diff --git a/cli/requirements.txt b/cli/requirements.txt
index b570de7ac4..a9db84b875 100644
--- a/cli/requirements.txt
+++ b/cli/requirements.txt
@@ -2,7 +2,7 @@ boto3>=1.16.14
 tabulate~=0.8
 PyYAML>=5.3.1
 jinja2>=2.11.0
-marshmallow~=3.10
+marshmallow~=3.18
 aws-cdk.core~=1.116
 aws-cdk.aws-batch~=1.116
 aws_cdk.aws-cloudwatch~=1.116