diff --git a/stubs/ReflectionClass.stub b/stubs/ReflectionClass.stub
index 06f8e08a2e..39f65a4e82 100644
--- a/stubs/ReflectionClass.stub
+++ b/stubs/ReflectionClass.stub
@@ -48,4 +48,15 @@ class ReflectionClass
     public function getAttributes(?string $name = null, int $flags = 0)
     {
     }
+
+	/**
+	 * @phpstan-assert-if-true class-string<\UnitEnum> $this->name
+	 * @phpstan-assert-if-true class-string<\UnitEnum> $this->getName()
+	 * @phpstan-assert-if-true ReflectionClass<UnitEnum> $this
+	 * @return (T is \UnitEnum ? true: false)
+	 */
+	public function isEnum(): bool
+	{
+	}
+
 }
diff --git a/stubs/ReflectionClassWithLazyObjects.stub b/stubs/ReflectionClassWithLazyObjects.stub
index 1a53ae8750..373e3deaaa 100644
--- a/stubs/ReflectionClassWithLazyObjects.stub
+++ b/stubs/ReflectionClassWithLazyObjects.stub
@@ -110,4 +110,14 @@ class ReflectionClass
 	public function isUninitializedLazyObject(object $object): bool
 	{
 	}
+
+	/**
+	 * @phpstan-assert-if-true class-string<\UnitEnum> $this->name
+	 * @phpstan-assert-if-true class-string<\UnitEnum> $this->getName()
+	 * @phpstan-assert-if-true ReflectionClass<UnitEnum> $this
+	 * @return (T is \UnitEnum ? true: false)
+	 */
+	public function isEnum(): bool
+	{
+	}
 }
diff --git a/tests/PHPStan/Analyser/data/enum-reflection-php81.php b/tests/PHPStan/Analyser/data/enum-reflection-php81.php
index 502de6eebd..57e6f67ee7 100644
--- a/tests/PHPStan/Analyser/data/enum-reflection-php81.php
+++ b/tests/PHPStan/Analyser/data/enum-reflection-php81.php
@@ -3,8 +3,6 @@
 namespace EnumReflection81;
 
 use ReflectionEnum;
-use ReflectionEnumBackedCase;
-use ReflectionEnumUnitCase;
 use function PHPStan\Testing\assertType;
 
 enum Foo: int
diff --git a/tests/PHPStan/Analyser/nsrt/reflectionclass-isEnum.php b/tests/PHPStan/Analyser/nsrt/reflectionclass-isEnum.php
new file mode 100644
index 0000000000..2937e75789
--- /dev/null
+++ b/tests/PHPStan/Analyser/nsrt/reflectionclass-isEnum.php
@@ -0,0 +1,38 @@
+<?php // lint >= 8.1
+
+namespace ReflectionClassIsEnum;
+
+use ReflectionClass;
+use function PHPStan\Testing\assertType;
+
+/**
+ * @param class-string $class
+ */
+function testNarrowClassAfterIsEnum(string $class): void {
+	$r = new ReflectionClass($class);
+	if ($r->isEnum()) {
+		assertType('class-string<UnitEnum>', $r->name);
+		assertType('class-string<UnitEnum>', $r->getName());
+
+		assertType('UnitEnum', $r->newInstance());
+
+
+		// Todo:
+		//assertType('ReflectionClass<UnitEnum>', $r);
+
+	}
+
+
+
+}
+
+function testTemplateAssertions(): void  {
+	$enumR = new ReflectionClass(Foo::class);
+	assertType('ReflectionClass<ReflectionClassIsEnum\\Foo>', $enumR);
+	assertType('true', $enumR->isEnum());
+}
+
+
+enum Foo {
+	case Bar;
+}