diff --git a/docker/mainline/Dockerfile b/docker/mainline/Dockerfile
index 569fa7082..46a3a17b0 100644
--- a/docker/mainline/Dockerfile
+++ b/docker/mainline/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:20-alpine
+FROM node:21-alpine
 ENV NODE_ENV production
 WORKDIR /usr/src/app
 COPY . .