Automatic snapshot delete on Elasticsearch 2.4

Hello together,

i´am new to elasticsearch and i have some question about version 2.4.
We take snapshots every day but now there are so many that we have to delete them. I don´t want to delete them one by one. So does anyone know a workflow to delete snapshots who are older than 90 days? Here is our date convention : "date +%Y%m%d-%H%M%S".

Thanks for your help.

As far as I know the only way is to delete them one by one.

Thanks for your help.
I hope someone else knows another possibility.