diff --git a/requirements.txt b/requirements.txt
index 389e616..988e6d3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ mock==2.0.0
 numpy==1.16.2
 pandas==0.24.2
 pbr==5.1.3
-protobuf==3.7.1
+protobuf==3.18.3
 pyparsing==2.3.1
 python-dateutil==2.8.0
 pytz==2018.9