diff --git a/.github/workflows/pythonapp.yml b/.github/workflows/pythonapp.yml
index a218b2e..370cd42 100644
--- a/.github/workflows/pythonapp.yml
+++ b/.github/workflows/pythonapp.yml
@@ -16,7 +16,7 @@ jobs:
         matrix:
             os: [ubuntu-latest, macos-latest, windows-latest]
             python: [3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 3.10]
-    runs-on: {{ matrix.os }}
+    runs-on: ubuntu-latest #{{ matrix.os }}
     steps:
       - uses: actions/checkout@v2
       - name: Setup JDK