diff --git a/requirements.txt b/requirements.txt
index 5cd75c1..7f5c573 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ jmespath==0.10.0
 joblib==0.15.1
 Markdown==3.2.2
 numpy==1.14.5
-protobuf==3.12.2
+protobuf==3.18.3
 python-dateutil==2.8.1
 requests==2.23.0
 s3transfer==0.3.3