diff --git a/.github/workflows/pythonpackage.yml b/.github/workflows/pythonpackage.yml
index e941a89..24e1bd7 100644
--- a/.github/workflows/pythonpackage.yml
+++ b/.github/workflows/pythonpackage.yml
@@ -21,8 +21,8 @@ jobs:
       max-parallel: 4
       matrix:
         python-version: [3.8, 3.9, "3.10", "3.11"]
-        r-version: [4.2, 'release']
-        os: [ubuntu-20.04, ubuntu-22.04, ubuntu-latest, macOS-latest]
+        r-version: [4.3, 'release']
+        os: [ubuntu-22.04, ubuntu-latest, macOS-14]
     steps:
     - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}