diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9c4e4c9..6f75827 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,12 +6,14 @@ jobs:
       fail-fast: false
       matrix:
         os: ['ubuntu-latest']
-        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12', '3.13']
+        python-version: ['2.7', '3.8', '3.9', '3.10', '3.11', '3.12', '3.13']
         include:
           - os: macos-latest
             python-version: '3.13'
           # - os: windows-latest  # TODO: Fix the Windows test that runs in an infinite loop
           #   python-version: '3.13'
+          - os: 'ubuntu-20.04'  # Legacy Python is not supported on Ubuntu-2022 or 2024
+            python-version: '2.7'
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4