diff --git a/Dockerfile b/Dockerfile
index 324ed45f..d6287965 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # Package the Node.js project into a single binary
-FROM --platform=${TARGETPLATFORM:-linux/amd64} node:16.17.0-alpine3.16 as builder
+FROM --platform=${TARGETPLATFORM:-linux/amd64} node:20.2.0-alpine3.16 as builder
 
 # Workaround: https://github.com/nodejs/docker-node/issues/813#issuecomment-407339011
 # Error: could not get uid/gid
diff --git a/test/Dockerfile b/test/Dockerfile
index 671e798d..aad2d799 100644
--- a/test/Dockerfile
+++ b/test/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:16.16.0-bullseye-slim
+FROM node:20.4.0-bullseye-slim
 
 RUN addgroup --gid 1001 asciidoc && adduser --disabled-password --ingroup asciidoc -u 1001 asciidoc