diff --git a/tests/gateway/test_google_chat.py b/tests/gateway/test_google_chat.py
index 3f093bcea1d..9d36945a357 100644
--- a/tests/gateway/test_google_chat.py
+++ b/tests/gateway/test_google_chat.py
@@ -2740,7 +2740,7 @@ class _FakeAiohttpSession:
 
 def _install_fake_aiohttp(monkeypatch, session):
     fake_aiohttp = types.SimpleNamespace(
-        ClientSession=lambda timeout=None: session,
+        ClientSession=lambda timeout=None, **kwargs: session,
         ClientTimeout=lambda total=None: None,
     )
     monkeypatch.setitem(sys.modules, "aiohttp", fake_aiohttp)
diff --git a/tests/gateway/test_teams.py b/tests/gateway/test_teams.py
index 58b8c35a5c2..6c7173fe931 100644
--- a/tests/gateway/test_teams.py
+++ b/tests/gateway/test_teams.py
@@ -763,7 +763,7 @@ def _install_fake_aiohttp(monkeypatch, session):
     """Replace ``aiohttp`` in ``sys.modules`` so ``import aiohttp as _aiohttp``
     inside ``_standalone_send`` picks up our fake."""
     fake_aiohttp = types.SimpleNamespace(
-        ClientSession=lambda timeout=None: session,
+        ClientSession=lambda timeout=None, **kwargs: session,
         ClientTimeout=lambda total=None: None,
     )
     monkeypatch.setitem(sys.modules, "aiohttp", fake_aiohttp)