diff --git a/heatmap-tool/frontend/Dockerfile b/heatmap-tool/frontend/Dockerfile
index d2594527..cc93ba46 100644
--- a/heatmap-tool/frontend/Dockerfile
+++ b/heatmap-tool/frontend/Dockerfile
@@ -1,5 +1,5 @@
 # Use an official Node.js runtime as a parent image
-FROM node:18-alpine
+FROM node:20-alpine
 
 # Set the working directory in the container
 WORKDIR /app