diff --git a/composer.json b/composer.json
index e7739754..4f4d4aa8 100644
--- a/composer.json
+++ b/composer.json
@@ -32,8 +32,8 @@
         "react/event-loop": "^1.0 || ^0.5",
         "react/promise": "^2.3 || ^1.2.1",
         "react/promise-stream": "^1.1",
-        "react/socket": "^1.1",
-        "react/stream": "^1.0 || ^0.7.5",
+        "react/socket": "^1.6",
+        "react/stream": "^1.1",
         "ringcentral/psr7": "^1.2"
     },
     "require-dev": {
diff --git a/examples/99-server-benchmark-download.php b/examples/99-server-benchmark-download.php
index 536f4515..5fdd55c9 100644
--- a/examples/99-server-benchmark-download.php
+++ b/examples/99-server-benchmark-download.php
@@ -119,7 +119,7 @@ public function getSize()
     );
 });
 
-$socket = new \React\Socket\Server(isset($argv[1]) ? $argv[1] : '0.0.0.0:0', $loop, array('tcp' => array('backlog' => 511)));
+$socket = new \React\Socket\Server(isset($argv[1]) ? $argv[1] : '0.0.0.0:0', $loop);
 $server->listen($socket);
 
 echo 'Listening on ' . str_replace('tcp:', 'http:', $socket->getAddress()) . PHP_EOL;
diff --git a/src/Io/ChunkedDecoder.php b/src/Io/ChunkedDecoder.php
index 45642a63..2f58f42b 100644
--- a/src/Io/ChunkedDecoder.php
+++ b/src/Io/ChunkedDecoder.php
@@ -123,7 +123,7 @@ public function handleData($data)
                 }
 
                 $this->chunkSize = @\hexdec($hexValue);
-                if (\dechex($this->chunkSize) !== $hexValue) {
+                if (!\is_int($this->chunkSize) || \dechex($this->chunkSize) !== $hexValue) {
                     $this->handleError(new Exception($hexValue . ' is not a valid hexadecimal number'));
                     return;
                 }