diff --git a/.github/workflows/checks.yaml b/.github/workflows/checks.yaml
index 1683a2c..4da9096 100644
--- a/.github/workflows/checks.yaml
+++ b/.github/workflows/checks.yaml
@@ -16,6 +16,7 @@ on:
 
 jobs:
   test:
+    runs-on: ubuntu-latest
     permissions:
       pull-requests: write
     timeout-minutes: 5
@@ -24,7 +25,6 @@ jobs:
       fail-fast: false
       matrix:
         python-version: ['3.8', '3.9', '3.10', '3.11']
-        os: [ubuntu-latest]
     steps:
       - name: Checkout the repository
         uses: actions/checkout@v4