diff --git a/rector.php b/rector.php
index 814daee2..bbc974ce 100644
--- a/rector.php
+++ b/rector.php
@@ -13,6 +13,7 @@
 use Rector\DeadCode\Rector\Node\RemoveNonExistingVarAnnotationRector;
 use Rector\Php80\Rector\Catch_\RemoveUnusedVariableInCatchRector;
 use Rector\Php80\Rector\FuncCall\ClassOnObjectRector;
+use Rector\Php80\Rector\FunctionLike\MixedTypeRector;
 use Rector\Php81\Rector\Property\ReadOnlyPropertyRector;
 use Rector\Php83\Rector\ClassMethod\AddOverrideAttributeToOverriddenMethodsRector;
 use Rector\Strict\Rector\Ternary\DisallowedShortTernaryRuleFixerRector;
@@ -36,6 +37,7 @@
     // uncomment to reach your current PHP version
     // ->withPhpSets(php82: true)
     ->withRules([
+        MixedTypeRector::class,
         ReadOnlyPropertyRector::class,
         RemoveUnusedVariableInCatchRector::class,
         ClassOnObjectRector::class,
diff --git a/src/ObjectCache/ObjectCache.php b/src/ObjectCache/ObjectCache.php
index afdef833..b9e5e7cb 100644
--- a/src/ObjectCache/ObjectCache.php
+++ b/src/ObjectCache/ObjectCache.php
@@ -52,7 +52,6 @@ private function isBlacklisted(mixed $source): bool
      * cache will yield an exception. If the target is finally cached, it is
      * no longer in precached status.
      *
-     * @param mixed $source
      * @param Type $targetType
      * @return void
      */