diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index bf0cac9c..1459fecb 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -35,7 +35,7 @@ jobs:
       - name: Setup Python
         uses: actions/setup-python@v1
         with:
-          python-version: 3.x
+          python-version: 3.9
           architecture: x64
       - name: Fetch Wenet
         uses: actions/checkout@v1