diff --git a/requirements.txt b/requirements.txt
index b825105..f8700ba 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 tianshou==0.4.0
 
 opencv-python==4.6.0.66
-opencv-contrib-python==4.6.0.66
+opencv-contrib-python==4.8.1.78
 box2d==2.3.10
 box2d-kengz==2.3.3