diff --git a/scrapy/utils/benchserver.py b/scrapy/utils/benchserver.py
index 32bc2e38c..750d3c093 100644
--- a/scrapy/utils/benchserver.py
+++ b/scrapy/utils/benchserver.py
@@ -37,11 +37,11 @@ if __name__ == "__main__":
 
     root = Root()
     factory = Site(root)
-    httpPort = reactor.listenTCP(8998, Site(root))
+    httpPort = reactor.listenTCP(8998, Site(root))  # type: ignore[attr-defined]
 
     def _print_listening():
         httpHost = httpPort.getHost()
         print(f"Bench server at http://{httpHost.host}:{httpHost.port}")
 
-    reactor.callWhenRunning(_print_listening)
-    reactor.run()
+    reactor.callWhenRunning(_print_listening)  # type: ignore[attr-defined]
+    reactor.run()  # type: ignore[attr-defined]
diff --git a/tests/CrawlerRunner/ip_address.py b/tests/CrawlerRunner/ip_address.py
index 26db16dd6..b9a4485a9 100644
--- a/tests/CrawlerRunner/ip_address.py
+++ b/tests/CrawlerRunner/ip_address.py
@@ -41,10 +41,10 @@ if __name__ == "__main__":
         url = f"http://not.a.real.domain:{port}/echo"
 
         servers = [(mock_dns_server.host, mock_dns_server.port)]
-        reactor.installResolver(createResolver(servers=servers))
+        reactor.installResolver(createResolver(servers=servers))  # type: ignore[attr-defined]
 
         configure_logging()
         runner = CrawlerRunner()
         d = runner.crawl(LocalhostSpider, url=url)
-        d.addBoth(lambda _: reactor.stop())
-        reactor.run()
+        d.addBoth(lambda _: reactor.stop())  # type: ignore[attr-defined]
+        reactor.run()  # type: ignore[attr-defined]
diff --git a/tests/mockserver.py b/tests/mockserver.py
index e07ae8797..185897373 100644
--- a/tests/mockserver.py
+++ b/tests/mockserver.py
@@ -10,6 +10,7 @@ from urllib.parse import urlencode
 
 from OpenSSL import SSL
 from twisted.internet import defer, reactor, ssl
+from twisted.internet.protocol import ServerFactory
 from twisted.internet.task import deferLater
 from twisted.names import dns, error
 from twisted.names.server import DNSServerFactory
@@ -369,12 +370,14 @@ if __name__ == "__main__":
     )
     args = parser.parse_args()
 
+    factory: ServerFactory
+
     if args.type == "http":
         root = Root()
         factory = Site(root)
-        httpPort = reactor.listenTCP(0, factory)
+        httpPort = reactor.listenTCP(0, factory)  # type: ignore[attr-defined]
         contextFactory = ssl_context_factory()
-        httpsPort = reactor.listenSSL(0, factory, contextFactory)
+        httpsPort = reactor.listenSSL(0, factory, contextFactory)  # type: ignore[attr-defined]
 
         def print_listening():
             httpHost = httpPort.getHost()
@@ -388,11 +391,11 @@ if __name__ == "__main__":
         clients = [MockDNSResolver()]
         factory = DNSServerFactory(clients=clients)
         protocol = dns.DNSDatagramProtocol(controller=factory)
-        listener = reactor.listenUDP(0, protocol)
+        listener = reactor.listenUDP(0, protocol)  # type: ignore[attr-defined]
 
         def print_listening():
             host = listener.getHost()
             print(f"{host.host}:{host.port}")
 
-    reactor.callWhenRunning(print_listening)
-    reactor.run()
+    reactor.callWhenRunning(print_listening)  # type: ignore[attr-defined]
+    reactor.run()  # type: ignore[attr-defined]
diff --git a/tests/test_engine.py b/tests/test_engine.py
index 7ddb420ba..5fb87424b 100644
--- a/tests/test_engine.py
+++ b/tests/test_engine.py
@@ -557,4 +557,4 @@ class EngineTest(unittest.TestCase):
 if __name__ == "__main__":
     if len(sys.argv) > 1 and sys.argv[1] == "runserver":
         start_test_site(debug=True)
-        reactor.run()
+        reactor.run()  # type: ignore[attr-defined]