diff --git a/.github/workflows/unit-test-os-versions.yml b/.github/workflows/unit-test-os-versions.yml
index 0191c807..5f6573a1 100644
--- a/.github/workflows/unit-test-os-versions.yml
+++ b/.github/workflows/unit-test-os-versions.yml
@@ -19,10 +19,10 @@ jobs:
     steps:
       - uses: actions/checkout@v1
 
-      - name: Set up Python 3.8
+      - name: Set up Python 3.11
         uses: actions/setup-python@v1
         with:
-          python-version: 3.8
+          python-version: 3.11
           architecture: x64
 
       - name: install sundials (ubuntu)
@@ -30,7 +30,7 @@ jobs:
         run: |
           sudo apt-get update
           sudo apt-get install libsundials-dev
-      
+
       - name: install sundials (macos)
         if: ${{ matrix.os == 'macos-latest' }}
         run: |