diff --git a/.github/workflows/mandelbrot.yml b/.github/workflows/mandelbrot.yml
index f019905..86defd1 100644
--- a/.github/workflows/mandelbrot.yml
+++ b/.github/workflows/mandelbrot.yml
@@ -51,7 +51,7 @@ jobs:
       fail-fast: false
       matrix:
         compiler: [ g++, clang++ ]
-        standard: [ c++14, c++17, c++2a ]
+        standard: [ c++14, c++17, c++20 ]
     steps:
       - uses: actions/checkout@v3
         with:
@@ -122,7 +122,7 @@ jobs:
       fail-fast: false
       matrix:
         compiler: [ g++-12, clang++-14 ]
-        standard: [ c++14, c++17, c++20, c++2b ]
+        standard: [ c++14, c++17, c++20 ]
     steps:
       - uses: actions/checkout@v3
         with:
@@ -195,7 +195,7 @@ jobs:
       fail-fast: false
       matrix:
         compiler: [ g++ ]
-        standard: [ c++14, c++17, c++2a ]
+        standard: [ c++14, c++17, c++20 ]
     steps:
       - uses: actions/checkout@v3
         with:
@@ -264,7 +264,7 @@ jobs:
       fail-fast: false
       matrix:
         compiler: [ g++ ]
-        standard: [ c++14, c++2a ]
+        standard: [ c++14, c++20 ]
     steps:
       - uses: actions/checkout@v3
         with:
@@ -331,7 +331,7 @@ jobs:
       fail-fast: false
       matrix:
         compiler: [ g++ ]
-        standard: [ c++14, c++2a ]
+        standard: [ c++14, c++20 ]
     steps:
       - uses: actions/checkout@v3
         with:
@@ -398,7 +398,7 @@ jobs:
       fail-fast: false
       matrix:
         compiler: [ g++ ]
-        standard: [ c++14, c++2a ]
+        standard: [ c++14, c++20 ]
     steps:
       - uses: actions/checkout@v3
         with:
diff --git a/.github/workflows/mandelbrot_sonar.yml b/.github/workflows/mandelbrot_sonar.yml
index 3995023..790ea0f 100644
--- a/.github/workflows/mandelbrot_sonar.yml
+++ b/.github/workflows/mandelbrot_sonar.yml
@@ -1,5 +1,5 @@
-# ------------------------------------------------------------------------------
-#  Copyright Christopher Kormanyos 2022.
+# ------------------------------------------------------------------------------
+#  Copyright Christopher Kormanyos 2022 - 2023.
 #  Distributed under the Boost Software License,
 #  Version 1.0. (See accompanying file LICENSE_1_0.txt
 #  or copy at http://www.boost.org/LICENSE_1_0.txt)
@@ -17,7 +17,7 @@ jobs:
     name: sonar-gcc-native
     runs-on: ubuntu-latest
     env:
-      SONAR_SCANNER_VERSION: 4.7.0.2747
+      SONAR_SCANNER_VERSION: 5.0.1.3006
       SONAR_SERVER_URL: "https://sonarcloud.io"
       BUILD_WRAPPER_OUT_DIR: build_wrapper_output_directory # Directory where build-wrapper output will be placed
     steps:
@@ -70,17 +70,18 @@ jobs:
           make all
           cd ..
           mkdir -p images/tmp
-      - name: Set up JDK 11
+      - name: Set up JDK 17
         uses: actions/setup-java@v3
         with:
-          java-version: 11
-          distribution: 'zulu'
+          distribution: 'temurin'
+          java-version: '17'
+          overwrite-settings: true
       - name: Download and set up sonar-scanner
         env:
           SONAR_SCANNER_DOWNLOAD_URL: https://binaries.sonarsource.com/Distribution/sonar-scanner-cli/sonar-scanner-cli-${{ env.SONAR_SCANNER_VERSION }}-linux.zip
         run: |
           mkdir -p $HOME/.sonar
-          curl -sSLo $HOME/.sonar/sonar-scanner.zip ${{ env.SONAR_SCANNER_DOWNLOAD_URL }} 
+          curl -sSLo $HOME/.sonar/sonar-scanner.zip ${{ env.SONAR_SCANNER_DOWNLOAD_URL }}
           unzip -o $HOME/.sonar/sonar-scanner.zip -d $HOME/.sonar/
           echo "$HOME/.sonar/sonar-scanner-${{ env.SONAR_SCANNER_VERSION }}-linux/bin" >> $GITHUB_PATH
       - name: Download and set up build-wrapper
@@ -92,10 +93,12 @@ jobs:
           echo "$HOME/.sonar/build-wrapper-linux-x86" >> $GITHUB_PATH
       - name: Run build-wrapper
         run: |
+          java -version
           build-wrapper-linux-x86-64 --out-dir ${{ env.BUILD_WRAPPER_OUT_DIR }} g++ -c -finline-functions -march=native -mtune=native -O3 -Wall -Wextra -std=c++2a -I. -Ijpeg/jpeg-6b-2022 -I../boost-root -pthread test/test_mandelbrot.cpp -o test_mandelbrot.o && g++ test_mandelbrot.o -lpthread -ljpeg-6b -Ljpeg/jpeg-6b-2022/obj -o test_mandelbrot.exe
       - name: Run sonar-scanner
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
         run: |
+          java -version
           sonar-scanner -Dsonar.projectKey=ckormanyos_mandelbrot -Dsonar.projectName=mandelbrot --define sonar.host.url="${{ env.SONAR_SERVER_URL }}" --define sonar.cfamily.build-wrapper-output="${{ env.BUILD_WRAPPER_OUT_DIR }}"