diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 65fe5d47..5da29cab 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,10 +7,12 @@ on:
 jobs:
   PHPUnit:
     name: PHPUnit (PHP ${{ matrix.php }})
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     strategy:
       matrix:
         php:
+          - 8.5
+          - 8.4
           - 8.3
           - 8.2
           - 8.1
@@ -39,13 +41,13 @@ jobs:
 
   PHPUnit-macOS:
     name: PHPUnit (macOS)
-    runs-on: macos-12
+    runs-on: macos-14
     continue-on-error: true
     steps:
       - uses: actions/checkout@v4
       - uses: shivammathur/setup-php@v2
         with:
-          php-version: 8.2
+          php-version: 8.5
           coverage: xdebug
           ini-file: development
       - run: composer install
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a810eff4..3064849c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,18 @@
 # Changelog
 
+## 1.14.0 (2025-11-18)
+
+*   Feature: Improve PHP 8.5+ support by avoiding deprecated `setAccessible()` calls.
+    (#238 by @W0rma and #243 by @WyriHaximus)
+
+*   Improve test suite, update test environment and increase query count in excessive TCP query tests.
+    (#239 and #240 by @WyriHaximus)
+
+## 1.13.0 (2024-06-13)
+
+*   Feature: Improve PHP 8.4+ support by avoiding implicitly nullable type declarations.
+    (#224 by @WyriHaximus)
+
 ## 1.12.0 (2023-11-29)
 
 *   Feature: Full PHP 8.3 compatibility.
diff --git a/README.md b/README.md
index 3b3cf022..b6e8fe4c 100644
--- a/README.md
+++ b/README.md
@@ -410,7 +410,7 @@ This project follows [SemVer](https://semver.org/).
 This will install the latest supported version:
 
 ```bash
-composer require react/dns:^1.12
+composer require react/dns:^1.14
 ```
 
 See also the [CHANGELOG](CHANGELOG.md) for details about version upgrades.
diff --git a/composer.json b/composer.json
index de22b26f..4fe5c0da 100644
--- a/composer.json
+++ b/composer.json
@@ -29,12 +29,12 @@
         "php": ">=5.3.0",
         "react/cache": "^1.0 || ^0.6 || ^0.5",
         "react/event-loop": "^1.2",
-        "react/promise": "^3.0 || ^2.7 || ^1.2.1"
+        "react/promise": "^3.2 || ^2.7 || ^1.2.1"
     },
     "require-dev": {
         "phpunit/phpunit": "^9.6 || ^5.7 || ^4.8.36",
-        "react/async": "^4 || ^3 || ^2",
-        "react/promise-timer": "^1.9"
+        "react/async": "^4.3 || ^3 || ^2",
+        "react/promise-timer": "^1.11"
     },
     "autoload": {
         "psr-4": {
diff --git a/src/Query/RetryExecutor.php b/src/Query/RetryExecutor.php
index 880609b2..11c123b8 100644
--- a/src/Query/RetryExecutor.php
+++ b/src/Query/RetryExecutor.php
@@ -50,7 +50,9 @@ public function tryQuery(Query $query, $retries)
                 // avoid garbage references by replacing all closures in call stack.
                 // what a lovely piece of code!
                 $r = new \ReflectionProperty('Exception', 'trace');
-                $r->setAccessible(true);
+                if (\PHP_VERSION_ID < 80100) {
+                    $r->setAccessible(true);
+                }
                 $trace = $r->getValue($e);
 
                 // Exception trace arguments are not available on some PHP 7.4 installs
diff --git a/src/Query/TcpTransportExecutor.php b/src/Query/TcpTransportExecutor.php
index bfaedbae..669fd012 100644
--- a/src/Query/TcpTransportExecutor.php
+++ b/src/Query/TcpTransportExecutor.php
@@ -134,7 +134,7 @@ class TcpTransportExecutor implements ExecutorInterface
      * @param string         $nameserver
      * @param ?LoopInterface $loop
      */
-    public function __construct($nameserver, LoopInterface $loop = null)
+    public function __construct($nameserver, $loop = null)
     {
         if (\strpos($nameserver, '[') === false && \substr_count($nameserver, ':') >= 2 && \strpos($nameserver, '://') === false) {
             // several colons, but not enclosed in square brackets => enclose IPv6 address in square brackets
@@ -146,6 +146,10 @@ public function __construct($nameserver, LoopInterface $loop = null)
             throw new \InvalidArgumentException('Invalid nameserver address given');
         }
 
+        if ($loop !== null && !$loop instanceof LoopInterface) { // manual type check to support legacy PHP < 7.1
+            throw new \InvalidArgumentException('Argument #2 ($loop) expected null|React\EventLoop\LoopInterface');
+        }
+
         $this->nameserver = 'tcp://' . $parts['host'] . ':' . (isset($parts['port']) ? $parts['port'] : 53);
         $this->loop = $loop ?: Loop::get();
         $this->parser = new Parser();
diff --git a/src/Query/TimeoutExecutor.php b/src/Query/TimeoutExecutor.php
index 06c51b15..b61fea6d 100644
--- a/src/Query/TimeoutExecutor.php
+++ b/src/Query/TimeoutExecutor.php
@@ -12,8 +12,17 @@ final class TimeoutExecutor implements ExecutorInterface
     private $loop;
     private $timeout;
 
-    public function __construct(ExecutorInterface $executor, $timeout, LoopInterface $loop = null)
+    /**
+     * @param ExecutorInterface $executor
+     * @param float $timeout
+     * @param ?LoopInterface $loop
+     */
+    public function __construct(ExecutorInterface $executor, $timeout, $loop = null)
     {
+        if ($loop !== null && !$loop instanceof LoopInterface) { // manual type check to support legacy PHP < 7.1
+            throw new \InvalidArgumentException('Argument #3 ($loop) expected null|React\EventLoop\LoopInterface');
+        }
+
         $this->executor = $executor;
         $this->loop = $loop ?: Loop::get();
         $this->timeout = $timeout;
diff --git a/src/Query/UdpTransportExecutor.php b/src/Query/UdpTransportExecutor.php
index 30a3d705..a8cbfafa 100644
--- a/src/Query/UdpTransportExecutor.php
+++ b/src/Query/UdpTransportExecutor.php
@@ -98,7 +98,7 @@ final class UdpTransportExecutor implements ExecutorInterface
      * @param string         $nameserver
      * @param ?LoopInterface $loop
      */
-    public function __construct($nameserver, LoopInterface $loop = null)
+    public function __construct($nameserver, $loop = null)
     {
         if (\strpos($nameserver, '[') === false && \substr_count($nameserver, ':') >= 2 && \strpos($nameserver, '://') === false) {
             // several colons, but not enclosed in square brackets => enclose IPv6 address in square brackets
@@ -110,6 +110,10 @@ public function __construct($nameserver, LoopInterface $loop = null)
             throw new \InvalidArgumentException('Invalid nameserver address given');
         }
 
+        if ($loop !== null && !$loop instanceof LoopInterface) { // manual type check to support legacy PHP < 7.1
+            throw new \InvalidArgumentException('Argument #2 ($loop) expected null|React\EventLoop\LoopInterface');
+        }
+
         $this->nameserver = 'udp://' . $parts['host'] . ':' . (isset($parts['port']) ? $parts['port'] : 53);
         $this->loop = $loop ?: Loop::get();
         $this->parser = new Parser();
diff --git a/src/Resolver/Factory.php b/src/Resolver/Factory.php
index 5fe608cb..52658951 100644
--- a/src/Resolver/Factory.php
+++ b/src/Resolver/Factory.php
@@ -36,8 +36,12 @@ final class Factory
      * @throws \InvalidArgumentException for invalid DNS server address
      * @throws \UnderflowException when given DNS Config object has an empty list of nameservers
      */
-    public function create($config, LoopInterface $loop = null)
+    public function create($config, $loop = null)
     {
+        if ($loop !== null && !$loop instanceof LoopInterface) { // manual type check to support legacy PHP < 7.1
+            throw new \InvalidArgumentException('Argument #2 ($loop) expected null|React\EventLoop\LoopInterface');
+        }
+
         $executor = $this->decorateHostsFileExecutor($this->createExecutor($config, $loop ?: Loop::get()));
 
         return new Resolver($executor);
@@ -59,8 +63,16 @@ public function create($config, LoopInterface $loop = null)
      * @throws \InvalidArgumentException for invalid DNS server address
      * @throws \UnderflowException when given DNS Config object has an empty list of nameservers
      */
-    public function createCached($config, LoopInterface $loop = null, CacheInterface $cache = null)
+    public function createCached($config, $loop = null, $cache = null)
     {
+        if ($loop !== null && !$loop instanceof LoopInterface) { // manual type check to support legacy PHP < 7.1
+            throw new \InvalidArgumentException('Argument #2 ($loop) expected null|React\EventLoop\LoopInterface');
+        }
+
+        if ($cache !== null && !$cache instanceof CacheInterface) { // manual type check to support legacy PHP < 7.1
+            throw new \InvalidArgumentException('Argument #3 ($cache) expected null|React\Cache\CacheInterface');
+        }
+
         // default to keeping maximum of 256 responses in cache unless explicitly given
         if (!($cache instanceof CacheInterface)) {
             $cache = new ArrayCache(256);
diff --git a/tests/Query/TcpTransportExecutorTest.php b/tests/Query/TcpTransportExecutorTest.php
index 33dddacd..3bdf3831 100644
--- a/tests/Query/TcpTransportExecutorTest.php
+++ b/tests/Query/TcpTransportExecutorTest.php
@@ -24,7 +24,9 @@ public function testCtorShouldAcceptNameserverAddresses($input, $expected)
         $executor = new TcpTransportExecutor($input, $loop);
 
         $ref = new \ReflectionProperty($executor, 'nameserver');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $value = $ref->getValue($executor);
 
         $this->assertEquals($expected, $value);
@@ -65,7 +67,9 @@ public function testCtorWithoutLoopShouldAssignDefaultLoop()
         $executor = new TcpTransportExecutor('127.0.0.1');
 
         $ref = new \ReflectionProperty($executor, 'loop');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $loop = $ref->getValue($executor);
 
         $this->assertInstanceOf('React\EventLoop\LoopInterface', $loop);
@@ -127,7 +131,9 @@ public function testQueryRejectsIfServerConnectionFails()
         $executor = new TcpTransportExecutor('::1', $loop);
 
         $ref = new \ReflectionProperty($executor, 'nameserver');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $ref->setValue($executor, '///');
 
         $query = new Query('google.com', Message::TYPE_A, Message::CLASS_IN);
@@ -306,7 +312,9 @@ public function testQueryStaysPendingWhenClientCanNotSendExcessiveMessageInOneCh
         $promise->then($this->expectCallableNever(), $this->expectCallableNever());
 
         $ref = new \ReflectionProperty($executor, 'writePending');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $writePending = $ref->getValue($executor);
 
         $this->assertTrue($writePending);
@@ -336,7 +344,7 @@ public function testQueryStaysPendingWhenClientCanNotSendExcessiveMessageInOneCh
         $query = new Query('google' . str_repeat('.com', 100), Message::TYPE_A, Message::CLASS_IN);
 
         // send a bunch of queries and keep reference to last promise
-        for ($i = 0; $i < 2000; ++$i) {
+        for ($i = 0; $i < 20000; ++$i) {
             $promise = $executor->query($query);
         }
 
@@ -348,7 +356,9 @@ public function testQueryStaysPendingWhenClientCanNotSendExcessiveMessageInOneCh
         $promise->then($this->expectCallableNever(), $this->expectCallableNever());
 
         $ref = new \ReflectionProperty($executor, 'writePending');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $writePending = $ref->getValue($executor);
 
         $this->assertTrue($writePending);
@@ -371,7 +381,7 @@ public function testQueryRejectsWhenClientKeepsSendingWhenServerClosesSocketWith
 
         // send a bunch of queries and keep reference to last promise
         $exception = null;
-        for ($i = 0; $i < 2000; ++$i) {
+        for ($i = 0; $i < 20000; ++$i) {
             $promise = $executor->query($query);
             $promise->then(null, function (\Exception $reason) use (&$exception) {
                 $exception = $reason;
@@ -389,7 +399,9 @@ public function testQueryRejectsWhenClientKeepsSendingWhenServerClosesSocketWith
         $executor->handleWritable();
 
         $ref = new \ReflectionProperty($executor, 'writePending');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $writePending = $ref->getValue($executor);
 
         // We expect an EPIPE (Broken pipe) on second write.
@@ -744,7 +756,9 @@ public function testQueryResolvesIfServerSendsBackResponseMessageAndWillStartIdl
 
         // use outgoing buffer as response message
         $ref = new \ReflectionProperty($executor, 'writeBuffer');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $data = $ref->getValue($executor);
 
         $client = stream_socket_accept($server);
@@ -779,7 +793,9 @@ public function testQueryResolvesIfServerSendsBackResponseMessageAfterCancelling
 
         // use outgoing buffer as response message
         $ref = new \ReflectionProperty($executor, 'writeBuffer');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $data = $ref->getValue($executor);
 
         $client = stream_socket_accept($server);
@@ -812,7 +828,9 @@ public function testQueryResolvesIfServerSendsBackResponseMessageAfterCancelling
 
         // use outgoing buffer as response message
         $ref = new \ReflectionProperty($executor, 'writeBuffer');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $data = $ref->getValue($executor);
 
         $client = stream_socket_accept($server);
@@ -853,7 +871,9 @@ public function testTriggerIdleTimerAfterPreviousQueryResolvedWillCloseIdleSocke
 
         // use outgoing buffer as response message
         $ref = new \ReflectionProperty($executor, 'writeBuffer');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $data = $ref->getValue($executor);
 
         $client = stream_socket_accept($server);
@@ -891,7 +911,9 @@ public function testClosingConnectionAfterPreviousQueryResolvedWillCancelIdleTim
 
         // use outgoing buffer as response message
         $ref = new \ReflectionProperty($executor, 'writeBuffer');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $data = $ref->getValue($executor);
 
         $client = stream_socket_accept($server);
@@ -929,7 +951,9 @@ public function testQueryAgainAfterPreviousQueryResolvedWillReuseSocketAndCancel
 
         // use outgoing buffer as response message
         $ref = new \ReflectionProperty($executor, 'writeBuffer');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $data = $ref->getValue($executor);
 
         $client = stream_socket_accept($server);
@@ -943,4 +967,11 @@ public function testQueryAgainAfterPreviousQueryResolvedWillReuseSocketAndCancel
         // trigger second query
         $executor->query($query);
     }
+
+    /** @test */
+    public function constructorThrowsExceptionForInvalidLoop()
+    {
+        $this->setExpectedException('InvalidArgumentException', 'Argument #2 ($loop) expected null|React\EventLoop\LoopInterface');
+        new TcpTransportExecutor('tcp://127.0.0.1:53', 'loop');
+    }
 }
diff --git a/tests/Query/TimeoutExecutorTest.php b/tests/Query/TimeoutExecutorTest.php
index b7857783..a0bc3abb 100644
--- a/tests/Query/TimeoutExecutorTest.php
+++ b/tests/Query/TimeoutExecutorTest.php
@@ -34,7 +34,9 @@ public function testCtorWithoutLoopShouldAssignDefaultLoop()
         $executor = new TimeoutExecutor($this->executor, 5.0);
 
         $ref = new \ReflectionProperty($executor, 'loop');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $loop = $ref->getValue($executor);
 
         $this->assertInstanceOf('React\EventLoop\LoopInterface', $loop);
@@ -185,4 +187,11 @@ public function testRejectsPromiseAndCancelsPendingQueryWhenTimeoutTriggers()
         $this->assertInstanceOf('React\Dns\Query\TimeoutException', $exception);
         $this->assertEquals('DNS query for igor.io (A) timed out' , $exception->getMessage());
     }
+
+    /** @test */
+    public function constructorThrowsExceptionForInvalidLoop()
+    {
+        $this->setExpectedException('InvalidArgumentException', 'Argument #3 ($loop) expected null|React\EventLoop\LoopInterface');
+        new TimeoutExecutor($this->executor, 5.0, 'loop');
+    }
 }
diff --git a/tests/Query/UdpTransportExecutorTest.php b/tests/Query/UdpTransportExecutorTest.php
index 3f04d9ad..4036b675 100644
--- a/tests/Query/UdpTransportExecutorTest.php
+++ b/tests/Query/UdpTransportExecutorTest.php
@@ -24,7 +24,9 @@ public function testCtorShouldAcceptNameserverAddresses($input, $expected)
         $executor = new UdpTransportExecutor($input, $loop);
 
         $ref = new \ReflectionProperty($executor, 'nameserver');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $value = $ref->getValue($executor);
 
         $this->assertEquals($expected, $value);
@@ -65,7 +67,9 @@ public function testCtorWithoutLoopShouldAssignDefaultLoop()
         $executor = new UdpTransportExecutor('127.0.0.1');
 
         $ref = new \ReflectionProperty($executor, 'loop');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $loop = $ref->getValue($executor);
 
         $this->assertInstanceOf('React\EventLoop\LoopInterface', $loop);
@@ -132,7 +136,9 @@ public function testQueryRejectsIfServerConnectionFails()
         $executor = new UdpTransportExecutor('::1', $loop);
 
         $ref = new \ReflectionProperty($executor, 'nameserver');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $ref->setValue($executor, '///');
 
         $query = new Query('google.com', Message::TYPE_A, Message::CLASS_IN);
@@ -161,7 +167,9 @@ public function testQueryRejectsIfSendToServerFailsAfterConnectionWithoutCalling
 
         // increase hard-coded maximum packet size to allow sending excessive data
         $ref = new \ReflectionProperty($executor, 'maxPacketSize');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $ref->setValue($executor, PHP_INT_MAX);
 
         $error = null;
@@ -375,4 +383,11 @@ public function testQueryResolvesIfServerSendsValidResponse()
 
         $this->assertInstanceOf('React\Dns\Model\Message', $response);
     }
+
+    /** @test */
+    public function constructorThrowsExceptionForInvalidLoop()
+    {
+        $this->setExpectedException('InvalidArgumentException', 'Argument #2 ($loop) expected null|React\EventLoop\LoopInterface');
+        new UdpTransportExecutor('udp://127.0.0.1:53', 'loop');
+    }
 }
diff --git a/tests/Resolver/FactoryTest.php b/tests/Resolver/FactoryTest.php
index af758b51..4a14df03 100644
--- a/tests/Resolver/FactoryTest.php
+++ b/tests/Resolver/FactoryTest.php
@@ -33,13 +33,17 @@ public function createWithoutSchemeShouldCreateResolverWithSelectiveUdpAndTcpExe
         $this->assertInstanceOf('React\Dns\Query\CoopExecutor', $coopExecutor);
 
         $ref = new \ReflectionProperty($coopExecutor, 'executor');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $retryExecutor = $ref->getValue($coopExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\RetryExecutor', $retryExecutor);
 
         $ref = new \ReflectionProperty($retryExecutor, 'executor');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $selectiveExecutor = $ref->getValue($retryExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\SelectiveTransportExecutor', $selectiveExecutor);
@@ -47,13 +51,17 @@ public function createWithoutSchemeShouldCreateResolverWithSelectiveUdpAndTcpExe
         // udp below:
 
         $ref = new \ReflectionProperty($selectiveExecutor, 'datagramExecutor');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $timeoutExecutor = $ref->getValue($selectiveExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\TimeoutExecutor', $timeoutExecutor);
 
         $ref = new \ReflectionProperty($timeoutExecutor, 'executor');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $udpExecutor = $ref->getValue($timeoutExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\UdpTransportExecutor', $udpExecutor);
@@ -61,13 +69,17 @@ public function createWithoutSchemeShouldCreateResolverWithSelectiveUdpAndTcpExe
         // tcp below:
 
         $ref = new \ReflectionProperty($selectiveExecutor, 'streamExecutor');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $timeoutExecutor = $ref->getValue($selectiveExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\TimeoutExecutor', $timeoutExecutor);
 
         $ref = new \ReflectionProperty($timeoutExecutor, 'executor');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $tcpExecutor = $ref->getValue($timeoutExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\TcpTransportExecutor', $tcpExecutor);
@@ -88,19 +100,25 @@ public function createWithUdpSchemeShouldCreateResolverWithUdpExecutorStack()
         $this->assertInstanceOf('React\Dns\Query\CoopExecutor', $coopExecutor);
 
         $ref = new \ReflectionProperty($coopExecutor, 'executor');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $retryExecutor = $ref->getValue($coopExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\RetryExecutor', $retryExecutor);
 
         $ref = new \ReflectionProperty($retryExecutor, 'executor');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $timeoutExecutor = $ref->getValue($retryExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\TimeoutExecutor', $timeoutExecutor);
 
         $ref = new \ReflectionProperty($timeoutExecutor, 'executor');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $udpExecutor = $ref->getValue($timeoutExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\UdpTransportExecutor', $udpExecutor);
@@ -121,19 +139,25 @@ public function createWithTcpSchemeShouldCreateResolverWithTcpExecutorStack()
         $this->assertInstanceOf('React\Dns\Query\CoopExecutor', $coopExecutor);
 
         $ref = new \ReflectionProperty($coopExecutor, 'executor');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $retryExecutor = $ref->getValue($coopExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\RetryExecutor', $retryExecutor);
 
         $ref = new \ReflectionProperty($retryExecutor, 'executor');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $timeoutExecutor = $ref->getValue($retryExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\TimeoutExecutor', $timeoutExecutor);
 
         $ref = new \ReflectionProperty($timeoutExecutor, 'executor');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $tcpExecutor = $ref->getValue($timeoutExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\TcpTransportExecutor', $tcpExecutor);
@@ -157,19 +181,25 @@ public function createWithConfigWithTcpNameserverSchemeShouldCreateResolverWithT
         $this->assertInstanceOf('React\Dns\Query\CoopExecutor', $coopExecutor);
 
         $ref = new \ReflectionProperty($coopExecutor, 'executor');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $retryExecutor = $ref->getValue($coopExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\RetryExecutor', $retryExecutor);
 
         $ref = new \ReflectionProperty($retryExecutor, 'executor');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $timeoutExecutor = $ref->getValue($retryExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\TimeoutExecutor', $timeoutExecutor);
 
         $ref = new \ReflectionProperty($timeoutExecutor, 'executor');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $tcpExecutor = $ref->getValue($timeoutExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\TcpTransportExecutor', $tcpExecutor);
@@ -194,49 +224,65 @@ public function createWithConfigWithTwoNameserversWithTcpSchemeShouldCreateResol
         $this->assertInstanceOf('React\Dns\Query\CoopExecutor', $coopExecutor);
 
         $ref = new \ReflectionProperty($coopExecutor, 'executor');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $retryExecutor = $ref->getValue($coopExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\RetryExecutor', $retryExecutor);
 
         $ref = new \ReflectionProperty($retryExecutor, 'executor');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $fallbackExecutor = $ref->getValue($retryExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\FallbackExecutor', $fallbackExecutor);
 
         $ref = new \ReflectionProperty($fallbackExecutor, 'executor');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $timeoutExecutor = $ref->getValue($fallbackExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\TimeoutExecutor', $timeoutExecutor);
 
         $ref = new \ReflectionProperty($timeoutExecutor, 'executor');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $tcpExecutor = $ref->getValue($timeoutExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\TcpTransportExecutor', $tcpExecutor);
 
         $ref = new \ReflectionProperty($tcpExecutor, 'nameserver');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $nameserver = $ref->getValue($tcpExecutor);
 
         $this->assertEquals('tcp://8.8.8.8:53', $nameserver);
 
         $ref = new \ReflectionProperty($fallbackExecutor, 'fallback');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $timeoutExecutor = $ref->getValue($fallbackExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\TimeoutExecutor', $timeoutExecutor);
 
         $ref = new \ReflectionProperty($timeoutExecutor, 'executor');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $tcpExecutor = $ref->getValue($timeoutExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\TcpTransportExecutor', $tcpExecutor);
 
         $ref = new \ReflectionProperty($tcpExecutor, 'nameserver');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $nameserver = $ref->getValue($tcpExecutor);
 
         $this->assertEquals('tcp://1.1.1.1:53', $nameserver);
@@ -262,73 +308,97 @@ public function createWithConfigWithThreeNameserversWithTcpSchemeShouldCreateRes
         $this->assertInstanceOf('React\Dns\Query\CoopExecutor', $coopExecutor);
 
         $ref = new \ReflectionProperty($coopExecutor, 'executor');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $retryExecutor = $ref->getValue($coopExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\RetryExecutor', $retryExecutor);
 
         $ref = new \ReflectionProperty($retryExecutor, 'executor');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $fallbackExecutor = $ref->getValue($retryExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\FallbackExecutor', $fallbackExecutor);
 
         $ref = new \ReflectionProperty($fallbackExecutor, 'executor');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $timeoutExecutor = $ref->getValue($fallbackExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\TimeoutExecutor', $timeoutExecutor);
 
         $ref = new \ReflectionProperty($timeoutExecutor, 'executor');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $tcpExecutor = $ref->getValue($timeoutExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\TcpTransportExecutor', $tcpExecutor);
 
         $ref = new \ReflectionProperty($tcpExecutor, 'nameserver');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $nameserver = $ref->getValue($tcpExecutor);
 
         $this->assertEquals('tcp://8.8.8.8:53', $nameserver);
 
         $ref = new \ReflectionProperty($fallbackExecutor, 'fallback');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $fallbackExecutor = $ref->getValue($fallbackExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\FallbackExecutor', $fallbackExecutor);
 
         $ref = new \ReflectionProperty($fallbackExecutor, 'executor');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $timeoutExecutor = $ref->getValue($fallbackExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\TimeoutExecutor', $timeoutExecutor);
 
         $ref = new \ReflectionProperty($timeoutExecutor, 'executor');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $tcpExecutor = $ref->getValue($timeoutExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\TcpTransportExecutor', $tcpExecutor);
 
         $ref = new \ReflectionProperty($tcpExecutor, 'nameserver');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $nameserver = $ref->getValue($tcpExecutor);
 
         $this->assertEquals('tcp://1.1.1.1:53', $nameserver);
 
         $ref = new \ReflectionProperty($fallbackExecutor, 'fallback');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $timeoutExecutor = $ref->getValue($fallbackExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\TimeoutExecutor', $timeoutExecutor);
 
         $ref = new \ReflectionProperty($timeoutExecutor, 'executor');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $tcpExecutor = $ref->getValue($timeoutExecutor);
 
         $this->assertInstanceOf('React\Dns\Query\TcpTransportExecutor', $tcpExecutor);
 
         $ref = new \ReflectionProperty($tcpExecutor, 'nameserver');
-        $ref->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $ref->setAccessible(true);
+        }
         $nameserver = $ref->getValue($tcpExecutor);
 
         $this->assertEquals('tcp://9.9.9.9:53', $nameserver);
@@ -399,6 +469,32 @@ public function createCachedShouldCreateResolverWithCachingExecutorWithCustomCac
         $this->assertSame($cache, $cacheProperty);
     }
 
+    /** @test */
+    public function createThrowsExceptionForInvalidLoop()
+    {
+        $this->setExpectedException('InvalidArgumentException', 'Argument #2 ($loop) expected null|React\EventLoop\LoopInterface');
+        $factory = new Factory();
+        $factory->create('config', 'loop');
+    }
+
+    /** @test */
+    public function createCachedThrowsExceptionForInvalidLoop()
+    {
+        $this->setExpectedException('InvalidArgumentException', 'Argument #2 ($loop) expected null|React\EventLoop\LoopInterface');
+        $factory = new Factory();
+        $factory->createCached('config', 'loop');
+    }
+
+    /** @test */
+    public function createCachedThrowsExceptionForInvalidCache()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+
+        $this->setExpectedException('InvalidArgumentException', 'Argument #3 ($cache) expected null|React\Cache\CacheInterface');
+        $factory = new Factory();
+        $factory->createCached('config', $loop, 'cache');
+    }
+
     private function getResolverPrivateExecutor($resolver)
     {
         $executor = $this->getResolverPrivateMemberValue($resolver, 'executor');
@@ -406,7 +502,9 @@ private function getResolverPrivateExecutor($resolver)
         // extract underlying executor that may be wrapped in multiple layers of hosts file executors
         while ($executor instanceof HostsFileExecutor) {
             $reflector = new \ReflectionProperty('React\Dns\Query\HostsFileExecutor', 'fallback');
-            $reflector->setAccessible(true);
+            if (\PHP_VERSION_ID < 80100) {
+                $reflector->setAccessible(true);
+            }
 
             $executor = $reflector->getValue($executor);
         }
@@ -417,14 +515,18 @@ private function getResolverPrivateExecutor($resolver)
     private function getResolverPrivateMemberValue($resolver, $field)
     {
         $reflector = new \ReflectionProperty('React\Dns\Resolver\Resolver', $field);
-        $reflector->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $reflector->setAccessible(true);
+        }
         return $reflector->getValue($resolver);
     }
 
     private function getCachingExecutorPrivateMemberValue($resolver, $field)
     {
         $reflector = new \ReflectionProperty('React\Dns\Query\CachingExecutor', $field);
-        $reflector->setAccessible(true);
+        if (\PHP_VERSION_ID < 80100) {
+            $reflector->setAccessible(true);
+        }
         return $reflector->getValue($resolver);
     }
 }