diff --git a/composer.json b/composer.json
index b4b7486..5d0ad01 100644
--- a/composer.json
+++ b/composer.json
@@ -30,7 +30,7 @@
         "ergebnis/composer-normalize": "^2.45",
         "ergebnis/php-cs-fixer-config": "^6.45.0",
         "http-interop/http-factory-guzzle": "^1.2",
-        "phpstan/phpstan": "^2.1",
+        "phpstan/phpstan": "^2.1.29",
         "phpunit/phpunit": "^10.4.2",
         "psr/http-message": "^1.1.0",
         "roave/security-advisories": "dev-latest",
diff --git a/composer.lock b/composer.lock
index 7a39670..8e9d103 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": "565d61d07bd97d87e3532b1ed4068a9b",
+    "content-hash": "aee87adf84ba5e52da0a3528ddd23377",
     "packages": [
         {
             "name": "guzzlehttp/guzzle",
@@ -4030,16 +4030,16 @@
         },
         {
             "name": "phpstan/phpstan",
-            "version": "2.1.11",
+            "version": "2.1.29",
             "source": {
                 "type": "git",
-                "url": "https://github.com/phpstan/phpstan.git",
-                "reference": "8ca5f79a8f63c49b2359065832a654e1ec70ac30"
+                "url": "https://github.com/phpstan/phpstan-phar-composer-source.git",
+                "reference": "git"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/8ca5f79a8f63c49b2359065832a654e1ec70ac30",
-                "reference": "8ca5f79a8f63c49b2359065832a654e1ec70ac30",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/d618573eed4a1b6b75e37b2e0b65ac65c885d88e",
+                "reference": "d618573eed4a1b6b75e37b2e0b65ac65c885d88e",
                 "shasum": ""
             },
             "require": {
@@ -4084,7 +4084,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2025-03-24T13:45:00+00:00"
+            "time": "2025-09-25T06:58:18+00:00"
         },
         {
             "name": "phpunit/php-code-coverage",
diff --git a/src/Core/Engine.php b/src/Core/Engine.php
index 5650ba0..ec884ad 100644
--- a/src/Core/Engine.php
+++ b/src/Core/Engine.php
@@ -49,6 +49,8 @@ public function collect(Run $run): array
 
         $this->start($run);
 
+        $this->eventDispatcher->removeSubscriber($extension);
+
         return $extension->getScrapedItems();
     }
 
@@ -68,6 +70,8 @@ public function start(Run $run): void
         }
 
         $this->work($run);
+
+        $this->cleanup($run);
     }
 
     private function work(Run $run): void
@@ -156,4 +160,11 @@ private function configure(Run $run): void
             $this->eventDispatcher->addSubscriber($extension);
         }
     }
+
+    private function cleanup(Run $run): void
+    {
+        foreach ($run->extensions as $extension) {
+            $this->eventDispatcher->removeSubscriber($extension);
+        }
+    }
 }
diff --git a/src/Downloader/Middleware/RequestDeduplicationMiddleware.php b/src/Downloader/Middleware/RequestDeduplicationMiddleware.php
index 2d0dbaf..ddcab5f 100644
--- a/src/Downloader/Middleware/RequestDeduplicationMiddleware.php
+++ b/src/Downloader/Middleware/RequestDeduplicationMiddleware.php
@@ -48,7 +48,6 @@ public function handleRequest(Request $request): Request
             $replaceFlags |= \HTTP_URL_STRIP_QUERY;
         }
 
-        /** @phpstan-ignore argument.type */
         $uri = http_build_url($uri, $parts, $replaceFlags);
 
         if (\in_array($uri, $this->seenUris, true)) {
diff --git a/src/Testing/FakeLogger.php b/src/Testing/FakeLogger.php
index b7ab67f..88dd476 100644
--- a/src/Testing/FakeLogger.php
+++ b/src/Testing/FakeLogger.php
@@ -132,4 +132,19 @@ public function messageWasLogged(string $level, string $message, ?array $context
                 && (null === $context || $log['context'] === $context);
         }));
     }
+
+    /**
+     * @param array<array-key, mixed> $context
+     */
+    public function countMessages(string $level, string $message, ?array $context = null): int
+    {
+        if (empty($this->logs[$level])) {
+            return 0;
+        }
+
+        return \count(\array_filter($this->logs[$level], static function (array $log) use ($message, $context) {
+            return $log['message'] === $message
+                && (null === $context || $log['context'] === $context);
+        }));
+    }
 }
diff --git a/tests/Core/EngineTest.php b/tests/Core/EngineTest.php
index a34bb3d..d87cbb6 100644
--- a/tests/Core/EngineTest.php
+++ b/tests/Core/EngineTest.php
@@ -214,6 +214,40 @@ public function testRegisterExtensions(): void
         ]));
     }
 
+    public function testOnlyOneMessageLoggedPerRequestWhenSpiderDispatchedBackToBack(): void
+    {
+        $url = 'http://localhost:8000/test1';
+
+        $logger = new FakeLogger();
+        $run = new Run(
+            [
+                $this->makeRequest($url),
+            ],
+            '::namespace::',
+            extensions: [new LoggerExtension($logger)],
+        );
+
+        $logger2 = new FakeLogger();
+        $run2 = new Run(
+            [
+                $this->makeRequest($url),
+            ],
+            '::namespace::',
+            extensions: [new LoggerExtension($logger2)],
+        );
+
+        $this->engine->start($run);
+
+        self::assertSame(1, $logger->countMessages('info', 'Dispatching request', ['uri' => $url]));
+
+        $this->engine->start($run2);
+
+        self::assertSame(1, $logger2->countMessages('info', 'Dispatching request', ['uri' => $url]));
+
+        // Verify no duplicate messages in the first logger (should still be 1)
+        self::assertSame(1, $logger->countMessages('info', 'Dispatching request', ['uri' => $url]));
+    }
+
     public function testCollectAndReturnScrapedItems(): void
     {
         $parseCallback = static function () {