diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index a66d1fe..24e835e 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -11,11 +11,10 @@ on:
 jobs:
   Test:
     name: Test
-    runs-on: ${{ matrix.os }}
+    runs-on: ubuntu-latest
     strategy:
       matrix:
         python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
-        os: [ubuntu-latest, macos-latest, windows-latest]
     steps:
       - uses: actions/checkout@v4
       - name: Setup PDM
@@ -29,11 +28,11 @@ jobs:
         run: pdm test
   Test20:
     name: Test SA 2.0
-    runs-on: ${{ matrix.os }}
+    runs-on: ubuntu-latest
     strategy:
       matrix:
         python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
-        os: [ubuntu-latest, macos-latest, windows-latest]
+
     steps:
       - uses: actions/checkout@v4
       - name: Setup PDM