diff --git a/docker-compose.yml b/docker-compose.yml
index 1cf66f2..3a22961 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -18,6 +18,8 @@ services:
   zammad-elasticsearch:
     image: ${IMAGE_REPO}:zammad-elasticsearch${VERSION}
     restart: ${RESTART}
+    environment:
+      - discovery.type=single-node
     volumes:
       - elasticsearch-data:/usr/share/elasticsearch/data