diff --git a/Psr/Log/AbstractLogger.php b/Psr/Log/AbstractLogger.php
deleted file mode 100644
index e02f9da..0000000
--- a/Psr/Log/AbstractLogger.php
+++ /dev/null
@@ -1,128 +0,0 @@
-<?php
-
-namespace Psr\Log;
-
-/**
- * This is a simple Logger implementation that other Loggers can inherit from.
- *
- * It simply delegates all log-level-specific methods to the `log` method to
- * reduce boilerplate code that a simple Logger that does the same thing with
- * messages regardless of the error level has to implement.
- */
-abstract class AbstractLogger implements LoggerInterface
-{
-    /**
-     * System is unusable.
-     *
-     * @param string  $message
-     * @param mixed[] $context
-     *
-     * @return void
-     */
-    public function emergency($message, array $context = array())
-    {
-        $this->log(LogLevel::EMERGENCY, $message, $context);
-    }
-
-    /**
-     * Action must be taken immediately.
-     *
-     * Example: Entire website down, database unavailable, etc. This should
-     * trigger the SMS alerts and wake you up.
-     *
-     * @param string  $message
-     * @param mixed[] $context
-     *
-     * @return void
-     */
-    public function alert($message, array $context = array())
-    {
-        $this->log(LogLevel::ALERT, $message, $context);
-    }
-
-    /**
-     * Critical conditions.
-     *
-     * Example: Application component unavailable, unexpected exception.
-     *
-     * @param string  $message
-     * @param mixed[] $context
-     *
-     * @return void
-     */
-    public function critical($message, array $context = array())
-    {
-        $this->log(LogLevel::CRITICAL, $message, $context);
-    }
-
-    /**
-     * Runtime errors that do not require immediate action but should typically
-     * be logged and monitored.
-     *
-     * @param string  $message
-     * @param mixed[] $context
-     *
-     * @return void
-     */
-    public function error($message, array $context = array())
-    {
-        $this->log(LogLevel::ERROR, $message, $context);
-    }
-
-    /**
-     * Exceptional occurrences that are not errors.
-     *
-     * Example: Use of deprecated APIs, poor use of an API, undesirable things
-     * that are not necessarily wrong.
-     *
-     * @param string  $message
-     * @param mixed[] $context
-     *
-     * @return void
-     */
-    public function warning($message, array $context = array())
-    {
-        $this->log(LogLevel::WARNING, $message, $context);
-    }
-
-    /**
-     * Normal but significant events.
-     *
-     * @param string  $message
-     * @param mixed[] $context
-     *
-     * @return void
-     */
-    public function notice($message, array $context = array())
-    {
-        $this->log(LogLevel::NOTICE, $message, $context);
-    }
-
-    /**
-     * Interesting events.
-     *
-     * Example: User logs in, SQL logs.
-     *
-     * @param string  $message
-     * @param mixed[] $context
-     *
-     * @return void
-     */
-    public function info($message, array $context = array())
-    {
-        $this->log(LogLevel::INFO, $message, $context);
-    }
-
-    /**
-     * Detailed debug information.
-     *
-     * @param string  $message
-     * @param mixed[] $context
-     *
-     * @return void
-     */
-    public function debug($message, array $context = array())
-    {
-        $this->log(LogLevel::DEBUG, $message, $context);
-    }
-}
diff --git a/Psr/Log/Test/DummyTest.php b/Psr/Log/Test/DummyTest.php
deleted file mode 100644
index 9638c11..0000000
--- a/Psr/Log/Test/DummyTest.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php
-
-namespace Psr\Log\Test;
-
-/**
- * This class is internal and does not follow the BC promise.
- *
- * Do NOT use this class in any way.
- *
- * @internal
- */
-class DummyTest
-{
-    public function __toString()
-    {
-        return 'DummyTest';
-    }
-}
diff --git a/Psr/Log/Test/LoggerInterfaceTest.php b/Psr/Log/Test/LoggerInterfaceTest.php
deleted file mode 100644
index e1e5354..0000000
--- a/Psr/Log/Test/LoggerInterfaceTest.php
+++ /dev/null
@@ -1,138 +0,0 @@
-<?php
-
-namespace Psr\Log\Test;
-
-use Psr\Log\LoggerInterface;
-use Psr\Log\LogLevel;
-use PHPUnit\Framework\TestCase;
-
-/**
- * Provides a base test class for ensuring compliance with the LoggerInterface.
- *
- * Implementors can extend the class and implement abstract methods to run this
- * as part of their test suite.
- */
-abstract class LoggerInterfaceTest extends TestCase
-{
-    /**
-     * @return LoggerInterface
-     */
-    abstract public function getLogger();
-
-    /**
-     * This must return the log messages in order.
-     *
-     * The simple formatting of the messages is: "<LOG LEVEL> <MESSAGE>".
-     *
-     * Example ->error('Foo') would yield "error Foo".
-     *
-     * @return string[]
-     */
-    abstract public function getLogs();
-
-    public function testImplements()
-    {
-        $this->assertInstanceOf('Psr\Log\LoggerInterface', $this->getLogger());
-    }
-
-    /**
-     * @dataProvider provideLevelsAndMessages
-     */
-    public function testLogsAtAllLevels($level, $message)
-    {
-        $logger = $this->getLogger();
-        $logger->{$level}($message, array('user' => 'Bob'));
-        $logger->log($level, $message, array('user' => 'Bob'));
-
-        $expected = array(
-            $level.' message of level '.$level.' with context: Bob',
-            $level.' message of level '.$level.' with context: Bob',
-        );
-        $this->assertEquals($expected, $this->getLogs());
-    }
-
-    public function provideLevelsAndMessages()
-    {
-        return array(
-            LogLevel::EMERGENCY => array(LogLevel::EMERGENCY, 'message of level emergency with context: {user}'),
-            LogLevel::ALERT => array(LogLevel::ALERT, 'message of level alert with context: {user}'),
-            LogLevel::CRITICAL => array(LogLevel::CRITICAL, 'message of level critical with context: {user}'),
-            LogLevel::ERROR => array(LogLevel::ERROR, 'message of level error with context: {user}'),
-            LogLevel::WARNING => array(LogLevel::WARNING, 'message of level warning with context: {user}'),
-            LogLevel::NOTICE => array(LogLevel::NOTICE, 'message of level notice with context: {user}'),
-            LogLevel::INFO => array(LogLevel::INFO, 'message of level info with context: {user}'),
-            LogLevel::DEBUG => array(LogLevel::DEBUG, 'message of level debug with context: {user}'),
-        );
-    }
-
-    /**
-     * @expectedException \Psr\Log\InvalidArgumentException
-     */
-    public function testThrowsOnInvalidLevel()
-    {
-        $logger = $this->getLogger();
-        $logger->log('invalid level', 'Foo');
-    }
-
-    public function testContextReplacement()
-    {
-        $logger = $this->getLogger();
-        $logger->info('{Message {nothing} {user} {foo.bar} a}', array('user' => 'Bob', 'foo.bar' => 'Bar'));
-
-        $expected = array('info {Message {nothing} Bob Bar a}');
-        $this->assertEquals($expected, $this->getLogs());
-    }
-
-    public function testObjectCastToString()
-    {
-        if (method_exists($this, 'createPartialMock')) {
-            $dummy = $this->createPartialMock('Psr\Log\Test\DummyTest', array('__toString'));
-        } else {
-            $dummy = $this->getMock('Psr\Log\Test\DummyTest', array('__toString'));
-        }
-        $dummy->expects($this->once())
-            ->method('__toString')
-            ->will($this->returnValue('DUMMY'));
-
-        $this->getLogger()->warning($dummy);
-
-        $expected = array('warning DUMMY');
-        $this->assertEquals($expected, $this->getLogs());
-    }
-
-    public function testContextCanContainAnything()
-    {
-        $closed = fopen('php://memory', 'r');
-        fclose($closed);
-
-        $context = array(
-            'bool' => true,
-            'null' => null,
-            'string' => 'Foo',
-            'int' => 0,
-            'float' => 0.5,
-            'nested' => array('with object' => new DummyTest),
-            'object' => new \DateTime,
-            'resource' => fopen('php://memory', 'r'),
-            'closed' => $closed,
-        );
-
-        $this->getLogger()->warning('Crazy context data', $context);
-
-        $expected = array('warning Crazy context data');
-        $this->assertEquals($expected, $this->getLogs());
-    }
-
-    public function testContextExceptionKeyCanBeExceptionOrOtherValues()
-    {
-        $logger = $this->getLogger();
-        $logger->warning('Random message', array('exception' => 'oops'));
-        $logger->critical('Uncaught Exception!', array('exception' => new \LogicException('Fail')));
-
-        $expected = array(
-            'warning Random message',
-            'critical Uncaught Exception!'
-        );
-        $this->assertEquals($expected, $this->getLogs());
-    }
-}
diff --git a/Psr/Log/Test/TestLogger.php b/Psr/Log/Test/TestLogger.php
deleted file mode 100644
index 1be3230..0000000
--- a/Psr/Log/Test/TestLogger.php
+++ /dev/null
@@ -1,147 +0,0 @@
-<?php
-
-namespace Psr\Log\Test;
-
-use Psr\Log\AbstractLogger;
-
-/**
- * Used for testing purposes.
- *
- * It records all records and gives you access to them for verification.
- *
- * @method bool hasEmergency($record)
- * @method bool hasAlert($record)
- * @method bool hasCritical($record)
- * @method bool hasError($record)
- * @method bool hasWarning($record)
- * @method bool hasNotice($record)
- * @method bool hasInfo($record)
- * @method bool hasDebug($record)
- *
- * @method bool hasEmergencyRecords()
- * @method bool hasAlertRecords()
- * @method bool hasCriticalRecords()
- * @method bool hasErrorRecords()
- * @method bool hasWarningRecords()
- * @method bool hasNoticeRecords()
- * @method bool hasInfoRecords()
- * @method bool hasDebugRecords()
- *
- * @method bool hasEmergencyThatContains($message)
- * @method bool hasAlertThatContains($message)
- * @method bool hasCriticalThatContains($message)
- * @method bool hasErrorThatContains($message)
- * @method bool hasWarningThatContains($message)
- * @method bool hasNoticeThatContains($message)
- * @method bool hasInfoThatContains($message)
- * @method bool hasDebugThatContains($message)
- *
- * @method bool hasEmergencyThatMatches($message)
- * @method bool hasAlertThatMatches($message)
- * @method bool hasCriticalThatMatches($message)
- * @method bool hasErrorThatMatches($message)
- * @method bool hasWarningThatMatches($message)
- * @method bool hasNoticeThatMatches($message)
- * @method bool hasInfoThatMatches($message)
- * @method bool hasDebugThatMatches($message)
- *
- * @method bool hasEmergencyThatPasses($message)
- * @method bool hasAlertThatPasses($message)
- * @method bool hasCriticalThatPasses($message)
- * @method bool hasErrorThatPasses($message)
- * @method bool hasWarningThatPasses($message)
- * @method bool hasNoticeThatPasses($message)
- * @method bool hasInfoThatPasses($message)
- * @method bool hasDebugThatPasses($message)
- */
-class TestLogger extends AbstractLogger
-{
-    /**
-     * @var array
-     */
-    public $records = [];
-
-    public $recordsByLevel = [];
-
-    /**
-     * @inheritdoc
-     */
-    public function log($level, $message, array $context = [])
-    {
-        $record = [
-            'level' => $level,
-            'message' => $message,
-            'context' => $context,
-        ];
-
-        $this->recordsByLevel[$record['level']][] = $record;
-        $this->records[] = $record;
-    }
-
-    public function hasRecords($level)
-    {
-        return isset($this->recordsByLevel[$level]);
-    }
-
-    public function hasRecord($record, $level)
-    {
-        if (is_string($record)) {
-            $record = ['message' => $record];
-        }
-        return $this->hasRecordThatPasses(function ($rec) use ($record) {
-            if ($rec['message'] !== $record['message']) {
-                return false;
-            }
-            if (isset($record['context']) && $rec['context'] !== $record['context']) {
-                return false;
-            }
-            return true;
-        }, $level);
-    }
-
-    public function hasRecordThatContains($message, $level)
-    {
-        return $this->hasRecordThatPasses(function ($rec) use ($message) {
-            return strpos($rec['message'], $message) !== false;
-        }, $level);
-    }
-
-    public function hasRecordThatMatches($regex, $level)
-    {
-        return $this->hasRecordThatPasses(function ($rec) use ($regex) {
-            return preg_match($regex, $rec['message']) > 0;
-        }, $level);
-    }
-
-    public function hasRecordThatPasses(callable $predicate, $level)
-    {
-        if (!isset($this->recordsByLevel[$level])) {
-            return false;
-        }
-        foreach ($this->recordsByLevel[$level] as $i => $rec) {
-            if (call_user_func($predicate, $rec, $i)) {
-                return true;
-            }
-        }
-        return false;
-    }
-
-    public function __call($method, $args)
-    {
-        if (preg_match('/(.*)(Debug|Info|Notice|Warning|Error|Critical|Alert|Emergency)(.*)/', $method, $matches) > 0) {
-            $genericMethod = $matches[1] . ('Records' !== $matches[3] ? 'Record' : '') . $matches[3];
-            $level = strtolower($matches[2]);
-            if (method_exists($this, $genericMethod)) {
-                $args[] = $level;
-                return call_user_func_array([$this, $genericMethod], $args);
-            }
-        }
-        throw new \BadMethodCallException('Call to undefined method ' . get_class($this) . '::' . $method . '()');
-    }
-
-    public function reset()
-    {
-        $this->records = [];
-        $this->recordsByLevel = [];
-    }
-}
diff --git a/composer.json b/composer.json
index ca05695..f3f0667 100644
--- a/composer.json
+++ b/composer.json
@@ -11,16 +11,16 @@
         }
     ],
     "require": {
-        "php": ">=5.3.0"
+        "php": ">=8.0.0"
     },
     "autoload": {
         "psr-4": {
-            "Psr\\Log\\": "Psr/Log/"
+            "Psr\\Log\\": "src"
         }
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "1.1.x-dev"
+            "dev-master": "2.0.x-dev"
         }
     }
 }
diff --git a/src/AbstractLogger.php b/src/AbstractLogger.php
new file mode 100644
index 0000000..d60a091
--- /dev/null
+++ b/src/AbstractLogger.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace Psr\Log;
+
+/**
+ * This is a simple Logger implementation that other Loggers can inherit from.
+ *
+ * It simply delegates all log-level-specific methods to the `log` method to
+ * reduce boilerplate code that a simple Logger that does the same thing with
+ * messages regardless of the error level has to implement.
+ */
+abstract class AbstractLogger implements LoggerInterface
+{
+    use LoggerTrait;
+}
diff --git a/Psr/Log/InvalidArgumentException.php b/src/InvalidArgumentException.php
similarity index 100%
rename from Psr/Log/InvalidArgumentException.php
rename to src/InvalidArgumentException.php
diff --git a/Psr/Log/LogLevel.php b/src/LogLevel.php
similarity index 100%
rename from Psr/Log/LogLevel.php
rename to src/LogLevel.php
diff --git a/Psr/Log/LoggerAwareInterface.php b/src/LoggerAwareInterface.php
similarity index 100%
rename from Psr/Log/LoggerAwareInterface.php
rename to src/LoggerAwareInterface.php
diff --git a/Psr/Log/LoggerAwareTrait.php b/src/LoggerAwareTrait.php
similarity index 88%
rename from Psr/Log/LoggerAwareTrait.php
rename to src/LoggerAwareTrait.php
index 82bf45c..5f1553a 100644
--- a/Psr/Log/LoggerAwareTrait.php
+++ b/src/LoggerAwareTrait.php
@@ -12,7 +12,7 @@ trait LoggerAwareTrait
      *
      * @var LoggerInterface|null
      */
-    protected $logger;
+    protected ?LoggerInterface $logger = null;
 
     /**
      * Sets a logger.
diff --git a/Psr/Log/LoggerInterface.php b/src/LoggerInterface.php
similarity index 67%
rename from Psr/Log/LoggerInterface.php
rename to src/LoggerInterface.php
index 2206cfd..b4d062b 100644
--- a/Psr/Log/LoggerInterface.php
+++ b/src/LoggerInterface.php
@@ -22,12 +22,12 @@ interface LoggerInterface
     /**
      * System is unusable.
      *
-     * @param string  $message
+     * @param string|\Stringable $message
      * @param mixed[] $context
      *
      * @return void
      */
-    public function emergency($message, array $context = array());
+    public function emergency(string|\Stringable $message, array $context = []);
 
     /**
      * Action must be taken immediately.
@@ -35,35 +35,35 @@ public function emergency($message, array $context = array());
      * Example: Entire website down, database unavailable, etc. This should
      * trigger the SMS alerts and wake you up.
      *
-     * @param string  $message
+     * @param string|\Stringable $message
      * @param mixed[] $context
      *
      * @return void
      */
-    public function alert($message, array $context = array());
+    public function alert(string|\Stringable $message, array $context = []);
 
     /**
      * Critical conditions.
      *
      * Example: Application component unavailable, unexpected exception.
      *
-     * @param string  $message
+     * @param string|\Stringable $message
      * @param mixed[] $context
      *
      * @return void
      */
-    public function critical($message, array $context = array());
+    public function critical(string|\Stringable $message, array $context = []);
 
     /**
      * Runtime errors that do not require immediate action but should typically
      * be logged and monitored.
      *
-     * @param string  $message
+     * @param string|\Stringable $message
      * @param mixed[] $context
      *
      * @return void
      */
-    public function error($message, array $context = array());
+    public function error(string|\Stringable $message, array $context = []);
 
     /**
      * Exceptional occurrences that are not errors.
@@ -71,55 +71,55 @@ public function error($message, array $context = array());
      * Example: Use of deprecated APIs, poor use of an API, undesirable things
      * that are not necessarily wrong.
      *
-     * @param string  $message
+     * @param string|\Stringable $message
      * @param mixed[] $context
      *
      * @return void
      */
-    public function warning($message, array $context = array());
+    public function warning(string|\Stringable $message, array $context = []);
 
     /**
      * Normal but significant events.
      *
-     * @param string  $message
+     * @param string|\Stringable $message
      * @param mixed[] $context
      *
      * @return void
      */
-    public function notice($message, array $context = array());
+    public function notice(string|\Stringable $message, array $context = []);
 
     /**
      * Interesting events.
      *
      * Example: User logs in, SQL logs.
      *
-     * @param string  $message
+     * @param string|\Stringable $message
      * @param mixed[] $context
      *
      * @return void
      */
-    public function info($message, array $context = array());
+    public function info(string|\Stringable $message, array $context = []);
 
     /**
      * Detailed debug information.
      *
-     * @param string  $message
+     * @param string|\Stringable $message
      * @param mixed[] $context
      *
      * @return void
      */
-    public function debug($message, array $context = array());
+    public function debug(string|\Stringable $message, array $context = []);
 
     /**
      * Logs with an arbitrary level.
      *
      * @param mixed   $level
-     * @param string  $message
+     * @param string|\Stringable $message
      * @param mixed[] $context
      *
      * @return void
      *
      * @throws \Psr\Log\InvalidArgumentException
      */
-    public function log($level, $message, array $context = array());
+    public function log($level, string|\Stringable $message, array $context = []);
 }
diff --git a/Psr/Log/LoggerTrait.php b/src/LoggerTrait.php
similarity index 70%
rename from Psr/Log/LoggerTrait.php
rename to src/LoggerTrait.php
index e392fef..920bda7 100644
--- a/Psr/Log/LoggerTrait.php
+++ b/src/LoggerTrait.php
@@ -15,12 +15,12 @@ trait LoggerTrait
     /**
      * System is unusable.
      *
-     * @param string $message
+     * @param string|\Stringable $message
      * @param array  $context
      *
      * @return void
      */
-    public function emergency($message, array $context = array())
+    public function emergency(string|\Stringable $message, array $context = [])
     {
         $this->log(LogLevel::EMERGENCY, $message, $context);
     }
@@ -31,12 +31,12 @@ public function emergency($message, array $context = array())
      * Example: Entire website down, database unavailable, etc. This should
      * trigger the SMS alerts and wake you up.
      *
-     * @param string $message
+     * @param string|\Stringable $message
      * @param array  $context
      *
      * @return void
      */
-    public function alert($message, array $context = array())
+    public function alert(string|\Stringable $message, array $context = [])
     {
         $this->log(LogLevel::ALERT, $message, $context);
     }
@@ -46,12 +46,12 @@ public function alert($message, array $context = array())
      *
      * Example: Application component unavailable, unexpected exception.
      *
-     * @param string $message
+     * @param string|\Stringable $message
      * @param array  $context
      *
      * @return void
      */
-    public function critical($message, array $context = array())
+    public function critical(string|\Stringable $message, array $context = [])
     {
         $this->log(LogLevel::CRITICAL, $message, $context);
     }
@@ -60,12 +60,12 @@ public function critical($message, array $context = array())
      * Runtime errors that do not require immediate action but should typically
      * be logged and monitored.
      *
-     * @param string $message
+     * @param string|\Stringable $message
      * @param array  $context
      *
      * @return void
      */
-    public function error($message, array $context = array())
+    public function error(string|\Stringable $message, array $context = [])
     {
         $this->log(LogLevel::ERROR, $message, $context);
     }
@@ -76,12 +76,12 @@ public function error($message, array $context = array())
      * Example: Use of deprecated APIs, poor use of an API, undesirable things
      * that are not necessarily wrong.
      *
-     * @param string $message
+     * @param string|\Stringable $message
      * @param array  $context
      *
      * @return void
      */
-    public function warning($message, array $context = array())
+    public function warning(string|\Stringable $message, array $context = [])
     {
         $this->log(LogLevel::WARNING, $message, $context);
     }
@@ -89,12 +89,12 @@ public function warning($message, array $context = array())
     /**
      * Normal but significant events.
      *
-     * @param string $message
+     * @param string|\Stringable $message
      * @param array  $context
      *
      * @return void
      */
-    public function notice($message, array $context = array())
+    public function notice(string|\Stringable $message, array $context = [])
     {
         $this->log(LogLevel::NOTICE, $message, $context);
     }
@@ -104,12 +104,12 @@ public function notice($message, array $context = array())
      *
      * Example: User logs in, SQL logs.
      *
-     * @param string $message
+     * @param string|\Stringable $message
      * @param array  $context
      *
      * @return void
      */
-    public function info($message, array $context = array())
+    public function info(string|\Stringable $message, array $context = [])
     {
         $this->log(LogLevel::INFO, $message, $context);
     }
@@ -117,12 +117,12 @@ public function info($message, array $context = array())
     /**
      * Detailed debug information.
      *
-     * @param string $message
+     * @param string|\Stringable $message
      * @param array  $context
      *
      * @return void
      */
-    public function debug($message, array $context = array())
+    public function debug(string|\Stringable $message, array $context = [])
     {
         $this->log(LogLevel::DEBUG, $message, $context);
     }
@@ -131,12 +131,12 @@ public function debug($message, array $context = array())
      * Logs with an arbitrary level.
      *
      * @param mixed  $level
-     * @param string $message
+     * @param string|\Stringable $message
      * @param array  $context
      *
      * @return void
      *
      * @throws \Psr\Log\InvalidArgumentException
      */
-    abstract public function log($level, $message, array $context = array());
+    abstract public function log($level, string|\Stringable $message, array $context = []);
 }
diff --git a/Psr/Log/NullLogger.php b/src/NullLogger.php
similarity index 79%
rename from Psr/Log/NullLogger.php
rename to src/NullLogger.php
index c8f7293..5607705 100644
--- a/Psr/Log/NullLogger.php
+++ b/src/NullLogger.php
@@ -16,14 +16,14 @@ class NullLogger extends AbstractLogger
      * Logs with an arbitrary level.
      *
      * @param mixed  $level
-     * @param string $message
-     * @param array  $context
+     * @param string|\Stringable $message
+     * @param array $context
      *
      * @return void
      *
      * @throws \Psr\Log\InvalidArgumentException
      */
-    public function log($level, $message, array $context = array())
+    public function log($level, string|\Stringable $message, array $context = [])
     {
         // noop
     }