diff --git a/python/requirements.txt b/python/requirements.txt
index 697b24fd4db6aff6b30913d8a5d23416dc208c80..d3c7b1893fabdd448fa838d978bfd3269ccc1bae 100644
--- a/python/requirements.txt
+++ b/python/requirements.txt
@@ -1,5 +1,6 @@
 numpy>=1.12, <=1.16.4 ; python_version<"3.5"
 google>=2.0.3
+opencv-python==4.2.0.32
 protobuf>=3.12.2
 grpcio-tools>=1.28.1
 grpcio>=1.28.1