diff --git a/.github/workflows/ubuntu-release.yml b/.github/workflows/ubuntu-release.yml
index 228fe7f90..4ecc121b1 100644
--- a/.github/workflows/ubuntu-release.yml
+++ b/.github/workflows/ubuntu-release.yml
@@ -98,6 +98,17 @@ jobs:
           cd /usr/src/googletest/
           sudo cmake .
           sudo cmake --build . --target install
+          sudo apt-get install -y g++-10 gcc-10
+
+      - name: Update alternatives
+        #mpicxx  uses "g++" so we need g++ to be symbolic link to g++-10
+        run: |
+          sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-10 10
+          sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-10 10
+          sudo update-alternatives --install /usr/bin/cc cc /usr/bin/gcc 30
+          sudo update-alternatives --set cc /usr/bin/gcc
+          sudo update-alternatives --install /usr/bin/c++ c++ /usr/bin/g++ 30
+          sudo update-alternatives --set c++ /usr/bin/g++
 
       - name: Read antares-solver version
         id: antares-version
diff --git a/.github/workflows/ubuntu-system-deps-build.yml b/.github/workflows/ubuntu-system-deps-build.yml
index e5153f2d3..4fee1e7b7 100644
--- a/.github/workflows/ubuntu-system-deps-build.yml
+++ b/.github/workflows/ubuntu-system-deps-build.yml
@@ -43,6 +43,17 @@ jobs:
           cd /usr/src/googletest/
           sudo cmake .
           sudo cmake --build . --target install
+          sudo apt-get install -y g++-10 gcc-10
+
+      - name: Update alternatives
+        #mpicxx  uses "g++" so we need g++ to be symbolic link to g++-10
+        run: |
+          sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-10 10
+          sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-10 10
+          sudo update-alternatives --install /usr/bin/cc cc /usr/bin/gcc 30
+          sudo update-alternatives --set cc /usr/bin/gcc
+          sudo update-alternatives --install /usr/bin/c++ c++ /usr/bin/g++ 30
+          sudo update-alternatives --set c++ /usr/bin/g++
 
       - name: Compile Boost
         uses: ./.github/workflows/compile-boost