diff --git a/src/AnnotatedCommand.php b/src/AnnotatedCommand.php
index bdf0cb7..2408c8b 100644
--- a/src/AnnotatedCommand.php
+++ b/src/AnnotatedCommand.php
@@ -259,7 +259,7 @@ private function addInputOption($inputOption, $description = null)
             // Alas, Symfony provides no accessor.
             $class = new \ReflectionClass($inputOption);
             $property = $class->getProperty('suggestedValues');
-            $property->setAccessible(true);
+            (\PHP_VERSION_ID < 80100) and $property->setAccessible(true);
             $suggestedValues = $property->getValue($inputOption);
         }
         $this->addOption(
diff --git a/tests/AnnotatedCommandFactoryTest.php b/tests/AnnotatedCommandFactoryTest.php
index 6cd7ba9..abb11c3 100644
--- a/tests/AnnotatedCommandFactoryTest.php
+++ b/tests/AnnotatedCommandFactoryTest.php
@@ -1216,7 +1216,7 @@ function ($output, $message) {
     function callProtected($object, $method, $args = [])
     {
         $r = new \ReflectionMethod($object, $method);
-        $r->setAccessible(true);
+        (\PHP_VERSION_ID < 80100) and $r->setAccessible(true);
         return $r->invokeArgs($object, $args);
     }
 
diff --git a/tests/FullStackTest.php b/tests/FullStackTest.php
index 3be8567..6287e71 100644
--- a/tests/FullStackTest.php
+++ b/tests/FullStackTest.php
@@ -512,7 +512,7 @@ function simplifyWhitespace($data)
     function callProtected($object, $method, $args = [])
     {
         $r = new \ReflectionMethod($object, $method);
-        $r->setAccessible(true);
+        (\PHP_VERSION_ID < 80100) and $r->setAccessible(true);
         return $r->invokeArgs($object, $args);
     }
 
diff --git a/tests/FullyQualifiedClassCacheTest.php b/tests/FullyQualifiedClassCacheTest.php
index c366649..ca24a6d 100644
--- a/tests/FullyQualifiedClassCacheTest.php
+++ b/tests/FullyQualifiedClassCacheTest.php
@@ -40,7 +40,7 @@ function testFqcn()
     function callProtected($object, $method, $args = [])
     {
         $r = new \ReflectionMethod($object, $method);
-        $r->setAccessible(true);
+        (\PHP_VERSION_ID < 80100) and $r->setAccessible(true);
         return $r->invokeArgs($object, $args);
     }
 }