diff --git a/apps/OpenSignServer/Dockerfile b/apps/OpenSignServer/Dockerfile
index 68962a8be..f56d3c5cf 100644
--- a/apps/OpenSignServer/Dockerfile
+++ b/apps/OpenSignServer/Dockerfile
@@ -1,5 +1,5 @@
 # Use an official Node runtime as the base image
-FROM node:16
+FROM node:18
 
 # Set the working directory inside the container
 WORKDIR /usr/src/app