diff --git a/docker-compose.yml b/docker-compose.yml
index fd6ddb1..acfbc70 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -30,6 +30,7 @@ services:
       - 'transport.host=127.0.0.1'
       # See https://www.elastic.co/guide/en/elasticsearch/reference/7.14/docker.html
       - 'discovery.type=single-node'
+      - 'ES_JAVA_OPTS=-Xms1g -Xmx1g'
     ports :
       - '127.0.0.1:9200:9200'
     volumes: