diff --git a/trackers/PoseFlow/requirements.txt b/trackers/PoseFlow/requirements.txt
index 50cfd35e..2dc4b8d5 100644
--- a/trackers/PoseFlow/requirements.txt
+++ b/trackers/PoseFlow/requirements.txt
@@ -1,6 +1,6 @@
 numpy==1.14.5
 scipy==1.1.0
-opencv_python==3.4.2.16
+opencv_python==4.2.0.32
 opencv_contrib_python==3.4.2.16
 matplotlib==2.2.2
 tqdm==4.23.4