diff --git a/src/ComposerRequireChecker/NodeVisitor/DefinedSymbolCollector.php b/src/ComposerRequireChecker/NodeVisitor/DefinedSymbolCollector.php
index f8a4c45e..988a221d 100644
--- a/src/ComposerRequireChecker/NodeVisitor/DefinedSymbolCollector.php
+++ b/src/ComposerRequireChecker/NodeVisitor/DefinedSymbolCollector.php
@@ -42,6 +42,7 @@ public function getDefinedSymbols(): array
     public function enterNode(Node $node): Node
     {
         $this->recordClassDefinition($node);
+        $this->recordEnumDefinition($node);
         $this->recordInterfaceDefinition($node);
         $this->recordTraitDefinition($node);
         $this->recordFunctionDefinition($node);
@@ -60,6 +61,15 @@ private function recordClassDefinition(Node $node): void
         $this->recordDefinitionOf($node);
     }
 
+    private function recordEnumDefinition(Node $node): void
+    {
+        if (! ($node instanceof Node\Stmt\Enum_)) {
+            return;
+        }
+
+        $this->recordDefinitionOf($node);
+    }
+
     private function recordInterfaceDefinition(Node $node): void
     {
         if (! ($node instanceof Node\Stmt\Interface_)) {
diff --git a/test/ComposerRequireCheckerTest/Cli/CheckCommandTest.php b/test/ComposerRequireCheckerTest/Cli/CheckCommandTest.php
index 5b5d19c9..ec9a4249 100644
--- a/test/ComposerRequireCheckerTest/Cli/CheckCommandTest.php
+++ b/test/ComposerRequireCheckerTest/Cli/CheckCommandTest.php
@@ -207,4 +207,20 @@ public function testNoUnknownComposerSymbolFound(): void
             $this->commandTester->getDisplay()
         );
     }
+
+    /**
+     * @requires PHP >= 8.1.0
+     */
+    public function testNoUnknownEnumSymbolsFound(): void
+    {
+        $this->commandTester->execute([
+            'composer-json' => dirname(__DIR__, 2) . '/fixtures/noUnknownEnumSymbols/composer.json',
+        ]);
+
+        self::assertSame(Command::SUCCESS, $this->commandTester->getStatusCode());
+        self::assertStringContainsString(
+            'There were no unknown symbols found.',
+            $this->commandTester->getDisplay()
+        );
+    }
 }
diff --git a/test/ComposerRequireCheckerTest/NodeVisitor/DefinedSymbolCollectorTest.php b/test/ComposerRequireCheckerTest/NodeVisitor/DefinedSymbolCollectorTest.php
index 4df61516..c76c4bfe 100644
--- a/test/ComposerRequireCheckerTest/NodeVisitor/DefinedSymbolCollectorTest.php
+++ b/test/ComposerRequireCheckerTest/NodeVisitor/DefinedSymbolCollectorTest.php
@@ -12,6 +12,7 @@
 use PhpParser\Node\Scalar\String_;
 use PhpParser\Node\Stmt\Class_;
 use PhpParser\Node\Stmt\Const_;
+use PhpParser\Node\Stmt\Enum_;
 use PhpParser\Node\Stmt\Function_;
 use PhpParser\Node\Stmt\Interface_;
 use PhpParser\Node\Stmt\Trait_;
@@ -74,6 +75,14 @@ public function testRecordClassDefinition(): void
         $this->assertContains('Foo', $this->collector->getDefinedSymbols());
     }
 
+    public function testRecordEnumDefinition(): void
+    {
+        $node = new Enum_(new Identifier('Foo'));
+        $this->traverser->traverse([$node]);
+
+        $this->assertContains('Foo', $this->collector->getDefinedSymbols());
+    }
+
     public function testRecordInterfaceDefinition(): void
     {
         $node = new Interface_(new Identifier('Foo'));
diff --git a/test/fixtures/noUnknownEnumSymbols/composer.json b/test/fixtures/noUnknownEnumSymbols/composer.json
new file mode 100644
index 00000000..65aeb1d4
--- /dev/null
+++ b/test/fixtures/noUnknownEnumSymbols/composer.json
@@ -0,0 +1,11 @@
+{
+    "name": "example/library",
+    "require": {
+        "php": "8.1.*"
+    },
+    "autoload": {
+        "psr-4": {
+            "Example\\Library\\": "src/"
+        }
+    }
+}
diff --git a/test/fixtures/noUnknownEnumSymbols/src/SomeClass.php b/test/fixtures/noUnknownEnumSymbols/src/SomeClass.php
new file mode 100644
index 00000000..0f8672e8
--- /dev/null
+++ b/test/fixtures/noUnknownEnumSymbols/src/SomeClass.php
@@ -0,0 +1,10 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Example\Library;
+
+final class SomeClass
+{
+    public readonly SomeEnum $enum = SomeEnum::A;
+}
diff --git a/test/fixtures/noUnknownEnumSymbols/src/SomeEnum.php b/test/fixtures/noUnknownEnumSymbols/src/SomeEnum.php
new file mode 100644
index 00000000..a9d280b7
--- /dev/null
+++ b/test/fixtures/noUnknownEnumSymbols/src/SomeEnum.php
@@ -0,0 +1,11 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Example\Library;
+
+enum SomeEnum
+{
+    case A;
+    case B;
+}
diff --git a/test/fixtures/noUnknownEnumSymbols/vendor/composer/installed.json b/test/fixtures/noUnknownEnumSymbols/vendor/composer/installed.json
new file mode 100644
index 00000000..fe51488c
--- /dev/null
+++ b/test/fixtures/noUnknownEnumSymbols/vendor/composer/installed.json
@@ -0,0 +1 @@
+[]