diff --git a/requirements.txt b/requirements.txt
index 23a0ae0bf..b19a38978 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 numpy>=1.13
 pyyaml==3.12
 matplotlib
-opencv-python>=3.2
+opencv-python==4.2.0.32
 setuptools
 Cython
 mock