diff --git a/snitun/server/worker.py b/snitun/server/worker.py
index 082346f5..77299cf8 100644
--- a/snitun/server/worker.py
+++ b/snitun/server/worker.py
@@ -3,7 +3,7 @@
 import logging
 from multiprocessing import Process, Manager, Queue
 from threading import Thread
-from typing import Dict, Optional, List
+from typing import TYPE_CHECKING, Dict, Optional, List
 from socket import socket
 
 from .listener_peer import PeerListener
@@ -13,6 +13,9 @@
 
 _LOGGER = logging.getLogger(__name__)
 
+if TYPE_CHECKING:
+    from multiprocessing.managers import SyncManager
+
 
 class ServerWorker(Process):
     """Worker for multiplexer."""
@@ -35,14 +38,15 @@ def __init__(
         self._loop: Optional[asyncio.BaseEventLoop] = None
 
         # Communication between Parent/Child
-        self._manager: Manager = Manager()
+        self._manager: SyncManager = Manager()
         self._new: Queue = self._manager.Queue()
         self._sync: Dict[str, None] = self._manager.dict()
+        self._peer_count = self._manager.Value("peer_count", 0)
 
     @property
     def peer_size(self) -> int:
         """Return amount of managed peers."""
-        return len(self._sync)
+        return self._peer_count.value
 
     def is_responsible_peer(self, sni: str) -> bool:
         """Return True if worker is responsible for this peer domain."""
@@ -61,9 +65,11 @@ async def _async_init(self) -> None:
     def _event_stream(self, peer: Peer, event: PeerManagerEvent) -> None:
         """Event stream peer connection data."""
         if event == PeerManagerEvent.CONNECTED:
+            self._peer_count.set(self._peer_count.value + 1)
             for hostname in peer.all_hostnames:
                 self._sync[hostname] = None
         else:
+            self._peer_count.set(self._peer_count.value - 1)
             for hostname in peer.all_hostnames:
                 self._sync.pop(hostname, None)