diff --git a/.github/workflows/build-and-release.yml b/.github/workflows/build-and-release.yml
index 704fa65..9b5428e 100644
--- a/.github/workflows/build-and-release.yml
+++ b/.github/workflows/build-and-release.yml
@@ -12,7 +12,7 @@ env:
 
 jobs:
   test_and_publish:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - name: Checkout
         uses: actions/checkout@v2
@@ -47,7 +47,7 @@ jobs:
           python setup.py sdist bdist_wheel
 
   push_to_registry_and_deploy:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     needs: [test_and_publish]
     if: github.event_name == 'push' && github.ref == 'refs/heads/master'
     steps: