diff --git a/.github/workflows/.github-ci.yaml b/.github/workflows/.github-ci.yaml
index e8c7aed..eec6ce8 100644
--- a/.github/workflows/.github-ci.yaml
+++ b/.github/workflows/.github-ci.yaml
@@ -3,6 +3,7 @@ name: ci-workflow
 on: [push]
 jobs:
   ci:
+    runs-on: ubuntu-latest
     steps:
       # checkout repository
       - name: checkout