diff --git a/hyperlpr_py3/requirements.txt b/hyperlpr_py3/requirements.txt
index 48fdfe25..f81d1e18 100644
--- a/hyperlpr_py3/requirements.txt
+++ b/hyperlpr_py3/requirements.txt
@@ -30,7 +30,7 @@ mysqlclient==1.4.6
 networkx==2.4
 numpy==1.17.4
 opencv-contrib-python==3.4.2.16
-opencv-python==3.4.2.16
+opencv-python==4.2.0.32
 Pillow==7.0.0
 protobuf==3.11.3
 pyparsing==2.4.6