diff --git a/requirements.txt b/requirements.txt
index a0aa49d..5c6fdc8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,7 +22,7 @@ networkx==2.4
 numpy==1.19.0
 pandas==1.0.5
 pkg-resources==0.0.0
-protobuf==3.12.2
+protobuf==3.18.3
 pyparsing==2.4.7
 python-dateutil==2.8.1
 pytz==2020.1