diff --git a/async_upnp_client/aiohttp.py b/async_upnp_client/aiohttp.py
index 16b30b4..21204cf 100644
--- a/async_upnp_client/aiohttp.py
+++ b/async_upnp_client/aiohttp.py
@@ -14,6 +14,7 @@
     ClientError,
     ClientResponseError,
     ClientSession,
+    ClientTimeout,
 )
 
 from async_upnp_client.client import UpnpRequester
@@ -64,7 +65,7 @@ def __init__(
         self, timeout: int = 5, http_headers: Optional[Mapping[str, str]] = None
     ) -> None:
         """Initialize."""
-        self._timeout = timeout
+        self._timeout = ClientTimeout(total=float(timeout))
         self._http_headers = http_headers or {}
 
     async def async_http_request(
@@ -158,7 +159,7 @@ def __init__(
         """Initialize."""
         self._session = session
         self._with_sleep = with_sleep
-        self._timeout = timeout
+        self._timeout = ClientTimeout(total=float(timeout))
         self._http_headers = http_headers or {}
 
     async def async_http_request(
diff --git a/changes/241.bugfix b/changes/241.bugfix
new file mode 100644
index 0000000..1022fc2
--- /dev/null
+++ b/changes/241.bugfix
@@ -0,0 +1 @@
+Argument `timeout` of method `aiohttp.ClientSession.request()` has to be of type `ClientTimeout`.