diff --git a/.github/workflows/cmake.yml b/.github/workflows/cmake.yml
index 19e8f14..41f069a 100644
--- a/.github/workflows/cmake.yml
+++ b/.github/workflows/cmake.yml
@@ -118,6 +118,7 @@ jobs:
         sudo apt-add-repository 'deb http://azure.archive.ubuntu.com/ubuntu/ xenial universe'  
         sudo apt-add-repository 'deb http://azure.archive.ubuntu.com/ubuntu/ bionic main'
         sudo apt-add-repository 'deb http://azure.archive.ubuntu.com/ubuntu/ bionic universe'
+        sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
         
         sudo apt update
         ${{matrix.install}}