@@ -104,11 +104,11 @@ jobs:
           - os: macos-latest
             python: "3.15t"
 
-          # Ubuntu: test deadsnakes Python versions which are not supported by
-          # GHA python-versions.
-          # https://launchpad.net/~deadsnakes/+archive/ubuntu/ppa
+          # Old Python versions are only available on old Ubuntu versions
           - os: ubuntu-22.04
             python: "3.7"
+          - os: ubuntu-24.04
+            python: "3.8"
 
     steps:
         # https://github.com/actions/checkout