diff --git a/rules-tests/Php81/Rector/Class_/MyCLabsClassToEnumRector/Fixture/private_constant_with_static_method.php.inc b/rules-tests/Php81/Rector/Class_/MyCLabsClassToEnumRector/Fixture/private_constant_with_static_method.php.inc
index d8b76649db9..a83e6ef05af 100644
--- a/rules-tests/Php81/Rector/Class_/MyCLabsClassToEnumRector/Fixture/private_constant_with_static_method.php.inc
+++ b/rules-tests/Php81/Rector/Class_/MyCLabsClassToEnumRector/Fixture/private_constant_with_static_method.php.inc
@@ -23,7 +23,7 @@ namespace Rector\Tests\Php81\Rector\Class_\MyCLabsClassToEnumRector\Fixture;
 
 use MyCLabs\Enum\Enum;
 
-enum PrivateConstWithStaticMethod
+enum PrivateConstWithStaticMethod : string
 {
     /**
      * Some comment
diff --git a/rules-tests/Php81/Rector/Class_/MyCLabsClassToEnumRector/Fixture/some_class.php.inc b/rules-tests/Php81/Rector/Class_/MyCLabsClassToEnumRector/Fixture/some_class.php.inc
index 147d371f4d5..07f705db1a1 100644
--- a/rules-tests/Php81/Rector/Class_/MyCLabsClassToEnumRector/Fixture/some_class.php.inc
+++ b/rules-tests/Php81/Rector/Class_/MyCLabsClassToEnumRector/Fixture/some_class.php.inc
@@ -22,7 +22,7 @@ namespace Rector\Tests\Php81\Rector\Class_\MyCLabsClassToEnumRector\Fixture;
 
 use MyCLabs\Enum\Enum;
 
-enum SomeClass
+enum SomeClass : string
 {
     /**
      * Some comment
diff --git a/rules-tests/Php81/Rector/Class_/SpatieEnumClassToEnumRector/Fixture/some_class.php.inc b/rules-tests/Php81/Rector/Class_/SpatieEnumClassToEnumRector/Fixture/some_class.php.inc
index 7e083403f76..4bc2404f949 100644
--- a/rules-tests/Php81/Rector/Class_/SpatieEnumClassToEnumRector/Fixture/some_class.php.inc
+++ b/rules-tests/Php81/Rector/Class_/SpatieEnumClassToEnumRector/Fixture/some_class.php.inc
@@ -21,7 +21,7 @@ namespace Rector\Tests\Php81\Rector\Class_\SpatieEnumClassToEnumRector\Fixture;
 
 use Spatie\Enum\Enum;
 
-enum StatusEnum
+enum StatusEnum : string
 {
     case draft = 'draft';
     case published = 'published';
diff --git a/rules/Php81/NodeFactory/EnumFactory.php b/rules/Php81/NodeFactory/EnumFactory.php
index 280e6dd5470..bed7128e782 100644
--- a/rules/Php81/NodeFactory/EnumFactory.php
+++ b/rules/Php81/NodeFactory/EnumFactory.php
@@ -5,6 +5,7 @@
 namespace Rector\Php81\NodeFactory;
 
 use PhpParser\BuilderFactory;
+use PhpParser\Node\Identifier;
 use PhpParser\Node\Stmt\Class_;
 use PhpParser\Node\Stmt\ClassConst;
 use PhpParser\Node\Stmt\Enum_;
@@ -12,6 +13,7 @@
 use PHPStan\PhpDocParser\Ast\PhpDoc\MethodTagValueNode;
 use PHPStan\PhpDocParser\Ast\PhpDoc\PhpDocTagNode;
 use Rector\BetterPhpDocParser\PhpDocInfo\PhpDocInfoFactory;
+use Rector\Core\PhpParser\Node\Value\ValueResolver;
 use Rector\NodeNameResolver\NodeNameResolver;
 use Rector\NodeTypeResolver\Node\AttributeKey;
 
@@ -20,7 +22,8 @@ final class EnumFactory
     public function __construct(
         private NodeNameResolver $nodeNameResolver,
         private PhpDocInfoFactory $phpDocInfoFactory,
-        private BuilderFactory $builderFactory
+        private BuilderFactory $builderFactory,
+        private ValueResolver $valueResolver
     ) {
     }
 
@@ -29,9 +32,18 @@ public function createFromClass(Class_ $class): Enum_
         $shortClassName = $this->nodeNameResolver->getShortName($class);
         $enum = new Enum_($shortClassName);
 
-        // constant to cases
-        foreach ($class->getConstants() as $classConst) {
-            $enum->stmts[] = $this->createEnumCaseFromConst($classConst);
+        $constants = $class->getConstants();
+
+        if ($constants !== []) {
+            $value = $this->valueResolver->getValue($constants[0]->consts[0]->value);
+            $enum->scalarType = is_string($value)
+                ? new Identifier('string')
+                : new Identifier('int');
+
+            // constant to cases
+            foreach ($constants as $constant) {
+                $enum->stmts[] = $this->createEnumCaseFromConst($constant);
+            }
         }
 
         return $enum;
@@ -47,6 +59,8 @@ public function createFromSpatieClass(Class_ $class): Enum_
 
         $docBlockMethods = $phpDocInfo?->getTagsByName('@method');
         if ($docBlockMethods !== null) {
+            $enum->scalarType = new Identifier('string');
+
             foreach ($docBlockMethods as $docBlockMethod) {
                 $enum->stmts[] = $this->createEnumCaseFromDocComment($docBlockMethod);
             }
diff --git a/rules/Php81/Rector/Class_/MyCLabsClassToEnumRector.php b/rules/Php81/Rector/Class_/MyCLabsClassToEnumRector.php
index ae0fc3ebd76..b5ae351eb03 100644
--- a/rules/Php81/Rector/Class_/MyCLabsClassToEnumRector.php
+++ b/rules/Php81/Rector/Class_/MyCLabsClassToEnumRector.php
@@ -43,7 +43,7 @@ final class Action extends Enum
 
                 ,
                 <<<'CODE_SAMPLE'
-enum Action
+enum Action : string
 {
     case VIEW = 'view';
     case EDIT = 'edit';
diff --git a/rules/Php81/Rector/Class_/SpatieEnumClassToEnumRector.php b/rules/Php81/Rector/Class_/SpatieEnumClassToEnumRector.php
index 456c4b256a2..33d772ad904 100644
--- a/rules/Php81/Rector/Class_/SpatieEnumClassToEnumRector.php
+++ b/rules/Php81/Rector/Class_/SpatieEnumClassToEnumRector.php
@@ -51,7 +51,7 @@ class StatusEnum extends Enum
 
                 ,
                 <<<'CODE_SAMPLE'
-enum StatusEnum
+enum StatusEnum : string
 {
     case draft = 'draft';
     case published = 'published';