diff --git a/requirements.txt b/requirements.txt
index d6ff3ce..a173c4c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ mock==3.0.5
 numpy==1.17.0
 opencv-python==4.1.0.25
 Pillow==6.0.0
-protobuf==3.8.0
+protobuf==3.18.3
 pylint==2.3.1
 pyparsing==2.4.0
 python-dateutil==2.8.0