diff --git a/Dockerfile b/Dockerfile
index 855bc93..2f9b834 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-FROM node:20-alpine
+FROM node:21-alpine
 
 # Use production node environment by default.
 ENV NODE_ENV production