diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 3325b67..f14dcb7 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
       ### MkDocs
       - name: Setup Python
         uses: actions/setup-python@v4