diff --git a/composer.json b/composer.json
index 50c59e9..c5ed610 100644
--- a/composer.json
+++ b/composer.json
@@ -12,9 +12,10 @@
     "require": {
         "php": ">=7.4",
         "ext-json": "*",
-        "symfony/polyfill-php80": "^1.22",
+        "google/common-protos": "^3.1",
         "google/protobuf": "^3.7",
-        "spiral/roadrunner": "^2.0"
+        "spiral/roadrunner": "^2.0",
+        "symfony/polyfill-php80": "^1.22"
     },
     "require-dev": {
         "jetbrains/phpstorm-attributes": "^1.0",
diff --git a/src/Server.php b/src/Server.php
index 5694619..fa64f90 100644
--- a/src/Server.php
+++ b/src/Server.php
@@ -12,6 +12,7 @@
 namespace Spiral\RoadRunner\GRPC;
 
 use Google\Protobuf\Any;
+use Google\Rpc\Status;
 use Spiral\RoadRunner\GRPC\Exception\GRPCException;
 use Spiral\RoadRunner\GRPC\Exception\GRPCExceptionInterface;
 use Spiral\RoadRunner\GRPC\Exception\NotFoundException;
@@ -148,7 +149,7 @@ public function serve(Worker $worker = null, callable $finalize = null): void
 
                 $this->workerSend($worker, $answerBody, $answerHeaders);
             } catch (GRPCExceptionInterface $e) {
-                $this->workerError($worker, $this->packError($e));
+                $this->workerGrpcError($worker, $e);
             } catch (\Throwable $e) {
                 $this->workerError($worker, $this->isDebugMode() ? (string)$e : $e->getMessage());
             } finally {
@@ -171,37 +172,32 @@ public function serve(Worker $worker = null, callable $finalize = null): void
      */
     protected function invoke(string $service, string $method, ContextInterface $context, string $body): string
     {
-        if (! isset($this->services[$service])) {
+        if (!isset($this->services[$service])) {
             throw NotFoundException::create("Service `{$service}` not found.", StatusCode::NOT_FOUND);
         }
 
         return $this->services[$service]->invoke($method, $context, $body);
     }
 
-    /**
-     * Packs exception message and code into one string.
-     *
-     * Internal agreement:
-     *
-     * Details will be sent as serialized google.protobuf.Any messages after
-     * code and exception message separated with |:| delimiter.
-     *
-     * @param GRPCExceptionInterface $e
-     * @return string
-     */
-    private function packError(GRPCExceptionInterface $e): string
+    private function workerGrpcError(Worker $worker, GRPCExceptionInterface $e): void
     {
-        $data = [$e->getCode(), $e->getMessage()];
-
-        foreach ($e->getDetails() as $detail) {
-            $anyMessage = new Any();
-
-            $anyMessage->pack($detail);
-
-            $data[] = $anyMessage->serializeToString();
-        }
-
-        return \implode('|:|', $data);
+        $status = new Status([
+            'code' => $e->getCode(),
+            'message' => $e->getMessage(),
+            'details' => \array_map(
+                static function ($detail) {
+                    $message = new Any();
+                    $message->pack($detail);
+
+                    return $message;
+                },
+                $e->getDetails()
+            ),
+        ]);
+
+        $this->workerSend($worker, '', Json::encode([
+            'error' => \base64_encode($status->serializeToString()),
+        ]));
     }
 
     /**
diff --git a/tests/ServerTest.php b/tests/ServerTest.php
index 9c15472..7cd0519 100644
--- a/tests/ServerTest.php
+++ b/tests/ServerTest.php
@@ -17,7 +17,7 @@
 use Service\TestInterface;
 use Spiral\Goridge\Frame;
 use Spiral\Goridge\RelayInterface;
-use Spiral\GRPC\Server;
+use Spiral\RoadRunner\GRPC\Server;
 use Spiral\RoadRunner\GRPC\Tests\Stub\TestService;
 use Spiral\RoadRunner\Worker;
 
@@ -67,7 +67,9 @@ public function testNotFound(): void
         );
 
         $relay->shouldReceive('send')->once()->withArgs(function (Frame $frame) {
-            return $frame->payload === '5|:|Service `service.Test2` not found.';
+            $error = base64_decode(json_decode($frame->payload, true)['error']);
+
+            return str_contains($error, 'Service `service.Test2` not found.');
         });
 
         $this->server->serve(
@@ -87,7 +89,9 @@ public function testNotFound2(): void
         );
 
         $relay->shouldReceive('send')->once()->withArgs(function (Frame $frame) {
-            return $frame->payload === '5|:|Method `Echo2` not found in service `service.Test`.';
+            $error = base64_decode(json_decode($frame->payload, true)['error']);
+
+            return str_contains($error, 'Method `Echo2` not found in service `service.Test`.');
         });
 
         $this->server->serve(