dev": {
         "phpstan/phpstan": "^1.10",
+        "phpstan/phpstan-deprecation-rules": "^1.1",
         "phpunit/phpunit": "^9.6",
         "squizlabs/php_codesniffer": "^3.7"
     },