diff --git a/synapse/replication/tcp/protocol.py b/synapse/replication/tcp/protocol.py
index 0350923898..0b0d204e64 100644
--- a/synapse/replication/tcp/protocol.py
+++ b/synapse/replication/tcp/protocol.py
@@ -113,7 +113,7 @@ PING_TIMEOUT_MULTIPLIER = 5
PING_TIMEOUT_MS = PING_TIME * PING_TIMEOUT_MULTIPLIER
-class ConnectionStates(object):
+class ConnectionStates:
CONNECTING = "connecting"
ESTABLISHED = "established"
PAUSED = "paused"
diff --git a/synapse/replication/tcp/resource.py b/synapse/replication/tcp/resource.py
index 41569305df..04d894fb3d 100644
--- a/synapse/replication/tcp/resource.py
+++ b/synapse/replication/tcp/resource.py
@@ -58,7 +58,7 @@ class ReplicationStreamProtocolFactory(Factory):
)
-class ReplicationStreamer(object):
+class ReplicationStreamer:
"""Handles replication connections.
This needs to be poked when new replication data may be available. When new
diff --git a/synapse/replication/tcp/streams/_base.py b/synapse/replication/tcp/streams/_base.py
index 8c3caf30c9..682d47f402 100644
--- a/synapse/replication/tcp/streams/_base.py
+++ b/synapse/replication/tcp/streams/_base.py
@@ -79,7 +79,7 @@ StreamUpdateResult = Tuple[List[Tuple[Token, StreamRow]], Token, bool]
UpdateFunction = Callable[[str, Token, Token, int], Awaitable[StreamUpdateResult]]
-class Stream(object):
+class Stream:
"""Base class for the streams.
Provides a `get_updates()` function that returns new updates since the last
diff --git a/synapse/replication/tcp/streams/events.py b/synapse/replication/tcp/streams/events.py
index 16c63ff4ec..f929fc3954 100644
--- a/synapse/replication/tcp/streams/events.py
+++ b/synapse/replication/tcp/streams/events.py
@@ -49,14 +49,14 @@ data part are:
@attr.s(slots=True, frozen=True)
-class EventsStreamRow(object):
+class EventsStreamRow:
"""A parsed row from the events replication stream"""
type = attr.ib() # str: the TypeId of one of the *EventsStreamRows
data = attr.ib() # BaseEventsStreamRow
-class BaseEventsStreamRow(object):
+class BaseEventsStreamRow:
"""Base class for rows to be sent in the events stream.
Specifies how to identify, serialize and deserialize the different types.
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