diff --git a/composer.json b/composer.json
index 97be7266..bcd0f6de 100644
--- a/composer.json
+++ b/composer.json
@@ -15,13 +15,13 @@
         "rector/jack": "^1.0",
         "rector/rector-src": "dev-main",
         "rector/swiss-knife": "^2.4",
+        "shipmonk/dead-code-detector": "^1.4",
         "symplify/easy-coding-standard": "^13.2",
         "symplify/phpstan-extensions": "^12.0",
         "symplify/phpstan-rules": "^14.13.1",
         "symplify/rule-doc-generator": "^12.2",
         "tomasvotruba/class-leak": "^2.1",
         "tomasvotruba/type-coverage": "^2.3",
-        "tomasvotruba/unused-public": "^2.2",
         "tracy/tracy": "^2.12"
     },
     "autoload": {
diff --git a/phpstan.neon b/phpstan.neon
index ab151e7c..86fe6158 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -7,6 +7,11 @@ parameters:
     errorFormat: symplify
     reportUnmatchedIgnoredErrors: false
 
+    # avoids flaky DCD cache miss on fresh runs
+    shipmonkDeadCode:
+        cache:
+            offloadCollectorData: false
+
     # see https://phpstan.org/writing-php-code/phpdoc-types#global-type-aliases
     typeAliases:
         StmtsAware: \PhpParser\Node\Stmt\Block | \PhpParser\Node\Expr\Closure | \PhpParser\Node\Stmt\Case_ | \PhpParser\Node\Stmt\Catch_ | \PhpParser\Node\Stmt\ClassMethod | \PhpParser\Node\Stmt\Do_ | \PhpParser\Node\Stmt\Else_ | \PhpParser\Node\Stmt\ElseIf_ | \PhpParser\Node\Stmt\Finally_ | \PhpParser\Node\Stmt\For_ | \PhpParser\Node\Stmt\Foreach_ | \PhpParser\Node\Stmt\Function_ | \PhpParser\Node\Stmt\If_ | \PhpParser\Node\Stmt\Namespace_ | \PhpParser\Node\Stmt\TryCatch | \PhpParser\Node\Stmt\While_
@@ -37,6 +42,11 @@ parameters:
         narrow_return: true
 
     ignoreErrors:
+        # DI-container instantiated constructors
+        -
+            identifier: shipmonk.deadMethod
+            message: '#^Unused .*?::__construct$#'
+
         # php enum value minus
         - '#Parameter \#1 \$phpVersion of method Rector\\Config\\RectorConfig\:\:phpVersion\(\) expects (.*?), (.*?) given#'