diff --git a/src/judas_server/backend/backend_server.py b/src/judas_server/backend/backend_server.py
index d9d18ec..b1bea71 100644
--- a/src/judas_server/backend/backend_server.py
+++ b/src/judas_server/backend/backend_server.py
@@ -293,6 +293,15 @@ class BackendServer:
                         self._accept_connection(key.fileobj)  # type: ignore
                     else:
                         self._handle_connection(key, mask)
+
+                # update client statuses
+                now = time.time()
+                for client in self.clients.values():
+                    if (
+                        client.status == ClientStatus.OFFLINE
+                        and now - client.last_seen > 60 * 60 * 24  # 24 hours
+                    ):
+                        self.clients[client.id].status = ClientStatus.STALE
                 time.sleep(0.001)  # prevent 100% CPU usage
 
         except Exception as e: