diff --git a/requirements.txt b/requirements.txt
index 9b379bf7..bf29a527 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 matplotlib>=3.1.3
 torch>=1.1.0
-opencv-python==4.2.0.32
+opencv-python==4.1.2.30
 numpy>=1.18.1