diff --git a/OneStage/yolo/deep_sort_yolov3/requirements.txt b/OneStage/yolo/deep_sort_yolov3/requirements.txt
index 130579b..51a67a2 100644
--- a/OneStage/yolo/deep_sort_yolov3/requirements.txt
+++ b/OneStage/yolo/deep_sort_yolov3/requirements.txt
@@ -1,7 +1,7 @@
 Keras==2.3.1
 tensorflow-gpu==1.15.2
 numpy==1.15.0
-opencv-python==3.4.4.19
+opencv-python==3.4.7.28
 scikit-learn==0.21.2
 scipy==1.1.0
 Pillow