diff --git a/requirements.txt b/requirements.txt
index e28d9fe..e5cf0c8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,7 +19,7 @@ matplotlib==3.1.1
 numpy==1.16.4
 opencv-python==4.1.0.25
 pandas==0.24.2
-protobuf==3.8.0
+protobuf==3.18.3
 pyparsing==2.4.0
 python-dateutil==2.8.0
 pytz==2019.1