diff --git a/composer.json b/composer.json
index f289993..91fbd05 100644
--- a/composer.json
+++ b/composer.json
@@ -20,6 +20,7 @@
   ],
   "require": {
     "php": "~8.2.0 || ~8.3.0 || ~8.4.0  || ~8.5.0",
+    "psr/log": "^1.1 || ^2.0 || ^3.0",
     "symfony/event-dispatcher": "^5.4.26 || ^6.4.0 || ^7.0.0 || ^8.0.0"
   },
   "require-dev": {
@@ -33,6 +34,9 @@
     "symfony/var-dumper": "^5.4.29 || ^6.4.0 || ^7.0.0 || ^8.0.0",
     "wnx/commonmark-markdown-renderer": "^1.6"
   },
+  "suggest": {
+    "ext-pcntl": "Required to stop the worker gracefully on SIGTERM"
+  },
   "config": {
     "preferred-install": {
       "*": "dist"
diff --git a/composer.lock b/composer.lock
index 70b1b9c..ca3b884 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "293e4cc7b82100df5338843829efec9a",
+    "content-hash": "1ba9db2e4b9681a4e4fc4e04047375ef",
     "packages": [
         {
             "name": "psr/event-dispatcher",
@@ -56,6 +56,56 @@
             },
             "time": "2019-01-08T18:20:26+00:00"
         },
+        {
+            "name": "psr/log",
+            "version": "3.0.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/log.git",
+                "reference": "f16e1d5863e37f8d8c2a01719f5b34baa2b714d3"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/php-fig/log/zipball/f16e1d5863e37f8d8c2a01719f5b34baa2b714d3",
+                "reference": "f16e1d5863e37f8d8c2a01719f5b34baa2b714d3",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=8.0.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "3.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Psr\\Log\\": "src"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "https://www.php-fig.org/"
+                }
+            ],
+            "description": "Common interface for logging libraries",
+            "homepage": "https://github.com/php-fig/log",
+            "keywords": [
+                "log",
+                "psr",
+                "psr-3"
+            ],
+            "support": {
+                "source": "https://github.com/php-fig/log/tree/3.0.2"
+            },
+            "time": "2024-09-11T13:17:53+00:00"
+        },
         {
             "name": "symfony/deprecation-contracts",
             "version": "v3.7.1",
@@ -3100,56 +3150,6 @@
             },
             "time": "2021-11-05T16:47:00+00:00"
         },
-        {
-            "name": "psr/log",
-            "version": "3.0.2",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/php-fig/log.git",
-                "reference": "f16e1d5863e37f8d8c2a01719f5b34baa2b714d3"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/php-fig/log/zipball/f16e1d5863e37f8d8c2a01719f5b34baa2b714d3",
-                "reference": "f16e1d5863e37f8d8c2a01719f5b34baa2b714d3",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=8.0.0"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "3.x-dev"
-                }
-            },
-            "autoload": {
-                "psr-4": {
-                    "Psr\\Log\\": "src"
-                }
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "PHP-FIG",
-                    "homepage": "https://www.php-fig.org/"
-                }
-            ],
-            "description": "Common interface for logging libraries",
-            "homepage": "https://github.com/php-fig/log",
-            "keywords": [
-                "log",
-                "psr",
-                "psr-3"
-            ],
-            "support": {
-                "source": "https://github.com/php-fig/log/tree/3.0.2"
-            },
-            "time": "2024-09-11T13:17:53+00:00"
-        },
         {
             "name": "sanmai/di-container",
             "version": "0.1.23",
diff --git a/src/Listener/StopWorkerOnMemoryLimitListener.php b/src/Listener/StopWorkerOnMemoryLimitListener.php
index 0e8644e..bbf37db 100644
--- a/src/Listener/StopWorkerOnMemoryLimitListener.php
+++ b/src/Listener/StopWorkerOnMemoryLimitListener.php
@@ -28,7 +28,7 @@ public function onWorkerRunning(WorkerRunningEvent $event): void
         }
 
         $this->logger?->info(
-            'Worker stopped due to memory limit of {limit} bytes exceeded ({memory} bytes used)',
+            'Worker stopped due to memory limit of {limit} exceeded ({memory} used)',
             ['limit' => $this->memoryLimit->formatted(), 'memory' => $usedMemory->formatted()],
         );
 
diff --git a/src/Listener/StopWorkerOnSigtermSignalListener.php b/src/Listener/StopWorkerOnSigtermSignalListener.php
index 9abdb9a..2ca5147 100644
--- a/src/Listener/StopWorkerOnSigtermSignalListener.php
+++ b/src/Listener/StopWorkerOnSigtermSignalListener.php
@@ -9,6 +9,7 @@
 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
 
 use function function_exists;
+use function pcntl_async_signals;
 use function pcntl_signal;
 
 use const SIGTERM;
@@ -22,6 +23,8 @@ public function __construct(
 
     public function onWorkerStarted(WorkerStartedEvent $event): void
     {
+        pcntl_async_signals(true);
+
         pcntl_signal(SIGTERM, function () use ($event): void {
             $this->logger?->info('Received SIGTERM signal.');
             $event->worker->stop();
diff --git a/src/Worker.php b/src/Worker.php
index 04d81d2..11a6ccc 100644
--- a/src/Worker.php
+++ b/src/Worker.php
@@ -6,7 +6,7 @@
 
 interface Worker
 {
-    /** @param 0|positive-int $sleepTimer sleepTimer in microseconds */
+    /** @param 0|positive-int $sleepTimer sleepTimer in milliseconds */
     public function run(int $sleepTimer = 1000): void;
 
     public function stop(): void;
diff --git a/tests/Unit/Listener/StopWorkerOnSigtermSignalListenerTest.php b/tests/Unit/Listener/StopWorkerOnSigtermSignalListenerTest.php
new file mode 100644
index 0000000..973406d
--- /dev/null
+++ b/tests/Unit/Listener/StopWorkerOnSigtermSignalListenerTest.php
@@ -0,0 +1,66 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Patchlevel\Worker\Tests\Unit\Listener;
+
+use Patchlevel\Worker\DefaultWorker;
+use Patchlevel\Worker\Listener\StopWorkerOnSigtermSignalListener;
+use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\Attributes\RequiresFunction;
+use PHPUnit\Framework\TestCase;
+use Psr\Log\LoggerInterface;
+use Symfony\Component\EventDispatcher\EventDispatcher;
+
+use function getmypid;
+use function pcntl_signal;
+use function posix_kill;
+
+use const SIG_DFL;
+use const SIGTERM;
+
+#[CoversClass(StopWorkerOnSigtermSignalListener::class)]
+#[RequiresFunction('pcntl_signal')]
+#[RequiresFunction('posix_kill')]
+final class StopWorkerOnSigtermSignalListenerTest extends TestCase
+{
+    protected function tearDown(): void
+    {
+        pcntl_signal(SIGTERM, SIG_DFL);
+    }
+
+    public function testStopOnSigterm(): void
+    {
+        $logger = $this->createMock(LoggerInterface::class);
+        $logger
+            ->expects($this->once())
+            ->method('info')
+            ->with('Received SIGTERM signal.');
+
+        $eventDispatcher = new EventDispatcher();
+        $eventDispatcher->addSubscriber(new StopWorkerOnSigtermSignalListener($logger));
+
+        $calls = 0;
+
+        $worker = new DefaultWorker(
+            static function (callable $stop) use (&$calls): void {
+                $calls++;
+
+                if ($calls === 1) {
+                    posix_kill((int)getmypid(), SIGTERM);
+                }
+
+                if ($calls < 5) {
+                    return;
+                }
+
+                $stop();
+            },
+            $eventDispatcher,
+        );
+
+        $worker->run(0);
+
+        self::assertSame(1, $calls);
+    }
+}