diff --git a/requirements.txt b/requirements.txt
index 0135d98..10e8889 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ numpy==1.16.0
 opencv-python==4.0.0.21
 pandas==0.23.4
 Pillow==5.4.1
-protobuf==3.6.1
+protobuf==3.18.3
 pyparsing==2.3.1
 python-dateutil==2.7.5
 pytz==2018.9