diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index a7a0c36..37c7f22 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -14,7 +14,7 @@
     runs-on: ubuntu-latest
     steps:
       - name: Checkout master
-        uses: actions/checkout@50fbc622fc4ef5163becd7fab6573eac35f8462e # v1
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
 
       - name: Deploy docs
         uses: mhausenblas/mkdocs-deploy-gh-pages@master