diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 77d2421..969c3d7 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -12,6 +12,8 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.ref_name }}
   cancel-in-progress: true
 
+permissions: {}
+
 jobs:
   test:
     runs-on: ${{ matrix.os }}
@@ -41,6 +43,8 @@ jobs:
     steps:
       - name: Check out repository
         uses: actions/checkout@v6
+        with:
+          persist-credentials: false
 
       - name: Set up Python
         uses: actions/setup-python@v6