diff --git a/.github/workflows/continuous-delivery.yml b/.github/workflows/continuous-delivery.yml
index ce511c5..26a5176 100644
--- a/.github/workflows/continuous-delivery.yml
+++ b/.github/workflows/continuous-delivery.yml
@@ -10,19 +10,19 @@ on:
       
 jobs:
   build:
-
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
-    - name: Bump version and push tag
+    - name: Bump version and create tag
       id: semanticversion
-      uses: hennejg/github-tag-action@v4.1.jh5
+      uses: mathieudutour/github-tag-action@v6.2
       with:
         release_branches: master
         github_token: ${{ secrets.GITHUB_TOKEN }}
-        
+        fetch_all_tags: true
+
     - name: Verify and print new build number
       run: |
         if echo '${{ steps.semanticversion.outputs.new_tag }}' |grep -Eq '^v[0-9]+[.][0-9]+[.][0-9]+$'; then 
@@ -32,21 +32,13 @@ jobs:
           exit -1
         fi
 
-    ## Enable Caching
-    - uses: actions/cache@v4
-      with:
-        path: ~/.m2/repository
-        key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
-        restore-keys: |
-          ${{ runner.os }}-maven-
-
-    ## Configure JDK 11
     - name: Set up JDK 11
-      uses: actions/setup-java@v1
+      uses: actions/setup-java@v4
       with:
-        java-version: 11
+        java-version: '11'
+        distribution: 'temurin'
+        cache: 'maven'
 
-    ## Build with maven
     - name: Prepare maven settings
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -66,12 +58,12 @@ jobs:
     ## Deploy
     - name: Deploy package
       env:
-            GPG_EXECUTABLE: gpg
-            GPG_SECRET_KEYS: ${{ secrets.LEVIGO_GPG_KEYS }}
-            GPG_OWNERTRUST: ${{ secrets.LEVIGO_GPG_OWNERTRUST }}
-            GPG_PASSPHRASE: ${{ secrets.LEVIGO_GPG_PASSPHRASE }}
-            SONATYPE_USERNAME: ${{ secrets.LEVIGO_SONATYPE_USERNAME }}
-            SONATYPE_PASSWORD: ${{ secrets.LEVIGO_SONATYPE_PASSWORD }}
+        GPG_EXECUTABLE: gpg
+        GPG_SECRET_KEYS: ${{ secrets.LEVIGO_GPG_KEYS }}
+        GPG_OWNERTRUST: ${{ secrets.LEVIGO_GPG_OWNERTRUST }}
+        GPG_PASSPHRASE: ${{ secrets.LEVIGO_GPG_PASSPHRASE }}
+        SONATYPE_USERNAME: ${{ secrets.LEVIGO_SONATYPE_USERNAME }}
+        SONATYPE_PASSWORD: ${{ secrets.LEVIGO_SONATYPE_PASSWORD }}
       run: |
         echo "$GPG_SECRET_KEYS" | base64 --decode | $GPG_EXECUTABLE --import --no-tty --batch --yes
         echo "$GPG_OWNERTRUST" | base64 --decode | $GPG_EXECUTABLE --import-ownertrust --no-tty --batch --yes
@@ -98,13 +90,15 @@ jobs:
         branch: master
         github_token: ${{ secrets.GITHUB_TOKEN }}    
         
-    ## Notify Slack
-    - name: Notify slack
-      uses: hennejg/slack-build-notifier@v1.1
+    - name: Notify Developers
+      uses: 8398a7/action-slack@v3
       with:
         username: GitHub
         icon_emoji: octocat
+        channel: ci_project
+        status: ${{ job.status }}
+        fields: repo,message,commit,author,action,eventName,ref
         text: Released new version `${{ steps.semanticversion.outputs.new_version }}` of *${{ github.repository }}* to ${{ secrets.REPOSITORY_URL }}
       env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
+      if: always()
diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
index 9e8397e..fc4187e 100644
--- a/.github/workflows/continuous-integration.yml
+++ b/.github/workflows/continuous-integration.yml
@@ -10,37 +10,30 @@ on:
 
 jobs:
   build:
-
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v1
-
-    ## Enable Caching
-    - uses: actions/cache@v4
-      with:
-        path: ~/.m2/repository
-        key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
-        restore-keys: |
-          ${{ runner.os }}-maven-
+    - uses: actions/checkout@v4
 
-    ## Configure JDK 11
     - name: Set up JDK 11
-      uses: actions/setup-java@v1
+      uses: actions/setup-java@v4
       with:
         java-version: 11
+        distribution: 'temurin'
+        cache: maven
 
-    ## Build with maven
     - name: Perform build
       run: mvn verify
 
-    ## Notify Slack
-    - name: Notify slack
-      uses: hennejg/slack-build-notifier@v1.1
+    - name: Notify Developers
+      uses: 8398a7/action-slack@v3
       with:
         username: GitHub
         icon_emoji: octocat
+        channel: ci_project
+        status: ${{ job.status }}
+        fields: repo,message,commit,author,action,eventName,ref
+        text: ${{ github.workflow }} ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
       env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
       if: always()
diff --git a/.maven.xml b/.maven.xml
index f9ba5f5..984e726 100644
--- a/.maven.xml
+++ b/.maven.xml
@@ -5,16 +5,16 @@
   <servers>
     <server>
       <!-- Maven Central Deployment -->
-      <id>ossrh</id>
+      <id>central</id>
       <username>${env.SONATYPE_USERNAME}</username>
       <password>${env.SONATYPE_PASSWORD}</password>
     </server>
   </servers>
 
   <profiles>
-    <!-- Profile for ossrh deployment -->
+    <!-- Profile for central portal deployment -->
     <profile>
-      <id>ossrh</id>
+      <id>central</id>
       <activation>
         <activeByDefault>true</activeByDefault>
       </activation>
diff --git a/pom.xml b/pom.xml
index c22fb34..a008f59 100644
--- a/pom.xml
+++ b/pom.xml
@@ -30,7 +30,7 @@
   <licenses>
     <license>
       <name>BSD 3-Clause License</name>
-      <url>http://opensource.org/licenses/BSD-3-Clause</url>
+      <url>https://opensource.org/licenses/BSD-3-Clause</url>
       <distribution>repo</distribution>
     </license>
   </licenses>
@@ -39,7 +39,7 @@
     <developer>
       <name>Jörg Henne</name>
       <email>hennejg@gmail.com</email>
-      <organizationUrl>http://levigo.de</organizationUrl>
+      <organizationUrl>https://levigo.de</organizationUrl>
     </developer>
   </developers>
 
@@ -57,7 +57,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-surefire-plugin</artifactId>
-        <version>2.17</version>
+        <version>2.22.2</version>
         <configuration>
           <!-- see: https://stackoverflow.com/questions/53010200/maven-surefire-could-not-find-forkedbooter-class -->
           <argLine>-Xmx1024m -Xms1024m -XX:MaxPermSize=512m
@@ -74,7 +74,7 @@
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>4.13.1</version>
+      <version>4.13.2</version>
       <scope>test</scope>
     </dependency>
     <dependency>
@@ -100,14 +100,14 @@
         <plugins>
           <!-- To release to Maven central -->
           <plugin>
-            <groupId>org.sonatype.plugins</groupId>
-            <artifactId>nexus-staging-maven-plugin</artifactId>
-            <version>1.6.8</version>
+            <groupId>org.sonatype.central</groupId>
+            <artifactId>central-publishing-maven-plugin</artifactId>
+            <version>0.7.0</version>
             <extensions>true</extensions>
             <configuration>
-              <serverId>ossrh</serverId>
-              <nexusUrl>https://oss.sonatype.org/</nexusUrl>
-              <autoReleaseAfterClose>true</autoReleaseAfterClose>
+              <publishingServerId>central</publishingServerId>
+              <autoPublish>true</autoPublish>
+              <waitUntil>uploaded</waitUntil>
             </configuration>
           </plugin>