diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1f82794..a80a065 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,6 +11,7 @@ jobs:
     strategy:
       matrix:
         php:
+          - 8.4
           - 8.3
           - 8.2
           - 8.1
diff --git a/composer.json b/composer.json
index 3f824db..ed9e822 100644
--- a/composer.json
+++ b/composer.json
@@ -12,15 +12,15 @@
     ],
     "require": {
         "php": ">=5.3",
-        "react/promise": "^3 || ^2.1 || ^1.2",
-        "react/socket": "^1.12"
+        "react/promise": "^3.2 || ^2.1 || ^1.2",
+        "react/socket": "^1.16"
     },
     "require-dev": {
         "clue/connection-manager-extra": "^1.3",
         "phpunit/phpunit": "^9.6 || ^8.5 || ^5.7 || ^4.8.36",
-        "react/async": "^4 || ^3 || ^2",
+        "react/async": "^4.3 || ^3 || ^2",
         "react/event-loop": "^1.2",
-        "react/http": "^1.6"
+        "react/http": "^1.11"
     },
     "autoload": {
         "psr-4": {
diff --git a/src/Client.php b/src/Client.php
index fb689c8..5d4e415 100644
--- a/src/Client.php
+++ b/src/Client.php
@@ -34,8 +34,12 @@ final class Client implements ConnectorInterface
     public function __construct(
         #[\SensitiveParameter]
         $socksUri,
-        ConnectorInterface $connector = null
+        $connector = null
     ) {
+        if ($connector !== null && !$connector instanceof ConnectorInterface) { // manual type check to support legacy PHP < 7.1
+            throw new InvalidArgumentException('Argument #2 ($connector) expected null|React\Socket\ConnectorInterface');
+        }
+
         // support `sockss://` scheme for SOCKS over TLS
         // support `socks+unix://` scheme for Unix domain socket (UDS) paths
         if (preg_match('/^(socks(?:5|4)?)(s|\+unix):\/\/(.*?@)?(.+?)$/', $socksUri, $match)) {
diff --git a/src/Server.php b/src/Server.php
index 2d89139..3309635 100644
--- a/src/Server.php
+++ b/src/Server.php
@@ -58,11 +58,18 @@ final class Server
      * @param null|array|callable $auth
      */
     public function __construct(
-        LoopInterface $loop = null,
-        ConnectorInterface $connector = null,
+        $loop = null,
+        $connector = null,
         #[\SensitiveParameter]
         $auth = null
     ) {
+        if ($loop !== null && !$loop instanceof LoopInterface) { // manual type check to support legacy PHP < 7.1
+            throw new \InvalidArgumentException('Argument #1 ($loop) expected null|React\EventLoop\LoopInterface');
+        }
+        if ($connector !== null && !$connector instanceof ConnectorInterface) { // manual type check to support legacy PHP < 7.1
+            throw new \InvalidArgumentException('Argument #2 ($connector) expected null|React\Socket\ConnectorInterface');
+        }
+
         if (\is_array($auth)) {
             // wrap authentication array in authentication callback
             $this->auth = function (
diff --git a/tests/ClientTest.php b/tests/ClientTest.php
index b11c1ba..4b81714 100644
--- a/tests/ClientTest.php
+++ b/tests/ClientTest.php
@@ -121,6 +121,12 @@ public function testInvalidProtocolVersion()
         $this->client = new Client('socks3://127.0.0.1:9050', $this->connector);
     }
 
+    public function testCtorThrowsForInvalidConnector()
+    {
+        $this->setExpectedException('InvalidArgumentException', 'Argument #2 ($connector) expected null|React\Socket\ConnectorInterface');
+        new Client('127.0.0.1:1080', 'connector');
+    }
+
     public function testCreateWillConnectToProxy()
     {
         $promise = new Promise(function () { });
diff --git a/tests/ServerTest.php b/tests/ServerTest.php
index 6f71410..274d558 100644
--- a/tests/ServerTest.php
+++ b/tests/ServerTest.php
@@ -68,6 +68,18 @@ public function testConstructorWithStaticAuthArray()
         ));
     }
 
+    public function testConstructorThrowsForInvalidLoop()
+    {
+        $this->setExpectedException('InvalidArgumentException', 'Argument #1 ($loop) expected null|React\EventLoop\LoopInterface');
+        new Server('loop');
+    }
+
+    public function testConstructorThrowsForInvalidConnector()
+    {
+        $this->setExpectedException('InvalidArgumentException', 'Argument #2 ($connector) expected null|React\Socket\ConnectorInterface');
+        new Server(null, 'connector');
+    }
+
     public function testConstructorWithInvalidAuthenticatorThrows()
     {
         $this->setExpectedException("InvalidArgumentException");