diff --git a/elements/puppet-stack-config/puppet-stack-config.yaml.template b/elements/puppet-stack-config/puppet-stack-config.yaml.template
index 0b5600406..c8d79ef8c 100644
--- a/elements/puppet-stack-config/puppet-stack-config.yaml.template
+++ b/elements/puppet-stack-config/puppet-stack-config.yaml.template
@@ -186,7 +186,7 @@ heat::cron::purge_deleted::destination: '/dev/null'
 heat::notification_driver: 'messaging'
 heat::yaql_memory_quota: 100000
 heat::yaql_limit_iterators: 1000
-heat::max_json_body_size: 2097152
+heat::max_json_body_size: 4194304
 
 # Keystone
 keystone::debug:  "%{hiera('debug')}"