Updating default ttl value in elasticsearch?

Elastic Stack Elasticsearch
1

I know that when creating the mapping we can give something like,

        "_ttl" : {
          "enabled" : true,
          "default" : 900000
        }

to enable _ttl with a default value. I would like to know whether can be update this default _ttl value by updating the mapping ?

Thanks. Any help is highly appreciated.