diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 154fcc7..d255548 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -16,8 +16,6 @@ jobs:
         uses: actions/setup-node@v2
         with:
           node-version: 14
-      - name: Setup sonarqube
-        uses: warchant/setup-sonar-scanner@v3
       - name: Setup Docker
         run: |
           docker pull s1hofmann/nut-ci:latest
@@ -40,15 +38,11 @@ jobs:
         run: |
           npm run coverage:merge
           npm run coverage:merge-report
-      - name: Run sonarqube
+      - name: Send results to SonarCloud
+        uses: SonarSource/sonarcloud-github-action@v1.4
         env:
-          # to get access to secrets.SONAR_TOKEN, provide GITHUB_TOKEN
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: sonar-scanner
-          -Dsonar.login=${{ secrets.SONAR_TOKEN }}
-          -Dsonar.organization=nut-tree
-          -Dsonar.host.url=https://sonarcloud.io/
-          -Dsonar.projectKey=nut-tree:nut.js
+          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
 
   test:
     needs:
@@ -56,7 +50,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest, windows-latest, macos-latest ]
-        node: [ 10, 11, 12, 13, 14 ]
+        node: [ 10, 12, 14 ]
         exclude:
           - os: ubuntu-latest
             node: 14
@@ -67,7 +61,7 @@ jobs:
       - name: Set up node
         uses: actions/setup-node@v2
         with:
-          node-version: 14
+          node-version: ${{matrix.node}}
       - name: Setup Docker
         if: ${{matrix.os == 'ubuntu-latest'}}
         run: |
@@ -85,4 +79,4 @@ jobs:
           run: npm run coverage -- --coverageDirectory=coverage/unit
       - name: Run Docker E2E tests
         if: ${{matrix.os == 'ubuntu-latest'}}
-        run: docker exec nut-ci bash -c "bash $PWD/.build/build.sh ${PWD} 14"
+        run: docker exec nut-ci bash -c "bash $PWD/.build/build.sh ${PWD} ${{matrix.node}}"
diff --git a/.github/workflows/snapshot_release.yaml b/.github/workflows/snapshot_release.yaml
index 45f0b8e..4ef8f12 100644
--- a/.github/workflows/snapshot_release.yaml
+++ b/.github/workflows/snapshot_release.yaml
@@ -5,59 +5,13 @@ on:
       - develop
 
 jobs:
-  sonar:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Set up Git repository
-        uses: actions/checkout@v2
-      - name: Set up node
-        uses: actions/setup-node@v2
-        with:
-          node-version: 14
-      - name: Setup sonarqube
-        uses: warchant/setup-sonar-scanner@v3
-      - name: Setup Docker
-        run: |
-          docker pull s1hofmann/nut-ci:latest
-          docker run -it -d --name nut-ci --shm-size 4gb --user $(id -u):$(id -g) -v ${PWD}:${PWD}:rw s1hofmann/nut-ci:latest bash
-      - name: Install
-        run: npm ci
-      - name: Compile
-        run: npm run compile
-      - name: Init e2e test subpackage
-        run: npm --prefix e2e/tests ci
-      - name: Clean coverage report
-        run: npm run coverage:clean
-      - name: Generate coverage report
-        uses: GabrielBB/xvfb-action@v1
-        with:
-          run: npm run coverage -- --coverageDirectory=coverage/unit
-      - name: Run Docker E2E tests
-        run: docker exec nut-ci bash -c "bash $PWD/.build/build.sh ${PWD} 14"
-      - name: Merge coverage reports
-        run: |
-          npm run coverage:merge
-          npm run coverage:merge-report
-      - name: Run sonarqube
-        env:
-          # to get access to secrets.SONAR_TOKEN, provide GITHUB_TOKEN
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: sonar-scanner
-          -Dsonar.login=${{ secrets.SONAR_TOKEN }}
-          -Dsonar.organization=nut-tree
-          -Dsonar.host.url=https://sonarcloud.io/
-          -Dsonar.projectKey=nut-tree:nut.js
-
   test:
     needs:
       - sonar
     strategy:
       matrix:
         os: [ ubuntu-latest, windows-latest, macos-latest ]
-        node: [ 10, 11, 12, 13, 14 ]
-        exclude:
-          - os: ubuntu-latest
-            node: 14
+        node: [ 10, 12, 14 ]
     runs-on: ${{matrix.os}}
     steps:
       - name: Set up Git repository
@@ -65,7 +19,7 @@ jobs:
       - name: Set up node
         uses: actions/setup-node@v2
         with:
-          node-version: 14
+          node-version: ${{matrix.node}}
       - name: Setup Docker
         if: ${{matrix.os == 'ubuntu-latest'}}
         run: |
@@ -77,13 +31,13 @@ jobs:
         run: npm run compile
       - name: Init e2e test subpackage
         run: npm --prefix e2e/tests ci
-      - name: Generate coverage report
+      - name: Run tests
         uses: GabrielBB/xvfb-action@v1
         with:
-          run: npm run coverage -- --coverageDirectory=coverage/unit
+          run: npm test
       - name: Run Docker E2E tests
         if: ${{matrix.os == 'ubuntu-latest'}}
-        run: docker exec nut-ci bash -c "bash $PWD/.build/build.sh ${PWD} 14"
+        run: docker exec nut-ci bash -c "bash $PWD/.build/build.sh ${PWD} ${{matrix.node}}"
 
   deploy:
     needs:
diff --git a/.github/workflows/tagged_release.yaml b/.github/workflows/tagged_release.yaml
index 053631c..bc22c7c 100644
--- a/.github/workflows/tagged_release.yaml
+++ b/.github/workflows/tagged_release.yaml
@@ -5,59 +5,13 @@ on:
       - v*.*.*
 
 jobs:
-  sonar:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Set up Git repository
-        uses: actions/checkout@v2
-      - name: Set up node
-        uses: actions/setup-node@v2
-        with:
-          node-version: 14
-      - name: Setup sonarqube
-        uses: warchant/setup-sonar-scanner@v3
-      - name: Setup Docker
-        run: |
-          docker pull s1hofmann/nut-ci:latest
-          docker run -it -d --name nut-ci --shm-size 4gb --user $(id -u):$(id -g) -v ${PWD}:${PWD}:rw s1hofmann/nut-ci:latest bash
-      - name: Install
-        run: npm ci
-      - name: Compile
-        run: npm run compile
-      - name: Init e2e test subpackage
-        run: npm --prefix e2e/tests ci
-      - name: Clean coverage report
-        run: npm run coverage:clean
-      - name: Generate coverage report
-        uses: GabrielBB/xvfb-action@v1
-        with:
-          run: npm run coverage -- --coverageDirectory=coverage/unit
-      - name: Run Docker E2E tests
-        run: docker exec nut-ci bash -c "bash $PWD/.build/build.sh ${PWD} 14"
-      - name: Merge coverage reports
-        run: |
-          npm run coverage:merge
-          npm run coverage:merge-report
-      - name: Run sonarqube
-        env:
-          # to get access to secrets.SONAR_TOKEN, provide GITHUB_TOKEN
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: sonar-scanner
-          -Dsonar.login=${{ secrets.SONAR_TOKEN }}
-          -Dsonar.organization=nut-tree
-          -Dsonar.host.url=https://sonarcloud.io/
-          -Dsonar.projectKey=nut-tree:nut.js
-
   test:
     needs:
       - sonar
     strategy:
       matrix:
         os: [ ubuntu-latest, windows-latest, macos-latest ]
-        node: [ 10, 11, 12, 13, 14 ]
-        exclude:
-          - os: ubuntu-latest
-            node: 14
+        node: [ 10, 12, 14 ]
     runs-on: ${{matrix.os}}
     steps:
       - name: Set up Git repository
@@ -65,7 +19,7 @@ jobs:
       - name: Set up node
         uses: actions/setup-node@v2
         with:
-          node-version: 14
+          node-version: ${{matrix.node}}
       - name: Setup Docker
         if: ${{matrix.os == 'ubuntu-latest'}}
         run: |
@@ -80,10 +34,10 @@ jobs:
       - name: Generate coverage report
         uses: GabrielBB/xvfb-action@v1
         with:
-          run: npm run coverage -- --coverageDirectory=coverage/unit
+          run: npm test
       - name: Run Docker E2E tests
         if: ${{matrix.os == 'ubuntu-latest'}}
-        run: docker exec nut-ci bash -c "bash $PWD/.build/build.sh ${PWD} 14"
+        run: docker exec nut-ci bash -c "bash $PWD/.build/build.sh ${PWD} ${{matrix.node}}"
 
   deploy:
     needs: