diff --git a/aws-sfn-lambda/sam-app/src/requirements.txt b/aws-sfn-lambda/sam-app/src/requirements.txt
index 9fc19f0..c00ef9f 100644
--- a/aws-sfn-lambda/sam-app/src/requirements.txt
+++ b/aws-sfn-lambda/sam-app/src/requirements.txt
@@ -1,4 +1,4 @@
 -i https://pypi.org/simple/
 mysql-connector-python==8.0.24
-protobuf==3.17.1
+protobuf==3.18.3
 six==1.16.0