diff --git a/src/Plugin/Generator/GrpcGenerator.php b/src/Plugin/Generator/GrpcGenerator.php
index ec2e5db..72c4bf9 100644
--- a/src/Plugin/Generator/GrpcGenerator.php
+++ b/src/Plugin/Generator/GrpcGenerator.php
@@ -34,8 +34,15 @@ public function generateClient(Parser\ServiceDescriptor $service): PhpNamespace
         $classType = new ClassType($name)
             ->setFinal()
             ->setReadOnly()
-            ->addComment('@api')
-            ->addComment($service->comment !== null ? "\n{$service->comment}" : '');
+            ->addComment('@api');
+
+        if ($service->options?->deprecated === true) {
+            $classType = $classType->addComment('@deprecated');
+        }
+
+        if ($service->comment !== null) {
+            $classType = $classType->addComment("\n{$service->comment}");
+        }
 
         $namespace->add($classType);
 
@@ -59,6 +66,12 @@ public function generateClient(Parser\ServiceDescriptor $service): PhpNamespace
                 ->addMethod(Naming::camelCase($method->name))
                 ->setPublic();
 
+            if ($method->options?->deprecated === true) {
+                $namespace->addUse('Deprecated');
+
+                $classMethod = $classMethod->addAttribute('Deprecated');
+            }
+
             if ($method->comment !== null) {
                 $classMethod->addComment((string) $method->comment);
             }
@@ -198,8 +211,15 @@ public function generateServer(Parser\ServiceDescriptor $service): PhpNamespace
         $namespace = $this->namespacer->create($service->path);
 
         $interfaceType = new InterfaceType(\sprintf('%sServer', Naming::pascalCase($service->name)))
-            ->addComment('@api')
-            ->addComment($service->comment !== null ? "\n{$service->comment}" : '');
+            ->addComment('@api');
+
+        if ($service->options?->deprecated === true) {
+            $interfaceType = $interfaceType->addComment('@deprecated');
+        }
+
+        if ($service->comment !== null) {
+            $interfaceType = $interfaceType->addComment("\n{$service->comment}");
+        }
 
         $namespace->add($interfaceType);
 
@@ -224,6 +244,12 @@ public function generateServer(Parser\ServiceDescriptor $service): PhpNamespace
                 ->addMethod(Naming::camelCase($method->name))
                 ->setPublic();
 
+            if ($method->options?->deprecated === true) {
+                $namespace->addUse('Deprecated');
+
+                $interfaceMethod = $interfaceMethod->addAttribute('Deprecated');
+            }
+
             if ($method->comment !== null) {
                 $interfaceMethod->addComment((string) $method->comment);
             }
diff --git a/src/Plugin/Generator/ProtoGenerator.php b/src/Plugin/Generator/ProtoGenerator.php
index 24f3255..ebb3ef0 100644
--- a/src/Plugin/Generator/ProtoGenerator.php
+++ b/src/Plugin/Generator/ProtoGenerator.php
@@ -54,15 +54,23 @@ public function generateEnum(Parser\EnumDescriptor $enum): PhpNamespace
         ));
 
         $enumType = new EnumType($enumName)
-            ->addComment('@api')
-            ->addComment($enum->comment !== null ? "\n{$enum->comment}" : '')
             ->setType('int')
             ->setCases(array_map(
                 static fn(Parser\EnumCaseDescriptor $case) => new EnumCase(Naming::secureEnumCase($case->name))
                     ->setValue($case->value)
-                    ->setComment((string) $case->comment),
+                    ->addComment(($deprecated = $case->options?->deprecated) === true ? '@deprecated' : '')
+                    ->addComment(($deprecated === true ? "\n" : '') . (string) $case->comment),
                 $enum->cases,
-            ));
+            ))
+            ->addComment('@api');
+
+        if ($enum->options?->deprecated === true) {
+            $enumType = $enumType->addComment('@deprecated');
+        }
+
+        if ($enum->comment !== null) {
+            $enumType = $enumType->addComment("\n{$enum->comment}");
+        }
 
         $namespace->add($enumType);
 
@@ -127,9 +135,17 @@ private function generateMessage(PhpNamespace $namespace, string $className, Par
         $classType = new ClassType($className)
             ->setFinal()
             ->setReadOnly()
-            ->setImplements($implements)
-            ->addComment('@api')
-            ->addComment($message->comment !== null ? "\n{$message->comment}" : '');
+            ->setImplements($implements);
+
+        $classType = $classType->addComment('@api');
+
+        if ($message->options?->deprecated === true) {
+            $classType = $classType->addComment('@deprecated');
+        }
+
+        if ($message->comment !== null) {
+            $classType = $classType->addComment("\n{$message->comment}");
+        }
 
         $namespace->add($classType);
 
@@ -226,6 +242,10 @@ private function generateMessage(PhpNamespace $namespace, string $className, Par
                 ->setNullable($nullable)
                 ->setDefaultValue($repeated ? [] : $default);
 
+            if ($field->options?->deprecated === true) {
+                $parameter->addComment('@deprecated');
+            }
+
             if ($repeated || $field->comment !== null || $type->isMap) {
                 $docType = $type->resolvedType();
 
diff --git a/src/Plugin/Parser.php b/src/Plugin/Parser.php
index e93280e..78c893a 100644
--- a/src/Plugin/Parser.php
+++ b/src/Plugin/Parser.php
@@ -245,6 +245,7 @@ private static function parseServices(array $descriptors, CommentExtractor $comm
                 $name,
                 self::parseServiceMethods($descriptor->method, $comments->clone($commentPath)),
                 $comments->extract($commentPath),
+                $descriptor->options,
             );
         }
 
@@ -273,6 +274,7 @@ private static function parseServiceMethods(
                 clientStreaming: $descriptor->clientStreaming ?? false,
                 serverStreaming: $descriptor->serverStreaming ?? false,
                 comment: $comments->extract(\sprintf('%d.%d', Comments::SERVICE_METHOD_COMMENT_PATH, $idx)),
+                options: $descriptor->options,
             );
         }
 
diff --git a/src/Plugin/Parser/ServiceDescriptor.php b/src/Plugin/Parser/ServiceDescriptor.php
index 9ed62d7..6c417da 100644
--- a/src/Plugin/Parser/ServiceDescriptor.php
+++ b/src/Plugin/Parser/ServiceDescriptor.php
@@ -4,6 +4,7 @@
 
 namespace Thesis\Protoc\Plugin\Parser;
 
+use Google\Protobuf\ServiceOptions;
 use Thesis\Protoc\Plugin\Comment;
 
 /**
@@ -19,5 +20,6 @@ public function __construct(
         public string $path,
         public array $methods,
         public ?Comment $comment = null,
+        public ?ServiceOptions $options = null,
     ) {}
 }
diff --git a/src/Plugin/Parser/ServiceMethodDescriptor.php b/src/Plugin/Parser/ServiceMethodDescriptor.php
index f67ac23..e580c6f 100644
--- a/src/Plugin/Parser/ServiceMethodDescriptor.php
+++ b/src/Plugin/Parser/ServiceMethodDescriptor.php
@@ -4,6 +4,7 @@
 
 namespace Thesis\Protoc\Plugin\Parser;
 
+use Google\Protobuf\MethodOptions;
 use Thesis\Protoc\Plugin\Comment;
 
 /**
@@ -20,6 +21,7 @@ public function __construct(
         public bool $clientStreaming,
         public bool $serverStreaming,
         public ?Comment $comment = null,
+        public ?MethodOptions $options = null,
     ) {
         $this->bidirectionalStreaming = $this->clientStreaming && $this->serverStreaming;
     }
diff --git a/tests/fixtures/deprecated/deprecated.proto b/tests/fixtures/deprecated/deprecated.proto
new file mode 100644
index 0000000..ac8b4b3
--- /dev/null
+++ b/tests/fixtures/deprecated/deprecated.proto
@@ -0,0 +1,38 @@
+syntax = "proto3";
+
+package test.api.v1;
+
+// Type is deprecated.
+enum Type {
+    option deprecated = true;
+
+    // Case is deprecated.
+    TYPE_UNSPECIFIED = 0 [deprecated = true];
+    TYPE_PROTO3 = 1;
+}
+
+// Request is deprecated.
+message Request {
+    option deprecated = true;
+
+    // Field is deprecated.
+    string name = 1 [deprecated = true];
+
+    // Nested message is also deprecated.
+    message NestedRequest {
+        option deprecated = true;
+
+        // Nested field is deprecated too.
+        string name = 1 [deprecated = true];
+    }
+}
+
+// Service is deprecated.
+service EchoService {
+    option deprecated = true;
+
+    // Rpc is also deprecated.
+    rpc Echo(Request) returns (Request) {
+        option deprecated = true;
+    };
+}
diff --git a/tests/snapshots/deprecated/Test/Api/V1/DeprecatedDescriptorRegistry.php b/tests/snapshots/deprecated/Test/Api/V1/DeprecatedDescriptorRegistry.php
new file mode 100644
index 0000000..56ff089
--- /dev/null
+++ b/tests/snapshots/deprecated/Test/Api/V1/DeprecatedDescriptorRegistry.php
@@ -0,0 +1,48 @@
+<?php
+
+/**
+ * Code generated by thesis/protoc-plugin. DO NOT EDIT.
+ * Versions:
+ *   thesis/protoc-plugin — v0.1.x-dev
+ *   protoc               — v6.32.1
+ * Source: deprecated.proto
+ */
+
+declare(strict_types=1);
+
+namespace Test\Api\V1;
+
+use Override;
+use Thesis\Protobuf\Registry;
+use Thesis\Protobuf\Registry\File;
+
+/**
+ * @api
+ */
+final readonly class DeprecatedDescriptorRegistry implements Registry\Registrar
+{
+    private const string DESCRIPTOR_BUFFER = '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';
+
+    #[Override]
+    public function register(Registry\Pool $pool): void
+    {
+        $pool->add(Registry\Descriptor::base64(self::DESCRIPTOR_BUFFER), new File(
+            name: 'deprecated.proto',
+            messages: [
+                new File\MessageDescriptor('test.api.v1.Request', \Test\Api\V1\Request::class),
+                new File\MessageDescriptor('test.api.v1.Request.NestedRequest', \Test\Api\V1\Request\NestedRequest::class),
+            ],
+            enums: [
+                new File\EnumDescriptor('test.api.v1.Type', \Test\Api\V1\Type::class),
+            ],
+            services: [
+                new File\ServiceDescriptor(
+                    name: 'test.api.v1.EchoService',
+                    methods: [
+                        new File\MethodDescriptor('Echo', false, false),
+                    ],
+                ),
+            ],
+        ));
+    }
+}
diff --git a/tests/snapshots/deprecated/Test/Api/V1/EchoServiceClient.php b/tests/snapshots/deprecated/Test/Api/V1/EchoServiceClient.php
new file mode 100644
index 0000000..0b17193
--- /dev/null
+++ b/tests/snapshots/deprecated/Test/Api/V1/EchoServiceClient.php
@@ -0,0 +1,59 @@
+<?php
+
+/**
+ * Code generated by thesis/protoc-plugin. DO NOT EDIT.
+ * Versions:
+ *   thesis/protoc-plugin — v0.1.x-dev
+ *   protoc               — v6.32.1
+ * Source: deprecated.proto
+ */
+
+declare(strict_types=1);
+
+namespace Test\Api\V1;
+
+use Amp\Cancellation;
+use Amp\NullCancellation;
+use Deprecated;
+use Thesis\Grpc\Client;
+use Thesis\Grpc\Exception\ClientStreamIsClosed;
+use Thesis\Grpc\InvokeError;
+use Thesis\Grpc\Metadata;
+
+/**
+ * @api
+ * @deprecated
+ *
+ * Service is deprecated.
+ */
+final readonly class EchoServiceClient
+{
+    public function __construct(
+        private Client $client,
+    ) {}
+
+    /**
+     * Rpc is also deprecated.
+     * @throws ClientStreamIsClosed
+     * @throws InvokeError
+     */
+    #[Deprecated]
+    public function echo(
+        \Test\Api\V1\Request $request,
+        Metadata $md = new Metadata(),
+        Cancellation $cancellation = new NullCancellation(),
+    ): \Test\Api\V1\Request {
+        /** @var Client\Invoke<\Test\Api\V1\Request, \Test\Api\V1\Request> $invoke */
+        $invoke = new Client\Invoke(
+            method: '/test.api.v1.EchoService/Echo',
+            type: \Test\Api\V1\Request::class,
+        );
+
+        return $this->client->invoke(
+            request: $request,
+            invoke: $invoke,
+            md: $md,
+            cancellation: $cancellation,
+        );
+    }
+}
diff --git a/tests/snapshots/deprecated/Test/Api/V1/EchoServiceServer.php b/tests/snapshots/deprecated/Test/Api/V1/EchoServiceServer.php
new file mode 100644
index 0000000..d59b564
--- /dev/null
+++ b/tests/snapshots/deprecated/Test/Api/V1/EchoServiceServer.php
@@ -0,0 +1,36 @@
+<?php
+
+/**
+ * Code generated by thesis/protoc-plugin. DO NOT EDIT.
+ * Versions:
+ *   thesis/protoc-plugin — v0.1.x-dev
+ *   protoc               — v6.32.1
+ * Source: deprecated.proto
+ */
+
+declare(strict_types=1);
+
+namespace Test\Api\V1;
+
+use Amp\Cancellation;
+use Deprecated;
+use Thesis\Grpc\Metadata;
+
+/**
+ * @api
+ * @deprecated
+ *
+ * Service is deprecated.
+ */
+interface EchoServiceServer
+{
+    /**
+     * Rpc is also deprecated.
+     */
+    #[Deprecated]
+    public function echo(
+        \Test\Api\V1\Request $request,
+        Metadata $md,
+        Cancellation $cancellation,
+    ): \Test\Api\V1\Request;
+}
diff --git a/tests/snapshots/deprecated/Test/Api/V1/EchoServiceServerRegistry.php b/tests/snapshots/deprecated/Test/Api/V1/EchoServiceServerRegistry.php
new file mode 100644
index 0000000..8e1fbe5
--- /dev/null
+++ b/tests/snapshots/deprecated/Test/Api/V1/EchoServiceServerRegistry.php
@@ -0,0 +1,38 @@
+<?php
+
+/**
+ * Code generated by thesis/protoc-plugin. DO NOT EDIT.
+ * Versions:
+ *   thesis/protoc-plugin — v0.1.x-dev
+ *   protoc               — v6.32.1
+ * Source: deprecated.proto
+ */
+
+declare(strict_types=1);
+
+namespace Test\Api\V1;
+
+use Override;
+use Thesis\Grpc\Server;
+
+/**
+ * @api
+ */
+final readonly class EchoServiceServerRegistry implements Server\ServiceRegistry
+{
+    public function __construct(
+        private \Test\Api\V1\EchoServiceServer $server,
+    ) {}
+
+    #[Override]
+    public function services(): iterable
+    {
+        yield new Server\Service('test.api.v1.EchoService', [
+            new Server\Rpc(
+                new Server\Handle('Echo', \Test\Api\V1\Request::class),
+                new Server\UnaryHandler($this->server->echo(...)),
+                Server\RpcType::Unary,
+            ),
+        ]);
+    }
+}
diff --git a/tests/snapshots/deprecated/Test/Api/V1/Request.php b/tests/snapshots/deprecated/Test/Api/V1/Request.php
new file mode 100644
index 0000000..c9e85a9
--- /dev/null
+++ b/tests/snapshots/deprecated/Test/Api/V1/Request.php
@@ -0,0 +1,33 @@
+<?php
+
+/**
+ * Code generated by thesis/protoc-plugin. DO NOT EDIT.
+ * Versions:
+ *   thesis/protoc-plugin — v0.1.x-dev
+ *   protoc               — v6.32.1
+ * Source: deprecated.proto
+ */
+
+declare(strict_types=1);
+
+namespace Test\Api\V1;
+
+use Thesis\Protobuf\Reflection;
+
+/**
+ * @api
+ * @deprecated
+ *
+ * Request is deprecated.
+ */
+final readonly class Request
+{
+    /**
+     * @param string $name Field is deprecated.
+     */
+    public function __construct(
+        /** @deprecated */
+        #[Reflection\Field(1, Reflection\StringT::T)]
+        public string $name = '',
+    ) {}
+}
diff --git a/tests/snapshots/deprecated/Test/Api/V1/Request/NestedRequest.php b/tests/snapshots/deprecated/Test/Api/V1/Request/NestedRequest.php
new file mode 100644
index 0000000..23860b2
--- /dev/null
+++ b/tests/snapshots/deprecated/Test/Api/V1/Request/NestedRequest.php
@@ -0,0 +1,33 @@
+<?php
+
+/**
+ * Code generated by thesis/protoc-plugin. DO NOT EDIT.
+ * Versions:
+ *   thesis/protoc-plugin — v0.1.x-dev
+ *   protoc               — v6.32.1
+ * Source: deprecated.proto
+ */
+
+declare(strict_types=1);
+
+namespace Test\Api\V1\Request;
+
+use Thesis\Protobuf\Reflection;
+
+/**
+ * @api
+ * @deprecated
+ *
+ * Nested message is also deprecated.
+ */
+final readonly class NestedRequest
+{
+    /**
+     * @param string $name Nested field is deprecated too.
+     */
+    public function __construct(
+        /** @deprecated */
+        #[Reflection\Field(1, Reflection\StringT::T)]
+        public string $name = '',
+    ) {}
+}
diff --git a/tests/snapshots/deprecated/Test/Api/V1/Type.php b/tests/snapshots/deprecated/Test/Api/V1/Type.php
new file mode 100644
index 0000000..055d7b8
--- /dev/null
+++ b/tests/snapshots/deprecated/Test/Api/V1/Type.php
@@ -0,0 +1,30 @@
+<?php
+
+/**
+ * Code generated by thesis/protoc-plugin. DO NOT EDIT.
+ * Versions:
+ *   thesis/protoc-plugin — v0.1.x-dev
+ *   protoc               — v6.32.1
+ * Source: deprecated.proto
+ */
+
+declare(strict_types=1);
+
+namespace Test\Api\V1;
+
+/**
+ * @api
+ * @deprecated
+ *
+ * Type is deprecated.
+ */
+enum Type: int
+{
+    /**
+     * @deprecated
+     *
+     * Case is deprecated.
+     */
+    case TYPE_UNSPECIFIED = 0;
+    case TYPE_PROTO3 = 1;
+}
diff --git a/tests/snapshots/deprecated/Test/Api/V1/autoload.metadata.php b/tests/snapshots/deprecated/Test/Api/V1/autoload.metadata.php
new file mode 100644
index 0000000..134c295
--- /dev/null
+++ b/tests/snapshots/deprecated/Test/Api/V1/autoload.metadata.php
@@ -0,0 +1,14 @@
+<?php
+
+/**
+ * Code generated by thesis/protoc-plugin. DO NOT EDIT.
+ * Versions:
+ *   thesis/protoc-plugin — v0.1.x-dev
+ *   protoc               — v6.32.1
+ */
+
+declare(strict_types=1);
+
+\Thesis\Protobuf\Registry\Pool::get()->register(
+    new \Thesis\Protobuf\Registry\OnceRegistrar(new \Test\Api\V1\DeprecatedDescriptorRegistry()),
+);