diff --git a/CHANGES/6663.bugfix b/CHANGES/6663.bugfix
new file mode 100644
index 00000000000..ee89799a0e9
--- /dev/null
+++ b/CHANGES/6663.bugfix
@@ -0,0 +1 @@
+Remove a deprecated usage of pytest.warns(None)
diff --git a/CONTRIBUTORS.txt b/CONTRIBUTORS.txt
index 0432d7b6d80..bd7677f5f29 100644
--- a/CONTRIBUTORS.txt
+++ b/CONTRIBUTORS.txt
@@ -52,6 +52,7 @@ Artem Yushkovskiy
 Arthur Darcet
 Austin Scola
 Ben Bader
+Ben Greiner
 Ben Timby
 Benedikt Reinartz
 Bob Haddleton
diff --git a/tests/test_client_functional.py b/tests/test_client_functional.py
index 1a62048c274..998b22f86bf 100644
--- a/tests/test_client_functional.py
+++ b/tests/test_client_functional.py
@@ -2444,32 +2444,19 @@ async def close(self):
 
 
 async def test_async_with_session() -> None:
-    with pytest.warns(None) as cm:
-        async with aiohttp.ClientSession() as session:
-            pass
-    assert len(cm.list) == 0
+    async with aiohttp.ClientSession() as session:
+        pass
 
     assert session.closed
 
 
 async def test_session_close_awaitable() -> None:
     session = aiohttp.ClientSession()
-    with pytest.warns(None) as cm:
-        await session.close()
-    assert len(cm.list) == 0
+    await session.close()
 
     assert session.closed
 
 
-async def test_close_run_until_complete_not_deprecated() -> None:
-    session = aiohttp.ClientSession()
-
-    with pytest.warns(None) as cm:
-        await session.close()
-
-    assert len(cm.list) == 0
-
-
 async def test_close_resp_on_error_async_with_session(aiohttp_server: Any) -> None:
     async def handler(request):
         resp = web.StreamResponse(headers={"content-length": "100"})