diff --git a/elements/puppet-stack-config/puppet-stack-config.yaml.template b/elements/puppet-stack-config/puppet-stack-config.yaml.template
index 57d2559c9..21af4aeeb 100644
--- a/elements/puppet-stack-config/puppet-stack-config.yaml.template
+++ b/elements/puppet-stack-config/puppet-stack-config.yaml.template
@@ -620,7 +620,7 @@ mistral::keystone::auth::password: {{UNDERCLOUD_MISTRAL_PASSWORD}}
 mistral::keystone::auth::tenant: 'service'
 mistral::engine::older_than: 2880
 mistral::engine::evaluation_interval: 120
-mistral::engine::execution_field_size_limit_kb: 4096
+mistral::engine::execution_field_size_limit_kb: 16384
 
 # Zaqar
 zaqar::keystone::authtoken::project_name: 'service'