diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..9bd0170
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,11 @@
+version: 2
+updates:
+  - package-ecosystem: "docker"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c8ae412..8985795 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -2,9 +2,11 @@ name: CI
 
 on:
   push:
-    branches: [ main ]
+    branches:
+      - main
   pull_request:
-    branches: [ main ]
+    branches:
+      - main
 
 jobs:
   lint-readme:
diff --git a/.github/workflows/release-tst.yml b/.github/workflows/release-tst.yml
index 0633135..3707878 100644
--- a/.github/workflows/release-tst.yml
+++ b/.github/workflows/release-tst.yml
@@ -1,12 +1,16 @@
 name: Release test
 
-# Controls when the action will run. Triggers the workflow on push or pull request
-# events but only for the main branch
+permissions:
+  contents: write
+  issues: write
+
 on:
   push:
-    branches: [ main ]
+    branches:
+      - main
   pull_request:
-    branches: [ main ]
+    branches:
+      - main
 
 jobs:
   # Only for testing of the release environment.
@@ -20,7 +24,7 @@ jobs:
       - name: Setup Nodejs
         uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
 
       - name: Install dependencies
         run: npm install @semantic-release/changelog @semantic-release/git @semantic-release/changelog @semantic-release/commit-analyzer @semantic-release/exec @semantic-release/git semantic-release/release-notes-generator
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 1103760..c5b8745 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -1,5 +1,8 @@
 name: Release version
 
+permissions:
+  contents: write
+  issues: write
 
 on:
   push:
@@ -7,6 +10,7 @@ on:
       - main
   schedule:
     - cron: '0 3 * * 0'
+  workflow_dispatch:
 
 jobs:
   release:
@@ -21,7 +25,7 @@ jobs:
       - name: Setup Nodejs
         uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
 
       - name: Install dependencies
         run: npm install @semantic-release/changelog @semantic-release/git @semantic-release/changelog @semantic-release/commit-analyzer @semantic-release/exec @semantic-release/git semantic-release/release-notes-generator
diff --git a/Dockerfile b/Dockerfile
index 641e7dd..aa3ba56 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,5 @@
-FROM alpine:3
+FROM alpine:3.20
+
 LABEL org.opencontainers.image.authors="Martin Kock <code@deeagle.de>" \
       org.opencontainers.image.url="https://github.com/deeagle/xmllint-container" \
       org.opencontainers.image.title="XML/DTD tools." \
diff --git a/README.md b/README.md
index 9460eee..762296a 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,6 @@
 
 ![Build status](https://github.com/deeagle/xmllint-container/workflows/CI/badge.svg)
 ![Build status](https://github.com/deeagle/xmllint-container/workflows/Release%20version/badge.svg)
-[![Linux](https://svgshare.com/i/Zhy.svg)](https://svgshare.com/i/Zhy.svg)
 [![Alpine](https://img.shields.io/badge/Alpine_Linux-0D597F?style=flat-square&logo=alpine-linux&logoColor=white)](https://img.shields.io/badge/Alpine_Linux-0D597F?style=flat-square&logo=alpine-linux&logoColor=white)
 [![Docker](https://badgen.net/badge/icon/docker?icon=docker&label)](https://hub.docker.com/r/docdee/xmllint)