diff --git a/deployments/4-class/requirements.txt b/deployments/4-class/requirements.txt
index ee2fa58..64e384d 100644
--- a/deployments/4-class/requirements.txt
+++ b/deployments/4-class/requirements.txt
@@ -9,6 +9,6 @@ prettytable
 pathos
 psutil
 torch==1.7.0
-opencv-python==4.2.0.32
+opencv-python==4.8.1.78
 torchio==0.17.0
 medpy==0.4.0