diff --git a/composer.json b/composer.json
index 64f7ced8875..86dd5e4ddef 100644
--- a/composer.json
+++ b/composer.json
@@ -22,17 +22,17 @@
     "require-dev": {
         "myclabs/php-enum": "^1.8",
         "phpstan/extension-installer": "^1.4",
-        "phpstan/phpstan-deprecation-rules": "^2.0",
         "phpstan/phpstan": "^2.1",
+        "phpstan/phpstan-deprecation-rules": "^2.0",
         "phpunit/phpunit": "^11.5",
         "rector/rector": "^2.1.1",
         "shipmonk/composer-dependency-analyser": "^1.8",
+        "shipmonk/dead-code-detector": "^1.4",
         "symfony/http-kernel": "6.1.*",
         "symplify/easy-coding-standard": "^13.0",
         "symplify/phpstan-extensions": "^12.0",
         "symplify/vendor-patches": "^11.3",
-        "tomasvotruba/class-leak": "^2.0",
-        "tomasvotruba/unused-public": "^2.0"
+        "tomasvotruba/class-leak": "^2.0"
     },
     "autoload": {
         "psr-4": {
diff --git a/phpstan-baseline.neon b/phpstan-baseline.neon
new file mode 100644
index 00000000000..ac12beb1358
--- /dev/null
+++ b/phpstan-baseline.neon
@@ -0,0 +1,13 @@
+parameters:
+	ignoreErrors:
+		-
+			message: '#^Function Symfony\\Component\\DependencyInjection\\Loader\\Configurator\\service not found\.$#'
+			identifier: function.notFound
+			count: 1
+			path: config/config.php
+
+		-
+			message: '#^Used function Symfony\\Component\\DependencyInjection\\Loader\\Configurator\\service not found\.$#'
+			identifier: function.notFound
+			count: 1
+			path: config/config.php
diff --git a/phpstan.neon b/phpstan.neon
index 6b3a414e649..ceca0334344 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -1,3 +1,6 @@
+includes:
+    - phpstan-baseline.neon
+
 parameters:
     level: 8
 
@@ -15,6 +18,11 @@ parameters:
         - '*/Fixture/*'
 
     ignoreErrors:
+        # services are instantiated via the DI container
+        -
+            identifier: shipmonk.deadMethod
+            message: '#^Unused .*?::__construct$#'
+
         -
             message: '#Parameter \#1 \$commandName of method Symfony\\Component\\Console\\Application\:\:setDefaultCommand\(\) expects string, string\|null given#'
             path: src/Console/ConfigTransformerApplication.php