diff --git a/appliances/elasticsearch/elasticsearch.service b/appliances/elasticsearch/elasticsearch.service
index 43dba87..8c0dc9c 100644
--- a/appliances/elasticsearch/elasticsearch.service
+++ b/appliances/elasticsearch/elasticsearch.service
@@ -5,6 +5,7 @@ After = network.target
 [Service]
 User = elastic
 Group = elastic
+LimitNOFILE=65536
 Environment=ES_HOME=/var/lib/elasticsearch
 ExecStart = /var/lib/elasticsearch/bin/elasticsearch