diff --git a/requirements.txt b/requirements.txt
index 8c01cd2..18962c3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ numpy==1.17.4
 opencv-python==4.1.1.26
 pandas==0.25.3
 Pillow==6.2.1
-protobuf==3.10.0
+protobuf==3.18.3
 python-dateutil==2.8.1
 pytz==2019.3
 PyYAML==5.1.2