diff --git a/.github/workflows/mkdocs.yml b/.github/workflows/mkdocs.yml
index 6b9a87dd..c43dfe1c 100644
--- a/.github/workflows/mkdocs.yml
+++ b/.github/workflows/mkdocs.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout main
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Deploy docs
         uses: mhausenblas/mkdocs-deploy-gh-pages@master