diff --git a/demos/instance_occlsegm/requirements.txt b/demos/instance_occlsegm/requirements.txt
index 93ce82011..f93429d31 100644
--- a/demos/instance_occlsegm/requirements.txt
+++ b/demos/instance_occlsegm/requirements.txt
@@ -13,7 +13,7 @@ imgaug>=0.2.7
 labelme>=2.9,<5.0.0
 matplotlib
 numpy
-opencv-python==4.2.0.32
+opencv-python==4.8.1.78
 pathlib2
 Pillow
 protobuf==3.17.3