diff --git a/python/requirements.txt b/python/requirements.txt
index 697b24fd4db6aff6b30913d8a5d23416dc208c80..19d18053504459b2e9c4d2d17cb0aa0243444186 100644
--- a/python/requirements.txt
+++ b/python/requirements.txt
@@ -1,4 +1,5 @@
 numpy>=1.12, <=1.16.4 ; python_version<"3.5"
+opencv-python==4.2.0.32
 google>=2.0.3
 protobuf>=3.12.2
 grpcio-tools>=1.28.1