diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 80993d1..b83ce49 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,8 @@ jobs:
         os:
           - ubuntu-latest
           - windows-latest
-        php: 
+        php:
+          - 8.0
           - 7.4
           - 7.3
           - 7.2
diff --git a/README.md b/README.md
index 9855d15..63b630a 100644
--- a/README.md
+++ b/README.md
@@ -204,7 +204,7 @@ See also the [CHANGELOG](CHANGELOG.md) for details about version upgrades.
 
 This project aims to run on any platform and thus does not require any PHP
 extensions besides `ext-sockets` and supports running on legacy PHP 5.3 through
-current PHP 7+.
+current PHP 8+.
 It's *highly recommended to use PHP 7+* for this project.
 
 ## Tests
diff --git a/src/Exception.php b/src/Exception.php
index 452643e..bdabf78 100644
--- a/src/Exception.php
+++ b/src/Exception.php
@@ -9,7 +9,7 @@ class Exception extends RuntimeException
     /**
      * Create an Exception after a socket operation on the given $resource failed
      *
-     * @param resource $resource
+     * @param \Socket|resource $resource
      * @param string   $messagePrefix
      * @return self
      * @uses socket_last_error() to get last socket error code
@@ -18,7 +18,13 @@ class Exception extends RuntimeException
      */
     public static function createFromSocketResource($resource, $messagePrefix = 'Socket operation failed')
     {
-        if (is_resource($resource)) {
+        if (PHP_VERSION_ID >= 80000) {
+            try {
+                $code = socket_last_error($resource);
+            } catch (\Error $e) {
+                $code = SOCKET_ENOTSOCK;
+            }
+        } elseif (is_resource($resource)) {
             $code = socket_last_error($resource);
             socket_clear_error($resource);
         } else {
diff --git a/src/Factory.php b/src/Factory.php
index d8ab5ef..bd72176 100644
--- a/src/Factory.php
+++ b/src/Factory.php
@@ -170,6 +170,7 @@ public function createIcmp6()
      * @param int $protocol
      * @return \Socket\Raw\Socket
      * @throws Exception if creating socket fails
+     * @throws \Error PHP 8 only: throws \Error when arguments are invalid
      * @uses socket_create()
      */
     public function create($domain, $type, $protocol)
@@ -189,6 +190,7 @@ public function create($domain, $type, $protocol)
      * @param int $protocol
      * @return \Socket\Raw\Socket[]
      * @throws Exception if creating pair of sockets fails
+     * @throws \Error PHP 8 only: throws \Error when arguments are invalid
      * @uses socket_create_pair()
      */
     public function createPair($domain, $type, $protocol)
@@ -207,6 +209,7 @@ public function createPair($domain, $type, $protocol)
      * @param int $backlog
      * @return \Socket\Raw\Socket
      * @throws Exception if creating listening socket fails
+     * @throws \Error PHP 8 only: throws \Error when arguments are invalid
      * @uses socket_create_listen()
      * @see self::createServer() as an alternative to bind to specific IP, IPv6, UDP, UNIX, UGP
      */
diff --git a/src/Socket.php b/src/Socket.php
index e86c195..514bd97 100644
--- a/src/Socket.php
+++ b/src/Socket.php
@@ -13,7 +13,7 @@ class Socket
     /**
      * reference to actual socket resource
      *
-     * @var resource
+     * @var \Socket|resource
      */
     private $resource;
 
@@ -22,7 +22,7 @@ class Socket
      *
      * should usually not be called manually, see Factory
      *
-     * @param resource $resource
+     * @param \Socket|resource $resource
      * @see Factory as the preferred (and simplest) way to construct socket instances
      */
     public function __construct($resource)
@@ -33,7 +33,7 @@ public function __construct($resource)
     /**
      * get actual socket resource
      *
-     * @return resource
+     * @return \Socket|resource returns the socket resource (a `Socket` object as of PHP 8)
      */
     public function getResource()
     {
@@ -45,6 +45,7 @@ public function getResource()
      *
      * @return \Socket\Raw\Socket new connected socket used for communication
      * @throws Exception on error, if this is not a listening socket or there's no connection pending
+     * @throws \Error PHP 8 only: throws \Error when socket is invalid
      * @see self::selectRead() to check if this listening socket can accept()
      * @see Factory::createServer() to create a listening socket
      * @see self::listen() has to be called first
@@ -67,6 +68,7 @@ public function accept()
      * @param string $address either of IPv4:port, hostname:port, [IPv6]:port, unix-path
      * @return self $this (chainable)
      * @throws Exception on error
+     * @throws \Error PHP 8 only: throws \Error when socket or arguments are invalid
      * @uses socket_bind()
      */
     public function bind($address)
@@ -85,6 +87,7 @@ public function bind($address)
      * its socket resource remains closed and most further operations will fail!
      *
      * @return self $this (chainable)
+     * @throws \Error PHP 8 only: throws \Error when socket is invalid
      * @see self::shutdown() should be called before closing socket
      * @uses socket_close()
      */
@@ -100,6 +103,7 @@ public function close()
      * @param string $address either of IPv4:port, hostname:port, [IPv6]:port, unix-path
      * @return self $this (chainable)
      * @throws Exception on error
+     * @throws \Error PHP 8 only: throws \Error when socket or arguments are invalid
      * @uses socket_connect()
      */
     public function connect($address)
@@ -126,6 +130,7 @@ public function connect($address)
      * @param float  $timeout maximum time to wait (in seconds)
      * @return self $this (chainable)
      * @throws Exception on error
+     * @throws \Error PHP 8 only: throws \Error when socket or arguments are invalid
      * @uses self::setBlocking() to enable non-blocking mode
      * @uses self::connect() to initiate the connection
      * @uses self::selectWrite() to wait for the connection to complete
@@ -166,6 +171,7 @@ public function connectTimeout($address, $timeout)
      * @param int $optname
      * @return mixed
      * @throws Exception on error
+     * @throws \Error PHP 8 only: throws \Error when socket or arguments are invalid
      * @uses socket_get_option()
      */
     public function getOption($level, $optname)
@@ -182,6 +188,7 @@ public function getOption($level, $optname)
      *
      * @return string
      * @throws Exception on error
+     * @throws \Error PHP 8 only: throws \Error when socket is invalid
      * @uses socket_getpeername()
      */
     public function getPeerName()
@@ -198,6 +205,7 @@ public function getPeerName()
      *
      * @return string
      * @throws Exception on error
+     * @throws \Error PHP 8 only: throws \Error when socket is invalid
      * @uses socket_getsockname()
      */
     public function getSockName()
@@ -215,6 +223,7 @@ public function getSockName()
      * @param int $backlog maximum number of incoming connections to be queued
      * @return self $this (chainable)
      * @throws Exception on error
+     * @throws \Error PHP 8 only: throws \Error when socket or arguments are invalid
      * @see self::bind() has to be called first to bind name to socket
      * @uses socket_listen()
      */
@@ -237,6 +246,7 @@ public function listen($backlog = 0)
      * @param int $type   either of PHP_BINARY_READ (the default) or PHP_NORMAL_READ
      * @return string
      * @throws Exception on error
+     * @throws \Error PHP 8 only: throws \Error when socket or arguments are invalid
      * @see self::recv() if you need to pass flags
      * @uses socket_read()
      */
@@ -256,6 +266,7 @@ public function read($length, $type = PHP_BINARY_READ)
      * @param int $flags
      * @return string
      * @throws Exception on error
+     * @throws \Error PHP 8 only: throws \Error when socket or arguments are invalid
      * @see self::read() if you do not need to pass $flags
      * @see self::recvFrom() if your socket is not connect()ed
      * @uses socket_recv()
@@ -277,6 +288,7 @@ public function recv($length, $flags)
      * @param string $remote reference will be filled with remote/peer address/path
      * @return string
      * @throws Exception on error
+     * @throws \Error PHP 8 only: throws \Error when socket or arguments are invalid
      * @see self::recv() if your socket is connect()ed
      * @uses socket_recvfrom()
      */
@@ -296,6 +308,7 @@ public function recvFrom($length, $flags, &$remote)
      * @param float|NULL $sec maximum time to wait (in seconds), 0 = immediate polling, null = no limit
      * @return boolean true = socket ready (read will not block), false = timeout expired, socket is not ready
      * @throws Exception on error
+     * @throws \Error PHP 8 only: throws \Error when socket or arguments are invalid
      * @uses socket_select()
      */
     public function selectRead($sec = 0)
@@ -315,6 +328,7 @@ public function selectRead($sec = 0)
      * @param float|NULL $sec maximum time to wait (in seconds), 0 = immediate polling, null = no limit
      * @return boolean true = socket ready (write will not block), false = timeout expired, socket is not ready
      * @throws Exception on error
+     * @throws \Error PHP 8 only: throws \Error when socket or arguments are invalid
      * @uses socket_select()
      */
     public function selectWrite($sec = 0)
@@ -335,6 +349,7 @@ public function selectWrite($sec = 0)
      * @param int    $flags
      * @return int number of bytes actually written (make sure to check against given buffer length!)
      * @throws Exception on error
+     * @throws \Error PHP 8 only: throws \Error when socket or arguments are invalid
      * @see self::write() if you do not need to pass $flags
      * @see self::sendTo() if your socket is not connect()ed
      * @uses socket_send()
@@ -356,6 +371,7 @@ public function send($buffer, $flags)
      * @param string $remote remote/peer address/path
      * @return int number of bytes actually written
      * @throws Exception on error
+     * @throws \Error PHP 8 only: throws \Error when socket or arguments are invalid
      * @see self::send() if your socket is connect()ed
      * @uses socket_sendto()
      */
@@ -374,6 +390,7 @@ public function sendTo($buffer, $flags, $remote)
      * @param boolean $toggle
      * @return self $this (chainable)
      * @throws Exception on error
+     * @throws \Error PHP 8 only: throws \Error when socket or arguments are invalid
      * @uses socket_set_block()
      * @uses socket_set_nonblock()
      */
@@ -394,6 +411,7 @@ public function setBlocking($toggle = true)
      * @param mixed $optval
      * @return self $this (chainable)
      * @throws Exception on error
+     * @throws \Error PHP 8 only: throws \Error when socket or arguments are invalid
      * @see self::getOption()
      * @uses socket_set_option()
      */
@@ -412,6 +430,7 @@ public function setOption($level, $optname, $optval)
      * @param int $how 0 = shutdown reading, 1 = shutdown writing, 2 = shutdown reading and writing
      * @return self $this (chainable)
      * @throws Exception on error
+     * @throws \Error PHP 8 only: throws \Error when socket or arguments are invalid
      * @see self::close()
      * @uses socket_shutdown()
      */
@@ -430,6 +449,7 @@ public function shutdown($how = 2)
      * @param string $buffer
      * @return int number of bytes actually written
      * @throws Exception on error
+     * @throws \Error PHP 8 only: throws \Error when socket or arguments are invalid
      * @see self::send() if you need to pass flags
      * @uses socket_write()
      */
@@ -447,6 +467,7 @@ public function write($buffer)
      *
      * @return int usually either SOCK_STREAM or SOCK_DGRAM
      * @throws Exception on error
+     * @throws \Error PHP 8 only: throws \Error when socket is invalid
      * @uses self::getOption()
      */
     public function getType()
@@ -469,6 +490,7 @@ public function getType()
      *
      * @return self $this (chainable)
      * @throws Exception if error code is not 0
+     * @throws \Error PHP 8 only: throws \Error when socket is invalid
      * @uses self::getOption() to retrieve and clear current error code
      * @uses self::getErrorMessage() to translate error code to
      */
diff --git a/tests/FactoryTest.php b/tests/FactoryTest.php
index acea175..81a9ac3 100644
--- a/tests/FactoryTest.php
+++ b/tests/FactoryTest.php
@@ -219,7 +219,7 @@ public function testCreateServerIcmp4()
         } catch (Exception $e) {
             if ($e->getCode() === SOCKET_EPERM) {
                 // skip if not root
-                return $this->markTestSkipped('No access to ICMPv4 socket (only root can do so)');
+                $this->markTestSkipped('No access to ICMPv4 socket (only root can do so)');
             }
             throw $e;
         }
@@ -237,7 +237,7 @@ public function testCreateServerIcmp6()
         } catch (Exception $e) {
             if ($e->getCode() === SOCKET_EPERM) {
                 // skip if not root
-                return $this->markTestSkipped('No access to ICMPv6 socket (only root can do so)');
+                $this->markTestSkipped('No access to ICMPv6 socket (only root can do so)');
             }
             throw $e;
         }
@@ -311,7 +311,7 @@ public function testCreateIcmp4()
         } catch (Exception $e) {
             if ($e->getCode() === SOCKET_EPERM) {
                 // skip if not root
-                return $this->markTestSkipped('No access to ICMPv4 socket (only root can do so)');
+                $this->markTestSkipped('No access to ICMPv4 socket (only root can do so)');
             }
             throw $e;
         }
@@ -329,7 +329,7 @@ public function testCreateIcmp6()
         } catch (Exception $e) {
             if ($e->getCode() === SOCKET_EPERM) {
                 // skip if not root
-                return $this->markTestSkipped('No access to ICMPv6 socket (only root can do so)');
+                $this->markTestSkipped('No access to ICMPv6 socket (only root can do so)');
             }
             throw $e;
         }
@@ -365,6 +365,10 @@ public function testCreateInvalid()
             $this->factory->create(0, 1, 2);
         } catch (Exception $e) {
             return;
+        } catch (Error $e) {
+            if (PHP_VERSION_ID >= 80000) {
+                return;
+            }
         }
         $this->fail();
     }
@@ -394,6 +398,10 @@ public function testCreatePairInvalid()
             $this->factory->createPair(0, 1, 2);
         } catch (Exception $e) {
             return;
+        } catch (Error $e) {
+            if (PHP_VERSION_ID >= 80000) {
+                return;
+            }
         }
         $this->fail();
     }
diff --git a/tests/SocketTest.php b/tests/SocketTest.php
index ca73603..8589692 100644
--- a/tests/SocketTest.php
+++ b/tests/SocketTest.php
@@ -26,7 +26,12 @@ public function testConnectGoogle()
         $socket = $this->factory->createClient('www.google.com:80');
 
         $this->assertInstanceOf('Socket\Raw\Socket', $socket);
-        $this->assertEquals('resource', gettype($socket->getResource()));
+
+        if (PHP_VERSION_ID >= 80000) {
+            $this->assertInstanceOf('Socket', $socket->getResource());
+        } else {
+            $this->assertEquals('resource', gettype($socket->getResource()));
+        }
 
         // connecting from local address:
         $address = $socket->getSockName();
@@ -220,6 +225,10 @@ public function testServerNonBlocking()
      */
     public function testServerNonBlockingAcceptNobody(Socket $server)
     {
+        if (PHP_VERSION_ID >= 80000) {
+            $this->markTestIncomplete('Causes SEGFAULTs on PHP 8');
+        }
+
         try {
             $server->accept();
             $this->fail('accept() MUST throw an exception');
@@ -262,7 +271,11 @@ public function testBindThrowsWhenSocketIsAlreadyClosed()
         $socket = $this->factory->createTcp4();
         $socket->close();
 
-        $this->setExpectedException('Socket\Raw\Exception', null, SOCKET_ENOTSOCK);
+        if (PHP_VERSION_ID >= 80000) {
+            $this->setExpectedException('Error', 'has already been closed');
+        } else {
+            $this->setExpectedException('Socket\Raw\Exception', null, SOCKET_ENOTSOCK);
+        }
         $socket->bind('127.0.0.1:0');
     }
 
@@ -271,7 +284,11 @@ public function testAssertAliveThrowsWhenSocketIsAlreadyClosed()
         $socket = $this->factory->createTcp4();
         $socket->close();
 
-        $this->setExpectedException('Socket\Raw\Exception', null, SOCKET_ENOTSOCK);
+        if (PHP_VERSION_ID >= 80000) {
+            $this->setExpectedException('Error', 'has already been closed');
+        } else {
+            $this->setExpectedException('Socket\Raw\Exception', null, SOCKET_ENOTSOCK);
+        }
         $socket->assertAlive();
     }