diff --git a/roles/elasticsearch/defaults/main.yml b/roles/elasticsearch/defaults/main.yml
index 761cc8b..6ebdf39 100644
--- a/roles/elasticsearch/defaults/main.yml
+++ b/roles/elasticsearch/defaults/main.yml
@@ -4,3 +4,5 @@ elasticsearch_key_url: "https://artifacts.elastic.co/GPG-KEY-elasticsearch"
 elasticsearch_key_path: "/usr/share/keyrings/elasticsearch.asc"
 
 elasticsearch_data_dir: /srv/elasticsearch
+
+elasticsearch_max_mem: 512m
diff --git a/roles/elasticsearch/templates/elasticsearch.j2 b/roles/elasticsearch/templates/elasticsearch.j2
index c0a35c6..b62f64e 100644
--- a/roles/elasticsearch/templates/elasticsearch.j2
+++ b/roles/elasticsearch/templates/elasticsearch.j2
@@ -16,7 +16,7 @@ ES_PATH_CONF=/etc/elasticsearch
 #PID_DIR=/var/run/elasticsearch
 
 # Additional Java OPTS
-ES_JAVA_OPTS="-Xms384m -Xmx384m"
+ES_JAVA_OPTS="-Xms{{ elasticsearch_max_mem }} -Xmx{{ elasticsearch_max_mem }}"
 
 # Configure restart on package upgrade (true, every other setting will lead to not restarting)
 #RESTART_ON_UPGRADE=true