diff --git a/phpstan.neon b/phpstan.neon
index dcbccd314ad..b74dc43f8cb 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -92,7 +92,10 @@ parameters:
                 - src/StaticTypeMapper/ValueObject/Type/*Type.php
 
         # generics nullable bugs
-        - '#Method (.*?) should return (.*?)\|null but returns PhpParser\\Node\|null#'
+        -
+            message: '#Method (.*?) should return (.*?)\|null but returns PhpParser\\Node\|null#'
+            path: src/PhpParser/Node/BetterNodeFinder.php
+
         - '#Method (.*?) should return array<T of PhpParser\\Node\> but returns array<PhpParser\\Node\>#'
 
         - '#Property Rector\\PhpParser\\Node\\AssignAndBinaryMap\:\:\$binaryOpToAssignClasses \(array<class\-string<PhpParser\\Node\\Expr\\BinaryOp\>, class\-string<PhpParser\\Node\\Expr\\BinaryOp\>\>\) does not accept array#'
@@ -121,6 +124,8 @@ parameters:
         # array_index on generic types
         - '#Method Rector\\NodeTypeResolver\\PHPStan\\Type\\TypeFactory\:\:uniquateTypes\(\) should return array<TType of PHPStan\\Type\\Type\> but returns array<int, PHPStan\\Type\\Type\>#'
 
+        - '#Method Rector\\Arguments\\ArgumentDefaultValueReplacer\:\:processReplaces\(\) should return \(TCall of PhpParser\\Node\\Expr\\FuncCall\|PhpParser\\Node\\Expr\\MethodCall\|PhpParser\\Node\\Expr\\New_\|PhpParser\\Node\\Expr\\StaticCall\|PhpParser\\Node\\Stmt\\ClassMethod\)\|null but returns PhpParser\\Node\\Stmt\\ClassMethod\|null#'
+
         # native filesystem calls, required for performance reasons
         -
             message: '#"@\\unlink\(\$tmpPath\)" is forbidden to use#'
@@ -160,9 +165,6 @@ parameters:
                 - rules/EarlyReturn/Rector/If_/ChangeAndIfToEarlyReturnRector.php
                 - src/PhpParser/NodeTransformer.php
 
-        # impossible to validate json string is a class-string
-        - '#Parameter \#1 \$rectorClass of class Rector\\ChangesReporting\\ValueObject\\RectorWithLineChange constructor expects class\-string<Rector\\Contract\\Rector\\RectorInterface\>\|Rector\\Contract\\Rector\\RectorInterface, string given#'
-
         # mapper re-use
         - '#Parameter \#1 \$type of method Rector\\PHPStanStaticTypeMapper\\TypeMapper\\ObjectWithoutClassTypeMapper\:\:mapToPhpParserNode\(\) expects PHPStan\\Type\\ObjectWithoutClassType, PHPStan\\Type\\Accessory\\Has(Property|Method)Type given#'
 
diff --git a/rules/Arguments/ArgumentDefaultValueReplacer.php b/rules/Arguments/ArgumentDefaultValueReplacer.php
index 8e07d0f51a2..570c3e9163b 100644
--- a/rules/Arguments/ArgumentDefaultValueReplacer.php
+++ b/rules/Arguments/ArgumentDefaultValueReplacer.php
@@ -5,7 +5,6 @@
 namespace Rector\Arguments;
 
 use PhpParser\BuilderHelpers;
-use PhpParser\Node;
 use PhpParser\Node\Arg;
 use PhpParser\Node\Expr;
 use PhpParser\Node\Expr\ClassConstFetch;
@@ -27,10 +26,16 @@ public function __construct(
     ) {
     }
 
+    /**
+     * @template TCall as (MethodCall|StaticCall|ClassMethod|FuncCall|New_)
+     *
+     * @param TCall $node
+     * @return TCall|null
+     */
     public function processReplaces(
         MethodCall | StaticCall | ClassMethod | FuncCall | New_ $node,
         ReplaceArgumentDefaultValueInterface $replaceArgumentDefaultValue
-    ): ?Node {
+    ): MethodCall | StaticCall | ClassMethod | FuncCall | New_ |null {
         if ($node instanceof ClassMethod) {
             if (! isset($node->params[$replaceArgumentDefaultValue->getPosition()])) {
                 return null;
@@ -82,6 +87,12 @@ private function processParams(
         return $classMethod;
     }
 
+    /**
+     * @template TCall as (MethodCall|StaticCall|FuncCall|New_)
+     *
+     * @param TCall $expr
+     * @return TCall|null
+     */
     private function processArgs(
         MethodCall | StaticCall | FuncCall | New_ $expr,
         ReplaceArgumentDefaultValueInterface $replaceArgumentDefaultValue
diff --git a/rules/Renaming/NodeManipulator/ClassRenamer.php b/rules/Renaming/NodeManipulator/ClassRenamer.php
index debab26ff44..16579d3ea5f 100644
--- a/rules/Renaming/NodeManipulator/ClassRenamer.php
+++ b/rules/Renaming/NodeManipulator/ClassRenamer.php
@@ -45,6 +45,7 @@ public function __construct(
 
     /**
      * @param array<string, string> $oldToNewClasses
+     * @return ($node is FullyQualified ? FullyQualified : Node)
      */
     public function renameNode(Node $node, array $oldToNewClasses, ?Scope $scope): ?Node
     {
diff --git a/src/ChangesReporting/ValueObject/RectorWithLineChange.php b/src/ChangesReporting/ValueObject/RectorWithLineChange.php
index 83f00dec292..5ea9f462b76 100644
--- a/src/ChangesReporting/ValueObject/RectorWithLineChange.php
+++ b/src/ChangesReporting/ValueObject/RectorWithLineChange.php
@@ -52,6 +52,7 @@ public function getRectorClass(): string
      */
     public static function decode(array $json): self
     {
+        /** @var class-string<RectorInterface> $rectorClass */
         $rectorClass = $json[self::KEY_RECTOR_CLASS];
         Assert::string($rectorClass);
 
diff --git a/src/PHPStanStaticTypeMapper/TypeMapper/UnionTypeMapper.php b/src/PHPStanStaticTypeMapper/TypeMapper/UnionTypeMapper.php
index 8f1c4768dbb..6631d244355 100644
--- a/src/PHPStanStaticTypeMapper/TypeMapper/UnionTypeMapper.php
+++ b/src/PHPStanStaticTypeMapper/TypeMapper/UnionTypeMapper.php
@@ -155,8 +155,10 @@ private function resolveNullableType(NullableType $nullableType): null|NullableT
     /**
      * @param TypeKind::* $typeKind
      */
-    private function mapNullabledType(Type $nullabledType, string $typeKind): ?Node
-    {
+    private function mapNullabledType(
+        Type $nullabledType,
+        string $typeKind
+    ): NullableType|ComplexType|PhpParserUnionType|null {
         // void cannot be nullable
         if ($nullabledType->isVoid()->yes()) {
             return null;
diff --git a/src/PhpParser/Node/BetterNodeFinder.php b/src/PhpParser/Node/BetterNodeFinder.php
index dba0c0661cb..35f2677976d 100644
--- a/src/PhpParser/Node/BetterNodeFinder.php
+++ b/src/PhpParser/Node/BetterNodeFinder.php
@@ -9,7 +9,6 @@
 use PhpParser\Node\Expr\Variable;
 use PhpParser\Node\Stmt;
 use PhpParser\Node\Stmt\Class_;
-use PhpParser\Node\Stmt\ClassLike;
 use PhpParser\Node\Stmt\ClassMethod;
 use PhpParser\Node\Stmt\Function_;
 use PhpParser\NodeFinder;
@@ -134,7 +133,7 @@ public function find(Node | array $nodes, callable $filter): array
     /**
      * @api symfony
      * @param Node[] $nodes
-     * @return ClassLike|null
+     * @return Class_|null
      */
     public function findFirstNonAnonymousClass(array $nodes): ?Node
     {
diff --git a/tests/NodeTypeResolver/StaticTypeMapper/StaticTypeMapperTest.php b/tests/NodeTypeResolver/StaticTypeMapper/StaticTypeMapperTest.php
index 59472581c73..63031789556 100644
--- a/tests/NodeTypeResolver/StaticTypeMapper/StaticTypeMapperTest.php
+++ b/tests/NodeTypeResolver/StaticTypeMapper/StaticTypeMapperTest.php
@@ -4,7 +4,6 @@
 
 namespace Rector\Tests\NodeTypeResolver\StaticTypeMapper;
 
-use PHPStan\Type\Type;
 use Iterator;
 use PhpParser\Node;
 use PhpParser\Node\Identifier;
@@ -17,6 +16,7 @@
 use PHPStan\Type\Generic\GenericObjectType;
 use PHPStan\Type\IterableType;
 use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
 use PHPUnit\Framework\Attributes\DataProvider;
 use Rector\StaticTypeMapper\StaticTypeMapper;
 use Rector\Testing\PHPUnit\AbstractLazyTestCase;