diff --git a/requirements.txt b/requirements.txt
index 92d0bde..85a71f7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ mock==2.0.0
 numpy==1.16.1
 pbr==5.1.2
 pkg-resources==0.0.0
-protobuf==3.6.1
+protobuf==3.18.3
 python-dateutil==2.8.0
 python-slugify==2.0.1
 requests==2.21.0