diff --git a/.github/workflows/system.yml b/.github/workflows/system.yml
index c255647a..04554714 100644
--- a/.github/workflows/system.yml
+++ b/.github/workflows/system.yml
@@ -30,14 +30,14 @@ jobs:
               cxx: "g++",
             }
           - {
-              name: "Ubuntu Bionic GCC",
-              os: ubuntu-18.04,
+              name: "Ubuntu Focal GCC",
+              os: ubuntu-20.04,
               build_type: "Release",
               cc: "gcc",
               cxx: "g++",
             }
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Install dependencies on ubuntu
         if: startsWith(matrix.config.name, 'Ubuntu')