diff --git a/requirements.txt b/requirements.txt
index 9b8591d..4ba478a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ mock==2.0.0
 numpy==1.16.2
 pbr==5.1.3
 Pillow>=6.2.2
-protobuf==3.7.1
+protobuf==3.18.3
 pyparsing==2.4.0
 python-dateutil==2.8.0
 PyYAML==5.1