diff --git a/.github/workflows/python-app.yaml b/.github/workflows/python-app.yaml
index dfbb81f3..3df313d2 100644
--- a/.github/workflows/python-app.yaml
+++ b/.github/workflows/python-app.yaml
@@ -12,12 +12,13 @@ permissions:
 jobs:
   build:
     runs-on: ubuntu-20.04
+    container:
+      image: python:2.7.18-buster
     steps:
-    - uses: actions/checkout@v3
-    - name: Set up Python 2.7.18
-      uses: actions/setup-python@v3
-      with:
-        python-version: "2.7.18"
+    - uses: actions/checkout@v4
+    # - uses: LizardByte/setup-python-action@master
+      # with:
+      #   python-version: '2.7'
     - name: Install OneFLUX
       run: |
         python -m pip install --upgrade pip