diff --git a/nextjs-base/Containerfile b/nextjs-base/Containerfile
index 1cc2994..0c1ba9e 100644
--- a/nextjs-base/Containerfile
+++ b/nextjs-base/Containerfile
@@ -1,6 +1,9 @@
 # Originally from: https://github.com/devcontainers/images/blob/main/src/javascript-node/.devcontainer/Dockerfile
-# [Choice] Node.js version (use -bullseye variants on local arm64/Apple Silicon): 18, 16, 14, 18-bullseye, 16-bullseye, 14-bullseye, 18-buster, 16-buster, 14-buster
-ARG VARIANT=20-bullseye-slim
+#
+# Kept on the same node release as node-service-base.  The floor is set by this
+# image's own tooling rather than by the apps it builds: build-app.sh installs
+# js-beautify, whose dependencies now require node 22.
+ARG VARIANT=22-bookworm-slim
 FROM node:${VARIANT}
 
 ARG USERNAME=node
diff --git a/webapp-base/Containerfile b/webapp-base/Containerfile
index 856cc77..be3155b 100644
--- a/webapp-base/Containerfile
+++ b/webapp-base/Containerfile
@@ -1,6 +1,7 @@
 # Originally from: https://github.com/devcontainers/images/blob/main/src/javascript-node/.devcontainer/Dockerfile
-# [Choice] Node.js version (use -bullseye variants on local arm64/Apple Silicon): 18, 16, 14, 18-bullseye, 16-bullseye, 14-bullseye, 18-buster, 16-buster, 14-buster
-ARG VARIANT=20-bullseye-slim
+#
+# Kept on the same node release as the other base images here.
+ARG VARIANT=22-bookworm-slim
 FROM node:${VARIANT}
 
 ARG USERNAME=node