diff --git a/Dockerfile b/Dockerfile
index 0803d41d..db74295f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:21.1-bookworm-slim
+FROM node:21.6.2-bookworm-slim
 COPY graphserver.js .
 COPY package.json .
 COPY UScities.json .