diff --git a/Dockerfile b/Dockerfile
index 29213227..8996014e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,6 +12,7 @@ ARG asciidoctor_revealjs_version=4.1.0
 ARG kramdown_asciidoc_version=2.0.0
 ARG asciidoctor_bibtex_version=0.8.0
 ARG asciidoctor_kroki_version=0.5.0
+ARG nodejs_version=16.14.0-r0
 ARG asciidoctor_web_pdf_version=1.0.0-alpha.14
 ARG asciidoctor_kroki_npm_version=0.15.4
 
@@ -26,6 +27,7 @@ ENV ASCIIDOCTOR_VERSION=${asciidoctor_version} \
   KRAMDOWN_ASCIIDOC_VERSION=${kramdown_asciidoc_version} \
   ASCIIDOCTOR_BIBTEX_VERSION=${asciidoctor_bibtex_version} \
   ASCIIDOCTOR_KROKI_VERSION=${asciidoctor_kroki_version} \
+  NODEJS_VERSION=${nodejs_version} \
   ASCIIDOCTOR_WEB_PDF_VERSION=${asciidoctor_web_pdf_version} \
   ASCIIDOCTOR_KROKI_NPM_VERSION=${asciidoctor_kroki_npm_version}
 
diff --git a/README.adoc b/README.adoc
index ff6aa77e..f52dfab8 100644
--- a/README.adoc
+++ b/README.adoc
@@ -10,6 +10,7 @@
 :KRAMDOWN_ASCIIDOC_VERSION: 2.0.0
 :ASCIIDOCTOR_BIBTEX_VERSION: 0.8.0
 :ASCIIDOCTOR_KROKI_VERSION: 0.5.0
+:NODEJS_VERSION: 16.14.0
 :ASCIIDOCTOR_WEB_PDF_VERSION: 1.0.0-alpha.14
 ifdef::env-github[]
 :tip-caption: :bulb:
@@ -42,7 +43,7 @@ This Docker image provides:
 * https://github.com/asciidoctor/asciidoctor-confluence[Asciidoctor Confluence] {ASCIIDOCTOR_CONFLUENCE_VERSION}
 * https://github.com/asciidoctor/asciidoctor-bibtex[Asciidoctor Bibtex] {ASCIIDOCTOR_BIBTEX_VERSION}
 * https://github.com/Mogztter/asciidoctor-kroki[Asciidoctor Kroki] {ASCIIDOCTOR_KROKI_VERSION}
-* https://github.com/Mogztter/asciidoctor-web-pdf[Asciidoctor Web PDF] {ASCIIDOCTOR_WEB_PDF_VERSION}
+* https://github.com/Mogztter/asciidoctor-web-pdf[Asciidoctor Web PDF] {ASCIIDOCTOR_WEB_PDF_VERSION} -- This is an unofficial project.
 
 
 This image uses Alpine Linux {ALPINE_VERSION} as base image.
diff --git a/README.md b/README.md
index 61c57ab8..69f2d82f 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@ This Docker image provides:
 
 -   [Asciidoctor Kroki](https://github.com/Mogztter/asciidoctor-kroki) 0.5.0
 
--   [Asciidoctor Web PDF](https://github.com/Mogztter/asciidoctor-web-pdf) 1.0.0-alpha.14
+-   [Asciidoctor Web PDF](https://github.com/Mogztter/asciidoctor-web-pdf) 1.0.0-alpha.14  -- This is an unofficial project.
 
 This image uses Alpine Linux 3.13.5 as base image.
 
diff --git a/tests/asciidoctor.bats b/tests/asciidoctor.bats
index 75d0f38f..61e58dfc 100644
--- a/tests/asciidoctor.bats
+++ b/tests/asciidoctor.bats
@@ -13,6 +13,7 @@ ASCIIDOCTOR_REVEALJS_VERSION=4.1.0
 KRAMDOWN_ASCIIDOC_VERSION=2.0.0
 ASCIIDOCTOR_BIBTEX_VERSION=0.8.0
 ASCIIDOCTOR_KROKI_VERSION=0.5.0
+NODEJS_VERSION=16.14.0
 ASCIIDOCTOR_WEB_PDF_VERSION=1.0.0-alpha.14
 DOCKER_IMAGE_NAME_TO_TEST="${IMAGE_NAME:-asciidoctor}"
 
@@ -55,6 +56,11 @@ teardown() {
     | grep "${ASCIIDOCTOR_WEB_PDF_VERSION}"
 }
 
+@test "Node.js is installed and in version ${NODEJS_VERSION}" {
+  docker run -t --rm "${DOCKER_IMAGE_NAME_TO_TEST}" node -v \
+    | grep "${NODEJS_VERSION}"
+}
+
 @test "asciidoctor-revealjs is callable without error" {
   docker run -t --rm "${DOCKER_IMAGE_NAME_TO_TEST}" asciidoctor-revealjs -v \
     | grep "${ASCIIDOCTOR_REVEALJS_VERSION}"
diff --git a/updatecli/updatecli.d/nodejs.yml b/updatecli/updatecli.d/nodejs.yml
new file mode 100644
index 00000000..23d1007a
--- /dev/null
+++ b/updatecli/updatecli.d/nodejs.yml
@@ -0,0 +1,91 @@
+---
+title: "Bump Node.js version"
+
+scms:
+  default:
+    kind: github
+    spec:
+      user: "{{ .github.user }}"
+      email: "{{ .github.email }}"
+      owner: "{{ requiredEnv .github.owner }}"
+      repository: "{{ requiredEnv .github.repository }}"
+      token: "{{ requiredEnv .github.token }}"
+      username: "{{ .github.username }}"
+      branch: "{{ .github.branch }}"
+
+sources:
+  latestVersion:
+    kind: githubRelease
+    name: "Get the latest Node.js version"
+    spec:
+      owner: "nodejs"
+      repository: "node"
+      token: "{{ requiredEnv .github.token }}"
+      username: "{{ .github.username }}"
+      versionFilter:
+        kind: regex
+        pattern: '*LTS*'
+    transformers:
+      - trimPrefix: "v"
+
+conditions:
+  testDockerfileArgVersion:
+    name: "Does the Dockerfile have an ARG instruction which key is nodejs_version?"
+    kind: dockerfile
+    spec:
+      file: Dockerfile
+      instruction:
+        keyword: "ARG"
+        matcher: "nodejs_version"
+  testVersionInReadme:
+    name: "Does the README.adoc have a variable NODEJS_VERSION"
+    kind: file
+    spec:
+      file: README.adoc
+      matchPattern: '(?m:^:NODEJS_VERSION:.*)'
+  testVersionInTestHarness:
+    name: "Does the test harness have variable NODEJS_VERSION"
+    kind: file
+    spec:
+      file: tests/asciidoctor.bats
+      matchPattern: '(?m:^NODEJS_VERSION=.*)'
+
+targets:
+  updateDockerfile:
+    name: "Update the value of ARG nodejs_version in the Dockerfile"
+    kind: dockerfile
+    spec:
+      file: Dockerfile
+      instruction:
+        keyword: "ARG"
+        matcher: "nodejs_version"
+    scmID: default
+  updateTestHarness:
+    name: "Update the key NODEJS_VERSION in the test harness"
+    kind: file
+    spec:
+      file: tests/asciidoctor.bats
+      matchPattern: '(?m:^NODEJS_VERSION=.*)'
+      content: 'NODEJS_VERSION={{ source `latestVersion` }}'
+    scmID: default
+  updateReadme:
+    name: "Update the key NODEJS_VERSION in the README.adoc file"
+    kind: file
+    spec:
+      file: README.adoc
+      matchPattern: '(?m:^:NODEJS_VERSION:.*)'
+      content: ':NODEJS_VERSION: {{ source `latestVersion` }}'
+    scmID: default
+
+pullrequests:
+  default:
+    kind: github
+    scmID: default
+    targets:
+      - updateDockerfile
+      - updateTestHarness
+      - updateReadme
+    spec:
+      labels:
+        - chore
+        - dependencies