diff --git a/orangepi-server/__pycache__/visualizer.cpython-313.pyc b/orangepi-server/__pycache__/visualizer.cpython-313.pyc
index b54a434..3363a43 100644
Binary files a/orangepi-server/__pycache__/visualizer.cpython-313.pyc and b/orangepi-server/__pycache__/visualizer.cpython-313.pyc differ
diff --git a/orangepi-server/visualizer.py b/orangepi-server/visualizer.py
index 0de33a1..62811fb 100644
--- a/orangepi-server/visualizer.py
+++ b/orangepi-server/visualizer.py
@@ -331,7 +331,7 @@ class TargetStore:
             "server_time": round(now, 2),
         }
 
-    def update_from_frame(self, frame: dict):
+    async def update_from_frame(self, frame: dict):
         self.node_id = frame.get("node_id", self.node_id)
         self.sequence = frame.get("sequence", 0)
         self.timestamp_ms = frame.get("timestamp", 0)
@@ -479,7 +479,7 @@ async def esp32_ws_forever(esp32_host: str):
                         log.warning(f"Lỗi parse JSON từ ESP32: {message[:80]}...")
                         continue
 
-                    STATE.update_from_frame(frame)
+                    await STATE.update_from_frame(frame)
                     _update_zone_occupancy_from_targets(STATE)
                     # Always push the latest state
                     await broadcast_to_browsers()