diff --git a/docker-compose.yml b/docker-compose.yml
index 5ee31964d..2480311a2 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -7,7 +7,7 @@ services:
     working_dir: /mermaid
     mem_limit: '2G'
     environment:
-      - NODE_OPTIONS=--max_old_space_size=4096
+      - NODE_OPTIONS=--max_old_space_size=2048
     volumes:
       - ./:/mermaid
       - root_cache:/root/.cache