diff --git a/.jenkins/build/Jenkinsfile b/.jenkins/build/Jenkinsfile
index cdc8cce..4ddd89d 100644
--- a/.jenkins/build/Jenkinsfile
+++ b/.jenkins/build/Jenkinsfile
@@ -8,7 +8,7 @@ pipeline {
         REGISTRY_DOMAIN = 'registry.on.ops.docupike.net'
         REGISTRY_PREFIX = "${REGISTRY_DOMAIN}/"
         SSH_KEY_DOCS = '/usr/local/share/jenkins-agent/jenkins-ops'
-        TEAMS_WEBHOOK = credentials('teams-webhook-tops')
+        GOOGLE_CHAT_WEBHOOK = credentials('google-chat-webhook-jenkins')
     }
     stages {
         stage('Setup') {
@@ -31,24 +31,16 @@ pipeline {
         always {
             sh('docker compose down --remove-orphans --volumes')
             deleteDir()
-        }
-        failure {
-            office365ConnectorSend webhookUrl: '${env.TEAMS_WEBHOOK}',
-                status: "${currentBuild.currentResult.toLowerCase()}",
-                message: 'Jenkins kindly asks for your attention',
-                adaptiveCards: true
-        }
-        unstable {
-            office365ConnectorSend webhookUrl: '${env.TEAMS_WEBHOOK}',
-                status: "${currentBuild.currentResult.toLowerCase()}",
-                message: 'Jenkins kindly asks for your attention',
-                adaptiveCards: true
-        }
-        aborted {
-            office365ConnectorSend webhookUrl: '${env.TEAMS_WEBHOOK}',
-                status: "${currentBuild.currentResult.toLowerCase()}",
-                message: 'Jenkins kindly asks for your attention',
-                adaptiveCards: true
+            googlechatnotification(
+                url: "${env.GOOGLE_CHAT_WEBHOOK}",
+                notifyAborted: true,
+                notifyFailure: true,
+                notifyNotBuilt: true,
+                notifyUnstable: true,
+                message:
+                    "<${env.BUILD_URL}|${currentBuild.fullDisplayName}> " +
+                    "*${currentBuild.currentResult}*"
+            )
         }
     }
 }
diff --git a/Dockerfile b/Dockerfile
index b56556e..45a73aa 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:questing-20251217
+FROM ubuntu:resolute-20260421
 
 ARG DEBIAN_FRONTEND=noninteractive
 ARG HTTP_PROXY
@@ -27,7 +27,7 @@ RUN apt-get update; \
         locales \
         lsb-release \
         # Required by npm-groovy-lint:
-        openjdk-17-jre \
+        openjdk-21-jre \
         openssh-client \
         openssl \
         python3 \
@@ -84,7 +84,7 @@ RUN curl -OfsSL \
 
 # Docker:
 # renovate: datasource=github-releases depName=moby/moby
-ARG DOCKER_VERSION=29.0.4
+ARG DOCKER_VERSION=29.5.2
 RUN curl -fsSL \
         https://download.docker.com/linux/ubuntu/gpg | \
         gpg --dearmor > /etc/apt/keyrings/docker.gpg; \
@@ -110,7 +110,7 @@ RUN curl -fsSL \
 
 # Docker Compose:
 # renovate: datasource=github-releases depName=docker/compose
-ARG DOCKER_COMPOSE_VERSION=2.40.3
+ARG DOCKER_COMPOSE_VERSION=5.1.4
 RUN curl -OfsSL \
         "https://github.com/docker/compose/releases/download/v${DOCKER_COMPOSE_VERSION}/docker-compose-linux-x86_64"; \
     curl -OfsSL \
@@ -126,7 +126,7 @@ RUN curl -OfsSL \
 
 # editorconfig-checker (ec):
 # renovate: datasource=github-releases depName=editorconfig-checker/editorconfig-checker
-ARG EC_VERSION=3.4.1
+ARG EC_VERSION=3.6.1
 RUN curl -OfsSL \
         "https://github.com/editorconfig-checker/editorconfig-checker/releases/download/v${EC_VERSION}/ec-linux-amd64.tar.gz"; \
     tar -xzf ec-linux-amd64.tar.gz; \
@@ -137,7 +137,7 @@ RUN curl -OfsSL \
 
 # gitleaks:
 # renovate: datasource=github-releases depName=gitleaks/gitleaks
-ARG GITLEAKS_VERSION=8.29.1
+ARG GITLEAKS_VERSION=8.30.1
 RUN curl -OfsSL \
         "https://github.com/gitleaks/gitleaks/releases/download/v${GITLEAKS_VERSION}/gitleaks_${GITLEAKS_VERSION}_linux_x64.tar.gz"; \
     curl -OfsSL \
@@ -156,9 +156,9 @@ RUN curl -OfsSL \
 
 # Node.js and NPM:
 # renovate: datasource=github-releases depName=nodejs/node
-ARG NODE_VERSION=24.11.1
+ARG NODE_VERSION=24.15.0
 # renovate: datasource=github-releases depName=npm/cli
-ARG NPM_VERSION=11.6.3
+ARG NPM_VERSION=11.15.0
 RUN curl -fsSL https://raw.githubusercontent.com/tj/n/master/bin/n \
     -o /usr/local/bin/n; \
     chmod 0755 /usr/local/bin/n; \
diff --git a/README.md b/README.md
index 861f88b..5473330 100644
--- a/README.md
+++ b/README.md
@@ -23,6 +23,6 @@ Do you like to [get in touch with us](SUPPORT.md)?
 
 ## Copyright & License
 
-Copyright (C) 2019-25 [i-doit GmbH](https://www.i-doit.com/)
+Copyright (C) 2019-26 [i-doit GmbH](https://www.i-doit.com/)
 
 This work is licensed under a [Creative Commons Attribution-ShareAlike 4.0 International License](https://creativecommons.org/licenses/by-sa/4.0/).
diff --git a/i18n/mkdocs.yml b/i18n/mkdocs.yml
index 3b90eb9..6fbc758 100644
--- a/i18n/mkdocs.yml
+++ b/i18n/mkdocs.yml
@@ -1,6 +1,6 @@
 ---
 site_author: i-doit GmbH
-copyright: Copyright &copy; 2019-25 i-doit GmbH
+copyright: Copyright &copy; 2019-26 i-doit GmbH
 repo_url: https://github.com/docupike/docs
 strict: true
 validation: