diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 720bee3f0f0aee319442c81e391d9bcd01ff49e5..2de7ab57350c2d14978258dcf0d8c48f02c9770f 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -7,6 +7,7 @@ on:
 jobs:
   test:
     name: test
+    runs-on: ubuntu-latest
     container: python:3.8
     steps:
       - run: cd backend/secfit
@@ -15,6 +16,7 @@ jobs:
 
   staging:
     name: staging
+    runs-on: ubuntu-latest
     container: ruby
     needs: [test]
     steps: