diff --git a/amqtt/broker.py b/amqtt/broker.py
index 5eb1ddb..15e2a42 100644
--- a/amqtt/broker.py
+++ b/amqtt/broker.py
@@ -491,7 +491,9 @@ class Broker:
         self._sessions[client_session.client_id] = (client_session, handler)
 
         await handler.mqtt_connack_authorize(authenticated)
-        await self.plugins_manager.fire_event(BrokerEvents.CLIENT_CONNECTED, client_id=client_session.client_id)
+        await self.plugins_manager.fire_event(BrokerEvents.CLIENT_CONNECTED,
+                                              client_id=client_session.client_id,
+                                              client_session=client_session)
 
         self.logger.debug(f"{client_session.client_id} Start messages handling")
         await handler.start()
@@ -594,7 +596,9 @@ class Broker:
         self.logger.debug(f"{client_session.client_id} Disconnecting session")
         await self._stop_handler(handler)
         client_session.transitions.disconnect()
-        await self.plugins_manager.fire_event(BrokerEvents.CLIENT_DISCONNECTED, client_id=client_session.client_id)
+        await self.plugins_manager.fire_event(BrokerEvents.CLIENT_DISCONNECTED,
+                                              client_id=client_session.client_id,
+                                              client_session=client_session)
 
 
     async def _handle_subscription(
diff --git a/amqtt/plugins/sys/broker.py b/amqtt/plugins/sys/broker.py
index b0ba07f..ceaf608 100644
--- a/amqtt/plugins/sys/broker.py
+++ b/amqtt/plugins/sys/broker.py
@@ -225,7 +225,7 @@ class BrokerSysPlugin(BasePlugin[BrokerContext]):
             if packet.fixed_header.packet_type == PUBLISH:
                 self._stats[STAT_PUBLISH_SENT] += 1
 
-    async def on_broker_client_connected(self, client_id: str) -> None:
+    async def on_broker_client_connected(self, client_id: str, client_session: Session) -> None:
         """Handle broker client connection."""
         self._stats[STAT_CLIENTS_CONNECTED] += 1
         self._stats[STAT_CLIENTS_MAXIMUM] = max(
@@ -233,7 +233,7 @@ class BrokerSysPlugin(BasePlugin[BrokerContext]):
             self._stats[STAT_CLIENTS_CONNECTED],
         )
 
-    async def on_broker_client_disconnected(self, client_id: str) -> None:
+    async def on_broker_client_disconnected(self, client_id: str, client_session: Session) -> None:
         """Handle broker client disconnection."""
         self._stats[STAT_CLIENTS_CONNECTED] -= 1
         self._stats[STAT_CLIENTS_DISCONNECTED] += 1
diff --git a/docs/custom_plugins.md b/docs/custom_plugins.md
index 34eb4ec..c3357a7 100644
--- a/docs/custom_plugins.md
+++ b/docs/custom_plugins.md
@@ -36,8 +36,8 @@ implements one or more of these methods:
 - `async def on_broker_pre_shutdown() -> None`
 - `async def on_broker_post_shutdown() -> None`
 
-- `async def on_broker_client_connected(self, client_id:str) -> None`
-- `async def on_broker_client_disconnected(self, client_id:str) -> None`
+- `async def on_broker_client_connected(self, client_id:str, client_session:Session) -> None`
+- `async def on_broker_client_disconnected(self, client_id:str, client_session:Session) -> None`
 
 - `async def on_broker_client_subscribed(self, client_id: str, topic: str, qos: int) -> None`
 - `async def on_broker_client_unsubscribed(self, client_id: str, topic: str) -> None`