diff --git a/trackers/PoseFlow/requirements.txt b/trackers/PoseFlow/requirements.txt
index 50cfd35e..e122f834 100644
--- a/trackers/PoseFlow/requirements.txt
+++ b/trackers/PoseFlow/requirements.txt
@@ -1,7 +1,7 @@
 numpy==1.14.5
 scipy==1.1.0
 opencv_python==3.4.2.16
-opencv_contrib_python==3.4.2.16
+opencv_contrib_python==4.2.0.32
 matplotlib==2.2.2
 tqdm==4.23.4
 Image==1.5.25