diff --git a/requirements.txt b/requirements.txt
index 151a15c..0389247 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,6 +5,6 @@ git+https://github.com/tensorflow/cleverhans.git@de5db266fdf47830f46c80cca53fd84
 gym==0.15.4
 tqdm
 box2d-py
-opencv-python==3.4.2.17
+opencv-python==4.2.0.32
 atari_py==0.1.7
 procgen==0.9.2
\ No newline at end of file