diff --git a/.github/workflows/lint.yaml b/.github/workflows/lint.yaml
index 2536a0e..bb73d73 100644
--- a/.github/workflows/lint.yaml
+++ b/.github/workflows/lint.yaml
@@ -7,7 +7,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v2.3.4
       - name: Set up Python
         uses: actions/setup-python@v2
         with: