diff --git a/tests/Integration/Normalizer/NormalizerTest.php b/tests/Integration/Normalizer/NormalizerTest.php
index 4e8db14c..9b4ccb78 100644
--- a/tests/Integration/Normalizer/NormalizerTest.php
+++ b/tests/Integration/Normalizer/NormalizerTest.php
@@ -169,20 +169,22 @@ public function normalize_basic_values_yields_expected_output_data_provider(): i
             ],
         ];
 
-        yield 'unit enum' => [
-            'input' => PureEnum::FOO,
-            'expected' => 'FOO',
-        ];
-
-        yield 'backed string enum' => [
-            'input' => BackedStringEnum::FOO,
-            'expected' => 'foo',
-        ];
-
-        yield 'backed integer enum' => [
-            'input' => BackedIntegerEnum::FOO,
-            'expected' => 42,
-        ];
+        if (PHP_VERSION_ID >= 8_01_00) {
+            yield 'unit enum' => [
+                'input' => PureEnum::FOO,
+                'expected' => 'FOO',
+            ];
+
+            yield 'backed string enum' => [
+                'input' => BackedStringEnum::FOO,
+                'expected' => 'foo',
+            ];
+
+            yield 'backed integer enum' => [
+                'input' => BackedIntegerEnum::FOO,
+                'expected' => 42,
+            ];
+        }
 
         yield 'class with public properties' => [
             'input' => new class () {