diff --git a/.github/workflows/site.yaml b/.github/workflows/site.yaml
index af8e7c6..ea7215c 100644
--- a/.github/workflows/site.yaml
+++ b/.github/workflows/site.yaml
@@ -12,17 +12,17 @@ jobs:
   # Publish the application on github pages
   publish:
     # use ubuntu
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-20.04
 
     steps:
     # Checks-out  $GITHUB_WORKSPACE
     - name: Checkout
       uses: actions/checkout@v2
       
-    - name: Setup Python 3.9
+    - name: Setup Python 3.8
       uses: actions/setup-python@v1
       with:
-        python-version: 3.9
+        python-version: 3.8
 
     # install requirements
     - name: Install requirements