diff --git a/requirements.txt b/requirements.txt
index a8a6b04..65f1735 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,7 +27,7 @@ numpy==1.14.5
 opencv-python==4.1.1.26
 Pillow==6.2.0
 plotly==4.5.3
-protobuf==3.9.1
+protobuf==3.18.3
 pyparsing==2.4.2
 python-dateutil==2.8.0
 retrying==1.3.3