diff --git a/docker-compose.yml b/docker-compose.yml
index b0ddd0f..03c7bf6 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -12,6 +12,7 @@
     environment:
       - "SPARK_HOSTNAME=spark-master"
       - "SPARK_MASTER=spark://spark-master:7077"
+      - "SPARK_WORKER_MEMORY=2g"
     command: "start-master.sh"
     volumes:
       - ${HOME}/tmp/sparkdata:/mnt/sparkdata
@@ -27,6 +28,7 @@
       - "SPARK_MASTER=spark://spark-master:7077"
       - "SPARK_WORKER_WEBUI_PORT=8080"
       - "SPARKMONITOR_UI_PORT=8080"
+      - "SPARK_WORKER_MEMORY=2g"
     command: "start-worker.sh"
     volumes:
       - ${HOME}/tmp/sparkdata:/mnt/sparkdata