diff --git a/app.py b/app.py
index 9c31f83..dede655 100644
--- a/app.py
+++ b/app.py
@@ -60,7 +60,7 @@ def worker(id,source,region=None,stream=False):
             if not ret:
                 print("Error read video stream.")
                 break
-            result = model.track(frame,show=False,stream=False,persist=True)
+            result = model.track(frame,show=False,stream=False,persist=True,device=int(id)%4)
             result = result[0]
             detections = sv.Detections.from_yolov8(result)
             if result.boxes.id is not None: