diff --git a/.github/workflows/test_build.yml b/.github/workflows/test_build.yml
index 58ef50dc..f701322a 100644
--- a/.github/workflows/test_build.yml
+++ b/.github/workflows/test_build.yml
@@ -38,6 +38,7 @@ jobs:
         run: |
           sudo apt-get update -y
           sudo apt-get upgrade
+          sudo add-apt-repository ppa:ubuntu-toolchain-r/ppa -y
           sudo apt-get install gcc-11 g++-11 -y
       - name: Check compilers for ubuntu
         if: matrix.os == 'ubuntu-20.04'