diff --git a/.github/workflows/cmake-multi-platform.yml b/.github/workflows/cmake-multi-platform.yml
index 7e5fef4..e4b06c7 100644
--- a/.github/workflows/cmake-multi-platform.yml
+++ b/.github/workflows/cmake-multi-platform.yml
@@ -52,12 +52,12 @@ jobs:
         if: matrix.os == 'ubuntu-latest' && matrix.c_compiler == 'gcc'
         run: |
           g++ --version
+          sudo apt update
+          sudo apt install software-properties-common
           sudo add-apt-repository ppa:ubuntu-toolchain-r/test
           sudo apt update
-          sudo apt install g++-${{ matrix.gcc_version }}
-          sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-${{ matrix.gcc_version }} ${{ matrix.gcc_version }}0
-          sudo update-alternatives --config gcc
-          sudo update-alternatives --config g++
+          sudo apt install gcc-${{ matrix.gcc_version }} g++-${{ matrix.gcc_version }} -y
+          sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-${{ matrix.gcc_version }} ${{ matrix.gcc_version }} --slave /usr/bin/g++ g++ /usr/bin/g++-${{ matrix.gcc_version }}
           g++ --version