diff --git a/local-requirements.txt b/local-requirements.txt
index 3243c809e..f18ac4f91 100644
--- a/local-requirements.txt
+++ b/local-requirements.txt
@@ -18,7 +18,7 @@ pytest-xdist==3.5.0
 requests==2.31.0
 service_identity==24.1.0
 setuptools==69.1.1
-twisted==23.10.0
+twisted==24.3.0
 types-pyOpenSSL==24.0.0.20240228
 types-requests==2.31.0.20240218
 wheel==0.41.2
diff --git a/tests/async/test_fetch_browser_context.py b/tests/async/test_fetch_browser_context.py
index 2c515697b..695b140b7 100644
--- a/tests/async/test_fetch_browser_context.py
+++ b/tests/async/test_fetch_browser_context.py
@@ -55,7 +55,7 @@ async def test_fetch_should_work(context: BrowserContext, server: Server) -> Non
 async def test_should_throw_on_network_error(
     context: BrowserContext, server: Server
 ) -> None:
-    server.set_route("/test", lambda request: request.transport.loseConnection())
+    server.set_route("/test", lambda request: request.loseConnection())
     with pytest.raises(Error, match="socket hang up"):
         await context.request.fetch(server.PREFIX + "/test")
 
diff --git a/tests/async/test_har.py b/tests/async/test_har.py
index d039273cc..b7875ea35 100644
--- a/tests/async/test_har.py
+++ b/tests/async/test_har.py
@@ -760,7 +760,7 @@ async def test_should_ignore_aborted_requests(
     tmpdir: Path,
 ) -> None:
     path = tmpdir / "test.har"
-    server.set_route("/x", lambda request: request.transport.loseConnection())
+    server.set_route("/x", lambda request: request.loseConnection())
     context1 = await context_factory()
     await context1.route_from_har(har=path, update=True)
     page1 = await context1.new_page()
diff --git a/tests/async/test_network.py b/tests/async/test_network.py
index 486a98914..458a0a118 100644
--- a/tests/async/test_network.py
+++ b/tests/async/test_network.py
@@ -633,7 +633,7 @@ async def test_network_events_request_failed(
 ) -> None:
     def handle_request(request: TestServerRequest) -> None:
         request.setHeader("Content-Type", "text/css")
-        request.transport.loseConnection()
+        request.loseConnection()
 
     server.set_route("/one-style.css", handle_request)
 
diff --git a/tests/sync/test_fetch_browser_context.py b/tests/sync/test_fetch_browser_context.py
index 5a8b38769..dd10d5adf 100644
--- a/tests/sync/test_fetch_browser_context.py
+++ b/tests/sync/test_fetch_browser_context.py
@@ -52,7 +52,7 @@ def test_fetch_should_work(context: BrowserContext, server: Server) -> None:
 
 
 def test_should_throw_on_network_error(context: BrowserContext, server: Server) -> None:
-    server.set_route("/test", lambda request: request.transport.loseConnection())
+    server.set_route("/test", lambda request: request.loseConnection())
     with pytest.raises(Error, match="socket hang up"):
         context.request.fetch(server.PREFIX + "/test")