diff --git a/.github/workflows/cmake.yml b/.github/workflows/cmake.yml
index a11dd408..1508a476 100644
--- a/.github/workflows/cmake.yml
+++ b/.github/workflows/cmake.yml
@@ -162,42 +162,6 @@ jobs:
           cmake --version
           gcc --version
 
-      - name: Install dependencies on ubuntu9
-        if: startsWith(matrix.config.name, 'Ubuntu GCC 9')
-        run: |
-          echo Update gcc-9 =======================================================================
-          echo gcc version before
-          gcc --version
-          sudo add-apt-repository ppa:ubuntu-toolchain-r/test
-          sudo apt-get update
-          sudo apt-get install ninja-build cmake gcc-9 g++-9
-          sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-9 90 --slave /usr/bin/g++ g++ /usr/bin/g++-9 --slave /usr/bin/gcov gcov /usr/bin/gcov-9
-          echo gcc version after
-          gcc --version
-          echo Update ninja =======================================================================
-          echo ninja version before
-          ninja --version
-          # wget https://github.com/ninja-build/ninja/releases/download/v1.10.0/ninja-linux.zip
-          wget https://github.com/ninja-build/ninja/releases/latest/download/ninja-linux.zip
-          sudo unzip ninja-linux.zip -d /usr/local/bin/
-          sudo update-alternatives --install /usr/bin/ninja ninja /usr/local/bin/ninja 1 --force
-          echo ninja version after
-          ninja --version
-          echo Update cmake =======================================================================
-          echo cmake version before
-          cmake --version
-          # curl --silent "https://api.github.com/repos/Kitware/CMake/releases/latest" | sed -n 's/.*tag_name":\s"\(.*\)".*/\1/p' | head -2
-          # wget https://github.com/Kitware/CMake/releases/latest/download/cmake-3.16.5-Linux-x86_64.sh
-          cmake_version=$(curl --silent "https://api.github.com/repos/Kitware/CMake/releases/latest" | sed -n 's/.*tag_name":\s"\(.*\)".*/\1/p' | head -2 | cut -c 2-)
-          echo cmake download latest v$cmake_version version
-          wget https://github.com/Kitware/CMake/releases/download/v$cmake_version/cmake-$cmake_version-Linux-x86_64.sh
-          chmod +x cmake-$cmake_version-Linux-x86_64.sh
-          sudo mkdir /opt/cmake
-          sudo ./cmake-$cmake_version-Linux-x86_64.sh --prefix=/opt/cmake --skip-license
-          sudo update-alternatives --install /usr/bin/cmake cmake /opt/cmake/bin/cmake 1 --force
-          echo cmake version after
-          cmake --version
-
       - name: Install dependencies on macos
         if: startsWith(matrix.config.os, 'macos')
         run: |
@@ -229,22 +193,6 @@ jobs:
         run: |
           sudo apt-get install -y imagemagick
 
-      #- name: Cache Qt5
-      #  if: endsWith(matrix.config.name, 'Qt5')
-      #  id: cache-qt-5-15
-      #  uses: actions/cache@v1 # not v2!
-      #  with:
-      #    path: ../Qt/5.15.2
-      #    key: ${{ runner.os }}-QtCache-Qt5
-#
-      #- name: Cache Qt6
-      #  if: endsWith(matrix.config.name, 'Qt6')
-      #  id: cache-qt-6-2
-      #  uses: actions/cache@v1 # not v2!
-      #  with:
-      #    path: ../Qt/6.5.0
-      #    key: ${{ runner.os }}-QtCache-Qt6
-
       - name: Install Qt5
         if: endsWith(matrix.config.name, 'Qt5')
         uses: jurplel/install-qt-action@v4