diff --git a/Dockerfile b/Dockerfile
index 0b684dd..c6018f5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 #
 # STAGE 1: build static web files
 #
-FROM node:18-bullseye-slim as frontend
+FROM node:20-bookworm-slim as frontend
 WORKDIR /src
 
 #
diff --git a/dev/api-gen b/dev/api-gen
index b60464e..f193647 100755
--- a/dev/api-gen
+++ b/dev/api-gen
@@ -22,4 +22,4 @@ docker run --rm -it \
     -v "${PWD}/../client:/app" \
     --entrypoint="npm" \
     --workdir="/app" \
-    node:18-bullseye-slim run lint -- --fix src/api
+    node:20-bookworm-slim run lint -- --fix src/api
diff --git a/dev/serve b/dev/serve
index 32b95d6..c79e63a 100755
--- a/dev/serve
+++ b/dev/serve
@@ -28,4 +28,4 @@ docker run --rm -it \
     --volume "${PWD}/../client:/app" \
     --entrypoint="npm" \
     --workdir="/app" \
-    node:18-bullseye-slim run serve;
+    node:20-bookworm-slim run serve;
diff --git a/dev/traefik/serve b/dev/traefik/serve
index a347123..cea55ac 100755
--- a/dev/traefik/serve
+++ b/dev/traefik/serve
@@ -22,4 +22,4 @@ docker run --rm -it \
     --user="$(id -u):$(id -g)" \
     --workdir="/app" \
     --entrypoint="npm" \
-    node:18-bullseye-slim run serve;
+    node:20-bookworm-slim run serve;